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1、EXPERIMENTALSTUDIESENVIRONMENTALCUE-DEPENDENTDOPAMINERGICNEURONALDIFFERENTIATIONANDFUNCTIONALEFFECTOFGRAFTEDNEUROEPITHELIALSTEMCELLSINPARKINSONIANBRAINYutakaMine,M.D.OBJECTIVE:Tophysiologicallyrepairdamagedneuralcircuitryusingneuraltrans-DepartmentofNeurosurgery,plantation,thedo
2、norcellsmustbeabletodifferentiateintotheoptimaltypeandnum-SchoolofMedicine,berofneuronsforthehostbrainenvironment.TheymustalsobecapableoffunctionalKeioUniversity,andDepartmentofNeurosurgery,regulationbythehostbrain.Thesefeaturesareimportanttooptimizefunctionalout-EijuGeneralHosp
3、ital,comeandtominimizesideeffects.Inthisstudy,thedifferentiationofgraftedmesen-Tokyo,Japancephalicneuroepithelialstemcellsinthenormalandparkinsonianbrainwasassessedmorphologicallyandbehaviorallytoconfirmtheinfluenceofthehostbrainenviron-TakuroHayashi,M.D.,Ph.D.mentafterneuraltrans
4、plantationregardingfunctionaloutcomeandsideeffectsofDepartmentofNeurosurgery,transplants.CollegeofMedicine,UniversityofSouthFlorida,METHODS:Greenfluorescentprotein-positivemesencephalicneuroepithelialstemTampa,Floridacellsweredissectedfromearlyratembryosandtransplantedintonormal
5、(n20)andParkinsonsdisease(PD)ratmodelstriata(n30).ThedifferentiationpatternofMotoyukiYamada,M.D.graftedcellswaspreciselymonitoredimmunohistochemically,andthefunctionalDepartmentofNeurosurgery,Tokyo-KitaSocialInsuranceHospital,effectsofgraftedcellsonbehaviorwereassessedusingana
6、mphetamine-inducedTokyo,Japanrotationtest.RESULTS:ThegraftedcellssurvivedinbothnormalandPDratstriataanddifferenti-HideyukiOkano,M.D.,Ph.D.atedintotyrosinehydroxylase-positivecells.In8-week-oldgrafts,thenumberoftyro-DepartmentofPhysiology,sinehydroxylase-positivecellswas3-foldhig
7、herinparkinsonianbrainsthaninnor-SchoolofMedicine,KeioUniversity,malbrains.Thedonor-derivedtyrosinehydroxylase-positivecellsexhibitedamatureTokyo,Japanmorphologywithlong,well-branchedcellprocessesandlargecellbodies,especiallyinparkinsonianbrains.Also,theprocesslengthsofthesecell
8、sinparkinsonianbrainsTakeshiKawase,M.D.,Ph.D.we