FUNCTIONAL-SIGNIFICANCE OF ANGIOTENSIN RECEPTORS IN HUMAN MYOCARDIUM - SIGNIFICANT DIFFERENCES BETWEEN ATRIAL AND VENTRICULAR MYOCARDIUM

被引：19
|
作者：
HOLUBARSCH, C [1 ]
SCHMIDTSCHWEDA, S [1 ]
KNORR, A [1 ]
DUIS, J [1 ]
PIESKE, B [1 ]
RUF, T [1 ]
FASOL, R [1 ]
HASENFUSS, G [1 ]
JUST, H [1 ]
机构：
[1] UNIV FREIBURG,DEPT CARDIOVASC SURG,D-79106 FREIBURG,GERMANY
来源：
EUROPEAN HEART JOURNAL | 1994年 / 15卷
关键词：
ANGIOTENSIN; MYOCARDIUM; INOTROPISM; ANGIOTENSIN CONVERTING ENZYME; ANGIOTENSIN RECEPTOR SUBTYPES;
D O I：
10.1093/eurheartj/15.suppl_D.88
中图分类号：
R5 [内科学];
学科分类号：
1002 ; 100201 ;
摘要：
We studied the effects of angiotensin (Ang) I and II in a variety of isolated human cardiac tissues contracting under physiological conditions (37 degrees C, 60 beats.min(-1)). Ang I and II consistently increased the peak developed force of human atrial muscles by 30-40%, an effect that was completely blocked by 10(-6) M saralasine, but not by the combination of prazosin and propranolol. However, neither Ang I or II had significant inotropic effects in right and left ventricular human preparations. We were also able to demonstrate that the positive inotropic effect of Ang II in human right atrial tissue is mediated by the ATI receptor subtype but not the AT(2) receptor subtype.
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页码：88 / 91
页数：4
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