© 1991 British Society for Rheumatology
brief-report |
NO EFFECT OF MISOPROSTOL ON RENAL FUNCTION OF RHEUMATOID PATIENTS TREATED WITH DICLOFENAC




*Departments of Rheumatology, University Hospital Leiden The Netherlands
Departments of Diagnostic Radiology, University Hospital Leiden The Netherlands
Departments of Nephrology, University Hospital Leiden The Netherlands
Correspondence to:
Correspondence to Dr M. Boers, Department of Internal Medicine/Rheumatology, University Hospital, P.O. Box 1918, 6201 BX Maastricht, The Netherlands
Non-steroidal anti-inflammatory drugs can reversibly decrease renal function in patients with rheumatoid arthritis (RA). To test whether orally administered prostaglandins could mitigate this decrease, we studied the effect of misoprostol in 24 RA patients during treatment with diclofenac in a randomized, placebo-controlled crossover trial. At baseline, 21 patients had a creatinine clearance below 80 ml/min/1.73 m2 The two treatment phases (with either misoprostol, 600 µg daily, or matching placebo tablets) were separated by a washout phase in which diclofenac (150 mg daily) was continued. After treatment with misoprostol/diclofenac the glomerular filtration rate was 72±5 ml/min (mean±standard error), and the effective renal plasma flow was 295±21 ml/min. After treatment with placebo/diclofenac, the corresponding values were 71±5 ml/min and 296±21 ml/min, respectively.
We concluded that misoprostol has no effect on the renal function of RA patients treated with diclofenac.
KEY WORDS: Prostaglandin E, Misoprostol, Non-steroidal anti-inflammatory drugs, Diclofenac, Rheumatoid arthritis, Kidney function tests, Renal failure