Abstract
Long non-coding RNAs (lncRNAs) are the most numerous group of transcripts performing various functions, including the development of cardiovascular pathologies. We investigated the changes in expression of four long non-coding RNAs (H19, TUG1, GAS5, MIAT) under conditions of anoxia-reoxygenation in neonatal rat cardiomyocyte culture and ischemia-reperfusion in adult Wistar rats. A significant decrease in the expression of all four long non-coding RNAs in cell culture under experimental conditions was established. The regime of prolonged anoxia-reoxygenation led to a sharp increase in the expression level of long non-coding RNA MIAT by twice, but compared to normoxia, these changes were not significant. After ischemia-reperfusion in rat myocardium, the content of long non-coding RNA TUG1 increased by 22 times, while the expression of H19 decreased by 3.79 times, and in rat plasma, the expression of long non-coding RNA MIAT increased by 3.79 times. The obtained results allow considering long non-coding RNAs H19 and TUG1 as potential targets in ischemic myocardial injury, and MIAT as a biomarker of cardiovascular pathologies.
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