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Role of the IRS-1 and/or -2 in the pathogenesis of insulin resistance in Dahl salt-sensitive (S) rats

Heart International 2009;4(1):e6 https://doi.org/10.4081/hi.2009.e6

Abstract

Insulin resistance is a common finding in hypertensive humans and animal models. The Dahl salt-sensitive (S) rat is an ideal model of genetically predetermined insulin resistance and salt-sensitive hypertension. Along the insulin signaling pathway, the insulin receptor substrates 1 and 2 (IRS-1 and -2) are important mediators of insulin signaling. IRS-1 and/or IRS-2 genetic variant(s) and/or enhanced serine phosphorylation correlate with insulin resistance. The present commentary was designed to highlight the significance of IRS-1 and/or -2 in the pathogenesis of insulin resistance. An emphasis will be given to the putative role of IRS-1 and/or -2 genetic variant(s) and serine phosphorylation in precipitating insulin resistance.

Keywords

Dahl S rats, insulin resistance, saltsensitivity, insulin signaling pathway, genetic contributors, molecular contributors.

Received

May 12, 2009

Accepted

2009-09-04T00:00:00

Published Online

December 01, 2009

Correspondence

Marlene Shehata, 207-1140 Fisher Avenue, K1Z 8M5, Ottawa, ON, Canada. E-mail: marlenefouad@yahoo.com

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