白细胞介素-1基因多态性与尘肺易感性的关系

目的 探讨白细胞介素-1（IL-1）基因多态性与尘肺易感性的关系.方法 以80例Ⅰ期矽肺和45例Ⅰ期煤工尘肺为病例,以与病例年龄相差小于5岁、同性别、同民族、同一工作地点、开始接尘时间和累积接尘工龄相差不超过2年的非尘肺接尘工人为对照,进行1：1配对.采集静脉血,用酚-氯仿法抽提DNA,采用聚合酶链反应限制性片段长度多态性（PCR-RFLP）和PCR方法检测IL-1α（-889）、IL-1β（-511）、IL-1 Ra（＋2018）和IL-1Ra数目可变的串联重复序列4个基因位点的基因型,并进行单因素、多因素分析.结果 两组IL-1α（-889）1/2＋2/2基因型的携带率的差异有统计学意义（P＜0.01）,病例组与对照组IL-1α（-889）等位基因2的频率分别为57.6%和40.8%,差异有统计学意义（P＜0.01）,多因素分析表明,IL-1α（-889）突变基因型及等位基因2为尘肺的危险因素.病例组与对照组之间IL-1β（-511）1/2＋2/2基因型、IL-1 Ra（＋2018）1/2＋2/2基因型和IL-1Ra VNTR1/2＋2/2基因型携带率的差异均无统计学意义（P＞0.05）,病例组与对照组IL-1β（-511）、IL-1 Ra（＋2018）和IL-1 Ra VNTR等位基因2的频率差异无统计学意义（P＞0.05）.矽肺组和煤工尘肺组间4个等位基因及基因型分布频率差异均无统计学意义（P＞0.05）.结论 IL-1α（-889）基因多态性与尘肺患病有关,携带IL-1α（-889）等位基因2的接尘者患尘肺的危险性增加,未发现IL-1β（-511）、IL-1Ra（＋2018）及IL-1 Ra VNTR基因多态性与尘肺发病有关联.     

白细胞介素基因多态性与布鲁菌病易感性的关系

布鲁菌病是一种动物疫源性疾病,可经过皮肤及黏膜、消化道、呼吸道等途径传染给人类。近年来,布鲁菌病发病率有增高趋势,发病机制较为复杂,除细菌、毒素等因素外,遗传易感性逐渐引起广泛重视,本文回顾了既往的相关报道,对白细胞介素基因多态性与布鲁菌病易感性的关系进行综述。     

白细胞介素-8基因多态性与矽肺易感性研究

目的 探讨白细胞介素(IL)-8基因多态性与矽肺易感性的关系.方法 选择确诊的101例矽肺患者为病例组,以接触同性质粉尘、首次诊断年龄相近的非矽肺的接尘工人为对照(121例).采集外周静脉血,盐析法提取DNA,应用聚合酶链-限制性片段长度多态性(PCR-RFLP)技术检测IL-8(Met31Arg、781C/T、-251A/T、RA+860)4个位点的基因型和等位基因频率并进行分析.结果 两组对象的首次诊断年龄、累积接尘工龄、吸烟率的差异均无统计学意义(P＞0.10).病例组IL-8(Met31Arg)GT基因型的分布频率为12.87%,对照组为2.48%,差异有统计学意义(P＜0.05),病例组和对照组携带等位基因G的频率分别为6.44%和2.07%,差异有统计学意义(P＜0.05).病例组IL-8(-251A/T)从基因型的分布频率为9.90%,对照组为25.62%,差异有统计学意义(P＜0.05).病例组IL-8(781C/T)基因型CC、CT、TT的分布频率分别为38.61%、40.59%、20.79%,与对照组(46.28%、40.50%、13.22%)相比,差异无统计学意义(P＞0.05).病例组IL-8(RA+860)基因型GG、GC、CC的分布频率分别为75.25%、21.78%、2.97%,与对照组(80.17%、14.88%、4.96%)相比,差异无统计学意义(P＞0.05).结论 IL-8的Met31Arg位点和一251MT位点的基因多态性与矽肺易感性有关,携带IL-8(Met31Arg)GT基因型的接尘工人患矽肺的危险性增加;携带IL-8(-251)从基因型的接尘工人患矽肺的危险性降低.未发现IL-8(781C/T和RA+860)位点的基因多态性与矽肺易感性有关.

Abstract：

Objective To explore the relationship between the polymorphisms of interleukin-8(IL-8)and the silicosis susceptibility. Methods The case group consisted of 101 male patients with stage I silicosis diagnosed by the Pneumoconiosis Diagnosis Expert Panel according to the Chinese National Diagnosis Criteria of Pneumoconiosis (GBZ 70-2009). The control group consisted of 121 workers without silicosis exposed to same dusts. The cases and the controls had the same dust exposure history. The peripheral venous blood was drawn from each subject. DNA was extracted from leucocytes by the salting method. The polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) techniques and PCR were used to examine polymorphism of IL-8(Met31Arg, 781C/T,-251A/T and RA+860). Results There were no the differences of age, cumulative exposure time and smoking between the cases and the controls (P＞0.05). The frequencies of IL-8 (Met31Arg) GT genotypes in cases and controls were 12.87% and 2.48%, respectively, there was significant difference (P＜0.05).The frequencies of allele G in cases and controls were 6.44% and 2.07%, respectively, there was significant difference (P＜0.05). The frequencies of IL-8 (-251A/T) AA genotypes in cases and controls were 9.90% and 25.64%, respectively, there was significant difference (P＜0.05). The frequencies of IL-8 (781C/T) CC, CT, TT genotypes in cases and controls were 38.61%,40.59%,20.79% and 46.28%,40.50%, 13.22%, respectively, there zwas no significant difference (P＞0.05). The frequencies of IL-8 (RA+860) GG, GC and CC genotypes in cases and controls were 75.25%, 21.78%, 2.97%, 80.17%, 14.88%, 4.96%, respectively, there was no significant difference (P＞0.05). Conclusions IL-8 (Met31 Arg and -251A/T) genetic polymorphisms might play a role in the development of silicosis. The risk of pneumoconiosis in workers carrying (Met31 Arg) genotype GT is likely to increase.The risk of pneumoconiosis in workers carrying IL-8 (-251A/T) AA genotype is likely to decrease. The relationship between IL-8 781C/T and RA+860 genes polymorphisms and silicosis is not found.     

白细胞介素-4基因多态性与矽肺易感性的病例对照研究

目的 探讨白细胞介素-4(IL-4)(-33、+45、VNTR、+429、+448)位点基因多态性与矽肺易感性的关系.方法 采用整群病例对照研究,病例组为101名Ⅰ期矽肺患者,对照组为与病例年龄相近、同性别、同民族、同一工作地点、累积接尘工龄相近的非矽肺接尘工人121名.采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)法检测IL-4的5个基因位点的基因型并进行分析.结果 两组对象的年龄、累积接尘工龄、吸烟率比较,差异均无统计学意义(P＞0.05).IL-4(+429)位点仅存在GA 基因型,未发现GG和AA基因型;IL-4(+448)位点仅存在CC基因型,未发现CG和GG基因型.病例组IL-4(+45)位点AA、GG和AG基因型频率分别为55.4%、10.9%和33.7%,与对照组(62.0%、11.6%、26.4%)比较,差异无统计学意义(x2=1.386,P＞0.05);病例组IL-4(VNTR)位点B1B1、B282和B182基因型频率分别为73.3%、1.0%和25.7%,与对照组(68.6%、1.7%、29.8%)比较,差异无统计学意义(x2=0.580,P＞0.05);病例组IL-4(-33)位点TY、CC和CT基因型频率分别为55.4%、11.9%和32.7%,与对照组(69.4%、4.1%、26.4%)比较,差异有统计学意义(x2=6.751,P＜0.05).结论 未发现IL-4(+45、VNTR)与矽肺患病的关系,未发现IL-4(+448、+429)存在多态性现象.IL-4(-33)位点多态性与矽肺患病有关,携带IL-4-33等位基因C的接尘者患矽肺的危险性增加.

Abstract：

Objective To explore the relationship between polymorphisms of interleukin-4 (IL-4)gene (-33,+45,VNTR,+429,+448) and the susceptibility of silicosis. Methods In a case-control study, the case group consisted of 101 patients with silicosis, and was matched with the control group (121 workers without silicosis), according to the age, sex, nationality, working place, exposure to dust. The polymorphisms of IL-4(five locus) detected by the method of polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) techniques. Results There was no difference of age, exposure and smoking between case group and control group (P＞0.05). The two groups had good comparability. Only the GA genotype in the IL-4 (+429)locus was found, the genotypes of AA and GG were not found. The CC genotype in the IL-4 (+448) locus was found, the genotypes of CG and GG were not found. The frequencies of AA, GG and AG of IL-4 (+45) locus in the case and control groups were 55.4%, 10.9%, 33.7% and 62.0%, 11.6%, 26.4%, respectively, there was no the significant difference between case and control groups (P＞0.05). The frequencies of B1B1, B2B2 and B1B2of IL-4 (VNTR) locus in the case and control groups were 73.3%, 1.0%, 25.7% and 68.6%, 1.7%, 29.8%,respectively, there was no the significant difference between case and control groups (P＞0.05). The frequencies of TT, CC and CT in IL-4 -33 locus in the case group were 55.4%, 11.9% and 32.7%, which were significantly higher than those (69.4%, 4.1%, 26.4%) in control group (P＜0.05). Conclusions There was no relationship between IL-4 (+45,VNTR) genotypes and prevalence of silicosis in this study. The polymorphisms of IL-4(+448)site were not found which may be related to the race. The relationship between genetic polymorphism of IL-4(-33) locus and silicosis development was found, Workers with IL-4(-33) allele C are susceptible to the silica.     

白细胞介素-8基因多态性与尘肺易感性研究

目的分析白细胞介素-8基因多态性与尘肺易感性的关系,探讨粉尘接触人群易感生物标志物。方法采用整群病例对照研究方法,以2568名接触煤矿粉尘和1265名接触矽尘工人为调查对象,均拍摄后前位胸大片,由专家组按照GBZ70—2009尘肺病诊断标准盲法诊断,以确诊的壹期男性尘肺患者为病例组,共213例,其中矽肺101例,煤工尘肺112例。从受检的接尘工人中选择与病例发病年龄相似、同一工作场所无尘肺的汉族男性接尘工人251名为对照组。采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)和PCR方法检测白细胞介素-8(IL-8)4个位点基因型。结果病例组和对照组平均年龄分别为(54.9±9.4)岁和(54.8±6.3)岁,累积接尘工龄分别为(29.3±6.1)a和(29.5±4.9)a。两组年龄、累积接尘工龄比较,差异均无统计学意义(P>0.05);IL-8Met31Arg位点GG、GT和TT基因型频率病例组分别为0%、14.1%和85.9%,对照组分别为0.4%、3.6%和96.0%,差异有统计学意义(χ2=17.25,P<0.05);-251A/T位点AA、AT和TT基因型频率病例组分别为39.0%、48.8%和12.2%,对照组分别为17.9%、17.9%和64.2%,差异有统计学意义(χ2=19.19,P<0.05);病例组781C/T位点TT基因型频率(21.6%)高于对照组(13.9%),差异有统计学意义(χ2=4.68,P<0.05);病例组和对照组RA+860位点基因型分布比较,差异无统计学意义(P>0.05)。结论携带IL-8Met31Arg位点GT基因型和781C/T位点TT基因型的接尘工人患尘肺的危险性增加,而携带IL-8-251A/T位点TT基因型接尘工人患尘肺危险性降低;未证实RA+860位点的基因多态性与尘肺易感性有关。     

白细胞介素-1家族基因多态性与强直性脊柱炎遗传易感性的研究进展

强直性脊柱炎（AS）是一种主要侵犯中轴骨骼,并可累及外周关节、肌腱韧带附着点及其他组织的慢性炎性自身免疫性疾病,该病多发生于青壮年,以20～30岁为发病高峰年龄。AS属于多基因复杂性疾病,其病因及发病机制目前尚不明确,但大量证据已证实遗传因素与该病的关系尤为密切,众多研究已证实该病的发病与以人类白细胞抗原（HLA）B27基因为代表的HLA区基因密切相关,自1973年Brewerton和Schlosstein分别证实HLA—B27阳性与AS有强相关性,     

白细胞介素-6基因多态性与尘肺的相关性

目的 研究白细胞介素-6（IL-6）（-634C/G）基因多态性与尘肺的关系.方法 选择确诊的104例Ⅰ期男性矽肺患者66例（矽肺组）、煤工尘肺患者38例（煤工尘肺组）为研究对象,以接触同性质粉尘、非尘肺的122名男性接触矽尘工人77例（矽尘组）、接触煤尘工人45例（煤尘组）为对照;采集外周静脉血,应用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）技术检测IL-6（-634C/G）基因多态性.结果 IL-6（-634C/G）基因型（CC、CG、GG）在矽肺组、矽尘组、煤工尘肺组和煤尘组分布频率分别为66.7%、19.7%、13.6%,42.9%、42.9%、14.2%,73.7%、18.4%、7.9%和51.1%、35.6%、13.3%.成组分析和1：1配对分析中均发现IL-6（-634C/G）基因型分布频率在矽肺组和矽尘组间差异有统计学意义（P＜0.05）.结论 IL-6（-634 C/G）基因多态性与矽肺发病相关.     

白细胞介素1和白细胞介素17基因多态性与胃癌易感性的相关研究

目的 研究IL-1和IL-17基因多态性与胃癌的相关性.方法 以病例-对照的方法收集宁波市医疗中心李惠利医院150例胃癌患者(疾病组)及150例对照组;采用SNaPshot PCR对疾病组和对照组的IL-1RN rs9005与IL-17A rs2275913基因多态性进行检测,分析基因多态性与胃癌发生之间的相关性.结果...     

白细胞介素-1、白细胞介素-4、白细胞介素-6基因多态性与热性惊厥的研究进展

正热性惊厥是小儿时期最常见的惊厥性疾病,全球有2%～5%的儿童至少经历过一次热性惊厥[1]。通常认为热性惊厥是良性的自限性过程,反复发作的热性惊厥和热性惊厥持续状态可导致一过性或长期损害,影响神经系统的发育,造成一定程度的脑损伤和不可预知的后果。研究[2]表明,2%～10%的热性惊厥患     

REG1a基因单核苷酸多态性与胃癌遗传易感性研究

目的寻找中国汉族人群REG1a基因单核苷酸多态性位点,探讨其基因多态性与胃癌(Gastric Cancer)的关系。方法应用PCR产物测序的方法在中国人群中检测散发性胃癌组(n=183)及对照组(n=204)REG1a基因的单核苷酸多态性(single nucleotide polymorphisms,SNPs)。结果REG1a基因第929位(T/C)、第1790位(C/G)、第2751位(A/T)发现3个新的SNP位点,其中第929位和第1790位2个位点基因型在胃癌与健康人群的差异具有统计学意义(P<0.05)。结论对特定人群进行测序可有效筛查出候选SNP位点,初步发现REG1a基因的2处单核苷酸多态性与胃癌的发生、淋巴转移和远处转移有一定关系,为后续利用单核苷酸多态性标志进行胃癌风险预测奠定了研究基础。     

白细胞介素10基因多态性与子宫内膜异位症易感性的关系研究

目的 分析子宫内膜异位症(endometriosis,EMs)患者白细胞介素10(interleukin-10,IL-10)的启动子区域转录起始位点上游第1082位点G→A、819位点C→T及592位点C→A多态性,探讨其与EMs易感性之间的关系.方法 应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)检测EMs组214例和正常对照组160名健康人的启动子区域转录起始位点上游的第1082位点G→A、819位点C→T及592位点C→A碱基转换,采用SPSS11.0软件包统计分析各位点的基因型分布和等位基因频率.结果 IL-10-1082位点的多态性在EMs组(AA:87.90%;GA:12.10%)与对照组(AA:87.50%;GA:12.50%)的基因频率差异无统计学意义(x2=0.01,P=0.919).EMs组和对照组的IL-10-819 TT、CT、CC型基因频率均依次等同于IL-10-592的AA、CA、CC基因型.IL-10-819和-592基因型在EMs组分布(TT或AA:41.12%;CT或CA:47.66%;CC:11.21%)与对照组(TT或AA:53.75%;CT或CA:37.50%、CC:8.75%)差异无统计学意义(x2=5.87,P=0.053).但患者组IL-10-819的CT及-592的CA基因型频率较对照组增高,差异有统计学意义(校正后OR=1.88,95%CI=1.10～3.21,x2=5.24,P=0.021),-819和-592位点的C等位基因与EMs发病风险具有显著相关性(OR=1.42,95%CI=1.04～1.95,x2=4.81,P=0.028).EMs组IL-10-819(-592)位点的CC(CC)、CT(CA)基因型患者的血清中IL-10水平较TT(AA)基因型高[CA/CT:(50.12±82.40)pg/ml,CC(91.00±118.23)pg/ml,TT/AA(21.45±22.10)pg/ml],差异有统计学意义(F=2.492,P=0.048;F=1.852,P=0.008).结论 IL-10-592C及-819C等位基因与IL-10高表达相关,并与EMs的易感性具相关性,也与EMs的发病风险相关.     

人类白细胞抗原DRA基因多态性与肝细胞癌遗传易感性的关联研究

目的探讨人类白细胞抗原DRA基因(human leukocyte antigen DRA,HLA-DRA)单核苷酸多态性(single nucleotide polymorphism,SNP)与肝细胞癌(Hepatocellular carcinoma,HCC)易感性的关联。方法采用以医院为来源的非匹配病例对照研究方法,纳入365例HCC患者作为病例组以及365例非HCC患者作为对照组。利用问卷收集研究对象的一般人口学特征和相关暴露因素资料,并采用TaqMan-MGB探针定量PCR法对rs3135395 G>T、rs3135338 T>C和rs2395178 G>C进行基因型检测。应用非条件logistic回归模型计算SNP位点各基因型与HCC易感性的比值比(odds ratio,OR)及95%可信区间(confidence interval,CI)。结果携带rs3135338 TC基因型和显性模型(TC+CC)的个体HCC易感性较TT基因型携带者显著降低(OR=0.47,95%CI=0.25～0.91,P=0.024;OR=0.53,95%CI=0.28～0.95,...     

白细胞介素10基因多态性与子宫内膜异位症易感性的关系研究

Objective To explore the relationship of the endometriosis susceptibility and polymorphism of up stream of IL-10 promoter at the site of 1082( G→A), 819(C→T) and 592(C→A).Methods A total of 214 patients with endometriosis and 160 healthy individuals were enrolled and divided into patient group and control group in this study.The polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) was applied to detect the base transition in the up stream of IL-10 promoter at the site of 1082 ( G→A), 819 (C→T) and 592 ( C→A ).SPSS11.0 software was applied to analysis frequencies of all genotypes.Results There was no difference in polymorphism of IL-10-1082 between the endometriosis ( AA :87.90%, GA: 12.10% ) and control group( AA: 87.50%, GA: 12.50% ).The rate of TT, CT and CC genotype IL-10-819 was the same as the AA, CA and CC individually.There was no difference in the polymorphism of IL-10-819 or IL-10-592 between the endometriosis group( TT or AA:41.12%, CT or CA:47.66%, CC:11.21%) and control group(χ2 =5.87,P=0.053).However, there were significant difference in the genotype of CT of IL-10-819 or CA of IL-10-592 between the endometriosis group and control group(after adjust OR = 1.88, 95% CI = 1.10 - 3.21, χ2 = 5.24, P = 0.021 ), and the allele C of IL-10-819 or IL-10-592 were close related with occurrence of endometriosis (OR= 1.42,95% CI = 1.04 - 1.95, χ2 = 4.81, P = 0.028 ).The IL-10 level in the plasma of endometriosis group with genotype of CC (CC), CT (CA) of IL-10-819(-592) were significant higher than those with TT (AA)(CA/CT:(50.12±82.40) pg/ml, CC: (91.00 ± 118.23) pg/ml, TT/AA: (21.45 ±22.10) pg/ml)(F=2.492,P=0.048;F=1.852,P=0.008).Conclusion The allele C of IL-10-819 or IL-10-592 was close related to the high level expression of IL-10, and it is the risk of the occurrence of endometriosis.     

白细胞介素10基因多态性与子宫内膜异位症易感性的关系研究

Objective To explore the relationship of the endometriosis susceptibility and polymorphism of up stream of IL-10 promoter at the site of 1082( G→A), 819(C→T) and 592(C→A).Methods A total of 214 patients with endometriosis and 160 healthy individuals were enrolled and divided into patient group and control group in this study.The polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) was applied to detect the base transition in the up stream of IL-10 promoter at the site of 1082 ( G→A), 819 (C→T) and 592 ( C→A ).SPSS11.0 software was applied to analysis frequencies of all genotypes.Results There was no difference in polymorphism of IL-10-1082 between the endometriosis ( AA :87.90%, GA: 12.10% ) and control group( AA: 87.50%, GA: 12.50% ).The rate of TT, CT and CC genotype IL-10-819 was the same as the AA, CA and CC individually.There was no difference in the polymorphism of IL-10-819 or IL-10-592 between the endometriosis group( TT or AA:41.12%, CT or CA:47.66%, CC:11.21%) and control group(χ2 =5.87,P=0.053).However, there were significant difference in the genotype of CT of IL-10-819 or CA of IL-10-592 between the endometriosis group and control group(after adjust OR = 1.88, 95% CI = 1.10 - 3.21, χ2 = 5.24, P = 0.021 ), and the allele C of IL-10-819 or IL-10-592 were close related with occurrence of endometriosis (OR= 1.42,95% CI = 1.04 - 1.95, χ2 = 4.81, P = 0.028 ).The IL-10 level in the plasma of endometriosis group with genotype of CC (CC), CT (CA) of IL-10-819(-592) were significant higher than those with TT (AA)(CA/CT:(50.12±82.40) pg/ml, CC: (91.00 ± 118.23) pg/ml, TT/AA: (21.45 ±22.10) pg/ml)(F=2.492,P=0.048;F=1.852,P=0.008).Conclusion The allele C of IL-10-819 or IL-10-592 was close related to the high level expression of IL-10, and it is the risk of the occurrence of endometriosis.     

DNA修复基因XRRC1单核苷酸多态性与肿瘤易感性

DNA修复基因单核苷酸多态性是决定机体肿瘤易感性的一个重要因素。当前，DNA修复基因XRCC1单核苷酸多态性与肿瘤易感性的关系的研究结果之间存在分歧，尚无法明确XRCC1单核苷酸多态性与个体肿瘤易感性的关系。单核苷酸多态性与肿瘤易感性关系的研究只有充分考虑遗传、环境、种族等诸多影响因素，才能建立起与某一特定肿瘤易感性之间较为明确的关联，为肿瘤的预防和治疗提供依据。     

DNA修复基因XRCC1单核苷酸多态性与肿瘤易感性

DNA修复基因单核苷酸多态性是决定机体肿瘤易感性的一个重要因素.当前,DNA修复基因XRCC1单核苷酸多态性与肿瘤易感性的关系的研究结果之间存在分歧,尚无法明确XRCC1单核苷酸多态性与个体肿瘤易感性的关系.单核苷酸多态性与肿瘤易感性关系的研究只有充分考虑遗传、环境、种族等诸多影响因素,才能建立起与某一特定肿瘤易感性之间较为明确的关联,为肿瘤的预防和治疗提供依据.     

XRCC1基因单核苷酸多态性与铅毒性遗传易感性的关系

目的研究DNA修复基因XRCC1单核苷酸多态性与铅毒性易感性的关系。方法采集326名某蓄电池企业铅作业工人外周静脉血样品,检测血铅和血锌原卟啉(ZPP),采用聚合酶链式反应-限制性片段长度多态(PCR-RFLP)检测XRCC1基因型,分析不同基因型铅作业工人与铅毒性易感性的关系。结果 326名铅作业工人XRCC1基因分布呈现多态现象,各基因型的分布频率符合遗传学的Hardy-Weinberg平衡(P>0.05);不同基因型组(XRCC1-194CC/CT+TT、XRCC1-280 GG/GA+AA、XRCC1-399GG/GA+AA)工人ZPP差异无统计学意义(P>0.05);XRCC1-194CT+TT基因型组工人平均血铅值高于XRCC1-241CC基因型组(P<0.05),而XRCC1-280GG/GA+AA、XRCC1-399GG/GA+AA基因型组工人平均血铅值差异无统计学意义(P>0.05);以血铅水平1.90μmol/L为界,经χ2检验、logistic回归分析显示,高铅组XRCC1-194CT+TT基因型的比例大于低铅组(P<0.05),XRCC1-194CT+TT基因型组工人较XRCC1-194CC基因型组工人高血铅发生率的风险明显增高(OR=2.78,95%CI=1.49～5.28)。结论XRCC1 Arg194Trp基因单核苷酸多态性与血铅升高有一定关联性,C→T多态性提高了接铅工人对铅毒性易感的风险性,XRCC1-194CT/TT基因型可能是铅毒性易感基因型;XRCC1 Arg280His和XRCC1 Arg399Gln多态性可能与铅毒性易感性无关。     

白细胞介素-23受体基因多态性对强直性脊柱炎易感性的影响

目的探讨白细胞介素-23受体（IL-23R）基因中rs11209032、rs11209026和rs11465804位点单核苷酸多态性（SNP）对强直性脊柱炎（AS）易感性的影响。方法选取福建汉族人群AS患者157例及健康对照150例．进行外周血基因组DNA抽提,用TaqMan—MGB探针对rs11209032、rs11209026、rs11465804三个位点进行PCR分型。应用统计分析方法x^2检验．比较病例组和对照组的等位基因频率、等位基因型频率及其患病风险。结果在福建汉族人群中,rs11209026、rs11465804未存在基因多态性,而rs11209032位点的各基因型频率在AS中分别为18．5％（A／A）、59．9％（A／G）、21．6％（G／G）．在对照组中分别为22．0％（儿／A）、59．3％（A／G）、18．7％（G／G）;两组A和G等位基因频率无统计学差异（x^2=0．652,P〉0．05）。结论福建籍汉族人群AS易感性与IL-23R基因rs11209032、rs11209026、rs11465804位点单核苷酸多态性无关。     

蛋白激酶C-α基因rs228883多态性与哮喘易感性的关系

目的通过对华东地区哮喘患者和正常人群中蛋白激酶C-α(PRKCA)基因rs228883多态性分布检测,探讨rs228883位点与哮喘易感性的关系。方法对221例哮喘患者和197名的正常对照者,利用Sequenom Iplex系统检测PRKCArs228883位点的多态性后进行统计学分析。结果哮喘与正常组rs228883各基因型的分布差异有统计学意义(P<0.05);在遗传模型上,rs228883更符合超显性模型(P=0.025);与CC+TT相比,rs228883的CT杂合基因型增加了哮喘的发病风险(OR=1.60,95%CI:1.06～2.41,P=0.025)。结论 PRKCA基因多态性位点rs228883可能与哮喘发病相关,杂合基因型CT增加了哮喘发病的危险。     

白细胞介素-10基因多态性与肺结核易感性的关系研究

[目的]探讨白细胞介素-10(IL-10)基因启动子区基因多态性与中国汉族人肺结核发病的关系. [方法]采用病例对照研究设计,选择135例健康对照和141例肺结核患者为研究对象,对肺结核发病影响因素进行问卷调查,应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)分析方法,对全部研究对象的IL-10基因启动子区-1082、-819位点单核苷酸多态性(SNP)进行基因分型,对各危险因素进行单因素分析和多因素非条件Logistic回归分析.[结果]接触史、卡痕、家族史与肺结核的发生有关.IL-10-1082位点各基因型在病例组和对照组中的分布频率未见差别(X2=0.906,P=0.636).IL-10-819位点野生型(CC)、突变型杂合子(CT)、突变型纯合子(TT)3种基因型在病例组和对照组中的分布频率不同(X2=14.376,P=0.001).在多因素分析中调整接触史、卡痕和家族史后,IL-10-819突变型纯合子(TT)与肺结核发病密切相关,差异有统计学意义,以野生基因型CC为参照,调整后突变型纯合子TT(OR=0.312,95%CI为0.167～0.582),为肺结核发病的保护因素. [结论]IL-10-819位点TT基因型可能与肺结核发病相关.