Renal Toxicity Caused by Diethylene Glycol: an Overview

Author:

Araujo Stanley Almeida1,Faria Barbara Caroline Dias1,Vasconcelos Julia Cunha1,Cruz Aniel Feitosa da1,de Souza Vitor Santos1,Wanderley David Campos1,Silva Ana Cristina Simoes e2ORCID

Affiliation:

1. UFMG: Universidade Federal de Minas Gerais

2. Universidade Federal de Minas Gerais

Abstract

Abstract Diethylene glycol (DEG) is nephrotoxic, potentially resulting in high morbidity and mortality. Its main nephrotoxic by-product is diglycolic acid (DGA). This narrative overview summarizes selected literature with a focus on clinical findings, pathophysiology, diagnosis including morphological features of renal biopsies, and management. The kidney injury in DEG poisoning is secondary to proximal tubular necrosis caused by DGA. Marked vacuolization and edema of epithelial cells obstruct the lumen, reducing urine flow and, consequently, resulting in anuria and uremia. The clinical alterations due to DEG poisoning are dose-dependent. Patients may present with gastrointestinal symptoms and anion gap metabolic acidosis, followed by renal failure, and, later, encephalopathy and neuropathy. Although this three-phase pattern has been described, signs and symptoms may be overlapping. Data about DEG intoxication is scarce. Sometimes the diagnosis is challenging. The management includes supportive care, gastric decontamination, correction of acid-base disorders, and hemodialysis. The understanding of the metabolic processes related to DEG poisoning may contribute to its management, preventing death, serious sequels, or irreversible lesions.

Publisher

Research Square Platform LLC

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