Importance of cytochrome P‐450IIIA activity in determining dosage and blood levels of FK 506 and cyclosporine in liver transplant recipients
Yilmaz Cakaloglu, J. Michael Tredger, John Devlin, Roger Williams – 1 August 1994 – We have investigated the importance of cytochrome P‐450IIIA enzyme activity in influencing dosage of the immunosuppressive drugs FK 506 and cyclosporine after liver transplantation. Cytochrome P‐450IIIA enzyme activity in vivo was measured 1 yr postoperatively in 37 stable orthotopic liver graft recipients (21 receiving FK 506 and 16 given cyclosporine) by the erythromycin breath test and the production of monoethylglycinexylidide from lignocaine.