IL-10基因启动子-592A/C多态性与HBV感染预后的关系

摘 要 目的：探讨湖北汉族人白细胞介素-10（IL-10）基因启动子区-592位点单核苷酸多态性与乙型肝炎病毒（HBV）感染、转归的关系。方法：采用聚合酶链反应-限制性片段长度多态性分析（PCR-RFLP）方法，检测231例慢性HBV感染者（其中慢性乙型肝炎75例，无症状携带156例），165例HBV感染自愈者和135例正常对照者IL-10基因启动子区-592A/C位点基因型。结果：IL-10基因启动子区-592A/C位点基因型和等位基因在慢性HBV感染组、HBV感染自愈组和正常对照组之间的分布频率比较差异无显著性（P>0.05），在血清HBV-DNA<1×103copies/mL的慢性HBV感染者组和HBV-DNA≥1×103 copies/mL组之间的分布频率比较差异亦无显著性（P>0.05）；但IL-10基因启动子区-592位点AA基因型和A等位基因在慢性乙型肝炎组出现的频率明显高于HBV无症状携带组，两组之间分布比较差异有显著性（P<0.05）。结论：汉族人IL-10基因启动子区-592位点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，但该位点基因多态性与HBV感染后的肝脏炎症反应有关。≥≥≥≥≥     

器官移植受者微量CMV DNA与IL-10基因单核苷酸多态性的相关性研究

目的研究白介素-10（IL-10）基因G1082A和C819T单核苷酸多态性（SNP）与移植术后外周血微量巨细胞病毒（CMV）DNA的关系。万法采集176例移植术后受者，429例次的外周血。通过巢式聚合酶链反应（nPcR）技术检测微量CMV DNA。通过序列特异性聚合酶链反应（SSP-PCR）技术检测IL-10基因G1082A与C819T的变异情况。分析IL-10各基因型在微量CMV DNA受者中的分布频率，并对阳性组与阴性组进行比较。结果研究人群中IL-10 G1082A和C819T基因型分布符合Hardy-Weinberg遗传平衡定律。CMV DNA阳性组IL-10 G1082A和C819T等位基因频率分别为G=3.75％、A=96.25％和C=32.50％、T=67.50％；CMV DNA阴性组分别为G=5.51％、A=94.49％和C=36.03％、T=63.97％。CMV DNA阳性组两SNP基因型及等位基因分布与其在CMV DNA阴性组中的分布差异无显著性（P〉0.05）。结论目前尚不能认为IL-10基因G1082A与C819T单核苷酸多态性与移植受者微量CMV DNA阳性有相关性。     

IL-10基因位点多态性与ACS的相关性分析

[目的]探讨急性冠脉综合征(ACS)与白介素-10(IL-10)基因位点4259A/G、-1082G/A、-592C/A、-819C/T多态性分布的相关性.[方法]选择2010年5月至2015年9月常州市溧阳人民医院心内科和武进人民医院心内科收治的ACS患者471例(观察组),选择同期两个医院心内科收治的197例非ACS者为对照组,采用基因测序技术检测所有标本IL-10基因型,分析其与ACS发病相关危险因素.[结果]两组在年龄、吸烟、合并糖尿病、血清TC、TG、LDL-C方面比较,差异均具有统计学意义(P<0.05).在两组研究对象中,IL-104259A/G位点仅发现AA一种基因型;但是在两组研究对象中发现IL-10-1082G/A位点上有GG、AG、AA三种基因型、IL-10-582C/A位点上有CC、AC和AA三种基因型、IL-10-819C/T位点上有CC、CT和TT三种基因型.与对照组作比较后,尚未发现各种基因型之间分布频率、等位基因分布频率有统计学差异;对每一种基因型行引起ACS发病传统危险因素多元Logistic回归分析显示IL-10基因-592C/A、-819C/T、-1082G/A基因型与ACS的发病无相关性.[结论]在常州地区心血管疾病住院患者IL-10基因4259A/G仅有AA一种基因型;IL-10基因-1082G/A、-592C/A、-819C/T具有多态性,但其多态性分布与本地区汉族人群ACS的发病无相关性.     

IL-10-592位点基因多态性与儿童EV71脑炎易感性关系

目的研究白细胞介素10（IL-10）基因启动子区-592C/A（IL-10-592C/A）位点基因多态性与肠道病毒71（EV71）易感性的关系,探讨不同基因型对EV71感染患病风险的影响。方法运用多重高温连接酶检测反应技术,检测EV71感染病儿及对照儿童IL-10-592C/A位点的基因多态性。结果 EV71感染重症组病儿基因型AC＋AA、等位基因A频率的分布与轻症组病儿比较差异有显著性（χ2=9.071、18.143,P〈0.05）。结论 IL-10-592C/A位点等位基因A、基因型AC＋AA的病儿感染EV71后易发展为重症。IL-10-592C/A位点基因型CC和C等位基因为EV71感染后不易发展为重症的保护基因。     

白细胞介素-10基因多态性与丙型肝炎病毒感染、病情及预后的相关性研究

目的 研究白细胞介素（IL）-10-1082位基因多态性与丙型肝炎病毒（HCV）感染的关系。方法 选择甘肃地区汉族人慢性丙型肝炎140例，正常对照70例。分组后采用等位基因特异引物聚合酶链反应（ASPCR）方法，分析IL-10-1082启动子基因多态性。结果 IL-10-1082位各基因型频率在HCV感染者中和在健康对照者中的差异无显著性（P〉0．05）。在丙氨酸氨基转移酶（ALT）〉80U／L及ALT〈40U／L2组之间，基因型频率相比差异无显著性（P〉0．05）。对抗病毒治疗应答组与无应答组基因型频率相比差异无显著性（P〉0．05），等位基因频率比较差异有显著性（P〈0．05）。对抗病毒治疗的反应与G等位基因有-定的相关性。HCV-RNA定量中高载量组与低载量组IL-10-1082位基因型频率相比差异无显著性（P〉0．05），等位基因频率相比差异亦无显著性（P〉0．05）。结论 甘肃地区HCV感染者IL-10-1082位基因多态性与对抗病毒治疗的反应有一定相关性。     

白细胞介素10启动子基因多态性与强直性脊柱炎的易感性

背景：在强直性脊柱炎患者中,基因多态性很可能影响细胞因子的分泌模式.目的：在中国胶东半岛地区汉族人强直性脊柱炎患者中,探讨白细胞介素10启动子基因的单核苷酸多态性和单体型与强直性脊柱炎易感性的相关性.方法：用酶联免疫吸附测定法测定血清中白细胞介素10的水平,用聚合酶链反应和限制性片段长度多态性方法对白细胞介素10基因启动子中的-1082A/G、-819C/T和-592C/A位点的单核苷酸多态性进行分析.结果与结论：收集了110例强直性脊柱炎患者和120例同种族的健康人,强直性脊柱炎患者组血清中白细胞介素10水平明显高于健康对照组（Z=10.9,P 〈0.001）,单核苷酸多态性分析显示：在强直性脊柱炎患者组和健康对照组之间-592A/C位点基因型分布和等位基因频率没有明显差异,该研究中没有发现-1082GG基因型.强直性脊柱炎患者-1082G等位基因频率较健康对照组增加（P=0.047）,通过logistic回归分析,强直性脊柱炎患者-1082AG 基因型的比值比为1.993（95%CI：1.046-3.800,P=0.034）,而-819CC基因型的比值比为3.125（95%CI：1.246-7.836,P=0.015）,此外,单体型分析显示与ATA 基因型相比,GCC基因型显著增加了患强直性脊柱炎的风险（OR=2.19,95%CI：1.13-4.26,P=0.020）.结果表明白细胞介素10的基因单体型与中国胶东半岛地区汉族人强直性脊柱炎的易感因素相关.     

IL-10基因启动子区-592A/C位点多态性与HBV感染转归的关系

目的探讨汉族人白细胞介素-10(IL-10)基因启动子区-592位点单核苷酸多态性与乙型肝炎病毒(HBV)感染、转归的关系。方法采用聚合酶链反应-限制性片段长度多态性分析(PCR-RFLP)方法,检测231例HBV感染者,165例HBV感染康复者和135例正常对照者IL-10基因启动子区-592A/C位点基因型。结果IL-10基因启动子区-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显著性(P>0.05),在血清HBV-DHA<1×103copies/ml的HBV感染者组和HBV-DHA≥1×103copies/ml组之间的分布频率比较差异亦无显著性(P>0.05);但IL-10基因启动子区-592A/C位点AA基因型和A等位基因在慢性乙型肝炎组出现的频率明显高于HBV无症状携带组,两组之间分布比较差异有显著性(P<0.05)。结论汉族人IL-10基因启动子区-592A/C位点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,但该位点基因多态性与HBV感染后的肝脏炎症反应有关。     

白细胞介素10-819C／T、-1082G／A基因多态性与脑梗死的关系

目的探讨白细胞介素10（IL-10）基因多态性与脑梗死（CI）的关系。方法采用突变错配扩增技术,结合血液生化和血压等临床资料,对189例急性CI患者（CI组）和92例非急性CI者（对照组）的IL-10启动子1082G／A和819C／T基因的单核苷酸多态性（SNP）位点与CI的关系进行研究。结果IL-10启动子1082G／A和819C／T的CI组的基因型和等位基因频率分布与对照组相比差异均无统计学意义（P〉0．05）;CI组的IL-10启动子1082AA型的收缩压明显高于（AG＋GG）型（P〈0．05）,且AA型的收缩压、舒张压、血糖均明显高于对照组（P〈0．05）,（AG＋GG）型的高密度脂蛋白胆固醇（HDL—C）明显低于对照组（P〈0．05）;CI组的IL-10启动子819CC型的收缩压、舒张压均明显高于TT型和CT型（P〈0．05）,且TT型的收缩压、舒张压、血糖均明显高于对照组（P〈0．05）,CT型的HDL—C明显低于对照组（P〈0．05）,CC型的收缩压、舒张压明显高于对照组（P〈0．05）。结论IL．10基因启动子1082G／A和819C／T的多态性与CI发生无明显相关,但与CI的发展和预后有-定关联。     

血清IL-10水平及其基因-1082A/G位点单核苷酸多态性与胃窦癌恶病质的关系

目的探讨胃窦癌病人血清细胞因子白细胞介素10（IL-10）水平及-1082A/G位点单核苷酸多态性与恶病质发生的关系。方法采用放射免疫学方法检测150例胃窦癌病人及135例健康人（对照组）血清IL-10水平。用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）方法检测胃窦癌病人IL-10基因-1082A/G位点单核苷酸多态性。结果胃窦癌病人血清IL-10水平较对照组显著升高（Z=-11.862,P〈0.001）,胃窦癌Ⅲ、Ⅳ期病人血清IL-10水平较Ⅰ、Ⅱ期显著升高（Z=-10.028,P〈0.001）。胃窦癌恶病质病人血清IL-10水平较非恶病质病人显著升高（Z=-10.369,P〈0.001）。Logistic回归分析显示,IL-10为恶病质发生的高风险性因素（OR=1.559,95%CI=1.299-1.870,P〈0.001）。单核苷酸多态性分析显示,胃窦癌恶病质病人IL-10基因-1082G等位基因频率较非恶病质病人显著升高（χ2=3.953,P〈0.05）。胃窦癌恶病质病人IL-10基因-1082AG基因型频率较非恶病质病人显著升高（χ2=4.511,P〈0.05）。Logistic回归分析显示,校正肿瘤分期后,IL-10基因-1082AG基因型为胃窦癌恶病质的高风险性因素（OR=2.295,95%CI=1.029-5.117,P〈0.05）。结论血清IL-10水平高及IL-10基因-1082AG基因型与胃窦癌病人恶病质的发生具有相关性。     

CD4+T细胞及其相关前炎症细胞因子基因多态性与胃癌发生的关系

目的 探讨CD4+T细胞及其前炎症细胞因子基因多态性与胃癌发生的关系.方法 ①采用PCR-RFLP法检测170例胃癌患者及110例健康对照者肿瘤坏死因子(TNF)-β+252、白细胞介素(IL)-10启动子-1082和IL4内含子3基因多态性.②流式细胞术检测63例胃癌患者和31例健康对照者T细胞亚群和共刺激分子CD28.结果 ①非贲门胃癌组TNF-β+252*A等位基因频率和IL-10启动子-1082A等位基因频率高于健康对照组(P＜0.05或0.01).IL-4内含子3基因多态性与非贲门癌患者无明显相关(P＞0.05).贲门癌组IL-4内含子3 RP2基因频率明显高于健康对照组,RP1基因频率低于健康对照组(均P＜0.01).②胃癌组外周血总T细胞、CD4+T细胞和CD8+T细胞均较健康对照组显著减少(P＜0.001或0.05);CD28表达率胃癌组较健康对照组显著增高(P＜0.001).术后1周总T细胞和CD4+T细胞明显上升(P＜0.05).CD28表达率明显下降(P＜0.05).结论 CD4+T细胞亚群异常与胃癌发生关系密切.TNF-β+252*A等位基因和IL-10启动子-1082A等位基因可能是胃癌发生的易感基因,IL-4内含子3-RP2等位基因与贲门癌的发生有一定相关.     

Interleukin-10-1082 promoter polymorphism in association with cytokine production and sepsis susceptibility

Objective To investigate the -1082 (A/G) polymorphism in the promoter of the IL-10 gene in terms of IL-10 production from stimulated peripheral blood mononuclear cells (PBMC) and to evaluate the relationship of this polymorphism with susceptibility to severe sepsis and the outcome of the disease. Design Case-control study. Setting Research laboratory of Molecular Biology and Immunology and University Hospital ICU, Faculty of Medicine, Trakia University. Patients A total of 53 healthy volunteers and 33 patients in ICU meeting the criteria for severe sepsis were included. Measurements and results The amplification refractory mutation system PCR was used for IL-10-1082 polymorphism detection. Isolated PBMC were stimulated with either C3-binding glycoprotein (C3bgp), lipopolysaccharide (LPS), phytohemagglutinin (PHA),or pokeweed mitogen (PWM). IL-10 production was measured in culture supernatants. The AA genotype was associated with lower IL-10 production in LPS-, PHA- or PWM-stimulated healthy PBMC. Patients with severe sepsis had significant elevation of A allele, compared with healthy controls (74.2% vs 52.8%; p = 0.0062). Carriage of at least one copy of IL-10-1082 G allele in sepsis patients and in healthy controls resulted in a statistically significant increase in IL-10 production from stimulated PBMC. Surviving sepsis patients had a significant decrease of IL-10-1082 allele G frequency, compared with controls (17% vs 47.2%; p = 0.012). An association between increased IL-10 production and poor outcome from sepsis was observed. Conclusion The A allele of the -1082 polymorphism in the interleukin-10 gene promoter is associated with sepsis susceptibility, whereas G allele is associated with higher stimulated interleukin-10 production and increased mortality in severe sepsis.     

Comparison of two polymorphisms of the interleukin-1 gene family: interleukin-1 receptor antagonist polymorphism contributes to susceptibility to severe sepsis.

OBJECTIVES: To determine whether the allele frequencies and genotype distribution of an interleukin (IL)-1beta TaqI polymorphism and an interleukin-1 receptor antagonist polymorphism are associated with susceptibility to and outcome of severe sepsis. In addition, we analyze a possible linkage disequilibrium between a previously described NcoI polymorphism within the tumor necrosis factor (TNF) locus and the two IL-1 gene family polymorphisms. DESIGN: Prospective, consecutive entry study of patients with diagnosis of severe sepsis. SETTING: Intensive care unit (ICU) of a university hospital. PATIENTS: Ninety-three patients with diagnosis of severe sepsis admitted to the ICU between June 1993 and June 1996. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The polymorphic region within intron 2 of the IL-1ra gene containing variable numbers of a tandem repeat of 86 base pairs was amplified by means of the polymerase chain reaction. Alleles A1-5 are identified according to the size of the amplified DNA product. The region that contains the biallelic TaqI site within exon 5 of the IL-1beta gene was analyzed by polymerase chain reaction amplification and subsequent digestion using the TaqI restriction enzyme. A NcoI TNF-beta polymorphism was determined. The allele frequency of the allele IL-1raA2 was increased in 93 patients with severe sepsis compared with normal individuals (p < .01). No association with patients' outcome was observed. Allele frequencies or genotype distribution of the IL-1beta TaqI polymorphism did not differ between patients and controls. In addition, the allele TNFB2 of the NcoI TNF-beta polymorphism was associated with nonsurvival. Occurrence of the TNFB1 and TNFB2 alleles and genotypes was unrelated to alleles and genotypes of the two IL-1 gene family polymorphisms. CONCLUSION: In contrast to the TNF-beta NcoI polymorphism, which has been associated with patients' nonsurvival, the allele IL-1raA2 of the polymorphism within the intron 2 of IL-1ra may contribute to susceptibility to sepsis.     

Analysis of two human leukocyte antigen-linked polymorphic heat shock protein 70 genes in patients with severe sepsis.

OBJECTIVE: To determine whether the genotype and allelic frequencies of two human leukocyte antigen-linked bi-allelic 70-kilodalton heat shock protein (HSP70) gene polymorphisms are associated with susceptibility to and outcome of severe sepsis. Furthermore, we investigated a possible linkage between HSP70 gene polymorphisms and the previously reported and mortality-related tumor necrosis factor-beta (TNF-beta) NcoI gene polymorphism. DESIGN: Consecutive entry study of patients with severe sepsis. SETTING: Surgical intensive care unit in a university hospital. PATIENTS: Eighty-seven patients with a diagnosis of severe sepsis. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: We studied two bi-allelic polymorphisms within the coding region of the constitutively expressed HSP70-HOM C/T, and the stress-inducible HSP70-2 G/A in patients with severe sepsis. The HSP70-HOM Ncol, HSP70-2 Pstl, and TNF-beta NcoI polymorphisms were identified by means of the polymerase chain reaction followed by restriction analysis of the polymerase chain reaction product. No significant differences in genotype and allelic frequencies were observed for both HSP70 gene polymorphisms between the 87 patients and the 110 healthy Caucasians serving as the control group. In addition, no differences in genotype and allelic frequencies between surviving and nonsurviving patients were detected. The allelic frequencies in the group of nonsurvivors were 0.8 for the HSP70-HOM C allele and 0.2 for the HSP70-HOM T allele vs. 0.87 and 0.13 for the survivors (p > .05). The frequency for the HSP70-2 G allele was 0.36 and 0.64 for the HSP70-2 A allele in the group of nonsurvivors vs. 0.41 and 0.59 for the survivors (p > .05). Analysis of a possible linkage between HSP70 and TNF-beta genotypes resulted in a significant association (odds ratio, 4.15; p < .01) of the HSP70-2 A/A homozygous genotype and the TNFB2/B2 homozygous genotype, which is reported to be a genomic marker for a poor prognosis in severe sepsis. CONCLUSIONS: Our data show that the bi-allelic NcoI and PstI polymorphisms within the HSP70-HOM and HSP70-2 locus, respectively, are associated with neither susceptibility to nor outcome of severe sepsis. Moreover, we found a linkage between HSP70-2 A homozygotes and the previously reported and mortality-related homozygous genotype, TNFB2/B2, in patients suffering from severe sepsis.     

Genetic variation in interleukin-10 gene and risk of oral cancer

BACKGROUND: Common genetic variants in immune and inflammatory response genes can affect the risk of developing oral cancer. Interleukin-10 (IL-10) is an immunosuppressive cytokine which may facilitate development of cancer by supporting tumor escape from the immune response. Inter-individual variations in IL-10 production were genetically contributed to polymorphisms within IL-10 promoter region. We determined whether single nucleotide polymorphisms (SNPs) at positions -1082 A/G (rs1800870), -819 T/C (rs1800871) and -592 A/C (rs1800872) in the IL-10 gene promoter were involved in predisposing an individual to oral cancer. METHODS: We analyzed 3 SNPS of IL-10 gene promoter in 280 patients with oral cancer and 300 age and sex matched controls in a Chinese population, using a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) strategy. RESULTS: There were significant differences in the genotype and allele distribution of -1082 A/G (rs1800870) polymorphism of the IL-10 gene among cases and controls. The -1082 G alleles carriers were associated with a significantly increased risk of oral cancer compared with the non-carriers (OR=1.821, 95% CI, 1.329-2.496, P<0.001). Haplotype analysis revealed that the GCC haplotype (defined by SNPs at positions -1082, -819 and -592) of IL-10 gene conveys the highest risk for oral cancer compared with the ATA haplotype (OR=1.716; 95% CI, 1.230-2.395; P=0.001). CONCLUSION: IL-10 gene promoter -1082 A/G (rs1800870) polymorphism, and its haplotype are significantly associated with the risk of oral cancer. Our data suggests that IL-10 gene plays an important role in the development of oral cancer.     

银屑病患者白介素-20基因多态性和临床表型研究

目的：研究银屑病患者中自介素-20（IL-20）基因启动子区-1679位点单核苷酸多态性与上呼吸道感染（URI）间的相关性。方法：采用序列特异引物聚合酶链反应（PCR—SSP）检测上海周边地区340例汉族银屑病患者及193名正常对照者的IL-20基因多态性。并将银屑病患者按是否与URI相关分组，其中以URI为诱发或加重因素者为106例；不以URI为诱发或加重因素者234例，2组分别与对照组进行比较。结果：①银屑病患者与正常对照者间启动子区-1679位点的基因型和等位基因组成差异有统计学意义（分别为P〈0．05，P〈0．01）。（爹以UR]为诱发或加重因素的银屑病患者与正常对照者间在此位点的基因型和等位基因的分布差异亦均有统计学意义（分别是P〈0．05，P〈0．01）；而与URI无关的银屑病患者与对照者间在此位点的基因型和等位基因的分布差异均无统计学意义（P〉0．05）。结论：①上海周边地区汉族人群中，IL-20基因-1679位点的C等位基因可能具阻止银屑病发生的作用，而G等位基因可能增加其银屑病易感性。与URI相关的银屑病患者与正常对照者相比，G等位基因的频率明显增加，提示G等位基因可能使正常人在微生物感染后更易诱发银屑病或使银屑病患者原有疾病加重。     

雌激素受体α基因多态性与女孩性早熟关系的研究

目的探讨雌激素受体-α（ERα）基因多态性与江西地区女孩性早熟的相关性。方法应用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）分析技术,检测90例江西地区性早熟女孩和70例江西地区健康体检女孩ERα基因内含子1 Pvu Ⅱ T/C和XbaI A/G酶切位点基因多态性,并观察基因型对血清E2的影响。结果病例组ERα基因XbaⅠ基因型和等位基因频率分布与对照组相比差异有显著性（P〈0.05）,其中等位基因X使女孩性早熟发病风险提高了2.26倍（95%CI：1.35-3.78）;纯合子基因型（XX）、杂合子基因型（Xx）与野生型基因型（xx）相比,患性早熟的危险度分别为1.32倍（95%CI：0.46-3.81）和2.51倍（95%CI：1.27-4.97）。E2增高组ERα基因XbaⅠ基因型分布与E2正常组相比差异有显著性（P〈0.05）;Pvu Ⅱ基因型和等位基因频率分布在病例组与对照组、E2增高组与E2正常组相比差异均无显著性。结论 ERα基因XbaⅠ位点多态性与女孩性早熟有关,突变基因增加了女孩性早熟的发病风险,Xx基因型最易患病。     

白细胞介素1受体拮抗剂及白细胞介素1β基因多态性与脓毒症的相关性研究

目的 探讨白细胞介素1受体拮抗剂(interleukin-1 receptor antagonist,IL-1Ra)基因可变串联重复序列(variable number of tandem repeats,VNTR)多态性及白细胞介素1β(interleukin-1β,IL-1β)基因外显子5多态位点TaqⅠ与天津地区脓毒症的相关性.方法 应用聚合酶链反应(PCR)法和限制性片段长度多态性(RFLP)方法,观察90例脓毒症患者、120例健康对照者的IL-1Ra基因VNTR基因多态性及基因IL-1β外显子5多态位点Taq Ⅰ的分布.结果 正常对照组中A2型等位基因和A1/A2基因的分布频率与脓毒症组相比明显增加(8.3%vs 2.2%,P<0.05;16.7%vs 4.4%,P<0.05),IL-1β外显子5Taq Ⅰ多态位点等位基因频率及基因型分布与健康对照组差异均无统计学意义.结论 IL-1RaA2等位基因在脓毒症的发生发展过程中可能具有潜在的保护作用.     

白细胞介素6基因-174G/C和-634C/G多态性与冠心病的相关性研究

目的探讨白细胞介素6(interleukin6,IL6)基因启动子上游174G/C和634C/G基因多态性,在冠心病患者和正常人群中的分布及与冠心病的相关性。方法应用聚合酶链反应限制性片断长度多态性技术,对汉族199例冠心病患者及189名正常人群,白细胞介素6基因174G/C、634C/G位点进行研究,同时结合血脂、脂蛋白和载脂蛋白水平,探讨两者之间的关系。结果正常人群和冠心病患者的174G等位基因频率均为0.99。174C等位基因频率均为0.01。634C等位基因频率在正常人群和冠心病患者分别为0.82和0.76,G等位基因频率分别为0.18和0.24,两者差异有统计学意义(P<0.05)。冠心病患者634GG基因型频率(0.08)明显高于对照组(0.02)(P<0.05)。结论白细胞介素6基因174位点多态性与冠心病无关,而634位点多态性与冠心病有相关性。G等位基因可能是汉族人群冠心病的易感性标志。