Effects of mutations in the insulin-like growth factor signaling system on embryonic pancreas development and beta-cell compensation to insulin resistance.

Abstract excerpt

Insulin and insulin-like growth factors (IGF) play overlapping and complementary roles in pancreatic beta-cell function and peripheral metabolism. In this study, we have analyzed mice bearing loss-of-function mutations of the insulin/IGF signaling systems. Combined inactivation of insulin receptor (Insr) and Igf1 receptor (Igf1r), but not of either receptor alone, resulted in a 90% decrease in the size of the...

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