PMID- 30529771 OWN - NLM STAT- MEDLINE DCOM- 20190418 LR - 20190418 IS - 1950-6007 (Electronic) IS - 0753-3322 (Linking) VI - 110 DP - 2019 Feb TI - Tropisetron inhibits sepsis by repressing hyper-inflammation and regulating the cardiac action potential in rat models. PG - 380-388 LID - S0753-3322(18)35470-2 [pii] LID - 10.1016/j.biopha.2018.11.142 [doi] AB - OBJECTIVE: The objective of the present investigation was to explore the possible effect of the 5-HT3 receptor antagonist tropisetron on the expression levels of the inflammatory factors interleukin 6 (IL-6), creatine kinase isoenzyme (CK-MB), soluble growth stimulating gene 2 protein (sST2) and immunoglobulin E (IgE), as well as the cardiac action potential in septic rats. METHODS: The cecal ligation and perforation (CLP) method was utilized to construct abdominal infarction in rats. A total of 68 male adult Sprague Dawley rats were used, including 40 for assessing survival and 28 for detecting the expression levels of IL-6 and IgE, myocardial injury, cardiac dysfunction and the cardiac action potential. These 28 rats were divided into the sham (6 rats), sham + Tropisetron (6 rats), CLP (8 rats) and CLP + Tropisetron (8 rats) groups. Twenty-four hours after establishment of the sepsis rat model, immunohistochemistry was used to analyze 5-HT3 receptor protein expression, and enzyme-linked immunosorbent assay (ELISA) was employed to monitor the serum levels of IL-6, CKMB, sST2 and IgE. Furthermore, the structure of the myocardium in various groups was examined by H&E staining. RESULTS: The levels of IL-6, CK-MB, sST2 and IgE in the sepsis group were significantly higher than those of the sham group (P < 0.01). Furthermore, the heart rate in the sepsis group was lower than that of the sham group (P < 0.01), and the time of atrial ventricular action potential in the sepsis group was longer than that of the sham group (P < 0.05). In addition, immunohistochemical analyses showed that the area, intensity and index of 5-HT3 receptor in the sepsis group were significantly lower than those of the sham group (P < 0.01). Importantly, the 5-HT3 receptor antagonist Tropisetron exhibited significant inhibitory effects IL-6, CK-MB, sST2 and IgE expression levels, and inductive effects on atrial ventricular action potential in the sepsis group. CONCLUSIONS: Sepsis leads to systemic inflammatory reaction, resulting in myocardial injury, structural changes and immune imbalance. The inhibitory effect of tropisetron on inflammation, and the regulatory inflammatory disorder by the efferent vagus nerve may be one of the important mechanisms leading to cardiac electrophysiological changes in sepsis. CI - Copyright (c) 2018. Published by Elsevier Masson SAS. FAU - Liu, Zhengjiang AU - Liu Z AD - Department of Cardiology, the Six Affiliated Hospital of Guangzhou Medical University/ Qingyuan People's Hospital, Qingyuan 511500, China. Electronic address: 29542006j@sina.com. FAU - Zeng, Zhiheng AU - Zeng Z AD - Department of Cardiology, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China. FAU - Wu, Changdong AU - Wu C AD - NO.1 Deppartment of ICU, the People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi 830000, China. FAU - Liu, Hua AU - Liu H AD - Department of Cardiology, the Six Affiliated Hospital of Guangzhou Medical University/ Qingyuan People's Hospital, Qingyuan 511500, China. LA - eng PT - Journal Article DEP - 20181204 PL - France TA - Biomed Pharmacother JT - Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie JID - 8213295 RN - 0 (Inflammation Mediators) RN - 0 (Serotonin 5-HT3 Receptor Antagonists) RN - 6I819NIK1W (Tropisetron) SB - IM MH - Action Potentials/*drug effects/physiology MH - Animals MH - Disease Models, Animal MH - Heart/*drug effects/physiology MH - Inflammation/drug therapy/metabolism MH - Inflammation Mediators/*antagonists & inhibitors/metabolism MH - Isolated Heart Preparation/methods MH - Male MH - Rats MH - Rats, Sprague-Dawley MH - Sepsis/*drug therapy/metabolism MH - Serotonin 5-HT3 Receptor Antagonists/pharmacology/*therapeutic use MH - Tropisetron/pharmacology/*therapeutic use OTO - NOTNLM OT - 5-HT3 OT - Cardiac electrophysiology OT - IL-6 OT - IgE OT - Sepsis OT - sST2 EDAT- 2018/12/12 06:00 MHDA- 2019/04/19 06:00 CRDT- 2018/12/12 06:00 PHST- 2018/08/07 00:00 [received] PHST- 2018/11/22 00:00 [revised] PHST- 2018/11/28 00:00 [accepted] PHST- 2018/12/12 06:00 [pubmed] PHST- 2019/04/19 06:00 [medline] PHST- 2018/12/12 06:00 [entrez] AID - S0753-3322(18)35470-2 [pii] AID - 10.1016/j.biopha.2018.11.142 [doi] PST - ppublish SO - Biomed Pharmacother. 2019 Feb;110:380-388. doi: 10.1016/j.biopha.2018.11.142. Epub 2018 Dec 4.