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ID:34074798
大小:1.43 MB
页数:40页
时间:2019-03-03
《中国汉族人群mthfd1l基因多态性与阿尔茨海默病的关联性研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国汉族人群MTHDlL基因多态性与阿尔茨海默病的关联性研究摘要目的本研究旨在探讨亚甲基四氢叶酸脱氢酶卜蛋白(MTHFDlL)基因单核甘酸多态性与迟发性阿尔茨海默病(Late—onsetAlzheimer’Sdisease,LOAD)易感性的关系。方法采用病例一对照研究方法,选取582例LOAD患者和607例年龄和性别相匹配的健康对照作为研究对象。根据最近报道的一项LOAD全基因组关联研究,选取2个的SNPs位点(rsl1754661,rs2073067)利用聚合酶链式反应一连接酶检测反应(PCR~LDR
2、)技术进行基因分型,并进行关联分析。应用等位基因特异性多重PCR(Multi—ARMS)技术进行APOE基因分型。结果MTHFDlL基因rsl1754661及rs2073067多态性位点与LOAD的易感性相关联,携带rsl1754661最小等位基因可增加LOAD的发病风险(OR=I.727,P=0.016),对于rs2073067位点,仅在按ApoE£4等位基因分组后,在APOE£4等位基因携带者组中,携带rs2073067最小等位基因可降低LOAD的发病风险(OR=O.400,P3、归分析显示,在校正年龄、姓别及APOE£4携带状态等因素后,在显性模型中rsl1754661多态位点仍与LOAD的发病风险升高显著相关(oR=1.627,95%CI=1.016—2.604,P=0.043)。rsll754661和rs2073067在同一个连锁不平衡区域,它们所构建的单倍体型AC与LOAD发病风险的升高显著相关(OR=1.730,95%CI=1.105—2.709,P=0.015)。结论MTHFDlL基因为汉族人群LOAD的易感基因,其遗传多态性与汉族人LOAD的发病相关联,进一步的深入研4、究MTHFDlL基因在LOAD的发生过程中的作用机制,有望为AD治疗开辟一条新的治疗道路。硕士研究生马晓迎(神经病学)指导教师谭兰教授关键词:阿尔茨海默病;亚甲基四氢叶酸脱氢酶卜蛋白基因;同型半胱氨酸;单核苷酸多态性ReplicationoftheMTHFDlLgeneassociationwithlate-onsetAlzheimer’SdiseaseinanorthernHanChinesepopulationAbstractObjective:Weconductedareplicationstudy5、ofthe2geneticvariants,rs1754661andrs2073067inMTHFD1Lthathavebeenrecentlyreportedtobeassociatedwithlate-onsetAlzheimer’Sdisease(LOAD)inagenome-widestudyinCaucasians.Methods:582LOADpatientsand607healthysubjectsmatchedforsexandagewererecruitedforthestudy.Two6、singlenucleotidepolymorphisms(rsl1754661andrs2073067)ofMTHFD1LandApoEgeneweredetectedusingpolymerasechainreaction-ligasedetectionreaction(TaqManAssay)onanABIPrism377SequenceDetectionSystemandmultiplexamplificationmutationsystemPCR(Multi-ARMS).Results:Ther7、esultsrevealedthatthereweresignificantdifferencesingenotype(P=0.029)andallele(P=0.016)frequenciesoftheSNPrsll754661butnoinrs2073067betweenADpatientsandcontrols.TheAalleleofrsl1754661Wasassociated、析manincreasedriskofLOAD(OIb1.727;P=O.016).InthesubgroupofAp8、oEe4carders,boththeAofrsl1754661andGalleleofrs2073067wereobservedtobesignificantdifferencesingenotypeandallelefrequenciesofboththeSNPrs1754661andrs2073067.TheGalleleofrs2073067protectagainsttheADrisk.Forrs1754661,th
3、归分析显示,在校正年龄、姓别及APOE£4携带状态等因素后,在显性模型中rsl1754661多态位点仍与LOAD的发病风险升高显著相关(oR=1.627,95%CI=1.016—2.604,P=0.043)。rsll754661和rs2073067在同一个连锁不平衡区域,它们所构建的单倍体型AC与LOAD发病风险的升高显著相关(OR=1.730,95%CI=1.105—2.709,P=0.015)。结论MTHFDlL基因为汉族人群LOAD的易感基因,其遗传多态性与汉族人LOAD的发病相关联,进一步的深入研
4、究MTHFDlL基因在LOAD的发生过程中的作用机制,有望为AD治疗开辟一条新的治疗道路。硕士研究生马晓迎(神经病学)指导教师谭兰教授关键词:阿尔茨海默病;亚甲基四氢叶酸脱氢酶卜蛋白基因;同型半胱氨酸;单核苷酸多态性ReplicationoftheMTHFDlLgeneassociationwithlate-onsetAlzheimer’SdiseaseinanorthernHanChinesepopulationAbstractObjective:Weconductedareplicationstudy
5、ofthe2geneticvariants,rs1754661andrs2073067inMTHFD1Lthathavebeenrecentlyreportedtobeassociatedwithlate-onsetAlzheimer’Sdisease(LOAD)inagenome-widestudyinCaucasians.Methods:582LOADpatientsand607healthysubjectsmatchedforsexandagewererecruitedforthestudy.Two
6、singlenucleotidepolymorphisms(rsl1754661andrs2073067)ofMTHFD1LandApoEgeneweredetectedusingpolymerasechainreaction-ligasedetectionreaction(TaqManAssay)onanABIPrism377SequenceDetectionSystemandmultiplexamplificationmutationsystemPCR(Multi-ARMS).Results:Ther
7、esultsrevealedthatthereweresignificantdifferencesingenotype(P=0.029)andallele(P=0.016)frequenciesoftheSNPrsll754661butnoinrs2073067betweenADpatientsandcontrols.TheAalleleofrsl1754661Wasassociated、析manincreasedriskofLOAD(OIb1.727;P=O.016).InthesubgroupofAp
8、oEe4carders,boththeAofrsl1754661andGalleleofrs2073067wereobservedtobesignificantdifferencesingenotypeandallelefrequenciesofboththeSNPrs1754661andrs2073067.TheGalleleofrs2073067protectagainsttheADrisk.Forrs1754661,th
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