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Because insulin resistance/diabetes may cause inordinate vascular complications in females, we have investigated the effects of insulin and insulin-like growth factor (IGF-1) on vascular reactivity in 12-week-old female Zucker obese (Ob) rats, a rodent model of insulin resistance and its lean (Ln) age-matched counterpart. Endothelium intact aortic rings from Ob animals and their Ln littermates (12...
Insulin like growth factor 1 (IGF-1) vasodilates, increases blood flow and lowers blood pressure; nitric oxide (NO) has been suggested to mediate some of these effects. We studied the role of IGF-1 in the regulation of NO production in vascular smooth muscle cells (VSMC). IGF-1 induced a concentration and time-dependent increase in NO release from endothelium-denuded aortic rings. Pre-incubation...
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