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Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis

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Triamterene crystalline nephropathy.

Samih H Nasr¹, Dawn S Milliner², Thomas D Wooldridge³

¹Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN.

American Journal of Kidney Diseases : the Official Journal of the National Kidney Foundation

|August 21, 2013

Summary

Drug-induced kidney injury can occur via several pathways. This study details rare cases of triamterene crystalline nephropathy, highlighting diagnostic challenges.

Keywords:

Triamterene acute kidney injury crystalline nephropathy drug nephrotoxicity kidney biopsy

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Area of Science:

Nephrology
Pharmacology
Pathology

Background:

Medications are a significant cause of acute kidney injury (AKI).
Mechanisms include direct tubular toxicity, allergic interstitial nephritis, osmotic nephrosis, and crystalline nephropathy.
Crystalline nephropathy is a rare but serious adverse drug reaction.

Observation:

This report presents two cases of triamterene crystalline nephropathy.
One case was initially misdiagnosed as 2,8-dihydroxyadenine crystalline nephropathy.
Histologic characteristics of triamterene crystalline nephropathy are not well-defined.

Findings:

Triamterene can induce crystalline nephropathy, a rare form of drug-induced AKI.
The histological features of this condition require further characterization.
Accurate diagnosis is crucial to differentiate from other crystalline nephropathies.

Implications:

Increased awareness of triamterene crystalline nephropathy is needed among clinicians.
Further research into the pathogenesis and diagnosis of drug-induced crystalline nephropathy is warranted.
This can improve patient outcomes by enabling timely and accurate diagnosis and treatment.