Abstract
An increased prevalence and incidence of cardiovascular disease is the most important clinical consequence of abdominal obesity. Although defects in glucose handling in skeletal muscle have been extensively investigated, they have failed to clarify why insulin resistance is linked to vascular disease. Non-classic actions of insulin such as those on haemodynamics, nerve function and haemostasis and on lipoprotein metabolism would appear of greater interest in this respect. It is now clear that obese individuals exhibit resistance to some of the non-classic effects of insulin. These include resistance to insulin action on large vessel compliance, nitric oxide-dependent stimulation of vasodilation in resistance vessels, activation of the sympathetic nervous system by insulin but not other stimuli, platelet anti-aggregation and suppression of hepatic very low density lipoprotein production. The exact cause(s) of resistance to these non-classic insulin actions are unclear but their understanding would seem important to understand the links between obesity and cardiovascular disease.
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Yki-Järvinen, H., Westerbacka, J. Vascular actions of insulin in obesity. Int J Obes 24 (Suppl 2), S25–S28 (2000). https://doi.org/10.1038/sj.ijo.0801272
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DOI: https://doi.org/10.1038/sj.ijo.0801272
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