Friday, December 8, 2017

Hormone Dopamine: Dopamine and natriuresis (sodium loss) in the kidneys

Kyle J. Norton(Scholar and 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.,.
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Some articles have been used as references in medical research, such as international journal Pharma and Bio science, ISSN 0975-6299.                     

                        Hormone Catecholamines


Catecholamines, derived from the amino acid tyrosine, produced by the adrenal glands, which are found on top of the kidneys. are epinephrine (adrenaline), norepinephrine (noradrenaline) and dopamine. The hormone are released into the blood during times of physical or emotional stress.

     Hormone Dopamine: Dopamine and natriuresis (sodium loss) in the kidneys



Diuretic and natriuretic effects of renal dopamine (DA) are well established. In the study of male Wistar rats to determine the pattern of UDAV during volume expansion and to characterize the involvement of monoamine-oxidase (MAO) and aromatic amino-acid decarboxylase (AADC) , found that in C rats UDAV (ng/30 min/100g BWt) increased in the first 30 min expansion from 11.5 +/- 1.20 to 21.8 +/- 3.10 (p < 0.05) and decreased thereafter. IMAO showed a similar pattern but significantly higher than C at 30 min expansion (32.5 +/- 2.20, p < 0.05). IMAO greatly reduced MAO activity from 8.29 +/- 0.35 to 1.1 +/- 0.03 nmol/mg tissue/hour and significantly increased diuresis and natriuresis over controls. BNZ abolished the early UDAV peak to 3.2+/-0.72 (p < 0.01) and though, UDAV increased over C after 60 min expansion, natriuresis and diuresis were diminished by BNZ treatment. Results indicate that an increment in renal DA release into urine occurs early in expansion and in a peak-shaped way.(21).


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Sources
(21) http://www.ncbi.nlm.nih.gov/pubmed/20228026

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