ADPN

This study investigates the role of Adiponectin Receptor 1 (AdipoR1) in restoring nitric oxide (NO)-mediated flow-induced dilation (FID) in arterioles from patients with coronary artery disease (CAD). The authors hypothesize that AdipoR1 activation is key to this effect and that osmotin, a plant-derived protein, could mimic adiponectin's action. Human arterioles from CAD patients were tested, and it was found that exogenous adiponectin failed to restore NO-mediated FID in arterioles treated with AdipoR1 siRNA. However, osmotin treatment partially restored NO-mediated FID, an effect that was blocked when AdipoR1 expression was reduced. These findings underscore the essential role of AdipoR1 in adiponectin-induced NO signaling and suggest that osmotin may be a potential therapeutic approach for alleviating microvascular endothelial dysfunction in cardiovascular disease patients.