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首页> 外文期刊>Comparative Medicine >Confirmed Persistent Mouse Hepatitis Virus Infection and Transmission by Mice with a Targeted Null Mutation of Tumor Necrosis Factor to Sentinel Mice, Using Short-term Exposure
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Confirmed Persistent Mouse Hepatitis Virus Infection and Transmission by Mice with a Targeted Null Mutation of Tumor Necrosis Factor to Sentinel Mice, Using Short-term Exposure

机译:已确认的小鼠持久性肝炎病毒感染和传播,并通过短期接触将肿瘤坏死因子靶向空突变转移到前哨小鼠。

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Mousehepatitisvirus(MHV)infectioninimmunocompetentmiceistypicallyselflimiting,andtransmissionisshortlived.Withtherecentsurgeinthedevelopmentofgeneticallyengineeredmutantmicewithalterationsinimmunesystemcomponents,however,MHVclearancemaybedisrupted.WereportconfirmedpersistenttransmissionofMHVfromtumornecrosisfactor(TNF)knockoutmice,B6.129S1-Tnfsuptm1Lj/sup(TNF-/-),tonudeandimmunocompetentsentinelmiceoveraperiodoffivemonths.InfectionwithMHVwasconfirmedinnudesentinelmicebyuseofreversetranscriptase-polymerasechainreaction(RT-PCR)detectionofviralRNAinascendingcolonandfeces.TheRT-PCR-analyzedspecimensrecoveredfromsentinelanimalsweresequenced,and92%homologytotheNregionoftheMHVstrainSgenomewasdocumented.Inaddition,immunocompetentmicehadevidenceofseroconversiontoMHVinfectionandRT-PCR-positivefecalandascendingcolonspecimensafteronly24hofdirectcontactwiththeTNF-/-mice.Totheauthors'knowledge,thisisthefirstreportedexperimentalevidencethatMHVtransmissioncanoccurforseveralmonths,frompersistentlyinfectedmicetosentinelmice,overashort-termexposureperiod.
机译:Mousehepatitisvirus(MHV)infectioninimmunocompetentmiceistypicallyselflimiting,andtransmissionisshortlived.Withtherecentsurgeinthedevelopmentofgeneticallyengineeredmutantmicewithalterationsinimmunesystemcomponents,但是,MHVclearancemaybedisrupted.WereportconfirmedpersistenttransmissionofMHVfromtumornecrosisfactor(TNF)knockoutmice,B6.129S1-TNF tm1Lj (TNF - / - ),tonudeandimmunocompetentsentinelmiceoveraperiodoffivemonths.InfectionwithMHVwasconfirmedinnudesentinelmicebyuseofreversetranscriptase-polymerasechainreaction(RT-PCR) detectionofviralRNAinascendingcolonandfeces.TheRT-PCR-analyzedspecimensrecoveredfromsentinelanimalsweresequenced,and92%homologytotheNregionoftheMHVstrainSgenomewasdocumented.Inaddition,immunocompetentmicehadevidenceofseroconversiontoMHVinfectionandRT-PCR-positivefecalandascendingcolonspecimensafteronly24hofdirectcontactwiththeTNF - / - mice.Totheauthors'knowledge,thisisthefirstreportedexperimentalevidencethatMHVtransmissioncanoccurforseveralmonths,frompersistentlyi短期接触会影响小鼠的感觉正常。

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