维生素D受体基因多态性与乙型肝炎病毒感染的关联研究

目的探讨中国汉族人群维生素D受体（vitamin D receptor，VDR）基因多态性是否与乙型肝炎病毒（hepatitis B virus，HBV）感染结局相关联。方法以184例慢性乙肝患者和205名无症状HBV携带者为研究对象，收集外周血，提取基因组DNA，应用聚合酶链反应．限制性片段长度多态性（polymerase chain reaction-restriction fragmentlength polymorphism，PCIR-RFLP）方法，分析VDR基因第2外显子Fok Ⅰ位点、第9外显子Taq Ⅰ位点的多态性分布。结果单因素分析结果显示Fok Ⅰ位点FF基因型在慢性乙肝组的频率44．6％显著高于无症状HBV携带组的31．7％（P〈0．05）。经多因素非条件Logistic回归分析调整混杂作用后，结果仍然显示FF基因型在慢性乙肝组与无症状HBV携带组之间的差异存在统计学意义（OR=1．95，P〈0．05）。FokⅠ位点与TapⅠ位点组成的FT单倍型在慢性乙肝组的分布频率显著高于无症状HBV携带组（OR=1．45，P〈0．05），fT单倍型在慢性乙肝组的分布频率显著低于无症状HBV携带组（OR=0．72，P〈0．05）。结论维生素D受体基因多态性可能影响HBV感染的遗传易感性。     

HLA-DRB1 ALLELES GENOTYPING IN PATIENTS WITH RHEUMATOID ARTHRITIS IN CHINESE

ＨＬＡ－ＤＲＢ１ＡＬＬＥＬＥＳＧＥＮＯＴＹＰＩＮＧＩＮＰＡＴＩＥＮＴＳＷＩＴＨＲＨＥＵＭＡＴＯＩＤＡＲＴＨＲＩＴＩＳＩＮＣＨＩＮＥＳＥＺｈａｏＹａｎ（赵岩）；ＤｏｎｇＹｉ（董怡）；ＺｈｕＸｉｌｉｎ（朱席林）ａｎｄＱｉｕＣｈａｎｇｃｈｕｎ（邱长春）（Ｎ...     

RAPID HLA-DRB1 GENERIC TYPING BY PCR-SSP METHOD

We report a simple and rapid HLA-DRB1 generic typing metbod,PCR-SSP,which is practical and inexpensive.We use 9 sequence-specific primers and 2 group specific primers to define the HLA-DRB1 specificities DR1,DR2,DR3,DR4,DR5,DR6,DR7,DR8,DR9 and DR10. The HLA DR3,DR5,DR6 and DR8 can be amplified by the two primers of DR3568 are positive.Any individuals can be typed with some exception: the three pairs of phenotype DR3/DR3 and DR3/DR6,DR5/DR5 and DR5/DR6, DR8/DR8 and DR8/DR6 cannot be discriminated from each other.We typed 106 unrelated healthy people from Beijing locations in two weeks.We think this typing method is suitable to replace the error-Prone serologic HLA-DR tests in routine clinical practice,including the prospective typing of cadaveric organ donors.