Key result
Acutely elevated glucose enhanced vasoconstrictor responses in vascular smooth muscle through distinct and complementary PKCα- and PKCβ-mediated inhibition of voltage-gated potassium channels.
Why the study?
Does acutely elevated glucose increase vasoconstrictor responses via PKC-dependent inhibition of voltage-gated potassium channels in vascular smooth muscle?
Population
Rat isolated mesenteric arterial myocytes, rat mesenteric arteries, porcine coronary arteries, and human…
Comparison
Acutely elevated glucose concentrations and PKC… vs Lower glucose concentrations or absence of PKC…
Design
Preclinical
Authors
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May enhance vascular tone in hyperglycemia; leaves open clinical relevance pending in vivo studies.
Does acutely elevated glucose increase vasoconstrictor responses via PKC-dependent inhibition of voltage-gated potassium channels in vascular smooth muscle?
Elevated glucose enhances vasoconstriction through PKCα/PKCβ-mediated inhibition of voltage-gated potassium channels, presenting a potential therapeutic target for improving microvascular perfusion in hyperglycemic patients post-MI.
Jackson et al. (2015) studied this question. Elevated glucose vs. Lower glucose concentrations was evaluated on Inhibition of voltage-gated potassium (Kv) current and enhanced constrictor response. Acutely elevated glucose enhanced vasoconstrictor responses in vascular smooth muscle through distinct and complementary PKCα- and PKCβ-mediated inhibition of voltage-gated potassium channels.
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