Glucotoxicity and pancreatic proteomics.

J Proteomics

Biomedical Proteomics Research Group, University Medical Center, Geneva, Switzerland.

Published: January 2009

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Article Abstract

Chronic hyperglycaemia is one of the main characteristics of a diabetic state. This is also the first cause of diabetic complications. However, it is now generally accepted that glucotoxicity also participates in the worsening of type 2 diabetes, by affecting the secretion of beta-cells. So far, different mechanisms have been proposed to explain the adverse effects of chronic hyperglycaemia. One of them suggests that the modulation of expression of several key proteins during a hyperglycaemia state, may explain the toxic effect of glucotoxicity. Therefore, proteomic analysis of biological samples represents an interesting method to study the effect of chronic hyperglycaemia on protein expression. The discovery of new proteins for which the expression could be modulated by chronic hyperglycaemia may probably help to better understand the mechanisms underlying glucotoxicity. In this review, we will first present an introduction of the different mechanisms known to be involved in the control of glucose homeostasis and in the development of glucotoxicity. In a second part, some proteomic data linked with the effect of glucotoxicity in pancreas, pancreatic islets and beta-cells will be presented and discussed.

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http://dx.doi.org/10.1016/j.jprot.2008.10.002DOI Listing

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