目的分析不同民族缺血性卒中患者对基于快速细胞色素P450酶家族2亚家族C成员19(cytochrome P450 family 2 subfamily C member 19,CYP2C19)基因检测指导抗血小板治疗方案的反应差异。方法前瞻性连续纳入2023年1—7月在南宁市第三人民医...目的分析不同民族缺血性卒中患者对基于快速细胞色素P450酶家族2亚家族C成员19(cytochrome P450 family 2 subfamily C member 19,CYP2C19)基因检测指导抗血小板治疗方案的反应差异。方法前瞻性连续纳入2023年1—7月在南宁市第三人民医院住院治疗的汉族(对照组)和壮族(试验组)非心源性轻型缺血性卒中患者。所有患者在CYP2C19基因检测结果指导下进行抗血小板治疗:对于基因表型为氯吡格雷快代谢的患者,抗血小板药物选择硫酸氢氯吡格雷;对于中间代谢或慢代谢的患者,抗血小板药物选择阿司匹林肠溶片或替格瑞洛片。随访90 d,记录mRS评分、日常生活能力量表(activity of daily living scale,ADL)评分、NIHSS评分以及90 d缺血性卒中累积复发率。结果共纳入1036例缺血性卒中患者,对照组743例,CYP2C19基因检测结果显示,氯吡格雷快代谢、中间代谢、慢代谢型患者分别为299例(40.24%)、345例(46.43%)和99例(13.32%)。试验组293例,氯吡格雷快代谢、中间代谢、慢代谢型患者分别为107例(36.52%)、161例(54.95%)和25例(8.53%)。两组不同CYP2C19基因表型的比例差异无统计学意义。随访90 d,两组间的mRS评分、ADL评分、NI HSS评分差异无统计学意义。对照组和试验组的90 d缺血性卒中累积复发率分别为5.52%(41/743)和5.12%(15/293),差异无统计学意义。结论基于CYP2C19基因检测指导的抗血小板治疗在汉族和壮族的缺血性卒中患者人群中,预防缺血性卒中复发的效果相似。展开更多
本文报道了一例老年女性院内卒中患者的临床诊疗过程。该患者于肛肠外科手术后2 d突发急性缺血性卒中,经影像学检查确诊为右侧颈内动脉起始部重度狭窄。在接受了1个月的卒中二级预防药物治疗后,择期行血管内治疗。术前该患者进行了快速...本文报道了一例老年女性院内卒中患者的临床诊疗过程。该患者于肛肠外科手术后2 d突发急性缺血性卒中,经影像学检查确诊为右侧颈内动脉起始部重度狭窄。在接受了1个月的卒中二级预防药物治疗后,择期行血管内治疗。术前该患者进行了快速细胞色素P450酶家族2亚家族C成员19(cytochrome P450 family 2 subfamily C member 19,CYP2C19)基因检测,结果为中间代谢型,提示应用氯吡格雷的效果可能不佳。基于这一检测结果调整抗血小板治疗方案,选择替格瑞洛联合阿司匹林作为替代治疗。治疗后,患者病情稳定,预后较好。本病例报道提示,在非轻型卒中患者中,快速CYP2C19基因检测可帮助选择抗血小板治疗策略,改善患者预后。展开更多
目的建立TaqMan-MGB探针检测CYP2C19基因*2、*3和*17三个多态性位点的方法。方法针对CYP2C19基因*2、*3和*17位点设计合成相应引物及双标记探针。选取2021年3月至2022年6月贵州省人民医院心内科门诊已知基因型的剩余全血样本42例,覆盖...目的建立TaqMan-MGB探针检测CYP2C19基因*2、*3和*17三个多态性位点的方法。方法针对CYP2C19基因*2、*3和*17位点设计合成相应引物及双标记探针。选取2021年3月至2022年6月贵州省人民医院心内科门诊已知基因型的剩余全血样本42例,覆盖每个位点的每个基因型各10例,提取DNA进行聚合酶链反应(PCR)检测,产物进行电泳和Sanger法测序分析。加样1、10、100、800 ng DNA,进行PCR检测以评价灵敏度。每个位点的每个基因型5例,每周1次对其检测,连续3周,以评价重复性。结果设计的引物扩增出目的基因片段,电泳显示明亮的单一的DNA条带;90个基因型的PCR结果与测序结果完全一致(P>0.05);不同加样量PCR法均可准确判读基因型,所有基因型在1 ng水平的Ct值均<34。同一基因型3次重复检测的结果一致。结论本研究成功建立了TaqMan-MGB探针检测CYP2C19基因*2、*3和*17三个多态性位点的方法,具有快速、准确、灵敏、简便的特点。展开更多
AIM: To investigate the association between cytochrome P450 2C19 (CYP2C19) gene polymorphism and cancer susceptibility by genotyping of CYP2C19 poor metabolizers (PMs) in cancer patients.METHODS: One hundred and thirt...AIM: To investigate the association between cytochrome P450 2C19 (CYP2C19) gene polymorphism and cancer susceptibility by genotyping of CYP2C19 poor metabolizers (PMs) in cancer patients.METHODS: One hundred and thirty-five cases of esophagus cancer, 148 cases of stomach cancer, 212 cases of lung cancer, 112 cases of bladder cancer and 372 controls were genotyped by allele specific amplification-polymerase chain reaction (ASA-PCR) for CYP2C19 PMs. The frequencies of PMs in cancer groups and control group were compared.RESULTS: The frequencies of PMs of CYP2C19 were 34.1% (46/135) in the group of esophagus cancer patients, 31.8% (47/148) in the stomach cancer patients, 34.4%(73/212) in the group of lung cancer patients, only 4.5%(5/112) in the bladder cancer patients and 14.0%(52/372) in control group.There were statistical differences between the cancer groups and control group (esophagus cancer, X^2=25.65, P<0.005,OR=-3.18, 95%C/=2.005-5.042, stomach cancer, X^2=21.70,P<0.005, OR=2.86, 95%CI=1.820-4.501; lung cancer,X^2=33.58, P<0.005, OR=-3.23, 95%C/=1.503-6.906; bladder cancer, X^2=7.50, P<0.01, OR=-0.288, 95%C/=0.112-0.740).CONCLUSION: CYP2C19 PMs have a high incidence of esophagus cancer, stomach cancer and lung cancer, conversely they have a low incidence of bladder cancer. It suggests that CYP2C19 may participate in the activation of procarcinogen of esophagus cancer, stomach cancer and lung cancer, but may involve in the detoxification of carcinogens of bladder cancer.展开更多
Objectives Clopidogrel is a prodrug that has to be converted to an active metabolite by hepatic cytochrome P450(CYP) isoenzymes to inhibit platelet aggregation.Individualvariability of platelet inhibition by clopidogr...Objectives Clopidogrel is a prodrug that has to be converted to an active metabolite by hepatic cytochrome P450(CYP) isoenzymes to inhibit platelet aggregation.Individualvariability of platelet inhibition by clopidogrel suggests a possibility for genetic factors having a significant influence on clopidogrel responsiveness.In this study,we sought to determine the association between the single nucleotide polymorphism of CYP 2C19 681G】A and the occurrence of clopidogrel resistance(CR) in Chinese.Methods The study enrolled 614 hospitalized patients who underwentsuccessful percutaneouscoronary intervention with drug-eluting stents were received the treatmentwith dual antiplatelet regimen(aspirin plus clopidogrel).All patients received loading doses of 600 mg clopidogrel and 300 mg aspirin.20μmol/L ADP-induced platelet aggregation ratio(PAR ) was assessed 24 h after clopi- dogrel administration.The maximum residual PAR≥70%was defined as CR.Genomic DNA was extracted from whole blood samples according to standard protocols,the single nucleotide polymorphism of the CYP2C19 681G】A was genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in all the patients.Results CR was found in 126 patients(20.5%).There was CYP2C19 681G】A polymorphism in the study population.The frequencies of the three kinds of genotypes(GG,GA,A A) in CR group and non-CR (NCR)group were 32.5%,47.6%,19.8%and 48.0%, 45.0%,7.0%,respectively.The frequency of AA genotype was significantly higher in NCR group than that in CR group (OR =3.03,95%CI:1.889～5.784,P=0.003).The A allele carriers were more likely to develop clopidogrel resistance compared with that of G allele carriers(OR=1.85,95%CI: 1.392～2.459,P=0.002).Conclusions CYP2C19 681G/A polymorphism is associated with the risk of CR,and the A allele carriers may be a possible genetic susceptibility factor for patients with CR.展开更多
文摘目的分析不同民族缺血性卒中患者对基于快速细胞色素P450酶家族2亚家族C成员19(cytochrome P450 family 2 subfamily C member 19,CYP2C19)基因检测指导抗血小板治疗方案的反应差异。方法前瞻性连续纳入2023年1—7月在南宁市第三人民医院住院治疗的汉族(对照组)和壮族(试验组)非心源性轻型缺血性卒中患者。所有患者在CYP2C19基因检测结果指导下进行抗血小板治疗:对于基因表型为氯吡格雷快代谢的患者,抗血小板药物选择硫酸氢氯吡格雷;对于中间代谢或慢代谢的患者,抗血小板药物选择阿司匹林肠溶片或替格瑞洛片。随访90 d,记录mRS评分、日常生活能力量表(activity of daily living scale,ADL)评分、NIHSS评分以及90 d缺血性卒中累积复发率。结果共纳入1036例缺血性卒中患者,对照组743例,CYP2C19基因检测结果显示,氯吡格雷快代谢、中间代谢、慢代谢型患者分别为299例(40.24%)、345例(46.43%)和99例(13.32%)。试验组293例,氯吡格雷快代谢、中间代谢、慢代谢型患者分别为107例(36.52%)、161例(54.95%)和25例(8.53%)。两组不同CYP2C19基因表型的比例差异无统计学意义。随访90 d,两组间的mRS评分、ADL评分、NI HSS评分差异无统计学意义。对照组和试验组的90 d缺血性卒中累积复发率分别为5.52%(41/743)和5.12%(15/293),差异无统计学意义。结论基于CYP2C19基因检测指导的抗血小板治疗在汉族和壮族的缺血性卒中患者人群中,预防缺血性卒中复发的效果相似。
文摘本文报道了一例老年女性院内卒中患者的临床诊疗过程。该患者于肛肠外科手术后2 d突发急性缺血性卒中,经影像学检查确诊为右侧颈内动脉起始部重度狭窄。在接受了1个月的卒中二级预防药物治疗后,择期行血管内治疗。术前该患者进行了快速细胞色素P450酶家族2亚家族C成员19(cytochrome P450 family 2 subfamily C member 19,CYP2C19)基因检测,结果为中间代谢型,提示应用氯吡格雷的效果可能不佳。基于这一检测结果调整抗血小板治疗方案,选择替格瑞洛联合阿司匹林作为替代治疗。治疗后,患者病情稳定,预后较好。本病例报道提示,在非轻型卒中患者中,快速CYP2C19基因检测可帮助选择抗血小板治疗策略,改善患者预后。
文摘目的建立TaqMan-MGB探针检测CYP2C19基因*2、*3和*17三个多态性位点的方法。方法针对CYP2C19基因*2、*3和*17位点设计合成相应引物及双标记探针。选取2021年3月至2022年6月贵州省人民医院心内科门诊已知基因型的剩余全血样本42例,覆盖每个位点的每个基因型各10例,提取DNA进行聚合酶链反应(PCR)检测,产物进行电泳和Sanger法测序分析。加样1、10、100、800 ng DNA,进行PCR检测以评价灵敏度。每个位点的每个基因型5例,每周1次对其检测,连续3周,以评价重复性。结果设计的引物扩增出目的基因片段,电泳显示明亮的单一的DNA条带;90个基因型的PCR结果与测序结果完全一致(P>0.05);不同加样量PCR法均可准确判读基因型,所有基因型在1 ng水平的Ct值均<34。同一基因型3次重复检测的结果一致。结论本研究成功建立了TaqMan-MGB探针检测CYP2C19基因*2、*3和*17三个多态性位点的方法,具有快速、准确、灵敏、简便的特点。
基金Supported by Research funding from Health Bureau of Zhejiang Province(G20030697)and Research Fund from Hangzhou Tobacco Factory
文摘AIM: To investigate the association between cytochrome P450 2C19 (CYP2C19) gene polymorphism and cancer susceptibility by genotyping of CYP2C19 poor metabolizers (PMs) in cancer patients.METHODS: One hundred and thirty-five cases of esophagus cancer, 148 cases of stomach cancer, 212 cases of lung cancer, 112 cases of bladder cancer and 372 controls were genotyped by allele specific amplification-polymerase chain reaction (ASA-PCR) for CYP2C19 PMs. The frequencies of PMs in cancer groups and control group were compared.RESULTS: The frequencies of PMs of CYP2C19 were 34.1% (46/135) in the group of esophagus cancer patients, 31.8% (47/148) in the stomach cancer patients, 34.4%(73/212) in the group of lung cancer patients, only 4.5%(5/112) in the bladder cancer patients and 14.0%(52/372) in control group.There were statistical differences between the cancer groups and control group (esophagus cancer, X^2=25.65, P<0.005,OR=-3.18, 95%C/=2.005-5.042, stomach cancer, X^2=21.70,P<0.005, OR=2.86, 95%CI=1.820-4.501; lung cancer,X^2=33.58, P<0.005, OR=-3.23, 95%C/=1.503-6.906; bladder cancer, X^2=7.50, P<0.01, OR=-0.288, 95%C/=0.112-0.740).CONCLUSION: CYP2C19 PMs have a high incidence of esophagus cancer, stomach cancer and lung cancer, conversely they have a low incidence of bladder cancer. It suggests that CYP2C19 may participate in the activation of procarcinogen of esophagus cancer, stomach cancer and lung cancer, but may involve in the detoxification of carcinogens of bladder cancer.
文摘Objectives Clopidogrel is a prodrug that has to be converted to an active metabolite by hepatic cytochrome P450(CYP) isoenzymes to inhibit platelet aggregation.Individualvariability of platelet inhibition by clopidogrel suggests a possibility for genetic factors having a significant influence on clopidogrel responsiveness.In this study,we sought to determine the association between the single nucleotide polymorphism of CYP 2C19 681G】A and the occurrence of clopidogrel resistance(CR) in Chinese.Methods The study enrolled 614 hospitalized patients who underwentsuccessful percutaneouscoronary intervention with drug-eluting stents were received the treatmentwith dual antiplatelet regimen(aspirin plus clopidogrel).All patients received loading doses of 600 mg clopidogrel and 300 mg aspirin.20μmol/L ADP-induced platelet aggregation ratio(PAR ) was assessed 24 h after clopi- dogrel administration.The maximum residual PAR≥70%was defined as CR.Genomic DNA was extracted from whole blood samples according to standard protocols,the single nucleotide polymorphism of the CYP2C19 681G】A was genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in all the patients.Results CR was found in 126 patients(20.5%).There was CYP2C19 681G】A polymorphism in the study population.The frequencies of the three kinds of genotypes(GG,GA,A A) in CR group and non-CR (NCR)group were 32.5%,47.6%,19.8%and 48.0%, 45.0%,7.0%,respectively.The frequency of AA genotype was significantly higher in NCR group than that in CR group (OR =3.03,95%CI:1.889～5.784,P=0.003).The A allele carriers were more likely to develop clopidogrel resistance compared with that of G allele carriers(OR=1.85,95%CI: 1.392～2.459,P=0.002).Conclusions CYP2C19 681G/A polymorphism is associated with the risk of CR,and the A allele carriers may be a possible genetic susceptibility factor for patients with CR.
