PMID- 25376739 OWN - NLM STAT- MEDLINE DCOM- 20150817 LR - 20181113 IS - 1573-4919 (Electronic) IS - 0300-8177 (Linking) VI - 399 IP - 1-2 DP - 2015 Jan TI - Sodium hydrosulfide attenuates hyperhomocysteinemia rat myocardial injury through cardiac mitochondrial protection. PG - 189-200 LID - 10.1007/s11010-014-2245-6 [doi] AB - Hydrogen sulfide (H2S) plays an important role during rat myocardial injury. However, little is known about the role of H2S in hyperhomocysteinemia (HHcy)-induced cardiac dysfunction as well as the underlying mechanisms. In this study, we investigated whether sodium hydrosulfide (NaHS, a H2S donor) influences methionine-induced HHcy rat myocardial injury in intact rat hearts and primary neonatal rat cardiomyocytes. HHcy rats were induced by methionine (2.0 g/kg) and the daily administration of 80 mumol/L NaHS in the HHcy + NaHS treatment group. At the end of 4, 8, and 12 weeks, the ultrastructural alterations and functions of the hearts were observed using transmission electron microscopy and echocardiography system. The percentage of apoptotic cardiomyocytes, the mitochondrial membrane potential, and the production of reactive oxygen species (ROS) were measured. The expressions of cystathionine-gamma-lyase (CSE), Bax and Bcl-2, caspase-3, phospho-endothelial nitric oxide synthase and the mitochondrial NOX4 and cytochrome c were analyzed by Western blotting. The results showed the cardiac dysfunction, the ultrastructural changes, and the apoptotic rate increase in the HHcy rat hearts. In the primary neonatal rat cardiomyocytes of HHcy group, ROS production was increased markedly, whereas the expression of CSE was decreased. However, treatment with NaHS significantly improved the HHcy rat hearts function, the ultrastructural changes, and decreased the levels of ROS in the primary neonatal rat cardiomyocytes administrated with HHcy group. Furthermore, NaHS down-regulated the expression of mitochondrial NOX4 and caspase-3 and Bax and inhibited the release of cytochrome c from mitochondria. In conclusion, H2S is involved in the attenuation of HHcy myocardial injury through the protection of cardiac mitochondria. FAU - Wang, Yuwen AU - Wang Y AD - Department of Clinical Laboratory, The Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, Heilongjiang, China, yuww060424@hotmail.com. FAU - Shi, Sa AU - Shi S FAU - Dong, Shiyun AU - Dong S FAU - Wu, Jichao AU - Wu J FAU - Song, Mowei AU - Song M FAU - Zhong, Xin AU - Zhong X FAU - Liu, Yanhong AU - Liu Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141107 PL - Netherlands TA - Mol Cell Biochem JT - Molecular and cellular biochemistry JID - 0364456 RN - 0 (Cardiotonic Agents) RN - 0 (Reactive Oxygen Species) RN - 0 (Sulfides) RN - FWU2KQ177W (sodium bisulfide) RN - Homocysteinemia SB - IM MH - Animals MH - Apoptosis MH - Cardiotonic Agents/*pharmacology MH - Cells, Cultured MH - Drug Evaluation, Preclinical MH - Heart Diseases/prevention & control MH - Hyperhomocysteinemia/complications/*drug therapy MH - Male MH - Membrane Potential, Mitochondrial/drug effects MH - Mitochondria, Heart/*drug effects/metabolism MH - Myocardium/pathology MH - Myocytes, Cardiac/drug effects/metabolism/physiology MH - Rats, Wistar MH - Reactive Oxygen Species/metabolism MH - Sulfides/*pharmacology EDAT- 2014/11/08 06:00 MHDA- 2015/08/19 06:00 CRDT- 2014/11/08 06:00 PHST- 2014/07/19 00:00 [received] PHST- 2014/10/09 00:00 [accepted] PHST- 2014/11/08 06:00 [entrez] PHST- 2014/11/08 06:00 [pubmed] PHST- 2015/08/19 06:00 [medline] AID - 10.1007/s11010-014-2245-6 [doi] PST - ppublish SO - Mol Cell Biochem. 2015 Jan;399(1-2):189-200. doi: 10.1007/s11010-014-2245-6. Epub 2014 Nov 7.