IL-10 polymorphism is associated with increased incidence of severe sepsis

Objective To investigate whether three biallelic polymorphisms at positions -592, -819 and -1082 in the promoter region of the IL-10 gene are associated with increased incidence of severe sepsis.Methods The IL-10 -592, -819 and -1082 polymorphisms were typed using polymerase chain reaction followed by digestion with the restriction enzymes RsaⅠ, MaeⅢ and MnlⅠ, respectively. Results Patients with severe sepsis were more likely to have IL-10 -1082 allele 1, compared with controls (P<0.05). Genotype distribution of the IL-10 -1082 polymorphism significantly differed between patients and controls (P<0.05). However, the allele frequencies and genotype distribution of the IL-10 -1082 polymorphism did not differ between surviving and dead patients (P>0.05). No significant differences in the genotype distribution and allele frequencies of the IL-10 -592 and IL-10 -819 polymorphisms were observed between patients with severe sepsis and heathy controls, nor between surviving and dead patients (P> 0.05). Conclusions The polymorphism at position -1082 in the promoter region of the IL-10 gene may be associated with susceptibility to severe sepsis. In constrast, the other two highly linked IL-10 polymorphisms are not associated with incidence or the outcome of severe sepsis.     

Surfactant protein a polymorphism is associated with susceptibility to chronic obstructive pulmonary disease in Chinese Uighur population

This study investigatedexamined the correlation between surfactant protein-A (SP-A) polymorphism and the susceptibility of cvhronic obstructive pulmonary disease (COPD) in Xinjiang Uighurs. Genomic DNA was extracted from peripheral blood of 194 COPD smokers and 201 healthy smokers of Uighur who were hospitalized in or paid a visit to one of the four Xingjiang-based hospi-tals involved in the study, betweenfrom March 2009 to December 2010. Single nucleotide polymor-phisms (SNPs) were studied on A/G atwithin amino acid aa62 (CCA/CCG rs1136451) and C/T within aa219 (CGG/TGG, rs4253527) in SP-A. Genotypes were determined by using the TaqMan polymerase chain reaction (PCR). Our results showed that genotype frequencies were different be-tween the COPD and normal smokers infor aa62 (χx2=6.852, P=0.033). There were also significant differences in allele genotype frequencies between the COPD and the control and allele G might de-crease the risk COPD (χx2=6.545, P=0.011; OR=0.663; 95% CI: 0.484-0.909). The result suggested We were led to conclude that polymorphism of aa62 (CCA/CCG, rs1136451) of SP-A may be asso-ciated with the susceptibility to COPD in Xingjiang Uighurs.     

Association between the interleukin-13 gene and development of chronic obstructive pulmonary disease in southern Chinese Han population: a case-control study

Background Interleukin-13 （IL-13） has been implicated to be responsible for recruitment of inflammatory cells from the blood to the lung,regulation of matrix metalloproteinase and induction of mucin production and secretion in chronic obstructive pulmonary disease （COPD）.We determined plasma IL-13 levels in patients with COPD and investigated its association with common polymorphisms of IL-13 gene in a case-control study.Methods We genotyped 160 cases and 175 control subjects in a local hospital using Mass-ArrayTM Technology Platform then tested the association of four SNPs in IL-13 （rs1295685,rs1800925,rs1881457,rs20541） with COPD,and then determined plasma IL-13 levels in patients with COPD and controls.Results Association was found between IL-13 gene SNPs （rs20541 and rs1800925） and an increased risk of COPD.By linkage disequilibrium （LD） analysis,two blocks （rs1881457 and rs1800925; rs20541 and rs1295685） were found.The risk of COPD was found associated with the IL-13 gene polymorphism among southern Chinese Han population.Plasma IL-13 level was increased in COPD patients compared with controls.Conclusions The polymorphism of the IL-13 gene is associated with an increased risk of COPD in southern Chinese Han population.Plasma IL-13 levels were found elevated in patients with COPD.     

Osteopontin gene polymorphism in association with systemic lupus erythematosus in Chinese patients

Background Osteopontin (OPN) is one kind of cytokine which can play a number of roles in promoting activation of T lymphocyte, regulating balance between Th1 and Th2, participating in cell-induced immunologic response and stimulating B lymphocyte to express multi-clone antibodies. Some researches have showed that OPN may be involved in the pathogenesis of systemic lupus erythematosus (SLE). The aim of this study was to investigate possible association of a single nucleotide polymorphism（SNP）at position 9250 in exon 7 of the OPN gene (OPN gene 9250) with SLE in Chinese patients.Methods Totally 158 patients (18 males and 140 females) fulfilled the revised criteria for SLE by the American College of Rheumatology in 1982 and 180 healthy volunteer controls (34 males and 146 females), all from the south of China, consented to participate in the study. OPN gene 9250 polymorphism was detected by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP).Results The frequency of TT genotype of the OPN gene 9250 was significantly lower (52.5% vs 70%, P<0.05) and the frequency of TC genotype of the OPN gene 9250 was significantly higher (43.7% vs 29.4%, P<0.05) in SLE patients than in controls. There were significant differences in OPN gene 9250 allele and phenotype frequencies between the SLE patients and controls (P<0.05). When the SLE patients and controls were separated into men and women, significant differences of frequencies were noted in TT genotype, TC genotype and allele of the OPN gene 9250 in women (P<0.05) but not in men (P>0.05). Conclusions OPN gene 9250 polymorphism appears to be associated with susceptibility to SLE in Chinese Han ethnic population.     

Relationship between polymorphisms of genes encoding microsomal epoxide hydrolase and glutathione S-transferase P1 and chronic obstructive pulmonary disease

Background Cigarette smoking is the major risk factor for chronic obstructive pulmonary disease (COPD). However, only 10% -20% of chronic heavy cigarette smokers develop symptomatic disease. COPD is most likely the result of complex interactions between environmental and genetic factors. Genetic susceptibility to COPD might depend on the variations in enzyme activities that detoxify cigarette smoke products, such as microsomal epoxide hydrolase (mEH) and glutathione Stransferase (GST). In this study, we investigated the relationship between polymorphisms in the genes encoding mEH and glutathione S-transferase P1 (GSTP1) and COPD in a Chinese population.Methods Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was performed to find mEH polymorphism in exon 3 (Tyr113→His), exon 4 (His139→Arg) and GSTP1 polymorphism in exon 5 (Ile105→Val) in 100 COPD patients and 100 age- and sex-matched healthy controls.Results The proportion of mEH exon 3 heterozygotes was significantly higher in patients with COPD than that in the control subjects (42% vs 32% ). The odds ratio (OR) adjusted by age, sex, body mass index (BMI) and cigarette years was 2.96 (95% CI 1.24 - 7. 09). There was no marked difference in very slow activity genotype versus other genotypes between COPD patients and the controls. When COPD patients were non-smokers, the OR of very slow activity genotype versus other genotypes was more than 1.00; and when COPD patients were smokers ( current smokers and exsmokers), the OR was less than 1.00. There was no significant difference in GSTP1 polymorphism adjusted by age, sex, BMI and smoking between COPD patients and the controls.Conclusions mEH exon 3 heterozygotes might be associated with susceptibility to COPD in China.The interaction might exist between mEH genotype and smoke. The gene polymorphism for GSTP1 might not be associated with susceptibility to COPD in the Chinese population.     

Association of TNF-α-238G/A and 308 G/A Gene Polymorphisms with Pulmonary Tuberculosis among Patients with Coal Worker＇s Pneumoconiosis

Objectives Tumor necrosis factor-α （TNF-α） may play an important role in host＇s immune response to mycobacterium tuberculosis （M. tuberculosis） infection. This study was to investigate the association of TNF-α gene polymorphism with pulmonary tuberculosis （TB） among patients with coal worker＇s pneumoconiosis （CWP）. Methods A case-control study was conducted in 113 patients with confirmed CWP complicated with pulmonary TB and 113 non-TB controls with CWP. They were matched in gender, age, job, and stage of pneumoconiosis. All participants were interviewed with questionnaires and their blood specimens were collected for genetic determination with informed consent. The TNF-α gene polymorphism was determined with polymerase chain reaction of restriction fragment length polymorphism （PCR-RFLP）. Frequency of genotypes was assessed for Hardy-Weinberg equilibrium by chi-square test or Fisher＇s exact probability. Factors influencing the association of individual susceptibility with pulmonary TB were evaluated with logistic regression analysis. Gene-environment interaction was evaluated by a multiplieative model with combined OR. All data were analyzed using SAS version 8.2 software. Results No significant difference in frequency of the TNF-α-308 genotype was found between CWP complicated with pulmonary TB and non-TB controls （2,2=5.44, P=-0.07）. But difference in frequency of the TNF-α-308 A allele was identified between them （2,2-5.14, P=0.02）. No significant difference in frequencies of the TNF-α-238 genotype and allele （P=0.23 and P=0.09, respectively） was found between cases and controls either, with combined （GG and AA） OR of 3.96 （95% confidence interval of 1.30-12.09） at the -308 locus of the TNF-α gene, as compared to combination of the TNF-α-238 GG and TNF-α-308 GG genotypes. Multivariate-adjusted odds ratio of the TNF-α-238 GG and TNF-α-308 GA genotypes was 1.98 （95% CI of 1.06-3.71） for risk for pulmonary TB in patients with CWP. There was a synergic interaction between the TNF-a-308 GG genotype and body mass index （OR=4.92）, as well as an interaction between the TNF-α-308 GG genotype and history of BCG immunization or history of TB exposure. And, the interaction of the TNF-α-238 GG genotype and history of BCG immunization or TB exposure with risk for pulmonary TB in them was also indicated. Conclusions TNF-α-308 A allele is associated with an elevated risk for pulmonary TB, whereas TNF-α-238 A allele was otherwise.     

The Association between Polymorphism of TNF-α Gene and Hypertensive Disorder Complicating Pregnancy

To study whether the development of hypertensive disorder complicating pregnancy is associated with -308G→A, -850C→T mutation at promoter of TNF-α gene, the -308G→A, -850C→T polymorphism was examined in patients and healthy pregnant women by PCR-RFLP technique. The frequencies of genotype and allele were compared between the two groups. The re- sults showed that with -308G→A polymorphism distribution, the allele frequency of TNF2 and the frequency of the genotype TNF2/1 in the patient group was significantly higher in the patient group than in control group (P<0.05). A significant difference in genotype distribution of -850C→T poly- morphism was observed between the two groups. The allele frequencies of T in patient group was higher in the control group as compared with the patient group. The frequencies of CT and TT genotypes were lower in the patient group. It is concluded that the TNF2 allele of -308 is associated with the occurrence of hypertensive disorder complicating pregnancy, while T allele of -850 may be the protective factor against the development of the disease. TNF2/1 CC may be susceptibility genotype of hypertensive disorder complicating pregnancy.     

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.     

Gene polymorphism in apolipoprotein E and presenilin-1 in patients with late -onset Alzheimer’s disease

Objective To evaluate the association of apolipoprotein E (apoE) and presenilin-1 (PS-1) gene polymorphism with late-onset Alzheimer’s disease (AD). Methods A case-control study was undertaken to detect the polymorphism of apoE and PS-1 by polymerase chain reaction and digestion with the endonucleases of BspL Ⅰ, Hha Ⅰ and BamH Ⅰ. Results The frequencies of apoE ε3/4 genotype and ε4 allele in late-onset AD (n=42) were significantly higher than those of age-matched controls (P&lt;0.05). The frequencies of the apoE intron 1 enhancer (IE1) G/G genotype and G allele in late-onset AD were also significantly higher than those in controls (P&lt;0.05). The frequencies of the PS-1 1/1 genotype but not the 1 allele in AD were significantly higher than those in controls (P&lt;0.05).The apoE ε4 allele was associated with a tripling of risk for late-onset AD compared with that with no ε4 allele (odds ratio: 2.932). Homozygosity of the G allele in IE1 and 1/1 genotype in PS-1 was associated with a doubling of risk for late-onset AD, and odds ratios were 2.223 and 2.066, respectively.When the apoE ε4 was controlled, the association between the IE1 G/G genotype AD was no longer statistically significant (P&gt;0.05). We sequenced the exon 4 of apoE in patients with late-onset AD, and found no other genetic polymorphism or mutation except for apoE ε4 and IE1 G alleles associated with AD. Conclusion apoE ε4 gene appears to be the strongest gene risk factor for late-onset AD and its apparent association between the IE1 G/G genotype and late-onset AD is a consequence of the association between the ε4 and IE1 G/G genotype.The PS-1/1 genotype is weakly associated with late-onset AD.     

MDR1 C3435T polymorphism in patients with breast cancer

BACKGROUND: The human multidrug-resistant gene (MDR1) encodes P-glycoprotein (Pgp), a membrane-bound efflux transporter conferring resistance to a number of natural cytotoxic drugs and potentially toxic xenobiotics. Single-nucleotide polymorphisms (SNPs) in MDR1 gene are associated with phenotypic variation in Pgp expression levels of tissue. SNPs may alter the physiological protective role of Pgp and, therefore, influence disease risk. METHODS: In our study we identified the MDR1 C3435T polymorphism in breast cancer patients (n = 57) and healthy subjects (n = 50). DNA was extracted from peripheral blood samples by standard phenol/chloroform extraction method. Polymerase chain reaction-restriction fragment length polymorphism was used for the detection of C3435T single nucleotide polymorphism. RESULTS: We obtained CC, CT and TT genotype frequencies in breast cancer patients as 12.3%, 57.9% and 29.8%, respectively. In the control group, frequencies of genotypes were found as 36% for CC, 46% for CT and 18% for TT. We observed difference in SNPs in MDR1 gene C3435T polymorphism between breast cancer patients and healthy controls (chi(2) = 8.66, df = 2, p = 0.013). The C allele frequency was found in 41.2% and the T allele frequency was found in 58.8%. C3435T MDR1 gene allele frequencies in breast cancer patients as compared to results in control group were as follows: [OR = 1.5 (95% CI: 1.09-1.96)]. In the patient group, T allele frequency was significantly higher than controls (p <0.01). Clinicopathological parameters of patients with breast cancer were compared for C3435T polymorphism. We did not find any significant difference between clinicopathological parameters and MDR1 phenotype of breast cancer patients. The progression-free survival rate in a subgroup analysis based on MDR1 genotypes with CC genotype was 71.4%, CT genotype was 75.7%, and TT genotype was 88.2%, respectively. This difference was not statistically significant (log rank p = 0.63). CONCLUSIONS: Results of the present study demonstrated a 1.5-fold increased risk for development of breast cancer in T allele carriers.     

白细胞介素-16启动子区基因多态性与江西汉族人群哮喘的关系

[[摘要] 目的 探讨IL-16启动子区-295T/C基因多态性与哮喘的关系。方法 采用等位基因特异性聚合酶链反应(AS-PCR)及测序方法,检测76例哮喘患者,73例正常人IL-16启动子区-295T/C基因型。结果 哮喘组人群IL-16 启动子区(-295T/C )TT,TC,CC基因频率分别为61.8%,32.9%,5.3% ;T,C等位基因频率分别为78.3%、21.7%。正常组人群IL-16启动子区(-295T/C )TT,TC,CC基因型频率分别为61.6%,35.6%,2.8%;T,C等位基因频率分别为79.5%,20.5%。两组比较差异无显著性（p>0.05）。结论 江西汉族正常人群IL-16启动子区-295T/C基因多态性分布频率与日本人群相似;IL-16启动子区-295T/C基因多态性与江西汉族人群哮喘无相关性。 [关键词] 白细胞介素-16 基因多态性 哮喘     

白细胞介素-27的基因多态性与大肠癌的遗传易感性之间的相关性研究

目的探讨白细胞介素-27(IL-27)基因单核苷酸多态性及其单倍型与大肠癌易感性之间的关系。方法以170例大肠癌患者和160例健康对照者为研究对象,应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)的方法对IL-27基因-964A/G、2905T/G单核苷酸多态性进行基因分型,同时用SHEsis软件分析IL-27基因的连锁不平衡及单倍型频率。结果 IL-27基因2905T/G多态性在大肠癌组和对照组的分布差异无统计学意义(P>0.05),而IL-27基因-964A/G多态性在两组人群中的分布差异有统计学意义(P<0.05),等位基因频率的相对风险分析发现,-964G等位基因携带者患大肠癌的风险是A等位基因的1.640倍(OR=1.640,95%CI:1.194～2.251)。联合基因型分析发现,IL-27基因-964A/G、2905T/G单核苷酸多态性存在着强烈的连锁不平衡(|D′|=0.937),-964G/2905G单倍型频率在大肠癌组中显著高于对照组(P<0.05)。-964G/2905G单倍型携带者显著增加了大肠癌的发病风险(OR=2.100,95%CI:1.176～3.749)。结论 IL-27基因-964A/G多态性和-964G/2905G单倍型与大肠癌的发病具有相关性,其中-964G等位基因可能是大肠癌的遗传易感基因。     

磷酸二酯酶4D基因多态性与动脉粥样硬化血栓形成性脑卒中的关系

目的采用病例对照研究探讨中国汉族人群磷酸二酯酶4D(phosphodiesterase 4D,PDE4D)基因与动脉粥样硬化血栓形成性脑卒中(atherothrombosis ischemic stroke,AIS)的关系。方法应用聚合酶链反应—限制性片段长度多态性方法,检测235例浙南地区汉族人群AIS患者和105例非脑卒中对照组PDE4D基因SNP83、32酶切多态性。结果 AIS患者PDE4D基因SNP83 C等位基因频率明显高于对照组,是AIS的危险因素(OR=1.718,95%CI:1.120～2.633;P=0.012);CC+CT基因型亦明显高于对照组,差异有统计学意义(P<0.05),(OR=1.875,95%CI=1.137～3.092);调整糖尿病、HDL-C等危险因素后,差异仍存在(OR=2.023,95%CI:1.207～3.391)。PDE4D基因SNP32位点在两组比较无统计学意义(P>0.05)。结论对于中国汉族人群,PDE4D基因SNP83是AIS的危险因素,而SNP32与AIS无关联。     

广西壮族和汉族人群白细胞介素-18基因单核苷酸多态性及单倍型分析

目的了解白细胞介素-18(IL-18)基因启动子-137G/C,-607C/A多态性及单倍型在广西地区壮族及汉族人群中的分布频率,比较其在不同种族间分布的差异。方法采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术和DNA测序法检测160名壮族人和150名汉族人的IL-18基因-137G/C,607C/A多态性,比较两组IL-18基因型、等位基因及单倍型的分布频率;并结合文献进行不同种族间的比较分析。结果在广西壮族及汉族人群中IL-18基因单核苷酸多态性及单倍型的分布频率差异均无显著性(P>0·05),但与欧洲人群比较,IL-18基因单核苷酸多态性及单倍型的分布频率均差异有显著性(P<0·05)。结论在广西地区壮族及汉族人群中存在IL-18基因多态性,其基因单核苷酸多态性及单倍型的分布频率差异均无显著性,但与其他种族人群比较差异有显著性,这种差异可能是导致一些疾病在不同种族间的发病率和临床表现存在显著不同的因素之一。     

IL-28 B基因多态性与新疆维吾尔族HCV易感性研究

目的：探讨白介素-28B( IL-28B)基因的多态性与新疆维吾尔族慢性丙型肝炎感染易感性的关联。方法选取180例新疆维吾尔族慢性丙肝患者作为HCV组,150例维族健康体检者作为健康对照组,通过PCR产物测序法检测两组受试者IL-28B rs8099917、rs12979860基因型和等位基因分布频率,对两组基因型和等位基因差异进行分析;同时在HCV组中,对不同IL-28B基因型人群的HCV-RNA载量、肝功能、血脂等进行分析。结果①rs8099917在HCV组和健康对照组中TT和TG/GG基因型频率差异有统计学意义(χ2=11．627,P=0．001,OR=1．363,95%CI：1．107~1．591);G等位基因率在两组间差异明显,HCV组中占10．6%,健康对照组0．17%(χ2=7．011, P =0．008, OR =0．658,95%CI：0．512~0．905);② rs12979860在两组间的基因型和等位基因频率差异无统计学意义;③rs12979860 TT型患者的HCV-RNA高于TG/GG型,差异有统计学意义( P=0．032);患者肝功血脂差异与IL-28B基因多态性中无关。结论新疆维吾尔族人群中HCV的易感性与IL-28B rs8099917基因多态性有关联,rs8099917中等位基因G是新疆维族HCV患者的易感基因。     

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.     

中国山东汉族人群TIM-3基因启动子区域两单核苷酸多态与支气管哮喘的相关性

目的：检测中国山东汉族人群T细胞免疫球蛋白域和粘蛋白域蛋白 3（T cell immunoglobulin domain and mucin domain protein 3, TIM 3）基因启动子区域的单核苷酸多态（single nucleotide polymorphism,SNP）位点T 882C以及T 574G的多态性,探讨TIM 3基因启动子区域的单核苷酸多态与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－限制性片断长度多态性（polymerase chain reaction and restriction fragment length polymorphism,PCR RFLP）法检测449例哮喘患者以及386例正常对照TIM 3基因启动子区域单核甘酸多态位点T 882C及T 574G的基因型,计算基因型频率及等位基因频率,进行χ2检验。结果：T 882C及T 574G在中国汉族人群中处于完全连锁不平衡状态,其基因型频率及等位基因频率一致;T 882C位点TT/TC/CC基因型频率以及T 574G位点TT/TG/GG基因型频率在病例组中为0/0.042?3/0.957?7,在对照组中为0/0.018?1/0.981?9;两位点的基因型、等位基因分布以及单倍体型分布在哮喘组与对照组之间均有统计学差异。结论：中国汉族人群TIM 3基因启动子区域单核苷酸多态T 882C、T 574G与支气管哮喘易感性相关。     

白细胞介素10基因单核苷酸多态性与哮喘遗传易感性的相关性研究

目的探讨白细胞介素10（IL-10）基因三个单核苷酸多态性位点（rs1800896、rs3024496和rs3024492）与哮喘遗传易感性的相关性。方法应用基质辅助激光解吸附电离飞行时间质谱（MALDI-TOF-MS）平台及MassARRAY-IPLEX技术,分别对广州地区汉族人群中275例正常对照组和302例哮喘患者组IL-10三个单核苷酸多态性位点（rs1800896、rs3024496和rs3024492）进行基因分型并分析两组间分布情况。用2检验统计分析病例组和对照组基因型和等位基因的频率;采用非条件Logistic回归分析,校正性别、年龄影响,计算比数比（OR）和95%可信区间（CI）,评价多态性位点与哮喘遗传易感性的相关性。结果①rs1800896位点在广州地区汉族人群中存在GG、GA、AA三种多态性,其总分布频率分别为2.12%、39.65%、58.23%,携带GA杂型者患哮喘的危险性高于AA基因型者。②rs3024492位点在广州地区汉族人群中只存在AA和AT两种基因型,其总分布频率分别为1.22%和98.78%,该位点的多态性与哮喘的易感性无关。③rs3024496位点在广州地区汉族人群中也只存在TT和CT两种基因型,其总分布频率分别为90.59%和9.41%,该位点的多态性与哮喘的易感性无关。结论在IL-10三个单核苷酸多态性位点中,rs1800896与哮喘的易感性显著相关,而rs3024492和rs3024496与哮喘的易感性不相关。