汉族人白细胞介素-18基因启动子多态性与慢性乙型肝炎的相关性研究

目的 探讨中国汉族人白细胞介素-18（interleukin-18,IL-18）基因启动子单核苷酸多态性及其与慢性乙型肝炎易感性之间的关系。方法 应用序列特异性引物一聚合酶链反应技术，检测231例慢性乙型肝炎患者和300名正常人儿．馏基因启动子-607C/A、-137G／C单核苷酸多态性位点基因型。结果 正常对照组和慢性乙型肝炎组中，IL-18基因启动子-607C/A位点3种基因型频率分别为CC型：0．22（66／300）和0．27（62／231），CA型：0．53（160／300）和0．50（116／231），AA型：0．25（74／300）和0．23（53／231）；IL-18基因启动子-137G／C位点3种基因型频率分别为GG型：0．67（202／300）和0．79（182／231），GC型：0．30（90／300）和0．19（45／231），CC型：0．03（8／300）和0．02（4／231）。经Y0检验，慢性乙型肝炎组IL-18基因启动子-137GG分布频率显著高于正常对照组（X^2=8．55，P=0．003），而-607C／-137C和-607A／-137C单倍型频率显著低于正常对照组。进一步比较慢性乙型肝炎患者儿．馏基因启动子多态性与乙型肝炎病毒（hepatitis Bvirus，HBV）DNA复制的关系，发现高水平HBV—DNA组-607位点AA基因型分布频率明显低于低水平HBV—DNA组（Y2=6．03，P=0．014）。结论 汉族人慢性乙型肝炎与IL-18基因启动子-607C/A、-137G／C单核苷酸多态性相关，其中IL-18基因启动子-137位点C等位基因可能对机体HBV感染有保护作用，而启动子-607位点AA型对感染后HBV—DNA的复制可能有抑制作用。     

武汉汉族新生儿中肺表面活性物质蛋白D基因多态性及其与支气管肺发育不良相关性分析

目的: 研究武汉汉族新生儿中肺表面活性物质蛋白D(SP-D)基因多态性及其与支气管肺发育不良(BPD)易感性的相关关系。方法: 采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)对218例武汉汉族新生儿SP-D相关位点进行基因型检测,同时进行基因测序验证结果。结果: SP-D Met11Thr三种基因型TT、TC、CC频率分别为10.5%、49.1%、40.4%,等位基因T和C频率分别为35.1%和64.9%。SP-D Ala160Thr三种基因型GG、GA、AA频率分别为54.6%、39.4%、6.0%,等位基因G和A频率分别为74.3%和25.7%。与对照组比,SP-D Met11Thr和SP-D Ala160Thr基因多态性与BPD发生率无明显关联(P>0.05)。结论: SP-D Met11Thr和SP-D Ala160Thr基因型和等位基因频率存在种族差异性;SP-D Met11Thr和SP-D Ala160Thr基因多态性与BPD发生率无明显关联。     

白细胞介素10基因启动子区多态性与乙型肝炎病毒感染预后的关联研究

目的探讨中国汉族人白细胞介素10基因(interleukin10gene,IL10)启动子区单核苷酸多态性与乙型肝炎病毒(hepatitisBvirus,HBV)感染、转归的关联。方法采用聚合酶链反应-限制性片段长度多态性分析方法,检测231例HBV感染者,165例HBV感染康复者和135名正常对照者IL10基因启动子-1082G/A、-819T/C、-592A/C位点基因型。结果IL10基因启动子-1082G/A、-819T/C、-592A/C位点基因型和等位基因在HBV感染组、HBV感染康复组和正常对照组之间的分布频率比较差异无统计学意义(P>0.05),在血清HBV-DNA<1×103拷贝/mL的HBV感染者组和HBV-DNA≥1×103拷贝/mL组之间的分布频率比较差异亦无统计学意义(P>0.05);但IL10基因启动子-819T/C和-592A/C位点基因型和等位基因在HBV无症状携带组和慢性乙型肝炎组之间的分布差异有统计学意义(P<0.05),-819T/C位点TT型和-592A/C位点AA型在慢性乙型肝炎组的频率明显较高。结论汉族人IL10基因启动子多态性可能与人群对HBV易感性及感染后的病毒血症水平无显著相关性;但IL10启动子-819T/C和-592A/C位点基因多态性与HBV感染后的肝脏炎症反应有关。     

汉族人群胆固醇酯转运蛋白基因和C反应蛋白基因多态性与非瓣膜性房颠的关联

目的 研究胆固醇酯转运蛋白(cholesteryl ester transfer protein,CETP)基因TaqIB、C反应蛋白(C reactive protein,CRP)基因1444C/T单核苷酸多态性(single nonucleotide polymorphism,SNP)与汉族非瓣膜性房颤的相关.方法 选取非瓣膜性房颤患者147例、病例对照147例,应用聚合酶链反应-限制性内切酶片段长度多态性鉴定基因型.结果 CETP TaqIB(P=0.005,OR=0.614,B=-0.488)和CRP 1444C/T(P=0.003,OR=2.428,β=0.887)遗传多态性在病例组和对照组间差异有统计学意义.根据性别分组:女性组,吸烟、CETP TaqIB、CRP 1444C/T病例对照间差异有统计学意义;男性组,体重指数和CETP Taq IB病例对照间差异有统计学意义.结论 中国汉族CETP TaqIB (B2等位基因为保护性因子)和CRP1444C/T(T等位基因为危险因子)多态性可能与非瓣膜性房颤相关.吸烟、CRP 1444C/T多态性可能增加女性非瓣膜性房颤遗传易感性;肥胖可能增加男性非瓣膜性房颤遗传易感性.     

Association of hepatocellular carcinoma risk with polymorphisms in tumour necrosis factor alpha gene in a Chinese Han population

Hepatocellular carcinoma (HCC) is the third leading cause of cancer‐related death worldwide. Studies have shown that the tumour necrosis factor alpha (TNF‐α) plays an important role in the development of HCC; however, the association between genetic variations of TNF‐α and HCC is not yet fully understood. To evaluate the correlation of TNF‐α polymorphisms with HCC, we randomly selected 327 HCC patients and 432 healthy controls, all these subjects reported Han nationality. Genotyping of four TNF‐α SNPs (rs1799724, rs1800629, rs1799964 and rs1800610) was performed using the matrix‐assisted laser desorption ionization‐time of flight mass spectrometry (MALDI‐TOF‐MS) method. Distributions of rs1799964 genotypes and rs1800610 alleles were found to be significantly different between cases and controls (p = .011, p = .001). The recessive model of rs1799964 significantly increased HCC risk (p = .0015), while the dominant and over‐dominant models of rs1800610 significantly reduced HCC risk (p = .0096, p = .014). Haplotype analysis of the four TNF‐α SNPs revealed that the TGTA haplotype was associated with a reduced HCC risk (p = .0033, OR = 0.53), while the TGTG haplotype was associated with an increased HCC risk (p = .0032, OR = 9.69). These findings indicated that specific TNF‐α polymorphisms may be associated with the susceptibility to HCC.     

Single nucleotide polymorphisms rs2120131, rs4935047, and rs7095891 in the MBL2 gene show no association with susceptibility to chronic hepatitis B in a Chinese Han population

Thus far, many studies have evaluated the correlation between MBL2 gene polymorphisms and hepatitis B infection. Tag single nucleotide polymorphisms (SNPs) were used to investigate the relationship between MBL2 gene polymorphisms and susceptibility to chronic hepatitis B virus (HBV) infection by comparing 996 chronic HBV infection cases to 301 acute infection controls. There was no significant correlation between rs2120131, rs4935047, and rs7095891 and chronic HBV infection. This suggested that the new SNPs within MBL2 were not associated with susceptibility to chronic hepatitis B in a Chinese Han population. J. Med. Virol. 85:602–607, 2013. © 2013 Wiley Periodicals, Inc.     

我国福建汉族人HSP70基因多态性分析

目的了解福建省汉族人HSP70基因多态性分布，进而为探讨HSP70基因多态性与疾病的相关性提供遗传背景资料。方法应用聚合酶链反应技术、限制性内切酶分析检测了127名福建汉族正常人的HSP70基因3个多态性位点，并比较了部分不同地区和人群之间的基因型与等位基因频率。结果福建汉族人HSP70-1基因型（GG，GC和CC）分布频率分别是55．1％、40．2％和4．7％；HSP70-2基因型（从，AG和GG）分布频率分别是44．1％、铝．8％和6．9％；HSP70-hom基因型（Tr，TC和CC）分布频率分别是59.8％、37．0％和3．2％；HSP70-1等位基因频率G和C分别是75．2％和24．8％；HSP70-2等位基因频率A和G分别是68．5％和31．5％；HSP70-hom等位基因频率T和C分别是78．3％和21．7％。福建汉族人HSP70-1的基因型分布和等位基因频率同日本、墨西哥人群比较差异无统计学意义，与美国和西班牙人比较，差异有统计学意义（P〈0．01）。福建汉族人HSP70-1的GG纯合型（55．1％）显著高于美国（42．6％）和西班牙（33．0％）人群；福建汉族人HSP70-2的基因型分布和等位基因频率与日本人比较差异无统计学意义，与墨西哥、美国和西班牙人群比较，差异有统计学意义（P〈0．05），福建汉族人HSP70-2的AA纯合型（44．1％）高于墨西哥（23．O％）、美国（38．8％）和西班牙（20．O％）人群；福建汉族人群的HSP70-hom基因型和等位基因频率分布同日本、墨西哥、美国和西班牙人群的基本一致，差异无统计学意义，福建汉族人群的HSP70基因型和等位基因频率分布同中国台湾汉族人基本一致，差异无统计学意义，与武汉地区汉族人某些位点存在差异。结论福建汉族人HSP70基因多态性分布不同于某些地区的人群，具有种族和地区差异。     

Interleukin-23 receptor gene polymorphisms is associated with dilated cardiomyopathy in Chinese Han population

Idiopathic dilated cardiomyopathy (DCM) is characterized by ventricular chamber enlargement and systolic dysfunction with normal left ventricular wall thickness. The pathogenesis of DCM has been extensively investigated for many years, but it remains uncertain. Recently, many studies indicated that autoimmune mechanisms are likely to participate in the pathogenesis of DCM. Interleukin-23 receptor ( IL-23R ) gene polymorphisms have been previously found to be associated with autoimmune diseases. To assess the role of IL-23R in DCM, we examined three single nucleotide polymorphisms (SNPs) in IL-23R gene, namely, rs1884444, rs11465817 and rs10889677. A total of 176 DCM patients and 216 controls were included in the study, and all SNPs were genotyped by polymerase chain reaction–restriction fragment length polymorphism. Our results showed that SNP rs10889677, but not rs1884444 and rs11465817, had association with DCM in Chinese Han population. The results suggest that IL-23R polymorphisms appear to play an important role in the susceptibility of DCM in Chinese Han population.     

Association between polymorphisms of the cytokine and cytokine receptor genes and immune response to hepatitis B vaccination in a Chinese Han population

The immune response to hepatitis B vaccination varies among individuals. It has been reported that polymorphisms in cytokine and cytokine receptor genes are associated with these individual differences. The aim of the current study was to investigate the association between polymorphisms of the Th1/Th2 cytokine and cytokine receptor genes and the response to hepatitis B vaccination in a Chinese Han population. A total of 10 single nucleotide polymorphisms distributed in 6 genes (TNFRSF1A, IL12A, IL12B, IFNG, IL4, and IL10) were genotyped in 214 high‐responders [hepatitis B surface antibody (anti‐HBs) ≥1,000 mIU/ml] and 107 low‐responders (anti‐HBs: 10–99 mIU/ml). The minor CTCTAA allele of rs17860508 in the IL12B gene was associated with a low response to hepatitis B vaccination (P = 0.039, odds ratio = 1.41, 95% confidence interval = 1.00–1.99). In addition, a significant gene–gene interaction was found: the frequency of the combined genotypes IL12A rs2243115 TT and IL12B rs17860508 CTCTAA/CTCTAA was significantly higher in the low‐response group than in the high‐response group (P = 0.008, odds ratio = 2.19, 95% confidence interval = 1.23–3.93). These findings suggest that polymorphisms in the IL12A and IL12B genes might play an important role jointly in determining the response to hepatitis B vaccination. J. Med. Virol. 84:26–33, 2011. © 2011 Wiley Periodicals, Inc.     

Association of PTPN22 gene polymorphisms with chronic hepatitis B virus infection in Chinese Han population

Lymphoid protein tyrosine phosphatase encoded by protein tyrosine phosphatase non-receptor 22 (PTPN22) gene plays an important regulatory role in T- and B-cell activation. This study investigated PTPN22 −1123G/C and intron 16 T/C polymorphisms in 372 patients with chronic hepatitis B virus (HBV) infection, 72 HBV infection resolvers and 273 healthy controls. Genotypic association tests between groups assuming codominant, dominant or log-additive genetic models were performed. In recessive model, PTPN22 −1123G/C genotype GG in healthy controls was more frequent than infection resolvers (P = 0.037, OR = 3.606, 95%CI = 1.079–12.053) and this genotype in HBV patients was more frequent than resolvers although the difference was not significant (P = 0.059). The PTPN22 intron 16 T/C genotype TC in cirrhosis patients was significantly higher than asymptomatic carriers (ASC) in codominant (P = 0.028, OR = 9.792, 95%CI = 1.281–74.832) and overdominant (P = 0.025, OR = 10.142, 95%CI = 1.332–77.214) models. This genotype in hepatocellular carcinoma (HCC) patients was significantly higher than ASC in codominant (P = 0.034, OR = 9.200, 95%CI = 1.176–71.990) and overdominant (P = 0.030, OR = 9.677, 95%CI = 1.241–75.442) models. These findings suggest that PTPN22 polymorphisms may predispose the chronicity or the development of cirrhosis and HCC in HBV infection.     

中国汉族人群白细胞介素10启动子区基因多态性的等位基因频率

目的：了解中国汉族人群中白细胞介素10（IL-10）启动子区基因多态性的等位基因频率。方法：应用聚合酶链-限制性片段长度多态性分析（PCR—RFLP）技术,对131例健康中国汉族受检样本进行IL-10592、819、-1082三个位点的基因型检测。结果：IL-10-592位点A／A、C／A、C／C基因型频率分别为42．7％、36．6％、20．7％,IL-10 -819位点T／T、T／C、C／C基因型频率分别为42．7％、36．6％、20．7%;其相关等位基因频率与意大利高加索人及英国曼彻斯特人相比有显著性差异,但与韩国人之间的差异无统计学意义。结论：不同国家人群间存在IL-10启动子区基因多态性的差异。     

肺表面活性物质蛋白B基因多态性与新生儿呼吸窘迫综合征易感性的研究

目的探讨肺泡表面活性物质蛋白B（SPB）基因多态性与新生儿呼吸窘迫综合征易感性的关系。方法收集华中科技大学同济医学院附属同济医院的新生儿呼吸窘迫综合征（NRDS）诊断病例为病例组,并按1∶2比例收集胎龄和出生体重相匹配的无明显感染症状早产儿为对照组。应用聚合酶链反应-限制性片段长度多态（PCR-RFLP）分析技术及基因测序技术检测SPB-18A/C及SPB1580C/T多态性,观察两组间基因型频率和等位基因频率的差异。并复习文献比较本研究汉族与其他种族人群等位基因频率的差异。结果 2008至2010年NRDS组91例,对照组182名进入分析。①SPB-18A/C基因在NRDS组AA,AC,CC基因型频率分别为11.0%、40.7%和48.4%,对照组分别为6.6%、31.3%和62.1%;两组基因型频率差异无统计学意义（P〉0.05）;NRDS组A等位基因频率显著高于对照组（31.3%vs22.3%）。②SPB1580C/T基因在NRDS组TT、TC和CC基因型频率分别为5.5%、63.7%和45.1%,对照组分别为30.8%、6.6%和48.4%;两组基因型频率差异无统计学意义（P〉0.05）;NRDS组C等位基因频率显著高于对照组（79.1%vs70.9%）。③本研究汉族人、美国人、巴西人和丹麦人SPB1580等位基因C频率分别为79%、35%、41%和46%,差异有统计学意义（P〈0.05）,与日本人群等位基因C频率（72%）差异无统计学意义（P〉0.05）;本研究汉族人、巴西人、美国人和丹麦人SPB-18等位基因A频率分别为31%、58%、57%和61%,差异有统计学意义（P〈0.05）。结论本研究汉族人群SPB-18A/C及SPB1580C/T基因多态性是NRDS的危险因素。不同种族人群SPB1580C/T和SPB-18A/C基因多态性分布存在明显差异。     

广西人群S100B基因多态性与系统性红斑狼疮的相关性研究

目的:探讨S100B基因rs9984765、rs2839356和rs2186358遗传多态性与系统性红斑狼疮(SLE)的相关性。方法:选取313例SLE患者作为病例组,年龄和性别匹配的396例正常人作为对照组,采用单碱基延伸PCR技术(SBE-PCR)和DNA测序法对S100B基因3个位点进行基因分型检测。结果:rs9984765和rs2186358位点的基因型和等位基因频率在SLE患者组和对照组间分布差异均无统计学显著性,而rs2839356位点的C等位基因在两组间比较差异有统计学意义(P=0. 040)。进一步分析rs2839356位点的等位基因与SLE患者临床表现的关系,发现rs2839356位点的C等位基因在伴有神经系统病变的SLE患者中高于不伴有神经系统病变的SLE患者(P=0. 023)。结论:在广西人群中,S100B基因rs9984765和rs2186358位点的基因多态性可能与SLE的遗传易感性无关,而携带rs2839356的C等位基因可能具有增加SLE及其并发神经系统病变的发病风险。     

Association of NCOA2 gene polymorphisms with obesity and dyslipidemia in the Chinese Han population

Background: Nuclear receptor coactivator 2 (NCOA2) gene plays an important role in adipogenesis and lipid metabolism. NCOA2 gene null mice exhibited less fat accumulation and lower serum lipid levels, and were protected against obesity. Few studies are known to have analyzed the association of NCOA2 gene single nucleotide polymorphisms with obesity and serum lipid profile. Our study aimed to evaluate the association of NCOA2 gene polymorphisms with the risk of obesity and dyslipidemia in the Chinese Han population. Methods: Two NCOA2 gene polymorphisms (rs41391448 and rs10504473) were selected and genotyped in a Chinese Han cohort with 529 participants. The effect of different genotypes on BMI and serum lipid levels (TG, TC, LDL-C and HDL-C) was performed by the analysis of covariance. Association of NCOA2 polymorphisms with obesity and dyslipidemia was assessed by odds ratios (OR) and 95% confidence intervals (CI) under the unconditional logistic regression analysis. Results: Significant association was observed between rs10504473 polymorphism and obesity under the recessive model (OR = 1.88, 95% CI 1.02-3.45, P = 0.047; adjusted OR = 1.87, 95% CI 1.02-3.44, P = 0.048). However, no association remained significant after Bonferroni correction. Conclusion: Our study suggests a possible association between NCOA2 rs10504473 polymorphism and obesity, and this SNP may influence the susceptibility of obesity in the Chinese Han population.     

骨保护素基因单核苷酸多态性与类风湿关节炎发病的相关性研究

 目的：探讨骨保护素（OPG）基因163A/G及245T/G单核苷酸多态性（SNPs）与我国汉族人群类风湿关节炎（RA）发病的相关性。方法：采用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）技术检测我国南方汉族正常人群及RA患者的OPG 163A/G 和245T/G 2个SNP位点;进行Hardy-Weinberg平衡检验;计算基因型和等位基因频率,及这2个位点的连锁关系,并分析这2个SNP位点与RA的关系。结果：所研究基因分布符合Hardy-Weinberg平衡,163A/G 位点基因型AA、AG、GG分布频率在2组比较有显著差异（P<0.05）;等位基因A、G分布比较在2组有显著差异（P<0.05）,携带163GG基因型者发生RA的危险性是非携带者的1.219倍（OR=1219, 95％CI：1066~2.339, P<0.05)。但245T/G位点各基因型及等位基因频率在2组中均未见差异（P>005）。结论：OPG 基因 163A/G SNP可能与我国汉族人群RA发病相关,携带G等位基因可能是发病的危险因素。     

DNA修复基因XPC Ala499Val、Lys939Gln多态与肺癌易感性

目的 探讨中国人DNA修复基因XPC Ala499Val、Lys939Gln多态与肺癌易感性的关系。方法 以社区为基础的病例对照研究。经组织学确诊的肺癌病例320例,相同地区年龄和性别频数匹配的人群对照322人,以PER为基础的方法进行多态性检测,比较不同基因型与肺癌风险的关系,并探讨吸烟在其中的影响。结果 与携带499 Ala／Ala基因型者比较,携带至少1个499Val等位基因者（即Ala／Val和Val／Val基因型）肺癌风险增加1．54倍（95％CI=1．11～2．14）,而同时有499和939两个位点变异等位基因者肺癌风险增加2．55倍（95％CI=1．45～4．52）。交互作用分析显示,XPC 499Val变异基因型与吸烟具有超相乘模型的交互作用,同时有两个位点变异等位基因并吸烟者肺癌风险增加可高达7．36倍（95％CI=3．19～17．0）。结论 XPC Ala499Val和Lys939Gln多态可能与中国汉族人群肺癌遗传易感性有关,并可显著增加吸烟对肺癌的危险性。     

组织型激肽释放酶基因多态性与长沙地区汉族人群脑出血的关联研究

目的 分析长沙地区汉族人群脑出血与组织型激肽释放酶(kallikrein 1,KLK1)基因多态性的关系.方法 收集273例散发性脑出血患者和140名正常对照者的外周血标本.采用多重单碱基延伸单核苷酸多态分型技术和DNA测序法检测KLK1基因rs5516及rs5517多态性位点在两组人群中的分布.结果 (1)脑出血组及对照组KLK1基因rs5516多态和等位基因频率分布差异无统计学意义(P>0.05);脑出血组组织型KLK1基因rs5517多态A等位基因频率显著高于对照组(P<0.05).(2)对照组rs5517多态AA及GA基因型携带者舒张压水平显著高于GG基因型携带者(P<0.05);而rs5516位点各基因型亚组间血压水平差异无统计学意义(P>0.05).结论 组织型激肽释放酶基因rs5516多态性与脑出血无关,而组织型激肽释放酶基因rs5517多态性与脑出血存在关联,可能通过影响血压水平而参与脑出血的发生发展.