期刊
IUBMB LIFE
卷 57, 期 9, 页码 603-606出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15216540500217875
关键词
hydrogen sulfide; nitric oxide; inflammation; vasodilatation
Gases such as nitric oxide (NO) and carbon monoxide (CO) play important roles both in normal physiology and in disease. The toxic effects of hydrogen sulphide (H2S) on living organisms have been recognized for nearly 300 years. In recent years, however, interest has been directed towards H2S as the third gaseous mediator, which has been shown to exhibit potent vasodilator activity both in vitro and in vivo most probably by opening vascular smooth muscle K-ATP channels. Of the two enzymes, cystathionine-gamma-lyase (CSE) and cystathionine-beta-synthetase (CBS), which utilize L-cysteine as substrate to form H2S, CSE is believed to be the key enzyme which forms H 2 S in the cardiovascular system. Recent studies have shown an important role of the vasodilator action of H2S in health and disease.
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