Kinetics of serum HBsAg in Chinese patients with chronic HBV infection with long-term adefovir dipivoxil treatment

Background Knowledge on Hepatitis B surface antigen （HBsAg） kinetics in chronic hepatitis B （CHB） patients with longterm adefovir dipivoxil （ADV） treatment is limited.The aims of this study were to investigate HBsAg kinetics in patients with chronic hepatitis B virus （HBV） infection treated with long-term ADV and to evaluate different characteristics between patients with and without HBsAg loss.Methods We retrospectively evaluated HBsAg kinetics in 24 Chinese patients with chronic HBV infection who achieved continuous virologic suppression during ADV therapy.HBV genotype was determined at baseline.Liver biochemistry,hepatitis B e antigen status,serum HBV DNA,and HBsAg levels were measured at baseline,6 months,and once every year thereafter.Results Of these 24 patients,3,1,and 20 patients were followed up for 3,5,and 6 years,respectively.Baseline serum HBsAg level had a moderate correlation with baseline HBV DNA level （r=0.52,P=0.01）.The median rate of HBsAg reduction during the therapy period was 0.08 Ig IU·ml-1·y-1.Baseline serum HBsAg level was significantly higher than other time points （P ranges from 0.046 to 0.002）.The HBsAg reduction rate during the first year was similar to that in other years （P〉0.05）.The HBsAg reduction rate during the first year in patients with eventual HBsAg loss was significantly faster than that in patients without HBsAg loss （P=0.005）.Conclusions Serum HBsAg levels in Chinese CHB patients receiving long-term ADV demonstrated a gradual reduction.Patients with eventual HBsAg loss had a significantly faster HBsAg reduction rate during the first year than those without HBsAg loss.     

Use of Immunogold-Silver Staining in Studies on the Expression of Viral Antigens in the Liver of Individuals with Chronic Asymptomatic Hepatitis B Virus Infections

HBV antigens were immunochistochemically demonstrated with colloidal goldprobes in the liver from 204 individuals with chronic asymptomatic HBV infections.Theresults were comparaed with those from 46 patients with chronic hepatitis type B (CHB).Itwas found that the prevalence of the intrahepatic antigens had no sifnificant differencebetween chronic asymptomatic hepatitis (AsH) and chronic asymptomatic carriers (AsC).However,in the prevalence of the intrahepatic HBV antigens,a significant difference didexist between AsH and CHB which had similar liver pathology.HBsAg and HBcAg were94.2% and 46.2% in AsH,and 32.6% and 17.4% in CHB,respectively.These resultssuggest that the high prevalence of viral antigens in the liver from individuals with chronicasymptomatic HBV infection might be resulted from accumulative changes during along-term infection.     

T3098C and T53C Mutations of HBV Genotype C Is Associated with HBV Infection Progress

Objective To analyze the association between mutation（s） in preS region of HBV and hepatitis B disease progress in Chinese patients with genotype C chronic HBV infection. Methods Ninety-three patients with chronic genotype C HBV infection, including 24 asymptomatic carriers （ASC）, 26 patients with chronic hepatitis B （CHB）, 22 patients with liver cirrhosis （LC） and 21 HCC patients were investigated. Levels of HBV DNA, HBeAg, alanine aminotransferase （ALT）, asparate transaminase （AST） were measured. HBV preS region was analyzed by PCR direct sequencing. Results The prevalence of preS T3098C and T53C mutations ofgenotype C HBV was significantly higher in LC and HCC patients than ASC and CHB patients. The rate ofT3098C mutation in ASC, CHB, LC, and HCC patients were 0.00% （0/24）, 3.85% （1/26）, 9.09% （2/22）, and 30.77% （8/22）, respectively （P=0.0015）, while the rate of T53C mutation was I2.50% （3/24）, 3.85% （1/26）, 40.91% （9/22）, and 42.31% （11/26）, respectively （P=0.0012）. Conclusion The frequency of genotype C HBV preS T3098C and T53C mutations is associated with hepatitis B infection progression.     

Association between CISH polymorphisms and spontaneous clearance of hepatitis B virus in hepatitis B extracellular antigen-positive patients during immune active phase

Background Some hepatitis B extracellular antigen （HBeAg）-positive chronic hepatitis B （CHB） patients in their immune active phase can clear the virus spontaneously and enter into an inactive hepatitis B virus （HBV） carrier state,indicating a benign prognosis.In this study,the association between cytokine-inducibie SRC homology 2 domain protein （C/SH） gene polymorphisms at-292 （rs414171） and the spontaneous clearance of HBV in HBeAg-positive CHB patients in immune the active phase was investigated.Methods Seventy HBeAg-positive CHB patients in the immune active phase were followed up for 76 weeks without antiviral therapy.The alanine transaminase,aspartate transaminase,HBV DNA,HBeAg and hepatitis B extracellular antibody levels were tested regularly.At week 76,27 patients were classified into group A （HBV DNA level below 2 104 IU/ml and the value of HBeAg declined below 10％ of the baseline at week 76）,and 43 patients were classified into group B （HBV DNA level higher than 2×104 IU/ml or the value of HBeAg did not decline substantially at week 76）.CISH （rs414171） polymorphisms were also tested using the iPLEX system.Results The HBV DNA levels at week 12 were significantly greater in group B compared with group A （group A：（6.87±1.40） log10IU/ml; group B：（7.61±1.38） log10IU/ml,P=0.034） and the HBeAg values were greater in group B at week 28 compared with group A （P=0.001）.The differences in HBV DNA and HBeAg values increased between the groups over time.Sixteen patients in group A and 11 in group B were genotype AA.Those with genotype AT or TT included 11 in group A and 31 in group B （AA vs.AT and TT,odds ratio 4.10 （95％ confidence interval：1.462-11.491）,P=0.006）.Conclusion CISH gene polymorphisms at-292 （rs414171） are associated with HBV clearance in HBeAg-positive CHB patients in the immune active phase,and AA is a favorable genotype for this effect.     

Distribution specificity of polarized populations of T helper cells in patients with chronic hepatitis B virus infection

Objective: To investigate the roles of the polarized populations of T helper cells isolated from the peripheral blood mononuclear cells (PBMCs) of individuals with chronic hepatitis B virus (HBV) infection. Methods: PBMCs from patients with chronic HBV infection were separated routinely, stimulated by PMA, ionomycin and monensin, and the production of IL-4, IFN-γ and TGF-β by CD4 T cells was observed by flow cytometry(FACS). Results: The percentages of the T cells producing IFN-γ, IL-4 or TGF-β ranged from 2.3% to 18.6%, 1.1% to 8.7% and 0.7% to 7.1% respectively among CD4 cells from non-infected individuals. The majority of CD4 T cells in PBMCs from individuals with chronic HBV infection were Th0 cells. The proportion of Th1 cells in patients with active chronic hepatitis B was higher than that in patients at inactive stage of the disease (P＜0.05), indicating a significant elevation of Thl cells with the hepatic inflammation activity. The percentage of Th2 cells in individuals with HBV infection was higher than that in controls (P＜0.05),but showed no difference between different patients (P＞0.05). The percentage of Th3 cells was higher in asymptomatic HBV carriers than that in patients with chronic hepatitis B and in healthy controls (P＜0.05). Conclusions: Th1-type cytokines are related with hepatic inflammation activity of chronic hepatitis B, and Th2 cells may be associated with the persistence of HBV infection. Th3 cells cooperating with Th2 cells are likely to function as negative immunoregulator, and may be responsible for the immune tolerance state of chronic HBV infection.     

Association of-238G/A and -857C/T polymorphisms of tumor necrosis factor-alpha gene promoter region with outcomes of hepatitis B virus infection

Objectives To determine whether -238G/A and -857C/T polymorphisms of tumor necrosis factor-alpha （TNF-o0 gene promoter were associated with outcomes of hepatitis B virus infection. Methods A total of 246 HBV self-limited infected subjects and 443 chronic hepatitis B （HB） patients were recruited in this case-control study. TNF-α-238G/A and -857C/T gene promoter polymorphisms were examined by polymerase chain reaction-restriction fragment length polymorphism （PCR-RFLP）. Results The frequency of TNF-α-238 GG （90.7%） in chronic HB group was significantly lower than that （95.1%） in self-limited group （P=0.041）. The frequency of TNF-oc-857 CC （79.7%） in chronic HB patients was significantly higher than that （70.9%） in self-limited infected subjects （P=0.021）. Multiple logistic regression analysis revealed that both TNF-oc-238GA and -857CC were independently associated with chronic HB. Conclusions TNF-α promoter variants are likely to play a substantial role in influencing the outcomes of HBV infection.     

Expression of toll-like receptor 9 in peripheral blood mononuclear cells from patients with different hepatitis B and C viral loads

The aim of the present study was to investigate the expression of toll-like receptors （TLR） 9 in peripheral blood mononuclear cells （PBMC） of patients with chronic hepatitis B and C with different virus copies. The study group included 90 patients （60 with chronic hepatitis B, and 30 with chronic hepatitis C）, and 20 healthy people served as control group. The protein and mRNA levels of TLR9 were detected by using flow cytometry and real-time PCR. The serum viral copies of HBV and HCV were measured in all patients, and the correlation between HBV-DNA copies or HCV-RNA copies and the TLR9 expression was analyzed. Our results demonstrated that HBV or HCV infection led to a decreased expression of TLR9 mRNA and protein compared to the control group （P〈0.05）. The TLR9 protein and mRNA levels were negatively correlated with serum viral copies of HBV and HCV （r=-0.632, r=-0.909, P〈0.01）. It was concluded that TLR9 mRNA and protein are down-regulated in PBMC of HBV-infected or HCV-infected patients, and they are negatively correlated with serum viral copies and play an important role in detecting viral replication of HBV and HCV.     

Distribution of Hepatitis B Virus Genotypes and Its Clinical Significance in Hubei Province, China

The distribution of hepatitis B virus genotype in Hubei province and its clinical signifi- cance were investigated. HBV genotypes of 276 patients were detected by PCR-microplate sandwich hybrization-ELISA technique. The level of HBV DNA was detected by using PCR-fluorescence quantification test. Among 276 patients, there were 78 cases of HBV asymptomatic carriers, 110 cases of chronic hepatitis B (CHB), 62 cases of severe hepatitis (SH) or liver cirrhosis (LC) and 26 cases of hepatocellular carcinoma (HCC). The genotypes of HBV included C, B, mixtures (B C, B D, C D) and D, accounting for 55.8%, 25.4%, 16.7% and 2.1% respectively. The average level of HBV DNA in genotypes C, B, mixtures and D was 1.20×106, 7.81×104, 3.26×105 and 5.01×104 cop- ies/mL respectively. The ratio of SH, LC and HCC in genotype B, C and mixtures was 20%, 30% and 48% respectively. Statistical analysis revealed the percentage of genotype mixtures infection was sig- nificantly higher than that of genotype B infection. There was no significant difference in the per- centage between genotype B and genotype C or between genotype C and mixtures. The distribution of genotype B, C and mixtures in SH, LC and HCC was significantly different. The frequency of HCC was zero in patients with co-infection. Genotype D was only related with SH and LC. The in- creased ALT could be converted to categorical grades of severity. From mild, moderate to severity, the prevalence of genotype C showed an opposite trend, although no statistically significant differ- ence was observed. The HBeAg positive rate was higher in patients with genotype C infection than in those with genotype B, especially in the patients whose ages were from 31 to 40 years old. Compared with genotype B, genotype C showed a higher HBeAg positive rate in patients with SH and LC. The percentage of SH, LC and HCC was higher in patients with genotype C and mixtures infection. On the contrary, the percentage of genotype B was lower. The HBeAg positive rate in patients with genotype C infection was higher than those with genotype B infection. Genotype C and mixtures may be associated with development of severe liver disease.     

Efficacy of hepatitis B immunoglobulin in relation to the gene polymorphisms of human leukocyte Fcγ receptor III (CD16) in Chinese liver transplant patients

Background Although the use of hepatitis B immunoglobulin (HBIG) may lead to a significant reduction in recurrent hepatitis B virus (HBV) infection and improve the survival of patients who have undergone liver transplantation (LT) for hepatitis B-related diseases, the recurrence of the disease still remains at a lower level. Different clinical curative effects were observed in patients with the same HBV-related diseases and the same therapy. This study was undertaken to investigate whether the efficacy of HBIG is associated with FCGR3A gene polymorphisms in Chinese liver transplant patients.Methods Altogether 77 patients who had received liver transplantation for hepatitis B-related diseases with more than one-year survival after surgery were studied. The recurrence of HBV was characterized by the appearance of HBsAg in serum after the operation. The FCGR3A genotyping was performed using genomic DNA sequencing (ABI 3037). Single nucleotide polymorphism at nucleotide 559 was detected by Polyphred. Results Of the 77 patients, 14 were complicated with HBV recurrence post-transplant. The FCGR3A at nucleotide 559 TT was observed in 35 (45.5％) subjects, whereas TG in 31(40.3％) and GG in 11(14.3％). In the 559G carrier group (n=42, 54.5%), the risk of HBV recurrence was 9.5%, and 1- and 2-year recurrence-free survival rates were 95.2% and 88.7%, respectively. In the 559G noncarrier group (n=35, 45.5%), the risk of HBV recurrence was 28.6%, and 1- and 2-year recurrence-free survival rates were 74.3% and 69.3%, respectively. The risk of HBV recurrence and the recurrence-free survival rate were both statistically different between the 559G carrier and noncarrier groups (P<0.05).Conclusions A single nucleotide polymorphism（T/G）at position 559 of the FCGR3A gene was found in Chinese patients. The efficacy of HBIG in prophylaxis of HBV recurrence after LT is associated with the gene polymorphism, so detecting FCGR3A genotypes can be a clinical reference of the HBIG administration.     

HBV感染各阶段血清乙肝表面抗原与HBV DNA及年龄的相关性分析

目的:探析未接受抗病毒干预治疗的慢性乙型肝炎病毒(HBV)感染者各阶段的血清乙肝表面抗原(HBsAg)定量值与HBV DNA及患者年龄的关系.方法:2015年3月~2016年12月在我院就诊但未接受抗病毒治疗的498例慢性HBV感染患者的临床资料.根据临床诊断结果,将入选者分成非活动性HBsAg携带组(145例)、慢性HBV携带组(57例)、乙型肝炎E抗原(HBeAg)(+)慢性乙型肝炎(CHB)组(151例)、HBeAg(-)CHB组(65例)、HBeAg(-)乙肝肝硬化(LC-B)组(43例)和HBeAg(+)LC-B组(37例)6组.对血清HBsAg定量与血清HBV DNA及患者年龄进行相关性分析.结果:各组间的HBsAg定量值有统计学差异,其中HBeAg(-)、(+)的CHB组间HBsAg水平差异显著.除外非活动性HBsAg携带的HBV感染者的HBV DNA与血清HBsAg定量值呈显著正相关性.HBV感染者的血清HBsAg定量值与其年龄间存在显著负相关性.年龄>40岁的非活动性HBsAg携带者血清HBsAg定量值明显低于同年龄段的HBeAg(-)CHB患者.结论:HBV感染各阶段的血清HBsAg水平各不相同,该水平与患者的年龄及HBV DNA关系密切,是区分年龄超过40岁的非活动性HBsAg携带者与HBeAg(-)CHB患者的一个重要预测指标.     

前炎性细胞因子基因多态性与乙型肝炎病毒感染的关系

目的探讨肿瘤坏死因子-α（TNF-α）和白细胞介素-6（IL-6）基因单核苷酸多态性（SNP）与乙型肝炎病毒(HBV)感染的关系。方法采用基因芯片技术检测150例HBV感染患者（病例组）和不相关联的100例急性乙型肝炎病毒感染自行恢复后对照人群（对照组）中TNF-α-238G/A，-308G/A和IL-6-597G/A，-174G/C，-572G/C位点SNP。结果TNF-α-308GG基因型和G等位基因频率，病例组明显高于对照组（P＜0.01，相对危险度［OR］=6.71及P＜0.01，OR=2.22）；TNF 308AA基因型与抗病毒治疗具有协同作用（P＜0.05，OR=2.91）。未见IL -6和TNF-α其他位点的SNP与病例组有任何相关性。结论TNF-308GG基因型及其等位基因G与乙型肝炎病毒感染易感性相关，而TNF-308AA基因型则与抗病毒治疗具有协同抗病毒作用。     

乙型肝炎病毒基因型与慢性乙型病毒性肝炎及原发性肝细胞癌病理特点之间的关系

目的:调查乙型肝炎病毒（HBV）不同基因型在慢性乙型病毒性肝炎(CHB)和原发性肝细胞癌（HCC）患者中的分布;分析感染不同基因型HBV导致CHB和HCC的临床实验室结果以及肝脏病理特点之间的差异。方法:随机挑选89例CHB和86例HCC患者,采用实时荧光定量聚合酶链反应（FQ-PCR）结合双色荧光标记的TaqMan MGB探针来鉴定HBV基因型。临床实验室检查结果和病理资料摘抄自患者病案。运用统计软件SPSS10.0对结果进行统计学分析,以P<0.05为差异具有统计学意义。结果:本地区,CHB患者以感染HBV B基因型为主,占78.65%,可见B、C混合型,占3.37%;HCC患者以感染C基因型为主,占70.93%;本研究中未见B、C以外其他基因型。B、C基因型在两组患者中的分布有统计学差异（P<0.001）。感染不同基因型HBV的CHB患者间临床实验室和肝脏病理检查指标未显示出明显差异。在HCC患者中,感染C基因型患者较B基因型e抗原阳性率高（P<0.05）;感染HBV B基因型和大肝癌发生明显相关（P<0.05）;HBV基因型和肿瘤TNM分期、转移和浸润之间均未显示出相关性。结论:本地区CHB患者以感染HBV B基因型为主,C基因型和e抗原阳性是HCC发生的危险因素。针对感染C基因型HBV的患者,积极抗病毒治疗,促进e抗原血清学转换有可能降低HCC的发生率。感染HBV B基因型和大肝癌发生具有相关性,这一结论尚需进一步扩大研究验证。     

IL-10R 基因多态性与乙型肝炎病毒感染慢性化的相关性

目的：探讨 IL-10R 基因多态性与乙型肝炎病毒(HBV)感染后慢性化的相关性。方法收集501例慢性HBV 感染患者和301例急性自限性 HBV 感染患者外周血标本,两组患者的年龄、性别和地区来源均相互匹配。 Snapshot方法检测 IL-10R 两个 tag SNP(rs2228055、rs2256111)的基因型;χ2检验用于比较两组间基因型及等位基因频率分布。结果 IL-10R 基因 rs2228055、rs2256111多态等位基因和基因型频率在两组中的分布均符合 Hardy-Weinberg 平衡。 IL-10R 基因 rs2228055位点 G/ G 基因型频率(7．2%)明显低于急性自限性 HBV 感染患者(13．0%),差异有统计学意义(P<0．05);GG 基因型在 HBV 感染慢性化的风险是 AG + AA基因型的0.52倍(OR =0.52,95% CI：0．32~0．84)。结论IL-10R rs2228055位点 GG 基因型在 HBV 感染后的慢性化中发挥保护作用。     

慢性乙型肝炎病毒感染的自然病程特征

目的: 通过对单中心大样本慢性乙型肝炎病毒(hepatitis B virus, HBV)感染队列的分析, 对我国慢性HBV感染自然病程的划分提出修订建议。方法: 回顾性地纳入2014年1月至2020年10月在中国人民解放军总医院第五医学中心接受过肝组织活检的慢性HBV感染者。参考《欧洲肝病学会乙型肝炎病毒感染管理临床实践指南(2017年版)》等国内外最新版慢性乙型肝炎(chronic hepatitis B, CHB)防治指南, 将患者按乙型肝炎e抗原(hepatitis B e antigen, HBeAg)状态及肝损伤程度分为HBeAg阳性感染(免疫耐受期)、HBeAg阳性CHB(免疫清除期)、HBeAg阴性感染(免疫控制期)和HBeAg阴性CHB(再活动期)四个自然病程分期, 并重点比较了不同分期患者的人口学和实验室检验结果。两组间年龄差异采用Mann-Whitney U检验。结果: 最终纳入符合纳排标准的患者760例, 包括197例未成年(年龄 < 18岁)和563例成年感染者, 男性456例、女性304例, 纳入患者的中位年龄为29岁, (四分位间距: 16, 39岁)。上述四个自然病程分期患者分别有173、329、95和163例, 进一步比较四期患者的年龄发现: HBeAg阴性CHB的中位年龄尽管大于HBeAg阳性CHB(37岁vs. 24岁, P < 0.001), 但却小于HBeAg阴性感染者(37岁vs. 39岁, P = 0.240)。结论: 根据本研究可以推测, HBeAg阴性CHB患者并非都是由HBeAg阴性感染者进入再活动期发展而来, 也可以由仍处于持续免疫活动状态的HBeAg阳性CHB患者发生HBeAg阴转或血清学转换而来。     

慢性HBV感染者外周血T细胞亚群研究

目的分析健康人及慢性HBV感染者T细胞亚群特点,探讨宿主细胞免疫功能与慢性HBV感染临床转归的关系。方法使用流式细胞仪检测30名健康人及137例各型HBV感染者外周血T细胞亚群。结果1．对照组与各型HBV感染者的外周血T细胞亚群比较：从慢性HBV携带（CHBVC）组、慢性乙型肝炎（CHB）组到肝炎后肝硬化（PHBC）组,患者外周血CD3^＋T、CD4^＋T和CD8^＋T绝对值呈逐渐下降趋势,显著低于对照组（P〈0．05）。PHBC组CD4^＋T/CD8^＋T比值显著高于对照组和CHBVC组（尸〈0．05）。2．不同程度CHB组间外周血T细胞亚群比较：从CHB（轻度）组、CHB（重度）组到慢性重型乙型肝炎（CSUB）组,患者CD3^＋F、CD4^＋T、CD8^＋T绝对值和CD4^＋T／CD8^＋T比值逐渐下降。CSHB组CD3^＋T、CD4^＋T和CD8^＋T绝对值显著低于CHB（轻度）组（P〈0．05）。结论HBV慢性感染机制复杂,不同的临床转归患者T细胞亚群状态不同。慢性HBV感染后,肝脏损害程度严重的患者T细胞亚群功能低下及紊乱程度明显。     

TNF-α启动子基因多态性对北方汉族HBV感染者结局的影响

目的探讨TNF-α启动子区基因多态性是否与宿主感染乙型肝炎病毒（hepatitis Bvirus,HBV）后形成不同的结局相关联。方法采用病例-对照研究方法,以362例慢性乙型肝炎患者作为病例组,212例乙型肝炎病毒自限性感染者作为对照组,应用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）方法对TNF-α基因启动子区-238G/A、-857C/T、-863C/A位点进行基因分型。结果慢性乙肝组携带TNF-α-238GA基因型36例（10.0%）、-857CC基因型289例（79.8%）,自限性感染组分别为-238GA基因型11例（5.2%）、-857CC基因型149例（70.3%）,慢性乙肝组均显著高于自限性感染组（P〈0.05）。3个位点组成的单体型-238G/-857C/-863A的频率在慢性乙肝组显著高于HBV自限感染组（64.36%vs.58.26%）。单体型-238G/-857T/-863A在慢性乙肝组显著低于HBV自限感染组（7.32%vs.12.26%）。结论 TNF-α启动子区基因多态性可能与宿主感染HBV后形成慢性化结局相关联。     

乙型肝炎大蛋白在慢性乙型肝炎抗病毒疗效评估中的意义

目的:评估血清乙型肝炎大蛋白(HBV-LP)在慢性乙型肝炎(CHB)患者抗病毒疗效评估中的临床价值.方法:120例CHB患者经恩替卡韦治疗96周.分别于用药0、12、24、36、48、72和96周检测HBV-LP和HBV DNA.结果:CHB患者中治疗前HBV-LP与HBV DNA阳性率差异无统计学意义(P>0.05),在抗病毒治疗中,HBV-LP与HBV DNA降低呈一致趋势(P<0.01),HBV-LP含量与HBV DNA拷贝数呈明显正相关关系(P<0.01).结论:血清HBV-LP检测为抗病毒疗效评估提供有效参考指标.     

慢性乙型肝炎患者DC-SIGN启动区变异分析

目的:了解慢性乙型肝炎(chronic hepatitis B,CHB)患者与既往乙型肝炎病毒(hepatitis B virus,HBV)感染者体内树突状细胞特异性细胞间黏附分子-3结合非整合素因子(dendritic cell-specific intercellular adhension molecule-3-...     

TTV与HBV混合感染的研究

目的：探讨输血传播病毒（TTV）与HBV混合感染对HBV复制的影响。方法：应用微板核酸杂交-ELISA法检测175例HBV患者血清中的TTV-DNA，ELISA法进行乙型肝炎相关病毒标志物检测。结果：175例HBV患者中TTV-DNA阳性30例（17．1％），其中无症状携带者、慢性肝炎、活动性肝硬化、原发性肝癌患者中的TTV-DNA检出率分别为3／21（14．3％）、13／76（17．1％）、8／50（16．0％）、6／28（21．4％），各组间差异无统计学意义。在慢性肝炎、活动性肝硬化、原发性肝癌患者中，TTV-DNA阳性组与阴性组各项肝功能指标改变相似。HBV和TTV混合感染组中HBeAg和抗-HBcIgM阳性率低于单纯HBV感染组（P〈0．01和P〈0．05），而血清抗-HBe阳性率则高于单纯HBV感染组（P〈0．01）。结论：TTV的混合感染似乎并不影响HBV所致的肝脏病变程度，对HBV的复制可能有一定的抑制作用。