乙型肝炎病毒前S1蛋白抗原检测的临床意义

目的通过分析HBV前S1（PreS1）蛋白抗原和血清标志物之间的关系,探讨PreS1蛋白抗原检测在临床上的应用价值。 方法收集382例HBV患者血清样本,采用ELISA法检测HBVPreS1蛋白抗原和血清标志物,采用荧光定量PCR法检测HBV—DNA,并比较所有检测结果。 结果382例HBV患者血清样本PreS1蛋白抗原和HBV-DNA的检出率分别为33．8％和40．8％;其中HBeAg阳性的144例中,PreS1抗原阳性为112例,HBV-DNA阳性为134例,阳性率分别为77．8％和93．1％;HBeAg阴性的102例中,PreS1抗原阳性为17例,HBV-DNA阳性为22例,阳性率分别为7．1％和9．2％。HBV-DNA检出率稍高于PreS1抗原的检出率,但两者间检出率差异均无统计学意义（P〉0．05）。 结论HBVPreS1蛋白可反映HBV复制的情况,与HBV-DNA结果有较好的一致性,可作为临床上HBV感染诊断或监测的指标。     

132例乳汁中HBV—DNAPCR 检测结果分析

用PCR技术对132例产妇乳汁作了HBV－DNA检测．其阳性率为53．8％。其中120例孕期乙肝血清学指标一项以上阳性和12例全阴性的产后5天之内的产妇乳汁中HBV－DNA阳性率分别为57．5％、16．7％，两组间阳性率有显著性差异（P＜0．005）：各项乙肝血清学指标阳性组间乳汁HBV－DNA阳性率无统计学差异（P＞0．05）。结果证实乳汁确实是HBV排泄的重要途径之一，孕期乙肝血清学指标阳性的母乳排毒率显著高于对照组，本文中对母乳中检出HBV-DNA的产妇的授乳问题，孕期乙肝血清学指标全阴性产妇通过乳汁感染新生儿的可能性和乳汁中HBV－DNA的检测方法作了讨论。     

检测乙型肝炎病毒前S1抗原的临床价值

目的 通过检测乙肝病毒前S1抗原、乙肝病毒DNA以及乙肝两对半（HRV M）,探讨乙肝病毒前S1抗原用于临床诊断乙型肝炎的意义.方法 共检测276例乙肝患者血清标本,乙肝病毒前S1抗原和乙肝两对半采用酶联免疫方法进行检测,采用实时荧光定量PCR方法检测HBVDNA.结果 血清中HBeAg、前S1抗原和HBV DNA的阳性率分别为56.5％、73.9％和76.0％;HBeAg阳性的156份标本中,HBV DNA的阳性率（94.8％）与前S1的阳性率（92.3％）之间差异没有统计学意义,HBeAg阴性的120份标本中前S1的阳性率与HBV DNA差异无统计学意义;HBV DNA高拷贝组[1.0×（105～108）、1.0×（103～105）]前S1抗原的阳性率明显高于低拷贝组（＜1.0×103）结论 前S1抗原、HBeAg与HBV DNA符合率较高,对无条件检测HBV DNA而HBe Ag阴性的血清,检测前S1抗原可起到提示病毒是否复制的补充作用.     

监测乙肝病毒宫内感染的前S1蛋白测定

应用前S1蛋白双抗体夹心ELISA法测定269例足月分娩的母血与新生儿脐血的前S1蛋白，并与酶免法测定乙肝血清学标志的PCR法测定HBV-DNA相对照，以探讨检测母血、脐血前S1蛋白来评估HBV宫内感染的可能性。结果是：49例母血HBV抗原阳性者中检出前＆蛋白与HBV-DNA阳性者分别有19例与18例，其新生儿脐血中检出HBV抗原、前S1蛋白与HBV-DNA阳性者分别有9例、5例与6例，脐血中三种乙肝标志物阳性检出率无明显差异（P＞005）。49例母血HBV抗原阳性者中，有12例是HBsAg（＋）、HBeAg（＋）和HBcAg（＋）的，其孕妇血中前S1蛋白与HBV-DNA阳性者各10例，其新生儿脐血中检出HBV抗原、前SI蛋白与HBV-DNA阳性者分别有6例、5例与6例，脐血中三种乙肝标志物阳性检出率呈平行关系。提示测定母血、脐血前1S蛋白与检测HBeAg及HBV-DNA一样有助于判断母体内HBV复制与HBV宫内感染。     

同步检测183例血清9项HBV标志物结果分析

探讨检测9项乙肝病毒（HBV）标志物对判断HBV复制及活动性的意义,以指导临床抗病毒治疗,选183例HBV感染者,同步检测其乙肝5项以及Pre-S2,PHSA-R,HB5Ag-IgM,HBV-DNA.HBV-DNA,Pre-S2,PHSA-R,HBsAg-IgM在“大三阳”中检出率分别为86．36％,96．97％,93．94％,95．45％;在小三阳中检出率分别为15．79％,44．74％,48．68％,HBeAg及HBsAg阴性时仍能检出HBV－DNA,HBV－DNA,Pre-S2,PHSA-R,HBsAg-IgM与HBeAg都可作为HBV复制指标。Pre-S2,PHSA-R,HBsAg-IgM同属乙肝病毒表面蛋白,其复制能力及传染性与滴度呈正相关,HBeAg及HBsAg阴性时仍可能有病毒复制。     

血清乙型肝炎病毒表面抗原大蛋白检测的临床意义与评价

目的通过对乙型病毒性肝炎(乙肝)患者血清中乙肝表面抗原大蛋白(LHBs)、HBV DNA、乙肝前S1(PreS1)及传统的乙肝两对半的检测与平行比较研究,探讨LHBs用于临床诊断乙型肝炎的意义。方法检测385例乙肝患者的血清标本,LHBs、PreS1及乙肝两对半采用酶联免疫方法,HBV DNA检测采用实时荧光定量PCR法。结果307份HBV DNA阳性标本中LHBs的阳性率(86.97%)明显高于PreS1的阳性率(49.5%),两者差异有统计学意义(P<0.05);LHBs含量与HBV DNA拷贝数呈正相关性,r=0.935;HBeAg阴性标本中LHBs的检出率为76.92%,比较HBV DNA的检出率(67.95%)无统计学意义;PreS1的检出率(45.73%)则明显低于LHBs和HBV DNA。结论乙肝患者血清中LHBs表达与HBV DNA拷贝数呈正相关,两者的检出率与符合率均高于PreS1,LHBs检测可以用于反映乙肝患者病毒复制的血清免疫学指标。     

HBV-DNA阳性育龄妇女HBV血清标志物、前S1抗原的检测分析

目的：探讨HBV—DNA阳性育龄妇女病毒复制与HBV标志物及前S1抗原的关系。方法：对1643例慢性乙型肝炎育龄妇女采用荧光定量PCR法检测血清HBV—DNA,酶联免疫吸附法（ELISA）检测HBV标志物和前S1抗原。结果：HBV—DNA阳性育龄妇女432例。其中,HBsAg阴性者占19．44％,前S1抗原总阳性率55．09％,且随着HBV—DNA载量增加,前S1抗原阳性率也升高。结论：采用HBV—DNA、HBV标志物、前S1抗原联检,才能更准确提供育龄妇女HBV感染诊疗依据,有效控制HBV感染率。     

检测乙型肝炎病毒表面抗原大蛋白的临床意义

目的检测乙肝患者血清中乙肝两对半（HBVM）、乙型肝炎病毒表面抗原大蛋白（HBV—LP）以及HBVDNA，比较在不同乙肝两对半模式的患者中HBV．LP与HBVDNA的检出率，探讨乙型肝炎病毒表面抗原大蛋白（HBV—LP）用于乙肝患者临床诊断的意义。方法采用酶联免疫吸附实验（ELISA）检测HBV．LP和乙肝两对半，采用荧光定量PCR方法对患者HBVDNA进行检测。结果（1）相同乙肝模式患者血清中HBV．LP与HBVDNA检出率差异无统计学意义；（2）143例小三阳乙肝患者血清中HBV．LP与HBVDNA阳性率差异无统计学意义，二者的检出一致率为82．52％[（65＋53）／143]；（3）HBV—LP吸光度（A值）与HBVDNA呈正相关关系（r=0．983）。结论乙型肝炎病毒表面抗原大蛋白与HBVDNA有良好的正相关关系，在HBeAg阴性的乙肝患者中乙肝病毒表面抗原大蛋白（HBV—LP）与HBVDNA有较高检出一致率，HBV—LP用于临床反映乙肝病毒复制水平，特别是HBeAg阴性乙肝患者体内病毒复制情况有重要的意义。     

乙型肝炎病毒前S1抗原检测的临床意义

探讨乙型肝炎病毒前s1抗原（Pre-S1）检测在乙型肝炎病毒诊断中的临床意义。采用酶联免疫吸附试验（ELISA）和荧光定量聚合酶链反应技术（fluorescenee quantitative PCR,FQ-PCR）对650份HBV-M不同阳性模式及40份HBV—M全阴性模式血清标本进行乙型肝炎病毒Pre-S1、乙肝五项和HBV—DNA检测,并对三种检测结果进行统计学分析。在650份HBV—M不同阳性模式标本中,在119份大三阳标本中Pre—S1阳性检出率92．4％,HBV-DNA阳性检出率100％,在186份小三阳标本中Pre—SI阳性检出率42．5％,HBV—DNA阳性检出率63．4％,在21例HBsAg（＋）和HBcAb（＋）阳性组中Pres1阳性检出率47．6％,HBV．DNA阳性检出率66．7％;在297例HBsAb（＋）标本中Pre—S1阳性检出率0．4％,HBV-DNA阳性检出率0％,在268例HBV—DNA阳性的标本中Pre-S1阳性检出率79．3％。在40份HBV—M全阴模式中Pre-S1阳性检出率0％,HBV-DNA阳性检出率0％。Pre—S1在大三阳、小三阳及HBV-DNA阳性组阳性检出率明显高于阴性组（P〈0．01）,Pre—S1检测可补充和完善乙肝“两对半”检测的不足,尤其对HBeAg阴性或变异的HBV感染者能更好的反映病毒的复制状态和传染性。     

282例HBV感染无症状表面抗原阳性者血清ALT与乙肝前S1抗原的检测

目的了解乙型肝炎病毒（HBV）感染无症状表面抗原阳性者血清ALT和乙肝前S1抗原的状况。方法用ELISA法检测血清标志物（HBsAg、抗HBs、HBeAg、抗HBe、抗HBc）和乙肝前S1抗原,用日立7060全自动生化分析仪检测血清ALT。结果 282例无症状表面抗原阳性者,乙肝前S1抗原总检出率为37.6%;ALT升高87例,占总人数的30.8%;ALT升高的87例患者中前S1抗原检出率为67.8%;ALT正常的195例患者中前S1抗原检出率为24.1%,两组比较差异有统计学意义（P〈0.01）。在282例无症状表面抗原阳性者中,HBeAg阳性组,乙肝前S1抗原检出率为73.9%,ALT异常阳性率为52.2%;HBeAg阴性组,乙肝前S1抗原检出率为31.0%,ALT异常阳性率为25.6%,两组比较差异有统计学意义（P〈0.01）。结论乙肝病毒携带者不能完全排除ALT正常情况下的病毒复制;血清中出现HBeAb并不一定表示HBV复制停止。因此,对于无症状表面抗原阳性者应进行定期复查,监测其乙肝血清标志物、ALT和前S1抗原。     

西藏墨脱县1262名中小学生乙肝标志物检测结果分析

目的了解墨脱县1262名中小学生乙型肝炎病毒（HBV）感染状况,为乙肝防治工作的开展提供依据。方法用酶联免疫方法检测HBsAg、抗-HBs、HBeAg、抗-HBe和抗-HBc五项乙肝标志物,Excel统计软件对检测结果进行统计分析。结果1262名中小学生乙肝标志物五项全阴者有886人,占70.2%;仅有303名中小学生有保护性的乙肝表面抗体,占24.0%;39名学生HBsAg阳性,阳性率3.1%。HBsAg阳性39名学生中,HBsAg、HBeAg和抗-HBc三项阳性的学生有27名,占69.2%。结论1262名中小学生中乙肝标志物五项全阴者比例较高,有保护性抗体的比例较低,存在接触感染乙肝病毒的较大风险,因此,加强西藏墨脱县中小学生乙肝疫苗接种工作刻不容缓。     

HBV-前S_2抗原和抗体在乙型肝炎中的临床意义

本文用酶免疫法检测了HBV-前S_2抗原和抗体在乙型肝炎患者血清中的变动。结果表明,在急性HBV感染时,病程一月内前S_2抗原的阳性效为86.9％,抗前S_2抗体的阳性率为27.3％;在病程1～6个月间,前S_2抗原的阳性率降至34.7％,抗前S_2抗体的阳性率升至60％。前S_2抗原在HBeAg和HBV-DNA阳性血清中的检出率(84.2％)明显高于在HBeAg和HBV-DNA阴性血清中的检出率(20.0％),而抗前S_2抗体则相反。在慢性活动性肝炎时,前S_2抗原的检出率为80％,在慢性迁延性肝炎时的检出率为82.6％,抗前S_2抗体在慢性乙型肝炎病人血清中的检出率均很低。本文结果提示前S_2抗原的表达与HBV病毒的复制相关,而抗前S_2抗体的出现可作为预示HBV感染恢复的指标。     

Molecular analysis of the hepatitis B virus presurface and surface gene in patients from eastern China with occult hepatitis B

This study was designed to detect and analyze mutations that occur within the presurface and surface (pre‐S/S) gene of HBV in patients with occult hepatitis B, and determine their relationship to that disorder. Among 254 HBsAg negative samples of blood collected in eastern China, 183 were positive for anti‐HBc alone, 61 were positive for anti‐HBe alone, and 10 samples were positive for HBeAg. Within this group, 15 samples were found to be HBV DNA positive by real‐time PCR and were designated Group I. A control group of 28 HBsAg positive samples were chosen at random from patients with chronic hepatitis B and designated Group II. The HBV pre‐S/S gene was amplified by PCR and subjected to sequencing analysis. Occult hepatitis B was found in 1.6% of the patients with anti‐HBc alone and in 3.3% of those with anti‐HBe alone. Occult hepatitis B also was found in all HBsAg negative but HBeAg positive samples. Sequencing analysis showed a significant correlation between point mutations within the “a” determinant and occult hepatitis B (P < 0.0001), and a close relationship between pre‐S deletion mutations and occult hepatitis B (P = 0.06). There were unique amino acid mutations at the G145 position other than G145R. The HBV DNA levels in patients with occult hepatitis B were significantly lower than those found in the control group. The “a” determinant mutations and pre‐S deletions may play important roles in occult hepatitis B by affecting the expression, synthesis and secretion of the S protein and by impeding viral release and replication. J. Med. Virol. 85: 979–986, 2013. © 2013 Wiley Periodicals, Inc.     

慢乙肝患者的乙肝五项、HBV-DNA和甲状腺参数的结果分析

目的 探讨慢乙肝患者的乙肝五项(HbsAg、HbsAb、HbeAg、HbeAb、HbcAb)、乙肝DNA(HBV-DNA)和甲状腺参数(TSH、FT3、TT3、FT4、TT4)的临床意义.方法 收集在本院2014年6月至2014年12月住院的慢乙肝患者106例,其中慢乙肝轻度患者29例(慢乙肝轻度组)、慢乙肝中度患者57例(慢乙肝中度组)、慢乙肝重度患者20例(慢乙肝重度组)和正常体检者为30例(对照组).检测其血清的HbsAg、HbsAb、HbeAg、HbeAb、HbcAb 、HBV-DNA、TSH、FT3、TT3、FT4、TT4,并进行统计分析.结果 (1)慢乙肝组的TT3、FT4、TT4与对照组相比,差异明显有统计学意义(P<0.001);TSH、FT3无明显变化(P>0.05).(2)FT4、TT4在慢乙肝轻度组、慢乙肝中度组、慢乙肝重度组和对照组中比较,差异具有统计学意义(P<0.001);慢乙肝重度组的TT3与轻度组和中度组比较差异有统计学意义(P<0.05).FT4在慢乙肝随病情的轻重呈现降低的趋势,慢乙肝重度组和中度组的FT4水平均低于对照组(P<0.05).TT4在慢乙肝加重呈现升高的趋势,但是升高不明显;慢乙肝三组和对照组相比,差异有统计学意义(P<0.05).(3)慢乙肝组中,TT3在大三阳组和小三阳组差异有统计学意义(P<0.05).在DNA≤20IU/mL,大、小三阳两组中的所有检测项目差异不具有统计学意义(P>0.05);在DNA>20 IU/mL中,大、小三阳两组中的TT3差异具有统计学意义(P <0.05),其余的项目差异不具有统计学意义(P>0.05).进一步分析TT3在慢乙肝中度组中的表达,提示在DNA阳性(>20 IU/mL)且大三阳的慢乙肝中度患者的TT3水平明显高于小三阳(P <0.05).结论 慢乙肝患者血清TT3和FT4水平随病情的加重呈现明显降低,与大小三阳无直接关系.DNA阳性(>20 IU/mL)的大三阳慢乙肝中度患者的血清TT3水平高于DNA阳性的小三阳组.通过检测和监测慢乙肝中度患者的甲状腺激素水平,有助于评估患者的病情和预后判断.     

Correlation between HBV DNA detection by polymerase chain reaction and Pre-S1 antigenemia in symptomatic and asymptomatic hepatitis B virus infections

The presence of hepatitis B virus (HBV) genome in sera from 73 symptomatic and asymptomatic HBsAg carriers was studied by the polymerase chain reaction (PCR) with primers specific for the S and C regions. Pre-S proteins of the HBV envelope were detected in serum by a specific monoclonal antibody in a double immunoradiometric assay. Out of twenty-five symptomatic patients with chronic active hepatitis (14 with HBeAg and 11 with anti-HBe), all were positive for HBV DNA by PCR, while 14/14 HBeAg and 2/11 (18%) of the anti-HBe patients were positive by dot blot hybridization. All but one anti-HBe patient (96%) carried Pre-S1 proteins. Among the asymptomatic HBsAg carriers, HBV DNA was detected by PCR in 14/14 (100%) HBeAg positive patients and in 25/34 (73%) anti-HBe positive patients. Pre-S1 proteins were found, respectively, in 14/14 (100%) and 11/22 (50%) of the same cases tested in parallel. The 20 healthy blood donors devoid of HBV markers and with normal transaminases tested were found negative for HBV DNA using PCR. Out of 12 patients who recovered from acute hepatitis B, all were found negative by PCR analysis after a mean follow up of 1 year after seroconversion to anti-HBs. When serial samples from 2 patients (one with acute hepatitis B, the other with chronic hepatitis B) were tested for the presence of HBV DNA and of Pre-S1 proteins, both markers showed parallel development.(ABSTRACT TRUNCATED AT 250 WORDS)     

广州地区汉族人乙型肝炎病毒感染与HLA-DPB1基因的相关性研究

目的：探讨人类白细胞抗原（HLA）的DPB1基因与广州地区汉族人乙型肝炎病毒（HBV）感染的相关性。方法：采用测序分型技术（SBT）对广州地区汉族人中58例乙型肝炎患者和75例正常个体的HLA-DPB1基因位点进行了基因分型。结果：两者的HLA-DPB1等位基因表现型频率差异均无显著性。结论：本研究检验的广州地区部分汉族人的HBV感染与HLA-DPB1基因无显著相关性。     

乙肝患者HBV感染指标、病毒复制水平与基因分型的关系分析

目的 探讨HBV感染指标、病毒复制水平和基因型之间的关联及对乙肝患者诊断和预后的意义.方法 采用酶联免疫吸附试验(ELISA)检测样本的HBV PreS1-Ag、Anti-HBc-IgM和HBV两对半;荧光定量PCR法测HBV DNA水平;巢氏PCR法扩增S片段、测序并对比分析判定基因型,联合分析指标的关联.结果 收集河南地区急、慢性乙肝患者样本355例.模式Ⅰ(HBeAg阳性)的PreS1-Ag阳性率为80.2％、HBV DNA阳性率为73.7％,显著高于其他模式;PreS1-Ag、Anti-HBc-IgM阳性者的ALT、AST异常率显著高于阴性组;HBV基因型结果为B型4例(2.9％),C型76例(55.9％),D型56例(41.2％),C型患者的HBeAg和HBV DNA阳性率显著高于B型和D型.结论 PreS1-Ag和Anti-HBc-IgM对乙肝早期诊断、病毒复制监测及预后评估有重要意义;河南地区乙肝患者的HBV基因型以C型和D型为主,C型的HBeAg和HBV DNA阳性率显著高于B和D型.     

Occult hepatitis B virus infection in HBs antigen-negative hepatocellular carcinoma in a Japanese population: involvement of HBx and p53

Hepatitis B virus (HBV) genome was reported to be detected in serum or liver tissues in hepatocellular carcinoma (HCC) patients negative for hepatitis B surface antigen (HBsAg). Hepatitis B x (HBx) and p53 protein were reported to play an important role in HBV-related hepatocarcinogenesis. To clarify latent HBV infection in HBsAg- and anti-hepatitis C virus (anti-HCV)-negative HCC in a Japanese population and involvement of HBx and p53 protein in these patients, we performed the sensitive and specific nested polymerase chain reaction (PCR) and immunohistochemical analysis. Of 1,024 HCC patients we saw between 1974 and 1998, 66 (6.4%) were negative for HBsAg and anti-HCV. Serum DNA was amplified by nested PCR by using specific primers of surface (S), core (C) and X regions in 26 patients negative for HBsAg and anti-HCV. Eighteen (69%) patients were positive for either S, C, or X region and the results of PCR were confirmed by Southern blotting. Of 18 PCR-positive patients, 3 were positive for anti-HBs and 9 were positive for anti-HBc, however, one was negative for any HBV markers. In HBsAg-negative and PCR-positive patients, the positive rates of expression of HBx and p53 were 8/13 (62%) and 7/13 (54%), being comparable to those in HBsAg-positive HCC patients. The results of the present study suggest that high prevalence of HBV infection is observed in HBsAg-negative HCC in a Japanese population and expression of HBx and p53 is consistent with a role, in these patients, for the transforming ability of these proteins.