Authors: Pattaranit, Ratchada; Van Den Berg, Hugo Antonius; Spanswick, David

Source: Science Progress, Volume 91, Number 3, September 2008 , pp. 285-316(32)

Publisher: Science Reviews 2000 Ltd

Abstract:

Diabetes is a common endocrine disorder, primarily characterised by elevated plasma glucose levels. The disease affects all age groups worldwide. Most patients suffer from Type 2 diabetes, which is mainly due to insulin resistance. It is thought that changes in insulin signalling pathways underlie the development of insulin resistance. This article aims to review recent studies that have elucidated the role of individual proteins in these insulin signalling pathways. These studies have been undertaken using two strategies, one employing mice carrying a global null mutation of particular gene-encoding proteins by the homologous recombination method and another strategy using mice with tissue-specific insulin receptor and/or GLUT4 knockout by the Cre-loxP system. The various phenotypes of these knockout mice, and the light they shed on the etiology of insulin resistance, are discussed. By advancing our understanding of the complex molecular mechanisms underlying insulin resistance, these knock-out models may help us to develop more effective treatments for Type 2 diabetes.

Keywords: DIABETES; INSULIN; INSULIN RECEPTOR; INSULIN RESISTANCE; GLUCOSE TRANSPORTER; GLUCOSE HOMEOSTASIS; HYPERGLYCEMIA; HYPERINSULINEMIA; TRANSGENIC KNOCKOUT; CRE-LOXP SYSTEM

Document Type: Research article

DOI: http://dx.doi.org/10.3184/003685008X361343

Publication date: 2008-09-01

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