Title : Deletion of GPR40 impairs glucose-induced insulin secretion in vivo in mice without affecting intracellular fuel metabolism in islets.

Pub. Date : 2009 Nov

PMID : 19720802






9 Functional Relationships(s)
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1 Deletion of GPR40 impairs glucose-induced insulin secretion in vivo in mice without affecting intracellular fuel metabolism in islets. Glucose free fatty acid receptor 1 Mus musculus
2 OBJECTIVE: The G-protein-coupled receptor GPR40 mediates fatty acid potentiation of glucose-stimulated insulin secretion, but its contribution to insulin secretion in vivo and mechanisms of action remain uncertain. Fatty Acids free fatty acid receptor 1 Mus musculus
3 OBJECTIVE: The G-protein-coupled receptor GPR40 mediates fatty acid potentiation of glucose-stimulated insulin secretion, but its contribution to insulin secretion in vivo and mechanisms of action remain uncertain. Glucose free fatty acid receptor 1 Mus musculus
4 RESULTS: Both glucose- and arginine-stimulated insulin secretion in vivo were decreased by approximately 60% in GPR40 knockout fasted and fed mice, without changes in insulin sensitivity. Glucose free fatty acid receptor 1 Mus musculus
5 RESULTS: Both glucose- and arginine-stimulated insulin secretion in vivo were decreased by approximately 60% in GPR40 knockout fasted and fed mice, without changes in insulin sensitivity. Arginine free fatty acid receptor 1 Mus musculus
6 CONCLUSIONS: These results indicate that deletion of GPR40 impairs insulin secretion in vivo not only in response to fatty acids but also to glucose and arginine, without altering intracellular fuel metabolism in islets, via a mechanism that may involve the generation of inositol phosphates downstream of GPR40 activation. Fatty Acids free fatty acid receptor 1 Mus musculus
7 CONCLUSIONS: These results indicate that deletion of GPR40 impairs insulin secretion in vivo not only in response to fatty acids but also to glucose and arginine, without altering intracellular fuel metabolism in islets, via a mechanism that may involve the generation of inositol phosphates downstream of GPR40 activation. Glucose free fatty acid receptor 1 Mus musculus
8 CONCLUSIONS: These results indicate that deletion of GPR40 impairs insulin secretion in vivo not only in response to fatty acids but also to glucose and arginine, without altering intracellular fuel metabolism in islets, via a mechanism that may involve the generation of inositol phosphates downstream of GPR40 activation. Arginine free fatty acid receptor 1 Mus musculus
9 CONCLUSIONS: These results indicate that deletion of GPR40 impairs insulin secretion in vivo not only in response to fatty acids but also to glucose and arginine, without altering intracellular fuel metabolism in islets, via a mechanism that may involve the generation of inositol phosphates downstream of GPR40 activation. Inositol Phosphates free fatty acid receptor 1 Mus musculus