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Compr Ther. 2005 Summer;31(2):106-12.

Role of impaired insulin secretion and insulin resistance in the pathogenesis of type 2 diabetes mellitus.

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  • 1Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, USA.


Type 2 diabetes mellitus (T2DM) is a heterogeneous disorder caused by a combination of genetic and acquired abnormalities that affect insulin sensitivity and insulin secretion. Currently available data suggest that insulin resistance is the acquired defect largely secondary to unhealthy lifestyles and that the major genetic factor is impaired insulin secretion. The latter is the result of both reduced beta-cell mass and functional abnormalities makes the beta-cell unable to compensate for increased insulin requirements caused by insulin resistance. Targeting both insulin resistance and impaired insulin secretion is therefore appropriate to prevent T2DM and to improve glycemic control in those with the disorder.

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