2004
Histamine innervation and activation of septohippocampal GABAergic neurones: involvement of local ACh release
Xu C, Michelsen KA, Wu M, Morozova E, Panula P, Alreja M. Histamine innervation and activation of septohippocampal GABAergic neurones: involvement of local ACh release. The Journal Of Physiology 2004, 561: 657-670. PMID: 15486020, PMCID: PMC1665378, DOI: 10.1113/jphysiol.2004.071712.Peer-Reviewed Original ResearchConceptsLocal ACh releaseACh releaseGABAergic neuronesCholinergic neuronesSeptohippocampal cholinergicMedial septum/diagonal bandHistamine-induced activationGABAergic cell typesReceptor-selective antagonistHippocampal theta rhythmIndirect mechanismsConcentration-dependent mannerAtropine methylbromideHippocampal arousalGABAergic functionHistaminergic systemTuberomammillary nucleusCholinergic systemReceptor subtypesDiagonal bandHistamine effectSelective antagonistAlzheimer's diseaseGABAergic nucleusNeurodegenerative disordersHippocampal theta rhythm is reduced by suppression of the H‐current in septohippocampal GABAergic neurons
Xu C, Datta S, Wu M, Alreja M. Hippocampal theta rhythm is reduced by suppression of the H‐current in septohippocampal GABAergic neurons. European Journal Of Neuroscience 2004, 19: 2299-2309. PMID: 15090056, DOI: 10.1111/j.0953-816x.2004.03316.x.Peer-Reviewed Original ResearchConceptsHippocampal theta rhythmSeptohippocampal GABAergic neuronsGABAergic neuronsTheta rhythmH-currentMedial septum/diagonal bandRat brain slicesCholinergic neuronsGABAergic projectionsLocal infusionSpontaneous firingSelective blockadeDiagonal bandBrain slicesTheta burstsHippocampal learningNeuronsZD7288Underlying mechanismRhythmMemory taskGABAergicHippocampusBlockadeInfusion
2000
Muscarinic Tone Sustains Impulse Flow in the Septohippocampal GABA But Not Cholinergic Pathway: Implications for Learning and Memory
Alreja M, Wu M, Liu W, Atkins J, Leranth C, Shanabrough M. Muscarinic Tone Sustains Impulse Flow in the Septohippocampal GABA But Not Cholinergic Pathway: Implications for Learning and Memory. Journal Of Neuroscience 2000, 20: 8103-8110. PMID: 11050132, PMCID: PMC6772717, DOI: 10.1523/jneurosci.20-21-08103.2000.Peer-Reviewed Original ResearchMeSH KeywordsAcetylcholineAnimalsAtropineDiagonal Band of BrocaFluorescent DyesGamma-Aminobutyric AcidHippocampusIn Vitro TechniquesLearningMaleMemoryMuscarinic AgonistsMuscarinic AntagonistsNeural PathwaysNeuronsPatch-Clamp TechniquesRatsRats, Sprague-DawleyReceptor, Muscarinic M3Receptors, MuscarinicScopolamineSeptum of BrainSynaptic TransmissionConceptsHippocampal acetylcholine releaseSeptohippocampal cholinergic neuronsMuscarinic toneCholinergic neuronsCholinergic pathwaysAcetylcholine releaseImpulse flowNeurodegenerative disordersCognitive deficitsMedial septum/diagonal bandAmnesic effectMuscarinic cholinergic receptorsRat brain slicesSeptohippocampal cholinergic pathwaySeptohippocampal neuronsDisinhibitory mechanismGABA releaseGABAergic projectionsAxon collateralsCholinergic receptorsGABAergic pathwayMuscarinic receptorsSystemic infusionReceptor agonistSuccessful treatmentCholinergic Excitation of Septohippocampal GABA But Not Cholinergic Neurons: Implications for Learning and Memory
Wu M, Shanabrough M, Leranth C, Alreja M. Cholinergic Excitation of Septohippocampal GABA But Not Cholinergic Neurons: Implications for Learning and Memory. Journal Of Neuroscience 2000, 20: 3900-3908. PMID: 10804229, PMCID: PMC6772671, DOI: 10.1523/jneurosci.20-10-03900.2000.Peer-Reviewed Original ResearchMeSH KeywordsAcetylcholineAction PotentialsAnimalsAntibodies, MonoclonalCholinergic AgentsCognitionConditioning, PsychologicalElectrophysiologyGamma-Aminobutyric AcidHippocampusImmunotoxinsIn Vitro TechniquesMaleMemoryMuscarineMuscarinic AgonistsN-Glycosyl HydrolasesNeural InhibitionNeuronsRatsRats, Sprague-DawleyReceptor, Nerve Growth FactorReceptors, MuscarinicRibosome Inactivating Proteins, Type 1SaporinsSeptal NucleiSynaptic TransmissionTetrodotoxinTheta RhythmVasodilator AgentsConceptsMedial septum/diagonal bandSeptohippocampal cholinergic neuronsCholinergic neuronsCognition-enhancing effectsMuscarinic agonistsMuscarinic drugsContinuous theta rhythmHippocampal ACh releaseMuscarinic receptor antagonistMuscarinic cholinergic agonistRat brain slicesNovel fluorescent labelling techniqueDouble-labeling techniqueCholinergic excitationSeptohippocampal pathwayAcetylcholine releaseACh releaseDisinhibitory mechanismGABAergic pathwayReceptor antagonistUnlabeled neuronsCholinergic agonistsSystemic administrationDiagonal bandImpulse flow