Author:
Baertschi AJ,Ward DG,Gann DS
Abstract
Sinusoidal volume changes (+/- 1 ml) were applied at 1 Hz to the right or left atrium of 25 anesthetized cats. Changes in firing rates of single vagal fibers and in plasma ACTH and cortisol were observed in response to start and stop of atrial pulsation. Decreased activity of right atrial and/or septal B-receptors was associated with increased ACTH. Changes in left atrial B-receptor activity were associated with a change in ACTH only if right atrial/septal receptors or baroreceptors also changed their activity in the same direction. The activity of atrial A-receptors did not change in response to atrial pulsation. A quantitative analysis suggested strongly that right atrial and/or septal B-receptors dominate in the response of ACTH to hemodynamic stimuli. Arterial receptors appear less effective, and left atrial B-receptors appear least effective in the hemodynamic control of ACTH.
Publisher
American Physiological Society
Cited by
47 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献