Key result
A 12-week high-cholesterol diet in male rats reduced endothelial glycocalyx thickness via gene downregulation, impairing nitric oxide release and vasomotor responses.
Why the study?
Does a 12-week high-cholesterol diet reduce endothelial glycocalyx thickness and impair vasomotor responses in Sprague-Dawley male rats?
Does a 12-week high-cholesterol diet reduce endothelial glycocalyx thickness and impair vasomotor responses in Sprague-Dawley male rats?
A high-cholesterol diet impairs endothelial vasomotor function in rats by reducing endothelial glycocalyx thickness via gene downregulation rather than increased shedding.
Does not support clinical practice changes; hypothesis-generating for glycocalyx mechanisms in human atherosclerosis.
Twelve-week high-cholesterol (HC) diet reduces the thickness of the endothelial glycocalyx in Sprague-Dawley (SD) male rats, which is mainly attributed to a downregulation of heparan sulfate proteoglycan-related genes (syndecan-3, glypican-1, EXT1), not resulting from an enhanced shedding of sulfated glycosaminoglycans (sGAGs) into the plasma. HC-diminished glycocalyx may disturb its mechanotransduction of local shear stress, lower nitric oxide (NO) release, and impair vasomotor responses to norepinephrine (NE) and acetylcholine (ACh).
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Kang et al. (2020) studied Endothelial dysfunction. High-cholesterol (HC) diet was evaluated on Thickness of the endothelial glycocalyx and vasomotor responses. A 12-week high-cholesterol diet in male rats reduced endothelial glycocalyx thickness via gene downregulation, impairing nitric oxide release and vasomotor responses.
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