2006
Ghrelin controls hippocampal spine synapse density and memory performance
Diano S, Farr SA, Benoit SC, McNay EC, da Silva I, Horvath B, Gaskin FS, Nonaka N, Jaeger LB, Banks WA, Morley JE, Pinto S, Sherwin RS, Xu L, Yamada KA, Sleeman MW, Tschöp MH, Horvath TL. Ghrelin controls hippocampal spine synapse density and memory performance. Nature Neuroscience 2006, 9: 381-388. PMID: 16491079, DOI: 10.1038/nn1656.Peer-Reviewed Original ResearchConceptsHippocampal spine synapse densitySpine synapse densitySpine synapse formationGrowth hormone releaseNovel therapeutic strategiesLong-term potentiationHigher brain functionsEnhanced spatial learningGut hormonesGhrelin administrationHypothalamic actionSynapse densitySpine synapsesCA1 regionHormone releaseNeuropeptide ghrelinGhrelin bindingHippocampal formationTherapeutic strategiesMelanocortin systemGhrelinBrain areasMetabolic controlSynaptic changesSynaptic plasticity
2004
Low CA1 Spine Synapse Density is Further Reduced by Castration in Male Non-human Primates
Leranth C, Prange-Kiel J, Frick KM, Horvath TL. Low CA1 Spine Synapse Density is Further Reduced by Castration in Male Non-human Primates. Cerebral Cortex 2004, 14: 503-510. PMID: 15054066, DOI: 10.1093/cercor/bhh012.Peer-Reviewed Original ResearchConceptsSpine synapse densitySynapse densityNon-human primatesSpine synapsesCA1 spine synapse densityPyramidal cell apical dendritesCA1 hippocampal areaCell apical dendritesCA1 stratum radiatumFemale non-human primatesMale non-human primatesMale primatesOrchidectomized animalsApical dendritesCA1 areaDendritic shaftsHippocampal areaStratum radiatumGonadal hormonesControl monkeysMale hippocampusGonadectomized animalsOvariectomized femalesAndrogen hormonesPrimate hippocampus
2000
Hormonal regulation of hippocampal spine synapse density involves subcortical mediation
Leranth C, Shanabrough M, Horvath TL. Hormonal regulation of hippocampal spine synapse density involves subcortical mediation. Neuroscience 2000, 101: 349-356. PMID: 11074158, DOI: 10.1016/s0306-4522(00)00369-9.Peer-Reviewed Original ResearchConceptsFimbria/fornix transectionSpine synapse densitySpine densitySynapse densityHippocampal spine synapse densitySubcortical structuresSubcortical mediationPyramidal cell spinesFornix transectionHippocampal CA1 subfieldHippocampal synaptic plasticityCA1 pyramidal cellsFimbria/fornixLong-term potentiationEstrogen replacementIpsilateral hippocampusContralateral hippocampusCA1 subfieldMedian raphePyramidal cellsSupramammillary areaAfferent connectionsHippocampal morphologySeptal complexNew synapses