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Lv Z, Chen X, Chen P, Li Q, Guo Z, Lu Q, Ding S. Colchicine prevents ventricular arrhythmias vulnerability in diet-induced obesity rats. Biochem Biophys Res Commun 2022; 610:127-132. [PMID: 35462093 DOI: 10.1016/j.bbrc.2022.03.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 03/22/2022] [Indexed: 11/02/2022]
Abstract
AIMS This study aimed to assess the role of colchicine in ventricular arrhythmias (VAs) induced by high fat diet (HFD)-fed rats. METHODS AND RESULTS Male rats were divided into four groups: CTL, normal diet plus saline; CTC, normal diet plus colchicine; HFD, HFD plus saline; HFC: HFD plus colchicine. Metabolic parameters, ECG parameters, ventricular electrophysiological parameters, ventricular histology, Western blot and RT-qPCR were measured. Compared with the HFD group, colchicine treatment significantly improved metabolic parameters, reduced ventricular fibrosis, increased the expression of Cav1.2, Kv4.2, Nav1.5, and Cx43, reduced CaMKII, p-CaMKII, p-RyR2 (S2808), and p-RyR2 (S2814) expression in LV. Furthermore, colchicine inhibited the inflammatory responses, prolonged ventricular effective refractory period (ERP), reduced corrected QT interval (QTc) and Tpeak-Tend interval, so as to reduce the susceptibility to VAs in obesity rats. CONCLUSIONS Colchicine could mitigate ventricular fibrosis, ventricular electrical remodeling, as well as the expression of ion channels, and inhibit obesity-induced inflammatory responses, which provides a new idea for colchicine to prevent VAs in obese individuals.
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Affiliation(s)
- Zhiyang Lv
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, PR China; Institute of Cardiovascular Diseases, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, 443003, PR China
| | - Xiaodi Chen
- Department of Ultrasound, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, 443003, PR China
| | - Ping Chen
- National Standardized Training Base for Resident, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, 443003, PR China
| | - Qianyuan Li
- Clinical Laboratory, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, 443003, PR China
| | - Zhuli Guo
- Institute of Cardiovascular Diseases, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang, 443003, PR China
| | - Qing Lu
- Department of Cardiology, General Hospital of Central Theater Command, Wuhan Clinical Medicine College of Southern Medical University, Wuhan, 430070, PR China
| | - Shifang Ding
- The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, PR China; Department of Cardiology, General Hospital of Central Theater Command, Wuhan Clinical Medicine College of Southern Medical University, Wuhan, 430070, PR China.
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