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Medchemexpress/(+)-MK 801马来酸盐(同义词:马来酸二唑西平;马来酸氢二唑西平;(+)-MK 801;MK 801)/HY-15084/1
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- •Neuroreport.2017May24;28(8):444-450.
Description | (+)-MK801(Maleate)isapotent,selectiveandnon-competitive NMDA receptorantagonistwith Kd of37.2nMinratbrainmembranes. |
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IC50&Target | Ki:30.5nM |
InVitro | [3H]MK-801labelshigh-affinitybindingsitesinratcerebralcorticalmembranesinasaturablemanner.MK-801producesapotentblockadeofdepolarizingresponsestoNMDAinratcerebralcorticalslices.Theonlycompoundsthatareabletocompetefor[3H]MK-801bindingsitesaresubstancesknowntoblocktheresponsesofexcitatoryaminoacidsmediatedbytheNMDAreceptorsubtype[1].MK-801inhibitsN-methyl-D-aspartate-induced[3H]norepinephrine(NE)releaseand[3H]TCPbindinginthehippocampuswithIC50of20nMand9nM,respectively[2]. MK-801causesaprogressive,long-lastingblockadeofcurrentinducedbyNMDA.Mg2+ (10mM)preventsMK-801fromblockingtheN-Me-D-Asp-inducedcurrent,evenwhenMK-801isappliedforalongtimeinthepresenceofNMDA.MK-801isalsoeffectiveatblockingNMDA-activatedsingle-channelactivityinoutside-outpatches[3]. MK-801(<500=""μm)=""prevents=""lps-induced=""activation=""of=""microglia=""in=""a=""concentration-dependent=""manner=""with=""increased=""cox-2=""protein=""expression=""in=""bv-2=""cells.=""mk-801=""><500=""μm)=""reduces=""microglial=""tnf-α=""output=""with="">50of400μMinBV-2cells[4]. |
InVivo | TreatmentofmicewithMK-801(1mg/kg)beforeeachMETHinjectionreducestheextentofDAdepletionby55%instriatalofmice.MK-801(1mg/kg)attenuatestheeffectsofMETHonmicroglialactivationinstriatalofmice[4].MK-801(0.05mg/kgor0.2mg/kg,i.p.)inratsjustpriortoreactivationofthecocaine-associatedmemoryintheCPPcontextattenuatessubsequentcocaine-primedreinstatement,whilenodisruptionoccurresinratsthatdonotreceivereactivationintheCPPcontext.MK-801(0.2mg/kg,i.p.)priortotworeactivationsessionsinthehomecagedoesnotsuppresssubsequentcocaine-primedreinstatement[5]. |
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Pleaserefertothesolubilityinformationtoselecttheappropriatesolvent. | ||||||||||||||||
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KinaseAssay [1] | CerebralcorticesfrommaleSprague-Dawleyrats(200-300g)arehomogenizedin9volumesofice-cold0.32mol/LsucrosebyninestrokeswithaTeflon/glasshomogenizerat500rpm.Thehomogenateiscentrifugedfor10minat1×103g,andthesupernatantisrecentrifugedat1×104gfor20minat4°C.ThepelletissUSPendedinassaybuffer(118mMNaCl/4.7mMKCl/1.2mMMgSO4/5mMNaHCO3/20mMHepes/1.2mMKH2PO4/2.5mMCaCl2/11mMglucose,pH7.4)andincubatedat23°Cfor20minpriortofinalcentrifugationat1×103gfor20minat4°C.Thepelletisresuspendedinassaybuffer(70mLpergramoforiginaltissue).Bindingof[3H]MK-801ismeasuredbyincubating750μLduplicatealiquotsofthiscrudemembranesuspension(=0.75mgofprotein)with100μLofbuffercontainingdisplacerorofbufferalone(totalbinding),100μLof50nM[3H]MK-801,and50μLofbufferfor60minat23°C.Nonspecificbindingisdefinedby100μM(finalconcentration)unlabeledMK-801.MCEhasnotindependentlyconfirmedtheaccuracyofthesemethods.Theyareforreferenceonly. | ||||||||||||||||
AnimalAdministration [5] | MK-801isformulatedinsaline. AnimalsaregivensalineorMK-801followedbycocaine30minlaterinthehomecageinsteadofintheCPPapparatusforthetwodaysof“reactivation.”Thisisdonetodeterminewhetherreactivationofthememoryforthecocaine-associatedcontextbycocaineintheCPPcontextisnecessaryfortheABIlityofMK-801todisruptreconsolidation.Animalsundergopreconditioning,conditioning,testing,andextinctionbutanimalsareinjectedwithsalineorMK-801(0.20mg/kg,i.p.)30minpriortoacocaineinjection(10mg/kg,i.p.)inthehomecage.Animalsremaininthehomecages,andthenextday,theprocedurefromthefirstdayofreactivationisrepeated.Thefollowingday,animalsaretestedforcocaine-primedreinstatementintheirCPPboxwithoutanypriormicroinjectionofsalineorMK-801.MCEhasnotindependentlyconfirmedtheaccuracyofthesemethods.Theyareforreferenceonly. | ||||||||||||||||
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MolecularWeight | 337.37 | ||||||||||||
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Formula | C₂₀H₁₉NO₄ | ||||||||||||
CASNo. | 77086-22-7 | ||||||||||||
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Shipping | RoomtemperatureincontinentalUS;mayvaryelsewhere | ||||||||||||
Solvent&Solubility | 10mMinDMSO;Ethanol:6mg/mL;H2O:<0.6=""> MK-801isdissolvedin1%dimethylsulfoxideanddilutedwithpreservative-freenormalsalineataconcentrationof2μg/μL[6]. *"<1 mg/ml"="" means="" slightly="" soluble="" or="" insoluble.="" "≥"="" means="" soluble,="" but="" saturation="">1> | ||||||||||||
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Purity:99.98%