Productoverview
- NameMuscimol
- ShortdescriptionPotent,selective,competitiveGABAAreceptoragoNIST
- BIOLOGicaldescription
Potent,selectiveandcompetitiveGABAAreceptoragonistandapotentpartialGABAA-ρ(GABAC)receptoragonist.
MuscimolisaGABAanalogwithcomparablepotencytoGABAandisthoughttoactattheorthostericsiteatGABAAreceptorsinvaryingactiveconformations.
AlsoactsasaweakinhibitorofGABAuptakebutisnotasubstrateforGABAtransaminase.
ApplicationofmuscimolevokesGABAARcurrentsanditsactionsareantagonizedbytheGABAARantagonistbicuculline(bicucullinemethochloride,methiodideandmethobromidealsoavailable).Muscimolenhancesinhibitoryneurotransmissionandsuppressesspontaneousactivity.ItiscommonlyusedinreversIBLebraininactivationstudies.
Activeinvivoandbloodbrainbarrierpermeable.Showspsychoactive,memoryimpairingeffectsandanticonvulsantactionsathighdoses.
- BiologicalactionAgonist
- Purity>99%
- Ourproductsinaction1citationSubmitYourCitationNow
Images
Properties
- Chemicalname5-Aminomethyl-3-hydroxyisoxazole
- MolecularWeight114.1
- Chemicalstructure
- MolecularFormulaC4H6N2O2
- CASNumber2763-96-4
- PubChemidentifier4266
- SMILESC1=C(ONC1=O)CN
- SourceSynthetic
- InChiInChI=1S/C4H6N2O2/c5-2-3-1-4(7)6-8-3/h1H,2,5H2,(H,6,7)
- InChiKeyZJQHPWUVQPJPQT-UHFFFAOYSA-N
- MDLnumberMFCD00057894
- AppearanceWhitesolid
Applications
- Applicationnotes
TheGABAAreceptoragonistmuscimolisusedatconcentrationsof1-50µM.MuscimolfromHelloBiousedat10µMledtoalargehyperpolarisingwhole-cellcurrentinhippocampalCA1neurons(seeFig1above).ActionofmuscimolwasfullyblockedbytheGABAAreceptorantagonistbicuculline(100µM).
#Protocol1:Assayusedformuscimol- WholecellvoltageclamprecordingsofCA1pyramidalneuronsfromtherathippocampalbrainslice.
- Neuronswereheldat0mVandGABAAreceptorcurrentswereevokedviaapplyingmuscimoldirectlytotherecordingchamberduringcontinuousperfusion.
- Totestmuscimol’sselectivitytoGABAAreceptorstheexperimentwasrepeatedwithinthesameneuroninthepresenceoftheGABAAreceptorantagonist bicuculline (100µM).
- Undertheseconditionsmuscimolfailedtoinduceahyperpolarisingcurrent.
StoringandUsingYourProduct
- StorageinstructionsRoomtemperature
- SolubilityoverviewSolubleinwater(100mM)
- ImportantThisproductisforRESEARCHUSEONLYandisnotintendedfortherapeuticordiagnosticuse.Notforhumanorveterinaryuse.
ReferencesforMuscimol
Anticonvulsantandbehavioraleffectsofmuscimolinimmaturerats.
MarešPetal(2014)BrainRes1582:227-36.PubMedID:25084038MuscimolasanIonotropicGABAReceptorAgonist.
JohnstonGA(2014)NeuRochemRes39(10):1942-7.PubMedID:24473816Hippocampalinfusionsofpyruvatereversethememory-impairingeffectsofseptalmuscimolinfusions.
KrebsDLetal(2005)EurJPharmacol520(1-3):91-9.PubMedID:16150437