Sunday, May 20, 2018

All About Green Tea: Green Tea In in Ameliorated Hair Loss and Promoted Hair Re-Growth

Green tea may have a therapeutic and positive effect in reduced hair loss and stimulated hair growth, some scientists suggested.

Green tea, a precious drink processes numbers of health benefit known to almost everyone in Asia and Western world. However, as yin in nature herbal medicine or food, long term injection of large amounts may obstruct the balance of yin-yang, induced "yin excessive syndrome" or "yang vacuity syndrome" including weaken immunity and painful case of GERD,... according to traditional Chinese medicine's Yin-Yang theory.

Hair loss can be temporary or permanent but in most cases it is a result of the levels of by-product prolactin of testosterone of men increases, stimulating the production of the enzyme 5-alpha reductase that causes the conversion of testosterone to gihydro-testosterones DHT, leading to hair grow-back thinner or not grow-back at all, particularly in people with androgenic alopecia hair loss problem.

According to statistic, approximately 40% of men have noticeable hair loss by age 35, 65% by age 60, and 80% by age 80.

Green tea, bioactive polyphenolic compounds in attenuated hair loss were found to associate to several mechanisms, involved certain aspects.

The examine of green tea epigallocatechin-3-gallate (EGCG), a major constituent of polyphenol on human dermal papilla cells (DPCs) in the prevention or treatment of androgenetic alopecia showed that injection of the green tea extract express a strong effect in inhibition of 5alpha-reductase activity in conversion of testosterone to gihydro-testosterones DHT selectively in activated human dermal papilla cells (DPCs) in stimulated hair follicle growth.

Further analysis suggested that EGCG activity in enhanced growth of human dermal papilla cells (DPCs) was attributed to influence hair growth by dermal papilla cells proliferation through the activation of ERK pathways involved functions in regulation of cell cycle in division and Akt pathway in promoted cells survival and growth.

Additional observation also found that green tea extract also increased the ratio of Bcl-2/Bax which has been found to associate to lower dermal papilla cells apoptosis and stimulate hair follicle regrowth.

More interestingly, the evaluation of the effect of dihydrotestosterone (DHT) in induced androgenic alopecia by shortening the hair follicle growth phase, resulting in hair loss in animal models, application of green tea epigallocatechin gallate (EGCG) protected against dihydrotestosterone (DHT) in induction of mediated human dermal papilla cells (DPCs) death through cell cycle arrest, cell viability, the generation of reactive oxygen species (ROS), and senescence by inhibiting expression of alternated mRNA in human dermal papilla cells (DPCs) induced by dihydrotestosterone (DHT) activity, thus increasing the regrowth of hair follicle, subsequently, in stimulated hair to grow-back.

Dr. Shin S, the lead author of the study said, "EGCG ameliorates the negative effects of DHT by altering the miRNA expression profile in human DPCs".

Houttuynia cordata Thunb (HC), a traditional herbal medicine widely used in Asia for the treatment of patients with alopecia containing green tea (GT) as a major ingredient, in 25 days experiment of six-week-old male C57BL/6 mice randomly divided into four groups (negative control, finasteride (1 mg/kg),a positive control, and two group fed with 200 and 400 mg/kg concentrations expressed a strong effect of area of hair regrowth 70.2 % and 83.5 % respectively, in compared to of 55.1 % negative control group. And increased diameter of hair follicles was 11.9 μm, 17.4 μm and 22.8 (±5.2) μm also found in negative control, herbal complex 200 and 400 mg/kg group, respectively.

Further more, the application of herbal formula at the doses indicated also increased expression of insulin-like growth factor (IGF)-1 which has a direct implication on clinical improvement of hair growth and decreased expression of TGF-β1 alternated mRNA transcription activated by androgen in human dermal papilla cells (DPCs) to induce gradually hair loss.

Finally, on hair loss among rodents, 60 female Balb/black mice with hair loss on the head, neck and dorsal areas were assigned randomly assigned to group A fed with 50% fraction of polyphenol extract from dehydrated green tea in their drinking water for six months and Group B received regular drinking water, researchers after taking into account of other con founders, found that mice fed with green tea extract demonstrate a significant hair regrowth of 33% during six months of treatment in compared to no hair growth control.

Taken together, green tea with abundant bioactive polyphenols such as epigallocatechin-3-gallate (EGCG) may have a significantly clinical effect in promoted hair growth and ameliorated hair loss.
through many direct and indirect perspectives. Intake of green tea extract should be taken with special care as overdoses were found to induce acute liver toxicity in some reports.

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Author Biography
Kyle J. Norton (Scholar, Master of Nutrients, All right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published on line, including world wide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.

(1) Human hair growth enhancement in vitro by green tea epigallocatechin-3-gallate (EGCG) by Kwon OS1, Han JH, Yoo HG, Chung JH, Cho KH, Eun HC, Kim KH.(PubMed)
(2) Epigallocatechin Gallate-Mediated Alteration of the MicroRNA Expression Profile in 5α-Dihydrotestosterone-Treated Human Dermal Papilla Cells by Shin S1, Kim K1, Lee MJ1, Lee J1, Choi S1, Kim KS1, Ko JM1, Han H1, Kim SY1, Youn HJ2, Ahn KJ2, An IS3, An S1, Cha HJ1(PubMed)
(3) The effects of tea polyphenolic compounds on hair loss among rodents by Esfandiari A1, Kelley P.(PubMed)
(4) An Asian traditional herbal complex containing Houttuynia cordata Thunb, Perilla frutescens Var. acuta and green tea stimulates hair growth in mice by Chung MS1, Bae WJ2,3, Choi SW3, Lee KW3, Jeong HC3, Bashraheel F3, Jeon SH3, Jung JW1, Yoon BI1, Kwon EB2,4, Oh HA4, Hwang SY4, Kim SW5,6.(PubMed)

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