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作 者:崔广林[1] 丁虎[1] 徐宇军[1] 陈琛[1] 汪道文[1]
机构地区:[1]华中科技大学同济医学院附属同济医院心内科高血压病研究所,武汉430030
出 处:《中华心血管病杂志》2012年第6期477-481,共5页Chinese Journal of Cardiology
基 金:国家863计划项目(2006AA02A406)
摘 要:目的探讨高分辨率熔解曲线(highresolution melting,HRM)方法对需接受华法林治疗患者进行CYP2C9*3(1075A/C,rs1057910)和VKORC1(-1639A/G,rs9923231)基因分型和估计华法林起始剂量的可行性,同时比较不同基因分型方法的优缺点和使用价值。方法建立检测CYP2C9。3(1075A/C,rs1057910)和VKORC1(-1639A/G,rs9923231)两个多态性位点基因型的HRM方法,在接受华法林治疗的100例患者中进行基因型的检测与分析,并与传统的PCR一限制性片段长度多态性(PCR—RFLP),TaqMan探针法及DNA测序法相比较。结果3种方法检测CYP2C9$3(1075A/C,rs1057910)和VKORC1(-1639A/G,rs9923231)的基因型完全一致,与DNA测序法相符合。而HRM方法更简单、经济、快速,临床应用的可行性高。100份临床标本的检测结果显示VKORC1—1639AA、AG、GG3种基因型分别有73(73%)、23(23%)和4例(4%);CYP2C91075AA、AC、CC3种基因型分别有94(94%)、6(6%)和0例。敏感性和特异性分析结果发现HRM方法检测这两种突变的敏感性和特异性均为100%。结论HRM的方法能有效的检测CYP2C9*3(1075A/C;rs1057910)和VKORC1(-1639A/G;rs9923231)基因多态性且与其他方法相比临床操作的可行性高。Objective To establish the high-resolution melting curve (HRM) approach for genotyping CYP2C9 * 3 (1075A/C, rs1057910) and VKORC1 (-1639A/G, rs9923231 ) and explore its value on estimation of the Warfarin initial dose in comparison with various traditional genotyping methods. Methods CYP2C9 * 3 ( 1075A/C, rs1057910) and VKORC1 (-1639A/G, rs9923231 ) genotyping was detected in 100 patients receiving Warfarin therapy by the newly developed HRM method and traditional genotyping methods including PCR-restriction fragment length polymorphism (PCR-RFLP) , TaqMan probe and DNA sequencing. Results The results of the genotypes obtained from above mentioned methods to detect CYP2C9 * 3 ( 1075A,/C, rs1057910) and VKORC1 (-1639A/G, rs9923231 ) were similar and consistent. The HRM method is simpler, more economical, and faster compared to the traditional methods. The frequencies of the VKORCl-1639 AA, AG, GG genotypes from these 100 clinical samples were 73 (73%), 23 (23%), 4 (4%), respectively; Frequencies of the CYP2C9 1075 AA, AC, CC genotypes were 94(94% ), 6 cases (6%), 0, respectively. Conclusions HRM approach can effectively detect CYP2C9* 3 ( 1075A/C, rs1057910) and VKORC1 (-1639A/G, rs9923231 ) polymorphisms and this method is simpler, more economical, and faster compared to the traditional methods for detecting CYP2C9 * 3 ( 1075A/C, rs1057910) and VKORC1 ( -1639A/G,rs9923231 ) polymorphisms.
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