Three dinucleotide repeat polymorphisms at the D8S1217, D8S1220, and D8S1221 loci

Three polymorphic dinucleotide (CA) repeat clones were isolated from a CEPH mega-YAC clone (936F7), and were localized to chromosome 8 using a panel of 13 mouse/human somatic cell hybrids.     

Two dinucleotide repeat polymorphisms at the D8S1444 and D8S1445 loci

Summary Two polymorphic dinucleotide (CA) repeat clones were isolated from two P1 phage clones, 1239F3 and 8H11, and were localized to chromosome 8 using a panel of 13 mouse human somatic cell hybrids.     

Two dinucleotide repeat polymorphisms at the D8S1442 and D8S1443 loci

Two polymorphic dinucleotide (CA) repeat clones were isolated from cosmids, cCI8-1121 and cCI8-1199, mapped to chromosome 8p11.2-p12.     

广西黑衣壮族D2S1338,D8S1179,D18S51基因座遗传多态性

目的 获得广西黑衣壮族人群3个STR基因座的群体遗传分布资料.方法 应用荧光标记STR基因扫描技术对152名广西黑衣壮族无关个体进行基因分型.结果 D2S1338检测出11种等位基因,频率分布在0.0030～0.2800.D8S1179检测出7种等位基因,频率分布在0.0987～0.2237.D18S51检测出12种等位基因,频率分布在0.0033～0.2467.对上述3个STR基因座的基因型观察值和期望值进行X^2检验,均符合Hardy-Weinberg平衡定律（P＞0.05）.D2S1338、D8S1179、D18S51基因多样性分别为0.8498、0.8450、0.8507;多态信息总量均为0.8300.结论 广西黑衣壮族3个STR基因座属高度多态性位点;D2S1338的等位基因19、D8S1179的等位基因10和D18S51的等位基因15可能是广西黑衣壮族群体中相应STR基因座最原始的等位基因.     

Allele-specific MVR-PCR analysis at minisatellite D1S8

Minisatelilte variant repeat mapping by the polymerase chainreaction (MVR-PCR) provides a digital approach to DNA typingof great potential use both in forensic medicine and, by mappingsingle alleles, for exploring allelic variability and mutationprocesses at minisateliltes. The MVR haplotypes of single allelescan be determined either from physically separated alleles orby pedigree analysis of digital diplold codes generated fromboth alleles simultaneously. We now show that single allelescan be rapidly mapped from total genomic DNA using allele-specificPCR primers directed to polymorphic sites in the DNA flankingthe minisatellite. This approach can also be used to dissectmixed DNA samples such as those often encountered in forensicDNA analysis.     

Dinucleotide repeat polymorphism at the D8S1223 locus

Summary A polymorphic dinucleotide (CA) repeat clone was isolated from a CEPH mega-YAC clone (936F7), and was localized to chromosome 8 using a panel of 13 mouse/human somatic cell hybrids.     

微卫星D8S84和D8S85在家族性热性惊厥人群相关性分析中的应用

目的：确认家族性热性惊厥与８号染色体长臂（８ｑ１３－２１）的关联；方法：用微卫星二核苷酸重复序列Ｄ８Ｓ８４和Ｄ８Ｓ８５对１３５例正常人和６３个热性惊厥家系进行聚合酶链反应－变性聚丙烯酰胺凝胶电泳（ＰＣＲ－ＰＡＧＥ）分型，结果用遗传学群体与家系计算机系统ＰＰＡＰ统计；结果：两种标志基因在中国正常人群处于Ｈａｒｄｙ－Ｗｅｉｎｂｕｒｇ平衡，并有较西方人略高的多态信息含量（ＰＩＣ），Ｄ８Ｓ８５的两种单体型频率在热性惊厥群体和普通正常人群存在显著性差异；结论：家族性热性惊厥可能与８ｑ的某些位点相关     

D6S296、D8S264基因座多态性与广西地区汉/壮族人群精神分裂症的关联性

目的探讨D6S296、D8S264基因座多态性与广西地区汉、壮族人群精神分裂症的关联性以及这两个基因座与汉、壮族精神分裂症关联性的差异。方法选取广西脑科医院汉族精神分裂症患者及其健康直系家属46对(其中患者46例,家属49例),壮族精神分裂症患者及其健康直系家属45对(其中患者45例,家属48例)作为研究对象,分别以其健康家属作为正常对照组。提取其全血DNA并使用PCR扩增仪对其进行扩增,所得PCR产物用ABI3730XL型基因分析仪自动进行基因检测,并用遗传学统计方法进行分析。结果汉、壮族正常对照组D6S296、D8S264各等位基因频率的分布均符合Hardy-Weinberg遗传平衡定律(P0.05)。汉、壮族精神分裂症患者组比较,D6S296的264bp等位基因频率分别为2.2%和18.9%(2/17),差异有显著统计学意义(χ2=13.6,P0.01);D8S264的129bp等位基因频率分别为18.5%/8.0%(17/7),差异有统计学意义(χ2=4.31,P0.05),其他各等位基因频率的分布在各组间的差异均无统计学意义(P0.05)。结论广西地区汉、壮族人群精神分裂症的发生可能与D6S296、D8S264多态性无关。     

High density deletion mapping of bladder cancer localizes the putative tumor suppressor gene between loci D8S504 and D8S264 at chromosome 8p23.3

Deletion of chromosome 8p is associated with the progression of bladder cancer. To identify the putative tumor suppressor gene locus we have analyzed 145 bladder cancers with 12 microsatellite markers for allelic changes at the chromosome 8p23.3 region. We mapped the smallest overlapping deletion to approximately 0.7 cM genetic distance between loci D8S504 and D8S264. Allelic changes at this region occurred in 75 (52%) of the 145 tumors. We found a significant correlation between alterations at chromosome 8p23.3 and the tumor grade. The correlation between genetic changes and tumor stage reflected the distribution of tumors of different grades in each pathologic stage.     

河北汉族人群D1S8位点DNA结构多态性

目的 研究小卫星变异重复序列（ｍｉｎｉｓｔａｅｌｌｉｔｅ ｖａｒｉａｎｔ ｅｒｐｅａｔ,ＭＶＲ）位点Ｄ１Ｓ８的结构多态性,为ＤＮＡ指纹数据库的构建及法医学应用提供基础资料。方法 应用ＭＶＲ－聚合酶链反应和聚丙烯酰胺梯度凝胶电泳银染法,检测２４０名河北汉族针关个体Ｄ１Ｓ８位点重复序列的变异并进行数字编码。结果 每一个体得到约３０个数字编码,未发现任何两个无关个体编码相同,３０个编码完全相同的概率为３     

A highly polymorphic dinucleotide repeat at the D8S1222 locus

A highly polymorphic dinucleotide (CA) repeat clone was isolated from a CEPH mega-YAC clone (844E2), and was localized to chromosome 8 using a panel of 13 mouse/human somatic cell hybrids.     

成都汉族群体七个短串联重复序列基因座的遗传多态性和法医学应用研究

目的获得中国成都地区汉族群体DIS2142、DIS3733、D2S1774、D3S2459、D21S1409、D21S1437和D21S2055七个短串联重复序列（shoa tandem repeam，STR）基因座的群体遗传学资料，评价它们在法医鉴定的应用价值。方法用PCR、聚丙烯酰胺凝胶电泳、银染技术，对283名成都汉族无血缘关系的个体及50个家庭样品进行检测。结果DIS2142检出11个等位基因，23种基因型；DIS3733检出8个等位基因，19种基因型；D2S1774检出8个等位基因，15种基因型；D3S2459检出7个等位基因，19种基因型；D21S1409检出6个等位基因，12种基因型；D21S1437检出9个等位基因，26种基因型；D21S2055检出20个等位基因，77种基因型；基因型分布符合Hardy．Weinberg平衡定律；50个家庭样品调查证实上述基因座均符合孟德尔常染色体共显性遗传，未发现突变。结论DIS2142、D1S3733、D2S1774、D3S2459、D21S1409、D21S1437和21S2055基因座具有较好的多态性。基因座间独立性分析，证实上述7个基因座之间不存在连锁关系，可作为法医学亲子鉴定和个人识别的遗传标记。     

STR位点D19S253和D8S1179的多态性研究

目的研究ＳＴＲ位点Ｄ１９Ｓ２５３和Ｄ８Ｓ１１７９的多态性，为法医学应用提供基础数据。方法应用ＰＣＲ及ＰＡＧ电泳技术对武汉地区２００多名汉族无关个体进行了调查。结果两位点各检出９个等位基因，首次获得汉族人群频率分布。两位点基因型频率分布符合Ｈａｒｄｙ－Ｗｅｉｎｂｅｒｇ平衡。家系调查证实了等位基因的传递遵循孟德尔遗传规律，观察１００次减数分裂未发现突变基因。Ｄ１９Ｓ２５３和Ｄ８Ｓ１１７９位点的杂合度观察值分别为０．８０８９和０．８７１２，多态性信息含量分别为０．７７５４和０．８２５８。两位点联合ＰＤ值为０．９９６６，累积非父排除率为０．８７９１。结论表明这两个多态位点在法医学个人识别及亲子鉴定中是很有价值的遗传标记系统。     

D16S539、D7S820和D13S317位点在新疆哈萨克族中的遗传多态性

目的 了解新疆哈萨克族人群D16S539、D7S820和D13S317 3个STR位点的遗传多态性。方法 应用多重PCR扩增，6％变性聚丙烯酰胺凝胶电泳结合银染技术对102名无关个体及8个家系42人的哈萨克族人群进行调查，并与其他人群进行了比较。结果 3个位点分别检测出8、7、8个等位片段，多态性分布符合Hardy-Wdinberg平衡定律，期望杂合度为：0.9439、0.9356、0.9304，累积多态信息量为0.9905、个体识别为0.9998、非父排除率为0.9572，与其他人群比较差异有显著性（P＜0.05），在家系调查中无一突变发现，均按孟德尔遗传规律传递。结论 3个STR位点的综合检验在法医学应用及群体遗传学中显示了较高的价值。     

青岛地区D6S477等五个短串联重复序列基因座的遗传多态性研究

目的 了解D6S477等5个基因座在青岛地区汉族群体中基因型分布及等位基因频率等遗传多态性数据，初步探讨其应用价值。方法 收集200名青岛地区汉族无关个体的静脉血，ACD抗凝，采用Chelex法提取DNA，应用聚合酶链反应技术，扩增D6S477、D9S1118、D18S865、D19S400和D20S161基因座的短串联重复序列，聚丙烯酰胺凝胶垂直电泳，银染显色分型。结果 获得了青岛地区汉族群体上述5个基因座的等位基因频率，基因型分布均符合Hardy-Weinberg平衡（P〉0．05）。结论 这5个基因座在青岛地区汉族群体中有较高的非父排除率和个人识别机率，在遗传学研究中有较高的应用价值。     

Linkage of G8 (D4S10) in two Swedish families with Huntington''s disease

Two Swedish families with Huntington's disease (HD) have been investigated for linkage with G8 (D4S10). In one family from northern Sweden (Family 1) 48 family members were examined, and in another family from the southwestern part of Sweden (Family 2) 14 family members were examined. The lod scores were 1.531 for Family 1 and 2.057 for Family 2, and the combined lod score was 3.59. The HD gene was segregating with the haplotype C in Family 1 and with haplotype A in Family 2. The predictive value of the test was obvious. Before the testing with the G8 probe, 84.2% of the family members in Family 1 had a theoretical risk of 25% or 50% of having the HD gene. After the testing with the G8 probe, only 23.7% of the family members remained at the same risk, and it could also be certified that 63.2% had no or little risk of having the HD gene. Only one asymptomatic person was predicted to have HD.