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  • Title: Tacrolimus (FK506): the pros and cons of its use as an immunosuppressant in pediatric liver transplantation.
    Author: Cox KL, Freese DK.
    Journal: Clin Invest Med; 1996 Oct; 19(5):389-92. PubMed ID: 8889279.
    Abstract:
    Tacrolimus (FK506) is a new immunosuppressive agent that has recently been given to recipients of liver transplants. Multicentre studies conducted in the United States and Europe have reported that tacrolimus is superior to cyclosporine in preventing allograft rejection. The absorption of tacrolimus is independent of bile, and, therefore, therapeutic blood levels are usually achieved by taking oral preparations within 72 hours of liver transplantation. Compared with the use of cyclosporine, this regimen has resulted in shorter hospital stays and reduced costs. Tacrolimus does not cause hirsutism or gingival hyperplasia, which are common disfiguring complications of cyclosporine. Serious neurological side effects, lymphoproliferative disorders and hypertrophic cardiomyopathy have recently been reported in children taking high doses of tacrolimus. When lower doses of tacrolimus are used in primary immunosuppressive therapy, the incidence of neurological side effects and lymphoproliferative disorders of tacrolimus and cyclosporine have been reported to be similar. Hence, tacrolimus is a potent immunosuppressant that has many advantages over cyclosporine but must be used cautiously, since high doses have been associated with an increased incidence of lymphoproliferative disorders and cardiomyopathy.
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