Relationship between Single Nucleotide Polymorphisms in -174G/C and -634C/G Promoter Region of Interleukin-6 and Prostate Cancer

The association between the single nucleotide polymorphisms （SNPs） in -174G/C and -634C/G of interleukin-6 （IL-6） promoter region and prostate cancer was examined in the population of Han people in Hubei region. TaqMan PCR was employed for the gene-typing of -174G/C and -634C/G in promoter region of IL-6 gene to compare the prostate cancer patients and normal controls in terms of genotype frequency, allele frequency and risk of prostate cancer. Enzyme-linked immu- nosorbent assay （ELISA） was used for the detection of IL-6 concentration in peripheral blood of the patients with prostate cancer and the relationship between the IL-6 level and the genotype was studied. Our results showed that in all the subjects, the genotype of genetic locus -174G/C was found to be GG and no CG and CC were observed. There was a significant difference in gene frequency of GG, CG and CC of -634C/G and allele frequency of G and C between prostate cancer patients and normal controls （P〈0.05） and the gene frequency of GG＋CG increased with the clinical stages and pathological grades of prostate cancer. The IL-6 level in GG＋CG group was significantly higher than that in CC group. It was concluded that no SNP in -174G/C IL-6 promoter region was found in the population of Han people in Hubei region. The SNP in -634C/G was, to some extent, associated with the development and progression of prostate cancer. The population with GG＋CG genetype has higher risk for prostate cancer.     

人趋化素样因子上游启动子区的单核苷酸多态性及其与哮喘的相关性

目的 寻找趋化素样因子(CKLF)基因上游启动子区的单核苷酸多态性(SNP),明确其与支气管哮喘发病的相关性.方法 提取245例北京地区汉族人(其中哮喘患者119例,健康对照126例)基因组DNA,采用PCR方法扩增CKLF上游启动子区1553碱基的DNA片段并进行直接测序,分析发现的SNPs的等位基因频率、基因型频率和单倍型分布频率及其与哮喘的发病和临床表现的相关性.结果 在CKLF上游启动子区共发现4个SNPs:SNP88(T>C)、SNPl96(T>C)、SNP568(C>G)、SNP1047(C>G).其等位基因频率分别为0.168(SNP88C)、0.168(SNP196C)、0.352(SNP568G)和0.167(SNP1047G),与以往报道的其他种族的结果明显不同.SNP88与SNP196之间、SNP88与SNP1047之间,以及SNP196与SNP1047之间存在完全连锁不平衡(D1=1.000,r2=1.000),SNP568与SNP88、SNP196及SNP1047问存在连锁不平衡(r2=0.366).哮喘组与对照组4个SNPs的等位基因频率、基冈型频率和单倍型频率差异无显著性.结论 北京地区汉族人群CKLF编码基因上游调控区的基因多态性有其独特的分布特点及连锁不平衡特征,虽然与哮喘的发病无明显相关性,但其分布特点可能为其他疾病相关性研究提供有价值的资料.     

2型糖尿病抵抗素基因单核苷酸多态性(SNPs)及胰岛素抵抗相关因素研究

目的：研究内蒙古地区汉族2型糖尿病人抵抗素基因5’端调节区单核苷酸多态性（SNPs）及胰岛素抵抗、血脂关系。方法：对81名2型糖尿病患者（分肥胖、非肥胖2组）及40名非糖尿病患者抵抗素基因测序分析,比较3组间SNPs及胰岛素敏感指数（ISI）、甘油三酯（TG）、总胆固醇（TC）、高密度脂蛋白（HDL—C）。结果：3组抵抗素基因5’端调节区等位基因频率比较显示组间无统计学差异。糖尿病肥胖组和非肥胖组胰岛素敏感指数（ISI）与对照组比较,差异有显著性（均为P〈0．01）,糖尿病肥胖组和非肥胖组胰岛素敏感指数（ISI）比较差异也有显著性（P〈0．05）,糖尿病肥胖组和非肥胖组甘油三酯均高于对照组（均为P〈0．01）。糖尿病肥胖组和非肥胖组之间比较,差异也有显著性（P〈0．05）。糖尿病肥胖组血HDL—C低于糖尿病非肥胖组和对照组,差异有显著性（分别为P〈0．05,P〈0．01）,而糖尿病非肥胖组和对照组之间比较无统计学差异（P〉0．05）,糖尿病非肥胖组和对照组之间比较无统计学差异（P〉0．05）。结论：内蒙古地区汉族2型糖尿病人与抵抗素基因5’端调节区单核苷酸多态性（SNPs）没有显著相关性。胰岛素抵抗与肥胖密切相关。2型糖尿病脂代谢紊乱是甘油三酯紊乱合并HDL—C紊乱,与肥胖密切相关。     

纤溶酶原激活物抑制物1及4G/5G多态性与术后深静脉血栓的关系

目的:探讨血浆纤溶酶原激活物抑制物1(PAI 1)水平在手术前、后的改变,分析PAI 1水平改变及 其基因4G/5G多态性与手术后深静脉血栓(DVT)形成的关系。方法:发色底物法检测24例正常对照和29例 行中等手术治疗患者术前、术后24h、术后72h血浆PAI 1活性,运用聚合酶链反应(PCR)技术检测各研究个体 的基因型。结果:(1)PAI 1活性与甘油三酯之间有显著相关性(r=0.583;P<0.01);(2)PAI 1活性在手术后 24h,72h较术前有增高的趋势,但差异无统计学意义;(3)各不同基因型患者之间手术前后PAI 1活性变化差异 无显著性。结论:(1)手术后患者机体纤溶功能受到一定程度的抑制;(2)PAI 1及其基因4G/5G多态性在行中 型手术治疗患者中,不能作为手术后DVT形成的高危预测因素。手术后DVT的形成可能与手术的类型、大小、 部位以及手术后长期卧床等其它高危因素有关。