武汉汉族人群rs1799983基因多态性和肥胖在冠心病中交互作用研究

目的探讨武汉汉族人群rs1799983多态性与冠心病关联性及其与肥胖交互作用。方法选取2014年2月~2015年8月于武汉市第五医院心血管科住院CHD患者120例作为实验组,同时选取体检中心健康汉族个体140例作为对照组,均为武汉籍汉族。采用多聚酶链反应-限制性片段长度多态性(PCR-RFLP)方法分析120例CHD患者(实验组)和140名正常对照rs1799983基因型(对照组)。非条件Logistic分析各基因型与发病中易感性关系以及与肥胖的交互作用。结果携带C(CC/CT)基因个体患病风险较非C基因携带者(TT)风险明显增加1.55倍(OR=1.55,95%CI:1.41~3.71,P0.001;校正OR=1.79,95%CI:1.51~4.01,P0.001);非条件Logistic分析表明携带CC/CT基因型肥胖个体CHD罹患风险是携带TT基因非肥胖个体的3.88倍(OR=3.88,95%CI:2.72~5.76,P0.001);RERI=2.51,95%CI:1.22~3.80;AI=0.54,95%CI:0.34~0.74;S=1.56,95%CI:1.12~2.83。结论 e NOS rs1799983多态性增加武汉汉族个体CHD罹患风险,且与肥胖存在CHD发病中存在协同效应。     

脂蛋白脂酶基因多态性与中青年原发性高血压的相关性研究

目的:探讨中国中青年汉族人群中脂蛋白脂酶(LPL)单核苷酸基因多态性(SNP)与原发性高血压(EH)易感性的关系。方法:根据一定的纳入和排除标准筛选高血压患者及健康体检人群,收集临床资料,采集血液标本,采用TaqMan-MGB法检测LPL基因rs253和rs328位点多态性,分析基因多态性与中青年原发性高血压发病率的相关性。结果:病例组入选499例,对照组入选336例,两组之间性别、年龄、吸烟比例、血肌酐水平差异无统计学意义,饮酒、家族史、血压、血糖等指标有统计学差异。不同基因型在病例组与对照组的分布:rs253位点CC、CT、TT基因型分布有统计学差异(P=0.044),rs328位点等位基因G、C分布频率有统计学差异(P0.001)。将总体按BMI是否25 kg/m~2和是否有血脂异常分层并进行多种基因模型分析,结果显示在中青年肥胖人群(BMI≥25 kg/m~2)中,rs253位点隐性模型CC vs CT+TT中基因型频率分布有统计学差异(P=0.002);在血脂异常的人群中,rs253位点隐性模型CC vs CT+TT基因型频率分布有统计学差异(P=0.020)。Logistic回归分析校正性别、年龄、吸烟、饮酒、家族史、BMI、血脂等多个混杂因素后,结果依然显示,在中青年肥胖人群中,rs253位点隐性模型与高血压发病风险显著相关(P=0.017,OR=0.598,95%CI:0.393～0.912);在有血脂异常的人群中,该模型亦与高血压发病风险相关(P=0.037,OR=0.652,95%CI:0.436～0.975)。结论:在国内中青年汉族肥胖人群以及有血脂异常的人群中,LPL基因rs253位点多态性可能与EH发生相关,该位点CC基因型较CT和TT发病风险明显降低;rs328位点则未见与EH明显相关性。     

G蛋白β3亚单位基因825C/T多态性与中国人群原发性高血压相关性的Meta分析

目的系统评价G蛋白β3亚单位(GNB3)基因825C/T多态性与中国人群原发性高血压(EH)发病风险的关系。方法由两名评价者独立检索PubMed、EMbase、CNKI、CBM和WanFang数据库,收集探讨GNB3基因825C/T多态性与中国人EH相关性的病例-对照研究,检索时限均为建库至2013年9月30日。文献筛选及资料提取后,对纳入文献按NOS进行质量评价,然后采用Stata12.0软件行Meta分析。结果最终纳入30个病例-对照研究,包括EH患者5054例,对照人群5565例。Meta分析结果显示,与对照组相比,GNB3基因825C/T多态性与中国人EH发病风险间无统计学差异[TT vs.CC:(OR=1.13,95%CI:0.89~1.43,P=0.33);TT vs.CT+CC:(OR=1.04,95%CI:0.86~1.26,P=0.70);CT vs.CC:(OR=1.08,95%CI:0.98~1.19,P=0.11);TT+CT vs.CC:(OR=1.11,95%CI:0.96~1.29,P=0.15);T vs.C:(OR=1.06,95%CI:0.95~1.20,P=0.30)]。结论当前证据表明中国人群GNB3基因825C/T多态性与EH发病无关。     

诱导型一氧化氮合酶基因多态性与冠心病的关联性研究

目的探讨一氧化氮合酶(i NOS)基因多态性与冠心病的关联性。方法病例组为291例冠心病患者,年龄、性别匹配的健康体检者487例为对照组。采用Taqman探针荧光定量PCR技术检测rs2779248 C/T、rs1137933 C/T的基因型分布情况。结果经校正传统危险因素后,携带rs2779248 TT基因型的个体患冠心病的风险比携带CC基因型的高2.58倍(95%CI:1.01~6.67);而携带rs1137933 CT+TT基因型的个体患冠心病的风险比携带CC基因型的高1.36倍(95%CI:1.00~1.85),突变T等位基因可能增加冠心病发病风险(OR=1.36,95%CI:1.04~1.77)。各基因型间空腹血糖水平存在明显差异。结论 i NOS基因多态性与中国汉族人群冠心病发病风险相关,i NOS基因可能通过调节血糖影响冠状动脉粥样硬化斑块形成,进而增加冠心病的发病风险。     

hTERT rs2736098、rs2075786及rs2736100位点多态性与中国人群肝癌易感性的meta分析

目的研究端粒酶逆转录基因多态性与中国人群肝癌易感性的关系。方法计算机检索中国知网(CNKI)、万方、pubmed、Web of science、EMBASE等数据库有关端粒酶逆转录基因多态性与中国人群肝癌易感性相关性的研究,按照标准纳入文献,提取数据,采用RevMan5.3和stata15.1软件进行meta分析。结果共纳入7篇文献,累计病例数2 564例,对照组2 770例。meta结果显示,rs2736098位点上,携带至少一个等位基因A的个体肝癌发病风险是携带GG基因型个体的1.28倍[OR=1.28,95%CI(1.01,1.62)];携带GA或AA基因型的个体罹患肝癌的风险是携带GG基因型个体的1.25倍[OR=1.25,95%CI(1.01,1.54)]。rs2075786位点上,携带等位基因T罹患肝癌的风险是携带等位基因C个体的1.92倍[OR=1.92,95%CI(1.52,2.43)]。结论 hTERT rs2736098位点,rs2075786位点多态性与中国人群肝癌易感性有关,rs2736100位点多态性并不能增加罹患肝癌的风险。     

miR-143/145基因多态性与大动脉粥样硬化型卒中遗传易感性的关系

目的探讨miR-143/145的编码基因启动子区域rs4705342多态性与中国汉族人群大动脉粥样硬化型(LAA)卒中的关系。方法基于南京卒中注册系统,连续纳入了2013年8月至2016年12月于南京军区南京总医院神经内科就诊的1 066例LAA卒中患者,同期纳入1 152例健康体检未患有心脑血管疾病以及动脉粥样硬化的当地成年(年龄≥18岁)汉族居民作为对照组。通过SNPscan技术对rs4705342进行基因分型。采用多因素回归分析方法分析rs4705342多态性与LAA卒中风险的相关性,并根据各风险因素进行分层分析。结果在显性模型中,携带TC/CC基因型较携带TT基因型者发生LAA卒中的风险降低(校正OR=0.79,95%CI:0.65～0.96,校正P=0.018)。分层分析显示,年龄≥60岁(OR=0.71,95%CI:0.54～0.95)、无糖尿病史(OR=0.76,95%CI:0.61～0.95)及无吸烟史(OR=0.74,95%CI:0.58～0.95)人群中,携带TC/CC基因型较携带TT基因型发生LAA卒中的风险显著降低(均P0.05)。结论 miR-143/145编码基因启动子区域rs4705342 TC/CC基因型与中国汉族人群较低的LAA卒中的发病风险相关。     

PSCA rs2294008基因多态性与胃癌癌前病变的相关性研究

背景:胃癌在病因学上是幽门螺杆菌(Hp)感染、环境因素和宿主遗传因素之间相互作用的结果。既往研究显示前列腺干细胞抗原(PSCA)基因rs2294008位点多态性与非贲门部胃癌风险增加显著相关。目的:探讨PSCA rs2294008位点多态性与胃癌癌前病变的关系。方法:收集2009年11月—2015年11月青岛市市立医院398例胃癌癌前病变患者(肠上皮化生328例,上皮内瘤变70例),同期416例健康体检者作为对照组。采用PCR直接测序法检测PSCA rs2294008位点基因型,快速尿素酶试验检测Hp感染状态。结果:病例组PSCA rs2294008位点CC、CT、TT基因型分布与对照组相比差异有统计学意义(P=0.011),病例组TT基因型频率显著高于对照组(16.3%对9.4%,P=0.003)。与CC基因型携带者相比,TT基因型携带者胃癌癌前病变风险显著增加(OR=1.840,95%CI:1.174~2.886)。以Hp阴性且携带CC+CT基因型者为参照,单独携带TT基因型仅轻微增加胃癌癌前病变风险(OR=1.783,95%CI:0.900~3.530),而单独Hp感染(OR=2.389,95%CI:1.799~3.173)和Hp感染且携带TT基因型(OR=3.335,95%CI:1.935~5.749)可使发病风险显著增加,后者作用更为显著。结论:PSCA rs2294008位点多态性与胃癌癌前病变易感性显著相关,Hp感染可进一步增加TT基因型携带者的发病风险。     

VEGF基因多态性及吸烟在诱发非酒精性脂肪肝中的交互作用

目的观察非酒精性脂肪肝(NAFLD)患者血管内皮生长因子(VEGF)基因rs833061、rs3025039位点多态性,并探讨其多态性及吸烟在诱发NAFLD中的交互作用。方法选择NAFLD患者341例(NAFLD组)、健康体检者246例(对照组),采用PCR-RFLP法分析VEGF基因rs833061、rs3025039位点基因型,非条件Logistic回归分析法分析各基因型与NAFLD易感性的关系,非条件Logistic回归分析法和广义多因子降维法分析VEGF基因多态性及吸烟在诱发NAFLD中的交互作用。结果 VEGF基因rs833061位点C基因携带者(CC+CT)罹患NAFLD的风险较非C基因携带者(TT)升高(P均<0.01),rs3025039位点T基因携带者(TT+CT)患病风险较非T基因携带者(CC)风险升高(P均<0.01)。VEGF基因rs833061位点多态性与吸烟可能在NAFLD发病过程中存在相加作用(P<0.01),rs833061位点CC/CT基因型吸烟个体罹患NAFLD风险是携带TT基因型非吸烟个体的4.93倍。结论VEGF基因多态性与NAFLD发病有关,VEGF基因rs833061位点多态性与吸烟在诱发NAFLD过程中具有协同效应。     

原纤维蛋白-1基因多态性与汉族人群散发性急性主动脉综合征的相关性

目的探讨汉族人群中原纤维蛋白-1基因(FBN-1)rs2118181位点的多态性与散发性急性主动脉综合征(AAS)的关系。方法从206例AAS患者和209例对照组对象的外周静脉全血提取基因组DNA,对目标片段进行PCR扩增后,利用双脱氧链终止法进行测序,分析rs2118181位点的等位基因类型。结果 AAS组和主动脉壁间血肿(IMH)亚组的TT基因型的频率显著高于对照组,差异有统计学意义(P0.05)。显性基因型模型显示,携带C等位基因的个体罹患AAS(OR0.66,95%CI 0.45~0.98,P=0.040)尤其是IMH(OR 0.46,95%CI 0.24~0.87,P=0.016)的风险显著低于TT基因型个体;在校正年龄、性别、体质量指数、高血压病、吸烟史、糖尿病等危险因素后,logistic回归分析显示C等位基因个体罹患AAS的风险仍低于非携带个体(OR 0.66,95%CI 0.44~0.99,P=0.048)。IMH亚组与主动脉夹层亚组患者的FBN-1 rs2118181位点基因分布比较,差异无统计学意义(P0.05)。结论 FBN-1 rs2118181基因多态性与中国汉族人群散发性AAS,尤其散发性IMH的发病可能相关,TT基因型是散发性AAS,尤其是散发性IMH的遗传易感因素之一。     

内皮型一氧化氮合酶基因标签单核苷酸多态性与新疆哈萨克族原发性高血压的关联研究

目的:探讨新疆哈萨克族人群内皮型一氧化氮合酶(eNOS)基因标签单核苷酸多态性与原发性高血压之间的关系。方法:采用流行病学病例—对照研究,酚—氯仿法进行DNA抽取及纯化,用SNaPshot分型技术对新疆哈萨克族363例原发性高血压患者(病例组)和370例健康对照者(对照组)进行eNOS基因的6个标签单核苷酸的多态性(tSNP)rs1800783、rs7830、rs3918188、rs1799983、rs2070744和rs1800779分型,并测定十项生化指标,测量体重指数、腰臀比等指标。结果:新疆哈萨克族人群eNOS基因6个tSNP在病例组各基因型频率和等位基因频率与对照组分布差异无统计学意义(P>0.05)。性别分层发现eNOS基因rs1799983男性病例组与对照组G和T等位基因频率差异有统计学意义(P<0.05),男性病例组G等位基因频率(80.8%)低于对照组(87.9%),而T等位基因频率(19.2%)高于对照组(12.1%),T等位基因患病风险为G等位基因的0.587倍(95%CI 0.370～0.901,P=0.015)。发现除rs1800783、rs1800779、rs2070744位点间存在强的配对连锁不平衡外,其它tSNP各位间不存在配对强连锁不平衡,所构建的单体型在病例组和对照组的分布频率差异无统计学意义(P>0.05)。结论:eNOS基因rs1799983 T等位基因可能是新疆哈萨克族男性原发性高血压的遗传易感基因;rs1800783与rs1800779、rs2070744位点间存在强连锁不平衡;6个tSNP构建的单体型与原发性高血压无相关性。     

Associations of CYP4A11 gene–gene and gene–smoking interactions with essential hypertension in the male eastern Chinese Han population

Objectives: The aim of this study was to investigate the impact of CYP4A11 single-nucleotide polymorphisms (SNP), additional gene–gene and gene–environment interactions on essential hypertension (EH) risk. Methods: A total of 1648 participants (788 males, 860 females), with a mean age of 56.1 ± 14.1 years old, were selected, including 820 EH patients and 828 normotension subjects. Logistic regression was performed to investigate association of SNPs within CYP4A11 gene with high DBP, high SBP and EH risk, and generalized multifactor dimensionality reduction (GMDR) was used to analyze the gene–gene interaction and gene–smoking interaction. Results: Logistic regression analysis showed that EH risk was significantly higher in carriers of C allele of the rs1126742 polymorphism than those with TT genotype (TC+CC versus TT, adjusted OR (95%CI) = 1.56 (1.24–1.91). In addition, we also found that EH risk was also significantly higher in carriers of G allele of the rs3890011polymorphism than those with CC genotype (CG+ GG versus CC, adjusted OR (95%CI) = 1.31 (1.15–2.03). GMDR analysis indicated a potential gene–gene interaction between rs1126742 and rs3890011 and a gene–environment interaction between rs1126742 and smoking. We found that subjects with TC or CC of rs1126742 and CG or GG of rs3890011genotype have the highest EH risk, OR (95%CI) was 2.52 (1.28–3.57). Smokers with TC or CC of rs1126742 genotype have the highest EH risk, OR (95%CI) was 2.20 (1.28–3.40). Conclusions: Gene–gene interaction between rs1126742 and rs3890011 and gene–environment interaction between rs1126742 and smoking were associated with increased EH risk.     

Association of peroxisome proliferator-activated receptor delta and additional gene–smoking interaction on cardiovascular disease

Aims: To investigate the impact of peroxisome proliferator–activator receptor delta (PPARD) gene polymorphism and additional gene–smoking interaction on cardiovascular disease (CVD) risk based on this Chinese population. Methods: A total of 1048 subjects (617 males, 431 females) with a mean age of 52.9 ± 14.1 years old were selected, including 520 CVD patients and 528 normal control subjects. The logistic regression model was used to examine the association between three SNPs and CVD risk, odds ratio (OR), and 95% confident interval (95%CI) were calculated. Generalized multifactor dimensionality reduction (GMDR) was employed to investigate the gene–smoking interaction. Results: Genotypes of variants in rs2016520 and rs9794 were associated with decreased CVD risk, and CVD risk was significantly lower in carriers of C allele of the rs2016520 polymorphism than those with the TT genotype (TC+CC versus TT), adjusted OR (95%CI) = 0.71 (0.56–0.86). In addition, we also found that CVD risk was also significantly lower in carriers of the G allele of the rs9794 polymorphism than those with the CC genotype (CG+ GG versus CC), adjusted OR (95%CI) = 0.69 (0.53–0.86). GMDR analysis suggested a potential gene–environment interaction between rs2016520 and smoking. Overall, the two-locus models had a cross-validation consistency of 10 of 10, and had the testing accuracy of 62.17%, and never smokers with TC or CC of the rs2016520 genotype have the lowest CVD risk, compared to smokers with TT of rs2016520, OR (95%CI) was 0.42 (0.23–0.66). Conclusions: The minor allele of rs2016520 and rs9794 in PPAR-δ and interaction between rs2016520 and non-smoking were associated with decreased risk of CVD.     

Association of genetic polymorphisms in PTEN and additional gene–gene interaction with risk of esophageal squamous cell carcinoma in Chinese Han population

This study aims to investigate the association of five single nucleotide polymorphisms (SNPs) in the phosphatase and tensin homologue (PTEN) gene and additional role of gene–gene interaction with esophageal squamous cell carcinoma (ESCC), based on a Chinese case–control study. A total of 871 subjects (420 males and 451 females) were selected, including 425 ESCC cases and 446 controls. Five SNPs were selected for genotyping in the case–control study: rs2735343, rs555895, rs2299939, rs17431184 and rs701848. Logistic regression model was used to examine the association between five SNP and ESCC, and additional interaction among five SNP, odds ratio (OR) and 95% confident interval (95%CI) were calculated. All genotypes were distributed according to Hardy–Weinberg equilibrium in controls. The carriers of homozygous mutant of rs2735343 and rs701848 polymorphism revealed increased ESCC risk than those with wild‐type homozygotes, and OR (95%CI) were 1.27 (1.09–2.08) and 1.45 (1.17–1.98), respectively. We also found a potential gene–gene interaction between rs2735343 and rs701848 (P = 0.0010), and a potential gene–gene interaction among all five SNP (P = 0.0107) after covariates adjustment. Subjects with TC or CC of rs2735343 and TC or CC of rs701848 genotype have highest ESCC risk, compared to subjects with TT of rs2735343 and TT of rs701848 genotype, OR (95% CI) was 2.76 (1.37–3.45) after covariates adjustment. The carriers of homozygous mutant of rs2735343 and rs701848 polymorphism revealed increased ESCC risk. We also found a potential gene–gene interaction between rs2735343 and rs701848 and a potential gene–gene interaction among all five SNPs.     

Gene–gene interaction between CD40 and CD226 gene on systemic lupus erythematosus in the Chinese Han population

The aim of the study is to investigate the impact of CD40 and CD226 gene single-nucleotide polymorphism (SNP) and additional gene–gene interaction on systemic lupus erythematosus (SLE) risk in Chinese Han populations. Three SNPs were selected for genotyping in the case–control study: rs4810485, rs763361, and rs3765456. Logistic regression was performed to investigate association between SNP within CD40 and CD226 and SLE. Generalized multifactor dimensionality reduction (GMDR) was used to analyze the interaction among three SNPs. Logistic regression analysis showed that SLE risk was significantly higher in carriers of T allele of rs4810485 in CD40 gene than those with GG genotype (GT+ TT vs GG), adjusted OR (95 % CI) 1.84 (1.40–2.29). In addition, we also found SLE risk was also significantly higher in carriers of rs763361 T allele within CD226 gene than those with CC genotype (CT+ TT vs CC), adjusted OR (95 % CI) 1.89 (1.38–2.13). GMDR analysis suggested a potential gene–gene interaction between rs4810485 and rs763361. Overall, cross-validation consistency of the two-locus model was 10/10, and the testing accuracy was 62.17 %. We also found that subjects with GT or TT of rs4810485 and CT or TT of rs763361 genotype have the highest SLE risk, compared with subjects with GG of rs4810485 and CC of rs763361 genotype, and OR (95 % CI) was 2.14 (1.67–3.08), after covariates adjustment. Our results support an important association of rs4810485 in CD40 gene and rs763361 in CD226 gene polymorphism, combined effect of rs4810485 and rs763361 with increased risk of SLE.     

TCF7L2 rs7903146 polymorphism is associated with gastric cancer: a case-control study in the Venezuelan population

AIM: To explore the association between TCF7L2 rs12255372 and rs7903146 single nucleotide polymorphisms(SNPs) and gastric cancer risk in Venezuelan patients.METHODS: We performed a case-control study including 122 paraffin-embedded archived intestinaltype gastric cancer samples and 129 biopsies obtained by superior endoscopy from chronic gastritis patients. Gastric cancer samples were classified according the degree of carcinoma differentiation. Genomic DNA was extracted from tissues, and the two SNPs of TCF7L2 gene(rs12255372 and rs7903146) were genotyped by polymerase chain reaction-restriction fragment length polymorphism reactions. Multiple regression analysis with adjustments for age and gender were performed and best-fitting models of inheritance were determined.RESULTS: After adjusting for age and sex the TCF7L2 rs7903146 TT genotype was associated with gastric cancer risk under the recessive genetic model(OR = 3.11, 95%CI: 1.22-7.92, P = 0.017). We further investigated the distribution of rs12255372 and rs7903146 genotypes according gastric cancer stratified by degree of differentiation, and we observed that carriers of rs7903146 T allele(CT + TT vs CC) had a significantly increased risk of moderate/well differentiated gastric cancer(dominant model, OR = 2.55, 95%CI: 1.35-4.80, P = 0.004), whereas the rs7903146 TT genotype was associated with poorly differentiated gastric cancer in the recessive model(OR = 3.65, 95%CI: 1.25-10.62, P = 0.018). We did not find association between rs12255372 SNP and the susceptibility of developing gastric cancer. CONCLUSION: TCF7L2 rs7903146 polymorphism is associated with gastric cancer risk in the Venezuelan population, and could be related to determine the degree of differentiation of tumor cells.     

Impact of interaction between CYP1A1 genetic polymorphisms and smoking on coronary artery disease in the Han of China

Aims: To investigate the association of CYP1A1 genotype and additional gene–smoking interaction with coronary artery disease (CAD) risk based on a Chinese case-control study. Methods: A total of 1862 participants (1134 men, 728 women) were selected, including 620 CAD patients and 1242 normal controls. Logistic regression was performed to investigate association of CYP1A1 genotype, gene–gene, and gene–smoking interaction with CAD. Generalized multifactor dimensionality reduction (GMDR) was used to screen the best gene–gene and gene–smoking interaction combination, cross-validation consistency, the testing balanced accuracy, and the sign test, to assess if each selected interaction was calculated. Results: The carriers of homozygous mutant of rs4886605 polymorphism and heterozygous of rs4646903 are associated with increased CAD risk than those with wild-type homozygotes; OR (95% CI) was 1.98 (1.53–2.61) and 1.58 (1.24–1.96), respectively. The carriers of homozygous mutant of rs1048943 polymorphism is associated with decreased CAD risk than those with wild-type homozygotes, OR (95% CI) = 0.75 (0.60–0.93). GMDR model indicated a potential gene–gene interaction between rs4886605 and rs4646903 and a potential gene–smoking interaction between rs4886605 and smoking. Participants with rs4886605-CT or TT and rs4646903-TC or CC genotype have the highest CAD risk, compared to participants with rs4886605-CC and rs4646903-TT genotype; OR (95% CI) was 2.72 (2.03–3.61). In addition, we also found that smokers with rs4886605-CT or TT genotype have the highest CAD risk, compared to nonsmokers with rs4886605-CC genotype; OR (95% CI) was 3.07 (2.23–3.96). Conclusions: rs4886605 and rs4646903 are associated with increased CAD risk, but rs1048943 is associated with decreased CAD risk; we also found gene–gene interaction between rs4886605 and rs4646903 and gene–environment interaction between rs4886605 and smoking.     

中国藏族PSCA基因rs2294008多态性与胃癌遗传易感性的关系

目的:研究前列腺干细胞抗原基因(prostatestem cell antigen gene,PSCA)rs2294008位点多态性与中国藏族胃癌患者遗传易感性的关系.方法:收集185例藏族胃癌患者与200例健康人群的外周血样本,提取基因组DNA,采用dHPLC方法进行PSCA基因rs2294008位点分型.结果:PSCA基因rs2294008位点3种基因型C C、C T、T T在胃癌病例组中频率分别为:40.00%、48.65%和11.35%,而在对照组中分别为54.00%、39.50%和6.50%.与CC型比较,携带CT,TT型基因型者胃癌发生的危险性增加,OR值分别为1.66(95%CI 1.09-2.54)和2.36(95%CI 1.11-5.00).结论:PSCA基因rs2294008位点CT,TT基因型增加中国藏族人群的胃癌易感性.     

细胞色素氧化酶基因CYP1A2多态性与新疆汉族和维吾尔族人群冠心病的相关性

目的 探讨新疆地区维吾尔（维）族人群、汉族人群细胞色素氧化酶基因CYP1A2（cytochrome c oxidase P1A2）多态性与冠心病的关联性。 方法 我们采用两项独立的病例对照研究∶汉族人群389例冠心病患者(病例组）和411名健康体检者（对照组）;维族人群293冠心病患者（病例组）和408名健康体检者（对照组）。通过实时PCR对CYP1A2基因单核苷酸多态性（SNPs）rs2069522和rs2472304进行基因分型。 结果 仅在汉族人群中,SNP1 (rs2069522)基因型的分布在冠心病组和对照组之间差异均有统计学意义(P < 0.05)。而维族人群中未见显著差异。新疆汉族病例组SNP1 (rs2069522)显性模型(CC vs CT + TT)基因型频率显著高于对照组。调整混杂因素后logistic回归分析表明,新疆汉族人群CC基因型患冠心病的风险显著高于CT + TT基因型者(总体:OR = 1.982,95%CI: 1.174～3.236, P < 0.01;男性: OR = 2.671,95%CI: 1.548～4.314, P < 0.01)。 结论 新疆汉族人群CYP1A2基因中rs2069522的位点与冠心病相关。CC基因型可能是新疆汉族人群而非维吾尔族人群发生冠心病的独立危险因素。     

TIRAP rs8177374 gene polymorphism increased the risk of pulmonary tuberculosis in Zahedan,southeast Iran

Objective:To evaluate the possible association between Toll-interleukin 1 receptor(TIR) domain containing adaptor protein(TIRAP;also known as MAI.) rsl893352 and rs8l77374(S180L) gene polymorphisms and pulmonary tuberculosis(PTB) in a sample of Iranian population.Methods:This case-control study was performed on 174 PTB and 177 healthy subjects.Tetra amplification refractory mutation systetn-polymerase chain reaction(T-AKMS-PCR) was used to detect the polymorphisms.Results:Our finding showed that neither the overall Ckisqaare comparison of PTB and control subjects nor the logistic regression analysis indicated any association between rsl893352 polymorphism and PTB.Regarding rs8l77374 polymorphism,the CT genotype as well as CT+TT increased the risk of PTB in comparison with CC genotype(OR=4.73,95%CI=2.65-8.45,P0.0001 and OR=6.47,95%C1=3.68-11.38,P0.0001.respectively).The rs8177374 T allele increased the risk of PTB in comparison with C allele(OR=4.21.95%CI=2.43-7.26,P0.0001).Conclusions:Our finding indicates that TIRAP rs8177374 polymorphism is associated with PTB in a sample of Iranian population.     

ZFHX3基因rs7193343多态性与心房颤动的相关性

目的:研究ZFHX3基因rs7193343多态性与心房颤动(房颤)的相关性。方法:采用前瞻式病例对照研究,按照相关标准入选202例汉族人群,其中房颤患者102例,无房颤患者100例,收集其临床资料和静脉血标本,分别提取基因组DNA,通过聚合酶链反应-限制性片段长度多态性方法和基因测序法检测所有患者的ZFHX3基因rs7193343多态性的基因型。结果:①2组患者ZFHX3基因rs7193343的CC基因型(P=0.023,OR=0.422,95%CI0.198～0.900)、TT基因型(P=0.024,OR=2.475,95%CI1.106～5.541)及等位基因(P=0.017,OR=1.614,95%CI1.089～2.391)的分布均差异有统计学意义。②房颤患者中,TT基因型患者的超敏C反应蛋白水平较CC基因型患者明显高[1.62(0.90～2.90)mg/L∶0.71(0.34～1.09)mg/L,P=0.014],且TT基因型患者的左房前后径和右房横径大小均较CC基因型患者明显增大[(38.2±4.9)mm∶(33.5±4.1)mm,P=0.026;(38.9±6.0)mm∶(33.1±2.6)mm,P=0.003]。结论:在大陆汉族人群中,ZFHX3基因rs7193343多态性与房颤具有显著的相关性,T等位基因和TT基因型是房颤发生发展的危险因子,可通过影响心房肌的结构重构和炎症性改变为房颤的发生、发展提供基质。