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TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage

Unaccustomed strenuous exercise can lead to muscle strength loss, inflammation and delayed-onset muscle soreness, which may be influenced by genetic variation. We investigated if a missense single nucleotide polymorphism (A>G, rs2275950) within the TRIM63 gene (encoding MuRF-1 and potentially aff...

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Autores principales: Baumert, P., Lake, M. J., Drust, B., Stewart, C. E., Erskine, R. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Physiological Society 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5899231/
https://www.ncbi.nlm.nih.gov/pubmed/29212849
http://dx.doi.org/10.1152/physiolgenomics.00103.2017
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author Baumert, P.
Lake, M. J.
Drust, B.
Stewart, C. E.
Erskine, R. M.
author_facet Baumert, P.
Lake, M. J.
Drust, B.
Stewart, C. E.
Erskine, R. M.
author_sort Baumert, P.
collection PubMed
description Unaccustomed strenuous exercise can lead to muscle strength loss, inflammation and delayed-onset muscle soreness, which may be influenced by genetic variation. We investigated if a missense single nucleotide polymorphism (A>G, rs2275950) within the TRIM63 gene (encoding MuRF-1 and potentially affecting titin mechanical properties) was associated with the variable response to unaccustomed eccentric exercise. Sixty-five untrained, healthy participants (genotyped for rs2275950: AA, AG, and GG) performed 120 maximal eccentric knee extensions (ECC) to induce muscle damage. Isometric and isokinetic maximal voluntary knee extension contractions (MVCs) and muscle soreness were assessed before, immediately after, and 48 h after ECC. AA homozygotes were consistently stronger [baseline isometric MVC: 3.23 ± 0.92 Nm/kg (AA) vs. 2.09 ± 0.67 Nm/kg (GG); P = 0.006] and demonstrated less muscle soreness over time (P = 0.022) compared with GG homozygotes. This may be explained by greater titin stiffness in AA homozygotes, leading to intrinsically stronger muscle fibers that are more resistant to eccentric damaging contractions.
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spelling pubmed-58992312018-04-17 TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage Baumert, P. Lake, M. J. Drust, B. Stewart, C. E. Erskine, R. M. Physiol Genomics PG SNPs Unaccustomed strenuous exercise can lead to muscle strength loss, inflammation and delayed-onset muscle soreness, which may be influenced by genetic variation. We investigated if a missense single nucleotide polymorphism (A>G, rs2275950) within the TRIM63 gene (encoding MuRF-1 and potentially affecting titin mechanical properties) was associated with the variable response to unaccustomed eccentric exercise. Sixty-five untrained, healthy participants (genotyped for rs2275950: AA, AG, and GG) performed 120 maximal eccentric knee extensions (ECC) to induce muscle damage. Isometric and isokinetic maximal voluntary knee extension contractions (MVCs) and muscle soreness were assessed before, immediately after, and 48 h after ECC. AA homozygotes were consistently stronger [baseline isometric MVC: 3.23 ± 0.92 Nm/kg (AA) vs. 2.09 ± 0.67 Nm/kg (GG); P = 0.006] and demonstrated less muscle soreness over time (P = 0.022) compared with GG homozygotes. This may be explained by greater titin stiffness in AA homozygotes, leading to intrinsically stronger muscle fibers that are more resistant to eccentric damaging contractions. American Physiological Society 2018-03-01 2017-12-06 /pmc/articles/PMC5899231/ /pubmed/29212849 http://dx.doi.org/10.1152/physiolgenomics.00103.2017 Text en Copyright © 2018 the American Physiological Society http://creativecommons.org/licenses/by/4.0/deed.en_US Licensed under Creative Commons Attribution CC-BY 4.0 (http://creativecommons.org/licenses/by/4.0/deed.en_US) : © the American Physiological Society.
spellingShingle PG SNPs
Baumert, P.
Lake, M. J.
Drust, B.
Stewart, C. E.
Erskine, R. M.
TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage
title TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage
title_full TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage
title_fullStr TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage
title_full_unstemmed TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage
title_short TRIM63 (MuRF-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage
title_sort trim63 (murf-1) gene polymorphism is associated with biomarkers of exercise-induced muscle damage
topic PG SNPs
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5899231/
https://www.ncbi.nlm.nih.gov/pubmed/29212849
http://dx.doi.org/10.1152/physiolgenomics.00103.2017
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