实用器官移植电子杂志 ›› 2013, Vol. 1 ›› Issue (1): 35-39.

• 论著 • 上一篇    下一篇

CYP3A5 基因多态性与肾移植受者术后早期他克莫司个体化应用的研究

王毅,赵闻雨,张雷,曾力,朱有华
  

  1. 第二军医大学长征医院器官移植中心,解放军器官移植研究所,上海 200003
  • 出版日期:2013-01-20 发布日期:2021-04-20

Effect of CYP3A5 genotype on concentration and efficacy of tacrolimus in early period after kidneytransplantation

WANG Yi,ZHAO Wen-yu,ZHANG Lei,ZENG Li,ZHU You-hua.
  

  1. Organ Transplantation Institute of PLA,Changzheng Hospital,Second Military Medical University,Shanghai 200003,China
  • Online:2013-01-20 Published:2021-04-20

摘要:

目的 观察 CYP3A5 基因多态性对肾移植受者术后早期他克莫司(tacrolimus,Tac)浓度 / 剂量比值(blood drug concentration/dose,C/D)的影响,探讨适合不同基因型受者的 Tac 起始剂量。方法 按CYP3A5 基因型将 157 例肾移植受者分为表达组(CYP3A5*1/*1 型和 CYP3A5*1/*3 型患者,72 例)、不表达组(CYP3A5*3/*3 型患者,85 例)。比较不同基因型患者之间术后 Tac C/D 比值、急性排斥反应与药物不良反应的发生率;记录不同基因型患者起始 Tac 剂量及达到肾移植术后早期有效目标药物浓度(7~14 μg/L)的间隔时间。结果 CYP3A5 表达组患者术后 7、14、30 天的 C/D 比值均低于不表达组(均 P<0.05),术后 1 个月组间急性排斥反应发生率差异无统计学意义(P>0.05),而不表达组药物不良反应发生率高于表达组(P<0.05);表达组及不表达组患者术后起始剂量无明显差异(分别为 0.129、0.132 mg/kg,P>0.05)。但表达组患者达到目标浓度时间较不表达患者明显缩短(P<0.05)。结论 受 CYP3A5 基因多态性影响,*1/*1 和 *1/*3 型患者早期要达到目标血药浓度,需提高该组患者的起始用药剂量,而 *3/*3 型患者则应适当降低起始剂量。根据 CYP3A5 基因多态性作为 Tac 个体化用药的依据,可以减少早期急性排斥反应及不良反应发生率,提高肾移植的临床效果。

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Abstract:

Objective To investigate the role of polymorphism of cytochrome P450 CYP3A5 in determinationof initial tacrolimus(Tac)dosages and the influence on blood drug concentrations/dose(C/D)in early period afterrenal transplantation. Methods 157 patients transplanted with cadaver kidney were divided into expresser group(*1/*1 and *1/*3,n=72),non-expresser group(*3/*3,n=85)according to the CYP3A5 genotype. The Tac C/Dratio,the incidence of acute rejection and adverse reaction were compared between two groups. The initial dosage ofTac and the time needed to achieve first target tacrolimus blood concentration(7-14 μg/L)after transplantation in allof the different genotype patients were recorded. Results At 7,14 and 30 days after transplantation,the C/D ratioin the non-expresser group was significantly higher than that in the expresser group(all P<0.05);the difference ofthe ratio of acute rejection between two groups within 1 month was not significant(P>0.05);the adverse effects ofTac were increased in non-expresser group compared with expresser group within 1 month(P<0.05). The differenceof initial dosage of Tac between two group was not statistically significant(0.129,0.132 mg/kg respectively,P>0.05).However,the time needed to achieve first target TBC in expresser group was shorter than that in non-expresser(P<0.05). Conclusions To achieve target TBC rapidly and reduce the ratio of acute rejection and adverseeffects,the initial dosage of Tac for CYP3A5 *1/*1 & *1/*3 needs to be increased,and for CYP3A5 *3/*3 needs tobe decreased. Determined the initial dosage of Tac by CYP3A5 genotype is a way to reduce the ratio of acute rejectionand adverse effects of Tac and enhances the clinical effect of kidney transplantation.

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