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- W52893799 abstract "The identification of microRNAs (miRNAs) has established new mechanisms that control skeletal muscle adaptation to exercise. The present study investigated the mRNA regulation of components of the miRNA biogenesis pathway (Drosha, Dicer and Exportin-5), muscle enriched miRNAs, (miR-1, -133a, -133b and -206), and several miRNAs dysregulated in muscle myopathies (miR-9, -23, -29, -31 and -181). Measurements were made in muscle biopsies from nine healthy untrained males at rest, 3 h following an acute bout of moderate-intensity endurance cycling and following 10 days of endurance training. Bioinformatics analysis was used to predict potential miRNA targets. In the 3 h period following the acute exercise bout, Drosha, Dicer and Exportin-5, as well as miR-1, -133a, -133-b and -181a were all increased. In contrast miR-9, -23a, -23b and -31 were decreased. Short-term training increased miR-1 and -29b, while miR-31 remained decreased. Negative correlations were observed between miR-9 and HDAC4 protein (r=-0.71; P=0.04), miR-31 and HDAC4 protein (r=-0.87; P=0.026) and miR-31 and NRF1 protein (r=-0.77; P=0.01) 3 h following exercise. miR-31 binding to the HDAC4 and NRF1 3 untranslated region (UTR) reduced luciferase reporter activity. Exercise rapidly and transiently regulates several miRNA species in muscle. Several of these miRNAs may be involved in the regulation of skeletal muscle regeneration, gene transcription and mitochondrial biogenesis. Identifying endurance exercise-mediated stress signals regulating skeletal muscle miRNAs, as well as validating their targets and regulatory pathways post exercise, will advance our understanding of their potential role/s in human health." @default.
- W52893799 created "2016-06-24" @default.
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- W52893799 date "2013-07-23" @default.
- W52893799 modified "2023-10-01" @default.
- W52893799 title "Regulation of miRNAs in human skeletal muscle following acute endurance exercise and short-term endurance training" @default.
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- W52893799 doi "https://doi.org/10.1113/jphysiol.2013.255695" @default.
- W52893799 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3784204" @default.
- W52893799 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23798494" @default.
- W52893799 hasPublicationYear "2013" @default.
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