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寧夏地區(qū)HBV基因分型、耐藥突變及HLA-DRB1基因多態(tài)性與乙型肝炎進展的相關(guān)性研究

發(fā)布時間:2018-06-01 09:39

  本文選題:乙型肝炎病毒 + HBV-DNA; 參考:《寧夏醫(yī)科大學(xué)》2014年碩士論文


【摘要】:目的調(diào)查寧夏地區(qū)慢性乙型肝炎(Chronic hepatitis B,CHB)患者的ALT、HBV-DNA載量與血清標(biāo)志物水平之間的關(guān)聯(lián)性,探討HBV基因型、核苷(酸)類似物(nucleostide analogues,NAs)耐藥突變模式與HBV感染后慢性化、重癥化的關(guān)系,研究HLA-DRB1基因多態(tài)性與乙肝相關(guān)性疾病的關(guān)系。 方法隨機選取CHB患者283例,應(yīng)用化學(xué)發(fā)光微粒子免疫分析法定量檢測HBV血清學(xué)標(biāo)志物和熒光定量PCR檢測HBV-DNA載量,并對結(jié)果進行相關(guān)性分析。從中選取134例住院患者的血清標(biāo)本應(yīng)用基因型特異性多對引物巢式PCR法進行HBV基因分型,再使用直接測序法對分型結(jié)果進行驗證并檢測HBV的耐藥突變,,并針對不同的基因型進行性別、年齡、肝功能、HBV-DNA載量及HBeAg水平的相關(guān)性分析,以及對不同耐藥突變模式CHB患者之間的臨床參數(shù)進行分析比較。另選取87例CHB患者、78例肝硬化患者、31例肝癌患者和50例健康對照者作為研究對象,采用序列特異性引物-聚合酶鏈?zhǔn)椒磻?yīng)(polymerase chain reaction-sequence specificprimers PCR-SSP)方法對他們的HLA-DRB1等位點進行基因分析研究。 結(jié)果(1)HBeAg陽性患者較陰性患者的HBeAb水平和HBV-DNA載量均有顯著性差異(P0.001,P0.001);女性的HBeAg和HBeAb水平均較男性高(P0.05,P0.01);30-50歲組的CHB患者的HBV-DNA、HBeAg、HBeAb與30歲組、30-50歲組比較有顯著性差異(P0.01,P0.001,P0.01);CHB患者中HBV DNA載量與HBeAg呈正相關(guān)(r=0.451,P0.001),與HBeAb呈正相關(guān)(r=0.434,P0.001);ALT與HBsAg呈正相關(guān)(r=0.131,P0.05)。 (2)134例HBV感染者的血清標(biāo)本中,B基因型11例(8.2%),其中男10例,女1例;C基因型123例(91.8%),男87例,女36例。B型和C型之間的HBV-DNA和ALT水平有顯著差異(Z=3.23,P0.05;Z=0.19,P0.05)。全部標(biāo)本中有28例發(fā)生不同位點變異,變異率為20.9%,以單位點rtS213T突變?yōu)橹,約占25.0%。 (3)與健康對照組相比,乙肝后肝硬化患者的DRB1*07、DRB1*12等位基因表達頻率明顯高于健康對照組,差異顯著(P0.05,OR=2.237,95%CI為1.689~2.961;P0.05,OR=2.317,95%CI為1.707~3.143);漢族乙肝相關(guān)性疾病患者的DRB1*04、DRB1*13、DRB1*15等位基因表達頻率與漢族健康對照者的差異顯著(P0.05,OR=0.478,95%CI為0.367~0.623;P0.05,OR=0.462,95%CI為0.355~0.602;P0.05,OR=2.292,95%為1.599~3.283)。 結(jié)論(1)寧夏地區(qū)的慢性乙型肝炎患者的HBV-DNA載量與HBeAg呈正相關(guān),兩者之間具有良好的一致性;但ALT水平與HBsAg水平呈正相關(guān);女性患者的HBeAg濃度較男性高,其余指標(biāo)無顯著性差異。慢性乙型肝炎患者以30-50歲年齡階段的居多,且此組患者的HBV-DNA、HBeAg、HBeAb與其余年齡段組比較有顯著性差異。 (2)寧夏地區(qū)慢性乙型肝炎患者的基因型包括B型、C型,其中以C基因型為主,其次為B基因型;HBV基因型與HBV-DNA、ALT水平有關(guān)聯(lián),和本研究中其他指標(biāo)比較無顯著差異;CHB患者主要對拉米夫定(LAM)與阿德福韋酯(ADV)耐藥,出現(xiàn)以單位點rtS213T為主的突變,并出現(xiàn)了混合位點突變。 (3)HLA-DRB1*07、DRB1*12可能是寧夏地區(qū)乙肝患者發(fā)生肝硬化的易感基因;HLA-DRBI*04和DRBI*l3可能是寧夏地區(qū)漢族人群的抗性基因;攜帶DRB1*15的漢族人群更容易發(fā)生乙肝相關(guān)性疾病。
[Abstract]:Objective To investigate the relationship between HBV - DNA load and serum marker level in patients with chronic hepatitis B ( HBV ) in Ningxia , and explore the relationship between HBV genotype , nucleoside ( acid ) analog ( NAs ) resistance mutation pattern and chronic and severe HBV infection , and study the relationship between HLA - DRB1 gene polymorphism and hepatitis B - related diseases .

Methods A total of 283 patients were randomly selected , and the HBV - DNA content was determined quantitatively by using the method of chemiluminescence , and the correlation of HBV - DNA level and HBV - DNA level was analyzed by direct sequencing .

Results ( 1 ) There was significant difference between HBeAg - positive patients and HBeAg - positive patients ( P0.001 , P0.001 ) .
The levels of HBeAg and HBeAg in women were higher than those in males ( P0.05 , P0.01 ) .
HBV - DNA , HBeAg , HBeAg , HBeAg , HBeAg , HBeAg , HBeAg , HBeAg , HBeAg and HBeAg were significantly different between 30 - 50 years old and 30 - 50 years old ( P0.01 , P0.001 , P0.01 ) .
The amount of HBV DNA was positively correlated with HBeAg ( r = 0.451 , P0.001 ) and positive correlation with HBeAg ( r = 0.434 , P0.001 ) .
ALT was positively correlated with HBsAg ( r = 0.131 , P0.05 ) .

( 2 ) Of 134 patients with HBV infection , 11 cases ( 8.2 % ) had genotype B , 10 were male and 1 female ;
There were 123 cases of genotype C ( 91.8 % ) , 87 males and 36 females . There was significant difference in HBV - DNA and ALT levels between genotype B and C ( Z = 3.23 , P0.05 ) .
Z=0.19,P0.05). In all the specimens , 28 cases had different site variation , and the mutation rate was 20 . 9 % . rtS213T mutation was dominant at the unit point , accounting for 25.0 % .

( 3 ) The frequency of DRB1 * 07 and DRB1 * 12 allele in patients with cirrhosis after hepatitis B was significantly higher than that in healthy control group ( P0.05 , OR = 2.237 , 95 % CI was 1.689 ~ 2.961 ) .
P0.05,OR=2.317,95%CI涓

本文編號:1963725

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