acetylcholine
The Columbia Encyclopedia, Sixth Edition | Date: 2008
acetylcholine , a small organic molecule liberated at nerve endings as a neurotransmitter . It is particularly important in the stimulation of muscle tissue. The transmission of an impulse to the end of the nerve causes it to release neurotransmitter molecules onto the surface of the next cell, stimulating it. After such release, the acetylcholine is quickly broken into acetate and choline, which pass back to the first cell to be recycled into acetylcholine again. The poison curare acts by blocking the transmission of acetylcholine. Some nerve gases operate by preventing the breakdown of acetylcholine causing continual stimulation of the receptor cells, which leads to intense spasms of the muscles, including the heart. Acetylcholine is often abbreviated as Ach. See nervous system .
Author not available, ACETYLCHOLINE.,
The Columbia Encyclopedia, Sixth Edition 2008
The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press
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; SUMMARY The goals of this in vitro study were to investigate effects of etomidate on endothelium-dependent relaxation induced by acetylcholine in rat aorta, and to elucidate the associated cellular mechanism. In endothelium-intact rings precontracted with phenylephrine 10^sup -6^ M, dose-response
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Early trials of Alzheimer drug positive. (tetrahydroaminoacridine)
Science News; 11/15/1986; Silberner, HJoanne; 346 words
; ... accompanying editorial. Kenneth L. Davis of Mt. Sinai Medical Center in New York City, one of the authors of the editorial, told SCIENCE NEWS that other laboratories, including his own, have had some success with drug treatments aimed at maintaining the level of acetylcholine ...
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Acetylcholine and serotonin induce larval metamorphosis of the Japanese short-neck clam Ruditapes philippinarum.
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