title: Spontaneous relapse of naproxen-related nephrotic syndrome.
abstract: A number of nonsteroidal anti-inflammatory drugs cause nephrotoxicity characterized by nephrotic syndrome, usually with acute renal insufficiency. Remission of proteinuria and renal insufficiency after discontinuation of nonsteroidal anti-inflammatory drug therapy is characteristic. Relapse of nephrotic syndrome in the absence of nonsteroidal anti-inflammatory drug rechallenge has not previously been reported. Nephrotic syndrome developed in an 80-year-old woman taking naproxen, and remitted after discontinuation of the drug. Nephrotic syndrome relapsed four months later without re-exposure to naproxen or other nonsteroidal anti-inflammatory drugs. Renal biopsy at that time revealed minimal-change disease. The relationship between these two episodes of nephrotic syndrome is discussed with regard to possible pathogenetic mechanisms.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007668:Kidney / Q000473:pathology / Q000648:ultrastructure; D009288:Naproxen / Q000009:adverse effects*; D009402:Nephrosis, Lipoid / Q000473:pathology; D009404:Nephrotic Syndrome / Q000139:chemically induced* / Q000473:pathology; D011507:Proteinuria / Q000652:urine; D012008:Recurrence; D013997:Time Factors
chemical_list: D009288:Naproxen