Journal
CURRENT OPINION IN NEPHROLOGY AND HYPERTENSION
Volume 30, Issue 4, Pages 456-465Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MNH.0000000000000716
Keywords
albuminuria; chronic kidney disease; endothelin receptor antagonist; nephropathy
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Funding
- Chief Scientist Office Senior Clinical Research Fellowship [SCAF/19/02]
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Endothelin receptor antagonists show significant kidney protection in patients with diabetic kidney disease, with potential therapeutic effects in non-diabetic kidney diseases such as IgA nephropathy and FSGS.
Purpose of review To summarize new clinical findings of endothelin receptor antagonists (ERA) in various etiologies of kidney disease targeted in clinical trials. Recent findings Endothelin-1 is a multifunctional peptide with potential relevance to glomerular and tubulointerstitial kidney diseases. The phase 3 SONAR trial demonstrated a significant reduction in clinically relevant kidney outcomes for patients with diabetic kidney disease (DKD) after long-term treatment with the ERA, atrasentan, in addition to blockade of the renin-angiotensin-aldosterone system. Promising preclinical disease models and small clinical trials in non-DKD resulted in the initiation of phase 3 trials investigating the effects of long-term treatment with ERA in patients with immunoglobulin A (IgA) nephropathy and focal segmental glomeruloscelerosis (FSGS). The mechanisms by which ERA protects the kidneys have been extensively studied with evidence for the protection of tubule cells, podocytes, mesangial cells, the endothelial glycocalyx, and a reduction in glomerular perfusion pressure. The occurrence of fluid retention during ERA treatment, particularly in susceptible populations, necessitates strategies to support safe and effective treatment. Treatment with ERA induces long-term kidney protection in DKD. Phase 3 trials are underway to investigate ERA effects in patients with IgA nephropathy and FSGS.
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