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1、中國藥理學與毒理學雜志2004年8月;18(4):253-258ChinJPharmacolToxicol2004Aug;18(4):253-258·253·EffectsofrhynchophyllineonmonoaminetransmittercontentsofstriatumandhippocampusincerebralischemicratsLUYuanFu,XIEXiaoLong,WUQin,WENGuoRong,YANGSuFen,SHIJingShan(DepartmentofPharmacology,ZunyiMedicalCollege,Zun
2、yi563003,China)Abstract:AIMToexploretheprotectionmechanismof[4]cerebraledema.StudyofPrado,etalshowedrhynchophylline(Rhy)oncerebralischemicinjury.thatischemiaactivatedadenosinecyclaseandinMETHODSThecerebralischemicinjuryofratswasducedasignificantincreaseincyclicadenosineinducedbymiddlecerebra
3、larteryocclusion.Theextramonophosphate(cAMP),whichaggravatedthecellularfluidofstriatumandhippocampusincerebralisglutamineexcitotoxicity.Inischemicbraintissue,chemicratswascollectedbyusingmicrodialyticapproachat30,60,90and120min,respectively.Thennorethereleaseofglutamatecanincreasethereleas
4、eofpinephrine(NE),5hydroxyindoleaceticacid(5HIAA),DAinstriatummediatedbyNmethylDaspartate3,4dihydroxyphenylaceticacid(DOPAC)andhomovanil(NMDA)receptors[5].AlargeamountsofDArelicacid(HVA)weremeasuredwithreversephasehighleasecannotonlyproduceH2O2(hydroperoxide),performanceliquidchromato
5、graphelectrochemicaldetecbutalsoconfusethesystemofglutathionetor.RESULTSCerebralischemicinduceddecreasesinreductase,simultaneously,whichdecreasetheextracellular5HIAA,DOPACandHVAinstriatumandabilityoffreeradicalclearanceandresultsinthehippocampus,butNEwasincreased.Rhyinversesthe[6]changesin
6、5HIAA,DOPAC,HVAandNEincerebralaccumulationoffreeradical.Inischemia,gluischemicrats.CONCLUSIONRhycanregulatetamatereleaseatasynapseleadstointracellularreleaseandmetabolismoftheintracerebralmonoaminecalciumoverload,whichactivatesphospholipase,transmittersinstriatumandhippocampusofcerebralkina
7、seandendonuclease,resultsindegradationofischemicrats.themembranephospholipids,proteinandDNA,Keywords:rhynchophylline;cerebralischemia;noreasaresult,themembrane,nervefiberandthepinephrine;hydroxyindoleaceticacid;3,4dihydrox[7]structureofcel