Mode
Text Size
Log in / Sign up

Endothelin receptor antagonists reduce albuminuria and kidney events in patients with diabetic kidney diseaseEndothelin Receptor Antagonists May Help Protect Kidneys in Diabetes

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway
Note that ETAR antagonists may reduce albuminuria but are limited by risks of fluid retention and heart failure.

This narrative review examines the pathophysiology of diabetic kidney disease (DKD) in patients with type 2 diabetes mellitus (T2DM), specifically focusing on the ET-1/ETAR axis. The authors argue that ET-1 drives DKD progression through ETAR-mediated hemodynamic, podocyte, mesangial, and tubulointerstitial injury, while protective ETB signaling is impaired.

Clinical findings indicate that selective ETAR antagonists can reduce albuminuria and kidney events in clinical trials. Additionally, ET-1 is identified as a candidate non-invasive biomarker for early DKD detection and prognosis. These findings suggest a dual role for the ET-1 pathway in both diagnostic and therapeutic contexts.

Despite these findings, the authors note that ETAR antagonists are associated with safety signals including fluid retention and heart failure. The review concludes that while ETAR antagonists show efficacy in reducing albuminuria, their clinical application is currently constrained by these safety concerns. Combination strategies are currently under evaluation to address these limitations.

How this fits prior evidence

This review addresses a gap in the management of diabetic kidney disease by exploring the ET-1/ETAR axis. While prior coverage established that SGLT2 inhibitors show significant cognitive improvement in patients with T2DM, this review focuses on the specific role of endothelin receptor antagonists in reducing albuminuria and kidney events. It also identifies ET-1 as a potential biomarker for early detection, complementing the use of other biomarkers like SFRP4, which is currently considered a research biomarker only.

This review looked at how the endothelin-1 (ET-1) system affects people with type 2 diabetes and diabetic kidney disease. The research found that a specific pathway in this system can cause damage to the kidneys over time. Because of this, certain medications called endothelin receptor antagonists are being studied to see if they can block this damage and reduce protein in the urine.

Clinical trials showed that these medications could help reduce albuminuria and certain kidney events. However, the review also noted that these drugs can sometimes cause side effects like fluid retention or heart failure. Because of these safety concerns, doctors are currently looking at different ways to use these treatments more safely.

While the findings are promising, the evidence is still being evaluated. ET-1 is also being studied as a way to find kidney disease earlier. Patients should talk to their doctors to understand how these findings might relate to their specific treatment plan.

What this means for you:
Endothelin receptor antagonists may reduce kidney damage in diabetes but carry risks like fluid retention.

Common questions

What is the role of endothelin-1 in kidney disease?

Endothelin-1 (ET-1) is a substance that can drive the progression of diabetic kidney disease. It causes damage to different parts of the kidney through specific pathways. Because of this, researchers are looking at ET-1 as a way to detect kidney disease earlier and as a way to understand how the disease progresses.

How do endothelin receptor antagonists work for patients?

These medications are designed to block the harmful effects of the ET-1 pathway. Clinical trials have shown that selective endothelin receptor antagonists can reduce albuminuria and certain kidney events. However, these drugs can also lead to side effects like fluid retention or heart failure, so their use requires careful consideration.

Are these treatments safe for people with diabetes?

While some trials show these medications can reduce kidney issues, they are associated with safety signals such as fluid retention and heart failure. Because of these risks, researchers are currently evaluating different combination strategies to make the treatment safer and more effective for patients.

Study Details

Study typeSystematic review
EvidenceLevel 1
PublishedNov 2026
View Original Abstract ↓
Diabetic kidney disease (DKD) is the most prevalent microvascular complication of type 2 diabetes mellitus (T2DM) and a leading global cause of end-stage kidney disease (ESKD). Current first-line regimens, including renin-angiotensin-aldosterone system inhibitors and sodium-glucose cotransporter 2 inhibitors, only partially slow the decline in renal function, and a substantial proportion of patients retain residual renal risk. Endothelin-1 (ET-1), a vasoactive peptide produced by intrinsic renal cells, drives the progression of DKD through endothelin A receptor (ETAR)-mediated hemodynamic, podocyte, mesangial, and tubulointerstitial injury, whereas protective endothelin B receptor signaling is impaired. Selective ETAR antagonists reduce albuminuria and kidney events in clinical trials, but fluid retention and heart failure signals limit their routine use, and combination strategies are under evaluation in ongoing phase III trials. ET-1 also serves as a candidate non-invasive biomarker for early DKD detection and prognosis. This narrative review integrates the molecular mechanisms of endothelin system activation, the multilayered renal injury mediated by the ET-1/ETAR axis, the clinical evidence for endothelin receptor antagonists, and the biomarker value of ET-1. We further discuss the potential interface between the gut-kidney axis and the endothelin system, and we outline the research priorities that could translate this pathway into precision therapy for DKD.
Free Newsletter

Clinical research that matters. Delivered to your inbox.

Join thousands of clinicians and researchers. No spam, unsubscribe anytime.