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- W3209576329 abstract "Ghrelin is an endogenous peptide with potential protective effects on ischemic heart.Synthetic ghrelin was administered (100 μg·kg-1 subcutaneous injection, twice daily) for 4 weeks in a rat model of myocardial infarction (MI) with coronary artery occlusion. At the 5th week, electrocardiogram, monophasic action potentials and autonomic nerve function were evaluated. Cardiac tyrosine hydroxylase (TH) was determined by immunofluorescence staining.MI significantly increased sympathetic nerve activity (SNA) and ventricular arrhythmias, and prolonged APD dispersion and APD alternans (p < 0.01). Ghrelin treatment significantly increased ventricular fibrillation threshold (VFT), shortened APD dispersion and APD alternans, inhibited SNA and promoted vagus nerve activities (p < 0.01). Ghrelin also markedly reversed abnormal expression of TH in the peri-infarcted area of the heart (p < 0.01).Ghrelin provides a sustained electrophysiological protection by the increase of VFT and improvement of APD dispersion and APD alternans. The mechanism may be related to the regulation of autonomic nerve and sympathetic nerve remodeling. Thus, ghrelin represents a novel drug to prevent ventricular arrhythmia in ischemic heart disease." @default.
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- W3209576329 date "2021-10-29" @default.
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- W3209576329 title "Impact of Ghrelin on Ventricular Arrhythmia and Related Mechanism After Myocardial Infarction" @default.
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- W3209576329 doi "https://doi.org/10.1159/000519330" @default.
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