INDUCIBLE NITRIC-OXIDE SYNTHASE ACTIVITY IN MYOCARDIUM AFTER MYOCARDIAL-INFARCTION IN RABBIT

被引：42

作者：

DUDEK, RR ^{[1
]}

WILDHIRT, S ^{[1
]}

CONFORTO, A ^{[1
]}

PINTO, V ^{[1
]}

SUZUKI, H ^{[1
]}

WINDER, S ^{[1
]}

BING, RJ ^{[1
]}

机构：

[1] CALTECH, DEPT ENVIRONM ENGN, PASADENA, CA 91125 USA

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1994年 / 205卷 / 03期

关键词：

D O I：

10.1006/bbrc.1994.2860

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The activity of nitric oxide synthase (NOS) in infarcted and noninfarcted rabbit myocardium was determined. NOS activity, as measured by conversion of [C-14]arginine to [C-14]citrulline, was significantly higher in the infarcted area of myocardium (22.7 +/- 3.7 fmol/mg as compared to 7.67 +/- 1.0 in noninfarcted area). NOS activity within the area of risk remained on control level. Increased inducible NOS activity was observed on the first postoperative day and persisted for at least 14 days; it declined 3 weeks after infarction, Citrulline formation was inhibited by N-omega-nitro-L-arginine and N-omega-monomethyl-L-arginine The localization of NOS by monoclonal anti-NOS antibody indicates mononuclear cells/macrophages as the likely source of the enzyme. The concentrations of tumor necrosis factor-alpha and interleukin-1 beta were not increased in peripheral blood or myocardium. (C) 1994 Academic Press, Inc.

引用

页码：1671 / 1680

页数：10

共 18 条

[1]

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