Key result
Diet-induced obesity impairs endothelium-derived hyperpolarization-mediated vasodilation in rat mesenteric arteries due to increased IKCa and Na+/K+-ATPase and decreased Kir activity.
Why the study?
Does diet-induced obesity impair endothelium-derived hyperpolarization in rat mesenteric arteries?
Population
Rats with diet-induced obesity and age/sex-matched controls
Comparison
Cafeteria-style diet over 16-20 weeks to induce… vs Standard chow (~12 kJ, fat)
Design
Preclinical
Follow-up
16-20 weeks
Authors
Loading...
No immediate clinical implications from rat data; leaves open translation of EDH mechanisms to human obesity therapies.
Does diet-induced obesity impair endothelium-derived hyperpolarization in rat mesenteric arteries?
p-value: p=<0.05
Diet-induced obesity impairs endothelium-derived hyperpolarization in resistance vessels through altered potassium channel signaling, highlighting a mechanism for vascular dysfunction in obesity.
Haddock et al. (2011) studied Diet-induced obesity (n=110). Cafeteria-style high fat diet vs. Standard chow (~12% kJ as fat) was evaluated on Acetylcholine-mediated endothelium-derived hyperpolarization and relaxation (p=<0.05). Diet-induced obesity impairs endothelium-derived hyperpolarization-mediated vasodilation in rat mesenteric arteries due to increased IKCa and Na+/K+-ATPase and decreased Kir activity.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: