Key result
High LDL linked to reduced flow-induced vasodilation driven by endothelial Kir2.1 channel suppression.
Observational (n=16)
Cholesterol-induced suppression of endothelial Kir2.1 channels is a major mechanism underlying endothelial dysfunction in hypercholesterolemia.
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Does not support practice change; leaves open whether Kir2.1 suppression drives endothelial dysfunction in human hypercholesterolemia.
A 2021 study conducted an observational in Healthy subjects with varying LDL-cholesterol levels (n=16). High LDL-cholesterol (>100 mg/dL) vs. Low LDL-cholesterol (<100 mg/dL) was evaluated on Flow-induced vasodilation (FIV) in resistance arteries. High LDL-cholesterol (>100 mg/dL) was associated with reduced flow-induced vasodilation in resistance arteries compared to low LDL-cholesterol, driven by suppression of endothelial Kir2.1 channels.
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