新疆哈萨克族慢性阻塞性肺疾病患者发病与肺表面活性物质相关蛋白aa62、aa219基因多态性的关系

目的:探讨新疆哈萨克族慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)患者发病与肺泡表面活性物质相关蛋白A(surfactant protein A,SP-A)基因位点aa62、aa219多态性的关系.方法:采用病例对照研究设计,纳入新疆哈萨克族吸烟COPD患者103例作为实验组,吸烟健康人103例作为对照组.提取206例样本外周血基因组DNA.采用Taqman探针标记荧光定量聚合酶链式反应(polymerase chain reaction,PCR)法检测SP-A的aa62(CCA/CCG,rs1136451)和aa219(CGG/TGG,rs4253527)两个位点的单核苷酸多态性,获得各基因型和等位基因的分布频率.结果:在aa62位点,两组AA,AG、GG基因型比较无统计学意义(x2=2.958,P=0.250),A、G等位基因频率比较也无统计学意义(x2=2.536,P=0.111,OR=1.532,95％CI:0.904-2.595).Aa219位点,两组CC,CT,TT基因型比较无统计学意义(x2=2.799,P=0.094),等位基因C、T频率比较也无统计学意义(x2=1.945,P=0.163,OR=1.548,95％CI:0.56-1.22).结论:新疆哈萨克族人吸烟COPD患者发病与SP-A的aa62(CCA/CCG,rs1136451)位点与aa219(CGG/TGG,rs4253527)位点基因多态性可能无相关性.     

Surfactant protein B 1580 polymorphism is associated with susceptibility to chronic obstructive pulmonary disease in chinese han population

Whether surfactant protein B (SP-B)-18A/C and 1580C/T polymorphism were associated with susceptibility to chronic obstructive pulmonary disease (COPD) in Chinese Han population和was investigated. After genomic DNA was isolated from blood of COPD smokers and control smokers, the genotypes of SP-B-18A/C and SP-B1580C/T polymorphism loci were determined by polymerase chain reaction-restriction fragment length polymorphism analysis (PCR-RFLP) respectively.The results showed that there was significant difference in genotypes distribution frequency of SPB1580C/T polymorphism locus between COPD smokers and control smokers. C→T mutation rate (including TT homozygote and CT heterozygote) in COPD smokers was higher than in control smokers (57.9 % vs 41.7 %, X^2 =4.93, P＜0.05), whereas there was no significant difference in genotypes distribution frequency of SP-B1580-18A/C locus between COPD smokers and control smokers. The allele frequency (29.1 ％) of SP-B1580-18A/C locus is lower than T allele (70.9 ％) in Chinese Han Population, and the distribution was different from that in Mexican, in which, the A and T allele frequencies were 85 % and 15 % respectively. It was concluded that SP-B1580 T allele was probably associated with increased susceptibility to COPD in Chinese Han population; The polymorphism of SP-B-18A/C locus maybe varied with race.     

<Emphasis Type="Italic">XRCC1</Emphasis> Arg194Trp polymorphism and risk of chronic obstructive pulmonary disease

The DNA damage, caused by cigarette smoking, can cause airway cell apoptosis and death, which may be associated with the development of chronic obstructive pulmonary disease （COPD）. However, just 20%-30% smokers develop COPD, which suggests that different degrees of DNA repair cause different outcomes in smokers. X-ray repair cross-complementing group 1 （XRCC 1）, a base excision repair protein, has multiple roles in repairing ROS-mediated, basal DNA damage and single-strand DNA breaks. The present study investigated the association between polymorphism in XRCC1 （Arg399Gln） and susceptibility of COPD. A total of 201 COPD cases and 309 controls were recruited and frequency-matched on age and sex. XRCC1 genotype was determined by PCR-restriction fragment length polymorphism analysis. Overall, compared with those with the XRCC1 Arg/Arg genotype, the risk for COPD had no significant difference among individuals with Trp/Trp genotype. However, after stratifying by smoking status, in former smokers, compared with those with the XRCC1 Arg/Arg genotype, the risk for COPD was significantly reduced among individuals with Trp/Trp genotype （adjusted OR=0.22, 95% CI 0.06-0.85, P=0.028）; after stratifying by smoking exposure, in light smokers, compared with those with the XRCC1 Arg/Arg genotype, the risk for COPD was significantly reduced among individuals with Arg/Trp genotype and Trp/Trp genotype （adjusted OR=0.39, 95% CI 0.16=0.94, P=0.036; 0.24, 95% CI 0.07-0.79, P=0.019, respectively）. In conclusion, XRCC1 Arg194Trp genotype is associated with a reduced risk of developing COPD among former and light smokers.     

新疆维吾尔族ACE基因I/D多态性分析及其血清ACE水平的相关性

目的　调查新疆维吾尔族血管紧张素转换酶 (ACE)基因I/D多态性分布及其血清ACE水平的相关性。方法　通过两次聚合酶链反应测定 81例健康维吾尔族ACE基因。结果　所有被调查的 81例健康维吾尔族人ACE基因中 ,DD型占2 5 9%,DI型占 48 1%,II型占 2 5 9%,D与I等位基因出现频率均为 0 5 0。 3种基因型中 ,DD型个体ACE水平最高 ,DI型者次之 ,II型者最低 ,有统计学意义。结论　维吾尔族ACE基因DD型为 2 5 9%。ACE基因DD型与血清ACE水平显著相关 (P <0 0 5 ) ,维吾尔族ACE基因的DD型同其他民族一样可能通过影响ACE水平而导致心血管疾病发病。     

PLA2R基因多态性与成人特发性膜性肾病治疗效果及预后的关系

目的 探讨磷脂酶A2受体(PLA2R)SNP rs35771982位点基因多态性与成人特发性膜性肾病(IMN)治疗效果及预后的关系。方法 选取2017年1月至2018年12月新疆维吾尔自治区人民医院肾内科确诊的60例IMN患者为IMN组,选取同期60例健康体检者作为对照组,比较两组研究对象PLA2R基因单核苷酸多态性(SNP)rs35771982位点的基因型,比较不同基因型IMN患者完全/部分缓解率、复发率、不良反应发生情况,采用二元logistic回归分析PLA2R基因不同基因型与成人IMN患者预后的关系。结果 IMN组患者PLA2R基因SNP rs35771982位点存在GG、GC、CC 3个基因型,GG基因型、G等位基因比例显著低于对照组,CC基因型、C等位基因比例显著高于对照组(P<0.05);CC基因型患者的完全/部分缓解率显著低于GC、GG基因型患者(P<0.05);CC基因型患者的复发率显著高于GC、GG基因型患者(P<0.05);CC基因型患者的血糖异常率显著高于GG基因型患者(P<0.05);CC基因型患者的尿酸异常率显著高于GG、GC基因型患者(P<0.05);logistic回归分析显示,CC基因型是影响IMN患者不良预后的危险因素(OR=6.634, P<0.05)。结论 新疆维吾尔族自治区人群PLA2R基因SNP rs35771982位点的基因多态性可能与成人IMN患者治疗效果、预后相关,且rs35771982位点CC基因型可能是影响IMN患者不良预后的危险因素。     

HHIP基因多态性与新疆蒙古族慢性阻塞性肺疾病易感性的关系研究

目的　探讨HHIP基因多态性与新疆蒙古族慢性阻塞性肺疾病（COPD）易感性之间的关系。方法　选取2016年1月—2017年6月新疆巴音郭楞蒙古自治州医院和新疆博尔塔拉蒙古自治州医院诊断为COPD的蒙古族患者259例（病例组）,选取同期体检中心的体检健康的蒙古族志愿者245例（对照组）。测定研究对象的第1 秒用力呼气末容积占预计值百分比（FEV1%）、用力肺活量（FVC）及FEV1/FVC。提取患者外周血DNA,运用SNaPshot分型技术检测HHIP基因rs1489758、rs1492820位点多态性。结果　病例组与对照组HHIP基因rs1489758、rs1492820位点基因型、等位基因分布比较,差异有统计学意义（P<0.05）。病例组HHIP基因rs1489758、rs1492820位点不同基因型患者的FEV1%比较,差异有统计学意义（P<0.05）。HHIP基因rs1489758位点基因型GT〔OR=0.582,95%CI（0.396,0.854）〕、等位基因T〔OR=0.639,95%CI（0.463,0.884）〕和rs1492820位点基因型GG〔OR=1.975,95%CI（1.153,3.384）〕、等位基因G〔OR=1.388,95%CI（1.076,1.790）〕是发生COPD的影响因素（P<0.05）。结论　HHIP基因rs1489758、rs1492820位点多态性可能与新疆蒙古族人群COPD的发生有关。     

ESR1基因多态性与新疆胆石症相关性研究

目的 探讨雌激素受体1（estrogen receptor 1, ESR1）基因rs35396879多态性位点基因型与新疆维吾尔族、汉族胆石症之间的关系。方法 采用病例-对照研究方法,收集胆石症患者维吾尔族 87 例、汉族54例; 正常对照组维吾尔族56例,汉族45例,检测及比较其一般临床特征指标。同时采集外周静脉血,提取基因组DNA,运用Sequenom MassARRAY 单核苷酸多态性（SNP）基因型分析技术定量检测ESR1基因rs35396879 位点基因分型,分析基因型分布在维吾尔族、汉族胆石症组和健康对照组间的差异。结果 维吾尔族胆石症组低密度脂蛋白LDL显著高于对照组（P < 0.05）, 性别分布在汉族胆石症组和对照组之间差异有统计学意义（P < 0.05）,汉族人群胆石症组总胆固醇TC显著高于对照组（P < 0.05）;ESR1基因rs35396879 位点在维吾尔族胆石症患者中的基因型和等位基因分布频率与维吾尔族对照组和汉族胆石症组差异均有统计学意义（P < 0.05）。而汉族胆石症患者与汉族对照组、维吾尔族对照组和汉族对照组之间差异无统计学意义。结论 维吾尔族和汉族胆石症患者之间ESR1的rs35396879 位点基因型和等位基因频率分布有差异,这可能是两个民族具有不同胆结石临床表型的潜在分子机制。     

Lack of association of common polymorphism of <Emphasis Type="Italic">LRP1</Emphasis> gene with myocardial infarction in a Chinese Han population

This study examined the association of a common polymorphic allele(25G) of the low-density lipoprotein receptor-related protein1(LRP1) gene with myocardial infarction(MI).The genotypes of LRP1 25CG(rs35282763) were determined in 347 MI patients and 347 age-and sex-frequency-matched controls from an unrelated Chinese Han population.Factor Ⅷ(FⅧ) levels were measured in the MI patients and controls by chromogenic assay and enzyme-linked immunosor-bent assay(ELISA).The results showed that LRP1 25CG(rs35282763) genotype distribution did not differ significantly between patients(n=206 for 25CC,n=122 for 25CG) and controls(n=191 for 25CC,n=126 for 25CG;P>0.05).The 25G allele was not associated with a reduced risk of MI(P>0.05).Further stratifications for age,sex,and other cardiovascular risk factors did not affect the negative findings.It was concluded that the presence of the G allele at the 25CG(rs35282763) polymorphism of the LRP1 is not associated with a reduced risk of MI,and genotyping for LRP1 25CG(rs35282763) polymor-phism is not useful in assessing the individual risk of MI.     

新疆维吾尔族与汉族载脂蛋白A5c.553G＞T基因多态性分布特征及与血脂的关系

目的 研究载脂蛋白A5(apolipoproteinA5,ApoA5)c.553G ＞T多态性在新疆维吾尔族(维族)及汉族人群的分布特征及与血脂的关系.方法 采用聚合酶链反应-限制性片段多态性(PCR-RFLP)方法,对406例维族和527例汉族健康体检者ApoA5基因c.553G＞T多态性进行检测.结果 ApoA5基因c.553G＞T的3种基因型在维族组的分布频率分别为:GG型378例(93.1％),GT型27例(6.7％),TT型1例(0.25％);在汉族组的分布频率分别为:GG型478例(90.7％),GT型49例(9.3％),TT型无,两组基因型分布差异无统计学意义(P＞0.05).维族组及汉族组中,T等位基因携带者(TT +GT基因型)较GG型的甘油三酯(TG)水平高[维族:(2.24±1.13)mmol/L比(1.69±1.12)mmol/L;汉族:(2.41±1.38)mmol/L比(1.69±1.40)mmol/L,P＜0.01].Logistics回归分析校正了性别、年龄、吸烟饮酒史、BMI、血压、血脂等影响因素后,在维、汉两组T等位基因携带者较GG型患高甘油三酯血症的风险仍有明显增高(维族组:OR 3.31,95％ CI 1.31～8.36;汉族组:OR 3.98,95％ CI 1.81～8.74).结论 ApoA5基因c.553G＞T多态性分布频率在新疆维、汉民族之间没有差异,该多态性与血清TG水平有关,T等位基因是高甘油三酯血症的一个危险因素.     

Association of polymorphisms in angiotensin II receptor genes with aldosterone-producing adenoma

This study examined the association of polymorphisms in angiotensinⅡreceptor genes(AT1R and AT2R) with the risk for aldosterone-producing adenoma(APA) in a Chinese Han population.Four polymorphisms including rs5182(573T/C) in exon 4,rs5186(1166A/C) in 3’-untranslated region(3’-UTR) in AT1R gene and rs5194(2274G/A) in 3’-UTR,rs1403543(1675G/A) in intron 1 in AT2R gene were detected in 148 APA patients and 192 normal subjects(serving as control) by using a MGB-Taqman probe.The distribution of genotypes of each locus was in accordance with Hardy-Weinberg Equilibrium(HWE) in the APA and control groups(P>0.05).The allele A frequency at rs5194 was significantly higher in the APA group(0.49) than in the control group(0.35)(χ2=12.08,P=0.001).Subjects with homozygotic genotype AA and heterozygotic genotype GA were at an increased risk for APA as compared to those with GG genotype(OR=2.66,95% CI=1.45-4.87;OR=1.67,95% CI=1.02-2.74).Furthermore,rs5194 single-nucleotide polymorphism(SNP) at AT2R gene was significantly associated with APA in additive(OR=1.64,95% CI=1.21-2.20,P=0.001),dominant(OR=1.94,95% CI=1.23-3.06,P=0.003),and recessive model(OR=2.01,95% CI=1.17-3.45,P=0.01).It was concluded that rs5194 polymorphism at AT2R gene was associated with the risk for APA,which may constitute a genetic marker of APA.     

Association of polymorphisms in iNOS and NQO1 with bladder cancer risk in cigarette smokers

BackgroundNAD(P)H:quinine oxidoreductase (NQO1) plays an important role in the metabolism of several carcinogens contained in cigarettes. Inducible nitric oxide synthase (iNOS) expression had been detected in urinary bladder tumors. The aim of this study was to investigate the interaction of iNOS and NQO1 on bladder cancer (BC) risk stratified by cigarette smoking status.MethodsA total of 159 BC patients and 150 cancer-free controls were recruited from December 2003 to November 2004. Genotyping of NQO1 rs1800566 polymorphism and iNOS (CCTTT)n pentanucleotide repeat polymorphism was determined using the polymerase chain reaction-restricted fragment length polymorphism and sequencing method. The odds ratio and 95% confidence interval (CI) were calculated as a measure of the joint effect of NQO1 rs1800566 and iNOS (CCTTT)n polymorphisms on BC risk among cigarette smokers.ResultsCompared with study participants carrying the C/C genotype of NQO1 gene, those with C/T and T/T genotypes had a significantly increased BC risk of 1.8 (95% CI = 1.1–2.9). Among cigarette smokers, those who carried the 12-repeat allele of iNOS (CCTTT)n polymorphism had a significantly increased BC risk of 2.7 (95% CI = 1.0–6.7). Furthermore, a significant combined effect of the C/T and T/T genotypes of NQO1gene and the 12-repeat allele of iNOS (CCTTT)n repeat polymorphism on BC was found among cigarette smokers (odds ratio = 4.4, 95% CI = 1.3–14.9).ConclusionOur findings suggest that a significant combined effect of NQO1 C/T and T/T genotypes and the 12-repeat allele of iNOS (CCTTT)n polymorphism on BC exists, especially in those with the habit of cigarette smoking.     

ORMDL3基因多态性与内蒙古地区蒙古族支气管哮喘的相关性研究

目的 探讨ORMDL3基因多态性与内蒙古地区蒙古族哮喘的相关性。 方法 选取内蒙古地区蒙古族成人哮喘患者100例与蒙古族健康成人100例,提取外周静脉血基因组DNA,利用聚合酶链式反应(PCR)对SNPs7216389进行基因扩增,应用基因测序技术检测其3种基因型(TT/TC/CC)及等位基因(T/C)的频率分布情况。 结果 哮喘组的ORMDL3基因rs7216389位点的基因型分布频率与其对照组相比,差异有统计学意义(χ²=7.581,P=0.023)。比较两组等位基因分布频率提示 差异有统计学意义(χ²=9.091,P=0.003);比较包括本研究对象在内的不同种族人群间的rs7216389-T 等位基因频率分布的差异性,差异有统计学意义(P<0.05)。 结论 ORMDL3基因多态性与内蒙古地区蒙古族支气管哮喘的发生有一定相关性,SNPrs7216389在不同种族的患病人群中的分布有差异有统计学意义。     

对氧磷酶1基因位点多态性与川崎病的关系研究

目的 探讨对氧磷酶1(PON1)基因rs662、rs3917541、rs3917539位点多态性与儿童川崎病(KD)的发病风险及其并发冠状动脉损害之间的相关性.方法 利用聚合酶链反应-直接测序法(PCR-SBT)分析93例KD患儿(KD组)和94例健康儿童(对照组)PON1基因的rs662、rs3917541、rs39...     

ABCA1基因rs363717与冠心病易感性的关联研究

[目的]探讨中国男性汉族人群冠心病易感性与三磷酸腺苷结合盒转运体A1(ABCA1)基因rs363717多态性位点基因型间的关联性。[方法]本文研究对象包括165例符合世界卫生组织制定的冠心病的定义以及诊断标准的冠心病患者(冠心病组)以及165例健康人(对照组),采用调查问卷等方式搜集两组受试者年龄、收缩压、舒张压、血总胆固醇水平、甘油三酯水平、高密度脂蛋白水平、低密度脂蛋白水平、空腹血糖以及是否合并高血压、糖尿病、吸烟及饮酒方面的基本信息;测定两组受试者ABCA1基因rs363717多态性位点的基因型并计算相应的等位基因型频率;测定冠心病组受试者ABCA1基因rs363717多态性位点的血脂水平;此外,分析ABCA1基因rs363717多态性基因型频率与冠心病患者冠状动脉病变程度的关联;两组受试者中等位基因频率是否满足群体代表性通过Hardy-Weinberg平衡来检验。[结果]冠心病组受试者ABCA1基因rs363717多态性位点的A等位基因频率(76.06%)高于正常对照组(66.67%),且差异存在统计学意义(P0.05);AA基因型与(AG+GG)基因型在血总胆固醇、甘油三酯、高密度脂蛋白以及低密度脂蛋白水平上均不存在显著差异(P0.05)。此外未发现血管病变支数与ABCA1基因rs363717多态性位点等位基因之间的关联性。[结论] ABCA1基因的rs363717位点多态性可能与冠心病易感性相关,G等位基因可能是冠心病的保护位点。     

TRAIL受体家族基因多态性及sTRAIL水平与溃疡性结肠炎的关系

目的 肿瘤坏死因子相关凋亡诱导配体（TRAIL）的受体家族包括死亡受体（DR4、DR5）,诱骗受体（DcR1、DcR2）及护骨素（OPG）。研究显示TRAIL 3''非翻译区基因多态性与溃疡性结肠炎（UC）的易感性相关,由于TRAIL各受体间的平衡及相互作用是调节靶细胞对TRAIL诱导凋亡敏感度的关键因素,因此本研究将进一步探讨TRAIL受体家族基因多态性与UC的关系。方法 收集146例UC患者和247例正常对照者,采用微测序技术检测DR4（rs20575、rs13278062）、DR5（rs1047266）、DcR1（rs12549481）、DcR2（rs1133782）及OPG（rs3102735）6种单核苷酸多态性。结果 在显性模型中,与对照组相比,UC组中DR4（rs20575）的突变等位基因（G）和基因型（CG+GG）频率均增高（4.79% vs 1.62%,P=0.009;8.22% vs 3.24%,P=0.030）,而DcR2（rs1133782）的突变基因型（GA+AA）频率降低（10.27% vs 18.22%,P=0.034）。采用隐性模型分析,UC组中OPG（rs3102735）的突变等位基因（T）和基因型（TT）频率均显著高于对照组（86.99% vs 80.9%,P=0.029;76.03% vs 66.40%,P=0.044）。经非条件Logistic回归分析,与轻中度患者相比,重度UC患者中DR4（rs20575）的突变等位基因（G）和基因型（CG+GG）频率均显著增高（15.00% vs 3.17%,P=0.001;25.00% vs 5.56%,P=0.003）,而DR4（rs13278062）的突变基因型（T）和基因型（GT+TT）及OPG（rs3102735）突变等位基因（T）频率均显著降低（17.50% vs 33.73%,P=0.040;30.00% vs 59.22%,P=0.014;75.00% vs 88.89%,P=0.015）。此外,本研究还发现,UC组中sTRAIL水平显著高于对照组。结论 DR4（rs20575）、DcR2（rs1133782）及OPG（rs3102735）基因多态性与UC相关,DR4（rs20575、rs13278062）及OPG（rs3102735）基因突变可能影响UC疾病严重程度。此外,本研究还发现血浆sTRAIL水平与UC相关,提示TRAIL及其受体所构成的凋亡途径可能与UC相关。     

D2S388、D2S2232微卫星长度多态性与汉族人慢性阻塞性肺疾病易感性关联研究

目的研究D2S388和D2S2232微卫星长度多态性及其与汉族人慢性阻塞性肺疾病（COPD）易感性的关系。方法提取80例吸烟COPD患者和81名健康吸烟者（全部为汉族人,来源于全国各地）外周血基因组DNA,用多聚酶链式反应-变性聚丙烯酰胺电泳-测序方法检测D2S388、D2S2232微卫星长度多态性。分析吸烟健康人群的基因型分布是否符合Hardy-Weinberg平衡,计算微卫星位点的多态信息含量,并对两组人群D2S388和D2S2232长度多态性进行比较。结果D2S388和D2S2232位点均分别检测出6种等位基因和12种不同基因型,等位基因分布比墨西哥人相对集中;吸烟健康人群D2S388和D2S2232位点基因型分布均符合Hardy-Weinberg平衡,D2S388位点杂合率为0．47,多态信息含量为0．54,D2S2232位点杂合率为0．45,多态信息含量为0．53。D2S388（AC）15等位基因在COPD患者中的分布频率高于健康吸烟组,其患COPD的机会比为3．0;两组人员D2S2232位点的等位基因频率差异无显著性意义。结论汉族人D2S388和D2S2232位点长度多态性与墨西哥人比较具有种族差异;D2S388长度多态性与中国汉族人COPD易感性有关,D2S2232长度多态性与中国汉族人COPD易感性无相关关系。     

TLR4、TLR9基因多态性与浅表性膀胱癌复发的关系

目的 探讨Toll样受体4（Toll-like receptor 4,TLR4）、Toll样受体9（Toll-like receptor 9,TLR9）基因多态性与浅表性膀胱癌肿瘤复发之间的关系。方法 选取2013年3月~2017年3月笔者医院收治的300例膀胱癌患者为研究对象,其中初发膀胱癌150例、复发膀胱癌150例,同期选取100例体检健康者作为对照组,利用限制性内切酶片段长度多态性PCR （polymerase chain reaction-restriction fragment length polymorphism,PCR-RFLP）技术检测TLR4、TLR9基因多态性,分析TLR4 rs10759932、TLR9 1486T/C、C2848T基因多态性与浅表性膀胱癌肿瘤复发之间的关系。结果 3组TLR4 rs10759932、TLR9 1486T/C、C2848T基因多态性分布均符合Hardy-Weinberg平衡。与对照组比较,初发膀胱癌组及复发膀胱癌组TLR4rs10759932基因多态位点T/C、C/C基因型频率及C等位基因频率明显降低,差异有统计学意义（P<0.05）,T/T、T等位基因明显升高（P<0.05）,且复发膀胱癌组TLR4rs10759932基因多态位点T/C、C/C基因型频率及C等位基因频率明显低于初发膀胱癌组（P<0.05）,T/T、T等位基因明显高于初发膀胱癌组（P<0.05）。3组TLR9 1486T/C、C2848T基因多态性比较,差异无统计学意义（P>0.05）。结论 TLR4基因rs10759932多态性与浅表性膀胱癌肿瘤复发密切相关,该基因位点T/C、C/C基因型及C等位基因可能会降低浅表性膀胱癌复发风险。     

Association of gene polymorphisms of tumour necrosis factor-α and interleukin-13 with chronic obstructive pulmonary disease in Han nationality in Beijing

Background Genetic factors are believed to play a role in the individual susceptibility to chronic obstructive pulmonary disease (COPD). A single nucleotide polymorphism (SNP) of tumour necrosis factor-α (TNF-α)has been reported but inconsistent results may arise from different populations and phenotypes of COPD. There are only a few published studies of interleukin-13 (IL-13) SNPs on COPD. The SNPs of TNF-α and IL-13 have not been studied in the Chinese population. This research was conducted to study the frequencies of IL-13 gene promoter 1055 (IL-13-1055) and TNF-α gene-308 polymorphisms in the patients with COPD and to investigate the effect of those genetic polymorphisms on COPD in the Chinese population.Methods A cohort of COPD patients and age matched controls were recruited from an inpatient hospital service in Beijing. Venous blood was obtained and genomic DNA was extracted from peripheral blood monocytes using standard method. Genomic DNA was used as a template for amplification by polymerase chain reaction(PCR) to determine the polymorphism at -1055 in the length polymorphism (RFLP) was used to determine polymorphisms in the TNF-α gene-308 position. The products were investigated by sequence analysis also.Results One hundred and eleven COPD patients and 97 controls were studied. Seventy-five cases were current smokers in COPD patients and 36 were current smokers in controls. The frequencies of TT genotype in the IL-13 gene promoter region were 11.7% ( 13/111 ) in the COPD group and 13.4% (13/97) in the controls (P =0. 713). However, the OR value of TT genotype was significantly increased to 6.4 (95% CI 1.62 -25.39) in the smokers with COPD. TT genotype was also positively related to family history of COPD, OR =7. 7 (95% CI 1.37 -43.80). The frequencies of A allele in the TNF-α gene were 5.9% in COPD and 3. 1% in controls (P=0. 131 ). The OR value of A allele was 5.0 (95% CI 1.011 to 25. 059) in smokers with COPD.Conclusions There is no significant difference in the frequencies of the TT genotype of IL-13-1055 or the A allele of the TNF-α between Han Chinese patients with COPD versus control. Thus, it does not appear that these SNPs are independent factors in COPD for Han nationality in Beijing. However, these SNPs may increase the risk of COPD among smokers.     

云南彝族Fetuin A基因多态性与2型糖尿病合并下肢动脉硬化的相关性研究

目的 研究云南彝族人群中Fetuin A基因rs4917、rs4918、rs1071592、rs2248690单核苷酸多态性（single nucleotide polymorphisms,SNPs）的基因型、等位基因频率分布特征,及其与2型糖尿病合并下肢动脉硬化的相关性。方法 采用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）和等位基因特异引物-聚合酶链反应（ASP-PCR）技术检测120例健康对照组、61例2型糖尿病组、67例糖尿病合并下肢动脉硬化组Fetuin A基因4个位点的SNP。结果 Fetuin A基因rs1071592（C/A）位点的C/C型基因频率及C等位基因频率在2型糖尿病合并下肢动脉粥样硬化组高于健康对照组（P<0.01）;rs4917（C/T）、rs4918（C/G）、rs2248690（A/T）在3组中其基因型及等位基因频率差异无统计学意义（P>0.05）。Logistic回归分析显示糖尿病下肢动脉粥样硬化的发生与Fetuin A基因rs1071592位点CC基因型相关。结论 在中国楚雄地区彝族中存在Fetuin A基因rs4917（C/T）、rs4918（C/G）、rs1071592（C/A）、rs2248690（A/T）多态性。在云南彝族人群Fetuin A基因rs1071592位点CC基因型可能是糖尿病下肢动脉粥样硬化的危险因素。