Reversible membranous nephropathy associated with the use of nonsteroidal anti-inflammatory drugs.
OBJECTIVE
To investigate the frequency of membranous nephropathy associated with nonsteroidal anti-inflammatory drug (NSAID) use and identify associated clinical characteristics.


METHODS
Retrospective chart review.


METHODS
A large group practice that staffs 2 large teaching hospitals.


METHODS
All patients diagnosed as having stage I or early stage II membranous nephropathy by renal biopsy between January 1975 and May 1995.


METHODS
Nephrotic syndrome was said to be associated with NSAID use if patients developed nephrotic syndrome while taking an NSAID and if other causes of membranous nephropathy were excluded and a rapid remission of the nephrotic syndrome followed withdrawal of the drug.


RESULTS
Of 125 patients identified with early membranous nephropathy, 29 were taking NSAIDs at the time symptoms of nephrotic syndrome developed. Thirteen of these patients met the criteria for NSAID-associated membranous nephropathy. None of these patients had any evidence of renal insufficiency or significant proteinuria after follow-up periods ranging from 5 months to 13 years. In addition to diclofenac and fenoprofen, which have previously been implicated, ibuprofen, nabumetone, naproxen, and tolmetin were found to be associated.


CONCLUSIONS
Nephrotic syndrome due to membranous nephropathy should be recognized as an idiosyncratic drug reaction to many NSAIDS. Because withdrawal of the drug may result in prompt and complete recovery of normal renal function, a history of NSAID intake should be sought in patients with membranous nephropathy.
Radford
M G
MG
Mayo Graduate School of Medicine, Mayo Clinic and Mayo Foundation, Rochester, Minn 55905, USA.
Holley
K E
KE
Grande
J P
JP
Larson
T S
TS
Wagoner
R D
RD
Donadio
J V
JV
McCarthy
J T
JT
D000328:Adult; D000368:Aged; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects*; D001706:Biopsy; D004008:Diclofenac / Q000009:adverse effects; D005260:Female; D015433:Glomerulonephritis, Membranous / Q000139:chemically induced* / Q000453:epidemiology / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D011507:Proteinuria; D012075:Remission, Spontaneous; D051437:Renal Insufficiency; D012189:Retrospective Studies; D014046:Tolmetin / Q000009:adverse effects
D000894:Anti-Inflammatory Agents, Non-Steroidal; D004008:Diclofenac; D014046:Tolmetin