Tim-1基因多态性与湖北地区汉族成人变应性哮喘关系的研究

目的：分析湖北地区汉族成人T细胞免疫球蛋白域粘蛋白域蛋白-1(Tim-1)外显子4插入(ins)／缺失(del)多态性和内含子8拼接供体部位(间插序列intervening sequence，IVS)8 9G／A的单核苷酸多态性(Single Nucleotide Polymorphism，SNP)，探讨与支气管哮喘易感性的关系。方法：采用聚合酶链反应(PCR)检测100例湖北地区健康者和119例变应性哮喘患者Tim-1外显子ins／del和IVS8 9G／A的SNP，计算基因型和等位基因频率。结果：①湖北地区汉族健康成年人群Tim-1外显子4del／del纯合子、del／ins杂合子和ins／ins纯合的频率分别是0.620、0.300和0.080；Tim-1 IVS8 9G／G、G／A和A/A的频率分别是0.780、0.190和0.030。②变应性哮喘患者Tim-1外显子4del／del纯合子、del／ins杂合子和ins／ins纯合的频率分别是0.613，0.353，0.034，与对照组无显著性差异，Tim-1 IVS8 9G／G、G／A和A/A的频率分别是0.790，0.202，0.008，与对照组无显著性差异。结论：湖北汉族人群存在。Tim-1外显子4插入／缺失和IVS8 9G／A多态性，其分布与日本人群相似，Tim-1多态性与湖北地区汉族成人变应性哮喘无相关性。     

TIM-4基因多态性与湖北地区汉族人群支气管哮喘易感性的研究

目的 探讨T细胞免疫球蛋白域及黏蛋白域蛋白-4(T cells immunoglobulindomain andmucindomain protein-4,TIM-4)基因外显子2区Lys65Lys(G/A)、外显子9区Val1365Met(G/A)的单核昔酸多态性(SNP)与湖北地区汉族人群支气管哮喘易感性的关系.方法 采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)的方法对湖北地区185例哮喘患者和162例健康者TIM-4基因外显子2区Lys65Lys(G/A)、外显子9区Vai365Met(G/A)的多态性进行分析,计算基因型和等位基因频率.结果 (1)湖北地区汉族人群健康者TIM-4基因外显子2区Lys65Lys(G/A)位G/G、G/A、A/A基因型频率分别为0.840、0.160、0,而哮喘人群其频率分别为0.859、0.141、0,其基因型和等位基因型频率与对照组相比差异均无统计学意义(P=0.603,P=0.618);(2)本试验未检测到TIM-4外显子9区Va1365Met(G/A)的多态性.结论 湖北地区汉族人群TIM-4基因外显子2区Lys65Lys(G/A)存在单核苷酸多态性变异,但该位点的变异与湖北地区汉族人群支气管哮喘易感性无关;TIM-4基因外显子9区Va1365Met(G/A)在湖北地区汉族人群中未发现单核苷酸多态性.     

TIM4基因多态性与湖北汉族变应性哮喘的相关性研究

目的分析湖北地区汉族人群T细胞免疫球蛋白域黏蛋白域蛋白4（T cells immunoglobulin domin and mucin domain protein 4，TIM4）基因8570G〉A、11515C〉A单核苷酸多态性，探讨其与变应性哮喘易感性之间的关系。方法采用聚合酶链反应和限制性片段长度多态性对145例变应性哮喘患者和130名健康对照T／M4基因8570G〉A和11515C〉A多态性进行分析，计算基因型和等位基因频率。结果湖北地区健康人群TIM48570G〉AGG、GA和AA基因型频率分别是0．985、0．015和0，而哮喘患者其频率分别为0．931、0．069、0，基因型和等位基因频率在病例组与对照组间差异有统计学意义（P=0．030，P=0．032）；未检测到T／M4基因11515C〉A的多态性。结论湖北汉族人群T／M4基因8570G〉A存在单核苷酸多态性变异，可能与湖北地区汉族变应性哮喘易感性有关。     

信号转导和转录激活因子6基因多态性与湖北汉族人变应性哮喘的相关性研究

目的　探讨信号转导和转录激活因子 (STAT) 6基因 3′非翻译区G2 96 4A位点多态性和第一外显子GT串联重复序列遗传多态性与湖北汉族人变应性哮喘易感性的关系。方法　用聚合酶链反应 限制性片段长度多态性 (PCR RFLP)技术检测STAT6基因G2 96 4A位点多态性 ;用聚合酶链反应 短串联重复多态性 (PCR STR)技术对STAT6基因第一外显子微卫星进行分型 ,并将PCR产物克隆及测序鉴定 ;采用病例 对照法研究了 1 35例变应性哮喘患者和 1 0 9例对照。结果　 ( 1 )湖北地区汉族人群STAT6基因G2 96 4A位点基因型以GA型最为常见 ;哮喘组与对照组STAT6基因G2 96 4A位点的等位基因频率和基因型频率GG、GA、AA之间差异无统计学意义 (P >0 .0 5)。 ( 2 )STAT6基因第一外显子微卫星多态性共检出GT串联重复次数为 1 3、1 4、1 5、1 6的 4种等位基因 ;第一外显子微卫星的多态性检测出 1 3/1 4基因型在哮喘患者组和正常对照组相比差异具有统计学意义(P =0 .0 0 1 4 )。 ( 3)STAT6基因第一外显子GT二核苷酸串联重复序列多态性中 1 3 GT重复等位基因与 2 96 4A变异体之间存在连锁不平衡 (P =0 .0 0 0 0 2 1 8)。结论　STAT6基因 3′非翻译区G2 96 4A位点多态性与湖北汉族人哮喘易感性无明显相关性 ;第一外显子GT二核苷酸串联重     

系统性红斑狼疮患者血清中Tim-1蛋白水平及其基因多态性

目的:检测T细胞免疫球蛋白黏蛋白域蛋白-1(Tim-1)在系统性红斑狼疮患者和健康对照组血清中的浓度,比较不同基因型间Tim-1蛋白的浓度,及其基因第4外显子插入/缺失多态性,分析其与系统性红斑狼疮的关系。方法:采用ELISA方法测定Tim-1蛋白在血清中的浓度;PCR反应检测TIM-1的第4外显子插入与缺失多态性,计算基因型与等位基因的频率。结果:系统性红斑狼疮患者和健康对照组血清中Tim-1蛋白的浓度分别是:(263.083±276.953)和(58.527±92.424)pg/ml,两组之间的差异有统计学意义;SLE患者TIM-1的第4外显子缺失/缺失纯合子与缺失/插入杂合子的Tim-1蛋白的浓度分别为(307.360±284.079)和(191.750±256.708)pg/ml,两组之间无显著性差异。健康对照组TIM-1的第4外显子缺失/缺失纯合子与缺失/插入杂合子的Tim-1蛋白的浓度分别为(70.295±109.917)和(40.468±41.739)pg/ml,两组之间无显著性差异。对照组的TIM-1的第4外显子缺失/缺失纯合子,缺失/插入杂合子,插入/插入纯合子基因型频率分别是0.617,0.321,0.062;系统性红斑狼疮患者相应的基因型频率是0.652,0.326,0.022。两组之间无显著性差异。结论:Tim-1蛋白在系统性红斑狼疮患者血清中的浓度升高,与系统性红斑狼疮的正相关。但是第4外显子插入与缺失多态性与系统性红斑狼疮无相关性,该突变不改变Tim-1蛋白在血清中的水平。     

湖北汉族人群TIM-3基因多态性与变应性哮喘的相关性

目的分析湖北地区汉族人群T细胞免疫球蛋白域粘蛋白域蛋白-3（T cell simmunoglobulin domain and mucin domain protein-3，TIM-3）启动子区-1541C／T和-574G／T单核苷酸多态性，探讨其与支气管哮喘易感性之间的关系。方法分别采用聚合酶链反应-限制性片段长度多态性和等位基因特异性聚合酶链反应检测湖北地区153例哮喘患者和130名健康者TIM-3启动子区-1541C／T和-574G／T的单核苷酸多态性，计算基因型和等位基因频率。结果（1）湖北地区健康人群TIM-3启动子区-1541位CC、CT和TT基因型频率分别是0．961、0．039和0，而哮喘人群其频率分别为0．935、0．065、0，其基因型和等位基因频率均与对照组差异无统计学意义（P=0．314，P=0．321）；（2）湖北地区健康人群TIM-3启动子区-574位GG、GT和TT基因型频率分别是0．992、0．008和0，而哮喘人群频率分别为0．941、0．059、0，其基因型和等位基因频率均与对照组差异有统计学意义（P=0．046，P=0．048）。结论湖北汉族人群TIM-3启动子区存在多态性变异，其中-574G／T单核苷酸多态性可能与湖北地区汉族成人变应性哮喘易感性有关。     

Tim-3启动子区-574基因多态性与变应性哮喘的关系

目的:探讨引物特异PCR-核酸序列测定技术检测T细胞免疫球蛋白域粘蛋白域蛋白-3(Ti m-3)启动子区-574G>T单核苷酸变异及其与湖北地区汉族人群支气管哮喘易感性之间的关系。方法:分别采用引物特异聚合酶链反应(PCR)-核酸序列测定技术检测湖北地区296例哮喘患者和202例健康对照人群Ti m-3启动子区-574G>T单核苷酸变异,计算基因型和等位基因频率。结果:湖北健康人群中Ti m-3启动子区-574位G/G、G/T和T/T基因型频率分别是0.990、0.010和0,而哮喘患者频率分别为0.929、0.071、0,其基因型频率与对照组差异有显著性(χ2=10.14,P<0.01)。结论:引物特异PCR-核酸序列测定技术可用于检测Ti m-3启动子区-574G>T单核苷酸变异的检测;湖北汉族人群中Ti m-3启动子区存在多态性变异,其中-574G>T多态性可能与湖北汉族人群变应性哮喘易感性有关。     

CC16 基因G38A突变与汉族哮喘相关性的研究

目的 检测中国重庆汉族人群CC16基因第1外显子突变在支气管哮喘和正常人群中的频率，探讨该基因的多态性和哮喘的相关性。方法 应用聚合酶链反应和限制性片段长度多态性技术对50例支气管哮喘患者CCl6第1外显子基因频率和等位基因频率进行检测并与50例正常人进行对照。结果 CC16基因第1外显子G38A的基因型和等位基因型频率在哮喘组和对照组差异无显著性，并且该基因的基因型频率和等位基因型频率与哮喘病情的严重程度也无相关性。结论 中国重庆汉族人群中CCl6第1外显子G38A的突变与哮喘无相关性。     

中国山东地区先天性甲状腺功能减低症患者PAX8基因突变筛查研究

目的对中国山东地区先天性甲状腺功能减低症(简称甲低)患者PAX8第4外显子进行基因突变筛查,阐明中国山东地区甲低患者PAX8基因第4外显子突变特点。方法 453例标本来自山东甲状腺发育不全的先天性甲低患者,从外周血白细胞中提取全基因组DNA扩增PAX8第4外显子,对PCR产物进行直接测序分析。结果分析453例PAX8第4外显子测序结果未发现突变,但在1例患者第4内含子发现1个IVS4+83 T>C突变,在第4内含子区发现1个SNP位点(rs74370449,IVS4+101 G/A,变异频率为8.9%)。结论 PAX8基因第4外显子突变率在中国山东地区甲低患者中极低,PAX8第4内含子的突变可能与先天性甲低相关。     

儿童脓毒症纤溶酶原激活物抑制剂-1基因启动子区4G/5G多态性的研究

目的探讨纤溶酶原激活物抑制剂-1（PAI-1）基因启动子区单核苷酸插入或缺失（4G/5G）多态性与广州地区汉族脓毒症患儿的相关性,对脓毒症的发生、发展和临床预后的影响。方法选取2007年4-12月广州市妇女儿童医疗中心诊治的汉族脓毒症患儿为病例组,同期收集健康查体儿童为对照组。应用等位基因特异性扩增多聚酶链（AS-PCR）法对病例组和对照组行PAI-1基因启动子区4G/5G多态性检测和分析。采用基因计数法计算各组基因型频率和等位基因频率,χ^2检验分析比较两组人群各基因型的分布差异,计算OR值及其95%CI评估各基因型的风险。结果研究期间病例组纳入148例,对照组181名。病例组和对照组PAI-1基因启动子区4G/5G多态性的基因型和等位基因频率分布差异无统计学意义（χ^2=0.79,P〉0.05）。等位基因4G（χ^2=4.35,P〈0.05）及其纯合子（χ^2=4.44,P〈0.05）与脓毒症发展相关;携带等位基因4G患儿发展至重症脓毒症的风险比5G高,OR=4.05（95%CI：1.09-15.08）,4G/4G纯合子患儿发展至重症脓毒症的风险比其他基因型高,OR=4.57（95%CI：1.11-18.78）。等位基因4G（χ^2=9.17,P〈0.05）及其纯合子（χ^2=7.35,P〈0.05）与脓毒症病死率相关,携带等位基因4G患儿脓毒症病死风险较5G高,OR=4.30（95%CI：1.50-12.29）,4G/4G纯合子患儿脓毒症病死风险较其他基因型高,OR=3.14（95%CI：1.49-6.61）。结论PAI-1基因启动子区4G/5G多态性与广州地区汉族脓毒症患儿进展及预后相关,等位基因4G及其纯合子是其高危遗传因素;PAI-1基因启动子区4G/5G点多态性与脓毒症的易感性无关。     

Absence of association between two insertion/deletion coding genetic polymorphisms of TIM-1 gene and asthma in Chinese Han population

TIM-1, a member of T-cell immunoglobulin domain and mucin domain (TIM) gene family, was implicated as an asthma susceptibility gene in previous studies. TIM-1 was expressed on CD4(+) T cells after activation and its expression was sustained preferentially in T-helper type 2 (T(H)2) but not in T(H)1 cells, therefore TIM-1 became a good candidate gene for atopic diseases. Recent studies indicated that two insertion/deletion (ins/del) coding genetic polymorphisms in exon 4 of TIM-1 were associated with asthma susceptibility in some but not in all populations. In order to investigate the relationship between TIM-1 genetic polymorphisms and asthma in Chinese Han population, we performed a case-control study for two insertion/deletion polymorphisms in TIM-1 exon 4 (5383_5397ins/del and 5509_5511delCAA) and a single nucleotide polymorphism (SNP) in intron 8 (IVS 8+9 G/A) between a healthy control group of 309 people and an asthma patient group of 352 people recruited from Chinese Han population. The polymorphisms were genotyped and the allele and genotype frequencies were analysed, but none of the three polymorphisms showed association with asthma susceptibility in single-locus association analyses. Linkage disequilibrium (LD) analyses demonstrated that the two insertion/deletion polymorphisms were in strong LD but the haplotypes constructed from these two polymorphisms showed no significant association with asthma. In conclusion, our findings suggest that 5383_5397ins/del, 5509_5511delCAA and SNP IVS 8+9 G/A polymorphisms are not associated with asthma susceptibility in Chinese Han population.     

The association of TIM-3 gene polymorphism with atopic disease in Korean population

The family of T-cell immunoglobulin domain and mucin domain (TIM) proteins is identified to be expressed on T cells. A member of the TIM family, TIM-3 is selectively expressed on the surface of differentiated T helper 1 (Th1) cells. TIM-3 might have an important role in the induction of autoimmune diseases by regulating macrophage activation and interacts with the TIM-3 ligand to regulate Th1 responses. In the present study, we analyzed the association of the genotype and allele frequencies between asthma or allergic rhinitis patients and nonatopic controls using large samples size at −1516G > T, −574T > G, and 4259G > T polymorphic sites of the Tim-3 gene. The genotype and allele frequencies of −574T > G polymorphism in asthma patients (p = 0.042 and p = 0.017, respectively) as well as allergic rhinitis patients (p = 0.008 and p = 0.003, respectively) were significantly different from those of nonatopic controls. Furthermore, the allele frequency of 4259G > T polymorphism in allergic rhinitis patients (p = 0.029) was also significantly different. Our results strongly suggest that the −574T > G polymorphism of Tim-3 might be associated with the susceptibility of atopic diseases such as asthma and allergic rhinitis.     

湖北汉族变应性哮喘患者GPR154基因单倍型分析

目的探讨G蛋白偶联受体154(Gprotein-coupled receptor154,GPR154)基因多态性与湖北汉族变应性哮喘易感性间的关系。方法用聚合酶链反应和限制性片段长度多态性对145例变应性哮喘患者和120名健康人群GPR154基因的SNP563704和SNP522363位点的多态性进行分析。结果(1)变应性哮喘患者SNP563704 CC、CT和TT基因型频率是0.324、0.524和0.152;与对照组相比差异无统计学意义(χ2=1·880,P>0.05);变应性哮喘组不同基因型间血清总IgE水平差异无统计学意义(F=0.714,P>0.05)。(2)变应性哮喘患者SNP522363CC、CG和GG基因型频率是0.289、0.521和0.190;与对照组相比差异无统计学意义(χ2=0.700,P>0.05);变应性哮喘组不同基因型间血清总IgE水平差异无统计学意义(F=0·083,P>0.05)。(3)对SNP522363和SNP563704进行单倍型分析,4种频率大于0.03的单倍型在哮喘组和对照组间差异有统计学意义(χ2=16.50,P<0.01)。哮喘组CT和GT单倍型频率显著高于对照组,差异有统计学意义(P=0.015;P=0.002)。结论湖北汉族变应性哮喘易感性与单个的单核甘酸多态性无关,但与SNP522363和SNP563704组成的单倍型显著相关。     

Genetic variants of the T-cell immunoglobulin mucin 1 but not the T-cell immunoglobulin mucin 3 gene are associated with asthma in an African American population

BACKGROUND: The T-cell immunoglobulin mucin ( TIM ) proteins and their genetic variants have been suggested to play a role in regulating allergic diseases. OBJECTIVE: Genetic association of the sequence variants for TIM-1 and TIM-3 genes with asthma in an African American population was investigated. METHODS: Both case-control and family-based association analyses were performed for a total of 7 polymorphisms, including 3 single nucleotide polymorphism (SNPs) and 1 insertion/deletion polymorphism in the TIM-1 and 3 SNPs in the TIM-3 genes. The exposure to hepatitis A virus as judged by seropositivity was also examined. RESULTS: In the case-control design, the frequencies of the TT genotype for SNP rs2277025 and the homozygous deletion variant (157delMTTTVP) in the fourth exon of the TIM-1 gene were higher among patients with patients with asthma compared with the controls (odds ratio [OR], 2.779, P = .016; and OR, 3.09, P = .022, respectively). This association was substantiated by haplotype analysis of these and 2 additional SNPs (OR, 2.48; P = .004), and also by family-based tests for the allele and haplotype carrying 157delMTTTVP (P = .009 and P = .048, respectively). Furthermore, this association seems to exist even in the hepatitis A virus-seronegative subjects in our data. None of the 3 variants in TIM-3 genes yielded significant association with either asthma or asthma-related phenotypes. CONCLUSION: Our findings suggest that the genetic variants of the TIM-1 but not the TIM-3 gene contribute to asthma susceptibility in this African-American population.     

IgE高亲和力受体β链基因多态性与湖北汉族人变应性哮喘易感性的研究

目的探讨IgE高亲和力受体β链( high-affinity IgE receptor β gene, Fc ε RI β)基因启动子-109位C/T和编码区Glu237Gly基因多态性与湖北汉族人变应性哮喘易感性及血浆总IgE的关系. 方法采用聚合酶链反应-限制性片段长度多态性技术检测 Fc ε RI β基因启动子区-109位和编码区Glu237Gly两位点多态性,采用病例-对照法研究了216例变应性哮喘患者和198名对照. 结果 (1)湖北汉族人变应性哮喘患者 Fc ε RI β基因启动子区-109位T/T、T/C和C/C基因型频率是0.403、0.491和0.106;与对照相比差异无显著性(χ2=0.384,P＞0.05),但变应性哮喘组T/T基因型患者血浆总IgE对数值(2.539±0.8325)与T/C基因型的对数值(2.278±1.089)和C/C基因型的对数值(2.323±0.7852)相比差异具有显著性.(2)变应性哮喘患者 Fc ε RI β基因Glu237Gly位点Glu/Glu、Glu/Gly和Gly/Gly基因型频率为0.579、0.370和0.051,与正常对照相比差异具有显著性(χ2=13.62,P＜0.01),变应性哮喘患者Gly/Gly基因型血浆总IgE对数值为(2.622±0.9374),与Glu/Glu和Glu/Gly相比差异具有显著性. 结论 Fc ε RI β基因启动子区-109位T/T基因型与血浆总IgE高度相关,编码区237位Gly/Gly基因型与中国湖北汉族人变应性哮喘及血浆高IgE相关.