Insulin and IGF1 receptors are essential for the development and steroidogenic function of adult Leydig cells

Abstract excerpt

The insulin family of growth factors (insulin, IGF1, and IGF2) are critical in sex determination, adrenal differentiation, and testicular function. Notably, the IGF system has been reported to mediate the proliferation of steroidogenic cells. However, the precise role and contribution of the membrane receptors mediating those effects, namely, insulin receptor (INSR) and type-I insulin-like growth factor receptor...

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