Mouse models of β-cell K channel dysfunction

ATP-sensitive K (K) channels in pancreatic β-cells couple glucose metabolism to insulin secretion. Reduced K channel activity produces excessive insulin release and hyperinsulinism whereas increased K channel activity leads to lower insulin secretion and diabetes. Paradoxically, mice with genetic de...

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Main Authors: Brereton, M, Ashcroft, F
Format: Journal article
Published: 2013
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author Brereton, M
Ashcroft, F
author_facet Brereton, M
Ashcroft, F
author_sort Brereton, M
collection OXFORD
description ATP-sensitive K (K) channels in pancreatic β-cells couple glucose metabolism to insulin secretion. Reduced K channel activity produces excessive insulin release and hyperinsulinism whereas increased K channel activity leads to lower insulin secretion and diabetes. Paradoxically, mice with genetic deletion of K channels, or loss-of-function mutations, are only transiently hypoglycaemic during the neonatal period and often display reduced glucose-stimulated insulin secretion subsequently. Mice with K channel gain-of-function mutations are hyperglycaemic and have impaired glucose-stimulated insulin secretion, a phenotype that accurately mimics human diabetes. This review discusses how mice expressing altered K channels have provided valuable insight into β-cell function. © 2013 Elsevier Ltd. All rights reserved.
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spelling oxford-uuid:f4cbae0c-0102-4904-bee1-beecde520cb52022-03-27T12:22:25ZMouse models of β-cell K channel dysfunctionJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f4cbae0c-0102-4904-bee1-beecde520cb5Symplectic Elements at Oxford2013Brereton, MAshcroft, FATP-sensitive K (K) channels in pancreatic β-cells couple glucose metabolism to insulin secretion. Reduced K channel activity produces excessive insulin release and hyperinsulinism whereas increased K channel activity leads to lower insulin secretion and diabetes. Paradoxically, mice with genetic deletion of K channels, or loss-of-function mutations, are only transiently hypoglycaemic during the neonatal period and often display reduced glucose-stimulated insulin secretion subsequently. Mice with K channel gain-of-function mutations are hyperglycaemic and have impaired glucose-stimulated insulin secretion, a phenotype that accurately mimics human diabetes. This review discusses how mice expressing altered K channels have provided valuable insight into β-cell function. © 2013 Elsevier Ltd. All rights reserved.
spellingShingle Brereton, M
Ashcroft, F
Mouse models of β-cell K channel dysfunction
title Mouse models of β-cell K channel dysfunction
title_full Mouse models of β-cell K channel dysfunction
title_fullStr Mouse models of β-cell K channel dysfunction
title_full_unstemmed Mouse models of β-cell K channel dysfunction
title_short Mouse models of β-cell K channel dysfunction
title_sort mouse models of β cell k channel dysfunction
work_keys_str_mv AT breretonm mousemodelsofbcellkchanneldysfunction
AT ashcroftf mousemodelsofbcellkchanneldysfunction