Chronic treatment with terbutaline increases glucose and oleic acid oxidation and protein synthesis in cultured human myotubes

ABSTRACT: Objective: In vivo studies have reported several beneficial metabolic effects of β-adrenergic receptor agonist administration in skeletal muscle, including increased glucose uptake, fatty acid metabolism, lipolysis and mitochondrial biogenesis. Although these effects have been widely studied in vivo, the in vitro data are limited to mouse and rat cell lines. Therefore, we sought to discover the effects of the β2-adrenergic receptor agonist terbutaline on metabolism and protein synthesis in human primary skeletal muscle cells. Results: The results showed that 4 h treatment with terbutaline was sufficient to increase glucose uptake in human myotubes, but also decreased both glucose and oleic acid oxidation along with oleic acid uptake. Moreover, administration of terbutaline for 96 h increased glucose uptake and oxidation, as well as oleic acid oxidation, leucine incorporation into cellular protein and upregulated several pathways related to mitochondrial metabolism. Conclusion: These results suggest that β2-adrenergic receptor have direct effects in human skeletal muscle affecting fuel metabolism and net protein synthesis, effects that might be favourable for both type 2 diabetes and muscle wasting disorders.

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Homo Sapiens (human)

SUBMITTER: Tuula Nyman  

LAB HEAD: Tuula Nyman

PROVIDER: PXD024063 | Pride | 2022-02-14

REPOSITORIES: Pride