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THE WALTER B. CANNON PHYSIOLOGY IN PERSPECTIVE LECTURE, 2007
Henry Wellcome Centre for Gene Function, University of Oxford, Oxford, United Kingdom
This essay is based on a lecture given to the American Physiological Society in honor of Walter B. Cannon, an advocate of homeostasis. It focuses on the role of the ATP-sensitive potassium K+ (KATP) channel in glucose homeostasis and, in particular, on its role in insulin secretion from pancreatic
-cells. The
-cell KATP channel comprises pore-forming Kir6.2 and regulatory SUR1 subunits, and mutations in either type of subunit can result in too little or too much insulin release. Here, I review the latest information on the relationship between KATP channel structure and function, and consider how mutations in the KATP channel genes lead to neonatal diabetes or congenital hyperinsulinism.
Kir6.2; SUR1; neonatal diabetes; hyperinsulinism
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