[大鼠离体肠系膜动脉的肌源性反应：酸中毒及初始血管张力的影响]
[Myogenic reactions of the rat isolated mesenteric artery: effect of acidosis and the primary vessel tone].
作者信息
Iartsev V N, Karachentseva O V, Dvoretskiĭ D P
机构信息
I. P. Pavlov Institute of Physiology of the Russian Acad. Sci., 199034, St. Petersburg, Nab. Makarova, 6, Russia.
出版信息
Ross Fiziol Zh Im I M Sechenova. 2001 Feb;87(2):239-47.
PMID:11296708
Abstract
Stretch of the rat mesenteric artery ring pretreated with noradrenaline evoked a myogenic response consisting of the fast and slow phases which were maximal at about 3.5 and 45.1 s after the stretch, resp. Hypercapnic acidosis inhibited both phases of the response. Role of Ca2+ in origin of the two phases is discussed.
摘要
用去甲肾上腺素预处理的大鼠肠系膜动脉环拉伸诱发了一种肌源性反应，该反应由快速和慢速两个阶段组成，分别在拉伸后约3.5秒和45.1秒时达到最大值。高碳酸血症性酸中毒抑制了该反应的两个阶段。讨论了Ca2+在这两个阶段起源中的作用。
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