Yan J, et al. European Journal of Pharmacology, 2025, 1002, 177784.
This study investigated the direct vascular effects of Ertugliflozin, using rat mesenteric arteries and mouse thoracic aorta. Arterial contractility was measured with a multi-wire myograph system, revealing that Ertugliflozin induced dose-dependent vasorelaxation against phenylephrine- and K+-induced constriction. Importantly, vasodilation was shown to be mediated by vascular smooth muscle cells (VSMCs), independent of endothelium. Mechanistic experiments demonstrated that Ertugliflozin decreased intracellular ATP and ATP/ADP ratio, activating AMPK signaling. The use of Compound C, an AMPK inhibitor, abolished Ertugliflozin's vasorelaxant effect, confirming pathway involvement. Calcium imaging showed reduced cytosolic [Ca2+]i, while mitochondrial analyses indicated suppressed fission and decreased membrane potential. These experimental findings establish that Ertugliflozin directly modulates VSMC contractility through AMPK-dependent mitochondrial regulation, highlighting its therapeutic potential for hypertension management beyond glycemic control.