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Trends Pharmacol Sci. 2006 Feb;27(2):113-20. Epub 2006 Jan 6.

Ca2+ signalling and pancreatitis: effects of alcohol, bile and coffee.

Author information

1
MRC Group, Physiological Laboratory and Division of Surgery and Oncology, University of Liverpool, Liverpool L69 3BX, UK. o.h.petersen@liv.ac.uk

Abstract

Ca2+ is a universal intracellular messenger that controls a wide range of cellular processes. In pancreatic acinar cells, acetylcholine and cholecystokinin regulate secretion via generation of repetitive local cytosolic Ca2+ signals in the apical pole. Bile acids and non-oxidative alcohol metabolites can elicit abnormal cytosolic Ca2+ signals that are global and sustained and result in necrosis. Necrosis results from excessive loss of Ca2+ from the endoplasmic reticulum, which is mediated by Ca2+ release through specific channels and inhibition of Ca2+ pumps in intracellular stores, followed by entry of extracellular Ca2+. Reduction of the cellular ATP level has a major role in this process. These abnormal Ca2+ signals, which can be inhibited by caffeine, explain how excessive alcohol intake and biliary disease cause acute pancreatitis, an often-fatal human disease in which the pancreas digests itself and its surroundings.

PMID:
16406087
DOI:
10.1016/j.tips.2005.12.006
[Indexed for MEDLINE]

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