目的评估CYP3A4*1G多态性对行腹腔镜结肠癌根治术患者芬太尼剂量的影响。方法选取2018年7月—2020年4月复旦大学附属中山医院行芬太尼麻醉腹腔镜结肠癌根治术的患者101例,检测其CYP3A4*1G基因型。采用多重线性回归分析探讨CYP3A4*1G多...目的评估CYP3A4*1G多态性对行腹腔镜结肠癌根治术患者芬太尼剂量的影响。方法选取2018年7月—2020年4月复旦大学附属中山医院行芬太尼麻醉腹腔镜结肠癌根治术的患者101例,检测其CYP3A4*1G基因型。采用多重线性回归分析探讨CYP3A4*1G多态性与芬太尼剂量之间的关系。结果多重线性回归分析结果显示,年龄、术中芬太尼剂量和CYP3A4*1G、CYP3A5*3、OPRM1 A118G多态性是麻醉后复苏观察室(PACU)芬太尼剂量的影响因素(P<0.05)。校正年龄、性别、体重、身高、术中芬太尼用量、手术时间和OPRM1 A118G、CYP3A5*3、COMT V158M多态性后,CYP3A4*1G野生型(*1*1型)患者PACU芬太尼剂量较CYP3A4*1G突变型[*1*1G型(杂合型)和*1G*1G(纯合型)]患者增加13.99μg[β=-13.99,95%可信区间(CI)为-6.78~-1.20,P=0.035],CYP3A4*1G多态性与术后24 h镇痛泵自控静脉镇痛(PCIA)芬太尼剂量无关(β=-7.79,95%CI为-33.70~-18.11,P=0.557),与术后48 h PCIA芬太尼剂量也无关(β=-10.28,95%CI为-22.70~2.15,P=0.108)。与CYP3A4*1G野生型(*1*1型)患者比较,CYP3A4*1G突变型[*1*1G型(杂合型)和*1G*1G(纯合型)]患者PACU和术后24 h PCIA芬太尼剂量显著降低(P<0.05)。结论CYP3A4*1G多态性是PACU芬太尼剂量的独立影响因素。相对于野生型患者,突变型患者消耗较少剂量芬太尼即可获得相似的麻醉效果。展开更多
目的:探讨CYP3A4*1G增强CYP3A4基因表达的负调控作用。方法:设计合成包含CYP3A4*1G G或A等位基因的一系列基因片段(外显子10与内含子10交界处287和181 bp),构建CYP3A4*1G正向位于CYP3A4启动子上游的荧光素酶报告基因载体,与内参质粒pRL...目的:探讨CYP3A4*1G增强CYP3A4基因表达的负调控作用。方法:设计合成包含CYP3A4*1G G或A等位基因的一系列基因片段(外显子10与内含子10交界处287和181 bp),构建CYP3A4*1G正向位于CYP3A4启动子上游的荧光素酶报告基因载体,与内参质粒pRL-TK共转染Hep G2细胞,通过双荧光素酶报告基因系统检测荧光素酶活性。结果:与CYP3A4启动子相比较,G与A等位基因在287 bp DNA片段中均降低了荧光素酶表达(F=795.575,P<0.001),且G与A等位基因对CYP3A4启动子活性的抑制程度比较差异无统计学意义(P>0.05)。与CYP3A4启动子相比较,G与A等位基因在181 bp DNA片段中均降低了荧光素酶表达(F=23.218,P<0.001),而G与A等位基因对CYP3A4启动子活性的抑制程度比较差异无统计学意义(P>0.05)。结论:在CYP3A4内含子10与外显子10交界处CYP3A4*1G存在与CYP3A4*1G变异无关的CYP3A4启动子的抑制元件,该抑制元件对CYP3A4*1G增强CYP3A4基因表达起负调控作用。展开更多
目的探讨CYP3A4内含子10及其内SNP CYP3A4*1G对CYP3A4基因表达的调控作用.方法构建CYP3A4启动子启动转录的CYP3A4真核表达质粒,将CYP3A4内含子10(CYP3A4*1G野生型/突变型)正向或反向插入该质粒的启动子上游,从而构建出不同基因型、不同...目的探讨CYP3A4内含子10及其内SNP CYP3A4*1G对CYP3A4基因表达的调控作用.方法构建CYP3A4启动子启动转录的CYP3A4真核表达质粒,将CYP3A4内含子10(CYP3A4*1G野生型/突变型)正向或反向插入该质粒的启动子上游,从而构建出不同基因型、不同方向的CYP3A4内含子10调控的CYP3A4真核表达质粒.将构建好的各质粒分别转染入Hep G2细胞,应用实时荧光定量PCR方法检测CYP3A4 m RNA表达水平.结果构建的重组质粒经酶切验证与测序鉴定,插入片段的序列和方向与预期完全一致.无论CYP3A4*1G野生型还是突变型,反向组CYP3A4 m RNA表达水平均高于正向组(P<0.01);而CYP3A4内含子10无论是正向还是反向,CYP3A4*1G野生型组CYP3A4 m RNA表达水平均高于突变型组(P<0.01).此外,正向突变组CYP3A4 m RNA表达水平低于阳性对照组,不但没有增强CYP3A4启动子的转录作用反而有所减弱.结论CYP3A4内含子10有类似于增强子的功能,能够影响CYP3A4启动子对CYP3A4基因的转录,且具有方向性和CYP3A4*1G等位基因依赖性.展开更多
Background Cyclosporin A (CsA) is a substrate of both cytochrome P450 3A (CYP3A) and P-glycoprotein (P-gp), some of the single nucleotide polymorphisms (SNPs) in these genes are associated with interindividual...Background Cyclosporin A (CsA) is a substrate of both cytochrome P450 3A (CYP3A) and P-glycoprotein (P-gp), some of the single nucleotide polymorphisms (SNPs) in these genes are associated with interindividual variations in CsA pharmacokinetics. We studied the influence of these SNPs on the incidence of rejection and CsA nephrotoxicity, as well as pneumonia within one year after renal transplant and post-transplantation diabetes mellitus (PTDM), in order to find whether genetic evaluation may help to identify patients at risk and to modulate CsA therapy to optimize graft and patient outcomes. Methods A total of 208 renal transplant recipients receiving CsA were genotyped for ABCB1 (C1236T, G2677T/A, and C3435T), CYP3A4*IG, and CYP3A5*3 by direct sequencing method. Retrospective case control study was utilized to identify the association between CYP3A4*IG, CYP3A5*3, ABCB1 genetic polymorphisms and CsA-related outcomes. Results The patients with a CYP3A4*1G/*1G genotype were found to have a higher incidence of acute rejection compared with those with CYP3A4*1/*1. Conclusion CYP3A4*1G/*1G genotype predict increased risk of acute rejection, so genetic evaluation may partly help to identify patients at risk and to modulate CsA therapy to optimize graft and patient outcomes.展开更多
文摘目的评估CYP3A4*1G多态性对行腹腔镜结肠癌根治术患者芬太尼剂量的影响。方法选取2018年7月—2020年4月复旦大学附属中山医院行芬太尼麻醉腹腔镜结肠癌根治术的患者101例,检测其CYP3A4*1G基因型。采用多重线性回归分析探讨CYP3A4*1G多态性与芬太尼剂量之间的关系。结果多重线性回归分析结果显示,年龄、术中芬太尼剂量和CYP3A4*1G、CYP3A5*3、OPRM1 A118G多态性是麻醉后复苏观察室(PACU)芬太尼剂量的影响因素(P<0.05)。校正年龄、性别、体重、身高、术中芬太尼用量、手术时间和OPRM1 A118G、CYP3A5*3、COMT V158M多态性后,CYP3A4*1G野生型(*1*1型)患者PACU芬太尼剂量较CYP3A4*1G突变型[*1*1G型(杂合型)和*1G*1G(纯合型)]患者增加13.99μg[β=-13.99,95%可信区间(CI)为-6.78~-1.20,P=0.035],CYP3A4*1G多态性与术后24 h镇痛泵自控静脉镇痛(PCIA)芬太尼剂量无关(β=-7.79,95%CI为-33.70~-18.11,P=0.557),与术后48 h PCIA芬太尼剂量也无关(β=-10.28,95%CI为-22.70~2.15,P=0.108)。与CYP3A4*1G野生型(*1*1型)患者比较,CYP3A4*1G突变型[*1*1G型(杂合型)和*1G*1G(纯合型)]患者PACU和术后24 h PCIA芬太尼剂量显著降低(P<0.05)。结论CYP3A4*1G多态性是PACU芬太尼剂量的独立影响因素。相对于野生型患者,突变型患者消耗较少剂量芬太尼即可获得相似的麻醉效果。
文摘目的:探讨CYP3A4*1G增强CYP3A4基因表达的负调控作用。方法:设计合成包含CYP3A4*1G G或A等位基因的一系列基因片段(外显子10与内含子10交界处287和181 bp),构建CYP3A4*1G正向位于CYP3A4启动子上游的荧光素酶报告基因载体,与内参质粒pRL-TK共转染Hep G2细胞,通过双荧光素酶报告基因系统检测荧光素酶活性。结果:与CYP3A4启动子相比较,G与A等位基因在287 bp DNA片段中均降低了荧光素酶表达(F=795.575,P<0.001),且G与A等位基因对CYP3A4启动子活性的抑制程度比较差异无统计学意义(P>0.05)。与CYP3A4启动子相比较,G与A等位基因在181 bp DNA片段中均降低了荧光素酶表达(F=23.218,P<0.001),而G与A等位基因对CYP3A4启动子活性的抑制程度比较差异无统计学意义(P>0.05)。结论:在CYP3A4内含子10与外显子10交界处CYP3A4*1G存在与CYP3A4*1G变异无关的CYP3A4启动子的抑制元件,该抑制元件对CYP3A4*1G增强CYP3A4基因表达起负调控作用。
文摘目的探讨CYP3A4内含子10及其内SNP CYP3A4*1G对CYP3A4基因表达的调控作用.方法构建CYP3A4启动子启动转录的CYP3A4真核表达质粒,将CYP3A4内含子10(CYP3A4*1G野生型/突变型)正向或反向插入该质粒的启动子上游,从而构建出不同基因型、不同方向的CYP3A4内含子10调控的CYP3A4真核表达质粒.将构建好的各质粒分别转染入Hep G2细胞,应用实时荧光定量PCR方法检测CYP3A4 m RNA表达水平.结果构建的重组质粒经酶切验证与测序鉴定,插入片段的序列和方向与预期完全一致.无论CYP3A4*1G野生型还是突变型,反向组CYP3A4 m RNA表达水平均高于正向组(P<0.01);而CYP3A4内含子10无论是正向还是反向,CYP3A4*1G野生型组CYP3A4 m RNA表达水平均高于突变型组(P<0.01).此外,正向突变组CYP3A4 m RNA表达水平低于阳性对照组,不但没有增强CYP3A4启动子的转录作用反而有所减弱.结论CYP3A4内含子10有类似于增强子的功能,能够影响CYP3A4启动子对CYP3A4基因的转录,且具有方向性和CYP3A4*1G等位基因依赖性.
文摘Background Cyclosporin A (CsA) is a substrate of both cytochrome P450 3A (CYP3A) and P-glycoprotein (P-gp), some of the single nucleotide polymorphisms (SNPs) in these genes are associated with interindividual variations in CsA pharmacokinetics. We studied the influence of these SNPs on the incidence of rejection and CsA nephrotoxicity, as well as pneumonia within one year after renal transplant and post-transplantation diabetes mellitus (PTDM), in order to find whether genetic evaluation may help to identify patients at risk and to modulate CsA therapy to optimize graft and patient outcomes. Methods A total of 208 renal transplant recipients receiving CsA were genotyped for ABCB1 (C1236T, G2677T/A, and C3435T), CYP3A4*IG, and CYP3A5*3 by direct sequencing method. Retrospective case control study was utilized to identify the association between CYP3A4*IG, CYP3A5*3, ABCB1 genetic polymorphisms and CsA-related outcomes. Results The patients with a CYP3A4*1G/*1G genotype were found to have a higher incidence of acute rejection compared with those with CYP3A4*1/*1. Conclusion CYP3A4*1G/*1G genotype predict increased risk of acute rejection, so genetic evaluation may partly help to identify patients at risk and to modulate CsA therapy to optimize graft and patient outcomes.