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自身免疫性疾病患者CYP3A4、CYP2C8和CYP3A5基因多态性与羟氯喹不良反应-血药浓度的相关性研究.docx

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    •     自身免疫性疾病患者CYP3A4、CYP2C8和CYP3A5基因多态性与羟氯喹不良反应/血药浓度的相关性研究    高贝贝 潘梦璐 杨春兰 宋帅 帅宗文 夏泉摘 要 目的:研究自身免疫性疾病(AID)患者細胞色素P450(CYP)酶的亚型CYP3A4、CYP2C8和CYP3A5的基因多态性与羟氯喹不良反应、血药浓度的相关性,为羟氯喹的临床个体化用药提供参考方法:病例来自安徽医科大学第一附属医院风湿免疫科2017年7月-2018年8月收治的因长期(>6个月)服用羟氯喹(日剂量为200~400 mg)出现不良反应的77例AID患者,收集患者信息、血样和不良反应发生情况,按不良反应发生部位分为肝功能正常组和肝功能异常组、肾功能正常组和肾功能异常组、眼部正常组和眼部异常组,采用高效液相色谱法测定羟氯喹全血药物浓度,MassARRAY系统检测患者CYP3A4、CYP2C8和CYP3A5的基因型,通过χ2检验分析不同基因型患者羟氯喹不良反应的发生差异,通过两独立样本t检验和单因素方差分析不同基因型患者羟氯喹血药浓度的差异结果:CYP3A5 rs4646453位点在肾功能正常组与肾功能异常组的分布差异具有统计学意义(P<0.05),肾功能异常组患者中CC基因型较AA+AC基因型的发生率高;CYP2C8 rs10882526位点在肝功能正常组与肝功能异常组的分布差异具有统计学意义(P<0.05),肝功能异常组患者中等位基因G较等位基因A的发生率高,AG基因型较AA基因型的发生率高。

      77例AID患者CYP3A4、CYP2C8和CYP3A5的基因多态性与血药浓度无显著相关性在亚组分析时,58例系统性红斑狼疮(SLE)患者中CYP2C8 rs10882521的GT、GG和TT基因型的平均血药浓度分别为514.1、735.3、785.9 ng/mL,其中GG和TT基因型明显高于GT基因型(P<0.05)结论:AID患者携带CYP3A5 rs4646453 CC基因型服用羟氯喹肾功能异常的发生率更高,携带CYP2C8 rs10882526位点的等位基因G和AG基因型服用羟氯喹肝功能异常的发生率更高SLE患者服用相同剂量羟氯喹,携带CYP2C8 rs10882521 GT基因型较其他基因型患者血药浓度低Key 自身免疫性疾;细胞色素P450;基因多态性;羟氯喹;不良反应;血药浓度Study on Relationship of CYP3A4,CYP2C8 and CYP3A5 Gene Polymorphism with ADR/Blood Concentration of Hydroxychloroquine in Patients with Autoimmune DiseaseGAO Beibei1,PAN Menglu2,YANG Chunlan1,SONG Shuai1,SHUAI Zongwen2,XIA Quan1(1.Dept. of Pharmacy, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China;2.Dept. of Rheumatology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China)ABSTRACT OBJECTIVE: To study the relationship of CYP3A4, CYP2C8 and CYP3A5 gene polymorphism with ADR/blood concentration of hydroxychloroquine in patients with autoimmune disease (AID), and to provide reference for individual medication of hydroxychloroquine. METHODS: Totally 77 AID patients,who were treated with hydroxychloroquine (daily dose of 200 mg to 400 mg) for a long-term (>6 months), were selected from the department of rheumatology and immunology, the First Affiliated Hospital of Anhui Medical University during Jul. 2017 to Aug. 2018. The information, blood sample and ADR of them were collected. Those patients were divided into normal liver function group, abnormal liver function group, normal renal function group, abnormal renal function group, normal eye group and abnormal eye group according to the site of ADR. The concentration of hydroxychloroquine was determined by HPLC. Genotype of CYP3A4, CYP2C8 and CYP3A5 were detected by MassARRAY microarray system. The differences of hydroxychloroquine-induced ADR in different genotypes were analyzed by χ2 test. The blood concentration difference of hydroxychloroquine in different genotypes were analyzed by independent sample t-test and one-way ANOVA. RESULTS: There was statistical significance in the distribution of CYP3A5 rs4646453 locus between normal renal function group and abnormal renal function group(P<0.05). The incidence of CC genotype was higher than that of AA+AC genotype in abnormal renal function group. There was statistical significance in the distribution of CYP2C8 rs10882526 locus between normal liver function group and abnormal liver function group(P<0.05). The incidence of allele G was higher than that of allele A in abnormal liver function group, and the incidence of AG genotype was higher than that of AA genotype. There was no significant correlation of the gene polymorphisms of CYP3A4, CYP2C8 and CYP3A5 with blood concentration among 77 AID patients. In subgroup analysis, blood concentration of GT, GG and TT genotypes of CYP2C8 rs10882521 in 58 patients with systemic lupus erythematosus (SLE) were 514.1,735.3 and 785.9 ng/mL, respectively; GG and TT genotypes were significantly higher than GT genotype (P<0.05). CONCLUSIONS: AID patients with CYP3A5 rs4646453 CC genotype have a higher incidence of renal dysfunction due to taking hydroxychloroquine; patients with CYP2C8 rs10882526 locus allele G and AG have a relatively high incidence of renal dysfunction due to taking hydroxychloroquine. When SLE patients taking the same dose of hydroxychloroquine, the blood concentration of hydroxychloroquine in patients carrying CYP2C8 rs10882521 GT genotype is lower than other genotypes.KEYWORDS Autoimmune disease; CYP; Gene polymorphism; Hydroxychloroquine; ADR; Blood concentration自身免疫性疾病(AID)是由于机体免疫系统紊乱,对自身抗原产生免疫反应,损害自身组织而引起的一类疾病,包括系统性红斑狼疮(SLE)及类风湿性关节炎(RA)等[1]。

      羟氯喹作为SLE的一线基础用药和RA治疗中改善病情的主要抗风湿药,随着其广泛应用,其有效性和安全性备受关注[2]羟氯喹半衰期长,药动学存在明显的个体差异,细胞色素P450(CYP)单加氧酶系中的2D6、3A4、3A5和2C8亚型参与羟氯喹在肝中代谢的过程,代谢酶的基因多态性可能是导致不同个体药物浓度差异和不良反应的重要决定因素[3-5]本研究通过测定服用6个月以上羟氯喹的AID患者的血药浓度及CYP3A4、CYP2C8、CYP3A5的基因型,以及收集患者服用羟氯喹后的不良反应,分析患者CYP3A4、CYP2C8、CYP3A5基因多态性与羟氯喹不良反应、血药浓度的关系,为羟氯喹的临床个体化用药提供参考1 资料来源与方法1.1 研究对象77例研究对象均为2017年6月-2018年8月在安徽医科大学第一附属医院风湿免疫科门诊因长期服用羟氯喹出现不良反应就诊患者,详细记录患者一般信息和用药信息1.1.1 纳入与排除标准 纳入标准:(1)症状符合RA和SLE相关诊断标准者[6-7],无相关药物禁忌;(2)口服羟氯喹治疗时间为6个月以上;(3)每日服药剂量为200~400 mg排除标准:(1)非SLE患者及RA患者;(2)妊娠期及哺乳期妇女;(3)资料不完全者;(4)依从性差患者;(5)使用羟氯喹治疗前发生过肝肾功能异常或眼部不良反应者。

      1.1.2 分组 羟氯喹不良反应包括肝肾功能异常、眼部不良反应、皮肤黏膜反应、消化道反应、心脏毒性等目前,在临床上观察到肝肾功能异常和眼部不良反应较为。

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