PMID- 25547710 OWN - NLM STAT- MEDLINE DCOM- 20150908 LR - 20181202 IS - 0376-2491 (Print) IS - 0376-2491 (Linking) VI - 94 IP - 38 DP - 2014 Oct 21 TI - [Effects of hydrogen-rich saline on endoplasmic reticulum stress during myocardial ischemia-reperfusion in rats]. PG - 3024-8 AB - OBJECTIVE: To explore the effects of hydrogen-rich saline on endoplasmic reticulum stress during myocardial ischemia-reperfusion (I/R) in rats. METHODS: A total of 150 healthy male Sprague-Dawley rats were selected and then randomly divided into 5 groups of normal control (I), sham operation (II), myocardial ischemia-reperfusion (III), hydrogen-rich saline (IV) and normal saline (V) (n = 30 each). Group I had no treatment. In group II, anterior descending branch was merely exposed but not ligated. Myocardial I/R was induced by an occlusion of anterior descending branch of left coronary artery for 30 min followed by 12 h and 24 h of reperfusion with bimbaum. Hydrogen-rich saline 1 ml/100 g was injected intraperitoneally 5 min before reperfusion in group IV. Normal saline 1 ml/100 g was injected intraperitoneally 5 min before reperfusion in group V. The rats were sacrificed at 12 h and 24 h of reperfusion and heart tissues harvested. The pathological changes of myocardial tissue were detected by hematoxylin & eosin staining. The apoptotic cardiomyocytes of myocardial tissue were tested by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL). And the expressions of GRP78, Caspase-12, Bcl-2 and Bax in myocardial tissue were detected by Western blot. RESULTS: Compared with groups I and II, the numbers of apoptotic cardiomyocytes, the expression of GRP78, Caspase-12 and Bax in myocardial tissue significantly increased and the expression of Bcl-2 in myocardial tissue significantly decreased in groups III, IV and V. Compared with group III and V, the numbers of apoptotic cardiomyocytes, the expression of GRP78, Caspase-12 and Bax in myocardial tissue significantly decreased while the expression of Bcl-2 in myocardial tissue significantly increased in group IV. CONCLUSIONS: Hydrogen-rich saline may decrease cell apoptosis and attenuate myocardial reperfusion injury through inhibiting endoplasmic reticulum stress. The mechanism may be associated with decreasing the expression of GRP78, Caspase-12 and Bax and increasing the expression of Bcl-2 in myocardial tissue. FAU - Zhao, Yue AU - Zhao Y AD - Department of Cardiology, Daqing Oil Field General Hospital, Daqing 163001, China. FAU - Tang, Yulong AU - Tang Y AD - Department of Cardiology, Daqing Oil Field General Hospital, Daqing 163001, China. FAU - Suo, Chuantao AU - Suo C AD - Department of Cardiology, Daqing Oil Field General Hospital, Daqing 163001, China. FAU - Liu, Dayi AU - Liu D AD - Department of Cardiology, Daqing Oil Field General Hospital, Daqing 163001, China. FAU - Li, Shiyang AU - Li S AD - Department of Cardiology, Daqing Oil Field General Hospital, Daqing 163001, China. FAU - Li, Hui AU - Li H AD - Department of Cardiology, Daqing Oil Field General Hospital, Daqing 163001, China. Email: 791685879@qq.com. LA - chi PT - Journal Article PL - China TA - Zhonghua Yi Xue Za Zhi JT - Zhonghua yi xue za zhi JID - 7511141 RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 0 (bcl-2-Associated X Protein) RN - 451W47IQ8X (Sodium Chloride) RN - 7YNJ3PO35Z (Hydrogen) RN - EC 3.4.22.- (Casp12 protein, rat) RN - EC 3.4.22.- (Caspase 12) SB - IM MH - Animals MH - Apoptosis MH - Caspase 12 MH - Endoplasmic Reticulum Stress MH - Hydrogen MH - *Ischemia MH - Male MH - *Myocardial Reperfusion Injury MH - Proto-Oncogene Proteins c-bcl-2 MH - Rats MH - Rats, Sprague-Dawley MH - Sodium Chloride MH - bcl-2-Associated X Protein EDAT- 2014/12/31 06:00 MHDA- 2015/09/09 06:00 CRDT- 2014/12/31 06:00 PHST- 2014/12/31 06:00 [entrez] PHST- 2014/12/31 06:00 [pubmed] PHST- 2015/09/09 06:00 [medline] PST - ppublish SO - Zhonghua Yi Xue Za Zhi. 2014 Oct 21;94(38):3024-8.