Publication Date:
1978-07-21
Description:
Arecholine (4 milligrams), a cholinergic agonist, and choline (10 grams), a precursor of acetylcholine, significantly enhanced serial learning in normal human subjects. The subjects received methscopolamine prior to both arecholine and placebo injections. Conversely, scopolamine (0.5 milligram), a cholinergic antagonist, impaired learning and this impairment was reversed by arecholine and choline and the impairment after scopolamine were inversely proportional to the subject's performance on placebo; that is, "poor" performers were more vulnerable to both the enhancing effect of cholinergic agonist and precursor and the impairment after cholinergic antagonist than "good" performers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sitaram, N -- Weingartner, H -- Gillin, J C -- New York, N.Y. -- Science. 1978 Jul 21;201(4352):274-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/351808" target="_blank"〉PubMed〈/a〉
Keywords:
Acetylcholine/physiology
;
Adult
;
Arecoline/*pharmacology
;
Choline/*pharmacology
;
Clinical Trials as Topic
;
Female
;
Humans
;
Learning/*drug effects/physiology
;
Male
;
Memory/physiology
;
Receptors, Muscarinic/drug effects
;
Scopolamine Hydrobromide/*pharmacology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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