Conversion from cyclosporine to tacrolimus results in improved creatinine but does not alter lipid profile

Introduction. While cyclosporine and tacrolimus use results in similar renal graft survival, the side effect profiles of the drugs are substantially different. We examined the electrolyte and lipid alterations that occurred in our patient population following conversion from cyclosporine to tacrolimus. Methods. Data for electrolytes, lipid profile, and immunosuppression were analyzed from 98 patients with kidney or kidney-pancreas transplants who were converted from cyclosporine to tacrolimus between October 1994 and June 2001. Results, expressed as mean ± SEM, were compared to baseline values using the Wilcoxon signed-rank test (P <. 05 considered significant). Results. Among these patients, there were 56 men, 42 women, 75 primary transplants, 15 repeat transplants, and 26 multiorgan transplants. The mean time to tacrolimus conversion was 769 ± 122 days. Creatinine, BUN, and glucose improved after conversion to tacrolimus. Surprisingly, cholesterol, low-density lipoproteins, and high-density lipoproteins levels were not significantly altered, although triglyceride levels demonstrated a significant difference at 1 year. Conclusion. Significant improvements in creatinine and BUN were observed following conversion from cyclosporine to tacrolimus. While hypomagnesemia was also seen, there was surprisingly little alteration in lipid profile.