Dapagliflozin effect on endothelial dysfunction in diabetic patients with atherosclerotic disease: a randomized

Andrei C Sposito1, Ikaro Breder2, Alexandre A S Soares2

  • 1Aterosclerose and Vascular Biology Laboratory (Aterolab), Cardiology Division, State University of Campinas Medical School, Rua Tessalia Vieira de Camargo 126, Cidade Universitaria Zeferino Vaz, Campinas, SP, 13084-971, Brazil. sposito@unicamp.br.

Abstract

Insights

Sodium glucose cotransporter-2 inhibitors (SGLT2i) like dapagliflozin improve arterial wall function in type 2 diabetes mellitus (T2DM) patients. This vascular benefit occurs independently of glucose lowering, suggesting a direct effect on endothelial health.

Area of Science:

  • Cardiovascular Medicine
  • Endocrinology
  • Pharmacology

Background:

  • The independent effect of SGLT2 inhibitors (SGLT2i) on arterial wall function in T2DM is unclear.
  • This study investigates if SGLT2i can improve endothelial dysfunction beyond glucose control.

Purpose of the Study:

  • To assess the efficacy of SGLT2i (dapagliflozin) versus a glucose-lowering equivalent (glibenclamide) in improving endothelial function in T2DM patients.
  • To determine if SGLT2i offers vascular benefits independent of glycemic control.

Main Methods:

  • A prospective, randomized clinical trial involving 98 T2DM patients with elevated carotid intima-media thickness.
  • Patients received either dapagliflozin or glibenclamide for 12 weeks, alongside metformin.
  • Coprimary endpoints included resting and ischemia-reperfusion induced flow-mediated dilation (FMD).

Main Results:

  • Dapagliflozin significantly improved resting FMD compared to glibenclamide (p=0.0001).
  • Higher plasma nitrite levels and lower resistive indices were observed in the dapagliflozin group.
  • No significant differences in inflammation or oxidative stress biomarkers were found between groups.

Conclusions:

  • Dapagliflozin enhances micro- and macrovascular endothelial function in T2DM patients with subclinical atherosclerosis.
  • These improvements are independent of glycemic control, highlighting a direct vascular benefit of SGLT2 inhibitors.

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