Monday, May 7, 2012

Encephalitis

Encephalitis is defined as a condition of irritation and swelling (inflammation) of the brain, as a result of virus, bacteria and others invasion.

Symptoms
Symptoms of Encephalitis are not limit to
1. Headache
In the study to evaluate 43 participants identified with earlier intracranial infection, whereof three had more than one infection: bacterial meningitis (n=19), lymphocytic meningitis (n=18), encephalitis (n=9), and brain abscess (n=1).The mean interval from infection to participation in HUNT 3 was 11.2 (range 1.5-19.7) years. There was no significant increase in the prevalence of headache (OR 1.10, 95% CI 0.58-2.07), its subtypes (migraine, or tension-type headache), or chronic daily headache (OR 1.85, 95% CI 0.45-7.68) amongst participants with previous intracranial infection compared with the surrounding population.(1)

2. Fever
West Nile virus (WNV), a member of the family Flaviviridae (genus Flavivirus), is a mosquito-borne virus first isolated in 1937 in the West Nile district of Uganda. According to the study of National Institute of Infectious Diseases, WN encephalitis was first reported in the Western Hemisphere in the summer of 1999, there was an outbreak in New York City. Epidemic WNV strains in North America are severely pathogenic, however, attenuated WNV strains were found in Texas and Mexico in 2003. The principal vectors of WNV transmission in North America are Culex. pipiens, Cx. Quinquefasciatus, Cx. restuans, Cx salinarius and Cx talsalis. The number of WN fever case has exceeded 27,000 since 1999 in the United States and 4,600 since 2002 in Canada. The first imported case of West Nile fever in Japan was confirmed in September, 2005(2).

3. Confusion
There is report that a seventy-five-year-old patient was hospitalized because of relapsing feverish confusion episodes with meningitis. During the year before his admission he had experienced four spontaneously regressive episodes of feverish confusion. Exploration of these episodes disclosed a paraneoplastic limbic encephalitis due to an underlying Hodgkin's disease.(3)

4. Drowsiness
In the information collected on 5 previously healthy patients (2 boys and 3 girls, aged 10-15 years) with 2009 H1N1 influenza who presented with late onset (>3 days after fever) and long-standing (>48 hours) delirious behavior. Each exhibited mild to moderate drowsiness between the episodes of delirious behavior, in the report of Kameda Medical Center(4)

5. Fatigue
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is about 2 to 4 times more common in women than in men. It is associated with extreme and prolonged fatigue that isn't relieved by rest(5)

6. Others symptoms
In the study to investigate Lyme borreliosis, a multisystem disorder caused by Borrelia burgdorferi (Bb) and its effects conducted by Zagreb University Hospital Centre, Dr Markeljević J, and the team of scientist showed that neurological symptoms such as lymphocytic meningoradiculoneuritis (Bannwart's syndrome), cranial neuritis (II,III,IV,V,VI), encephalitis, transverse myelitis are found in about 10% of cases during the second phase of the disease. In the chronic stage, many months or years after the initial infection, other neurologic complications may occur, such as encephalomyelitis, epileptic crises, cognitive impairment, peripheral neuropathy and psychiatric disturbances such as depression, anxiety, panicc attacks, catatonia, psychosis etc. Some patient continue to experience symptoms of fatigue, insomnia or psychiatric disorder in the post borrelia syndrome. We describe here a patient with a triad of unusual symptoms in chronic LNB including tremor, seizures and psychosis. Standardized medical interview, neurologic examination, neuroimaging, serum and CSF serology as well as EEG and EMNG evaluation were performed(6).


7. Etc.

II. Causes and Risk Factors
A. Causes
1. Encephalitis caused by virus
a. Rabies virus 
Rabies virus is the etiological agent of an acute encephalitis, which in absence of post exposure treatment is fatal in almost all cases. In the study to analyze the role of the immuno-inhibitory molecule B7-H1 in this virus strategy, show that the B7-H1/PD-1 pathway can be exploited locally and in an organ specific manner--here the nervous system--by a neurotropic virus to promote successful host invasion(7).

b. Herpes simplex 
Herpes simplex encephalitis (HSE) is a life-threatening consequence of herpes simplex virus (HSV) infection of the central nervous system (CNS). Although HSE is rare, mortality rates reach 70% in the absence of therapy and only a minority of individuals return to normal function, according to Scientist at the University of Colorado Health Sciences Center and Denver Veterans Affairs Medical Center(8).

c. Poliovirus
Poliovirus virion RNA contains a single covalently bound sequence of polyadenylic acid which is approximately 49 nucleotides long. A single, slightly longer polyadenylic acid sequence is contained in Eastern Equine Encephalitis virus RNA(9).

d. Measles virus
There are report from The Hospital for Sick Children that a case of measles inclusion-body encephalitis (MIBE) occurring in an apparently healthy 21-month-old boy 8.5 months after measles-mumps-rubella vaccination. He had no prior evidence of immune deficiency and no history of measles exposure or clinical disease, as a brain biopsy revealed histopathologic features consistent with MIBE, and measles antigens were detected by immunohistochemical staining. Electron microscop(11).

e. JC virus
Scientist at the Karolinska Institute, Huddinge University Hospital showed that JC virus (JCV) DNA was detected in cerebrospinal fluid (CSF) samples from patients with progressive multifocal leukoencephalopathy (PML) but not in CSF samples from patients with herpes simplex encephalitis, enteroviral meningitis, or multiple sclerosis. This suggests that inflammatory processes in the brain do not necessarily reactivate JCV, which further supports the proposal that the presence of JCV DNA in the CSF is diagnostic for PML(12)

f.  Japanese encephalitis virus
Japanese encephalitis virus (JEV) has found to be a pathogen causing febrile syndrome, encephalitis, and death. Envelop (E) glycoprotein is the major target of inducing neutralizing antibodies and protective immunity in host(13)

g.  West Nile encephalitis virus
WNV disseminates to the central nervous system (CNS) and causes severe disease primarily in the immunocompromised and elderly. Experimental studies have made significant progress in dissecting the viral and host factors that determine the pathogenesis and outcome of WNV infection.(14).

h.  Eastern equine encephalitis virus (EEE virus)
The eastern equine encephalitis (EEE) complex consists of four distinct genetic lineages: one that circulates in North America (NA EEEV) and the Caribbean and three that circulate in Central and South America (SA EEEV). Differences in their geographic, pathogenic, and epidemiologic profiles prompted evaluation of their genetic diversity and evolutionary histories, according to University of Texas Medical Branch(15).

i. Etc.

2. Encephalitis caused by bacteria infection
a. Bacterial meningitis, such as herpes simplex virus
Health records from 2002 to 2006 of all children 6 months to 6 years with a discharge diagnosis from the Hospital for Sick Children (Toronto, ON) of febrile convulsion, meningitis, or encephalitis were reviewed. Rates of bacterial meningitis and HSV encephalitis in children presenting with complex febrile seizures were calculated(16). In the article of "Meningitis and Encephalitis: Introduction", the author(s) wrote "Inflammation of the meninges (meningitis) and inflammation of the brain (encephalitis) often are seen simultaneously (meningoencephalitis) in the same animal, although either can be seen separately. In animals with meningoencephalitis, the clinical signs of meningitis often precede the clinical signs of encephalitis and may remain the predominant feature of the illness"(17)

b.Syphilis
According to a report by centre hospitalier universitaire  17-year-old patient presented for one year progressive dementia, frontal syndrome and extra pyramidal syndrome. The cerebral CT scan showed a diffuse cortical and subcortical atrophy. Blood and CSF positive antibodies confirmed the diagnosis of late congenital meningoencephalitis due to syphilis(18)
 
3. Parasites and Others
a. Toxoplasmosis
Toxoplasmosis is a rare but rapidly fatal complication that can occur following hematopoietic stem cell transplantation (HSCT), according to Kyushu University Graduate School of Medical Sciences, in a study of over a 17-yr period at our institutions, two patients received a conventional conditioning regimen followed by transplantation from an HLA-matched donor; however, they developed severe graft-vs.-host disease, which required intensive immunosuppressive therapy. Despite prophylactic treatment with trimethoprim/sulfamethoxazole, their immunosuppressive state, as indicated by a low CD4(+) cell count, might have resulted in toxoplasmosis encephalitis.(19)
 
b. Malaria  
Malaria is a mosquito-borne infectious disease and associated Encephalitis to. In the article of "Mosquitoes and Diseas" posted in Illinois department of Public Health wrote "Today, however, the threat of developing encephalitis from mosquitoes is far greater than the threat of malaria in the United States. Encephalitis, meningitis and other diseases can develop from the bites of mosquitoes infected with certain viruses. These include the viruses of West Nile, St. Louis encephalitis, LaCrosse (California) encephalitis, and Eastern equine and Western equine encephalitis"(20)

c. Primary amoebic meningoencephalitis
Primary amoebic meningoencephalitis (PAM or PAME) is a disease of the central nervous system caused by infection from Naegleria fowleri. In the report of Dayanand Medical College and Hospital (DMC & H), a 36-year-old, Indian countryman who had a history of taking bath in the village pond. Computerized tomography (CT) scan of brain showed a soft tissue non-enhancing mass with erosion of sphenoid sinus. However CSF findings showed no fungal or bacterial pathogen. Trophozoites of Naegleria fowleri were detected in the direct microscopic examination of CSF and these were grown in culture on non-nutrient agar(21).

d. Lyme disease 
Lyme borreliosis is a multisystem disorder caused by Borrelia burgdorferi (Bb). Neurological symptoms such as lymphocytic meningoradiculoneuritis (Bannwart's syndrome), cranial neuritis (II,III,IV,V,VI), encephalitis, transverse myelitis are found in about 10% of cases during the second phase of the disease. In the chronic stage, many months or years after the initial infection(22).

e. Cryptococcus neoformans 
 reported from the Ohgaki Municipal Hospital., a 46-year-old man with hepatoma was admitted with chief complaints of headache, fever and dizziness. On admission, cerebellar signs (disturbance of finger-to-nose test and of heel-to-knee test, intention tremor, and truncal ataxia) were neurologically noted.  Head CT showed swelling and enhancement of the cerebellar cortex and dilatation of the cerebral ventriculi. Cryptococcus neoformans was detected in a culture of the patient's CSF.(23)

f. Streptococci 
Encephalitis lethargica or von Economo disease is an atypical form of encephalitis. Also known as "sleepy sickness" (though different from the sleeping sickness transmitted by the tsetse fly)(24)

g. Staphylococci 
In the study in 1997, 4,409 cases of meningitis and 632 cases of encephalitis were reported in Poland. Meningitis incidence rate was 11.4 per 100,000, and was 3-times lower than in 1996. The etiology of meningitis cases was as follows: 2,713 (61.5%) were due to viral agents (ECHO 30 dominated), 1,351 (30.7%) were caused by bacterial agents: 144 meningococcal (3.3%) and 1,207 other bacterial. The bacterial etiology was following: 33.2% were due to Streptococcus pneumoniae, 27.6% were cased by Haemophilus influenzae type b, and 11.6% by Staphylococci.(25)

h. Autoimmune disease 
Autoimmune limbic encephalitis is a rare disorder, characterised by the subacute onset of seizures, short-term memory loss, and psychiatric and behavioural symptoms. Initially, it was recognised as a paraneoplastic disorder, but recently a subgroup of patients without systemic cancer was identified. This type of limbic encephalitis is associated with voltage-gated potassium channel (VGKC) or N-methyl-D-aspartate receptor (NMDAR) antibodies(26).

i. Etc.

B. Risk factors
a. Age(27)
Age and people with weakened immune system are susceptible to be infected by encephalitis and bacteria virus,  depending on the type of encephalitis virus.
a.1. Newborn and infants are particularly at risk for herpes virus and arboviruses,
a.2. Infants are most vulnerable to Western equine encephalitis. Older
a.3. Children and teenagers are vulnerable to Eastern equine and La Crosse encephalitis.
a.4. Older and elderly adults are at higher risk for Eastern equine, St. Louis, and West Nile encephalitis.

b. Weakened immune system.
People with HIV/AIDS, taking immune-suppressing drugs compromised or weakened immune system are at higher risk of encephalitis.

c. Geographic regions
People who live in the geographic region with Mosquito-borne or tick-borne viruses are at higher risk of encephalitis.

d. Outdoor activities.
People who are engage a lots of outdoor activities or work that expose to ticks or mosquitoes are at increased risk of encephalitis. 

e. Seasonal risk
Mosquitoes and ticks season

f. Etc.


III. Complications
1. Brain damage
Encephalitis can cause brain damage as a result of replication of viruses after entering brain of that depleting the energy and oxygen in the brain cell. In case of autoimmune encephalitis the immune system makes antibodies that cause damage to neurons or other brain cells as a result of the accumulateion of fluid, white blood cells, the contents of dead nerve cells and disabled viruses(28). Some resaerchers suggested that Glutamate is the major excitatory CNS neurotransmitter. Glutamate receptor autoantibodies have now been called to our attention, as they are found in many patients with epilepsy, systemic lupus erythematosus (SLE) and encephalitis, and can unquestionably cause brain damage(29).
Other found that The blood-brain barrier (BBB) serves to protect the central nervous system (CNS) from damage by exogenous molecules. Japanese encephalitis (JE), caused by a neurotropic flavivirus, leads to inflammation in the CNS, neuronal death and also compromises the structural and functional integrity of the BBB(30).

2. Stroke 
Stroke are associated with the complication of Encephalitis. In the study to investigate Herpes simplex virus type-1 encephalitis and occipital ischemic stroke, the team at Erasmus MC Sophia Children's Hospital said "Childhood ischemic stroke is a rare complication of herpes simplex virus type-1 encephalitis" in a description of healthy 3-year-old girl who presented with bilateral occipital ischemic stroke, attributable to herpes simplex virus type-1 encephalitis, highlighting the importance of viral diagnostics in cerebrospinal fluid"(31).

3. Seizures    
Scientists at the National Center of Neurology and Psychiatry have found that Acute encephalitis with refractory, repetitive partial seizures (AERRPS) represents a peculiar form of encephalitis mainly affecting children. They usually present abruptly with seizure or impaired consciousness as well as high-grade fever following antecedent infection(32)

4. Death 
Compared to other infectious diseases, encephalitis has a high mortality rate. Overall, approximately 10% of those with encephalitis die from the brain inflammation or complications such as secondary infection. Some forms of encephalitis have more severe courses, including herpes simplex virus encephalitis, in which mortality is up to 30% with treatment, and 70-80% without(33).

5. Etc.

IV. Diagnosis
A. Misdiagnosis
It is important to differentiate encephalitis correctly from other disorders that may cause similar neurological symptoms and which may have very different treatments, including include bacterial meningitis, stroke, brain tumours, drug reactions and metabolic disturbances. In a report on Encephalitis Global community study (a sad story) Mcgraw wrote " He (My son) went to an emergency room 4 times in 3 days. He had high white blood cell counts, was complaining of chest pain, arm numbness and a general feeling of feeling very very ill. His first diagnosis was Rhabdamyolisis and (you guessed it) sinisitus. They gave him saline drip for a few hours then sent him home with pain pills and doxycycline. Second time his diagnosis was just sinusitis, sent home with more pain pills. Third time, (another common diagnosis) the flu! He went back 2 times on the third day, and was refused a bed. I believe the phase was "you are not dying so you don't get a bed". Noticable on his admittance papers: his signature by the third admittance looked like he could no longer remember how to spell his name. He WAS given a CT scan each time, but for his chest. Blood work was also done, which did not match his diagnoses"
  and "Two days later he can not walk, hold any thing, is in horrible pain and very disoriented, seizing, hallucinating. He goes to a different ER. They decide that since my son drank beer daily that he was now in alcohol withdrawal. He is also in full blown kidney failure. They call three hospitals before they find one who can deal with his "withdrawal". He is admitted to the third hospital. Kidney failure dealt with and he is sedated"  Finally "Within 12 hours he has no gag reflex, no cough reflex, eyes not tracking or focusing. On life support. No reaction to pain. GCS is 12-14 for 3 days. No LP or MRI preformed yet. Yet they have decided to give him antibiotics and have diagnosed pneumonia. Admitted Sat, MRI finally done Tues. At this time it was discovered that he had massive swelling in his brain stem. He never came out of the coma and died after being on life support for 8 days. disturbances."(34)

B. Diagnosis
After taking the physical exam and medical history, depending to the symptoms of the patient and to rule out the similar symptoms with different diseases. In the report by the Royal Melbourne Hospital, Dr. Knox J, and the researchers indicated that a suspected but unproven case of Murray Valley encephalitis virus (MVEV) infection to illustrate some of the challenges in clinical management. It remains difficult to establish an early diagnosis of MVEV infection, and there is a lack of proven therapeutic options(35).
1. Brain Scans
Computerized Tomography (CT) or Magnetic Resonance Imaging (MRI)
The aim of the test is to look for the extent inflammation of brain and rule out other similar symptoms of different diseases, including stroke, brain tumours, aneurysms, etc.

2. Electroencephalogram (EEG)
Electroencephalogram (EEG) is a measure of brain waves of that allow your doctor to see how your brain functions over a certain time. Any abnormal patten may provide evidence of in encephalitis, such as slowing of brain activity....

3. Lumbar puncture (LP)
Lumbar puncture (LP) or spinal tap is a diagnostic and at times therapeutic procedure allows a doctor to test the sample the cerebrospinal fluid (CSF) surrounded the brain and spinal cord and exam  under the microscope to assess the number and type of white blood cells in differentiation between viral or bacterial infections.

4. Serological tests
blood, urine, as well as other body fluids can also help to detect brain and/or spinal cord infection. Serological tests is the study of antibodies presented in the cerebrospinal fluid against a specific viral agent or by polymerase chain reaction that amplifies the RNA or DNA of the virus responsible.

5. Etc.

Preventions
A. Do's and Do not's list
1.  Behavioral
Delirious behavior associated with influenza usually has an onset within a few days after fever and lasts <24 hours. Dr. Takanashi J, and the research team showed that 2009 H1N1 influenza has a tendency to cause late-onset and long-standing delirious behavior, at least in Japanese children. Mild autoimmune-mediated encephalitis should be considered as an underlying cause.(36)

2. Eat your vegetable and fruits
Vegetable and fruit contain high amount of antioxidant, not only enhances the immune system but also fight against foreign virus and bacteria infection and inflammatory causes of meningitis(37)

3. Avoid excessive drinking
Excessive drinking can increase the risk of liver diseases that can lead to weaken immune function causes of meningitis


4. Moderate exercise
Moderate exercise can enhance the circulatory system and increase the function of immune system in fighting against bacterial and viral invasion.


5. Smoking
The odds ratio of purulent meningitis for children receiving passive smoking was 3.0, and the 95% confident limit was greater than 1 (P < 0.05). There was significant dose-effect relationship between the daily dosage of cigarette smoked by family members and the odds ratio of purulent meningitis (P < 0.005)(38)

6. Etc.

B. Diet against Encephalitis
A. Diet enhances the immune system and neuroprotectors should be helpful in preventing the occurrence of Encephalitis
A.1. Kidney beans
1. Antiradical and antioxidant activity
In the analyzing the effects of solid state fermentation (SSF) on physicochemical, nutritional and antioxidant properties of common bean flour found that tempeh flour had 2.2-fold more phenolics than the bean flour and exhibited antiradical activity (43%) and antioxidant activity (38%) correlated with total phenolics content. Common bean tempeh flour may be considered for the fortification of widely consumed legume-based food products and also for the prevention of pathologies associated with oxidative stress, according to "Physicochemical, nutritional and antioxidant properties of tempeh flour from common bean ( Phaseolus vulgaris L.)" by Reyes-Bastidas M, Reyes-Fernández EZ, López-Cervantes J, Milán-Carrillo J, Loarca-Piña GF, Reyes-Moreno C.(39)

2. Antioxidant and anti-inflammatory activities
In the study of Hulls obtained by mechanical abrasive dehulling from four bean and their antioxidant and anti-inflammatory activities, found that bean hull water extracts were stronger inhibitors of lipoxygenase, 15-LOX, than corresponding acetone extracts. Anti-inflammatory activity of bean hulls was dependent on their phenolic content and antioxidant activity that were significantly affected by cultivar and extracting solvent, according to "Antioxidant and anti-inflammatory activities of bean ( Phaseolus vulgaris L.) hulls" by Oomah BD, Corbé A, Balasubramanian P.(40)

3.  Immune system
Kidney bean contains eight basic form of amino acid which not only helps to the nervous system in relay information between themselves and cells in other parts of the body (according to the article of "Amino Acids: How They Affect the Brain and Nervous System" posted in http://www.greendivamom.com/) it also improves the immune system to generate B lymphocytes by rapid dividing and replicating for the body's antibody defense mechanism. In stuyd of "Branched-chain amino acid supplementation does not enhance athletic performance but affects muscle recovery and the immune system" by Negro M, Giardina S, Marzani B, Marzatico F., (41), researchers found that The BCAA (branched-chain amino acids) also modifies the pattern of exercise-related cytokine production, leading to a diversion of the lymphocyte immune response towards a Th1 type. According to these findings, it is possible to consider the BCAA as a useful supplement for muscle recovery and immune regulation for sports events.

A.2. Whole wheat
In the classification of Anthocyanins of whole purple wheat, unpolished red rice, and partially polished red rice before and after processing to produce infant cereals and it antioxidant efect found that purple wheat infant cereals had higher cellular antioxidant activity than unpolished red rice ones (p < 0.05). Whole purple wheat infant cereals showed higher antioxidant activity than the commercial infant cereal, suggesting a possibility of improving infant antioxidant status by incorporating this grain in their diet, according to "Comparative Evaluation of the Antioxidant Potential of Infant Cereals Produced from Purple Wheat and Red Rice Grains and LC-MS Analysis of Their Anthocyanins" by Hirawan R, Diehl-Jones W, Beta T.(42)


A.3. Eggplant
1. Antioxidant compounds
In the assessment of Thermal treatment of eggplant (Solanum melongena L.) and its effect on human neutrophil burst found that successive extract dilutions showed a significant activity up to 1.25 microg/mL after cooking, while raw fruits resulted in an activity up to 10.00 microg/mL. These results showed that the thermal treatment commonly used before consumption can increase the content and biological activity of antioxidant compounds of eggplants, according to "Thermal treatment of eggplant (Solanum melongena L.) increases the antioxidant content and the inhibitory effect on human neutrophil burst" by Lo Scalzo R, Fibiani M, Mennella G, Rotino GL, Dal Sasso M, Culici M, Spallino A, Braga PC.(43)

2.
Brain homogenates
In the classification ofAntioxidant activity of nasunin, an anthocyanin in eggplant peels and theirs effect on lipid peroxidation found that Nasunin protection against H(2)O(2)-induced lipid peroxidation in rat brain homogenate was measured at 586 nm using the indicator of malonaldehyde and 4-hydroxyalkenals. Nasunin (<50 microM) protected against lipid peroxidation of brain homogenates. The findings suggest that nasunin is a potent O(2)(-) scavenger and has protective activity against lipid peroxidation, according to "Antioxidant activity of nasunin, an anthocyanin in eggplant peels" by Noda Y, Kneyuki T, Igarashi K, Mori A, Packer L.(44)

A.4. White button mushrooms (WBM
1. Immunologic effects
In the analyzing White button mushrooms (WBM) and its effect in immune response, found that WBM promote DC maturation and enhance their antigen-presenting function. This effect may have potential in enhancing both innate and T cell-mediated immunity leading to a more efficient surveillance and defense mechanism against microbial invasion and tumor development, according to "White button mushroom enhances maturation of bone marrow-derived dendritic cells and their antigen presenting function in mice" by Ren Z, Guo Z, Meydani SN, Wu D.(45)

2. Neurotrophic action
Found that
the neurotrophic action of cobalamin (Cbl) in the central nervous system (CNS) of totally gastrectomized (TGX) rats is mediated by stimulation of the epidermal growth factor(EGF) synthesis in the CNS itself. It thus appears that Cbl inversely regulates the expression of EGF and TNF-alpha genes in the CNS of TGX rats, according to "Epidermal growth factor as a local mediator of the neurotrophic action of vitamin B(12) (cobalamin) in the rat central nervous system" by Scalabrino G, Nicolini G, Buccellato FR, Peracchi M, Tredici G, Manfridi A, Pravettoni G.(46)

3. Immune system
Since it contain high amount of vitamin C, it not only helps to improve the immune system in fighting against the foreign invasion, such as virus and bacteria, but also helps to inhibits fatty acid synthase expression as a result of the presence linoleic acid, thus reducing the risk of tumors and breast, colon and prostate cancers, according to the study of "The 10t,12c isomer of conjugated linoleic acid inhibits fatty acid synthase expression and enzyme activity in human breast, colon, and prostate cancer cells" by Lau DS, Archer MC.(47)

A.5. Garlic
1. Antioxidant effects
In the study of the Extracts of aged fresh garlic that are aged over a prolonged period and its antioxidant effects found that the ability of AGE to protect against oxidant-induced disease, acute damage from aging, radiation and chemical exposure, and long-term toxic damage. Although additional observations are warranted in humans, compelling evidence supports the beneficial health effects attributed to AGE, i.e., reducing the risk of cardiovascular disease, stroke, cancer and aging, including the oxidant-mediated brain cell damage that is implicated in Alzheimer's disease, according to "Antioxidant health effects of aged garlic extract" by Borek C.(48)

2. Common cold
In the searched from January 1966 to September 2009 combining the key words common cold or influenza with echinacea, garlic, ginseng, probiotics, vitamin C, and zinc. Clinical trials and prospective studies found that for prevention, vitamin C demonstrated benefit in a large meta-analysis, with possibly increased benefit in patients subjected to cold stress. There is inconsistent evidence for Asian ginseng (Panax ginseng) and North American ginseng (Panax quinquefolius). Allicin was highly effective in 1 small trial. For treatment, Echinacea purpurea is the most consistently useful variety; it was effective in 5 of 6 trials. Zinc lozenges were effective in 5 of 9 trials, likely owing to dose and formulation issues. Overall, the evidence suggests no benefit from probiotics for prevention or treatment of the common cold, according to "Complementary and alternative medicine for prevention and treatment of the common cold" by Nahas R, Balla A.(49)

3. Tuberculosis
In the investigation of the garlic extracts and the increasing incidence of Mycobacterium tuberculosis (MTB) and particularly of multi-drug resistant tuberculosis (MDR-TB) found that Allium sativum offers a hope for developing alternative drugs. The involvement of traditional healers (TH) in the TB health management could facilitate the administration of garlic extracts to the infected patients, according to "The potential role of garlic (Allium sativum) against the multi-drug resistant tuberculosis pandemic: a review" by Dini C, Fabbri A, Geraci A.(50)

A.6. Tomato
1. Antioxidative and Cancer Cell-Inhibiting Activities
In the research of Tomato ( Solanum lycopersicum ) plants synthesize nutrients, pigments, and bioactive compounds and their benefit in nutrition and human health found that Tomato extracts promoted growth in normal liver (Chang) cells, had little effect in normal lung (Hel299) cells, mildly inhibited growth of lung cancer (A549) cells, and first promoted and then, at higher concentrations, inhibited growth in lymphoma (U937) cells. The relationship of cell growth to measured constituents was not apparent, according to "Free Amino Acid and Phenolic Contents and Antioxidative and Cancer Cell-Inhibiting Activities of Extracts of 11 Greenhouse-Grown Tomato Varieties and 13 Tomato-Based Foods" by Choi SH, Kim HR, Kim HJ, Lee IS, Kozukue N, Levin CE, Friedman M.(51)

2. Lycopene
Lycopene, one of the powerful antioxidant in tomatoes, not only helps the immune system in neutralizing the forming of free radicals in the body and according to Harvard investigation as it found that men who ate more than 10 servings tomato-based foods daily (like cooked tomatoes and tomato sauce,) had a 35 percent lower risk of developing prostate cancer than those who ate the least amount of these foods. The benefits of lycopene was more pronounced with advanced stages of prostate cancer. Also according to the study of "Chemoprevention of prostate cancer with lycopene in the TRAMP model" by Konijeti R, Henning S, Moro A, Sheikh A, Elashoff D, Shapiro A, Ku M, Said JW, Heber D, Cohen P, Aronson WJ.(52)

2. Antiaging
Tomato beside prevents the progressive loss of structure, function or death of neurons, including Parkinson’s, Alzheimer’s, and Huntington’s diseases, According to the study of "Role of oxidative stress and antioxidants in neurodegenerative diseases" by Rao AV, Balachandran B(53), it also contains vitamin C that helps to releases of histamine (local immune responses), thus increasing the detoxification of histamine, according to the study of "Effect of ascorbic acid on histamine metabolism in scorbutic guinea-pigs" by I B Chatterjee, S D Gupta, A K Majumder, B K Nandi, and N Subramanian, posted in (54) researchers indicated that The increased histamine content of the urine, blood and other tissues in the ascorbic-acid-depleted condition could be brought back to normal levels by administration of a single dose of ascorbic acid 5 mg/100 g body wt.

3. Detoxification
Liver is a second defense that helps to clean out the toxins accumulation in the blood body. If the liver is over work, it can cause liver congestion, leading to lower of bile production or weaken carbohydrate metabolism. Since tomato contains high amount of Vitamins A and C, it not only supports liver function but stimulates the liver's function in detoxification of toxins., according to the study of "Effects of dried fish on antioxidant levels in rat liver" by Anilakumar KR, Khanum F, Krishna KR, Viswanathan KR.(55)

A.7. Blueberry
In the investigation of Blueberry and blackberry wines commercially available in Illinois and theirs potential health benefits, found that fruit wines made from blueberries and blackberries may have potential health applications and therefore could contribute to the economy of the wine industry. Practical Application: The majority of wines are produced from grapes, but wine can also be produced from other fruits including blueberries and blackberries, which contain phenolic compounds that may contribute to human health, according to "Comparison of Chemical Composition and Antioxidant Capacity of Commercially Available Blueberry and Blackberry Wines in Illinois" by Johnson MH, Gonzalez de Mejia E.(56)

A.8. Raspberries
1. Neurodegenerative diseases
In the identification of Resveratrol found skin of grapes, raspberries, mulberries, pistachios and peanuts and theirs effect neurodegenerative diseases, found that resveratrol shows effects in in vitro models of epilepsy, Alzheimer's disease, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, and nerve injury. However, evidences in vivo as well as in human beings are still lacking. Thus, further investigations on the pharmacological effects of resveratrol in vivo are necessary before any conclusions on its effects on neurodegenerative diseases can be obtained, according to "Resveratrol: a natural compound with pharmacological potential in neurodegenerative diseases" by Rocha-González HI, Ambriz-Tututi M, Granados-Soto V.(57)

2. Degenerative diseases of ageing
Long-term vitamin K inadequacy may reduce the function of supporting the carboxylation of at least some of these Gla-protein that can lead the development of degenerative diseases of ageing including osteoporosis and atherosclerosis, according to the study of "Vitamin K, osteoporosis and degenerative diseases of ageing" by Cees Vermeer and Elke Theuwissen(58)

3.  Antioxidant
Vitamin C or ascorbic acid is a powerful antioxidant which inhibits the forming of the free radical due to oxidative stress. It also enhances the function of immune system in guarding our body against foreign invasion, thus reducing the risk of inflammatory and infectious diseases, according to the study of "Role of ascorbic acid in scavenging free radicals and lead toxicity from biosystems" by Tariq SA.(59)
 
A.9 Flax seed
Flax seed contains a high amount of antioxidant that helps to guard the body from forming of free radicals by promoting the proper DNA replication and cells division, according to "Free radicals, metals and antioxidants in oxidative stress-induced cancer" by Valko M, Rhodes CJ, Moncol J, Izakovic M, Mazur M.(60) 
 
A.10. Salmon
1. Antioxidants
In the research of the antioxidant effect of vitamin E after ingestion of salmon found that that megadoses of vitamin E, far from having pro-oxidative activity, actually increase the anti-oxidative capacity of the liver, especially after ingestion of salmon oil, according to "Effects of megadoses of dietary vitamin E on the antioxidant status of rats fed lard or salmon oil" by Flader D, Brandsch C, Hirche F, Eder K.(61)
 
2. Selenium
Salmon contains trace minerals selenium which is essential for the healthy function of the thyroid and immune system as it increases the antioxidant defense system by fighting against the forming of free radicals and reduce the risk of irregular cells growth causes of tumor and cancer, according to the study of "Selenium in the immune system" by Arthur JR, McKenzie RC, Beckett GJ., posted in PubMed (62)
 
3. Anti inflammationIt is said the Omega 3 fatty acids beside reduced the risk of inflammatory effects on our joints and improved blood flow, by regulating the migration of inflammatory cells that cause inflammation, but also autoimmune diseases as a result of the elevation of IL-1 and the proinflammatory leukotriene LTB(4) produced by omega-6 fatty acids, according to the study of "Omega-3 fatty acids in inflammation and autoimmune diseases" by Simopoulos AP., (63) 
 
A.11. Etc.
 

C. Nutritional supplements against Encephalitis(64)
Nutritional supplements enhances the immune system and neuroprotectors should be helpful in preventing the occurrence of Encephalitis
1. Bilirubin
Bilirubin is a prosthetic group which helps to break down molecules into smaller units in releasing energy, excreted in bile and urine. It is a cellular antioxidant, by reverting to biliverdin, a green tetrapyrrolic bile pigment, once again when oxidized that inhibits the effects of mutagens.

2. Carotenoids
Carotenoids are organic pigments, occurring in the chloroplasts and chromoplasts of plants and some other photosynthetic organisms like algae, some bacteria.
a. Beta-carotene
Beta-Carotene, an organic compound and classified as a terpenoid, a strongly-coloured red-orange pigment in plants and fruits.
a.1. It is not toxic and stored in liver for the production of vitamin A that inhibits cancer cell in experiment. Beta-carotene also neutralize singlet oxygen before giving rise of free radicals which can damage of DNA, leading to improper cell DNA replication, causing cancers.
a.2. Cell communication
Researcher found that beta-carotene enhances the communication between cell can reduce the risk of cancer by making cells division more reliable.
a.3. Immune system
Beta-carotene promotes the immune system in identifying the foreign invasion such as virus and bacteria by increasing the quality of MHC2 protein in maintaining optimal function of white cells.
a.4. Polyunsaturated fat
Researchers found that beta-carotene also inhibits the oxidation of polyunsaturated fat and lipoprotein in the blood that reduce the risk of plaques build up onto the arterial walls, causing heart diseases and stroke.
a.5. There are more benefits of beta-carotene.

b. Alpha-carotene
Alpha-carotene, one of the most abundant carotenoids in the North American diet, is a form of carotene with a β-ring at one end and an ε-ring at the other. It is the second most common form of carotene which not only protects cells from the damaging effects of free radicals and enhances the immune system in fighting against bacteria and virus invasion, but also stimulates the communication between cells thus preventing irregular cell growth cause of cancers.

c. Beta-cryptoxanthin
Beta cryptoxanthin is an antioxidant, beside helping to prevent free radical damage to cells and DNA but also stimulates the repair of oxidative damage to DNA. it enhances the immune function infighting against inflammatory cause of polyarthritis, and irregular cell growth cause of cancer due to oxidation.

d. Lutein
Lutein is one of the most popular North American carotenoids. It is found in greens like kale and spinach as well as the yolk of eggs. Lutein is also found in the human eye. Getting enough lutein in your diet may help to fight off age related macular degeneration, an eye condition.
Researcher has shown that people who do not have enough lutein in their diet will not have enough lutein present in the muscular part of the eye. This is what likely leads to age related macular degeneration that can result in blindness.

e. Zeaxanthin
Zeaxanthin, a most common carotenoid alcohols found in nature, is one of the two primary xanthophyll carotenoids contained within the retina of the eye. Intake of foods providing zeaxanthin with lower incidence of age-related macular degeneration as a result of its function of reducing the risk oxidative stress.

f. Lycopene
Lycopene is a red carotene of the carotenoid group that can be found in tomatoes, watermelons, and grapefruits. This powerful antioxidant is believed to be a powerful fighter of prostate cancer. Lycopene has many anti-aging capabilities as well as one of the most powerful antioxidants in the carotenoid group.

3. Flavonoids
Flavonoids also known as Vitamin P and citrin are a yellow pigments having a structure similar to that of flavones occurred in varies plants. it has been in human history for over thousands of years and discovered by A. S. Szent-Gyorgi in 1930. As he used vitamin C and flavonoids to heal the breakage of capillaries, which caused swelling and obstruction of blood flow. Most plants have more than one group or type act as predominate.
Flavonoids process a property as antioxidants. it helps to neutralize many of reactive oxygen species (ROS), including singlet oxygen, hydroxyl and superoxide radicals.
Although nitric oxide is considered a free radical produced by immune system to destroy bacteria and cancerous cells, but when it is over produced, it causes the production peroxynitrite which may attack protein, lipid and DNA, Flavonoids inhibit NO production of peroxynitrite due to reduction of enzyme expression.
a. Quercetin
Quercetin is a plant-derived flavonoid found in fruits, vegetables, leaves and grains and studies show that quercetin may have anti-inflammatory and antioxidant properties as a antioxidant, quercetin scavenges free radicals, which damage cell membranes, cause mutation of cells with tampering DNA.

b. Rutin
Rutin is a citrus flavonoid glycoside found in buckwheat and glycoside of the flavonoid quercetin. It inhibits platelet aggregation, decreases the capillary permeability, makes blood thinner and improves circulation. As an antioxidant, it can reduce the cytotoxicity of oxidized LDL cholesterol caused by free radical that lowers the risk of heart diseases.

c. Catechin
Catechin is a natural phenol antioxidant plant and natural anti-bacterial substance. Study showed catechin as good free radical scavenging power inhibits ROS production, thus it can be useful to the development of alimentary strategies to prevent OTA-induced cytotoxicity in human.

d. Etc.

4. Uric acids
Uric acids may have a potential therapeutic role as an antioxidant becuase of its function of inducing oxidative stress, either through creating reactive oxygen species or inhibiting antioxidant systems.
High uric acid can cause arthritis, cardiovascular disease, diabetes, Metabolic syndrome, kidney stones, etc.

5. Thiols (R-SH)
Chemically, thiol, a organosulfur compound has strong odours resembling that of garlic. They are used as odourants to assist in the detection of natural gas. It presents in the amino acid cysseine which helps to the functioning of enzyme regulation, cell signaling, protein trafficking and control of gene expression. As a sulfide residue, thiol plays an important role in cell function of reversal oxidation by interacting with GSSG resulting in formation of intramucolar protein disulfide and GSG.

6. Coenzyme Q10
Coenzyme Q10 is discovered by Dr. Karl Folfers in 1957, beside promotes the chemical reaction, often by speeding it up or allowing it to proceed under less stringent conditions, it also enhances energy production by promoting the process of the production of ATP then serving as fuel for the cells and acts an antioxidant to prevent the generation of free radicals during this process.

7. Vitamin A, C, E. D.
a. Vitamin A
Vitamin A occurs in the form retinol and is best known for its function in maintaining the health of cell membrane, hair, skin, bone, teeth and eyes. It also plays an important role as an antioxidant as it scavenges free radicals in the lining of the mouth and lungs; prevents its depletion in fighting the increased free radicals activity by radiation; boosts immune system in controlling of free radicals; prevents oxidation of LDL and enhances the productions of insulin pancreas.

b. Vitamin C
Vitamin C beside plays an important role in formation and maintenance of body tissues, it as an antioxidant and water soluble vitamin, vitamin C can be easily carry in blood, operate in much of the part of body. By restoring vitamin E, it helps to fight against forming of free radicals. By enhancing the immune system, it promotes against the microbial and viral and irregular cell growth causes of infection and inflammation.
Vitamin C also is a scavenger in inhibiting pollution cause of oxidation.

c. Vitamin E
Vitamin E is used to refer to a group of fat-soluble compounds that include both tocopherols and tocotrienols discovered by researchers Herbert Evans and Katherine Bishop. It beside is important in protecting muscle weakness, repair damage tissues, lower blood pressure and inducing blood clotting in healing wound, etc, it also is one of powerful antioxidant, by moving into the fatty medium to prevent lipid peroxidation, resulting in lessening the risk of chain reactions by curtailing them before they can starts.

d. Vitamin D
Reseacher found that vitamin D, a group of fat-soluble secosteroids is also a membrane antioxidant, with the ability to inhibit iron-dependent lipid peroxidation in liposomes compared to cholesterol.


D. Phytochemicals against Encephalitis
Phytochemicals enhances the immune system and promote cognitive effect should be helpful in preventing the occurrence of Encephalitis
D.1. Carnosol 
1. Anti-inflammatory effects
In the study of The increased adhesion of monocytes to injured endothelial layers and the effect of carnosol and rosemary essential oils found that the essential oil inhibit the adhesion of TNFalpha-induced monocytes to endothelial cells and suppress the expression of ICAM-1 at the transcriptional level, according to "Dual mechanisms of NF-kappaB inhibition in carnosol-treated endothelial cells" by Lian KC, Chuang JJ, Hsieh CW, Wung BS, Huang GD, Jian TY, Sun YW(65)

2. Antimicrobial activity
In the determination of EtOH/H2O extracts from the leaves and stems of Rosmarinus officinalis L and it antimicrobial effects found that antimicrobial activity of the extract from the leaves of R. officinalis may be ascribed mainly to the action of carnosic acid (2) and carnosol (3), according to "Antimicrobial activity of Rosmarinus officinalis against oral pathogens: relevance of carnosic acid and carnosol' by Bernardes WA, Lucarini R, Tozatti MG, Souza MG, Silva ML, Filho AA, Martins CH, Crotti AE, Pauletti PM, Groppo M, Cunha WR.(66)

D.2. Quercetin is a member of flavonoids, found in fruits, vegetables, leaves and grains. It is also one of antioxidants with property of protecting our body in fighting against forming of free radicals cause of mutation of cells`DNA.
1. Oxidative Stress
According to the study of `The protective effect of the flavonoids on food-mutagen-induced DNA damage in peripheral blood lymphocytes from colon cancer patients.`by Kurzawa-Zegota M, Najafzadeh M, Baumgartner A, Anderson D. (Source from Genetic and Reproductive Toxicology Group, Division of Biomedical Sciences, University of Bradford, Bradford BD7 1DP, UK.) posted in PubMed, researchers found that flavonoids (quercetin (Q) and rutin (R)) reduced oxidative stress caused by food mutagens in vitro in lymphocytes of healthy individuals and colon cancer patients. Thus, dietary supplementation with flavonoid-rich vegetables and fruits may prove very effective in protecting against oxidative stress.

2. Anti-cytogenotoxic effects
In a study of `Assessment of anti-cytogenotoxic effects of quercetin in animals treated with topotecan.`by Bakheet SA. (Source from Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, P.O. 2457, Riyadh 11451, Saudi Arabia.), posted in PubMed, researchers found that quercetin has a protective role in the abatement of topotecan-induced cyto- and genotoxicity in the bone marrow cells of mice that resides, at least in part, on its antioxidant effects. Based on the data presented, strategies can be developed to decrease the topotecan-induced bone marrow suppression and secondary malignancy in cancer patients and medical personnel exposing to topotecan.

3. Free radical scavenger
In a study of `Dietary chromones as antioxidant agents-the structural variable.`by Dias MM, Machado NF, Marques MP. (Source from Research Unit "Molecular Physical Chemistry", University of Coimbra, Portugal.), posted in PubMed, researchers found that from the eighteen tested compounds, three-fisetin, luteolin and quercetin-are shown to act as effective antiradicals. Consistent structure-activity relationships (SARs) were established regarding the antioxidant role of this type of chromone-based system. 

D.3. Tangeritin, one of the flavones, is found in tangerine and many citrus peels
1. Neuroprotective effects
In the evaluation of neuroprotective effects of a natural antioxidant tangeretin, a citrus flavonoid and its effect on Parkinson's disease found that tangeretin crosses the blood-brain barrier. The significant protection of striato-nigral integrity and functionality by tangeretin suggests its potential use as a neuroprotective agent, according to "Tissue distribution and neuroprotective effects of citrus flavonoid tangeretin in a rat model of Parkinson's disease" by Datla KP, Christidou M, Widmer WW, Rooprai HK, Dexter DT.(67) 

2. Antioxidants
In the comparison of hand-pressed juice of polymethoxylated flavones (PMFs) and flavanone glycosides (FGs) and the peeled fruit of 'Sainampueng' tangerines ( Citrus reticulata Blanco cv. Sainampueng) antioxidant effects found that hand-pressed juice of C. reticulata Blanco cv. Sainampueng serves as a rich source of PMFs, FGs, carotenoids, and antioxidants: 4-5 tangerine fruits ( approximately 80 g of each fruit) giving one glass of 200 mL hand-pressed juice would provide more than 5 mg of nobiletin and tangeretin and 36 mg of hesperidin, narirutin, and didymin, as well as 30 mg of ascorbic acid, >1 mg of provitamin A active beta-cryptoxanthin, and 200 microg of alpha-tocopherol, according to "Polymethoxylated flavones, flavanone glycosides, carotenoids, and antioxidants in different cultivation types of tangerines ( Citrus reticulata Blanco cv. Sainampueng) from Northern Thailand" by Stuetz W, Prapamontol T, Hongsibsong S, Biesalski HK.(68)

3. Antimicrobial activity
In the study of antibacterial and antifungal properties of wax and hexane extracts of Citrus spp. peels found that antimicrobial activity especially against M. canis and T. mentagrophytes: 4',5,6,7,8-pentamethoxyflavone (tangeritin) and 3',4',5,6,7,8-hexamethoxyflavone (nobiletin) from C. reticulata; and 6,7-dimethoxycoumarin (also known as escoparone, scoparone or scoparin) from C. limon, according to "Antimicrobial activity of wax and hexane extracts from Citrus spp. peels" by Johann S, Oliveira VL, Pizzolatti MG, Schripsema J, Braz-Filho R, Branco A, Smânia Jr A.(69)

D.4. Catechin is phytochemical of Flavan-3-ols, in the group of Flavonoids (polyphenols), found abundantly in white tea, green tea, black tea, grapes, wine, apple juice, cocoa, lentils, etc.
1. Antioxidant activity
In the research on polyphenolic compounds (included catechins) in the berries of edible honeysuckle and their biological effects, including recommended utilization, are reviewed found that These berries seem to be prospective sources of health-supporting phytochemicals that exhibit beneficial anti-adherence and chemo-protective activities, thus they may provide protection against a number of chronic conditions, e.g., cancer, diabetes mellitus, tumour growth or cardiovascular and neurodegenerative diseases, according to "Phenolic profile of edible honeysuckle berries (genus lonicera) and their biological effects" by Jurikova T, Rop O, Mlcek J, Sochor J, Balla S, Szekeres L, Hegedusova A, Hubalek J, Adam V, Kizek R.(70)

2. Anti-inflammatory effect
In the preparation of the gel of Chinese medicine catechu, and to observe the release mechanism in vitro and anti-inflammatory activity in rats, found that the optimum condition of extraction from catechu was as follows, the concentration of ethanol, ratio of raw material to solvent, ultrasonic time, and extraction temperature were 50% , 1: 12, 35 min and 60 degrees C, respectively. The formulation of catechu gel was carbomer-9 400.5 g, glycerol 5.0 g, the extracts of catechu 50.0 mL, and triethanomine 0.5 mL The gel was semitransparent and stable. The drugs released quickly. The catechu gel reduced the paw edema considerably in dose-dependent manner compared to carrageenan-induced rat, according to "[Preparation and pharmacodynamics studies on anti-inflammatory effect of catechu gel].[Article in Chinese]" by Zheng X, Zheng C.(71)

3. Neuropathic pain
In the investigation of Epigallocatechin-3-gallate (EGCG), the major catechin in green tea and its effect on intrathecal EGCG in neuropathic pain induced by spinal nerve ligation, found that This antinociceptive effect was reversed by intrathecal pretreatment with l-arginine, a precursor of NO. Intrathecal EGCG also blocked the increase in nNOS expression in the spinal cord of spinal nerve-ligated rats, but iNOS expression was not significantly suppressed. These findings suggest that intrathecal EGCG could produce an antiallodynic effect against spinal nerve ligation-induced neuropathic pain, mediated by blockade of nNOS protein expression and inhibition of the pronociceptive effects of NO, according to "Role of neuronal nitric oxide synthase in the antiallodynic effects of intrathecal EGCG in a neuropathic pain rat model" by Choi JI, Kim WM, Lee HG, Kim YO, Yoon MH.(72)

4. Anti-influenza virus activity
In the study of Polyphenolic compounds present in green tea, particularly catechins, and its effect on strong anti-influenza activity, found that therapeutic administration of green tea by-products via feed or water supplement resulted in a dose-dependent significant antiviral effect in chickens, with a dose of 10 g/kg of feed being the most effective (P < 0.001), according to "Anti-influenza virus activity of green tea by-products in vitro and efficacy against influenza virus infection in chickens" by Lee HJ, Lee YN, Youn HN, Lee DH, Kwak JH, Seong BL, Lee JB, Park SY, Choi IS, Song CS.(73)

D.5. Ellagic acid
1. Antiproliferative and Antioxidant
In a study of " In vitro antiproliferative, apoptotic and antioxidant activities of punicalagin, ellagic acid and a total pomegranate tannin extract are enhanced in combination with other polyphenols as found in pomegranate juice" by Navindra P. Seerama, Lynn S. Adamsa, Susanne M. Henninga, Yantao Niua, Yanjun Zhangbc, Muraleedharan G. Nairbc, David Hebera (Volume 16, Issue 6, Pages 360-367 (June 2005)), posted in The journal of Ntritional Biochemitry, researchers indicated that Antioxidant effects were evaluated using inhibition of lipid peroxidation and Trolox equivalent antioxidant capacity (TEAC) assays. Pomegranate juice showed greatest antiproliferative activity against all cell lines by inhibiting proliferation from 30% to 100%. At 100 μg/ml, PJ, EA, punicalagin and TPT induced apoptosis in HT-29 colon cells. However, in the HCT116 colon cells, EA, punicalagin and TPT but not PJ induced apoptosis. The trend in antioxidant activity was PJ>TPT>punicalagin>EA. The superior bioactivity of PJ compared to its purified polyphenols illustrated the multifactorial effects and chemical synergy of the action

2. Oxidative stress
According to the article of "BIOLOGICAL FUNCTIONALITY OF ELLAGIC ACID: A REVIEW" by D.A. VATTEM and K. SHETTY , Article first published online: 30 JUN 2005, posted in Wiley Online Library, researchers indicated that in abstract, in this article, we have revised the existing models and have proposed a comprehensive model for the antioxidant response-linked mechanism of the action of ellagic acid from fruits at the early stages of host cellular response by the modulation of enzyme response to maintain cellular homeostasis in eukaryotes and by inhibiting the survival in pathogenic prokaryotes.

3. Anti-inflammation
In a study of " Antinociceptive effect of Lafoensia pacari A. St.-Hil. independent of anti-inflammatory activity of ellagic acid. by Nascimento MV, Galdino PM, Florentino IF, Sampaio BL, Vanderlinde FA, de Paula JR, Costa EA. (Source from Instituto de Ciências Biológicas-2, Universidade Federal de Goiás, Goiânia, Brazil. nascimentofarma@yahoo.com.br) posted in PubMed. researchers found that Pre-treatment with naloxone did not reverse the antinociceptive effect. Only the ethyl acetate fraction showed antinociceptive and anti-inflammatory effects. Our results also showed that this extract contains compounds with analgesic action independent of anti-inflammatory activity.

D.6. Stilbenoids are type of chemical compound, belonging to the family of phenylpropanoids, including Resveratrol, Pterostilbene and Piceatannol found in grape skins and seeds, wine, nuts, peanuts, etc., According to the article of "Production of stilbenoids and phenolic acids by the peanut plant at early stages of growth." by Sobolev VS, Horn BW, Potter TL, Deyrup ST, Gloer JB. (Source from National Peanut Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, P.O. Box 509, Dawson, Georgia 39842, USA. vsobolev@nprl.usda.gov), posted in PubMed.
 1. Neuroprotective Activity
in a study of "Neuroprotective effect of resveratrol against methamphetamine-induced dopaminergic apoptotic cell death in a cell culture model of neurotoxicity" by Kanthasamy K, Gordon R, Jin H, Anantharam V, Ali S, Kanthasamy AG, Kanthasamy A. (Source from Dept. of Biomedical Sciences, Iowa Center for Advanced Neurotoxicology, Iowa State University, Ames, IA 50011-1250.), posted in PubMed, researchers mentioned in abstract that . Notably, treatment with resveratrol almost completely attenuated MA-induced caspase-3 activity, but only partially reduced apoptotic cell death. We conclude that the neuroprotective effect of resveratrol is at least in part mediated by suppression of caspase-3 dependent cell death pathways. Collectively, our results demonstrate that resveratrol can attenuate MA-induced apoptotic cell death and suggest that resveratrol or its analogs may have therapeutic benefits in mitigating MA-induced dopaminergic neurodegeneration.

2. Anti-Inflammation
In a study of "Resveratrol, MicroRNAs, Inflammation, and Cancer." by Tili E, Michaille JJ. (Source from Department of Molecular Virology, Immunology, and Medical Genetics, Ohio State University, Biomedical Research Tower, 460 W 12th Avenue, Columbus, OH 43210, USA.), posted in PubMed, researchers mentioned in abstract that the above microRNAs are thought to link inflammation and cancer. Recently, resveratrol (trans-3,4',5-trihydroxystilbene), a natural polyphenol with antioxidant, anti-inflammatory, and anticancer properties, currently at the stage of preclinical studies for human cancer prevention, has been shown to induce the expression of miR-663, a tumor-suppressor and anti-inflammatory microRNA, while downregulating miR-155 and miR-21.

3. Oxidative stress
In a study of " Resveratrol up-regulates SIRT1 and inhibits cellular oxidative stress in the diabetic milieu: mechanistic insights." by Yun JM, Chien A, Jialal I, Devaraj S. (Copyright © 2011 Elsevier Inc. All rights reserved.), reseachers wrote in abstract that In this study, we tested the protective effect of resveratrol on cellular oxidative stress through the SIRT1-FOXO pathway under high-glucose conditions. Human monocytic (THP-1) cells were cultured in the presence of mannitol (osmolar control) or normoglycemic (NG, 5.5 mmol/l glucose) or hyperglycemic (HG, 25 mmol/l glucose) conditions in absence or presence of resveratrol (3 and 6 μmol/l) for 48 h. We first examined SIRT1 activity and oxidative stress in monocytes of Type 1 diabetes mellitus (T1DM) patients compared with healthy controls. In T1DM patients, monocytic SIRT1 expression was significantly decreased and p47phox expression was increased compared with controls. Under HG in vitro, SIRT1 and FOXO3a were significantly decreased compared with NG, and this was reversed by resveratrol treatment, concomitant with reduction in HG-induced superoxide production and p47phox. Under HG, SIRT1 small interfering RNA (siRNA) inhibited FOXO3a, and there was no beneficial effect of resveratrol in siRNA-treated HG-induced cells.

D.7. Etc.

Treatments
A. In conventional medicine perspective
There are no specific medications to treat encephalitis, most common antiviral medication used is acyclovir (Zovirax). Depending to the specific symptoms, the following medication are recommended
1. Acyclovir (Zovirax) -- treats encephalitis against HSV, VZV, and EBV
In the study to tested for activity in vitro against herpes simplex virus types 1 and 2 (HSV-1 and HSV-2), human and murine cytomegalovirus (HCMV and MCMV), varicella-zoster virus (VZV), and Epstein-Barr virus (EBV), Dr. Kern ER, adn the research team at theUniversity of Alabama at Birmingham shoowed that these compounds [A second generation, the 2,2-bis-hydroxymethyl derivatives, were synthesized, and 18 compounds] were tested for activity in vitro against herpes simplex virus types 1 and 2 (HSV-1 and HSV-2), human and murine cytomegalovirus (HCMV and MCMV), varicella-zoster virus (VZV), and Epstein-Barr virus (EBV) are phosphorylated by the ppUL97 phosphotransferase and are potent inhibitors of viral DNA synthesis. These results indicate that at least one of these compounds may have potential for use in treating CMV and other herpesvirus infections in humans(74)

2. Ganciclovir (Cytovene) treats encephalitis agaimst cytomegalovirus and HSV1
In the study to report a case of recurrent cytomegalovirus (CMV) corneal endotheliitis after penetrating keratoplasty, scientists at the  Taipei City Hospital showed that CMV DNA was detected from the excised corneal button, and aqueous humor revealed positive results for CMV and HSV1 by PCR. Confocal microscopy showed large corneal endothelial cells, consistent with the typical owl's eye morphology of CMV endotheliitis. After systemic ganciclovir was administered, the pigmented KPs and coin-shaped lesions gradually decreased(75)

3. Antiepileptic drug -- treat against seizures associated with encephalitis
In the study to pressing need for consistent, evidence-based guidelines in the management of neonatal seizures by pediatric, neurologists and neonatologists, neurologists and neonatologists at the Tel Aviv Sourasky Medical Center and Sackler School of Medicine completed a 20-item, self-administered questionnaire on choices of antiepileptic drugs, treatment of intractable neonatal seizures (unremitting seizures after 3 medications), treatment duration, and recommended workup. The responding 36/55 (65%) neurologists and 66/112 (59%) neonatologists made similar  choices (phenobarbital as first line, phenytoin as second line, and benzodiazepines as third line), called for controlled clinical trials to establish protocols for (1) diagnosing neonatal seizures, (2) studying the efficacy and safety of new-generation antiepileptic drugs, and (3) determining optimal duration of drug administration(76).

4. Etc.

B. In herbal perspective
B.1. Green tea (Camellia sinensis)
1. Immune systemIn the investigation of the immunomodulatory effects of decaffeinated green tea extract in rain bow of the study of "Immunomodulatory effects of decaffeinated green tea (Camellia sinensis) on the immune system of rainbow trout (Oncorhynchus mykiss)" by Sheikhzadeh N, Nofouzi K, Delazar A, Oushani AK, researchers found that showed that decaffeinated green tea in lower doses of administration could be optimum to enhance the immunity of rainbow trout(77).

2. Antimicrobial activities
In the investigation of Antimicrobial activities of green of the study of "Antimicrobial activities of tea catechins and theaflavins and tea extracts against Bacillus cereus" by Friedman M, Henika PR, Levin CE, Mandrell RE, Kozukue N., researchers found that flavonoids in green tea has exerted its ability in protective effects against Bacillus cereus(78).

3. Antioxidant activity
In the determination of Green and black tea polyphenols and their strong antioxidant activity of the study of "Bioavailability and antioxidant activity of tea flavanols after consumption of green tea, black tea, or a green tea extract supplement" by Henning SM, Niu Y, Lee NH, Thames GD, Minutti RR, Wang H, Go VL, Heber D., researchers concluded that green tea extract supplements retain the beneficial effects of green and black tea and may be used in future chemoprevention studies to provide a large dose of tea polyphenols without the side effects of caffeine associated with green and black tea beverages(79).

B.2. Cat's claw (Uncaria tomentosa)
1. Anti-inflammatory and antioxidant activities
Oral extract of Cat's claw has demonstrated the activity of protection against indomethacin-induced gastritis, and prevention of TNFalpha mRNA expression and apoptosis, according to the study of `Anti-inflammatory and antioxidant activities of cat's claw (Uncaria tomentosa and Uncaria guianensis) are independent of their alkaloid content`by Sandoval M, Okuhama NN, Zhang XJ, Condezo LA, Lao J, Angeles' FM, Musah RA, Bobrowski P, Miller MJ.(80)

2. Antimicrobial activity
Cat`s claw has exerted antimicrobial activity against microorganisms frequently found in infected root-filled teeth, including Enterococcus faecalis, Staphylococcus aureus, and Candida albicans, according to the study of `In vitro antimicrobial activity of phytotherapic Uncaria tomentosa against endodontic pathogens`by Herrera DR, Tay LY, Rezende EC, Kozlowski VA Jr, Santos EB(81)

3. Garlic (Allium sativum)
In the study of the Extracts of aged fresh garlic that are aged over a prolonged period and its antioxidant effects found that the ability of AGE to protect against oxidant-induced disease, acute damage from aging, radiation and chemical exposure, and long-term toxic damage. Although additional observations are warranted in humans, compelling evidence supports the beneficial health effects attributed to AGE, i.e., reducing the risk of cardiovascular disease, stroke, cancer and aging, including the oxidant-mediated brain cell damage that is implicated in Alzheimer's disease, according to "Antioxidant health effects of aged garlic extract" by Borek C.(48)

B.4. Astragalus (Astragalus membranaceus)
1. Immune system
Astragalus polysaccharides (APS) isolated from astragalus enhances the immune system by enhancing and regulating the function of T cells, by suppressing the CD4(+)CD25(+)Treg activity, at least in part, via binding TLR4 on Tregs and trigger a shift of Th2 to Th1, according to the study of "Astragalus polysaccharides attenuate postburn sepsis via inhibiting negative immunoregulation of CD4+ CD25(high) T cells" by Liu QY, Yao YM, Yu Y, Dong N, Sheng ZY., posted in PubMed(82)

2. Anti-inflammation
Astragalus has exerted an anti-inflammatory effect as a result of inactivation the p38 and Erk1/2 and inhibition NFkappaB-mediated transcription, according to the study of "Astragali Radix elicits anti-inflammation via activation of MKP-1, concomitant with attenuation of p38 and Erk" by Ryu M, Kim EH, Chun M, Kang S, Shim B, Yu YB, Jeong G, Lee JS., posted in PubMed(83)

B.5. Elder (Sambucus)
1. Immunostimulatory propertie
In the study of five herbal remedies--Sambucol Black Elderberry Extract, Sambucol Active Defense Formula and Sambucol for Kids (with known antiviral properties), Protec and Chizukit N (containing propolis and Echinacea, claimed to be immune enhancers) and their anti-inflammatory cytokines effects found that The three Sambucol formulations activate the healthy immune system by increasing inflammatory and anti-inflammatory cytokines production, while the effect of Protec and Chizukit N is much less. Sambucol could therefore have immunostimulatory properties when administered to patients suffering from influenza (as shown before), or immunodepressed cancer or AIDS patients who are receiving chemotherapy or other treatments, according to "The effect of herbal remedies on the production of human inflammatory and anti-inflammatory cytokines" by Barak V, Birkenfeld S, Halperin T, Kalickman I.(84)

2. Anti-inflammatory effects
In the demonstration of Mucin-specific lectin from Sambucus sieboldiana (SSA-M) and it effect onanti- chronically inflammatory diseases found that an additional mechanism of the anti-inflammatory activity of ursolic acid by demonstrating its ability to inhibit TNFα-stimulated expression of VCAM-1 and ICAM-1 and support the traditional use of extracts and preparations of Sambucus ebulus L., rich in ursolic acid, for the treatment of chronically inflammatory processes, according to "Identification and pharmacological characterization of the anti-inflammatory principal of the leaves of dwarf elder (Sambucus ebulus L.)" by Schwaiger S, Zeller I, Pölzelbauer P, Frotschnig S, Laufer G, Messner B, Pieri V, Stuppner H, Bernhard D.(85)

B.6. Etc.
 
C. In Chinese medicine perspective(86)
Traditional Chinese medicine defined Encephalitis as a condition of  acute febrile disease as pathogenic warm factor entering the body, or invasion of the heat into the pericardium, or disturbance of the heart by phlegmatic fire or the inward invasion of the weak wind.
C.1. Encephalitis as Pathogenic warm factor entering the body
1. Symptoms are not limit to
Fever, headache, perspiration, chilly sensation, pain of the throat, thirst, stiffness of the neck, mental confusion, delirium, convulsions, thin white or slight yellowish coating of the tongue and rapid pulsem etc.

2. The formula  Bai Hu Tang Jia Jian. The aim is to purify the Qi with pungent-cold drugs and to detoxify the body. Ingredients include
      Gypsum 60g,
      Root of Zhejiang figwort 30,
     Tuber of dwarf lilyturf 30g
     Fresh or dried rehmannia 30g
     Rhizome of wind-weed 12g
     Honeysuckle flower 30g
     Weeping forsythia (fruit) 30g
     Common red rhizome 30g
     Dryers woad root  30g
     Dryers woad leaf 30g
     Cicada slough  20g
     Larva of a silkworm with batrytis  10g
     Licorice root  6g



C.2. Encephalitis as invasion of the heat into the pericardium
1. Symptoms are nor limit to
Fever, headache, mental confusion, stupor, delirium, tremors, yellow coating of the tongue with dark red colour, and full pulse, etc.
2.  The fomula Qing Ying Tang Jia Jian. The aim is to to purge the pathogenic fire and calm the wind with Qing Ying Tang Jia Jian. In gredients include
 
     Gypsum 60g
     Rhizome of wind-weed 12g
     Fresh or dried rehmannia 20g
     Root of Zhejiang figwort 30g
     Root-bark of peony 15g
     Dyers woad root  30g
     Dyers woad leaf 30g
     Rhubarb  10g
     Jack-in-the-pulpit 12g
     Tabasheer 12g
     Earthworm 15g
     Scorpion  15 pieces
     Centipede 1 or 2 pieces
      Buffalo horn  30g
 
C. 3. Encephalitis as disturbance of the heart by phlegmatic fire.
1. Symptoms are not limit to
Mental confusion, delirium, mania and excitability, or spitting sputum and saliva, red tongue with yellowish and glossy coating, slippery and rapid pulse, etc.
2. The formula Dao Tan Tang Jia Jian. The aim is to reduce phlegm for resuscitation. Ingredients include
      Dried old orange peel  12g
      Pinellia  12g
      Tuckahoe  10g
      Licorice root 6g
      Jack-in-the-pulpit 12g
      Fruit of immature citron or trifoliate orange  12g
      Tabasheer 12g
      Grass-leaved sweetflag  12g
      Root-tuber of aromatic turmeric  12g
      Bamboo shavings  12g
      Musk  0.06g
      Bamboo juice 3 or 4 spoonful

D.  Encephalitis as the inward invasion of the weak wind.
1. Symptoms are not limit to
Dizziness, convulsions or tremor, flushed face, hot palms and soles, dysphoria, restlessness, insomnia, dry throat and mouth, dark red tongue with reduced saliva, weak and rapid pulse.

2. The formula Da Ding Feng Zu Tang Jia Jian. The aim is  to calm the "wind" through nourishing the Yin. Ingredients include
     Root of herbaceous  30g
     Donkey-hide gelatin  12g
     Tortoise plastron 20g
     Dried rehmannia 20g
     Fructus cannabis 20g
     Fruit of Chinese magnaliavine 20g
     Tuber of dwarf lilyturf 30g
     Oyster 30g
     Turtle-shell 30g
     Radix glycyrrhizae 6g
     Egg core 6g

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(54) http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1348426/ 
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(84) http://www.ncbi.nlm.nih.gov/pubmed/12455180
(85) http://www.ncbi.nlm.nih.gov/pubmed/21040770
(86) http://tcmdiscovery.com/Sino-western-Joint/info/20081205_1751_2.html



 

Saturday, April 28, 2012

Fainting (Syncope) The article

I. Fainting also known as Syncope of "black out" is defined as a condition of sudden loss of consciousness followed by the return to full wakefulness in a short duration as a result of  abnormally low blood pressure. In most cases, it is caused by hypotension, with blood pressure that's lower than 90/60 mmHg.(1). Even though Low blood pressure has mainly been regarded as good health for people who exercise, but recent studies have indicated an association with depression in elderly people. there are epidemiological evidence for an association of low blood pressure with anxiety and depression, which is not caused by cardiovascular disease.(2). In some case, severely low blood pressure can seriously impair adequate blood flow to vital organs and a life-threatening condition called shock.

II. Symptoms
In the study of Medical Centre/University of Amsterdam, the research team of Wieling W found that Prior to loss of consciousness the affected individual tends to exhibit unclear thinking[1], followed by fixation of the eyes[2] in the midline and a 'frozen' appearance[3]. Narrowing of the field of vision with loss of colour vision[4] ('greying' out) and finally a complete loss of vision[5] (hence 'blacking' out) occurs. Hearing loss[6] may occur following loss of vision. This process may take as little as approximately 7 s in cases of sudden complete circulatory arrest[7] (e.g. abrupt asystole), but in other circumstances it may take longer depending on the rate and depth of cerebral hypoperfusion[8]. Complete loss of consciousness occurs with the 'turning up' of the eyeballs. Profound cerebral hypoperfusion may be accompanied by myoclonic jerks[9].(3)

III. Causes and risk factors
Causes of fainting may be a result of your heart rate and blood vessels can't react fast enough when your body's need for oxygen changes
1. History of any cardiovascular disease and and cardiac arrhythmias
 In  a study of consecutive patients evaluated for syncope from 1996 through 1998 at an academic medical center, we documented causes, clinical characteristics, and recurrence of syncope while driving. Of 3877 patients identified, 381 (9.8%) had syncope while driving (driving group). Compared with the 3496 patients (90.2%) who did not have syncope while driving, the driving group was younger (P=0.01) and had higher percentages of male patients (P<0.001) and patients with a history of any cardiovascular disease (P=0.01) and stroke (P=0.02). Syncope while driving was commonly caused by neurally mediated syncope (37.3%) and cardiac arrhythmias (11.8%). Long-term survival in the driving group was comparable to that of an age- and sex-matched cohort from the Minnesota population (P=0.15). Among the driving group, syncope recurred in 72 patients, 35 of whom (48.6%) had recurrence >6 months after the initial evaluation. Recurrences during driving happened in 10 patients in the driving group, 7 of which (70%) were >12 months after the initial evaluation.(4)

2. Low blood pressure 
researchers suggested that Syncope due to orthostatic hypotension (OH) refers to loss of consciousness caused by hypotension induced by the upright position; it is an important risk factor for fall-related physical injuries, especially in the elderly adults(5). Other report indicated that eventhough Low blood pressure has mainly been regarded as good health for people who exercise, but recent studies have indicated an association with depression in elderly people. there are epidemiological evidence for an association of low blood pressure with anxiety and depression, which is not caused by cardiovascular disease.

3.  Parkinson's disease and neurological comorbidity in olders
Low blood pressure is considered as a major cause of fainting of patient older than 65 years as a result of  Parkinson's disease and neurological comorbidity. (5)

4.  Medication
there is a report that in patients with AD treated with donepezil, a noninvasive evaluation identified a probable cause of syncope in over two-thirds of patients. Cardiovascular abnormalities were predominant. Noninvasive evaluation is recommended before discontinuing treatment with cholinesterase inhibitors in patients with AD and unexplained syncope.(6)

5. Hemodynamic ischemia 
There a report that a patient with convulsive syncope whose convulsive movements seemed to be associated with transient hemodynamic ischemia in the basal ganglia. In Single-photon emission computed tomography (SPECT, a significant decrease in blood flow was revealed in the anterior part of the left basal ganglia, bilateral frontal areas, and right cerebellar hemisphere. An alteration in the functional balance between the basal ganglia and the cerebral cortices may play a role in the generation of convulsive movements in patients with convulsive syncope.(7)

6. Vertebrobasilar disease
Vertebrobasilar disease is a broad classification describing the condition where there is an insufficient delivery of blood flow via the vertebral and/or basilar arteries to the brain.(8)

7. Vasovagal (situational) syncope
A vasovagal episode or vasovagal response or vasovagal attack (also called neurocardiogenic syncope) is a malaise mediated by the vagus nerve. When it leads to syncope or "fainting", it is called a vasovagal syncope, which is the most common type of fainting(9)

8. Deglutition syncope 
Deglutition suncope is defined as a  loss of consciousness on swallowing. There are report that a 49-year-old woman was referred to the ENT department with a 1.5-year history of dysphagia accompanied by globus sensation and regurgitation as well as recurrent syncopal attacks associated with swallowing solid foods(10) and a case of swallow syncope associated with cold beverage ingestion(11) and a woman who faints when she eats and drinks(12) may be as a result of an ambulatory electrocardiogram revealed atrial and ventricular asystoles immediately after swallowing (13)

9. Cardiac syncope
Structural cardiac abnormalities may cause syncope include cardiac obstructions, pulmonary hypertension, and myocardiopathy. Children with congenital heart disease who experienced syncope should always be referred to a specialist. Primary arrhythmias which are easily diagnosed on ECG are complete atrio-ventricular block and Wolff-Parkinson-White syndrome. "Channelopathies" such as the long OT syndrome and catecholaminergic ventricular tachycardia are increasingly recognized in children, carry a high risk of sudden death and deserve a complete work up, including familial screening and lifelong treatment with beta-blockers(14)

10. History of diaphoresis In the investigation of   whether the pattern of presyncopal prodromal symptoms can predict the recurrence probability of vasovagal syncope, fifty-four patients (68.4%) reported at least one of the four main prodromal symptoms. Median syncopal +/- presyncopal spells were 4 episodes. Forty-two patients (53.2%) experienced recurrence of syncope or presyncope during the follow-up period. In recurrent symptomatic patients, diaphoresis had been more significantly reported in their past medical history (p = 0.018) and they had more syncopal spells before TTT (p = 0.001). Age, gender and type of TTT response did not have any effect on the recurrence of VVS.(15)

11.  Prolonged exercise
Some researchers suggested that the magnitude of exercise-induced hypotension (post-exercise hypotension; PEH), and the hypotensive response to postural change (initial orthostatic hypotension; IOH) are predictors of syncope post-exercise, but research team from the University of Otago, found that endurance athletes who present with greater hypotension are not necessarily at a greater risk of syncope than those who present with lesser reductions in BP.(16)

12.  Chiari type I malformation (CMI)
Chiari type I malformation (CMI) is a congenital hindbrain anomaly characterized by downward displacement of the cerebellar tonsils through the foramen magnum. Chiari type I malformation often presents with a complex clinical picture and can be sporadic or linked to a variety of genetic conditions. (17)

13. Low blood sugar
In the study of Syncope and Hypoglycemia posted in International Journal of Clinical Medicine, 2011, 2, 129-132 doi:10.4236/ijcm.2011.22023 Published Online May 201, showed that hypoglycemic syncope should be sus-pected in older diabetic patients with preserved postural tone, usually but not always using insulin therapy, who show a slow recovery from transient loss of consciousness with persisting neurological impairment and low blood glucose levels.(18)

14. Dehydration 
Dehydration  is defined as a condition of  the excessive loss of body fluid. of which can lead to symptoms of decreased blood pressure (hypotension), and dizziness or fainting(19)

15. Family history
In the study conducted by Johns Hopkins Bloomberg School of Public Health, researchers showed that family history of fainting is not a risk factor for adult-onset NMH in fatigued veterans. Our findings may differ from other studies of familial aggregation in NMH because of study methods or because NMH-fatiguers may differ from NMH-fainters.(20)

16. Pregnancy
A 23-year-old woman at 34 weeks' gestation developed recurrent syncope due to profound sinus arrest captured on electrocardiography. Syncopal events occurred in the same sitting position. An echocardiogram revealed severe collapse of the inferior vena cava each time the patient changed her posture from a supine to a sitting position, which was related to the syncope.(21)

17. Etc.

IV. Diagnosis
In the Part 1 of two-part unit outlines. Dr. Meyer A. indicated that the various possible causes of transient loss of consciousness (blackouts), the importance of accurate diagnosis and the impact of misdiagnosis. It also discusses the establishment of specialist clinics in order to help with diagnosis and management.
(22) Other researchers suggested that Syncope is much more common than epilepsy and may present with symptoms akin to the latter. This fact is not well appreciated and often leads to misdiagnosis.(23)
A. Misdiagnosis
1. Seizure
Neurocardiogenic syncope (NCS) can be mistaken as a seizure. Scientists at the Capital Health Authority found that NCS is commonly misdiagnosed as epilepsy. Some patients had an incorrect diagnosis for > 10 years. Patients with this misdiagnosis are often excessively investigated, inappropriately treated, and have unnecessary restrictions placed on driving and employment(24)

2. Cardiac arrest
In the report of presents two patients, both known to have cardiac disease, with implanted cardiac devices, who presented with loss of consciousness, who were initially investigated for epilepsy, but were subsequently shown to have had a cardiac arrhythmia, diagnosed following device interrogation.(25)

3. Status cataplecticus 
A 76-year-old patient, since the age of 45, presented with frequent attacks often triggered by emotional stimuli and characterised by forward head drop and a fall to the ground without loss of consciousness. Status cataplecticus misdiagnosed as recurrent syncope(26)

4. Etc.

B. Diagnosis
1. According to the University of Wisconsin School of Medicine suggestion in Diagnosing syncope. Part 1, Dr. Linzer M,  and the team indicated that Despite the absence of a diagnostic gold standard and the paucity of data from randomized trials, several points emerge. First, history, physical examination, and electrocardiography are the core of the syncope workup (combined diagnostic yield, 50%). Second, neurologic testing is rarely helpful unless additional neurologic signs or symptoms are present (diagnostic yield of electroencephalography, computed tomography, and Doppler ultrasonography, 2% to 6%). Third, patients in whom heart disease is known or suspected or those with exertional syncope are at higher risk for adverse outcomes and should have cardiac testing, including echocardiography, stress testing. Holter monitoring, or intracardiac electrophysiologic studies, alone or in combination (diagnostic yields, 5% to 35%). Fourth, syncope in the elderly often results from polypharmacy and abnormal physiologic responses to daily events. Fifth, long-term loop electrocardiography (diagnostic yield, 25% to 35%) and tilt testing (diagnostic yield < or = 60%) are most useful in patients with recurrent syncope in whom heart disease is not suspected. Sixth, psychiatric evaluation can detect mental disorders associated with syncope in up to 25% of cases. Seventh, hospitalization may be indicated for patients at high risk for cardiac syncope (those with an abnormal electrocardiogram, organic heart disease, chest pain, history of arrhythmia, age > 70 years) or with acute neurologic signs and suggested that Many tests for syncope have a low diagnostic yield. A careful history, physical examination, and electrocardiography will provide a diagnosis or determine whether diagnostic testing is necessary in most patients.(27)

2. According to the University of Wisconsin School of Medicine suggestion in Diagnosing syncope. Part 2. Dr. Linzer M,  and the team indicated that after a thorough history, physical examination, and electrocardiography, the cause of syncope remains undiagnosed in 50% of patients. In such patients, information may be derived from the results of carefully selected diagnostic tests, especially 1) electrophysiologic studies in patients with organic heart disease, 2) Holter monitoring or telemetry in patients known to have or suspected of having heart disease, 3) loop monitoring in patients with frequent events and normal hearts, 4) psychiatric evaluation in patients with frequent events and no injury, and 5) tilt-table testing in patients who have infrequent events or in whom vasovagal syncope is suspected. Hospitalization is indicated for high-risk patients, especially those with known heart disease and elderly patients.(28)
 
V. Preventions
A. Do and do not list
1. Avoid fatigue
  It may be the result of the physiological mechanisms that regulate blood pressure and actually trigger neurally mediated hypotension, because of miscommunication between the heart and the brain which causes blood pressure to lower when it should rise.(29)

2. Anxiety, fear, pain, intense emotional stress, hunger, or use of alcohol or drug
Sometime, you may suffer a simple fainting spell as a result of anxiety, fear, pain, intense emotional stress, hunger, or use of alcohol or drugs. Most people who suffer from simple fainting have no underlying heart or neurological (nerve or brain) problem.(30)

3. Avoid changing positions quickly and standing for long periods of time, always getting up from a sitting or lying-down position slowly by preventing postural hypotension cause of fainting

4. Drink plenty of fluids
At least 8-10 glasses per day is necessary to enhance the blood volume.

5. Aerobic exercise
Aerobic exercise can also help prevent fainting, and strengthening the leg muscles can improve the circulation and helps avoid pooling of blood in the lower part of the body.

6. Sleep with the foot of your bed raised
The position will promote blood flow to the brain and allow the blood trapped in the legs to return to the heart.

7. Avoid Wearing elastic stockings 
As this may cause blood to be trapped in the leg of which reduce blood flow to the brain

8. Medication, such as diuretic, Vasodilators (hydralazine, nitrates, angiotensin-converting enzyme inhibitors may cause the drop of blood pressure excessively

9. Tight clothing around the neck can reduce blood flow to the brain

10. Avoid caffeine
Too much caffeine may cause an arrhythmia(31), a fast or irregular heartbeat of that can lead chest pain, fainting, dizziness, shortness of breath, etc.

11. Etc.
B. Diet against syncope 
1. Salmon
a. Cardiovascular disease
It contains high levels of Omega-3 Fatty Acids that helps to reduce the levels of bad cholesterol, thus reducing the risk of hardening of arteries and veins and damaging the functions of amino acids in repairing the cardiovascular tissues according to the study of "Fish oil for the treatment of cardiovascular disease" by Weitz D, Weintraub H, Fisher E, Schwartzbard AZ, posted in PubMed(32)

b. Antioxidants
In the research of the antioxidant effect of vitamin E after ingestion of salmon found that that megadoses of vitamin E, far from having pro-oxidative activity, actually increase the anti-oxidative capacity of the liver, especially after ingestion of salmon oil, according to "Effects of megadoses of dietary vitamin E on the antioxidant status of rats fed lard or salmon oil" by Flader D, Brandsch C, Hirche F, Eder K.(33) 


c. Omega 3 fatty acids
Omega 3 fatty acids is necessary to maintain the ratio of good and bad cholesterol, thus reducing the risk of cholesterol inflammation according to the study of "In vitro fatty acid enrichment of macrophages alters inflammatory response and net cholesterol accumulation" by Wang S, Wu D, Lamon-Fava S, Matthan NR, Honda KL, Lichtenstein AH., posted in PubMed (IV) and forming of free radical in the heart cells, leading to heart diseases. It also reduces the risk of plaque forming in the arterial wall, thus also decreasing the risk of stoke, according to the study of "N-3 vs. saturated fatty acids: effects on the arterial wall" by Sudheendran S, Chang CC, Deckelbaum RJ., posted in PubMed (34).

2. Flaxseed
a. Cardiovascular health
In the research of
Flaxseed and its effect on cardiovascular risk found that flaxseed can modestly reduce serum total and low-density lipoprotein cholesterol concentrations, reduce postprandial glucose absorption, decrease some markers of inflammation, and raise serum levels of the omega-3 fatty acids, ALA and eicosapentaenoic acid. Data on the antiplatelet, antioxidant, and hypotensive effects of flaxseed, however, are inconclusive. More research is needed to define the role of this functional food in reducing cardiovascular risk, according to "Flaxseed and cardiovascular risk' by Bloedon LT, Szapary PO.(35)

b.
Hypercholesterolemic atherosclerosis
In the evaluation of
Flaxseed (Type I flaxseed) and CDC-flaxseed (Type II flaxseed) and theirs effect onhypercholesterolemic atherosclerosis found that Type II flaxseed reduced the development of atherosclerosis by 69%, according to "Reduction of hypercholesterolemic atherosclerosis by CDC-flaxseed with very low alpha-linolenic acid" by Prasad K, Mantha SV, Muir AD, Westcott ND.(36) 

c. Omega 3 fatty acids
Besides well known for its benefits for the maintenance of a healthy cardio-vascular system, according to the study of "Omega-3 Fatty acids for cardiovascular disease prevention" by Defilippis AP, Blaha MJ, Jacobson TA, posted in PubMed(37) and proper ratio of Omega 3 and 6 fatty acid and prevent blood clotting, it also extends the portion of your cycle in which you are fertile, by promoting natural ovulation, according tothe study of "Postpartum ovarian activity in multiparous Holstein cows treated with bovine somatotropin and fed n-3 fatty acids in early lactation" by Carriquiry M, Dahlen CR, Weber WJ, Lamb GC, Crooker BA., posted in pubMed (38)

3.  Garlic (39)
a, Garlic for VARICOSE VEINS. Garlic helps to keep your blood from clumping or becoming too sticky, helping your blood move through your blood vessels and reduces the risk of blood clots. One clove a day should do the trick. You can also take garlic capsules. CAUTION: Medication and Garlic could lead to uncontrolled bleeding and spell HEMORRHAGIC STROKES if it occurs in your brain. To avoid this, take caution against taking standardized garlic extract. Experts suggest eating no more than one clove of garlic a day.

b. Garlic For BLOOD FORTIFIER. Raw garlic is said to do a super job of blood fortifying. It also helps REJUVENATE the body. Eat raw garlic and garlic supplements daily.

c. Garlic For CHOLESTEROL: Eating 4 cloves of garlic a day can cut total CHOLESTEROL by 70%(Fresh or Supplement). The member of the allium family fights poor circulation.The sulfur compound in garlic keep your platelets from clumping together.

4. Black Beans
a. Nervous system
Protein is essential for the brain in transmitting information between themselves and cells in the other parts of the body, thus reducing the blood sugar levels from rising too rapidly after a meal, reducing the risk of nervous symptoms cause of anxiety, stress and depression, etc., according to the study of "The planar polarity protein Scribble1 is essential for neuronal plasticity and brain function" by Moreau MM, Piguel N, Papouin T, Koehl M, Durand CM, Rubio ME, Loll F, Richard EM, Mazzocco C, Racca C, Oliet SH, Abrous DN, Montcouquiol M, Sans N (40)


b. Antioxidant
Black bean contains flavoinoid, the powerful antioxidant (it contains more antioxidant than any bean in the same family with difference skin colors). It not only enhances the immune system in regulating cells in DNA replication and division, but also improves the immune system in fighting against the forming of free radical and protects our body from infection and inflammation. In a study of "Evaluation of Crocus sativus L. stigma phenolic and flavonoid compounds and its antioxidant activity" by Karimi E, Oskoueian E, Hendra R, Jaafar HZ., posted in Pubmed (41), researchers found that In summary, saffron stigmas showed antioxidant activity and methanol appeared to be the best solvent to extract the active components, among which the presence of gallic acid and pyrogallol might contribute towards the stigma's antioxidant properties.

c. Low-density lipoprotein
in the evaluation of fermentation on the contents of total phenolics and amino nitrogen pf balck bean and their lowering cholesterol effect found that the A. awamori-fermented black soybean prepared at 30 °C for 3 days exhibited the highest inhibitory effect on LDL oxidation. The bioactive principles related to the inhibitory effect on LDL oxidation in black soybeans, regardless of fermentation, could be most efficiently extracted with water rather than 80% methanol or 80% ethanol, according to "Fermentation with Aspergillus awamori enhanced contents of amino nitrogen and total phenolics as well as the low-density lipoprotein oxidation inhibitory activity of black soybeans" by Chen YF, Lee SL, Chou CC.(42) 

5.  Broccoli
a. Potential heart health benefits
In the investigation of cruciferous vegetables which include broccoli, cabbage and cauliflower and theirs bioactive components in functional foods effect for the improvement of health found that the molecular basis of the biological activities of the chemicals present in broccoli potentially responsible for health promotion, from chemoprevention to cardio protection, are outlined based on in vitro and in vivo studies with a note on the structure activity relationship of sulforaphane and a few other isothiocyanates, according to "Potential health benefits of broccoli- a chemico-biological overview" by Vasanthi HR, Mukherjee S, Das DK.(43) 

b. Free radicals 
Broccoli helps to fight against the forming of free radical by detoxificating and cleansing the toxins accumulated in the body, according to "Effect of broccoli (Brassica oleracea) and its phytochemical sulforaphane in balanced diets on the detoxification enzymes levels of tilapia (Oreochromis niloticus) exposed to a carcinogenic and mutagenic pollutant" by Villa-Cruz V, Davila J, Viana MT, Vazquez-Duhalt R.(44)  

6. Blueberries
a. Antioxidant Capacity
In the investigation of
Blueberry and blackberry wines commercially available in Illinois and theirs potential health benefits, found that fruit wines made from blueberries and blackberries may have potential health applications and therefore could contribute to the economy of the wine industry. Practical Application: The majority of wines are produced from grapes, but wine can also be produced from other fruits including blueberries and blackberries, which contain phenolic compounds that may contribute to human health, according to "Comparison of Chemical Composition and Antioxidant Capacity of Commercially Available Blueberry and Blackberry Wines in Illinois" by Johnson MH, Gonzalez de Mejia E.(45)

b. Cardiovascular health
In the
dete
rmination of polyphenols, especially anthocyanins, micronutrients, and fiber in berries, including to chokeberries, cranberries, blueberries, and strawberries found that purified anthocyanin extracts have demonstrated significant improvements in LDL oxidation, lipid peroxidation, total plasma antioxidant capacity, dyslipidemia, and glucose metabolism. Benefits were seen in healthy subjects and in those with existing metabolic risk factors. Underlying mechanisms for these beneficial effects are believed to include upregulation of endothelial nitric oxide synthase, decreased activities of carbohydrate digestive enzymes, decreased oxidative stress, and inhibition of inflammatory gene expression and foam cell formation. Though limited, these data support the recommendation of berries as an essential fruit group in a heart-healthy diet, according to " Berries: emerging impact on cardiovascular health" by Basu A, Rhone M, Lyons TJ.(46) 

8. Etc.

C. Nutritional supplement against syncope
1. Omega-3 fatty acids
a. Vascular smooth muscle tone
In the investigation of the comparative effects of omega-3, omega-6 and omega-9 fatty acids on vascular smooth muscle tone, showed that Docosahexaenoic acid (1-255 microM) and eicosapentaenoic acid (31-255 microM) inhibited phenylephrine-induced contractions, (8-63%) and (20-65%), respectively, which were not altered by indomethacin, NDGA, or by removal of the endothelium. Linoleic acid (18:2n6) and arachidonic acid (20:4n6) also induced significant relaxation. Therefore, fatty acid-induced relaxation of the rat aorta is specific to polyunsaturated fatty acids, 20:5n3, 22:6n3, 18:2n6 and 20:4n6, according to "Effects of omega-3, omega-6 and omega-9 fatty acids on vascular smooth muscle tone" by Engler MB.(47)

b. Systolic blood pressure, triglycerides and LDL cholesterol
In the ccomparison of the cardiovascular risk-reduction potential of three major polyunsaturated fatty acids in a double-blind study. showed that for the diet supplemented with EPA plus DHA compared with the linoleic acid diet systolic blood pressure fell 5.1 mm Hg (p = 0.01); plasma triglyceride and VLDL cholesterol fell by 39% (p = 0.001) and 49% (p = 0.01), respectively; and LDL cholesterol rose by 9% (p = 0.01). There were no significant changes with the diet supplemented with alpha-linolenic acid. The net effect on cardiovascular risk therefore is complex and the systolic blood pressure reduction was substantial, according to "n-3 fatty acids of marine origin lower systolic blood pressure and triglycerides but raise LDL cholesterol compared with n-3 and n-6 fatty acids from plants" by Kestin M, Clifton P, Belling GB, Nestel PJ.(48)

c. Cardiovascular effects
In the comparison of the effects of alpha-linolenic acid (ALA, C18:3n-3) to those of eicosapentaenoic acid (EPA, C20:5n-3) plus docosahexaenoic acid (DHA, C22:6n-3) on cardiovascular risk markers in healthy elderly subjects, found that Both n-3 fatty acid diets did not change concentrations of total-cholesterol, LDL-cholesterol, HDL-cholesterol, triacylglycerol and apoA-1 when compared with the oleic acid-rich diet. However, after the EPA/DHA-rich diet, LDL-cholesterol increased by 0.39 mmol/l (P = 0.0323, 95% CI (0.030, 0.780 mmol/l)) when compared with the ALA-rich diet. Intake of EPA/DHA also increased apoB concentrations by 14 mg/dl (P = 0.0031, 95% CI (4, 23 mg/dl)) and 12 mg/dl (P = 0.005, 95% CI (3, 21 mg/dl)) versus the oleic acid and ALA-rich diet, respectively. Except for an EPA/DHA-induced increase in tissue factor pathway inhibitor (TFPI) of 14.6% (P = 0.0184 versus ALA diet, 95% CI (1.5, 18.3%)), changes in markers of hemostasis and endothelial integrity did not reach statistical significance following consumption of the two n-3 fatty acid diets, according to "Effects of alpha-linolenic acid versus those of EPA/DHA on cardiovascular risk markers in healthy elderly subjects" by Goyens PL, Mensink RP.(49)

d. Cognitive effects
In the assessment of the cognitive effects of fish oil supplementation at college age, hypothesizing benefits on affect, executive control, inhibition, and verbal learning and memory. College-aged participants, indicated that the benefits of n-3 PUFA on RAVLT performance derived more from depreciated placebo performance than improved performance due to fish oil. The placebo gain on TMT performance likely derived from a learning effect. Together, these results present limited cognitive benefits of n-3 PUFA at college age; however, the treatment may have been subtherapeutic, with a larger sample needed to generalize these results, according to "Omega-3 polyunsaturated fatty acids and cognition in a college-aged population" by Karr JE, Grindstaff TR, Alexander JE.(50)

2. Antioxidant for heart health
2.1. Antioxidants and ischemia(51)
a. Nitric oxide (NO)

Nitric oxide (NO), one of the antioxidant and peroxynitrite can inhibit pathways of oxygen radical generation, and, in turn, oxidants can inhibit NO synthesis from NOS.

b. glutathione and vitamin E
Reduced form of glutathione may act as a first line of defense against oxidative stress during ischemia–reperfusion while vitamin E may act later on during severe oxidative stress by rendering resistance to the heart against the ischemic–reperfusion injury

c. 2-dithiole-3-thione (D3T)
Researcher found that in rat cardiac H9c2 cells, D3T and time-dependent induction of a number of cellular antioxidants and phase 2 enzymes, including catalase, reduced glutathione (GSH), GSH peroxidase, glutathione reductase (GR), GSH S-transferase (GST), and NADH:quinone oxidoreduc- tase-1 (NQO1) help to protect against H9c2 cell injury caused by various oxidants and simulated ischemia-reperfusion. D3T pretreatment also resulted in decreased intracellular accumulation of reactive oxygen in H9c2 cells after exposure to the oxidants as well as simulated ischemia-reperfusion.

d. Selenium
Deficeiency of of a co-enzyme selenium, which is required in maintaining the glutathione redox cycle, also promote more susceptible to oxidative injure.

e. Etc.
2.2. Antioxidants and Atherosclerosis(52)
a. Bioflavonoids or vitamin P
Discovered by Szent-Gyorgyi and his colleagues back in the 1930`s. In Laboratory tests, B
bioflavonoids help to reduce the fragility and “permeability” in capillaries and prevent the clotting up of arterial as a result of oxidation.

b. Vitamins C and E, beta-carotene
Recent research findings have suggested that antioxidants such as vitamin C, E and beta carotene play an important role in the prevention of atherosclerosis. Data from animal studies showed they are able to prevent oxidative modification of low density lipoproteins (LDL).

c. Alpha-tocopherol
Alpha-tocopherol, a antioxidant found abundant in vitamin E, helps to decrease lipid peroxidation and platelet aggregation, adhesion and inflammatory. Epidemiological studies suggest that low levels of antioxidants are associated with increased risk for cardiovascular disease.

d. Vitamin C and E
Studies showed in take of 500mg of vitamin C and 400 IU of vitamin E helps to retard the progression of coronary atherosclersis.

e. Chlorophyl
Antioxidant chorophyll in the green algae shows to inhibit the chemical cadmium of smoking, by preventing from oxidation that cause building up of plaque along the walls of arteries.

f. Etc.

3. Coenzyme Q10
 Lower CoQ10 is a risk factor to coronary artery disease and chronic heart failure (CHF) and mortality due to CHF suggest that low CoQ10 is another factor explaining the risk to cardiovascular disorder in depression.(53)

4. Acetyl-L-carnitine
a. Acetyl-L-carnitine prevented the marked cognitive decline otherwise observed in normal mice maintained on this challenge diet(54)

b. Many clinical trials have suggested Acetyl-L-carnitine (ALC) and propionyl-L-carnitine (PLC) as potential strategies in the management of peripheral arterial disease, heart and cerebral ischemia, and congestive heart failure(55)

5. Alpha-lipoic acid
Alpha-lipoic acid (LA) is highly effective in preventing the endotoxin-induced oxidative stress in the heart and in improving the glutathione redox system.(56)

6.  Allyl sulfides
a. Antioxidant against oxidation
According to the study of " Antioxidant Health Effects of Aged Garlic Extract" by Carmia Borek, posted in (Journal of Nutrition. 2001;131:1010S-1015S.)© 2001 The American Society for Nutritional Sciences, researcher found that AGE contains a wide range of antioxidants that can act in synergistic or additive fashion and protect cells against oxidative damage, thus helping to lower the risk of heart disease, stroke, cancer and Alzheimer’s disease and protect against toxic, tissue-damaging effects of ROS-producing radiation, including UV light, drugs used in therapy and chemicals in the environment and industry.(57)

b. Cholesterol, heart disease and stroke
In an article of "GARLICTHE BOUNTIFUL BULB" by Carmia Borek, Ph.D. posted in Life extension magazine, the author indicated that in the past 15 years, garlic supplementation studies have concentrated on the bulb's effects in reducing blood cholesterol and triglycerides (the form in which fat is transported in the blood). All studies did not agree with one another, given differences in the kind of garlic preparation, quality of standardization, doses and periods of treatment. But most findings showed that garlic slightly lowered blood cholesterol, LDL cholesterol and triglycerides with a consistent lowering of blood lipids seen in studies that used aged garlic extract as the supplement. For example, while a University of Oxford study showed that garlic powder, given to patients at 900 mg a day for six months, had no protective effects and did not lower cholesterol levels, a study at East Carolina University found that aged garlic extract given at 2.4-4.8 gm a day, for six months, lowered cholesterol by 5-7%, and reduced LDL, triglycerides and blood pressure in men with high cholesterol.(58)

c.  Blood circulation
In an article of "Onions, Garlic, and Scallions... Oh My!" By Dr. Leo Galland, M.D., and Jonathan Galland", posted in the Chritian Broacasting Network, the authors wrote that scientists believe the components in onions, garlic, and scallions called allyl sulfides and bioflavonoids are key to their powerful health benefits. For cardiovascular health, clinical experiments have shown regular consumption of garlic may help improve circulation and help decrease calcium deposits and the size of arterial plaque in coronary arteries. As for detoxification, one study found that eating fresh garlic and onions each day can help remove toxins from the body.(59)


7. Etc.
VI. Treatments
A. In conventional medicine perspective
1. Prehospital Care(60)
Acute care to someone faint must be taken to increase blood flow to the brain, such as with the legs raise, loosen all tight clothing, crossing the legs or squeezing the thighs together, etc. and call 911. The patient may require the below from the medical team.
a. Intravenous access
b. Oxygen administration
c. Advanced airway techniques
d. Glucose administration
e. Pharmacologic circulatory support
f. Pharmacologic or mechanical restraints
g. Defibrillation or temporary pacing
h. Etc


2. Medication
2.1. Beta blockers
a. Beta blockers or beta-adrenergic blocking agents, beta-adrenergic antagonists, beta-adrenoreceptor antagonists or beta antagonists are the most commonly used type of medication to prevent syncope, as a result of blunting of elevated catecholamine levels that precede vasovagal syncope. Dr. John R. Kapoor, MD, PhD at the Stanford University said "Notwithstanding the widespread use of beta-blockers in the past, some studies on chronic beta-blocker use have been less than encouraging and may suggest some benefit in older but not in younger patients, as mentioned in the recent article by Tan and Parry"(61). In other study group consisted of 62 patients (29 females, mean age 32.8+/-12.3 years and 33 males, mean age 35.9+/-18.2 years) with at least two syncopal episodes during the six months preceding positive tilt testing, propranolol administered intravenously prevents syncope during tilt testing in a significant proportion of patients. Both complete or partial efficacy of intravenous propranolol predict long-term efficacy of chronic beta blocker therapy in patients with vaso-vagal syncope.(62)

b. Side effects
Major cardiac effects caused by beta blockade include the precipitation or worsening of congestive heart failure, and significant negative chronotropy(62a) and severe and therapy-resistant rhinitis, sinusitis, and nasal polyp(62b)
and (62c)
* Nausea
* Diarrhea
* Bronchospasm
* Dyspnea
* Cold extremities
* Dizziness
* Hair loss
* Abnormal vision
* Insomnia
* Nightmares
* Sexual dysfunction
* Erectile dysfunction
* Etc.

2.2. Serotonin re-uptake inhibitor (SSRI)
a Antidepressants are commonly used in the treatment of depression, anxiety disorders, and some personality disorders. In the study to assess whether the well-tolerated serotonin re-uptake inhibitor paroxetine hydrochloride could prevent vasovagal syncope in young patients resistant to or intolerant of previous traditional therapies, Paroxetine significantly improved symptoms of young patients with recurrent vasovagal syncope unresponsive to or intolerant of traditional medications and was well tolerated by patients.(63). Other report indicated that the serotonin reuptake inhibitor sertraline hydrochloride can be effective in preventing recurrent neurocardiogenic syncope in selected patients unresponsive to or intolerant of other therapeutic modalities.(64)

b. Side effects (65)
Almost all SSRIs are known to cause one or more of these symptoms, including Sexual Dysfunction(66) and withdrawal syndrome(67), Suicide risk(68) and
* Nausea/vomiting
* Drowsiness or somnolence
* Headache (very common as a short-term side effect)
* Bruxism
*Tinnitus
* Extremely vivid or strange dreams
* Dizziness
* Fatigue
* Mydriasis (pupil dilation)
* Urinary retention
* Changes in appetite
* Insomnia
* Etc.
In rare case, SSRI antidepressants may cause cardiac effects, according to American Family Physician, 8/1/97 by Grace Brooke Huffman, but SSRIs are safe and do not have a high rate of cardiovascular adverse events. However, further study is needed to determine whether tricyclic antidepressants and SSRIs are equally efficacious in patients with cardiovascular disease.(69)


3. Surgical
Pacemaker implantation may be necessary for some patient because of either severity or do not respond to the medication to has been successful in decreasing the number of fainting episodes. Pacemaker implantation is a procedure to put a small battery-operated device into the chest to help the heart beating regularlyas it send out the regular electrical pulses. There is a report  on a patient with recurrent sleep syncope (with physical injury) in whom an asystolic pause was documented during one of her "sleep syncope" spells. Implantation of a dual chamber pacemaker (5-year follow-up) "cured" her of further syncope(70)

B. In herbal medicine perspective
1. Bilberry
a.  Antioxidants
Edible berries of bilberry contains high amounts of antioxidant of natural anthocyanin may be used to trigger genetic signaling in promoting human health and disease prevention, according to the study of "Berry anthocyanins as novel antioxidants in human health and disease prevention" by Zafra-Stone S, Yasmin T, Bagchi M, Chatterjee A, Vinson JA, Bagchi D., posted in PubMed(71)


b. Anti-angiogenic, antioxidant, and anti-carcinogenic properties
Anthocyanins, a natural compounds of pigmentation in bilberry is also considered as natural antioxidants have exerted the property of Anti-angiogenisis and genomic DNA repairment and protection in reducing the risk of cancers, according to the study of "Anti-angiogenic, antioxidant, and anti-carcinogenic properties of a novel anthocyanin-rich berry extract formula" by Bagchi D, Sen CK, Bagchi M, Atalay M., posted in PubMed(72)

c. Cardiotoxicity
Bilberry extract significantly inhibited DOX-provoked reduced glutathione depletion and accumulation of oxidized glutathione, malondialdehyde and protein carbonyls in cardiac tissues, according to the study of "Protective effect of bilberry (Vaccinium myrtillus) against doxorubicin-induced oxidative cardiotoxicity in rats" by Ashour OM, Elberry AA, Alahdal A, Al Mohamadi AM, Nagy AA, Abdel-Naim AB, Abdel-Sattar EA, Mohamadin AM., posted in PubMed(73)

d. Cholesterol
Oxidative modifications of low density lipoproteins (LDL) can be result of thickening of artery wall as a result of the accumulation of fatty, affecting arterial blood vessels. Vaccinium myrtillus contains high amount of antioxidants which help to block the oxidation of low density lipoproteins (LDL), according to the study of "Antioxidant action of Vaccinium myrtillus extract on human low density lipoproteins in vitro: initial observations" by Laplaud PM, Lelubre A, Chapman MJ., posted in PubMed(74)

2. Ginkbo Biloba
a. Cardiovascular tissues
Ginkgo biloba extract (EGb) has shown the protection of the cardiovascular tissues against HgCl(2)-induced oxidative damage, according to the study of "Protective effects of Ginkgo biloba extract against mercury(II)-induced cardiovascular oxidative damage in rats" by Tunali-Akbay T, Sener G, Salvarli H, Sehirli O, Yarat A., posted in PubMed(75)

b. Hyperlipidemia
Ginkgo biloba leaves (EGB) has demonstrated the activities of limitation of the absorption of cholesterol, inactivation of HMGCoA and favorable regulation of profiles of essential polyunsaturated fatty acid (EFA), according to the study of "Application of GC/MS-based metabonomic profiling in studying the lipid-regulating effects of Ginkgo biloba extract on diet-induced hyperlipidemia in rats" by Zhang Q, Wang GJ, A JY, Wu D, Zhu LL, Ma B, Du Y., posted in PubMed(76)

3. Peppermint
a. Cholesterol effects
In the investigation the choleretic effect and molecular mechanisms of action of peppermint oil (PO), the main component of Danshu capsules (Sichuan Jishengtang Pharmaceutical Co., Ltd., Pengzhou, Sichuan Province, China), found that PO might play a role in upregulating CYP7A1 and FXR mRNA levels, suggesting that the molecular mechanisms are related to gene expression involved in bile acid synthesis, according to "Preliminary experimental research on the mechanism of liver bile secretion stimulated by peppermint oil" by Zong L, Qu Y, Luo DX, Zhu ZY, Zhang S, Su Z, Shan JC, Gao XP, Lu LG.(77)

b. Cardiovascular effects
In the assessment of Cardiovascular effects of intravenous (i. v.) treatment with the essential oil of Mentha x villosa (EOMV) in pentobarbitone-anaesthetised rats, found that The present study shows for the first time that i. v. treatment with EOMV in pentobarbitone-anaesthetised rats induces hypotensive and bradycardic effects, which appear mostly attributed to the actions of the major constituent of EOMV, PO. These cardiovascular effects appear to be independent since EOMV-induced bradycardia appears dependent upon the presence of an intact and functional sympathetic nerve drive to the heart, while EOMV-induced hypotension appears independent of the presence of an operational sympathetic nervous system. This suggests that hypotensive activity of EOMV may result from its vasodilatory effects directly upon vascular smooth muscle, according to "Cardiovascular effects of the essential oil of Mentha x villosa and its main constituent, piperitenone oxide, in normotensive anaesthetised rats: role of the autonomic nervous system" by
Lahlou S, Carneiro-Leão RF, Leal-Cardoso JH, Toscano CF.(78)

c. Antimicrobial and antioxidant activities
In the observation of the antimicrobial activity and free radical scavenging capacity (RSC) of essential oils from Mentha aquatica L., Mentha longifolia L., and Mentha piperita L., found that The M. piperita essential oil also exhibited the highest OH radical scavenging activity, reducing OH radical generation in the Fenton reaction by 24 % (pure oil). According to GC-MS and TLC (dot-blot techniques), the most powerful scavenging compounds were monoterpene ketones (menthone and isomenthone) in the essential oils of M. longifolia and M. piperita and 1,8-cineole in the oil of M. aquatica, according to "Antimicrobial and antioxidant activities of three Mentha species essential oils" by Mimica-Dukić N, Bozin B, Soković M, Mihajlović B, Matavulj M.(79)

4. Rosemary
Rosemary contains high amount of carnosic acid, a natural benzenediol diterpene which has found to reduce the risk of free radical cause of cancers, according to "Inhibitory effects of rosemary extracts, carnosic acid and rosmarinic acid on the growth of various human cancer cell lines" by Yesil-Celiktas O, Sevimli C, Bedir E, Vardar-Sukan F.(80)

5. Lavender
a. Antioxidants
In the observation of total phenolics and total flavonoids for the extracts of three medicinal plants including oregano (Origanum vulgare L.), lavender (Lavandula angustifolia) and lemon balm (Melissa officinalis) found that Origanum vulgare and Melissa officinalis extracts present the most effective antioxidant capacity in scavenging DPPH radicals, while Lavandula angustifolia is less active. High performance liquid chromatography-mass spectrometry analysis was used to identify the components of extracts. Major phenolic acids identified in the analysed species were ferulic, rosmarinic, p-coumaric and caffeic, while predominant flavonoids were quercetin, apigenin kaempherol, which were present as glucosides, according to "Antioxidant capacity and total phenolic contents of oregano (Origanum vulgare), lavender (Lavandula angustifolia) and lemon balm (Melissa officinalis) from Romania"by Spiridon I, Colceru S, Anghel N, Teaca CA, Bodirlau R, Armatu A. (81)

b. Antidepressant-like effect
In the classification of the antidepressant effects of essential oils of Anthemis nobilis (chamomile), Salvia sclarea (clary sage; clary), Rosmarinus officinalis (rosemary), and Lavandula angustifolia (lavender)found that clary oil could be developed as a therapeutic agent for patients with depression and that the antidepressant-like effect of clary oil is closely associated with modulation of the DAnergic pathway, according to "Antidepressant-like effect of Salvia sclarea is explained by modulation of dopamine activities in rats" by Seol GH, Shim HS, Kim PJ, Moon HK, Lee KH, Shim I, Suh SH, Min SS.(82)

c. Cognition and mood
In the evaluation of Aromas of rosemary and lavender essential oils and theirs effect on cognition and mood found that rosemary produced a significant enhancement of performance for overall quality of memory and secondary memory factors, but also produced an impairment of speed of memory compared to controls. With regard to mood, comparisons of the change in ratings from baseline to post-test revealed that following the completion of the cognitive assessment battery, both the control and lavender groups were significantly less alert than the rosemary condition; however, the control group was significantly less content than both rosemary and lavender conditions. These findings indicate that the olfactory properties of these essential oils can produce objective effects on cognitive performance, as well as subjective effects on mood, according to "Aromas of rosemary and lavender essential oils differentially affect cognition and mood in healthy adults" by Moss M, Cook J, Wesnes K, Duckett P.(83)

d.  'Subsyndromal' anxiety disorder
In the investigation of orally administered Lavandula oil preparation and its effect on'subsyndromal' anxiety disorder, found that Lavandula oil preparation had a significant beneficial influence on quality and duration of sleep and improved general mental and physical health without causing any unwanted sedative or other drug specific effects. Lavandula oil preparation silexan is both efficacious and safe for the relief of anxiety disorder not otherwise specified. It has a clinically meaningful anxiolytic effect and alleviates anxiety related disturbed sleep, according to "Silexan, an orally administered Lavandula oil preparation, is effective in the treatment of 'subsyndromal' anxiety disorder: a randomized, double-blind, placebo controlled trial"by Kasper S, Gastpar M, Müller WE, Volz HP,
Möller HJ, Dienel A, Schläfke S.(84)

6. Etc.


C. In  Chinese medicine perspective
Depending to differentiation, some traditional Chinese TCM practitioners classify fainting (Syncope) as a result of (85)
C.1. Deficiency of the Heart yang and Kidney yang
1. Symptoms
a. Shortness of breath
b. Dizziness, occasional fainting,
c. Fatigue and weakness,
d. Tinnitus
e. Pain in the loins,
f. Aversion to cold,
g. Cold limbs,
h. Restlessness and insomnia
i. Pale thick or dark red tongue,
j. Thready,
l. Slow and uneven pulse
m. Etc.

2. Herbal treatment 
Modified prescriptions of Decoction for Protecting Primordial qi and Decoction of Ephedra, Aconite and Asarum. Prepared aconite root (Fu Zi) 6-20g, Red ginseng (Hong Seng) 10-30g, astragalus root (Huang Qi) 30g, Siberian solomonseal rhizome (Huang Jin) 30g, Cinnamon twig(Gui Zhi) 10g, Ephedra (Ma Huang) 6-12g, Asarum herb (Xi Xin) 3g, Prepared liquorice (Zhi Gan Cao) 6-30g

C.2. Deficiency of both qi and yin
1. Symptoms
a. Shortness of breath
b. Vague pain in the precordial region,
c. Dizziness
d. Blurred vision
c. Palpitation
f. Insomnia
g. Amnesia (memory loss
h. Dry mouth
i. Pale or dark red tongue with thin and white fur,
j. Slow or thready pulse
k. Etc.

2. Herbal treatment
Prescription/Formula: Modified Decoction of Prepared Licorice Prepared licorice root (Zhi Gan Cao) 30g, Dangshen (Dang Shen) 30g, Astragalus root (Huang Qi) 30g, Siberian solomonseal rhizome (Huang Jin) 30g, Dried rehmannia root Sheng Di Huang) 20g, Ophiopogon root (Mai Dong) 15g, Sesame kernel (Ma Ren)12g, Cinnamon twig (Gui Zhi) 10g, Chinese-date (Da Zao)10 pieces, Schisandra fruit (Wu Wei Zi) 10g

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Sources
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(8) http://surgery.med.umich.edu/vascular/patient/disease-specific/vertebrobasilar.shtml 
(9)  http://en.wikipedia.org/wiki/Vasovagal_response 
(10) http://www.ncbi.nlm.nih.gov/pubmed/22286303 
(11) http://www.ncbi.nlm.nih.gov/pubmed/22493619 
(12) http://www.ncbi.nlm.nih.gov/pubmed/21704625 
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