Affiliation:
1. Department of Clinical Sciences, Lund University Diabetes Centre Lund University Malmö Sweden
2. Institute for Molecular Medicine Finland (FIMM) Helsinki University Helsinki Finland
Abstract
AbstractAimTenascin C (TNC) is a large extracellular matrix glycoprotein. It is involved in development and upregulated both during tissue repair and in several pathological conditions, including cardiovascular disease. Extracellular matrix proteins play a role in promoting exercise responses, leading to adaptation, regeneration, and repair. The main goal of this study was to investigate whether a short anaerobic effort leads to increased levels of TNC in serum.MethodsThirty‐nine healthy men performed a Wingate test followed by a muscle biopsy. Myoblasts were isolated from the muscle biopsies and differentiated to myotubes ex vivo. TNC RNA was quantified in the biopsies, myotubes and myoblasts using RNA sequencing. Blood samples were drawn before and 5 min after the Wingate test. Serum TNC levels were measured using enzyme‐linked immunosorbent assay.ResultsAfter the Wingate test, serum TNC increased on average by 23% [15–33], median [interquartile range]; PWilcoxon < 0.0001. This increase is correlated with peak power output and power drop, but not with VO2max. TNC RNA expression is higher in myoblasts and myotubes compared to skeletal muscle tissue.ConclusionTNC is secreted systemically as a response to the Wingate anaerobic test in healthy males. The response was positively correlated with peak power and power drop, but not with VO2max which implicates a relation to mechanical strain and/or blood flow. With higher expression in undifferentiated myoblast cells than muscle tissue, it is likely that TNC plays a role in muscle tissue remodelling in humans. Our findings open for research on how TNC contributes to exercise adaptation.
Funder
Crafoordska Stiftelsen
Diabetesförbundet
Novo Nordisk Fonden
Knut och Alice Wallenbergs Stiftelse
Insamlingsstiftelsen Diabetes Wellness Network Sverige
Vetenskapsrådet
Subject
Physiology (medical),General Medicine,Physiology,General Medicine
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献