Related Experiment Video
Updated: Apr 12, 2026

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
Published on: May 2, 2025
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.
Abstract:
The incidence of progressive kidney disease associated with diabetes continues to increase worldwide. Only partial renoprotection is achieved by current standard therapy with angiotensin-converting enzyme inhibitors and/or angiotensin-receptor blockers, increasing the need for novel therapeutic approaches. Experimental studies have provided evidence of a pathogenic role for endothelin-1 (ET-1) and its cognate receptors in the development and progression of diabetic nephropathy. ET-1, mainly through the activation of ETA receptor, contributes to renal cell injury, inflammation, and fibrosis. In animal models of type 1 and type 2 diabetes, ETA-selective antagonists have been shown to provide renoprotective effects, supplying the rationale for clinical trials in patients with diabetic nephropathy with ETA-receptor antagonists administered in addition to renin-angiotensin system blockade.
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.
Related Concept Videos
Chronic Kidney Disease I: Introduction
Chronic Kidney Disease II: Clinical Manifestations
Chronic Kidney Disease III: Interprofessional Care
Acute Kidney Injury IV: Diagnostic Studies and Prevention
Pathophysiology of Diabetes
Type 1 diabetes is characterized by autoimmune-mediated destruction of pancreatic β cells, with environmental factors potentially triggering this process in genetically susceptible individuals. Despite many not having a family history, certain genes increase susceptibility,...
Preclinical Development: Overview

