結(jié)核免疫應(yīng)答相關(guān)基因多態(tài)性與肺結(jié)核易感性的關(guān)聯(lián)研究
[Abstract]:Background: Tuberculosis (TB) is one of the early and most influential infectious diseases caused by Mycobacteriumtuberculosis (M.TB) infection. Up to now, tuberculosis is still the most fatal disease caused by a single pathogen, and it has shown the trend of resurgence in recent years. The number of tuberculosis infections in the country is over 500 million, and the number of TB patients is over 5 million. The number of patients in the year is about 1 million 300 thousand. According to the statistics of the WHO (World Health Organization, WHO) in 2010, the total number of TB patients in China ranks second in the world, and is one of the 22 TB countries in the world. The study shows that the tuberculosis is exposed to three points. One of the population will be infected, in the infected population, less than 10% of the infected people develop tuberculosis. Individuals have a genetic susceptibility to tuberculosis.
Tuberculosis is a typical disease of chronic intracellular infection. The natural and adaptive immune response of the body against Mycobacterium tuberculosis is mainly through the recognition of the pattern recognition receptors expressed on the surface of T lymphocytes and macrophages and dendritic cells and the identification of Mycobacterium tuberculosis to trigger natural immune response, and then activate the antigen presentation and disease. The cascade of signaling pathways related to the downstream process and the cascade of molecules that regulate genes, such as cytokines and chemokines, to clear or control the infection of pathogens. Genetic variation in genes involved in the immune response to tuberculosis may affect the individual's immune state or ability, and the immune state or ability of individuals. Differences may also increase the risk of individual tuberculosis, thereby affecting susceptibility to tuberculosis and the occurrence and development of the disease.
Objective: To explore the relationship between genetic polymorphisms and susceptibility to tuberculosis, we hypothesized that the single nucleotide polymorphisms (Single nucleotide polymorphism, SNP), which are important functional genes such as chemokines and pattern recognition receptors (SNP), are involved in the susceptibility to tuberculosis in the immune response of tuberculosis. And there may be gene gene interaction; the phenotype of the severity of tuberculosis is determined by the genetic variation of its important genes, and the difference in the severity of the disease among individuals may be closely related to the SNPs of the functional genes.
Methods: to verify the hypothesis, a case control study was used in this study. The SNPs selection strategy based on "sequence based" and "Atlas Based" was used in this study. The polymerase chain reaction restriction fragment length polymorphism (Polymerase chain reaction-restriction fragment lengthpolymorphism, PCR-RFLP) was used to amplify the resistance. The Amplification refractory mutationsystem (ARMS) PCR, MassARRAY, and SNPstream techniques include 20 representative genes, including cytokine and its receptors, chemokines, and pattern recognition receptors (Pattern recognitionreceptors, PRRs) involved in the immune response related genes of tuberculosis, including tumor damage. Death factor alpha (Tumor necrosis factor alpha, TNF- alpha), interferon gamma (Interferon gamma, IFN- gamma), interleukin 10 (Interleukin10, IL-10), IL-1 beta, IL-12 beta, IL-12 beta 1, dendritic cell specific intercellular adhesion -3- combined with non integrin (Dendritic cell-specific ICAM-3grabbing nonintergrin, DC-SIGN), mononuclear cell adsorption protein 1 (Monocyte chemotactic protein-1, MCP-1), regulating normal T cell expression and secretory factor. Ptor, VDR), the Toll like receptor (Toll like receptor, TLR) 2, TLR4, the liver X receptor (Liver X receptors), the macrophage receptor with the collagen structure, and the 115 locus of the interferon regulatory factor 5 gene. In this study, 923 cases of new pulmonary tuberculosis were confirmed by clinical or laboratory diagnosis in grade 3 first class hospitals. The normal population was from 1033 healthy people in the corresponding hospital at the same time. The control population was matched by the region (Town township) and the national and case. A variety of methods, such as internal control and blind retesting, were used for quality control. All experimental data and coded questionnaire data were checked repeatedly, checked with Microsoft excel and used SPSS17.0, SNPstats, Haploview and MDR soft. The data is arranged and analyzed.
Results: (1) association analysis of the polymorphism of cytokine and its receptor gene: the -857CT and -863AC loci located in the promoter region of the TNF- alpha gene were significantly related to the occurrence of tuberculosis. Compared with those with the CC genotype at the -857CT locus, the risk of pulmonary tuberculosis carrying TT genotypes decreased by 32% (OR=0.68,95%CI:0.53-0.86); and with -863A/C position. Compared with those with CC genotype, the risk of pulmonary tuberculosis with AA genotype increased by 142% (OR=2.42,95%CI:1.28-4.59), and the genotype was also associated with severe pulmonary tuberculosis (OR=3.59,95%CI:1.41-9.11). In addition, the serum TNF- alpha content in the serum carrying -863A/C loci A alleles was significantly lower than that of C alleles. Therefore, I have found that the level of TNF- alpha in serum with -863A/C locus A allele is significantly lower than that of the C allele. We believe that the polymorphism of -857CT and -863AC loci in the promoter region of TNF- alpha gene may be related to the genetic susceptibility to tuberculosis in Chinese Han population. (2) the association analysis of the chemokine gene polymorphism: the three SNP loci of the CCL1 gene and the rs2107538 loci of the RANTES gene are significantly related to the pulmonary tuberculosis, including R. Compared with those with the AA genotype at the s159291 locus, the risk of tuberculosis in GG genotype carriers decreased by 71% (OR=0.71,95%CI:0.56-0.92); compared with those with rs159294 and rs210837 loci with TT or GG genotypes, the risk of tuberculosis with AA genotype increased by 17% and 59% respectively (OR=1.17,95%CI:1.01-1.35; OR=1.59,95%CI:1.07-). 2.36). The rs2107538 locus of the RANTES gene was negatively correlated with the susceptibility to tuberculosis (OR=0.79,95%CI:0.66-0.94). The haplotype of the CCL1 gene was further constructed. The results showed that the AT haplotype carriers composed of rs159291 and rs159294 loci were significantly related to the susceptibility of the GT haplotype carriers (OR=1.16,95%CI:1.00-1.35). 3) association analysis of the receptor gene polymorphism: in the 53 SNPs loci, the rs729302 of the IRF5 gene, the rs17009726 of the MARCO gene, the rs7975232 loci of the rs6761637 and VDR genes are significantly related to the susceptibility to tuberculosis. The results of the dominant model study show that the rs729302 loci of the IRF5 gene are compared with the AA and genotype of the A allele, The CC genotype could reduce the population susceptibility to tuberculosis (OR=0.71,95%CI:0.54-0.93), and by further linkage disequilibrium (Linkage disequilibrium, LD) and haplotype analysis, the results showed that the CG haplotype (rs729302 and rs4728142) was significantly negatively correlated with the susceptibility to tuberculosis (OR=0.83,95%CI:0.72-0.96), while MARCO gene rs170. 09726 and rs6761637 loci carrying "G" or "C" allele carriers were positively correlated with the susceptibility to tuberculosis (OR=1.24,95%CI:1.02-1.52; OR=1.65,95%CI:1.32-2.05). Haplotype analysis found GC haplotypes containing the rs17009726 locus "G" alleles and TGCC haplotypes containing the rs6761637 point "C" allele (OR=1.62). 95%CI:1.31-2.00; OR=1.31,95%CI:1.06-1.60) was also positively correlated with the susceptibility to tuberculosis. At the same time, the rs797523 (Apa) locus of the VDR gene was associated with the pulmonary tuberculosis (OR=0.82,95%CI:0.69-0.98), and the A allele was associated with the high concentration of 25 hydroxyvitamin D (25-hydroxyvitamin D, 25-OHD) in the serum. The protective effect of loci on tuberculosis may be mainly through the positive regulation of vitamin D. (4) gene gene interaction analysis: through gene gene interaction analysis, it is found that the rs3091324 loci of rs2107538 and CCL1 of chemokine gene RANTES are interacted, and the two variables of the best model are based on MDR software. The risk of pulmonary tuberculosis in the relative risk layer was significantly increased by 0.4 times (OR=1.40,95%CI:1.17-1.67). At the same time, the rs7975232 of the VDR gene, the rs2077344 of the MARCO gene, the rs7656411 of the TLR2 gene, and the rs729302 loci of the IRF5 base were interacted upon, and then were divided into two categories. The risk of TB in the relative risk layer increased significantly by 1.36 times (OR=2.36,95%CI:1.95-2.84).
Conclusion: in this study, a large sample case control study was used to study the relationship between the polymorphism of the immune response gene and the susceptibility to tuberculosis in the Chinese population. The interaction of TNF- alpha, CCL1, RANTES, IRF5, MARCO and VDR gene polymorphisms or combined with other gene loci was found to be susceptible to the susceptibility to tuberculosis. The TNF- alpha and VDR polymorphic loci are closely related to the level of expression in the serum. The results of this study have important theories and realities to further evaluate and identify the risk of genetic factors for the development of tuberculosis, to elucidate the pathogenesis of tuberculosis, the molecular genetic mechanism of development and the gene gene gene that may exist. The methodological part will be of reference to the molecular epidemiology of other diseases. Through this study, the risk genotypes associated with susceptibility to tuberculosis in our population, haplotype, are expected to be used to screen high risk groups for the molecular markers, and to carry out effective and targeted individual prevention of tuberculosis. Early diagnosis and prognosis are of great significance.
【學(xué)位授予單位】:中國人民解放軍軍事醫(yī)學(xué)科學(xué)院
【學(xué)位級別】:博士
【學(xué)位授予年份】:2012
【分類號】:R521
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 ;江西鎢礦工人療養(yǎng)院討論肺結(jié)核病不住院治療的意見[J];中國防癆雜志;1957年04期
2 ;肺結(jié)核病的防治[J];中原醫(yī)刊;1976年04期
3 高育瑤;結(jié)核病的預(yù)防[J];中國實(shí)用內(nèi)科雜志;1985年12期
4 王健;結(jié)核病的防治對策與瞻望(續(xù))[J];中國公共衛(wèi)生;1985年04期
5 姜建國;;肺結(jié)核病的診斷與鑒別診斷[J];中國社區(qū)醫(yī)師;1988年08期
6 容中生;肺結(jié)核的纖維支氣管鏡檢查所見[J];新醫(yī)學(xué);1992年05期
7 高北陵,粟暉,袁建文;社會心理因素對肺結(jié)核病的影響初探[J];健康心理學(xué)雜志;1993年01期
8 葉隆昌,桑義勝,蘇伯賢,張遠(yuǎn)濤,吳慶至,王立友,李月蘭;抗結(jié)核藥物聯(lián)合卡介苗(BCG)超短程治療肺結(jié)核病研究[J];蘇州醫(yī)學(xué)院學(xué)報;1994年01期
9 孫仁華,羅文侗;綜合醫(yī)院肺結(jié)核病100例誤診分析[J];臨床誤診誤治;1997年01期
10 張蓮子,高助芬;52例難治性肺結(jié)核病流行病學(xué)分析[J];安徽預(yù)防醫(yī)學(xué)雜志;1999年02期
相關(guān)會議論文 前10條
1 張?jiān)O?薛云;金蕾;李繼承;;TIRAP基因的多態(tài)性與肺結(jié)核易感性的相關(guān)性研究[A];“基因、進(jìn)化與生理功能多樣性”海內(nèi)外學(xué)術(shù)研討會暨中國生理學(xué)會第七屆比較生理學(xué)學(xué)術(shù)會議論文摘要[C];2009年
2 陳志華;王駿;許婕;;肺結(jié)核病對壽命影響分析(摘要)[A];中華醫(yī)學(xué)會結(jié)核病學(xué)分會2002年學(xué)術(shù)會議論文匯編[C];2002年
3 朱鑫明;;2007年義烏市肺結(jié)核疫情監(jiān)測結(jié)果分析[A];浙江省結(jié)核病控制學(xué)術(shù)會議論文匯編[C];2011年
4 王麟生;王志輝;;農(nóng)村結(jié)核病診斷、治療與管理93例分析(摘要)[A];中華醫(yī)學(xué)會第六屆全國結(jié)核病學(xué)術(shù)大會論文匯編[C];2000年
5 韓光;張風(fēng)波;曲陸平;車道琳;姜楊;王鵬;陳立宏;;45例糖尿病合并肺結(jié)核的臨床及影像特征分析[A];中華醫(yī)學(xué)會結(jié)核病學(xué)分會2010年學(xué)術(shù)年會論文匯編[C];2010年
6 鐘靜;何麗燕;何慶秋;;廣州市流動人口肺結(jié)核流行因素分析[A];新發(fā)傳染病防治學(xué)習(xí)研討會論文集[C];2008年
7 雷建平;;“菌陰”肺結(jié)核病診斷思考[A];中華醫(yī)學(xué)會結(jié)核病學(xué)分會2011年學(xué)術(shù)會議論文匯編[C];2011年
8 洪建軍;金曉萍;郭曉芹;;上海松江近八年新登記肺結(jié)核耐藥情況監(jiān)測[A];華東地區(qū)第十次流行病學(xué)學(xué)術(shù)會議暨華東地區(qū)流行病學(xué)學(xué)術(shù)會議20周年慶典論文集[C];2010年
9 胡海t ;;45例誤診為肺結(jié)核的肺部疾病臨床分析[A];2010年中國防癆協(xié)會臨床/基礎(chǔ)專業(yè)學(xué)術(shù)大會匯編[C];2010年
10 鄭紅;;HIV/AIDS合并肺結(jié)核病病人的護(hù)理[A];中華護(hù)理學(xué)會2009全國傳染病護(hù)理學(xué)術(shù)交流暨專題講座會議論文匯編[C];2009年
相關(guān)重要報紙文章 前10條
1 記者 鄭海華 通訊員 金裕軍;基因診斷儀快測肺結(jié)核[N];溫州日報;2010年
2 記者 李嵐 通訊員 梁秀梅;本月起,肺結(jié)核病納入新農(nóng)合范疇[N];洛陽日報;2010年
3 新疆結(jié)核病控制項(xiàng)目辦公室供稿;肺結(jié)核病是如何傳播的[N];新疆科技報(漢);2004年
4 記者陳璞;肺結(jié)核病藥物療法進(jìn)入臨床試驗(yàn)階段[N];大眾科技報;2010年
5 記者 鄭靈巧;肺結(jié)核診治優(yōu)惠政策不受戶籍限制[N];健康報;2011年
6 陳秀琴 記者 張麗霞;我市新出臺3個肺結(jié)核防治項(xiàng)目[N];大連日報;2011年
7 記者 趙玲;我國肺結(jié)核防治狀況喜憂參半[N];中國醫(yī)藥報;2011年
8 夏瑞平;鈣化不是肺結(jié)核病痊愈的唯一標(biāo)志[N];大眾衛(wèi)生報;2004年
9 朱本浩;肺結(jié)核病特殊情況的治療[N];中國醫(yī)藥報;2001年
10 桑雪玫;老年人更須警惕肺結(jié)核病[N];中國老年報;2003年
相關(guān)博士學(xué)位論文 前10條
1 馬麥卷;結(jié)核免疫應(yīng)答相關(guān)基因多態(tài)性與肺結(jié)核易感性的關(guān)聯(lián)研究[D];中國人民解放軍軍事醫(yī)學(xué)科學(xué)院;2012年
2 唐宋琪;中西醫(yī)結(jié)合治療初治繼發(fā)性肺結(jié)核方案的臨床與實(shí)驗(yàn)研究[D];成都中醫(yī)藥大學(xué);2012年
3 劉義;IFN-γ、IL-17等細(xì)胞因子在肺結(jié)核診斷和療效評價中作用及機(jī)制的研究[D];北京市結(jié)核病胸部腫瘤研究所;2011年
4 張琰;包蟲病所致免疫應(yīng)答及易感性的研究[D];新疆醫(yī)科大學(xué);2006年
5 羅茂紅;2型糖尿病并發(fā)肺結(jié)核病流行病學(xué)特征和危險因素研究[D];天津醫(yī)科大學(xué);2005年
6 林莉;miR-145促進(jìn)天然免疫應(yīng)答中巨噬細(xì)胞產(chǎn)生白細(xì)胞介素10及其表觀遺傳機(jī)制研究[D];浙江大學(xué);2011年
7 李s
本文編號:2172500
本文鏈接:http://sikaile.net/yixuelunwen/huxijib/2172500.html