Et and diabetic nephropathy: preclinical and clinical studies

Elena Gagliardini1, Carlamaria Zoja2, Ariela Benigni3

  • 1Unit of Advanced Microscopy, IRCCS - Istituto di Ricerche Farmacologiche Mario Negri, Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso, Bergamo, Italy.

Insights

Diabetic kidney disease is rising globally. Targeting endothelin-1 (ET-1) with ETA-receptor antagonists shows promise for renoprotection beyond current therapies.

Area of Science:

  • Nephrology
  • Endocrinology
  • Pharmacology

Background:

  • Diabetic nephropathy incidence is increasing worldwide.
  • Current therapies offer only partial renoprotection for diabetic kidney disease.
  • Endothelin-1 (ET-1) plays a pathogenic role in diabetic nephropathy progression.

Purpose of the Study:

  • To investigate the therapeutic potential of targeting the endothelin-1 pathway in diabetic nephropathy.
  • To evaluate the renoprotective effects of ETA-receptor antagonists in preclinical models of diabetes.

Main Methods:

  • Review of experimental studies on endothelin-1 and diabetic nephropathy.
  • Analysis of data from animal models of type 1 and type 2 diabetes treated with ETA-selective antagonists.

Main Results:

  • Endothelin-1 (ET-1) activation, particularly via ETA receptors, contributes to renal injury, inflammation, and fibrosis.
  • ETA-selective antagonists demonstrated renoprotective effects in animal models of diabetes.
  • These findings support the use of ETA-receptor antagonists as an add-on therapy.

Conclusions:

  • Targeting the ET-1 pathway, specifically ETA receptors, offers a novel therapeutic strategy for diabetic nephropathy.
  • ETA-receptor antagonists show potential for improving renoprotection in diabetic patients.
  • Further clinical investigation is warranted for ETA-receptor antagonists combined with renin-angiotensin system blockade.

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