Academic Journal
Resting skeletal muscle PNPLA2 (ATGL) and CPT1B are associated with peak fat oxidation rates in men and women but do not explain observed sex differences
| العنوان: | Resting skeletal muscle PNPLA2 (ATGL) and CPT1B are associated with peak fat oxidation rates in men and women but do not explain observed sex differences |
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| المؤلفون: | Chrzanowski‐Smith, Oliver J., Edinburgh, Robert M., Smith, Eleanor, Thomas, Mark P., Walhin, Jean‐Philippe, Koumanov, Francoise, Williams, Sean, Betts, James A., Gonzalez, Javier T. |
| المصدر: | Experimental Physiology ; volume 106, issue 5, page 1208-1223 ; ISSN 0958-0670 1469-445X |
| بيانات النشر: | Wiley |
| سنة النشر: | 2021 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | New Findings What is the central question of this study? What is the relationship between proteins in skeletal muscle and adipose tissue determined at rest and at peak rates of fat oxidation in men and women? What is the main finding and its importance? The resting contents of proteins in skeletal muscle involved in triglyceride hydrolysis and mitochondrial lipid transport were more strongly associated with peak fat oxidation rates than proteins related to lipid transport or hydrolysis in adipose tissue. Although females displayed higher relative rates of fat oxidation than males, this was not explained by the proteins measured in this study, suggesting that other factors determine sex differences in fat metabolism. Abstract We explored key proteins involved in fat metabolism that might be associated with peak fat oxidation (PFO) and account for sexual dimorphism in fuel metabolism during exercise. Thirty‐six healthy adults [15 women; 40 ± 11 years of age; peak oxygen consumption 42.5 ± 9.5 ml (kg body mass) –1 min –1 ; mean ± SD] completed two exercise tests to determine PFO via indirect calorimetry. Resting adipose tissue and/or skeletal muscle biopsies were obtained to determine the adipose tissue protein content of PLIN1, ABHD5 (CGI‐58), LIPE (HSL), PNPLA2 (ATGL), ACSL1, CPT1B and oestrogen receptor α (ERα) and the skeletal muscle protein content of FABP 3 (FABPpm), PNPLA2 (ATGL), ACSL1, CTP1B and ESR1 (ERα). Moderate strength correlations were found between PFO [in milligrams per kilogram of fat‐free mass (FFM) per minute] and the protein content of PNPLA2 (ATGL) [ r s = 0.41 (0.03–0.68), P < 0.05] and CPT1B [ r s = 0.45 (0.09–0.71), P < 0.05] in skeletal muscle. No other statistically significant bivariate correlations were found consistently. Females had a greater relative PFO than males [7.1 ± 1.9 vs. 4.5 ± 1.3 and 7.3 ± 1.7 vs. 4.8 ± 1.2 mg (kg FFM) –1 min –1 in the adipose tissue ( n = 14) and skeletal muscle ( n = 12) subgroups, respectively ( P < 0.05)]. No statistically significant sex ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1113/ep089431 |
| DOI: | 10.1113/EP089431 |
| الاتاحة: | http://dx.doi.org/10.1113/ep089431 https://onlinelibrary.wiley.com/doi/pdf/10.1113/EP089431 https://onlinelibrary.wiley.com/doi/full-xml/10.1113/EP089431 https://physoc.onlinelibrary.wiley.com/doi/pdf/10.1113/EP089431 |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.11FEC1D9 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1113/ep089431 |
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