Renal physiology of glucose handling and therapeutic implications

David Z Cherney1,2,3,4, Mehmet Kanbay5, Julie A Lovshin1,4,6,7

  • 1Toronto General Hospital Research Institute, UHN, Toronto, ON, Canada.

Insights

Sodium-glucose cotransporter 2 (SGLT2) inhibitors offer significant cardiovascular and renal benefits for type 2 diabetes patients, independent of glucose control. These effects extend across various chronic kidney disease stages, expanding their therapeutic potential.

Area of Science:

  • Nephrology
  • Cardiology
  • Endocrinology

Background:

  • Sodium-glucose cotransporter 2 (SGLT2) inhibitors were initially approved for glycemic control in type 2 diabetes (T2D).
  • Their use was limited in chronic kidney disease (CKD) due to attenuated glycemic effects at later stages.
  • Emerging evidence highlights benefits beyond glucose lowering, including cardiovascular and renal protection.

Purpose of the Study:

  • To review the evolving rationale for SGLT2 inhibitor use in T2D and CKD.
  • To discuss the pharmacodynamic and clinical effects of SGLT2 inhibitors beyond glycemic control.
  • To summarize evidence for cardiovascular and renal benefits, including independence from glycemic control.

Main Methods:

  • Review of clinical trial data, including cardiovascular outcome trials (EMPA-REG OUTCOME, CANVAS, DECLARE-TIMI 58) and renal protection trials (CREDENCE).
  • Analysis of pharmacodynamic effects, including antihypertensive, antialbuminuric, and glomerular hypertension reduction.
  • Assessment of SGLT2 inhibitor efficacy across different stages of CKD and in albuminuric T2D patients.

Main Results:

  • SGLT2 inhibitors demonstrate significant reductions in cardiovascular and renal events, independent of glycemic control.
  • Antihypertensive and antialbuminuric effects are preserved across CKD stages.
  • The CREDENCE trial confirmed renal and cardiovascular benefits in albuminuric T2D patients.

Conclusions:

  • SGLT2 inhibitors have evolved into crucial therapies for managing T2D, offering substantial cardiovascular and renal protection.
  • Their benefits extend beyond glycemic control and are evident even in later stages of CKD.
  • Ongoing research will further define the role of SGLT2 inhibitors in non-diabetic CKD and type 1 diabetes.

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