Abstract：
:Although mitochondrial dysfunction has been implicated in aging, physical function decline, and several age-related diseases, an accessible and affordable measure of mitochondrial health is still lacking. In this study we identified the proteomic signature of muscular mitochondrial oxidative capacity in plasma. In 165 adults, we analyzed the association between concentrations of plasma proteins, measured using the SOMAscan assay, and skeletal muscle maximal oxidative phosphorylation capacity assessed as post-exercise phosphocreatine recovery time constant (τPCr) by phosphorous magnetic resonance spectroscopy. Out of 1301 proteins analyzed, we identified 87 proteins significantly associated with τPCr, adjusting for age, sex, and phosphocreatine depletion. Sixty proteins were positively correlated with better oxidative capacity, while 27 proteins were correlated with poorer capacity. Specific clusters of plasma proteins were enriched in the following pathways: homeostasis of energy metabolism, proteostasis, response to oxidative stress, and inflammation. The generalizability of these findings would benefit from replication in an independent cohort and in longitudinal analyses.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Zampino M,Tanaka T,Ubaida-Mohien C,Fantoni G,Candia J,Semba RD,Ferrucci Ldoi
10.3390/ijms21249540subject
Has Abstractpub_date
2020-12-15 00:00:00issue
24issn
1422-0067pii
ijms21249540journal_volume
21pub_type
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