简介:AIM:ToanalyzetheassociationbetweenHelicobacterspp.andsomecommongutbacteriainpatientswithcholecystitis.METHODS:Anested-polymerasechainreaction(PCR),specificto16SrRNAofHelicobacterspp.wasperformedonparaffin-embeddedgallbladdersamplesof100cholecystitisand102controlcases.ThesampleswerealsoanalyzedforsomecommongutbacteriabyPCR.Positivesamplesweresequencedforspeciesidentification.RESULTS:HelicobacterDNAwasfoundinsevenoutof100casesofacuteandchroniccholecystitis.SequenceanalysisdisplayedHelicobacterpullorum(H.pullorum)insixcasesandHelicobacterpyloriinone;H.pullorumwasonlyfoundincaseswithmetaplasia.Controlsam-pleswerenegativeforHelicobacterspp.andsomecommongutbacteria.Therewasasignificantdifference(P=0.007)betweencholecystitisandcontrolsamplesforHelicobacterDNA.CONCLUSION:ApossiblerelationshipwasdetectedbetweenHelicobacterDNAandcholecystitis.Furtherserologicalandimmunohistochemicalstudiesareneededtosupportthesedata.
简介:肝炎B病毒(HBV)感染是使世界范围的3.5亿个人担心的一个全球公共健康问题。有长期的肝炎B(CHB)的个人在开发肝肝硬化,肝的补偿不全和hepatocellular癌的增加的风险。为了维持,无法发现的病毒的负担减少长期的感染复杂并发症。没有治疗,根除HBV感染。当前的药是昂贵的,与不利事件被联系,并且具有有限功效。当前的指南试着标准化临床的实践。不过,争吵与CHB关于无征状的病人的管理留下,并且什么是肝炎Be抗原(HBeAg)与正常丙氨酸aminotransferase积极是病毒的负担的截止价值区分HBeAg否定的CHB病人和不活跃的搬运人。我们详细讨论DNA水平为什么独自不是足够的开始CHB的治疗。
简介:AIM:TOinvestigatetheimmunogenicityofcandidateDNAvaccineagainsthepatitisCvirus(HCV)deliveredbytwoplasmidsexpressingHCVenvelopeprotein1(El)andenvelopeprotein2(E2)antigensrespectivelyandtostudytheeffectofCpGadjuvantonthiscandidatevaccine.METHODS:RecombinantplasmJdsexpressingHCVEIandE2antigensrespectivelywereusedtosimultaneouslyinoculatemicewithorwithoutCpGadjuvant.AntiserawerethencollectedandtJtersofantJ-HCVantibodieswereanalyzedbyELISA.Onemonthafterthelastinjection,animalsweresacrificedtopreparesingle-cellsuspensionofsplenocytes.ThesecellsweresubjectedtoHCVantigenspecificproliferaionassaysandcytokinesecretionassaystoevaluatethecellularimmuneresponsesofthevaccinatedanimals.RESULTS:AntibodyresponsestoHCVEIandE2antigensweredetectedinvaccinatedanimals.AnimalsreceivingCpGadjuvanthadslightlylowertitersofanti-HCVantibodiesinthesera,whilethesplenocytesfromtheseanimalsshowedhigherHCV-antigenspecificproliferation.Analysisofcytokinesecretionfromthesplenocyteswasconsistentwiththeaboveresults.Whilenoantigen-specificIL-4secretionwasdetectedforallvaccinatedanimals,HCVantigen-specificINF-γ,secretionwasdetectedforthesplenocytesofvaccinatedanimals.CpGadjuvantenhancedthesecretionofINF-γ,butdidnotchangetheprofileofIL-4secretion.CONCLUSION:VaccinationofmicewithplasmidsencodingHCVE1andE2antigensinduceshumoralandcellularimmuneresponses.CpGadjuvantsignificantlyenhancesthecellularimmuneresponse.
简介:AIM:NitrativeandoxidativeDNAdamagesuchas8-nitroguanineand8-oxo-7,8-dihydro-2'-deoxyguanosine(8-oxodG)formationhasbeenimplicatedininitiationand/orpromotionofinflammation-mediatedcarcinogenesis.TheaimofthisstudyistoclarifywhethertheseDNAlesionsparticipateintheprogressionofintrahepaticcholangiocarcinoma.METHODS:Weinvestigatedtherelationoftheformationof8-nitroguanineand8-oxodGandtheexpressionofhypoxia-induciblefactor-1α(HIF-1α)withtumorinvasionin37patientswithintra-hepaticcholangiocarcinoma.RESULTS:Immunohistochemicalanalysesrevealedthat8-nitroguanineand8-oxodGformationoccurredtoamuchgreaterextentincanceroustissuesthaninnon-canceroustissues.HIF-1αcouldbedetectedincanceroustissuesinallpatients,suggestinglowoxygentensioninthetumors.HIF-1αexpressionwascorrelatedwithinduciblenitricoxidesynthase(iNOS)expression(r=0.369andP=0.025)and8-oxodGformation(r=0.398andP=0.015).DoubleimmunofluorescencestudyrevealedthatiNOSandHIF-1αco-localizedincanceroustissues.Notably,theformationof8-oxodGwascorrelatedsignificantlywithlymphaticinvasion(r=0.386andP=0.018).Moreover,8-nitroguanineand8-oxodGinnon-canceroustissueswereassociatedsignificantlywithneuralinvasion(P=0.042andP=0.026,respectively).TheseresultssuggestthatreciprocalactivationbetweenHIF-1αandiNOSmediatespersistentDNAdamage,whichinducestumorinvasivenessviamutations,resultinginpoorprognosis.CONCLUSION:Theformationof8-nitroguanineand8-oxodGplaysanimportantroleinmultiplestepsofgeneticchangesleadingtotumorprogression,includinginvasiveness.
简介:AIM:Toanalyzethemismatchrepair(MMR)statusandtheARID1Aexpressionaswellastheirclinicopathologicalsignificanceingastricadenocarcinomas.METHODS:WeexaminedtheexpressionsofMMRproteinsandARID1Abyimmunohistochemistryinconsecutive489primarygastricadenocarcinomas.Theresultswerefurthercorrelatedwithclinicopathologicalvariables.RESULTS:ThelossofanyMMRproteinexpression,indicativeofMMRdeficiency,wasobservedin38cases(7.8%)andwassignificantlyassociatedwithanolderage(68.6±9.2vs60.4±11.7,P<0.001),afemalesex(55.3%vs31.3%,P=0.004),anantrallocation(44.7%vs25.7%,P=0.021),andadifferentiatedhistology(57.9%vs39.7%,P=0.023).AbnormalARID1Aexpression,includingreducedorlossofARID1Aexpression,wasobservedin109cases(22.3%)andwassignificantlycorrelatedwithlymphaticinvasion(80.7%vs69.5%,P=0.022)andlymphnodemetastasis(83.5%vs73.7%,P=0.042).ThetumorswithabnormalARID1AexpressionmorefrequentlyindicatedMMRdeficiency(47.4%vs20.2%,P<0.001).AmultivariateanalysisidentifiedabnormalARID1Aexpressionasanindependentpoorprognosticfactor(HR=1.36,95%CI:1.01-1.84;P=0.040).CONCLUSION:OurobservationssuggestthattheAIRD1Ainactivationisassociatedwithlymphaticinvasion,lymphnodemetastasis,poorprognosis,andMMRdeficiencyingastricadenocarcinomas.
简介:目的观察HBsAg阳性患者血清标记物与HBVDNA水平间的关系.方法用时间分辩免疫荧光分析法测定HBV感染者的血清标记物,荧光定量PCR法测定HBVDNA含量.结果204例HBV感染者中,血清标记物出现三种组合,组合Ⅰ为HBsAg(+)、HBeAg(+)、抗-HBc(+)104例,血清HBVDNA阳性率为86.5%;组合Ⅱ为HBsAg(+)、抗-HBe(+)、抗-HBc(+)80例,血清HBVDNA阳性率为32.5%;组合Ⅲ为HBsAg(+)、抗-HBc(+)20例,血清HBVDNA含量均低于检测低限(<1×103拷贝/毫升).结论HBV感染者血清HBVDNA水平更能反映病毒复制的程度,应努力开展此项检测.
简介:DNA/miRNA基因甲基化作为一种新的结直肠癌非侵入性筛查标志物,被证实具有较高的敏感性和特异性,目前有大量有关检测血液、粪便中DNA/miRNA基因异常甲基化筛查结直肠癌的研究,但仅有个别商业化的甲基化基因试剂盒小规模应用于临床实践。本人将对目前有关检测血液/粪便中DNA/miRNA基因异常甲基化筛查结直肠癌的国内外研究进行综述,总结其潜在的临床价值。
简介:目的探讨乙型肝炎患者血清学标志(HBVM)与HBVDNA的关系.方法对257例乙型肝炎患者同时检测HBVM与HBVDNA.HBVM检测用ELISA法,HBVDNA检测用PCR法.根据不同检测结果进行对比分析.结果在HBsAg+HBeAg+HBcAb阳性的血清中HBVDNA阳性率和含量最高,血清HBeAg与HBVDNA含量密切相关,但部分HBeAg阴性或抗-HBe阳性患者也有较高的HBVDNA阳性率及含量.结论PCR定量检测HBVDNA含量更有助于判断体内HBV复制的情况及传染性强弱,在临床上有重要意义.
简介:目的探讨长期服用阿德福韦酯对CHB患者外周血单个核细胞(PBMCs)线粒体的可能损伤。方法本研究包括18例服用阿德福韦酯2年、25例服用3年和22例未服用阿德福韦酯的CHB患者;采用实时定量PCR法检测各组患者PBMCs中线粒体DNA(mtDNA)含量(mtDNA/nDMA);采用ELISA法检测血浆丙二醛(MDA)、F2一isoprostanes含量;采用分光光度法检测血浆总抗氧化能力(TAOC)。结果2年组患者mtDNA含量为0.6±0.4copies/cell,3年组为0.8±0.5copies/cell,均显著低于对照组(1.4±1.2copies/cell,P均〈0.05);2年组F2一iso—prostanes含量为1.5±0.8ng/ml,3年组为2.2士1.3ng/ml,显著低于对照组(3.7±2.7ng/ml,P均〈0.05);2年组TAOC含量为3.0±1.1单位/毫升,3年组为2.3±1.4单位/毫升,显著低于对照组(4.3±1.8单位/毫升,P均〈0.05)。3组问MDA含量无统计学差异(F=2.404,P〉0.05)。结论长期应用阿德福韦酯治疗慢性乙型肝炎,对PBMCs中mtDNA水平有一定的影响,其意义还有待探讨。
简介:探讨慢性乙型肝炎轻度患者血清HBVDNA载量与肝组织病理学变化的关系。方法根据血清HBeAg状态将310例慢性乙型肝炎轻度患者分为HBeAg阳性和HBeAg阴性,应用荧光定量PCR技术检测血清HBVDNA水平,常规进行肝活检术和病理学观察,分析血清HBVDNA载量与肝组织病理学变化的关系。结果224例HBeAg阳性患者肝组织炎症程度以G0(42.0%)为主,纤维化程度以S0(58.0%)为主;86例HBeAg阴性患者炎症程度以G0(29.1%)、G1(30.2%)、G2(34.9%)为主,纤维化程度以S0(51.2%)为主;HBeAg阳性患者血清HBVDNA水平与肝组织炎症程度无明显相关(r=-0.098,P>0.05),与纤维化分期间存在负相关关系(r=-0.309,P<0.01);HBeAg阴性患者血清HBVDNA水平与肝组织炎症程度存在正相关关系(r=0.306,P<0.01),与纤维化程度无明显相关(r=0.112,P>0.05)。结论HBeAg阳性与HBeAg阴性患者血清HBVDNA载量与肝组织病理学变化的关系存在显著差别,应区别分析其临床意义。
简介:目的探讨慢性肝病和肝细胞癌患者肝组织TTVDNA的感染状况.方法采用PCR扩增法分别合成Gla、G2b两种亚型的双链TTVDNA探针.应用两型探针对45例肝组织标本进行TTVDNA原位杂交检测,巢氏PCR法检测血清TTVDNA.结果31例血清TTVDNA阳性患者的肝组织TTVDNA均为阳性(100%).14例血清TTVDNA阴性的患者肝组织中TTVDNA阳性者7例(50%).慢性肝病患者的肝组织中TTVDNA散在分布在汇管区周围的肝细胞核内,肝癌患者TTVDNA则集中分布在肝癌细胞核内及癌组织周围的肝细胞核内.结论慢性肝病与肝癌患者肝组织中TTVDNA的感染状态存在一定差异.
简介:目的探讨乙型肝炎DNA复制期患者血清IL-12、IL-18水平变化及Foxp3基因的表达。方法选取两院收治乙型肝炎患者137例,其中慢性乙型肝炎患者92例(A组),乙型肝炎肝硬化患者45例(B组),HBV携带者67例(C组),另外选取健康体检者34例为对照组(D组),采用定量PCR、ELISA法检测四组人群的血HBV-DNA复制,IL-12、IL-18表达水平以及Foxp3基因的表达情况。结果与对照组相比较,A、B组肝功能显著升高(P〈0.05),IL-12及IL-18表达水平明显升高(P〈0.05),A、B组血清Foxp3基因表达明显升高(P〈0.05)。结论乙型肝炎DNA复制活跃程度影响血清中细胞因子IL-12、IL-18及Foxp3的表达,复制程度越活跃,患者IL-12、IL-18、Foxp3基因表达水平越高。
简介:目的评价Fibrotouch联合FIB-4指数对肝硬化患者发生并发症的预测价值。方法2015年6月~2016年2月我院诊治的肝硬化患者,使用Fibrotouch测量其肝脏硬度值(LSM),计算其FIB-4指数。比较不同Child—Pugh分级患者、代偿期与失代偿期肝硬化患者、单一并发症与多种并发症肝硬化患者LSM和FIB-4指数差异。采用Logistic回归分析进行风险预测,应用受试者工作特征曲线(ROC)评价诊断试验的效能。结果Child—PushA级患者LSM为(17.09±7.15)kPa,显著低于Child—PughB级【(27.37±5.83)kPa,P〈0.01】或Child—PushC级【(34.26±9.10)kPa,P〈0.01】患者;Child—PughA级患者FIB-4指数为(3.69±2.66),显著低于Child—PughB级【(6.67±4.30),P〈0.01】或Child—Pu【ghC级【(8.49±4.69),P〈0.01】;代偿期肝硬化患者LSM为(17.14±7.27)Kpa,显著低于失代偿期肝硬化患者【(29.11±7.79)kPa,P〈0.01】;代偿期肝硬化患者FIB-4指数为(3.66±2.70),显著低于失代偿期肝硬化患者【(7.14±4.44),P〈0.01】;单一并发症组LSM为(26.98±6.03)kPa,显著低于多种并发症组[(34.95±9.12)kPa,P〈0.01】;单一并发症组FIB-4指数为(6.56±4.22),显著低于多种并发症组【(8.74±4.72),P〈0.01】;Fibrotouch和FIB-4指数联合预测肝硬化并发症的AUC为0.903,显著高于FIB-4指数单独预测时的AUC(0.765,P〈0.01)。结论Fibrotouch与FIB-4指数联合对肝硬化患者发生并发症的预测价值较高,值得进一步研究。