Document Detail

Exogenous Hydrogen Sulfide Protects Against Traumatic Hemorrhagic Shock Via Attenuation of Oxidative Stress.
MedLine Citation:
PMID:  21962736     Owner:  NLM     Status:  Publisher    
OBJECTIVE: This study was designed to investigate the protective effects of exogenous hydrogen sulfide (H(2)S) on trauma-hemorrhagic shock (T-H). MATERIALS AND METHODS: Forty-eight male Sprague-Dawley rats were anesthetized, while 32 were subjected to both midline laparotomy and hemorrhagic shock (35-40 mmHg for 90 min) by bleeding them from the femoral artery. One hour later, resuscitation was initiated with Ringer lactate. NaHS (28 μmol/kg) or vehicle alone was administered intraperitoneally at the onset of resuscitation. Two hours later, eight animals from each group were re-anesthetized to determine cardiac function, blood gas concentrations, and hepatic and renal function. Superoxide dismutase activity (SOD), malondialdehyde concentrations (MDA), and the activity of myeloperoxidase (MPO) in the serum were measured and pulmonary wet/dry (W/D) ratio and histopathologic evaluations performed. RESULTS: NaHS resulted in an increase in mean arterial blood pressure, left ventricular pressure and positive (+dP/dt(max)) and negative (-dP/dt(max)) first derivatives of pressure as compared with the vehicle only group. The pH, PaO(2) and base excess (BE) were increased in the NaHS-treated group compared with the vehicle-treated group. Aspartate aminotransferase, alanine aminotransferase, blood urea nitrogen, and serum creatinine were reduced in the NaHS-treated group. NaHS also significantly reduced the high mortality rate at 24 h otherwise caused by T-H. The NaHS-treated group showed a remarkable decrease in MDA and MPO concentrations in plasma and an increase in SOD as compared with the vehicle-treated group. Histopathologic analysis indicated less edema, congestion, inflammatory cell infiltration and necrosis in heart, lung, liver and kidney tissue in NaHS-treated group. CONCLUSIONS: The present study demonstrates that exogenous H(2)S administered at an appropriate dose confers protective effects after T-H and resuscitation, by preventing a decrease in the antioxidant defense system.
Wei Chai; Yan Wang; Jia-Yan Lin; Xu-De Sun; Li-Nong Yao; Yong-Hui Yang; Hui Zhao; Wei Jiang; Chang-Jun Gao; Qian Ding
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-8-9
Journal Detail:
Title:  The Journal of surgical research     Volume:  -     ISSN:  1095-8673     ISO Abbreviation:  -     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-10-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376340     Medline TA:  J Surg Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Department of Anesthesiology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China.
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