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Endothelin Receptor Antagonists: New Hope for Renal Protection?

Sheldon Tobe1, Donald E Kohan, Ranjit Singarayer

  • 1Division of Nephrology, University of Toronto, Toronto, ON, Canada, Sheldon.Tobe@sunnybrook.ca.

Current Hypertension Reports
|June 13, 2015
PubMed

Insights

Endothelin receptor antagonists (ERAs) show promise in slowing chronic kidney disease (CKD) progression by inhibiting endothelin-1. Further research is needed to balance renoprotective effects with side effects like edema.

Area of Science:

  • Nephrology
  • Pharmacology

Background:

  • Endothelin-1 (ET-1) plays a key role in chronic kidney disease (CKD) pathogenesis, contributing to renal cellular injury, proteinuria, inflammation, fibrosis, and hypertrophy.
  • Endothelin receptor antagonists (ERAs) target the detrimental effects of ET-1.

Purpose of the Study:

  • To evaluate the potential of ERAs as a novel therapeutic strategy for slowing CKD progression.
  • To assess the efficacy of ERAs in reducing proteinuria in patients with diabetic nephropathy (DN) already treated with renin-angiotensin system (RAS) blockers.

Main Methods:

  • Preclinical studies in CKD models.
  • A large-scale clinical trial investigating ERA effects on CKD progression.
  • Analysis of proteinuria reduction in DN patients on RAS inhibitors.

Main Results:

  • ERAs demonstrated potential in preclinical CKD models.
  • Initial clinical trials indicate that ERAs can reduce proteinuria in DN patients on RAS blockers.
  • Peripheral edema is a consistently reported side effect in ERA clinical trials.

Conclusions:

  • ERAs represent a potential new therapeutic paradigm for managing CKD.
  • Balancing the renoprotective benefits of ERAs with their side effect profile, such as peripheral edema, is crucial for clinical application.

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