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Regulation of intracellular Ca2+ stores by multiple Ca2+-releasing messengerS

Cancela, Jose M. and Petersen, Ole Holger 2002. Regulation of intracellular Ca2+ stores by multiple Ca2+-releasing messengerS. Diabetes 51 (Supp 3) , S349-S357. 10.2337/diabetes.51.2007.S349

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Although glucose-elicited insulin secretion depends on Ca2+ entry through voltage-gated Ca2+ channels in the surface cell membrane of the pancreatic β-cell, there is also ample evidence for an important role of intracellular Ca2+ stores, particularly in relation to hormone- or neurotransmitter-induced insulin secretion. There is now direct evidence for Ca2+ entry-induced release of Ca2+ from the endoplasmic reticulum in neurons, but with regard to glucose stimulation of β-cells, there is conflicting evidence about the operation of such a process. This finding suggests that the sensitivity of the Ca2+ release channels in the endoplasmic reticulum membrane varies under different conditions and therefore is regulated. Recent evidence from studies of pancreatic acinar cells has revealed combinatorial roles of multiple messengers in setting the sensitivity of the endoplasmic reticulum for Ca2+ release. Here we focus on the possible combinatorial roles of inositol 1,4,5-trisphosphate, cyclic ADP-ribose, and nicotinic acid adenine dinucleotide phosphate in β-cell function.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Systems Immunity Research Institute (SIURI)
Subjects: Q Science > QR Microbiology
Publisher: American Diabetes Association
Last Modified: 04 Jun 2017 08:01

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