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The calcium-sensing receptor and insulin secretion : a role outside systemic control 15 years on

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Hodgkin, M. N., Hills, Claire E. and Squires, Paul E. (2008) The calcium-sensing receptor and insulin secretion : a role outside systemic control 15 years on. Journal of Endocrinology, Vol.199 (No.1-4). doi:10.1677/JOE-08-0261 ISSN 0022-0795.

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Official URL: http://dx.doi.org/10.1677/JOE-08-0261

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Abstract

In the 15 years since the identification and characterisation of the extracellular calcium-sensing receptor (CaR), it has become increasingly apparent that this cationic binding receptor is found in many tissues, not associated with the control of plasma calcium. One of these tissues is the pancreatic islet where insulin secretion provides the basis of energy regulation. It seems inherently unlikely that the islet responds to alterations in systemic calcium and a more plausible and intriguing possibility is that the CaR mediates cell-to-cell communication through local increases in the concentration of extracellular Ca2+, co-released with insulin. This short article explores this possibility and suggests that this novel mechanism of cell communication, along with direct coupling via gap junctions and other local paracrine regulators helps explain why the glucose responsiveness of the intact islet is greater than the sum of the composite parts in isolation.

Item Type: Journal Article
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) > Biological Sciences ( -2010)
Library of Congress Subject Headings (LCSH): Insulin, Cell interaction, Calcium -- Receptors
Journal or Publication Title: Journal of Endocrinology
Publisher: Society for Endocrinology
ISSN: 0022-0795
Official Date: 2008
Dates:
DateEvent
2008Published
Volume: Vol.199
Number: No.1-4
DOI: 10.1677/JOE-08-0261
Status: Peer Reviewed
Access rights to Published version: Restricted or Subscription Access

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