We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Skeletal muscle interleukin-6 regulates metabolic factors in iWAT during HFD and exercise training.
- Authors
Knudsen, Jakob G; Bertholdt, Laerke; Joensen, Ella; Lassen, Signe B; Hidalgo, Juan; Pilegaard, Henriette
- Abstract
<bold>Objective: </bold>To investigate the role of skeletal muscle (SkM) interleukin (IL)-6 in the regulation of adipose tissue metabolism.<bold>Methods: </bold>Muscle-specific IL-6 knockout (IL-6 MKO) and IL-6(loxP/loxP) (Floxed) mice were subjected to standard rodent diet (Chow), high-fat diet (HFD), or HFD in combination with exercise training (HFD ExTr) for 16 weeks.<bold>Results: </bold>Total fat mass increased (P < 0.05) in both genotypes with HFD. However, HFD IL-6 MKO mice had lower (P < 0.05) inguinal adipose tissue (iWAT) mass than HFD Floxed mice. Accordingly, iWAT glucose transporter 4 (GLUT4) protein content, 5'AMP activated protein kinase (AMPK)(Thr172) phosphorylation, and fatty acid synthase (FAS) mRNA content were lower (P < 0.05) in IL-6 MKO than Floxed mice on Chow. In addition, iWAT AMPK(Thr172) and hormone-sensitive lipase (HSL)(Ser565) phosphorylation as well as perilipin protein content was higher (P < 0.05) in HFD IL-6 MKO than HFD Floxed mice, and pyruvate dehydrogenase E1α (PDH-E1α) protein content was higher (P < 0.05) in HFD ExTr IL-6 MKO than HFD ExTr Floxed mice.<bold>Conclusions: </bold>These findings indicate that SkM IL-6 affects iWAT mass through regulation of glucose uptake capacity as well as lipogenic and lipolytic factors.
- Publication
Obesity (19307381), 2015, Vol 23, Issue 8, p1616
- ISSN
1930-7381
- Publication type
journal article
- DOI
10.1002/oby.21139