Nephron. Clinical practice · 2005
Bezafibrates cause moderate, reversible impairment in renal function in patients without prior renal disease.
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Charach Gideon, Grosskopf Itamar, Rotmensch Heschi H, Kitzis Ilan, Weintraub Moshe
Аннотация
BACKGROUND/AIMS: To determine whether bezafibrates have adverse effects on renal function.
METHODS: (1) A 3-year retrospective survey of 526 patients who were on bezafibrate for a while and 614 controls following fluctuations of serum creatinine levels. (2) A prospective study on 33 patients with previous evidence of bezafibrate-induced elevation in serum creatinine. The patients were examined after 3 months on bezafibrate 400 mg/day and then after 3 months without bezafibrate. Eight patients repeated the tests after 3 months on bezafibrate 200 mg/day.
RESULTS: Retrospective: 295 bezafibrate-treated patients (56%) and 67 controls (11%) demonstrated fluctuations > or = 0.2 mg/dl in serum creatinine levels (p < 0.001); 113 patients (21%) and 16 controls (3%) showed fluctuations > or = 0.3 mg/dl (p < 0.001). Prospective: bezafibrate 400 mg/dl increased serum creatinine from 1.16 +/- 0.19 to 1.42 +/- 0.2 mg/dl (p < 0.001) and urea from 37 +/- 8 to 44 +/- 8 mg/dl (p < 0.001); creatinine clearance (Ccr) decreased from 104 +/- 23 to 82 +/- 27 ml/min (p < 0.001). CPK increased from 82 +/- 32 to 130 +/-58 mg/dl (p < 0.0001) and urinary myoglobin increased from 95.4 +/- 21 to 199 +/- 99 mg/dl (p < 0.0001). The 8 patients given bezafibrate 200 mg/dl experienced similar dose-dependent changes.
CONCLUSIONS: Bezafibrate causes quiet common, dose-dependent and reversible changes in serum creatinine in patients with normal renal function, associated with a significant increase in serum CPK and urine myoglobin, suggestive of drug-induced mild subclinical skeletal muscle injury compromising renal function.
METHODS: (1) A 3-year retrospective survey of 526 patients who were on bezafibrate for a while and 614 controls following fluctuations of serum creatinine levels. (2) A prospective study on 33 patients with previous evidence of bezafibrate-induced elevation in serum creatinine. The patients were examined after 3 months on bezafibrate 400 mg/day and then after 3 months without bezafibrate. Eight patients repeated the tests after 3 months on bezafibrate 200 mg/day.
RESULTS: Retrospective: 295 bezafibrate-treated patients (56%) and 67 controls (11%) demonstrated fluctuations > or = 0.2 mg/dl in serum creatinine levels (p < 0.001); 113 patients (21%) and 16 controls (3%) showed fluctuations > or = 0.3 mg/dl (p < 0.001). Prospective: bezafibrate 400 mg/dl increased serum creatinine from 1.16 +/- 0.19 to 1.42 +/- 0.2 mg/dl (p < 0.001) and urea from 37 +/- 8 to 44 +/- 8 mg/dl (p < 0.001); creatinine clearance (Ccr) decreased from 104 +/- 23 to 82 +/- 27 ml/min (p < 0.001). CPK increased from 82 +/- 32 to 130 +/-58 mg/dl (p < 0.0001) and urinary myoglobin increased from 95.4 +/- 21 to 199 +/- 99 mg/dl (p < 0.0001). The 8 patients given bezafibrate 200 mg/dl experienced similar dose-dependent changes.
CONCLUSIONS: Bezafibrate causes quiet common, dose-dependent and reversible changes in serum creatinine in patients with normal renal function, associated with a significant increase in serum CPK and urine myoglobin, suggestive of drug-induced mild subclinical skeletal muscle injury compromising renal function.