期刊
AMINO ACIDS
卷 41, 期 1, 页码 113-121出版社
SPRINGER
DOI: 10.1007/s00726-010-0510-x
关键词
H(2)S; Cystathionine beta-synthase; Cystathionine gamma-lyase; 3-Mercaptopyruvate sulfurtransferase; Bound sulfane sulfur; Neuromodulator; Neuroprotectant; Cardioprotectant; Smooth muscle relaxant; EDRF
资金
- National Institute of Neuroscience
- Grants-in-Aid for Scientific Research [23659089] Funding Source: KAKEN
Hydrogen sulfide (H(2)S), which is a well-known toxic gas, has been recognized as a signal molecule as well as a cytoprotectant. It is produced by three enzymes, cystathionine beta-synthase, cystathionine gamma-lyase and 3-mercaptopyruvate sulfurtransferase along with cysteine aminotransferase. In addition to an immediate release of H(2)S from producing enzymes, it can be stored as bound sulfane sulfur, which may release H(2)S in response to physiological stimuli. As a signal molecule, it modulates neuronal transmission, relaxes smooth muscle, regulates release of insulin and is involved in inflammation. Because of its reputation as a toxic gas, the function as a cytoprotectant has been overlooked: the nervous system and cardiovascular system are protected from oxidative stress. In this review, enzymatic production, release mechanism and functions of H(2)S are focused on.
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