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Title: | Osteocalcin signaling in myofibers is necessary and sufficient for optimum adaptation to exercise |
Author: | Mera Nanín, Paula Laue, Kathrin Ferron, Mathieu Confavreux, Cyril Wei, Jianwen Galán-Díez, Marta Lacampagne, Alain Mitchell, Sarah J. Mattison, Julie A. Chen, Yun Bacchetta, Justine Szulc, Pawel Kitsis, Richard N. de Cabo, Rafael Friedman, Richard A. Torsitano, Christopher McGraw, Timothy E. Puchowicz, Michelle Kurland, Irwin Karsenty, Gerard |
Keywords: | Hormones peptídiques Ossificació Glucosa Insulina Exercici Peptide hormones Ossification Glucose Insulin Exercise |
Issue Date: | 14-Jun-2016 |
Publisher: | Cell Press |
Abstract: | Circulating levels of undercarboxylated and bioactive osteocalcin double during aerobic exercise at the time levels of insulin decrease. In contrast, circulating levels of osteocalcin plummet early during adulthood in mice, monkeys, and humans of both genders. Exploring these observations revealed that osteocalcin signaling in myofibers is necessary for adaptation to exercise by favoring uptake and catabolism of glucose and fatty acids, the main nutrients of myofibers. Osteocalcin signaling in myofibers also accounts for most of the exercise-induced release of interleukin-6, a myokine that promotes adaptation to exercise in part by driving the generation of bioactive osteocalcin. We further show that exogenous osteocalcin is sufficient to enhance the exercise capacity of young mice and to restore to 15-month-old mice the exercise capacity of 3-month-old mice. This study uncovers a bone-to-muscle feedforward endocrine axis that favors adaptation to exercise and can reverse the age-induced decline in exercise capacity. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.cmet.2016.05.004 |
It is part of: | Cell Metabolism, 2016, vol. 23, num. 6, p. 1078-1092 |
URI: | http://hdl.handle.net/2445/129467 |
Related resource: | https://doi.org/10.1016/j.cmet.2016.05.004 |
ISSN: | 1550-4131 |
Appears in Collections: | Articles publicats en revistes (Bioquímica i Fisiologia) |
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