›› 2018, Vol. 45 ›› Issue (12): 3402-3407.doi: 10.16431/j.cnki.1671-7236.2018.12.012

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Generation of H2S and Its Role in Apoptosis and Inflammatory Response

ZHANG Chengyu, WANG Yueying, XU Chunmei, ZHU Heshui, ZHONG Kai, LI Heping   

  1. Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture, Henan Agricultural University, Zhengzhou 450046, China
  • Received:2018-05-29 Online:2018-12-20 Published:2018-12-21

Abstract:

H2S is a colorless and odorous gas,it is not only a toxic and harmful substance in livestock houses,but also is the third gas signal molecule after NO and CO.H2S can be produced through decompositing and reducting of sulfur-containing organic compounds and sulfates by Salmonella,Helicobacter pylori,etc.in the gastrointestinal tract,and also through catalyzing sulfur-containing amino acid such as L-cysteine by cystathionine-β-synthase (CBS),cystathionine-γ-lyase (CSE),cysteine transferase (CAT) and 3-mercapto-pyruvate thiotransferase (3-MST).H2S has a variety of physiological and pathological effects.It can inhibit mitochondrial respiration and blocks apoptosis through blocking cytochrome C (at high content),while also down-regulates anti-apoptotic genes such as BCL-2 and NFB to promote apoptosis.It can inhibit apoptosis by regulating Caspase3 (at low content),and also can play a thiolation reaction with NF-κB p65 to promote the expression of downstream anti-apoptotic genes and play an anti-apoptotic effect.High concentration of H2S could up-regulate the expression of NFB,P38 and ERKE1/2 genes to promote inflammatory responses,low concentrations of H2S could exert anti-inflammatory effects through inhibiting NF-κB signaling pathway.Summarizing the formation of H2S gas and its dual roles in apoptosis and inflammatory response,this paper provides a reference for the understanding of the physiopathological mechanism of H2S in the process of disease development.

Key words: H2S; generation; cell apoptosis; inflammatory reaction

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