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Spontaneous Intraocular Hemorrhage in Rats during Postnatal Ocular Development

机译:产后眼睛发育过程中大鼠的自发性眼内出血

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Tostudyspontaneousintraocularhemorrhageinratsduringpostnataloculardevelopmentandtoelucidatetheunderlyingmechanism,postnataloculardevelopmentinthealbinoWistarHannover(WH)andSprague#8211;Dawley(SpD)andpigmentedLong#8211;Evans(LE)strainswasanalyzed.Pups(n=2to5)fromeachstrainwereeuthanizeddailyonpostnataldays(PND)0through21andtheireyesexaminedmacroscopicallyandhistologically;similaranalyseswereperformedin26to39additionalWHpupsdailyfromPND7to14.Atnecropsy,ring-shapedredregionsandredspotswerepresentintheeyesofWHandSpDrats.Theselesionswereattributedhistologicallytohemorrhageofthetunicavasculosalentisoroftheretina,choroid,andhyaloidartery,respectively.SimilarintraocularhemorrhagesoccurredinLErats,althoughthemacroscopicalterationsfoundinWHandSpDratswerenotpresentinthisstrain.Amongthe3strainsevaluated,theincidenceoftheintraocularhemorrhagewashighestinWHrats.Wehereshowedthatintraocularhemorrhageoccursspontaneouslyduringnormaloculardevelopmentinratsregardlessofthestrain;however,theregion,degree,andincidenceofintraocularhemorrhagedifferamongstrains.Hemorrhageinthetunicavasculosalentisandhyaloidarterymayresultfromtheleakageoferythrocytesfromthetemporaryvasculatureofthesetissuesduringregression.Themechanismsunderlyinghemorrhageintheretinaandchoroidremainunclear.Toourknowledge,thisreportisthefirsttodescribethespontaneousintraocularhemorrhagethatoccursduringpostnataloculardevelopmentinrats.
机译:Tostudyspontaneousintraocularhemorrhageinratsduringpostnataloculardevelopmentandtoelucidatetheunderlyingmechanism,postnataloculardevelopmentinthealbinoWistarHannover(WH)andSprague#8211; Dawley(SPD)andpigmentedLong#8211;埃文斯(LE)strainswasanalyzed.Pups(N = 2to5)fromeachstrainwereeuthanizeddailyonpostnataldays(PND)0through21andtheireyesexaminedmacroscopicallyandhistologically; similaranalyseswereperformedin26to39additionalWHpupsdailyfromPND7to14.Atnecropsy,环shapedredregionsandredspotswerepresentintheeyesofWHandSpDrats.Theselesionswereattributedhistologicallytohemorrhageofthetunicavasculosalentisoroftheretina,脉络膜,andhyaloidartery,在大鼠中出现类似的眼内出血,尽管在WHandSpDrats中发现的宏观显微镜改变并未出现在该菌株中。在评估的3个菌株中,在大鼠中的眼内出血冲洗的发生率,表明眼内出血的发生率是正常的眼球出血的原因可能是由于眼底出血和脉络膜出血所致。

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