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Your search keyword '"Zakaria, Mark A"' showing total 8 results
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8. Upregulation of insulin receptor substrate-2 in pancreatic beta cells prevents diabetes.

Author

Hennige, Anita M, Burks, Deborah J, Ozcan, Umut, Kulkarni, Rohit N, Ye, Jing, Park, Sunmin, Schubert, Markus, Fisher, Tracey L, Dow, Matt A, Leshan, Rebecca, Zakaria, Mark, Mossa-Basha, Mahmud, and White, Morris F

Subjects
*ISLANDS of Langerhans transplantation, *TYPE 2 diabetes prevention, *ANIMAL experimentation, *APOPTOSIS, *BIOCHEMISTRY, *CARRIER proteins, *CELL receptors, *CELLULAR signal transduction, *COMPARATIVE studies, *DIABETES, *FAT content of food, *GENES, *INSULIN, *ISLANDS of Langerhans, *PHENOMENOLOGY, *RESEARCH methodology, *MEDICAL cooperation, *MICE, *TYPE 2 diabetes, *PHOSPHOPROTEINS, *RESEARCH, *SOMATOMEDIN, *SURVIVAL, *EVALUATION research, *CELL size, *SIGNAL peptides, *PHYSIOLOGY
Abstract

The insulin receptor substrate-2 (Irs2) branch of the insulin/IGF signaling system coordinates peripheral insulin action and pancreatic beta cell function, so mice lacking Irs2 display similarities to humans with type 2 diabetes. Here we show that beta cell-specific expression of Irs2 at a low or a high level delivered a graded physiologic response that promoted beta cell growth, survival, and insulin secretion that prevented diabetes in Irs2-/- mice, obese mice, and streptozotocin-treated mice; and that upon transplantation, the transgenic islets cured diabetes more effectively than WT islets. Thus, pharmacological approaches that promote Irs2 expression in beta cells, especially specific cAMP agonists, could be rational treatments for beta cell failure and diabetes. [ABSTRACT FROM AUTHOR]

Published
2003
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