Friday, November 24, 2017

Hormone Dopamine: Dopamine receptors and cognitive and motor function

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.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
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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 receptors and cognitive and motor function



According to the study by, Columbia University College of Physicians & Surgeons, repeated administration of this methamphetamine (5 mg/kg administered three times at 2-h intervals) leads to a transition from horizontal hyperlocomotion to excessive orofacial stereotypy (taffy pulling) only in wild type and D3 mutants. In both genotypes, this transition is accompanied by a change in the relative ratios of striatal neuronal activation in two neurochemically distinct compartments, with striosomal neuronal activation exceeding that of the striatal matrix during stereotypy. Both the stereotypic response to METH and the associated predominant activation of neurons located in striosomes require D2-receptor expression. These studies indicate a differential requirement for D1- and D2-like receptor activation in mediating the effects of METH on cognitive and motor function(7). Other indicated that the 'D3 Dopamine Receptor Hypothesis' suggests D3 antagonists could prevent sensitization, and may interrupt the development of psychosis when administered during the prodromal phase of psychotic illness(7a).




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Sources
(7) http://www.ncbi.nlm.nih.gov/pubmed/15542707
(7a) http://www.ncbi.nlm.nih.gov/pubmed/11566480

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