AI Article Synopsis
- Thai kidney transplant patients can achieve good outcomes with lower doses of mycophenolate, prompting a study on its pharmacokinetics and genetic factors affecting metabolism.
- The study involved 138 stable kidney transplant recipients taking a specific dosage of mycophenolate, measuring MPA concentrations at various times post-dosing, and analyzing genetic variations.
- Findings indicated that despite lower doses, most patients had therapeutic MPA levels, and genetic variations in UGT2B7 were linked to differences in MPA metabolism.
Article Abstract
Background: Despite use of a lower mycophenolate dose in Thai kidney transplant patients, acceptable graft and patient outcomes can be achieved. We therefore examined the pharmacokinetics of mycophenolic acid (MPA) by area under the curve (AUC) and investigated genetic contribution in mycophenolate metabolism in this population.
Methods: Kidney transplant recipients with stable graft function who were receiving mycophenolate mofetil 1,000 mg/d in combination with either cyclosporine or tacrolimus, and prednisolone were studied. The MPA concentration was measured by fluorescence polarization immunoassay (FPIA), at predose and 1, 1.5, 2, 4, 6, 8, 10, and 12 hours after dosing. Genetic polymorphisms in UGT1A8, UGT1A9, and UGT2B7 were examined by denaturing high-performance liquid chromatography (DHPLC)-based single-base extension (SBE) analysis.
Results: A total 138 patients were included in study. The mean AUC was 39.49 mg-h/L (28.39-89.58 mg-h/L), which was in the therapeutic range. The correlation between the predose MPA concentration and AUC was poor. The mean AUC in the tacrolimus group was higher than that in the cyclosporine group. Polymorphisms in UGT2B7 showed significant association with AUC.
Conclusion: Most of our patients with reduced mycophenolate dose had the AUC within the therapeutic range. Genetic polymorphisms in UGT2B7 may play a role in MPA metabolism in Thai kidney transplant patients.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270037 | PMC |
| http://dx.doi.org/10.2147/PGPM.S72760 | DOI Listing |
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