新疆维吾尔族、汉族胃癌血清胃蛋白酶原、胃泌素-17水平及其与幽门螺杆菌感染相关性的临床研究

背景:血清胃蛋白酶原(PG)和胃泌素-17(G-17)水平以及幽门螺杆菌(Hp)感染与胃癌的发生关系密切。新疆维吾尔族、汉族胃癌血清PG、G-17与Hp感染关系的研究少见。目的:探讨新疆维吾尔族、汉族胃癌患者血清PG、G-17水平及其与Hp感染的关系。方法:选择198例维吾尔族胃癌和50例汉族胃癌患者,分别以同民族健康体检者作为正常对照。应用ELISA法检测血清PGⅠ、PGⅡ和G-17水平,计算PGⅠ/PGⅡ比值(PGR);应用尿素呼气试验和粪便Hp抗原行Hp检测。结果:维吾尔族、汉族胃癌组血清PGⅠ和PGR均明显低于相应对照组,血清PGⅡ和G-17明显升高(P0.05);维吾尔族胃癌组血清PGⅠ和PGR明显低于汉族胃癌组,血清G-17明显升高(P0.05)。维吾尔族、汉族胃癌组Hp感染率均明显高于相应对照组(P0.05)。汉族胃癌组Hp阳性者血清PGⅠ和PGR明显低于同组Hp阴性者,血清PGⅡ、G-17明显升高(P0.05);维吾尔族胃癌组Hp阳性者血清PGⅠ、PGⅡ、G-17明显高于Hp阴性者,PGR明显降低(P0.05)。维吾尔族胃窦癌血清PGⅠ、PGⅡ和PGR均明显高于胃体癌和近端胃癌(P0.05)。结论:血清PGⅠ、PGR降低和血清G-17升高可作为新疆地区维吾尔族、汉族胃癌筛查的血清学指标;维吾尔族、汉族胃癌患者血清PGⅠ、PGR和G-17水平改变与Hp感染相关。     

肺结核病患者与HLA-DRBI等位基因的关联

目的：通过对湖北省汉族肺结核病（PTB）患者进行HLA-DRB1基因分型,探讨此人群与HLA-DRB1的相关性。方法：用序列特异性寡核苷酸探针聚合酶链反应（PCR-SSOP）技术对174例PTB患者及1358例健康人群进行HLA-DRB1基因分型。基因频率与Hardy-Weinberg平衡卡方检测使用arlequin软件进行,组间比较用Fisher精确概率法计算P值,检测水准为a=0．05,相对危险系数用RR表示,RR：A（A＋B）／C（C＋D）。结果：174例PTB患者HLA-DRB1基因分型结果与希望值进行H-W平衡检测（P〉0．05）。此人群检出HLA-DRB1等位基因共13种与对照组一致。其中RB1＊08与DRB1＊09基因频率显著高于对照组,差异有统计学意义（P〈O．01）,且RR〉1,说明DRB1＊08与DRB1＊09或与其连锁的单倍型可能是的PTB易感基因;RB1＊10与DRB1＊13基因频率显著低于对照组,差异有统计学意义（P〈0．05）,且RR〈1,说明RB1＊10与DRB1＊13可能是PTB的保护基因。其余等位基因频率组间比较均无统计学意义。结论：湖北省汉族PTB患者这个疾病群体遗传平衡被杂化,其与HLA-DRBl有一定的关联,但有其自身的特点。     

新疆地区维吾尔族与汉族慢性胃炎患者间幽门螺杆菌不同抗体的情况分析

目的探讨新疆地区维吾尔族与汉族慢性胃炎患者与幽门螺杆菌不同抗体的关系。 方法纳入2014年1至8月新疆维吾尔自治区人民医院诊断为慢性胃炎的患者198例,维吾尔族96例,汉族102例,均行幽门螺杆菌、幽门螺杆菌分型检测及胃十二指肠镜检查并活检,用χ²检验分析两组间幽门螺杆菌不同抗体的阳性率是否存在差异,对有差异者进行相关性分析。 结果本研究中幽门螺旋杆菌5种不同抗体阳性率,维吾尔族较汉族明显增高;维吾尔族与汉族间CagA-128KD、VacA-110KD、VacA-90KD、UreB-66KD及UreA-30KD的阳性率比较,差异有统计学意义(P<0.001);CagA-128KD、VacA-110KD、VacA-90KD、UreB-66KD及UreA-30KD与维吾尔族慢性胃炎患者相关,其中与CagA-128KD密切相关(r＝0.506、0.410、0.273、0.285、0.277,P<0.001、<0.001、<0.05、<0.05、<0.05)。 结论维吾尔族慢性胃炎患者较汉族慢性胃炎患者幽门螺旋杆菌5种不同抗体阳性率明显高,维吾尔族慢性胃炎患者与CagA-128KD密切相关。     

人类白细胞抗原-DRB1与胃腺癌及其临床特征和幽门螺杆菌感染的相关性

目的：探讨人类白细胞抗原（HLA）－DRB1等位基因与胃腺癌及其临床特征和幽门螺杆菌（Hp)感染的关联性，方法：运用序列特异性引物聚 合酶链反应和等基因序列分析技术，检测无亲缘关系湖北省汉族健康人136例，胃癌组63例的HLA－DRB1基因，内镜活检，Giemsa染色和（或）外周血ELISA检查胃黏膜Hp感染情况，SAS软件数据处理，结果：HLA－DRB10901，12等位基因均与湖北省汉族人胃腺癌呈正相关，HLA－DRB115等位基因同呈负相关，携带及非携事寂述各等位基因患者，分别就其临床特征，包括平均患病年龄，性别比，肿瘤原发部位，TNM分期，肿瘤细胞分化程度以及Hp感染率等情况比较，差异均无显著性，结论：HLA－DRB10901，12等位基因均与湖北省汉族胃腺癌呈正相关，而LA－DRB115则呈负相关，上述各相关的HLA－DRB1等位基因与胃腺癌患者患病年龄，性别，TMN分期，肿瘤细胞分化程度无关，Hp感染虽为胃癌重要的致病因素，但并不是HLA-DRB1等位基因通过增加Hp感染危险性，而影响胃癌的遗传易感性。     

HLA-DRB1基因多态性与扩张型心肌病的相关分析

目的探讨扩张型心肌病（IDC）与人类白细胞抗原（HLA）-DRB1基因多态性的关系。方法用聚合酶链反应一序列特异性引物方法检测301例IDC患者（IDC组）与436例正常人（对照组）的HLA-DRB1等位基因分布情况。结果IDC组HLA-DRB1＊11、HLA-DRB1＊12、HLA-DRB1＊14的基因频率明显高于对照组（RR=2．91、4．02、3．78，P〈0．05）；IDC组同时携带HLA-DRB1＊12、DRB1＊14基因型的阳性率亦显著高于对照组（RR=6．24．P〈0．01）。结论HIA-DRB1＊11、DRB1＊12、DRB1＊14与IDC有明显相关性。     

非酒精性脂肪性肝病患者幽门螺杆菌感染状况调查

目的探讨非酒精性脂肪性肝病（NAFLD）患者幽门螺杆菌（Hp）的感染状况。方法在946例NAFLD患者和3725例健康对照人群,采用免疫胶体金法检测血清抗幽门螺杆菌尿素酶抗体。结果在男性中,NAFLD和对照组人群Hp感染率分别为21.3%和21.6%（P〉0.05）,在女性分别为14.9%和16.6%（P〉0.05）;在男性中,轻、中和重度NAFLD患者Hp感染率分别为21.9%、20.8%和17.4%（P〉0.05）,在女性分别为16.4%、16.7%和15.0%（P〉0.05）;Hp阳性与Hp阴性人群体重指数、肝功能和血脂水平亦无明显差异。结论幽门螺杆菌感染可能对NAFLD发病、肝功能指标、血糖及血脂水平无明显影响。     

山东籍汉族寻常型天疱疮与HLA-DRB1基因的相关性

目的 探讨HLA-DRB1位点基因在山东籍汉族寻常型天疱疮易感性中的作用.方法 用序列特异性引物-聚合酶链反应（PCR-SSP）方法,对61例寻常型天疱疮（PV）患者和70名正常对照者进行了HLA-DRB1等位基因的分型,并分析了DRB1基因在两组中的分布.结果 与正常对照组比较,PV患者组DRB1＊14（＊1401、＊1404、＊1405、DBR1＊0406）基因频率明显增高（P＜0.05）.结论 山东籍汉族PV主要与HLA-DRB1基因有关.     

苗族人群幽门螺旋杆菌CagA因子与胃癌的相关性分析

目的探讨怀化地区麻阳苗族自治县苗族人群幽门螺杆菌感染特别是其细胞色素相关基因（CagA）与胃癌的相关性。方法收集我院2001-2008年经病理检查确诊的胃癌患者100例,其中苗族52例,汉族48例,苗族患者平均年龄（60．12&#177;12．35）岁,汉族患者平均年龄（67．75&#177;11．64）岁。分别检测胃癌患者Hp和Hp CagA基因株的感染率。结果苗族人群胃癌组Hp的阳性率均显著高于汉族人群胃癌组（P〈0．05）,苗族人群胃癌组Hp cagA基因株阳性率均显著高于汉族人群胃癌组（P〈0．05）。结论Hp cagA基因株感染与胃癌关系密切,苗族人群胃癌患者CagA基因株感染率显著高于汉族胃癌患者组,这是否是苗族人群胃癌发病较早、发病率较高的一种原因尚待进一步研究。     

慢性丙型肝炎患者血清抗Hp抗体与临床特征的关系

目的探讨幽门螺杆菌（Helicobacter pylori,Hp）在慢性丙型肝炎中的作用。方法采用病例对照研究的方法分析282例慢性丙型肝炎患者的Hp感染状况与年龄变化、HCV RNA载量和HCV RNA分型的关系。结果Hp感染率随年龄变化无明显差异（P〉0.05）,Hp感染率在慢性丙型肝炎组（55.6%）、丙型肝炎肝硬化组（76.5%）和丙型肝炎合并肝癌组（78.6%）明显高于健康对照组（43.4%）（均P〈0.01）,各组与慢性胃炎组（57.9%）相比较无明显差异（P〉0.05）,其中肝硬化组和合并肝癌组Hp感染率均高于肝炎组（P〈0.05）。不同病毒载量的慢性丙型肝炎患者的Hp感染率均明显高于健康对照组（P〈0.01）,但不同病毒载量之间无明显差异（P〉0.05）。慢性丙型肝炎患者基因1a型、1b型、2a型和2b型患者Hp感染率分别为60.0%、64.8%、61.0%和62.7%,各基因型之间比较无明显差异（P〉0.05）。结论慢性丙型肝炎患者Hp感染率明显增加,且Hp感染率随着肝病病变程度的进展而增加。     

新疆维吾尔族人群幽门螺杆菌vacA基因型分布特征

目的探讨新疆维吾尔族胃病患者感染幽门螺杆菌（Helieobacter pyroli,Hp）vacA基因亚型的分布状况及与胃病的关系。方法临床收集维吾尔族人群慢性浅表性胃炎、慢性萎缩性胃炎、胃溃疡和胃癌患者胃镜活检标本,采用Hp分离培养技术对其进行培养鉴定;采用Chelex 100提取Hp基因组,聚合酶链反应-序列特异性引物（PCR-SSP）对Hp基因组DNA进行vacA基因亚型检测,并对vacA基因亚型与特定疾病间的关系进行分析。结果胃活检标本Hp培养阳性46例,上述4种病人vacAs区s1a型阳性率分别为78.6%（11/14）、63.2%（12/19）、66.7%（4/6）和85.7%（6/7）,vacAs区s2型阳性率分别为0（0/14）、5.3%（1/19）、0（0/6）和14.3%（1/7）,vacA m区m1b型阳性率分别为14.3%（2/14）、10.5%（2/19）、16.7%（1/6）和0（0/7）,vacA m区m2型阳性率分别为78.6%（11/14）、57.9%（11/19）、50.0%（3/6）和85.7%（6/7）。4种疾病间的vacA亚型分布差异均无统计学意义（P〉0.05）。结论新疆维吾尔族人群中Hp vacA亚型以s1a/m2型为主。     

TLR4基因多态性与慢性胃炎幽门螺杆菌感染无相关性

目的:研究我国湖北汉族人群TLR4基因 Asp299Gly多态性与慢性浅表性胃炎及幽门螺杆(H pylori)感染的关系．方法:采用病例-对照研究和多聚酶链反应-限制性片段长度多态性(PCR-RFLP)方法,检测 115例慢性浅表性胃炎患者115例和正常对照者2644例的TLR4等位基因Asp299Gly基因型分布．结果:慢性浅表性胃炎患者的H pylori阳性率 89．6％,显著高于正常对照组61．7％(P<0．000 1, OR=5．319．95％CI:2．784-10．162)．在H pylori 感染相关性的慢性胃炎组和正常对照组中 TLR4基因Asp299Gly基因型所有个体均为 AA纯合子,未发现的突变型,其基因型、等位基因以及携带者频率总体分布无显著性差异．结论:TLR4基因Asp299Gly基因多态性与H pylori相性慢性胃炎无明显相关性．     

A low prevalence of H pylori and endoscopic findings in HIV-positive Chinese patients with gastrointestinal symptoms

AIM： To compare the prevalence of H pylori infection, peptic ulcer, cytomegalovirus （CNV） infection and Candida esophagitis in human immunodeficiency virus （HIV）- positive and HIV-negative patients, and evaluate the impact of CD4 lymphocyte on H pylori and opportunistic infections.
METHODS： A total of 151 patients （122 HIV-positive and 29 HIV-negative） with gastrointestinal symptoms were examined by upper endoscopy and biopsy. Samples were assessed to determine the prevalence of Hpylori infection, CMV, candida esophagitis and histologic chronic gastritis.
RESULTS： The prevalence of Hpylori was less common in HIV-positive patients （22.1%） than in HIV-negative controls （44.8%; P 〈 0.05）, and the prevalence of H pylori displayed a direct correlation with CD4 count stratification in HIV-positive patients. In comparison with HIV-negative group, HIV-positive patients had a lower incidence of peptic ulcer （20.7% vs 4.1%; P 〈 0.01）, but a higher prevalence of chronic atrophy gastritis （6.9% vs 24.6%; P 〈 0.05）, Candida esophagitis and CMV infection. Unlike HIV-negative group, H pylori infection had a close relationship to chronic active gastritis （P 〈 0.05）. In HIV-positive patients, chronic active gastritis was not significantly different between those with Hpylori infection and those without.
CONCLUSION： The lower prevalence of H pylori infection and peptic ulcer in HIV-positive patients with gastrointestinal symptoms suggests a different mechanism of peptic ulcerogenesis and a different role of H pylori infection in chronic active gastritis and peptic ulcer. The pathogen of chronic active gastritis in HIV-positive patients may be different from the general population that is closely related to Hpylori infection.     

A low prevalence of H pylori and endoscopic findings in HIV-positive Chinese patients with gastrointestinal symptoms

AIM: To compare the prevalence of H pylori infection,peptic ulcer,cytomegalovirus (CMV) infection and Candida esophagitis in human immunodeficiency virus (HIV)-positive and HIV-negative patients,and evaluate the impact of CD4 lymphocyte on H pylori and opportunistic infections. METHODS: A total of 151 patients (122 HIV-positive and 29 HIV-negative) with gastrointestinal symptoms were examined by upper endoscopy and biopsy. Samples were assessed to determine the prevalence of H pylori infection,CMV,candida esophagitis and histologic chronic gastritis. RESULTS: The prevalence of H pylori was less common in HIV-positive patients (22.1%) than in HIV-negative controls (44.8%; P < 0.05),and the prevalence of H pylori displayed a direct correlation with CD4 count stratification in HIV-positive patients. In comparison with HIV-negative group,HIV-positive patients had a lower incidence of peptic ulcer (20.7% vs 4.1%; P < 0.01),but a higher prevalence of chronic atrophy gastritis (6.9% vs 24.6%; P < 0.05),Candida esophagitis and CMV infection. Unlike HIV-negative group,H pylori infection had a close relationship to chronic active gastritis (P < 0.05). In HIV-positive patients,chronic active gastritis was not significantly different between those with H pylori infection and those without. CONCLUSION: The lower prevalence of H pylori infection and peptic ulcer in HIV-positive patients with gastrointestinal symptoms suggests a different mechanism of peptic ulcerogenesis and a different role of H pylori infection in chronic active gastritis and peptic ulcer. The pathogen of chronic active gastritis in HIV-positive patients may be different from the general population that is closely related to H pylori infection.     

A low prevalence of H pylori and endoscopic findings in HTV-positive Chinese patients with gastrointestinal symptoms

AIM: To compare the prevalence of H pylori infection,peptic ulcer, cytomegalovirus (CMV) infection and Candida esophagitis in human immunodeficiency virus (HIV)-positive and HIV-negative patients, and evaluate the impact of CD4 lymphocyte on H pylori and opportunistic infections.METHODS: A total of 151 patients (122 HIV-positive and 29 HIV-negative) with gastrointestinal symptoms were examined by upper endoscopy and biopsy. Samples were assessed to determine the prevalence of H pylori infection,CMV, candida esophagitis and histologic chronic gastritis.RESULTS: The prevalence of H pylori was less common in HIV-positive patients (22.1%) than in HIV-negative controls (44.8%; P ＜ 0.05), and the prevalence of H pylori displayed a direct correlation with CD4 count stratification in HIV-positive patients. In comparison with HIV-negative group, HIV-positive patients had a lower incidence of peptic ulcer (20.7% vs 4.1%; P ＜ 0.01), but a higher prevalence of chronic atrophy gastritis (6.9% vs 24.6%; P ＜ 0.05), Candida esophagitis and CMV infection. Unlike HIV-negative group, H pylori infection had a close relationship to chronic active gastritis (P＜0.05). In HIV-positive patients, chronic active gastritis was not significantly different between those with H pylori infection and those without.CONCLUSION: The lower prevalence of H pylori infection and peptic ulcer in HTV-positive patients with gastrointestinal symptoms suggests a different mechanism of peptic ulcerogenesis and a different role of H pylori infection in chronic active gastritis and peptic ulcer.The pathogen of chronic active gastritis in HIV-positive patients may be different from the general population that is closely related to H pylori infection.     

TNF gene polymorphisms and Helicobacter Pylori infection in gastric carcinogenesis in Chinese population

BACKGROUND AND AIMS: Helicobacter pylori (H. pylori) is a major cause of chronic gastritis and peptic ulcer disease, and a definite carcinogen for gastric adenocarcinoma. However, the underlying pathogenic mechanisms have not been fully understood although the interactions between environmental, bacterial, and multiple genetic components are likely to be involved. Tumor necrosis factor (TNF) is a key cytokine involved in H. pylori-induced gastric inflammation. The present study aimed to determine the di-allelic polymorphisms of TNF gene and their association with H. pylori infection and gastroduodenal diseases in Chinese population of Han nationality. METHODS: Two hundred and ten patients with gastroduodenal diseases (73 chronic gastritis, 78 duodenal ulcer, and 59 noncardia gastric cancer) and 264 healthy controls were genotyped by the PCR-RFLP method for TNF-alpha 308, lymphotoxin-alpha (LT-alpha) NcoI, and AspHI gene polymorphisms. H. pylori infection status was determined by a validated serological test. RESULTS: H. pylori infection was detected in 90.5% of 210 patients and 62.1% of 264 healthy controls (p < 0.0001; odds ratio [OR]= 5.793; 95%CI: 3.431-9.780). Frequency of LT-alphaNcoI A/G genotype in patients with noncardia gastric cancer with H. pylori infection was significantly higher than that in H. pylori-positive healthy controls (64.0%vs 46.0%; p= 0.0297; OR = 2.026; 95%CI: 1.080-3.803). There were no other associations between TNF-alpha 308, LT-alphaNcoI, and AspHI gene polymorphisms and H. pylori infection in gastroduodenal diseases. CONCLUSIONS: LT-alphaNcoI A/G heterozygous genotype was associated with H. pylori infection in patients with noncardia gastric cancer in Chinese Han population.     

Analysis of HLA-DRB1 alleles in Japanese patients with chronic myelogenous leukemia

To clarify the association between HLA-DRB1 alleles and chronic myelogenous leukemia (CML), the HLA-DRB1 allele frequencies in 50 Japanese patients each with b2a2 and b3a2 CML and 127 healthy Japanese individuals were examined. In the patients with b2a2 CML, the frequencies of HLA-DRB1*0405, DRB1*08032, and DRB1*1502 were low and that of HLA-DRB1*1201 was high in comparison with the healthy individuals. The frequencies of HLA-DRB1*0403, DRB1*0802, DRB1*1403, and DRB1*1405 were high, and those of HLA-DRB1*08032 and DRB1*1501 were low in the patients with b3a2 CML. The present results suggest positive and negative associations between certain HLA-DRB1 alleles and CML.     

Cytokine gene polymorphisms influence mucosal cytokine expression, gastric inflammation, and host specific colonisation during Helicobacter pylori infection

BACKGROUND AND AIMS: Recent studies linked cytokine gene polymorphisms to H pylori related gastric cancer development. The current study evaluated the role of cytokine gene polymorphisms for mucosal cytokine expression, the gastric inflammatory response, and bacterial colonisation during H pylori infection. PATIENTS AND METHODS: In 207 H pylori infected patients with chronic gastritis, polymorphisms at different loci of the interleukin (IL)-10, IL-1B, IL-1 receptor antagonist (IL-1RN), tumour necrosis factor (TNF)-A, and interferon (IFN)-G genes were genotyped by polymerase chain reaction (PCR), restriction fragment length polymorphism (RFLP) analysis, and allelic discriminating TaqMan PCR. Mucosal cytokine mRNA copy numbers were determined by real time quantitative PCR. Presence of bacterial virulence factors was investigated by cagA, vacAs1/2, and babA2 PCR. Biopsies were assessed with regard to the degrees of granulocytic/lymphocytic infiltration and the presence of intestinal metaplasia (IM) and atrophic gastritis (AG). RESULTS: Proinflammatory IL-1 polymorphisms (IL-1RN*2(+)/IL-1B-511T/-31C(+)) were associated with increased IL-1beta expression, more severe degrees of inflammation, and an increased prevalence of IM and AG. Carriers of the IL-10-1082G/-819C/-592C alleles (GCC haplotype) had higher mucosal IL-10 mRNA levels than ATA haplotype carriers and were associated with colonisation by more virulent cagA(+), vacAs1(+), and babA2(+) H pylori strains. The TNF-A-307(G/A) and IFN-G+874(A/T) polymorphisms did not influence mucosal cytokine expression or the inflammatory response to H pylori. CONCLUSIONS: Cytokine gene polymorphisms influence mucosal cytokine expression, gastric inflammation, and the long term development of precancerous lesions in H pylori infection. Host polymorphisms are associated with certain bacterial strain types, suggesting host specific colonisation or adaptation. These findings contribute to the understanding of the complex interplay between host and bacterial factors involved in the development of gastric pathology.     

Contribution of major histocompatibility complex genes to susceptibility and resistance in Helicobacter pylori related diseases.

BACKGROUND/AIM: Although there have been numerous reports concerning the virulence factors of isolates for investigating the pathogenesis of Helicobacter pylori infection, few studies have been carried out regarding the association of HLA class II genes of the host with H. pylori related diseases. Two published studies have only analysed the HLA DQ locus alone. The aim of this study was thus to determine the association of HLA class II genes (DR, DQ and DP) with H. pylori related diseases using the DNA typing method. METHODS: Fifty-eight patients with H. pylori positive gastric ulcers, 44 patients with H. pylori positive duodenal ulcers, 45 patients with H. pylori positive gastritis and 34 healthy subjects without H. pylori infection were typed for HLA class II genes by means of DNA typing with the polymerase chain reaction-sequence specific oligonucleotide probes method. RESULTS: A negative association with DRB1*1501, DQA1*01021 and DQB1*0602 alleles was noted in all three of the patient groups studied. Compared with the healthy controls, a positive association with DPA1*0201 (P= 0.032) and DPB1*0901 (P=0.005) in gastric ulcers, a positive association with DRB1*0405 (P=0.022) and DQB1*0401 (P=0.044) in duodenal ulcers, and a positive association with DPB1*0901 (P=0.016) in gastritis were observed. A haplotype analysis showed that the association of alleles with H. pylori related disease was with the haplotype rather than with either of the alleles individually. After correction for multiple comparisons, all the significant associations obtained between H. pylori related diseases and HLA class II genes disappeared. CONCLUSIONS: The interplay between host immunogenetic factors, bacterial virulence factors and environmental conditions may thus play a more important role in the outcome of H. pylori infection than immunogenetic factors alone.     

中国人群HLA-DRB1基因多态性与慢性乙型肝炎关系的Meta分析

目的:用Meta分析的方法综合评价中国人群HLA-DRB1基因多态性与慢性乙型肝炎的关系.方法:检索中国生物医学文献数据库、维普数据库和Medline数据库,依据选择标准收集所有相关的病例对照研究,应用RevMan4.2软件对符合条件的研究结果进行Meta分析.结果:符合纳入标准的共8篇文献,包含慢性乙型肝炎组501例和正常对照组855例.经综合分析:HLA-DRB1*03和HLA-DRB1*08可能为中国人群慢性乙型肝炎的易感性基因型(OR=2.44,95%CI:1.65-3.61,P<0.00001;OR=1.57,95%CI:1.08-2.28,P=0.02);HLA-DRB1*13和HLA-DRB1*15可能是我国人群慢性乙型肝炎的保护性基因型(OR=0.40,95%CI:0.21-0.79,P=0.008;OR=0.64,95%CI:0.46-0.90,P=0.01).结论:中国人群慢性乙型肝炎的发生与HLADRB1基因的多态性有关,与其他国家人群既有相同点,也有其自身特点.