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- W2024146170 abstract "ABSTRACT Objective: Skeletal muscle blood flow during exercise is impaired in obesity. We tested the hypothesis that the attenuated vasodilation in skeletal muscle arterioles of obese Zucker rats (OZR) is due to altered K ATP channel‐mediated vasodilation. Materials and Methods: K ATP channel function was determined in isolated skeletal muscle arterioles in response to the K ATP opener cromakalim (0.1–10 μ M) during normal myogenic tone and α ‐adrenergic‐mediated tone (0.1 μ M phenylephrine). The spinotrapezius muscle was prepared and the vasodilatory responses to muscle stimulation or iloprost (0.028–2.8 μ M) were observed before and after the application of the K ATP inhibitor, glibenclamide (10 μ M). Channel subunit expression was determined by using western blot analyses. Results: Cromakalim concentration‐response curves were shifted in OZR as compared to lean controls. OZR exhibited impaired functional and iloprost‐induced vasodilation as compared to the lean controls. Glibenclamide inhibited the functional and iloprost‐induced dilation in the lean rats with no effects in the obese animals. Channel subunit expression was similar in femoral arteries. Conclusion: The impaired functional vasodilation in the OZR is associated with altered K ATP channel sensitivity." @default.
- W2024146170 created "2016-06-24" @default.
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- W2024146170 date "2008-08-01" @default.
- W2024146170 modified "2023-10-16" @default.
- W2024146170 title "K<sub>ATP</sub>-mediated Vasodilation is Impaired in Obese Zucker Rats" @default.
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- W2024146170 doi "https://doi.org/10.1080/10739680801942240" @default.
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