抗結(jié)核藥物所致肝損害易感性與其相關(guān)代謝酶基因多態(tài)性關(guān)系的研究
發(fā)布時(shí)間:2018-04-25 09:32
本文選題:肝損害 + 結(jié)核。 參考:《新疆醫(yī)科大學(xué)》2014年博士論文
【摘要】:目的:結(jié)核病是由結(jié)核分枝桿菌引起的慢性呼吸道傳染病。在全球22個(gè)結(jié)核病高負(fù)擔(dān)國(guó)家中,我國(guó)僅次于印度,位居第二。中國(guó)每年有超過100萬的肺結(jié)核患者正在接受由中國(guó)國(guó)家結(jié)核預(yù)防與控制規(guī)劃提供的標(biāo)準(zhǔn)短程抗結(jié)核治療。標(biāo)準(zhǔn)短程化療方案中主要使用的3種一線藥物可引起不同頻次、不同嚴(yán)重程度的不良反應(yīng),其中發(fā)病率較高且危害最大的是肝損害?菇Y(jié)核藥物所致肝損害(Anti-TBDrug-induced Liver Injury,ATLI)的發(fā)生不僅會(huì)增加患者的痛苦和疾病負(fù)擔(dān),影響抗結(jié)核治療的進(jìn)行及結(jié)核治愈率,也間接影響我國(guó)結(jié)核病防治規(guī)劃的落實(shí)。因此,了解ATLI的發(fā)生機(jī)制和易患因素,對(duì)減少或避免肝損害的發(fā)生,使抗結(jié)核治療順利完成具有重要意義。新疆結(jié)核病疫情嚴(yán)重,高于全國(guó)水平,目前DOTS治療方案已在我區(qū)廣泛使用,但未見有ATLI研究方面的相關(guān)報(bào)道。因此,本研究的目的在于了解新疆接受標(biāo)準(zhǔn)短程化療的肺結(jié)核患者人群ATLI的發(fā)生率及其影響因素,并從遺傳學(xué)的角度分析ATLI易感性與其藥物代謝酶(DMEs)基因多態(tài)性的關(guān)系,揭示ATLI的遺傳特征;同時(shí)針對(duì)ATLI這種復(fù)雜性疾病,進(jìn)一步探討基因-環(huán)境、基因-基因的交互作用在ATLI發(fā)病過程的作用,為ATLI發(fā)病機(jī)制和遺傳易感性研究提供參考。方法:本研究按照納入標(biāo)準(zhǔn)連續(xù)收集2010年1月至2012年8月在研究現(xiàn)場(chǎng)疾病預(yù)防控制中心結(jié)防機(jī)構(gòu)登記并接受國(guó)家規(guī)劃6~9個(gè)月免費(fèi)標(biāo)準(zhǔn)短程化療的2811例肺結(jié)核病人(≥14周歲)作為研究對(duì)象,在病人簽署知情同意書后,對(duì)其進(jìn)行病歷資料查閱、問卷調(diào)查和2月末(包括強(qiáng)化期治療期間出現(xiàn)不適癥狀的病人)肝功能檢測(cè)并保存血樣標(biāo)本。依據(jù)肝損害判斷標(biāo)準(zhǔn)確定肝損害病例。基于對(duì)2811例肺結(jié)核患者資料ATLI的發(fā)生率及其影響因素的分析,掌握ATLI的發(fā)生率狀況及其分布特征,篩查影響ATLI的主要危險(xiǎn)因素;以2811例肺結(jié)核患者中的維吾爾族患者2244例作為研究對(duì)象,其中,將發(fā)生肝損害的89例患者組成ATLI病例組,肝功能正常者1858例組成對(duì)照組,通過PCR-LDR方法對(duì)NAT2基因慢乙;汀YP2E1RsaI基因C1/C1基因型和GSTM1*null基因型及GSTT1*null基因型進(jìn)行測(cè)定,采用單因素和非條件Logistic回歸方法探討NAT2基因、CYP2E1RsaI基因、GSTM1基因和GSTT1基因多態(tài)性與ATLI易感性之間的關(guān)系;采用篩檢試驗(yàn)分析思路探討藥物代謝酶基因型對(duì)ATLI的預(yù)測(cè)價(jià)值;采用單純病例研究方法、叉生分析和廣義多因子降維法(GMDR)探討在ATLI的發(fā)病過程中存在的基因-環(huán)境、基因-基因的交互作用。結(jié)果:1)共納入肺結(jié)核患者2842例,其中31例沒有血樣,有效例數(shù)2811例,平均年齡43.09±18.32歲。男性占57.5%,女性占42.5%;初治占91.4%,復(fù)治占8.6%;維吾爾族占79.8%,漢族占10.9%,哈薩克族占2.8%,其他民族占6.5%;南疆占61.3%,北疆占38.7%。2)2811例肺結(jié)核患者中,359例發(fā)生肝異常,肝異常發(fā)生率為12.7%,110例發(fā)生ATLI,ATLI發(fā)生率為3.9%。其中,男性ATLI發(fā)生率為4.7%,女性ATLI發(fā)生率為2.8%;漢族ATLI發(fā)生率為3.9%,維吾爾族ATLI發(fā)生率為4.0%,哈薩克族ATLI發(fā)生率為2.5%,其他民族ATLI發(fā)生率為3.8%;<40歲年齡組ATLI發(fā)生率為4.5%,40-歲年齡組ATLI發(fā)生率為3.2%,60-歲年齡組ATLI發(fā)生率為3.6%;南疆ATLI發(fā)生率為4.5%,北疆ATLI發(fā)生率為3.0%;初治結(jié)核病人ATLI發(fā)生率為4.1%,復(fù)治結(jié)核病人ATLI發(fā)生率為2.1%。3)110例ATLI患者進(jìn)行嚴(yán)重程度分級(jí),其中輕度肝損害(血清轉(zhuǎn)氨酶水平增高至正常值上限的2-3倍)65人,占59.1%;中度肝損害(血清轉(zhuǎn)氨酶水平增高至正常值上限的3~5倍)31人,,占28.2%;重度肝損害(血清轉(zhuǎn)氨酶水平增高至正常值上限的5倍以上)14人,占12.7%。4)基于2811例肺結(jié)核患者人群,單因素分析結(jié)果顯示,ATLI組與對(duì)照組之間在性別、是否服用保肝藥物、治療方案及體重方面有顯著性差異,女性ATLI的發(fā)病率低于男性,服用保肝藥物者發(fā)病率較高,服用FDC者發(fā)病率并未低于服用板式藥物者,體重≥50kg者發(fā)病率反而高于體重<50kg者,相應(yīng)的OR(95%CI)值分別為0.568(0.376~0.859)、2.280(1.484~3.502)、1.809(1.223~2.678)、3.140(1.355~7.278)。多因素Logistic回歸分析顯示,性別、服用保肝藥物、體重均與ATLI有關(guān)聯(lián),調(diào)整OR(95%CI)值分別為0.461(0.239~0.888)、2.491(1.329~4.670)和3.423(1.174~9.979);年齡與ATLI也有關(guān)聯(lián),與青年組相比,中年組和老年組發(fā)生ATLI危險(xiǎn)的OR(95%CI)值分別為0.255(0.105~0.616)、0.639(0.324~1.263)。5)基于2811例肺結(jié)核患者人群,以性別、年齡、民族、飲酒史等為協(xié)變量,使用Logistic回歸建立模型,預(yù)測(cè)病人服藥保肝藥物的傾向,以預(yù)測(cè)概率作為傾向評(píng)分,對(duì)人群進(jìn)行標(biāo)準(zhǔn)化死亡比加權(quán)處理。加權(quán)后未見使用保肝藥物、使用葡醛內(nèi)酯和使用肌酐組與未使用任何保肝藥物組的差異有統(tǒng)計(jì)學(xué)意義。使用護(hù)肝片組的ATLI發(fā)生率高于未使用保肝藥物組,差異有統(tǒng)計(jì)學(xué)意義(P=0.002)。6)基于2244例維吾爾族患者人群,單因素和多因素非條件Logistic回歸分析結(jié)果顯示,NAT2基因多態(tài)性位點(diǎn)481(rs1799929)CT基因型與ATLI的發(fā)生有顯著性關(guān)聯(lián),調(diào)整OR(95%CI)值為1.780(1.086~2.917);同時(shí)也發(fā)現(xiàn)481(rs1799929)位點(diǎn)在顯性模型中存在與ATLI的關(guān)聯(lián)關(guān)系。根據(jù)乙酰化代謝能力不同,NAT2基因可分為快乙;汀⒅虚g乙;秃吐阴;停钥煨蜑閰⒖,單因素和多因素非條件Logistic回歸分析均顯示,中間型發(fā)生ATLI的風(fēng)險(xiǎn)高于快乙酰型,慢乙酰型高于中間型,以上差異均無統(tǒng)計(jì)學(xué)意義。但發(fā)現(xiàn)慢乙;蛐蚇AT2*5/6與ATLI的發(fā)生有關(guān),調(diào)整OR(95%CI)值為3.417(1.411~8.276)。分層分析結(jié)果顯示,女性人群、<60歲人群、≥35歲人群和南疆人群481(rs1799929)位點(diǎn)的雜合型CT發(fā)生ATLI的風(fēng)險(xiǎn)均顯著高于其野生型CC。在北疆人群中發(fā)現(xiàn),857(rs1799931)位點(diǎn)的突變純合子AA發(fā)生ATLI的風(fēng)險(xiǎn)顯著高于其野生型GG,調(diào)整OR(95%CI)值為23.280(1.651~328.344);贜AT2基因3個(gè)多態(tài)性位點(diǎn)481(rs1799929)、590(rs1799930)和857(rs1799931)構(gòu)建的單倍型分析發(fā)現(xiàn),攜帶590(rs1799930)突變等位基因的單倍型C-A-G與ATLI的關(guān)聯(lián)關(guān)系有統(tǒng)計(jì)學(xué)意義,調(diào)整OR(95%CI)值為2.174(1.365~3.461)。7)基于2244例維吾爾族患者人群,單因素和多因素非條件Logistic回歸分析結(jié)果顯示,未發(fā)現(xiàn)CYP2E1RsaI基因型與ATLI的發(fā)生有關(guān);在亞組人群中也未觀察到CYP2E1RsaI基因型與ATLI的關(guān)聯(lián)關(guān)系;未發(fā)現(xiàn)GSTM1基因型、GSTT1基因型與ATLI的關(guān)聯(lián)關(guān)系有統(tǒng)計(jì)學(xué)意義;在亞組人群中也未發(fā)現(xiàn)GSTM1基因型、GSTT1基因型與ATLI的關(guān)聯(lián)關(guān)系。8)基于2244例維吾爾族患者人群中的89例ATLI患者,未發(fā)現(xiàn)NAT2乙酰型、CYP2E1RsaI基因型、GSTM1基因型及GSTT1基因型與ATLI發(fā)生的嚴(yán)重程度有關(guān)。9)基于2244例維吾爾族肺結(jié)核患者人群,未發(fā)現(xiàn)NAT2乙酰型、CYP2E1RsaI基因型和GSTM1基因型及GSTT1基因型對(duì)ATLI有預(yù)測(cè)價(jià)值。10)基于2244例維吾爾族肺結(jié)核患者,單純病例研究、叉生分析和GMDR法結(jié)果均顯示NAT2乙酰型與飲酒史在ATLI發(fā)生中存在交互作用;非條件Logistic回歸、叉生分析結(jié)果均提示CYP2E1RsaI基因型和GSTT1基因型在ATLI的發(fā)病過程中可能存在交互作用。結(jié)論:1)本研究人群抗結(jié)核藥物治療強(qiáng)化期末ATLI發(fā)生率為3.9%,重度肝損害發(fā)生率為0.50%。無癥狀A(yù)TLI患者占33.6%,建議對(duì)接受抗結(jié)核治療人群,應(yīng)加強(qiáng)肝功能檢測(cè)。2)通過對(duì)影響ATLI相關(guān)因素的篩選,本研究發(fā)現(xiàn)ATLI可能與性別、年齡和體重有關(guān);尤其是體重≥50kg的男性肺結(jié)核患者,年齡越小發(fā)生ATLI的風(fēng)險(xiǎn)越大,故對(duì)這類人群應(yīng)予以密切觀察肝功能變化。3)本研究人群中有46.5%的肺結(jié)核患者使用了不同種類的保肝藥物,主要包括葡醛內(nèi)酯、肌酐和護(hù)肝片等,但未觀察到保肝藥物的保護(hù)作用,甚至發(fā)現(xiàn)預(yù)防性服用保肝藥物可能有增加ATLI的發(fā)生風(fēng)險(xiǎn),故對(duì)未發(fā)生且并非必然發(fā)生ATLI的肺結(jié)核患者使用保肝藥物預(yù)防是否合適,保肝藥物是否確實(shí)有效仍需要嚴(yán)格設(shè)計(jì)的大規(guī)模隨機(jī)對(duì)照試驗(yàn)證實(shí)。4)基于維吾爾族肺結(jié)核患者人群的研究結(jié)果提示,NAT2基因多態(tài)性位點(diǎn)481(rs1799929)與ATLI之間存在關(guān)聯(lián),其最佳關(guān)聯(lián)模型是顯性遺傳模型。發(fā)現(xiàn)NAT2慢乙;蛐蚇AT2*5/6與ATLI的發(fā)生有關(guān),可能尚屬首次報(bào)道。分層分析的研究結(jié)果提示,年齡介于35歲~60歲之間的南疆維吾爾族女性肺結(jié)核患者,攜帶NAT2基因481(rs1799929)位點(diǎn)的雜合型CT者則發(fā)生ATLI的風(fēng)險(xiǎn)顯著高于其野生型CC;北疆維吾爾族肺結(jié)核患者攜帶NAT2基因857(rs1799931)位點(diǎn)的突變純合子AA者發(fā)生ATLI的風(fēng)險(xiǎn)顯著高于其野生型GG。單倍體分析發(fā)現(xiàn),攜帶590(rs1799930)突變等位基因的單倍型C-A-G是發(fā)生ATLI的危險(xiǎn)因素。在維吾爾族肺結(jié)核患者人群中的研究結(jié)果尚不能確定,CYP2E1RsaI基因型與ATLI的關(guān)聯(lián)關(guān)系以及GSTM1基因型、GSTT1基因型與ATLI的關(guān)聯(lián)關(guān)系。也不能確定,NAT2乙酰型、CYP2E1RsaI基因型和GSTM1基因型及GSTT1基因型對(duì)ATLI有較好的預(yù)測(cè)價(jià)值。5)基于維吾爾族肺結(jié)核患者人群的研究結(jié)果提示,NAT2乙酰型與飲酒史存在基因-環(huán)境的交互作用;也提示CYP2E1RsaI基因型和GSTT1基因型存在基因-基因的交互作用,由于樣本量較小,交互作用關(guān)系很微弱,有待于進(jìn)一步探討。
[Abstract]:Objective : Tuberculosis is a chronic respiratory infectious disease caused by Mycobacterium tuberculosis . In the world of 22 tuberculosis high - burden countries , China ranks second only after India . More than 1 million TB patients in China are receiving standard short - range anti - TB treatment provided by China National Tuberculosis Prevention and Control Plan .
Methods : To study the effect of gene - environment , gene - gene interaction on ATLI pathogenesis and to provide a reference for the pathogenesis and genetic susceptibility of ATLI .
In 2811 patients with pulmonary tuberculosis , 2244 patients with pulmonary tuberculosis were treated as subjects . Among them , 89 patients with hepatic impairment were composed of ATLI case group and 1858 healthy controls . The relationship between NAT2 gene , CYP2E1 RsaI gene , GSTM1 null genotype and GSTT1 * null genotype was investigated by PCR - LDR method .
The predictive value of drug metabolism enzyme genotype on ATLI was studied by means of screening test .
Results : 1 ) There were 2842 cases of pulmonary tuberculosis , including 31 cases without blood sample , effective number of 2811 cases , average age 43.09 鹵 18.32 years old , male 57.5 % , female 42.5 % ;
The primary treatment accounted for 91.4 % , and the cure rate was 8.6 % .
The Uygur nationality accounted for 79.8 % , Han nationality 10.9 % , Kazaks 2.8 % , and others 6.5 % ;
Among 2811 patients with pulmonary tuberculosis , 359 of 2811 patients with pulmonary tuberculosis had liver abnormalities , the incidence of hepatic abnormality was 12.7 % , the incidence of ATLI and ATLI was 3.9 % . Among them , the incidence of ATLI in male was 4.7 % and the rate of ATLI was 2.8 % .
The incidence of ATLI in Han nationality was 3.9 % , the incidence of ATLI in Uygur was 4.0 % , the incidence rate of ATLI was 2.5 % , and the incidence rate of ATLI was 3.8 % .
The incidence of ATLI in the age group was 4.5 % , the incidence of ATLI in the 40 - year age group was 3.2 % , and the rate of ATLI in the 60 - year age group was 3.6 % .
The incidence of ATLI in South Xinjiang was 4.5 % , and the incidence of ATLI in North Xinjiang was 3.0 % .
The incidence of ATLI in patients with tuberculosis was 4.1 % , and the incidence of ATLI in patients with tuberculosis was 2.1 % . 3 ) 110 patients with ATLI were graded severely , with mild hepatic impairment ( 2 - 3 times higher in serum transaminase level up to upper limit of normal value ) , accounting for 59.1 % ;
Moderate hepatic impairment ( serum transaminase level increased to 3 - 5 times the upper limit of normal value ) , accounting for 28 . 2 % ;
The results of single factor analysis showed that there was significant difference between ATLI group and control group .
The results showed that the incidence of ATLI in patients with pulmonary tuberculosis was higher than that of non - hepatoprotective drug group ( P = 0.002 ) .
It was found that the risk of ATLI was significantly higher than that of wild type GG . The risk of ATLI was 3.417 ( 1.411 锝
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