Abstract
Skeletal muscle is the major site of glucose disposal. Promoting glucose uptake into this tissue may attenuate the insulin resistance that precedes type 2 diabetes. However, the anti-diabetic effect of marine algae on glucose uptake and metabolism in skeletal muscle remains poorly understood. Here, we report the glucose uptake effects of octaphlorethol A (OPA), a novel phenolic compound isolated from Ishige foliacea, on skeletal muscle cells. OPA increased glucose uptake in differentiated L6 rat myoblast cells in a dose-dependent manner relative to the control. In addition, we found that OPA increased glucose transporter 4 (Glut4) translocation to the plasma membrane. Furthermore, we also demonstrated these OPA effects essentially depended on the protein kinase B (Akt) and AMP-activated protein kinase (AMPK) activation. In summary, PI3-K/Akt and AMPK activation were involved in mediating the effects of OPA on glucose transport activation and insulin sensitivity. OPA can be further developed as a potential anti-diabetic therapy.
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More From: Biochemical and Biophysical Research Communications
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