title: Pharmacokinetics of mycophenolic acid in live donor liver transplant patients vs deceased donor liver transplant patients.
abstract: The exposure of mycophenolic acid in live donor liver transplant patients (those receiving a partial hepatic volume) in comparison to deceased donor liver transplant patients (those receiving the whole hepatic volume) after administration of mycophenolate mofetil has not been reported earlier. The aim of the present study is to compare the pharmacokinetics parameters of mycophenolic acid and mycophenolic acid glucuronide in live donor liver transplant patients versus deceased donor liver transplant patients. Twelve live donor liver transplant and 12 deceased donor liver transplant recipients were studied over a dosing interval after intravenous administration of mycophenolate mofetil. The maximum concentration (Cmax) and the area under the plasma concentration versus time curve (AUC) for mycophenolic acid in live donor liver transplant patients were significantly higher than in deceased donor liver transplant patients (Cmax/AUC: live donor liver transplant patients: 16.1 +/- 6.6 microg/mL/43.9 +/- 12.6 microg/mL.h vs deceased donor liver transplant patients: 10.7 +/- 2.0 microg/mL/28.9 +/- 7.1 microg/mL.h; P = .046/.002). The volume of distribution was higher in the deceased donor liver transplant patients compared with live donor liver transplant patients. However, the mean plasma concentration at 12 hours (Clast), drug disposition rate constant, half-life (t 1/2), and mean residence time were similar in both groups. The mean plasma concentration of mycophenolic acid glucuronide was 1.4 to 2.0 times higher in deceased donor liver transplant patients compared with live donor liver transplant patients. These observations point to the need to use a lower dosage (approximately 30%) of mycophenolate mofetil in live donor liver transplant patients compared with deceased donor liver transplant patients.
authors.affiliation: University of Rochester Medical Center, Department of Surgery, Division of Solid Organ Transplantation, Rochester, NY 14642, USA. ashok_jain@urmc.rochester.edu
authors.forename: Ashok
authors.initials: A
authors.lastname: Jain
authors.forename: Raman
authors.initials: R
authors.lastname: Venkataramanan
authors.forename: Rajeev
authors.initials: R
authors.lastname: Sharma
authors.forename: Tai
authors.initials: T
authors.lastname: Kwong
authors.forename: Peter
authors.initials: P
authors.lastname: Abt
authors.forename: Mark
authors.initials: M
authors.lastname: Orloff
authors.forename: Randeep
authors.initials: R
authors.lastname: Kashyap
authors.forename: Georgious
authors.initials: G
authors.lastname: Tsoulfas
authors.forename: Adel
authors.initials: A
authors.lastname: Bozorgzadeh
mesh_terms: D019540:Area Under Curve; D004305:Dose-Response Relationship, Drug; D004791:Enzyme Inhibitors / Q000008:administration & dosage / Q000493:pharmacokinetics; D005260:Female; D020719:Glucuronides / Q000008:administration & dosage / Q000097:blood / Q000493:pharmacokinetics; D006801:Humans; D007166:Immunosuppressive Agents / Q000008:administration & dosage / Q000493:pharmacokinetics / Q000627:therapeutic use; D007275:Injections, Intravenous; D008107:Liver Diseases / Q000378:metabolism / Q000601:surgery; D016031:Liver Transplantation / Q000379:methods*; D019520:Living Donors; D008297:Male; D008657:Metabolic Clearance Rate; D008875:Middle Aged; D009173:Mycophenolic Acid / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000097:blood / Q000493:pharmacokinetics* / Q000494:pharmacology; D011184:Postoperative Period; D011446:Prospective Studies; D014019:Tissue Donors
chemical_list: D004791:Enzyme Inhibitors; D020719:Glucuronides; D007166:Immunosuppressive Agents; C113145:mycophenolic acid glucuronide; D009173:Mycophenolic Acid