目的:建立DXS9902,DXS7130,DXS9898及DXS9895等4个X染色体特异性短串联重复(X-chromosomespecific short tandem repeat,X-STR)基因座的复合扩增体系,调查其多态性并探讨在法医学实践中的应用.方法:复合扩增DXS9902,DXS7130,DXS9898及DX...目的:建立DXS9902,DXS7130,DXS9898及DXS9895等4个X染色体特异性短串联重复(X-chromosomespecific short tandem repeat,X-STR)基因座的复合扩增体系,调查其多态性并探讨在法医学实践中的应用.方法:复合扩增DXS9902,DXS7130,DXS9898及DXS98954个基因座,ABI PRISM3100进行毛细管电泳检测,Genescan及Genetyper软件进行检测结果分析及等位基因分型.结果:在中国北方汉族200名无关男性个体及200名无关女性个体中,4个基因座分别发现了6,12,8,6个等位基因.结论:这4个基因座的复合扩增系统有较高的多态性信息,在个体识别和亲权鉴定中有较好的实用价值.展开更多
目的调查河南汉族人群中19个X染色体短串联重复序列(X-chromosome short tandem repeat,X-STR)基因座的遗传多态性,评估其在法医学应用中的价值。方法选取河南汉族人群519名无关个体口腔拭子DNA模板,使用AGCU X19 STR荧光检测体系(DXS7...目的调查河南汉族人群中19个X染色体短串联重复序列(X-chromosome short tandem repeat,X-STR)基因座的遗传多态性,评估其在法医学应用中的价值。方法选取河南汉族人群519名无关个体口腔拭子DNA模板,使用AGCU X19 STR荧光检测体系(DXS7423、DXS10148、DXS8378、DXS10162、DXS7132、DXS10079、DXS10103、DXS10101、HPTRB、DXS10074和DXS10135、DXS10159、DXS10164、DXS10075、DXS6809、DXS6789、DXS7424、DXS101和DXS10134)进行电泳检测。结果19个X-STR基因座中除了DXS10134外,其余基因座的基因型分布均符合Hardy-Weinberg平衡(Bonferroni校正P>0.0002=0.05/233),519个河南汉族无关个体共检出219个等位基因,频率为0.0013~0.6130。19个基因座的观察杂合度(Ho)为0.5537~0.9228,理论杂合度(He)为0.5428~0.9252,多态信息含量(PIC)为0.4541~0.9189。结论19个X-STR基因座在河南汉族人群中具有较高的遗传多态性,可满足法医学实际应用,在复杂亲缘关系鉴定和疑难混合检材的法医实践中有特殊的应用价值。展开更多
The population genetic data and forensic parameters of 19 X-chromosome short tandem repeat （X-STR） loci in Chinese Uygur ethnic minority are presented. These loci were detected in a sample of 233 （94 males and 139 ...The population genetic data and forensic parameters of 19 X-chromosome short tandem repeat （X-STR） loci in Chinese Uygur ethnic minority are presented. These loci were detected in a sample of 233 （94 males and 139 females） unrelated healthy individuals. We observed 238 alleles at the 19 X-STR loci, with the corresponding gene frequencies spanning the range from 0.0021 to 0.5644. After Bonferroni correction （P〉0.0026）, there were no signif- icant deviations from Hardy-Weinberg equilibrium. The cumulative power of discrimination in females and males, and the probability of exclusion of the 19 X-STR loci were 0.999 999 999 999 999 999 998 091,0.999 999 999 999 966, and 0.999 999 986 35, respectively. The cumulative mean exclusion chance was 0.999 999 992 849 in deficiency cases, 0.999 999 999 999 628 in normal trios, and 0.999 999 998 722 in duo cases. The high value of the forensic parameters mentioned above revealed that the novel panel of 19 loci had important values for forensic applications in the LJygur group.展开更多
文摘目的:建立DXS9902,DXS7130,DXS9898及DXS9895等4个X染色体特异性短串联重复(X-chromosomespecific short tandem repeat,X-STR)基因座的复合扩增体系,调查其多态性并探讨在法医学实践中的应用.方法:复合扩增DXS9902,DXS7130,DXS9898及DXS98954个基因座,ABI PRISM3100进行毛细管电泳检测,Genescan及Genetyper软件进行检测结果分析及等位基因分型.结果:在中国北方汉族200名无关男性个体及200名无关女性个体中,4个基因座分别发现了6,12,8,6个等位基因.结论:这4个基因座的复合扩增系统有较高的多态性信息,在个体识别和亲权鉴定中有较好的实用价值.
文摘目的调查河南汉族人群中19个X染色体短串联重复序列(X-chromosome short tandem repeat,X-STR)基因座的遗传多态性,评估其在法医学应用中的价值。方法选取河南汉族人群519名无关个体口腔拭子DNA模板,使用AGCU X19 STR荧光检测体系(DXS7423、DXS10148、DXS8378、DXS10162、DXS7132、DXS10079、DXS10103、DXS10101、HPTRB、DXS10074和DXS10135、DXS10159、DXS10164、DXS10075、DXS6809、DXS6789、DXS7424、DXS101和DXS10134)进行电泳检测。结果19个X-STR基因座中除了DXS10134外,其余基因座的基因型分布均符合Hardy-Weinberg平衡(Bonferroni校正P>0.0002=0.05/233),519个河南汉族无关个体共检出219个等位基因,频率为0.0013~0.6130。19个基因座的观察杂合度(Ho)为0.5537~0.9228,理论杂合度(He)为0.5428~0.9252,多态信息含量(PIC)为0.4541~0.9189。结论19个X-STR基因座在河南汉族人群中具有较高的遗传多态性,可满足法医学实际应用,在复杂亲缘关系鉴定和疑难混合检材的法医实践中有特殊的应用价值。
基金Project supported by the Scientific Research Program of the Higher Education Institution of the Xinjiang Uygur Autonomous Region(No.XJEDU2011i33),Chinathe National Natural Science Foundation of China(No.81373248)the National Science Foundation for Distinguished Young Scholars of China(No.81525015)
文摘The population genetic data and forensic parameters of 19 X-chromosome short tandem repeat （X-STR） loci in Chinese Uygur ethnic minority are presented. These loci were detected in a sample of 233 （94 males and 139 females） unrelated healthy individuals. We observed 238 alleles at the 19 X-STR loci, with the corresponding gene frequencies spanning the range from 0.0021 to 0.5644. After Bonferroni correction （P〉0.0026）, there were no signif- icant deviations from Hardy-Weinberg equilibrium. The cumulative power of discrimination in females and males, and the probability of exclusion of the 19 X-STR loci were 0.999 999 999 999 999 999 998 091,0.999 999 999 999 966, and 0.999 999 986 35, respectively. The cumulative mean exclusion chance was 0.999 999 992 849 in deficiency cases, 0.999 999 999 999 628 in normal trios, and 0.999 999 998 722 in duo cases. The high value of the forensic parameters mentioned above revealed that the novel panel of 19 loci had important values for forensic applications in the LJygur group.
