PMID- 36943006 OWN - NLM STAT- MEDLINE DCOM- 20230605 LR - 20230605 IS - 1475-097X (Electronic) IS - 1475-0961 (Linking) VI - 43 IP - 4 DP - 2023 Jul TI - Increasing circulating levels of Tenascin C in response to the Wingate anaerobic test. PG - 271-277 LID - 10.1111/cpf.12816 [doi] AB - AIM: Tenascin 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. METHODS: Thirty-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. RESULTS: After the Wingate test, serum TNC increased on average by 23% [15-33], median [interquartile range]; P(Wilcoxon) < 0.0001. This increase is correlated with peak power output and power drop, but not with VO(2max) . TNC RNA expression is higher in myoblasts and myotubes compared to skeletal muscle tissue. CONCLUSION: TNC 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 VO(2max) 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. CI - (c) 2023 The Authors. Clinical Physiology and Functional Imaging published by John Wiley & Sons Ltd on behalf of Scandinavian Society of Clinical Physiology and Nuclear Medicine. FAU - Ekstrom, Ola AU - Ekstrom O AUID- ORCID: 0000-0002-4857-0892 AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. FAU - Strom, Kristoffer AU - Strom K AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. FAU - Mir, Bilal Ahmad AU - Mir BA AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. FAU - Laurila, Esa AU - Laurila E AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. FAU - Wessman, Ylva AU - Wessman Y AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. FAU - Lehtovirta, Mikko AU - Lehtovirta M AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. AD - Institute for Molecular Medicine Finland (FIMM), Helsinki University, Helsinki, Finland. FAU - Eriksson, Karl-Fredrik AU - Eriksson KF AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. FAU - Hansson, Ola AU - Hansson O AD - Department of Clinical Sciences, Lund University Diabetes Centre, Lund University, Malmo, Sweden. AD - Institute for Molecular Medicine Finland (FIMM), Helsinki University, Helsinki, Finland. LA - eng GR - Crafoordska Stiftelsen/ GR - Diabetesforbundet/ GR - IRC15-0067/Stiftelsen for Strategisk Forskning/ GR - Novo Nordisk Fonden/ GR - Hjelt Foundation/ GR - Knut och Alice Wallenbergs Stiftelse/ GR - Insamlingsstiftelsen Diabetes Wellness Network Sverige/ GR - 2009-1039/Vetenskapsradet/ GR - 2018-02635/Vetenskapsradet/ GR - Direktor Albert Pahlssons Stiftelse/ PT - Journal Article DEP - 20230402 PL - England TA - Clin Physiol Funct Imaging JT - Clinical physiology and functional imaging JID - 101137604 RN - 0 (Tenascin) RN - 0 (Extracellular Matrix Proteins) RN - 63231-63-0 (RNA) SB - IM MH - Male MH - Humans MH - *Tenascin/genetics/metabolism MH - Anaerobiosis MH - *Extracellular Matrix Proteins/metabolism MH - Extracellular Matrix/metabolism MH - RNA/metabolism OTO - NOTNLM OT - TNC OT - Tenascin OT - Wingate OT - exercise response OT - myoblasts OT - myotubes OT - skeletal muscle EDAT- 2023/03/22 06:00 MHDA- 2023/06/05 06:42 CRDT- 2023/03/21 09:23 PHST- 2023/03/07 00:00 [revised] PHST- 2022/03/29 00:00 [received] PHST- 2023/03/09 00:00 [accepted] PHST- 2023/06/05 06:42 [medline] PHST- 2023/03/22 06:00 [pubmed] PHST- 2023/03/21 09:23 [entrez] AID - 10.1111/cpf.12816 [doi] PST - ppublish SO - Clin Physiol Funct Imaging. 2023 Jul;43(4):271-277. doi: 10.1111/cpf.12816. Epub 2023 Apr 2.