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Hoene, M.* ; Li, J.* ; Li, Y.* ; Runge, H.* ; Zhao, X.* ; Häring, H.-U. ; Lehmann, R. ; Xu, G.* ; Weigert, C.

Muscle and liver-specific alterations in lipid and acylcarnitine metabolism after a single bout of exercise in mice.

Sci. Rep. 6:22218 (2016)
Verlagsversion DOI
Open Access Gold
Creative Commons Lizenzvertrag
Intracellular lipid pools are highly dynamic and tissue-specific. Physical exercise is a strong physiologic modulator of lipid metabolism, but most studies focus on changes induced by long-term training. To assess the acute effects of endurance exercise, mice were subjected to one hour of treadmill running, and (13)C16-palmitate was applied to trace fatty acid incorporation in soleus and gastrocnemius muscle and liver. The amounts of carnitine, FFA, lysophospholipids and diacylglycerol and the post-exercise increase in acetylcarnitine were pronouncedly higher in soleus than in gastrocnemius. In the liver, exercise increased the content of lysophospholipids, plasmalogens and carnitine as well as transcript levels of the carnitine transporter. (13)C16-palmitate was detectable in several lipid and acylcarnitine species, with pronounced levels of tracer-derived palmitoylcarnitine in both muscles and a strikingly high incorporation into triacylglycerol and phosphatidylcholine in the liver. These data illustrate the high lipid storing activity of the liver immediately after exercise whereas in muscle, fatty acids are directed towards oxidation. The observed muscle-specific differences accentuate the need for single-muscle analyses as well as careful consideration of the particular muscle employed when studying lipid metabolism in mice. In addition, our results reveal that lysophospholipids and plasmalogens, potential lipid signalling molecules, are acutely regulated by physical exercise.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Induced Insulin-resistance; Fatty-acid Oxidation; Rat Skeletal-muscles; Protein-kinase-c; Fiber Types; Carnitine; Alpha; Spectrometry; Homeostasis; Intensity
ISSN (print) / ISBN 2045-2322
e-ISSN 2045-2322
Zeitschrift Scientific Reports
Quellenangaben Band: 6, Heft: , Seiten: , Artikelnummer: 22218 Supplement: ,
Verlag Nature Publishing Group
Verlagsort London
Begutachtungsstatus Peer reviewed