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Biochim Biophys Acta. 2010 Mar;1801(3):320-6. doi: 10.1016/j.bbalip.2009.09.025. Epub 2009 Oct 8.

Insulin resistance, lipotoxicity and endothelial dysfunction.

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  • 1Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, The LIGHT Laboratories, Clarendon Way, Leeds, LS29JT, UK. h.imrie@leeds.ac.uk

Abstract

The number of people with the insulin-resistant conditions of type 2 diabetes mellitus (T2DM) and obesity has reached epidemic proportions worldwide. Eighty percent of people with T2DM will die from the complications of cardiovascular atherosclerosis. Insulin resistance is characterised by endothelial dysfunction, which is a pivotal step in the initiation/progression of atherosclerosis. A hallmark of endothelial dysfunction is an unfavourable imbalance between the bioavailability of the antiatherosclerotic signalling molecule nitric oxide (NO) and proatherosclerotic reactive oxygen species. In this review we discuss the mechanisms linking insulin resistance to endothelial dysfunction, with a particular emphasis on a potential role for a toxic effect of free fatty acids on endothelial cell homeostasis.

Copyright (c) 2009 Elsevier B.V. All rights reserved.

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