Abstract
Objective To analyze the relationship between the genetic polymorphisms of uridinediphosphate glucuronosyltransferase 1A9 (UGT1A9) and mycophenolic acid (MPA)pharmacokinetics in Chinese kidney recipients.Methods Gene mutations (C-440T/T-331C,C-2152T,T-275A,T98C) were detected in 196 recipients by PCR-LDR.On the 28th day after transplantation,the plasma samples which were obtained at the time points of predose,0.5 h and 2 h after administration were measured by an immunoassay method (Emit Mycophenolic Acid Assay,Dade Behring).MPA-AUC0-12 was calculated based on these three data.Correlation between single nucleotide polymorphisms (SNPs) and MPA pharmacokinetics was analyzed.Results C-2152T,T-275A and T98C genotypes of UGT1A9 were not found in 196 recipients.The frequency of C-440T/T-331C gene mutation was 14.29% (28/196).The mean value of MPA-AUC0-12 was 40.6±11.8 wild genotype,respectively (P＞0.05).Conclusion C-2152T,T-275A and T98C genotypes of UGT1A9 are scarce in Chinese kidney recipients.In this study,there is no distinct relationship between -440/-331 SNPs and MPA pharmacokinetics in Chinese allograft recipients. Key words: Uridinediphosphate glucuronosyltransferase; Polymorphism,single nucleotide; Mycophenolic acid; Pharmacokinetics
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