HLA—DQA1,DQB1,DRB1＊02,07,09等位基因及单倍型在华东地区汉？…

应用ＰＣＲ－ＳＳＯ方法，对华东地区汉族人群进行了ＨＬＡ－ＤＱＡ１，ＤＱＢ１和ＤＲＢ１＊０２，０７，０９基因分型，ＤＱＡ１中以ＤＱＡ１＊０３０１基因频率最高，其次为＊０５０１和０１０２，＊０４０１最低，ＤＱＢ１中以ＤＱＢ１＊０３０３频率最高，其次为＊０．３０１，＊０６０１和＊０２０１，＊０５０１，＊０６０４和＊０６０５最低；ＤＲ９基因频率较高，ＤＲ２中ＤＲＢ１＊１５０１占７３５，基因频率为０．０８５     

HLA-DQA1、DQB1、DRB1 02,07,09等位基因及单倍型在华东地区汉族人群的分布

应用ＰＣＲ－ＳＳＯ方法，对华东地区汉族人群进行了ＨＬＡ－ＤＱＡ１、－ＤＱＢ１和ＤＲＢ１＊０２，０７，０９基因分型。ＤＱＡ１中以ＤＱＡ１＊０３０１基因频率最高（０．３８４４），其次为＊０５０１（０．１４０６）和０１０２（０．１２１９），＊０４０１最低（０．０２８１）；ＤＱＢ１中以ＤＱＢ１＊０３０３基因频率最高（０．２３４２），其次为＊０３０１（０．１８９９）、＊０６０１（０．１２０３）和＊０２０１（０．１１０８），＊０５０１、＊０６０４和＊０６０５最低（均为０．０１２７）；ＤＲ９基因频率较高（０．２３１０），ＤＲ２中ＤＲＢ１＊１５０１占７３％，基因频率为０．０８５４，未见＊１６０１。ＤＱＡ１、ＤＱＢ１及ＤＲＢ１等位基因之间存在显著的连锁不平衡。ＤＲＢ１＊０９０１－ＤＱＡ１＊０３０１－ＤＱＢ１＊０３０３、ＤＱＡ１＊０１０３－ＤＱＢ１＊０６０１等为常见单倍型。本资料与我国其他汉族人群资料有可比性，也存在一定差异。     

中国南方汉族人群HLA—DQA1位点多态性与系统性红斑狼疮易感…

应用多聚酶链反应／序列特异寡核苷酸探针杂交（ＰＣＲ／ＳＳＯＰＨ）方法，探讨了我国东南沿海汉族人群ＨＬＡ－ＤＱＡ１等位基因多态性与系统性红斑狼疮（ＳＬＥ）的易感性关系，对５０例ＳＬＥ患者和６７例健康人对照血样本分析，表明ＳＬＥ患者具有显著高的ＤＱＡ１＊０１０２等位基因频率，ＯＲ＝４６．０４，Ｐ＜０．００１，可能是一易感等位基因，而ＤＱＡ１＊０５０１在病例与对照中呈相反结果，ＯＲ＝０．０４２，Ｐ＝０。     

抗磷脂抗体阳性SLE患者HLA DRB1、DQA1、DQB1基因单倍型研究

本文采用ＰＣＲ ＲＦＬＰ技术对抗磷脂抗体阳性（ＡＰＡ＋）ＳＬＥ患者ＨＬＡ ＤＲＢ１、ＤＱＡ１ 和ＤＱＢ１ 基因进行分型研究, 同时以上海地区汉族随机人群作对照, 发现这类病人的ＤＲＢ１＊ ０８０３ ＤＱＡ１＊ ０１０３ ＤＱＢ１ ＊０６０１ 单倍型频率显著增高（ Ｐ＜ ０－０１） 相对危险率为４－４５, 说明该疾病与此单倍型存在着很强的关联。     

中国南方汉族人群HLA—DQB1基因对系统红斑狼疮的易感性研究

应用ＰＣＲ－ＲＦＬＰ核苷酸分型方法，探讨了我国南方浙江沪汉族人群ＨＬＡ－ＤＱＢ１基因多态性与系统红斑狼疮（ＳＬＥ）的遗传关联性，对４８例ＳＬＥ患者的血样分析表明，ＳＬＥ患者具有显著高的ＤＱＢ１＊０６０１等位基因频率（３０．２１％，ＲＲ＝２．８９１９，Ｐｃａｒｒ＝０．０１１２，ＥＦ＝０．２０），ＤＱＢ１＊０６０１可能是一易感基因，而ＤＱＢ１＊０３０１（２．０８％，ＲＲ＝０．１１０８，Ｐｃｏｒｒ＝０，     

江浙沪地区HLA-DQB1基因对重症肌无力的遗传易感性研究

探讨中国汉人ＭＧ易感性与ＨＬＡ－ＤＱＢ１基因多态性的相关。方法：运用ＰＣＲ－ＲＦＬＰ法进行ＨＬＡ－ＤＱＢ１基因分型。结果：ＭＧ病例组与对照组比较都有ＤＱＢ＊０３０３频率的明显增高,ＤＱＢ＊０６０１和ＤＱＢ１＊０．６０２频率的明显降低,差异都有显著性。结论：ＤＱＢ１＊０３０３参与中国汉人ＭＧ的易感性,而ＤＱＢ１＊０６０１和ＤＱＢ１＊０６０２是保护基因。     

西双版纳傣族及上海汉族群体HLA－DR2相关的DR／DQ单倍型分析

对４４名西双版纳傣族和９名上海地区汉族ＤＫ２阳性个体进行了与其相关的ＤＲ／ＤＱ单倍型组合的分析。傣族群体中ＤＲＢＩ－ＤＲ２亚型分布以＊１６０２与＊１５０２为最常见，其等位基因频率分别为４３．６％与，４０．０％和汉族群体中以＊１５０１为主明显不同。傣族群体中共检出１０种与ＤＲ２相关联的ＤＲ／ＤＱ单倍型；最常见的是ＤＲＢ１＊１６０２、ＤＲＢ５＊０１０１、ＤＱＡ１＊０１０２、ＤＱＢ１＊０５０２（３４．５％）与汉族及其他群体明显不同，本研究表明傣族不仅具有高频率的ＤＲ２，而且与ＤＲ２相关联的ＤＲＢ１、ＤＲＢ５、ＤＱＡ１、ＤＱＢ１单倍型组合有其独特性。     

PCR/SSP结合PCR/SSCP分析湖南汉族HLA-DQA1等位基因多态性

为准确阐明湖南汉族群体ＨＬＡ－ＤＱＡ１遗传多态性,采用ＰＣＲ／ＳＳＰ方法,并联合应用可同时区分ＨＬＡ－ＤＱＡ１＊０１０１～０６０１等位基因的银染ＰＣＲ／ＳＳＣＰ技术对６０例随机选择的湖南汉族健康者作ＨＬＡ－ＤＱＡ１等位基因分型。结果表明,湖南汉族存在...     

中国汉人HLADQAl基因对系统性红斑狼疮的遗传易感性研究

利用ＨＬＡ基因的ＰＣＲ－ＲＦＬＰ核苷酸分型技术，以等位基因特异性的限制性内切酶（ＡｐａｌⅠ、ＢｓａｊⅠ、ＨｐｈⅠ、ＦｏｋⅠ、ＭｂｏⅡ、ＭｎｌⅡ）消化ＤＱＡｌ座位特异的ＰＣＲ扩增产物，研究了上海及其附近地区中国汉人ＨＬＡ－ＤＱＡｌ基因与系统红斑狼疮的遗传关联。发现系统红斑狼疮ＤＱＡｌ＊０１０２（３６．５％，ＲＲ＝２．２５，Ｐ＜０．０５，ＥＦ＝０．２０）及＊０４０１（１５．４％，ＲＲ＝１２．４２，Ｐ＜０．００５，ＥＦ＝０．１４）显著增加，而ＤＱＡｌ＊０５０１（１１．５％，ＲＲ＝０．２１，Ｐ＜０．００５，ＰＦ＝０．３１）和＊０．０６０１（３．９％，ＲＲ＝０．２７，Ｐ＜０．０５，ＰＦ＝０．０９）显著下降。排除ＤＱＡｌ＊０４０１的影响后，＊０１０２频率的升高表现得更加明显（ＲＲ＝２．８４，Ｐ＜０．０１）。上述发现显示：ＤＱＡｌ＊０１０２及＊０４０１对ＳＬＥ有遗传易感作用，而ＤＱＡｌ＊０５０１和＊０６０１有遗传抵抗作用，并提出了有关可能的单体型。     

中国广东汉族群体HLAⅡ类基因多态性的研究

为探讨中国广东汉族群体ＨＬＡⅡ类基因多态性，采用ＰＣＲ／ＳＳＯ方法，随机选择１０２名广东籍汉族人进行了ＨＬＡⅡ类基因的ＤＮＡ分型。测定了包括ＨＬＡ－ＤＲＢ１，ＤＲＢ３，ＤＲＢ５，ＤＱＡ１，ＤＱＢ１和ＤＰＢ１等６个基因座位的等位基因。结果：共检出２３种ＤＲＢ１，３种ＤＲＢ３，４种ＤＲＢ５，８种ＤＱＡ１，１２种ＤＱＢ１和１２种ＤＰＢ１基因。该人群的ＨＬＡⅡ类等位基因多态性的典型性表现在ＨＬＡ－ＤＲＢ＊１２０２的不寻常优势和ＤＲＢ１＊０２单倍型的结构的高度复杂性。还发现了很高频率的一个近年才被正式命名的ＤＰ新型：ＨＬＡ－ＤＰＢ１＊２１０１，并且此型具有极不寻常的ＤＲＢ１＊１２０２－ＤＰＢ１＊２１０１的连锁不平衡。为分子流行病学研究提供了资料。     

云南汉族系统性红斑狼疮的易感及抵抗单体型研究

目的：探讨云南汉族系统性红斑狼疮（SLE）在HLA－DRB1、DQA1、DQB1等座位的易感抵抗单体型,方法：采用多聚酶链反应－序列特异性引物（PCR－SSP）技术对63例动态汉族SLE患者及54名同民族健康对照进行DRB1、DQA1、DQB1基因分型。结果：与正常对照组比较,SLE病人中有5个单体型频率显著升高;11个单体型频率在病例组中明显降低。结论：云南汉族SLE的易感单体型为DQA1^*0102-DQB1^*0601,DR15-DQA1^*0102-DQB1^*0601,DR15-DQA1^*0102-DQB1^*0602,DR15-DQA1^*0101-DQB1^*0601,DR15-DQA1^*0103-DQB1^*0601;其余均为低抗单体型。     

系统性红斑狼疮临床表现与HLA Ⅱ类单倍型关联的研究

目的 探讨系统性红斑狼疮（ＳＬＥ）易感基因致病的模式。方法 利用多聚酶链反应／特异寡核控针杂交（ＰＣＲ／ＳＳＯＰＨ）方法检测１１３例确诊ＳＬＥ病人的ＨＬＡⅡ基因型并进行单倍型分析。结果 ＳＬＦ病人的单倍型具有特定的结构特征,即以２个或３个重型ＳＬＥ相关基因共同组成１个单倍型;反之,２个或３个轻型ＳＬＥ相关基因组成另１个单倍型;重型基因和轻型基因之间很少有强连锁不平衡。ＤＱＡ１＊０３０１－ＤＱＢ１＊     

Novel HLA-DR2 and -DR3 haplotypes among Norwegian Caucasians

In the Northern European population, all DR2 haplotypes encoded by DRB1*1501 have previously been found to carry the DQA1*0102 and DQB1*0602 alleles, and DR3 haplotypes have been found to carry the DQA1*0501 and DQB1*0201 alleles. Here we report a novel recombinant DR2 haplotype carrying the DRB1*1501, DQA1*0102 and DQB1*0603 alleles as well as a novel recombinant DR3 haplotype carrying the DRB1*0301, DRB3*0101, DQA1*0102 and DQB1*0602 alleles.     

DQB1*0301 and DQB1*0601 modulate narcolepsy susceptibility in Koreans

The association of narcolepsy with HLA-DQB1*0602 is established in Japanese, African-Americans, European, and North American Caucasians. We examined DRB1, DRB3, DRB4, DRB5, DQA1, and DQB1 in 163 patients with centrally mediated daytime sleepiness (100 with narcolepsy) and 211 Korean controls. In this population, the DQB1*0602 association was always evident in the context of the DRB1*1501-DQA1*0102-DQB1*0602 haplotype. The DQB1*0602 association was highest in cases with hypocretin deficiency (100% vs 13% in controls), most of which had narcolepsy-cataplexy (81%). A weaker DQB1*0602 (45%) association was present in cases without cataplexy. No human leukocyte antigen (HLA) association was present in idiopathic hypersomnia or in cases with normal cerebrospinal fluid (CSF) hypocretin-1. As in other populations, DQB1*0602 homozygosity increased risk in cases with cataplexy and/or hypocretin deficiency (odds ratio = 2.0 vs heterozygotes). Non-DQB1*0602 allelic effects were also observed but could not be interpreted in the context of DQB1*0602 overabundance and linkage disequilibrium. We therefore next analyzed compound heterozygote effects in 77 subjects with either hypocretin deficiency or cataplexy and one copy of DRB1*1501-DQA1*0102-DQB1*0602, a sample constructed to maximize etiologic homogeneity. In this analysis, we found additional predisposing effects of DQB1*0301 and protective effects for DQA1*0103-DQB1*0601. Unexpectedly, the predisposing effects of DQB1*0301 were present in the context of various DQA1-bearing haplotypes. A predisposing effect of DQA1*0303 was also suggested. These results indicate a remarkable consistency in the complex HLA association present in narcolepsy across multiple ethnic groups.     

HLA class II (DRB1, DQA1 and DQB1) associated genetic susceptibility in Iranian multiple sclerosis (MS) patients

The association of HLA class II alleles with multiple sclerosis (MS) has been amply documented. In the present study, the role of HLA class II (DRB1, DQA1 and DQB1) alleles and haplotypes was investigated in 43 unrelated Iranian chronic progressive multiple sclerosis (CP-MS) patients compared with 100 healthy individuals. HLA typing for DRB1, DQA1 and DQB1 was performed by restriction fragment length polymorphism (RFLP). Subtypes of DR4, DR15 and DR16 were defined using polymerase chain reaction (PCR) amplification with sequence-specific primers (PCR-SSP). The results show that, among DR2-positive MS patients and the control group, a positive association with the DRB1*1503, DQA1*0102, DQB1*0602 haplotype (21% vs. 2.7%, P=0.057, RR=9.8) and a negative association with the most frequent DR15 haplotype in the control group, DRB1*15021, DQA1*0103, DQB1*0601 (7% vs. 24.3%, P=0.001), were observed. No significant association was found with the analysed HLA-DRB1, DQA1 and DQB1 alleles.     

HLA class II haplotypes in primary sclerosing cholangitis patients from five European populations

The association of primary sclerosing cholangitis (PSC) to HLA class II genes was studied by comparing patients from five different European populations. Deduced HLA-DRB1, DQA1, DQB1 haplotypes of 256 PSC patients from England, Italy, Norway, Spain and Sweden were compared to those observed in 764 ethnically-matched controls. Increased frequencies of the DRB1*03, DQA1*0501, DQB1*02 (RR=3.0, P<0.00001) and the DRB1*13, DQA1*0103, DQB1*0603 haplotypes (RR=2.4, P<0.0001) were observed in all five patient groups. A total of 16% of the PSC patients were homozygous for the DRB1*03, DQA1*0501, DQB1*02 haplotype compared to 1% of the controls (RR=20, P<0.0001). The DRB1*04, DQA1*03, DQB1*0302 haplotype was significantly reduced in frequency(RR=0.4, P<0.00001). Among Norwegian, Swedish and British patients that did not carry neither the DRB1*03, DQA1*0501, DQB1*02 nor the DRB1*13, DQA1*0103, DQB1*0603 haplotype, an increased frequency of the DRB1*15, DQA1*0102, DQB1*0602 haplotype was observed (RR=2.0, P<0.0001). Thus, PSC was found to be positively associated to three different HLA class II haplotypes (i.e. the DRB1*03, DQA1*0501, DQB1*02, the DRB1*15, DQA1*0102, DQB1*0602 and the DRB1*13, DQA1*0103, DQB1*0603 haplotypes) and negatively associated to one HLA class II haplotype (i.e. the DRB1*04, DQB1*0302 haplotype).     

HLA-DQA, -DQB AND -DRB ALLELE CONTRIBUTION TO NARCOLEPSY SUSCEPTIBILITY

The association of narcolepsy with HLA class I antigens and HLA class II alleles was studied in a series of Spanish narcoleptic patients. The haplotype DRB1*1501-DRB5*0101-DQA1*0102-DQB1*0602 was found to be significantly associated with the disease, while the haplotype DRB1*0701-DRB4*01-DQA1*0201-DQB1*02 might confer a slight protective effect against narcolepsy. Gene dose–effect was not seen in any of the involved alleles, and linkage disequilibrium between the positively associated alleles was found to be stronger in patients than in controls. Statistical analysis applied to identify the HLA allele truly responsible for the association did not clearly discriminate between the contribution of DRB1*1501 and that of DQB1*0602, but it proved that the association with DQA1*0102 is secondary to that with DRB1*1501/DQB1*0602. Analysis of the diagnostic value of typing for the narcolepsy-associated alleles demonstrated a very high negative predictive value and revealed that this test can be convenient for exclusion of narcolepsy in cases when the diagnosis is not evident after clinical evaluation and the marker haplotype is absent. Finally, a family study indicated that narcolepsy is a multifactorial disorder that involves HLA genes under an incomplete penetrance model, with possible influences from environmental factors or other genes different to HLA genes.     

Novel HLA-DR2-related haplotypes in Hong Kong Chinese implicate the DQB1*0602 allele in susceptibility to multiple sclerosis.

Multiple sclerosis (MS) is strongly associated with the HLA-Dw2 haplotype DRw15.DQw6 in Caucasoids, although the relative contributions of DR and DQ loci to disease susceptibility are unknown. The situation is further complicated by the apparent lack of an association between DR2 and MS in Orientals. This study examined 42 DR2-positive chromosomes in healthy Chinese and 12 DR2-positive chromosomes in MS patients from Hong Kong, using oligonucleotide hybridizations of DQA1, DQB1, DRB1, and DRB5 polymerase chain reaction (PCR) products. There was marked heterogeneity in DR2-related haplotypes in controls (ten types), where the most frequent haplotype, confirmed in one family, involved the novel arrangement DRB1*1501, DQB1*0601. Another common haplotype had the unusual combination of DRB1*1602, DRB5*0101 as confirmed by DNA sequencing of the DRB5 allele. In contrast, the most common DR2-related haplotype in MS patients was the 'classical' Dw2 haplotype DRB1*1501, DQB1*0602, with a frequency of 50% compared with 12% in controls (P = 0.01). Novel DR,DQ linkage disequilibrium relationship in Hong Kong Chinese have permitted recognition of DQB1*0602 as a susceptibility allele in DR2-positive MS patients, although a role for the DRB1*1501 allele in MS pathogenesis has not been excluded by this study.     

HLA-DQ多态性基因与系统性红斑狼疮易感性

采用PCR-SSO方法对江苏籍汉族SLE患者和正常对照组HLA-DQ作基因分型.结果显示,患者组中DQA1*0102频率(RR=3.43.Pc=0.03164)及HLA-DQA1*0102,DQB1*0601和HLA-DQA1*0102,DQB1*0602单倍型频率(RR=9.4,P=0.027和RR=12.4.P=0.007)均明显高于正常对照组.相反,DQA1*0601频率则显著低于正常对照组(RR=0.29,Pc=0.0461).但没发现任何DQB1等位基因与SLE有关.这提示在汉族SLE与HLA-DQ基因的相关性方面,DQA1*0102起主导作用.DQA1*0102或某个与其紧密连锁的其它基因可能是汉族SLE的易感基因,而DQA1*0601则可能对SLE的发病有一定的保护性.