Hemodynamic and renin responses to (+-)-DOI, a selective 5-HT2 receptor agonist, in conscious rats.
Hemodynamic and renin responses to (+-)-DOI, a selective 5-HT2 receptor agonist, in conscious rats.
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清醒大鼠对 (-)-DOI(一种选择性 5-HT2 受体激动剂)的血流动力学和肾素反应。
DOI:
10.1016/0014-2999(90)90571-m
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发表时间:
1990
影响因子:
5
通讯作者:
Alper,RH
中科院分区:
文献类型:
--
作者:
Alper,RH
The effect of the selective 5-HT2agonist (±)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane HCl (DOI) on arterial pressure (AP), heart rate (HR), renal blood flow (RBF) and plasma renin activity (PRA) was determined in conscious rats. DOI increased AP and PRA, but decreased HR and RBF. All responses to DOI were abolished by central (LY 53857) or peripheral (xylamidine) 5-HT2antagonists. Prazosin did not alter the AP or HR response to DOI. Chlorisondamine abolished the bradycardia but slightly increased the hypertension produced by DOI, while enalapril attenuated the pressor response. No further reduction was produced by the combination of enalapril and prazosin. Propranolol attenuated but did not eliminate the renin response, and blocked the bradycardia elicited by DOI. The data suggest that DOI activates 5-HT2receptors located on vascular smooth muscle and/or the circumventricular organs of the brain to: (1) increase AP and reflexly decrease HR, (2) decrease RBF and (3) increase PRA. The hypertension is mediated by angiotensin II and direct vascular effects whereas the increase in PRA is mediated by an interaction of increased sympathetic nerve activity and decreased renal perfusion pressure.
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影响因子:
7.3
作者:
J. Fozard;G. Mwaluko
通讯作者:
G. Mwaluko
影响因子:
2.9
作者:
C. Fischette;B. Nock;K. Renner
通讯作者:
K. Renner
影响因子:
7.3
作者:
N. Flavahan;T. L. Grant;J. Greig;J. McGrath
通讯作者:
J. McGrath
DOI:
--
发表时间:
1981
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
VandeKar,LD;Wilkinson,CW;Ganong,WF
通讯作者:
Ganong,WF
影响因子:
5
作者:
Robert B. McCall;L. T. Harris
通讯作者:
L. T. Harris