内脏神经刺激对青蛙胃肠道交感神经节后末梢肾上腺素和去甲肾上腺素释放的影响。
Effect of splanchnic nerve stimulation on epinephrine and norepinephrine release from gastrointestinal sympathetic postganglionic endings in the frog.
作者信息
Matsui H
机构信息
Department of Physiology, Nagasaki University School of Medicine, Japan.
出版信息
Jpn J Physiol. 1992;42(1):147-50. doi: 10.2170/jjphysiol.42.147.
Gastrointestinal vascular perfusates in bullfrogs before and after splanchnic nerve stimulation were collected and analyzed for epinephrine and norepinephrine. Catecholamine in the perfusate before stimulation was predominantly epinephrine. Upon stimulation a marked increase in epinephrine release without any significant change in norepinephrine release was observed in experiments at 8-10 degrees C as well as 16-21 degrees C, showing that in frogs epinephrine is the sympathetic neurotransmitter and that the release of epinephrine is not affected by low temperatures.
收集牛蛙在刺激内脏神经前后的胃肠血管灌注液，分析其中的肾上腺素和去甲肾上腺素。刺激前灌注液中的儿茶酚胺主要是肾上腺素。在8 - 10摄氏度以及16 - 21摄氏度的实验中，刺激后观察到肾上腺素释放显著增加，而去甲肾上腺素释放无显著变化，这表明在青蛙中肾上腺素是交感神经递质，且肾上腺素的释放不受低温影响。
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