西北地区汉族HLA-A,B基因座单元型分析

目的　调查分析西北地区汉族人群中HLA A ,B基因座单元型频率。方法　采用PCR SSO反向斑点杂交技术对 87个家系 2 76名西北地区汉族个体HLA A ,B基因座进行检查 ,通过HLA以单元型遗传方式遗传的规律归结出单元型。结果　居单元型频率前三位的是A0 2 B4 6、A30 B13、A0 2 B4 0 ;具有明显连锁不平衡的单元型 11种。结论　西北地区汉族人群中HLA A ,B基因座单元型频率与国内其他地区汉族人群相比有其自身特点 ,A30 B13、A0 1 B37、A32 B4 4具有显著的连锁不平衡性     

ANALYZING HLA HAPLOTYPE OF THE LOCI HLA-A, -B, AND -DRB1 IN MONGOLIA ETHNIC GROUP

Objective To investigate HLA-A ,-B and -DRB1 allele and HLA-A-B-DRB1 haplotype frequencies in Mongolia ethnic group. Methods HLA-A, -B, -DRB1 allele and haplotype in the Mongolia ethnic group were investigated based on 93 individuals by PCR-sequence-based typing （SBT） method. Results Twenty-one alleles were detected for HLA-A, 44 for HLA-B, and 26 for HLA-DRBI. The most frequent alleles were HLA-A ＊ 2402（0. 2097）, HLA-B ＊ 1302（0.0699）, and HLA-DRBI ＊ 0701 （0. 1237）. The most common HLA-A-B-DRBI haplotype were A ＊ 3001-B ＊ 1302-DRB1 ＊ 0701, A ＊ 0101-B ＊ 3701-DRB1 ＊ 1001, followed by the A ＊ 0201-B ＊ 4601-DRB1 ＊ 0901, A ＊ 2402-B＊ 4801-DRB1 ＊ 1101, A＊ 2402-B＊ 5201-DRB1 ＊ 1501, A ＊ 3201-B ＊ 3503-DRB1 ＊ 1301, and A＊ 3303-B ＊ 5801-DRB1 ＊ 0301, which were also presented in Chinese populations. Conclusion The data can be used in forensic and paternity tests to estimate the frequency of a DNA profile or anthropologic research. The characteristics of the distribution of HLA alleles revealed that Mongolia ethnic group is characterized by northern Mongolian Chinese.     

THE STUDY OF POPULATION GENETIC RELATION AMONG TEN ETHNIC GROUPS IN NORTHWEST CHINA

Objective To investigate the genetic relation among ten ethnic groups in northwest China. Methods Allele frequencies of six STR(short tandem repeat) loci in D13S1358, VWA, FGA, D5S818, D13S317, and D7S820 were collected from Lasa Tibetan, Changdu Tibetan, Xi‘an Han, Gansu Dongxlang, Gansu Yugu, Xinjiang Uygur,Ozbak, Kirgiz, Sibe, Ningxla Hui by the results of State Key laboratory, Forensic Science Department, school of medical, Xi‘an Jiaotong University and internet biological information data bank, and compared with that of the Mongolian, Zhuang in China, and White and Negro in USA. The polymorphism index (H, DP, PPE, PIC) and genetic distance, then the phylogenetic tree of all population were reported. Results The resulting tree topology exhibited strong geographic and racial partitioning consistent with that obtained with HLA and classical genetic polymorphisms.Conclusion The results suggest that forensic STR loci may be particularly powerful tools and provide the necessary fine resolution for the reconstruction of recent human evolutionary history.     

GENETIC POLYMORPHISM OF STR LOCI IN CHINESE DRUNGS

ＳＴＲｉｓａｕｎｉｖｅｒｓａｌｇｅｎｅｔｉｃｍａｒｋｅｒｔｈａｔｈａｓｃｈａｎｇｅａｂｌｅ ｐｏｌｙｍｏｒｐｈｉｓｍａｎｄｓｔａｂｌｅｈｅｒｅｄｉｔｙｉｎｈｕｍａｎ ｇｅｎｏｍｅ .ＩｔｉｓａｓｐｅｃｉｆｉｃＤＮＡｓｅｇｍｅｎｔｃｏｍｐｏｓｅｄｏｆ 2～ 7ｂａｓｅｐａｉｒｓａｓｉｔｓｃｏｒｅｓｅｑｕｅｎｃｅ ,ａｎｄｉｓｆｏｒｍｅｄｔｈｒｏｕｇｈｔｈｅｒｅｐｅａｔｅｄｃｏｎｎｅｃｔｉｏｎｏｆｔｈｅｓａｍｅｏｎｅ[1,2 ] .Ｓｉｎｃｅｉｔｈａｓｔｈｅｃｈａｒａｃｔｅｒｉｓｔｉｃｓｓｕｃｈａｓｎｕｍｅｒｏｕｓａ…     

HLA与扩张型心肌病的关联研究

用微量淋巴细胞毒试验检测了20例扩张型心肌病患者的HLA—A、B抗原,并检测了北方汉族无血缘关系的健康人103例作对照。结果发现RR在3以上者有HLA-A28、A31及HLA—B27,但经Fisher确切P值及校正P值处理后,无显著性差异。故未发现与扩张型心肌病有关联的HLA抗原。     

云南白族STR遗传多态性研究

目的　研究我国白族STR遗传多态性。方法　通过STR复合扩增、基因扫描、基因分型调查了 98名中国白族无关个体 1 5个STR基因座等位基因分布情况。结果　共检出 1 3 4个STR等位基因 ,其频率分布在 0 .0 0 5 8～ 0 .5 799之间 ,杂合度 (H)为 0 .5 83 4～ 0 .882 8,个体识别力 (DP)为 0 .773 9～ 0 .9666,非父排除率 (EPP)为 0 .5 692～ 0 .8694,多态信息量 (PIC)为 0 .5 3 1 7～ 0 .8694。结论　为进一步研究中华民族STR遗传结构奠定了基础 ,在人类学、法医学等领域也有重要的应用价值     

HLA-I类基因多态性与白血病易感性的关联性研究

目的探讨白血病易感性与HLA-I类基因多态性之间的关联性,寻找白血病的易感基因。方法采用序列特异性寡核苷酸探针杂交技术(PCR-SSO)对65例白血病患者和48例正常对照组健康者进行HLA-A、B基因分型。结果在等位基因HLA-A、B中,白血病患者的HLA-A01、B38基因的基因频率高于正常对照组(P<0.05),而HLA-A11基因的基因频率明显下降(P<0.05)。结论基因A01、B38对白血病有遗传易感作用,而基因A11对白血病有遗传拮抗作用。     

西安地区32例北方汉族儿童HLA-DRDQ抗原分布状态的调查分析

我们调查了32例三代内无血缘关系的西安地区汉族健康儿童HLA-DR。DQ抗原分布状况。结果示除HLA-DR_1外,其它抗原频率与北京地区汉族人群HLA-DR,DQ抗原分布状态近似,但HLA-DR_1抗原频率在二者间的差别无统计学意义(Pc≥0.197)。与上海资料比较,二者间差别较大, 因样本例数较少,未作统计学处理。提示HLA-DR抗原在中国南北汉族人群间的分布状态有较明显的差别。与国内部分少数民族HLA-DR抗原分布状态相比较,与蒙古、朝鲜等北方少数民族HLA-DR抗原分布状态相接近。     

A NORTHWEST DATABASE MODEL OF SHORT TANDEM REPEAT LOCI IN FORENSIC MEDICINE

CriminalratewasrisingyearafteryearinthenorthwestChina .Itisnecessarytoestablishthefo rensicDNAdatabase .Thereweremanyshorttan demrepeats (STRs)thatappearedtobeabundantandoccurred 15 - 2 0kbonaverageinthehumange nome .STRlociconsistedof 2 - 6bpinlengthasitscoresequences[1] .Thecharacteristicsofhighlyeffi cientandmultipleamplificationmadeSTRsuperiortothetraditionalgeneticmarkers .Alloftheselect edSTRlocihadcommonalleleslessthan 35 0bpinsize[2 ] .STRwasthemostidealgeneticmarkerbe causeofi…     

孕早期绒毛膜GLOI多态性研究及西安地区298例GLOI分型调查

用淀粉/琼脂糖混合凝胶平板电泳法对42例孕早期绒毛膜及其父母血液的乙二醛酶Ⅰ(Glyoxalase Ⅰ)多态性进行了研究。同时对西安地区298例献血员红细胞GLOI进行了分型调查。42例绒毛膜中38例显示出GLOI的三种普通表型:GLOI 1—1型、GLOI 2—1型、GLOI 2—2型,其酶活性与血液无明显差异,其余4例经反复电泳,未能显示出GLOI活性区带。西安地区GLOI的三个普通表型分布为:GLOI 1—1型4.36％、GLOI 2—1型27.85％、GLOI型2—2型67.79％,其基因频率为GLOI~1=0.1828,GLOI~2=0.8172,识别能力(DP)值为0.4610。     

新疆哈萨克族群体三个STR位点遗传多态性

目的　了解新疆哈萨克族人群D1 6S5 39,D7S82 0 ,D1 3S31 7三个STR位点的遗传多态性 ,建立该民族群体遗传学数据库。方法　运用复合PCR扩增 ,6 %变性聚丙烯酰胺凝胶电泳结合银染技术对 1 0 2位无关个体及 8个家系 42人的哈萨克族人群进行调查 ,并与其他种族或人群进行比较。结果　三个位点分别检测出 8、7、8个等位片段 ,多态性分布符合Hardy Weinberg平衡定律。期望杂合度为 0 .9439、0 .935 6、0 .930 4。三个位点的累积PIC =0 .990 5、DP =0 .9998、PE =0 .95 72。此外 ,在与其他四个人群比较中发现除与北京汉族在D7S82 0位点上无统计学意义 (P >0 .0 5 ) ,其余均可见显著性差异 (P <0 .0 5 )。同时 ,在家系调查中无一突变发现且均按孟德尔遗传规律传递。结论　三个STR位点的联合分析在法医学应用及群体遗传学中具有较高的价值。     

Effect of ABCA1-V771M polymorphism on plasma lipid levels and its relationship with coronary atherosclerotic heart disease

Objective To explore the risk association of ABCA1-V771M polymorphism with coronary heart disease (CHD) in Hart nationality in Northwest of China. Methods With case-control study, ABCA1-V771M polymorphism was detected in 204 unrelated Hart nationality people in Northwest of China, and all the subjects by coronary angiography were grouped into 106 cases and 98 controls. The genotypes and alleles frequency distribution of ABCA1-V771M polymorphisms were analyzed by PCR-RFLP analysis, and the clinical statistics of serum lipids were compared and its effects of ABCA1-V771M polymorphism on the plasma lipid levels and coronary atherosclerotic heart disease were analyzed. Results The genotypic frequencies of ABCA1-V771M polymorphism matched well under Hardy-Weinberg equilibrium (P>0.05), V and M allelic frequencies were 33.3% and 66.7%. In comparison with VV VM genotype carriers, MM genotypes carriers had much lower plasma levels of HDL-C (P<0. 001) and much higher plasma levels of TG (P<0. 05). M allelic frequency in CHD group was significantly higher than V allelic frequency (P<0. 05). M allele was related with more severity of atherosclerosis in the coronary artery than V allele (P<0.05). However, there was no obvious difference in the incidence of AMI among carriers with three genotypes of ABCA1-V771M polymorphism (P>0.05). Conclusion ABCA1-V771M polymorphism was not only associated with the plasma levels of HDL-C and TG, but also related to the susceptibility and severity of coronary atheroselerotic heart disease. Moreover, M771 allele appeared to be atherogenie among Han population in Northwest of China.     

甘肃裕固族9个STR基因座遗传多态性研究

目的　研究中国甘肃裕固族STR遗传结构。方法　选择 9个STR基因座 (D3S135 8,VWA ,FGA ,TH0 1,TPOX ,CSF1PO ,D5S818,D13S317,D7S82 0 ) ,采用STR复合扩增及荧光标记STR基因扫描技术 ,同时检测 12 0个裕固族健康无关个体血液样本。结果　 9个STR基因位点共检出 6 5个等位基因 ,基因频率分布在 0 .0 0 5 7～0 .5 795 ;基因型共有 178种 ,频率分布在 0 .0 114～ 0 .30 6 8之间 ;9个STR位点基因型分布均符合Hardy Weinberg平衡定律 (P >0 .0 5 ) ;9个STR位点多态信息量 (PIC)均大于 0 .6 0 5 4 ,杂合度 (H)均大于 0 .6 15 8,个体识别力 (DP)均大于 0 .82 2 6 ,非父排除率 (EPP)均大于 0 .5 0 17。结论　获得了中国甘肃裕固族 9个STR基因座的遗传多态性数据 ,丰富了中华民族基因数据库 ,在人类群体遗传学及法医学研究领域有重要应用价值。     

西安汉族人群HLA-DQA1基因座遗传多态性研究

目的　了解西安汉族群体HLA DQA1基因座的基因及基因型分布 ,获得西安汉族群体HLA DQA1群体遗传学数据。方法　采用PERKIN ELMER公司生产的AmpliTypePM试剂盒 ,PCR扩增HLA DQA1基因座 ,与 11个寡核苷酸探针杂交 ,对西安地区汉族 10 2名无关个体HLA DQA1基因座进行基因频率调查。结果　检出 7种等位基因、2 8种基因型 ,经 χ2 检验基因型的观察值与期望值符合Hardy Weinberg平衡定律 (P >0 .5 ) ,其杂合度 (H)、个体识别率 (DP)、非父排除率 (EPP)和多态信息量 (PIC)分别为 0 .8317、0 .9393、0 .786 6和0 .82 5 0。结论　所得到的群体遗传学数据为遗传学、法医学个体识别和亲权鉴定提供依据     

乙型肝炎患者AMLR及非T细胞Ia抗原表达

本文用氚标胸腺嘧啶核苷,（~3H-TdR）掺入法检测102例各种类型乙肝病毒感染者自身混合淋巴细胞反应（AMLR）、并以单克隆抗体（McAb）Wu35（HLA-DR）和Wu22（HLA-DQ）,经PAP免疫酶组化技术测定非T细胞表面HLA-DR及HLA-DQ抗原。结果表明:除HBsAg携带者及慢性迁延性肝炎患者AMLR接近正常对照外,其它类型HBV感染者AMLR均有不同程度降低,尤其以重症肝炎和肝硬化降低明显。各类乙肝患者DR~+Mon和B细胞及DQ~+Mon和B细胞百分率均有不同程度的下降,以重症肝炎和肝硬化最显著。提示乙肝患者AMLR降低与刺激细胞（Mon和B细胞）表面DR和DQ抗原表达障碍有密切关系,与反应性T细胞无关。这可能是乙型肝炎疾病过程中细胞免疫功能障碍及免疫调节紊乱之机制所在。     

GENETIC POLYMORPHISM IN HUMAN β-DEFENSIN-1 AND CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN HAN POPULATION IN SOUTH OF CHINA

Objective To investigate the correlation between human β-defensin-1 ( HBD-1) exon 2 variations and chronic obstructive pulmonary disease susceptibility in Han population in south of China. Methods The frequency of polymorphic genotypes of HBD-1 exon 2 (1654G/A) was examined in 120 COPD patients ( COPD group) and 108 smokers without COPD ( control group) by restriction fragment length polymorphism. Results The frequencies of polymorphic genotypes in HBD-1 exon 2 in COPD group were G/G 82.50%, G/A 10. 83%, and A/A 6. 67%. The frequencies of polymorphic genotypes in control group were G/G 95.37%, G/A 3. 70%, and A/A 0. 93 %. It showed significant difference between two groups ( P ＜ 0. 01 ). The differences in allele frequencies were also significant between two groups ( G allele frequency: 87. 92% vs 97. 22%; A allele frequency: 12. 08% vs 2.78%; P ＜ 0. 01 ). The G→A mutation rised along with the severity of the COPD. Conclusion The genetic polymorphism in HBD-1 exon 2 gene might be associated with the susceptibility to COPD in Han population of South China.     

HLA-DQB位点与胃癌的相关性研究

运用ＰＣＲ ＳＳＯＰ技术对中国北方汉族人群５６ 例胃癌患者的血液和其中２２ 例患者胃癌组织灶的ＨＬＡ ＤＱＢ位点进行研究,结果与对照组相比,两组间基因频率无显著差异,但１０ 种等位基因型的频率显著大于对照组,分别是０３０６Ｘ／０３０６Ｘ,０３０６Ｘ／０３０４, ０３０６Ｘ／０４０１, ０２０／０２０,０５０１／０６０５２,０５０１／０６０６Ｘ,０５０１／０５０１,０５０１／０６０３,０３０７／０４０２,０３０１／０３０１（ Ｐ＜ ０．０２５）,胃癌患者血液与癌灶组织ＤＱＢ位点的分型结果完全一致,符合率达１００％ 。提示：①某些ＨＬＡ ＤＱＢ基因型可能在胃癌的发病和病理过程中起一定的作用。②ＨＬＡ ＤＱＢ等位基因水平未参与胃癌组织表面ＨＬＡ ＤＱＢ抗原表达异常的机制     

原发性肝癌的遗传学研究

本文对74例原发性肝癌病人和相应的75例对照进行了HLA检测和遗传度调查。结果表明:肝癌组与对照组相比,Bw39抗原频率明显升高(Fisher P<0.01,Pc>0.05);而Bw60、Bw35抗原频率明显下降(Fisher P<0.01,Pc>0.05)。从群体遗传学调查证明了遗传因素在肝癌发病中的作用。     

白血病相关抗原MLAA-34 HLA-A2~+限制性CTL表位的预测及鉴定

目的采用生物信息学方法预测和鉴定白血病相关抗原MLAA-34 HLA-A2+限制性CTL表位,探索基于MLAA-34为靶标的白血病免疫治疗的可能性。方法采用超基序法和量化基序法对靶抗原MLAA-34 HLA-A2+限制性CTL表位进行预测;选取评分较高且排位在前10位的抗原表位肽为候选表位肽,并进行人工合成。利用T2细胞,以肽结合试验及流式细胞术检测各候选CTL表位肽的结合亲和力[以荧光指数(fluorescence index,FI)表示];选取亲和力较高的4种多肽进行特异性CTLs的体外扩增,同时用LDH释放法对CTLs的活性进行检测。结果预测的前10位候选MLAA-34 CTL表位肽中,MLAA2(ILLKNQPKL)、MLAA3(LLTRHKVLV)、MLAA5(LLVTLI-ADL)和MLAA9(YLIKQIRDL)具有较高的亲和力,其FI分别为1.65、1.73、1.82、1.02,可作为候选表位肽进一步分析。细胞毒实验分析显示,MLAA5(LLVTLIADL)可在体外有效诱导特异性CTLs的产生,杀伤靶细胞。结论 MLAA5(LLVTLIADL)为白血病相关抗原MLAA-34的HLA-A2+限制性CTL表位,为基于MLAA-34的治疗性多肽疫苗的设计制备奠定了基础。     

西安地区汉人GPT遗传多态性研究

用琼脂糖－淀粉混合凝胶电泳法结合特异组织酶染色技术，对汉族人群红细胞谷氨酸转氨酶（ＧＰＴ）的遗传多态性进行研究。结果表明：该方法灵敏快速，分辨率高。ＧＰＴ可分为ＧＰＴ１－１型；ＧＰＴ２－２型；ＧＰＴ２－１型。基因频率ＧＰＴ１为０．５３６８，ＧＰＴ２为０．４６３２，符合Ｈａｒｄｙ－Ｗｅｒｉｎｂｅｒｇ平衡定律。ＧＰＴ分型在人群个体间的识别ＤＰ值为０．６２４９，是法医个人识别和亲权鉴定非常有用的遗传标记，也可作为异体骨髓移植成功在接的诊断指标。