Improving Insulin Responsiveness in Muscle Cells
Author Information
Author(s): Sparks Lauren M., Moro Cedric, Ukropcova Barbara, Bajpeyi Sudip, Civitarese Anthony E., Hulver Matthew W., Thoresen G. Hege, Rustan Arild C., Smith Steven R.
Primary Institution: Pennington Biomedical Research Center
Hypothesis
Activation of cAMP/PKA and calcium signaling pathways in cultured human myotubes would provide further insight into regulation of lipid storage, lipolysis, lipid oxidation and insulin responsiveness.
Conclusion
Activating specific signaling pathways in myotubes leads to better lipid metabolism and improved insulin responsiveness, which could help in treating obesity and type 2 diabetes.
Supporting Evidence
- PFI treatment increased lipid oxidation and storage in myotubes.
- Insulin-mediated glycogen storage improved significantly after PFI treatment.
- Gene expression related to lipid metabolism was upregulated with PFI treatment.
Takeaway
This study shows that certain treatments can help muscle cells use fat better and respond to insulin more effectively, which is important for people with diabetes.
Methodology
Human myoblasts were isolated, cultured, and differentiated into myotubes, then treated with forskolin and ionomycin to activate signaling pathways.
Participant Demographics
Four young lean healthy male subjects, average age 28 years.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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