PMID: 9193849Jun 1, 1997Paper

Clinical features of acute reversible tacrolimus (FK 506) nephrotoxicity in kidney transplant recipients

Clinical Transplantation
S R KatariP S Randhawa

Abstract

This study was designed to (a) estimate the contribution of tacrolimus nephrotoxicity to episodes of renal allograft dysfunction investigated by needle biopsy, (b) describe the temporal evolution of nephrotoxicity and its response to therapy, and (c) ascertain how often renal dysfunction is associated with concurrent extra-renal toxicity. Patients were selected based on a rising serum creatinine, normal ultrasound, and biopsy findings leading to a reduction in the dose of tacrolimus and a fall in serum creatinine. Twenty two (17%) cases of nephrotoxicity were identified amongst 128 consecutive kidney transplant biopsies with sufficient clinical data for analysis. There were 13 males and 9 females, 17-75 yr in age. Tacrolimus was administered initially as a 0.075-0.1 mg/kg/d IV continuous infusion followed by an oral dose of 0.15 mg/kg twice daily. The onset of nephrotoxicity in this study occurred 1-156 wk post-operatively. The mean baseline creatinine was 212.2 +/- 168.0 mumol/l (range 88.4-875.2) and rose 40.6% +/- 14.2% (range 11-66) during episodes of nephrotoxicity (p < 0.001). The highest recorded plasma and whole-blood tacrolimus levels during the toxic episodes were respectively 2.7 +/- 0.8 ng/ml (range 1.1-3.5) and 31....Continue Reading

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