Cold water immersion in recovery following a single bout resistance exercise suppresses mechanisms of miRNA nuclear export and maturation.

Autor: D'Souza RF; Liggins Institute, The University of Auckland, Auckland, New Zealand.; Discipline of Nutrition, The University of Auckland, Auckland, New Zealand.; Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand., Figueiredo VC; Liggins Institute, The University of Auckland, Auckland, New Zealand.; Department of Biological Sciences, Oakland University, Rochester, Michigan, USA., Markworth JF; Liggins Institute, The University of Auckland, Auckland, New Zealand.; Department of Animal Science, Purdue University, West Lafayette, Indiana, USA., Zeng N; Liggins Institute, The University of Auckland, Auckland, New Zealand.; Department of Physiology, The University of Auckland, Auckland, New Zealand., Hedges CP; Discipline of Nutrition, The University of Auckland, Auckland, New Zealand.; Maurice Wilkins Centre for Molecular Biodiscovery, The University of Auckland, Auckland, New Zealand., Roberts LA; School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Queensland, Australia.; Sports Performance Innovation and Knowledge Excellence, Queensland Academy of Sport, Brisbane, Queensland, Australia.; School of Health Sciences and Social Work, Griffith University, Gold Coast, Queensland, Australia., Raastad T; Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway., Coombes JS; School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, Queensland, Australia., Peake JM; Sports Performance Innovation and Knowledge Excellence, Queensland Academy of Sport, Brisbane, Queensland, Australia.; School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia., Mitchell CJ; Liggins Institute, The University of Auckland, Auckland, New Zealand.; School of Kinesiology, University of British Colombia, Vancouver, British Columbia, Canada., Cameron-Smith D; Liggins Institute, The University of Auckland, Auckland, New Zealand.; College of Engineering, Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia.
Jazyk: angličtina
Zdroj: Physiological reports [Physiol Rep] 2023 Aug; Vol. 11 (15), pp. e15784.
DOI: 10.14814/phy2.15784
Abstrakt: Cold water immersion (CWI) following intense exercise is a common athletic recovery practice. However, CWI impacts muscle adaptations to exercise training, with attenuated muscle hypertrophy and increased angiogenesis. Tissue temperature modulates the abundance of specific miRNA species and thus CWI may affect muscle adaptations via modulating miRNA expression following a bout of exercise. The current study focused on the regulatory mechanisms involved in cleavage and nuclear export of mature miRNA, including DROSHA, EXPORTIN-5, and DICER. Muscle biopsies were obtained from the vastus lateralis of young males (n = 9) at rest and at 2, 4, and 48 h of recovery from an acute bout of resistance exercise, followed by either 10 min of active recovery (ACT) at ambient temperature or CWI at 10°C. The abundance of key miRNA species in the regulation of intracellular anabolic signaling (miR-1 and miR-133a) and angiogenesis (miR-15a and miR-126) were measured, along with several gene targets implicated in satellite cell dynamics (NCAM and PAX7) and angiogenesis (VEGF and SPRED-1). When compared to ACT, CWI suppressed mRNA expression of DROSHA (24 h p = 0.025 and 48 h p = 0.017), EXPORTIN-5 (24 h p = 0.008), and DICER (24 h p = 0.0034). Of the analyzed miRNA species, miR-133a (24 h p < 0.001 and 48 h p = 0.007) and miR-126 (24 h p < 0.001 and 48 h p < 0.001) remained elevated at 24 h post-exercise in the CWI trial only. Potential gene targets of these miRNA, however, did not differ between trials. CWI may therefore impact miRNA abundance in skeletal muscle, although the precise physiological relevance needs further investigation.
(© 2023 The Authors. Physiological Reports published by Wiley Periodicals LLC on behalf of The Physiological Society and the American Physiological Society.)
Databáze: MEDLINE
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