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Spontaneous Coagulopathy in Inbred WAG/RijYcb Rats

机译:自交WAG / RijYcb大鼠自发性凝血

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HerewedescribeaseriesofcasesofspontaneouscoagulopathyinacolonyofinbredWAG/RijYcb(WAG/RijY)rats.Thisstrainpreviouslyhadbeenbredatourinstitutionwithoutsymptomatologyforseveraldecades.Theindexcasewasa10-wk-oldmaleratthatdevelopedalargehematomaatasubcutaneousinjectionsite.ClinicopathologicfindingsincludedadecreasedRBCcount,decreasedhematocrit,decreasedhemoglobinconcentration,normalPT,andprolonged(50%to70%)aPTT(52s;reference,15to33s).ExaminationofadditionalWAG/RijYratsthatdiedunexpectedlyorhadclinicalsignsofbleedingintheabsenceofexperimentalmanipulationalsorevealednormalPTandprolongedaPTT.Histologicexaminationsoftissuesfromallratswereunremarkableexceptforsevereacutefocallyextensivehemorrhagecorrespondingtothemacroscopicfindingsofacutehemorrhage.FurthermoretheaPTTin8clinicallynormaladultratsand8clinicallynormal4-wk-oldWAG/RijYlittermatesofbothsexeswasprolonged.WeconcludethattheseWAG/RijYratshaveaninheriteddefectintheintrinsiccoagulationpathway.
机译:HerewedescribeaseriesofcasesofspontaneouscoagulopathyinacolonyofinbredWAG / RijYcb(WAG / RijY)rats.Thisstrainpreviouslyhadbeenbredatourinstitutionwithoutsymptomatologyforseveraldecades.Theindexcasewasa10-WK-oldmaleratthatdevelopedalargehematomaatasubcutaneousinjectionsite.ClinicopathologicfindingsincludedadecreasedRBCcount,decreasedhematocrit,decreasedhemoglobinconcentration,normalPT,andprolonged(50%至70%)的aPTT(52S;参考,15to33s).ExaminationofadditionalWAG / RijYratsthatdiedunexpectedlyorhadclinicalsignsofbleedingintheabsenceofexperimentalmanipulationalsorevealednormalPTandprolongedaPTT.Histologicexaminationsoftissuesfromallratswereunremarkableexceptforsevereacutefocallyextensivehemorrhagecorrespondingtothemacroscopicfindingsofacutehemorrhage.FurthermoretheaPTTin8clinicallynormaladultratsand8clinicallynormal4-延长了这两个星期的WAG / RijYlittermates的时间。我们认为这些WAG / RijYratshavean在固有凝血途径中继承了缺陷。

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