PMID- 12852811 OWN - NLM STAT- MEDLINE DCOM- 20121211 LR - 20030710 IS - 1003-0603 (Print) IS - 1003-0603 (Linking) VI - 15 IP - 1 DP - 2003 Jan TI - [Effects of efferent vagus nerve excitation on inflammatory response in heart tissue in rats with endotoxemia]. PG - 26-8 AB - OBJECTIVE: To study the effects of electrical stimulation of efferent vagus nerve on the inflammatory response in heart tissue in rats with endotoxemia. METHODS: Two hundred and ten Wistar rats were randomly divided into seven groups. Animals were subjected to bilateral cervical vagotomy, or a comparable sham surgical procedure in which the vagus nerves were isolated but not transected. The distal end of a vagus nerve trunk was placed across bipolar electrodes connected to a stimulation module and controlled by an acquisition system. Stimuli with constant voltage (5 V, 2 ms, 1 Hz) were applied to the nerve for 20 minutes immediately after administration of lipopolysaccharide (LPS, 10 mg/kg, E coli O111: B4, Sigma), and then were repeated 2 times after each of 10 minutes interval. Blood and tissue samples of these rats were collected at 1, 1.5 and 2 hours after LPS administration in all groups. Tumor necrosis factor-alpha (TNF-alpha) and myeloperoxidase (MPO) in heart tissue and serum MB isoenzyme of creatine kinase(CK-MB) were determined. RESULTS: The electrical stimulation of the efferent vagus nerve significantly decreased the contents of TNF-alpha and MPO in heart tissue and CK-MB in serum, and alleviated myocardial inflammation in heart tissue at all time points, especially at 1.5 hours after endotoxin challenge. CONCLUSION: The results suggested that excitation of the efferent vagus nerve can significantly alleviate the inflammatory response in the heart tissue, thus it might produce a potential protective effect on the heart during endotoxemia in rats. FAU - Shi, De-guang AU - Shi DG AD - Burn Institute, 304th Hospital of People's Liberation Army, Beijing 100037, China. FAU - Hu, Sen AU - Hu S FAU - Jiang, Xiao-guo AU - Jiang XG FAU - Sun, Dan AU - Sun D FAU - Jin, Hua AU - Jin H FAU - Li, Jun-you AU - Li JY FAU - Liu, Qi-lin AU - Liu QL FAU - Sheng, Zhi-yong AU - Sheng ZY LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhongguo Wei Zhong Bing Ji Jiu Yi Xue JT - Zhongguo wei zhong bing ji jiu yi xue = Chinese critical care medicine = Zhongguo weizhongbing jijiuyixue JID - 9887521 RN - 0 (Lipopolysaccharides) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Animals MH - Electric Stimulation MH - Endotoxemia/*pathology MH - *Inflammation MH - Lipopolysaccharides MH - Male MH - Myocardium/*pathology MH - Rats MH - Rats, Wistar MH - Tumor Necrosis Factor-alpha/metabolism MH - Vagus Nerve/*physiology EDAT- 2003/07/11 05:00 MHDA- 2012/12/12 06:00 CRDT- 2003/07/11 05:00 PHST- 2003/07/11 05:00 [pubmed] PHST- 2012/12/12 06:00 [medline] PHST- 2003/07/11 05:00 [entrez] PST - ppublish SO - Zhongguo Wei Zhong Bing Ji Jiu Yi Xue. 2003 Jan;15(1):26-8.