1997
Lack of Gonadotropin-Positive Feedback in the Male Rat Is Associated with Lack of Estrogen-Induced Synaptic Plasticity in the Arcuate Nucleus
Horvath T, Garcia-Segura L, Naftolin F. Lack of Gonadotropin-Positive Feedback in the Male Rat Is Associated with Lack of Estrogen-Induced Synaptic Plasticity in the Arcuate Nucleus. Neuroendocrinology 1997, 65: 136-140. PMID: 9067991, DOI: 10.1159/000127173.Peer-Reviewed Original ResearchConceptsArcuate nucleusFemale ratsSynaptic plasticitySynaptic retractionMale ratsSynapse countsEstrogen-induced synaptic plasticityFemale arcuate nucleusVehicle-injected groupHypothalamic arcuate nucleusAdministration of estrogenAfternoon of proestrusQuantitative electron microscopic analysisOil-injected controlsGonadotropin secretionSynaptic reorganizationSynaptic countsConstant estrusEndogenous estrogensSynaptic remodelingSingle injectionTreatment groupsHormone injectionEstrogenOvarian cycle
1996
Synaptic remodeling in the arcuate nucleus during the estrous cycle is induced by estrogen and precedes the preovulatory gonadotropin surge.
Naftolin F, Mor G, Horvath TL, Luquin S, Fajer AB, Kohen F, Garcia-Segura LM. Synaptic remodeling in the arcuate nucleus during the estrous cycle is induced by estrogen and precedes the preovulatory gonadotropin surge. Endocrinology 1996, 137: 5576-80. PMID: 8940386, DOI: 10.1210/endo.137.12.8940386.Peer-Reviewed Original ResearchConceptsSynaptic retractionArcuate nucleusAxosomatic synapsesPreovulatory gonadotropinEstrous cycleMorning of metestrusPhysiological synaptic plasticitySurge of gonadotropinsMorning of estrusPreovulatory LH surgePreovulatory estradiolPreovulatory levelsLH surgeGonadotropin surgeHypothalamic mechanismsSynaptic remodelingEstrogen diethylstilbestrolSynaptic plasticityGonadotropinOvarian cycleControl femalesSynapsesPositive controlEstradiolEstrogenSynaptic remodeling in the arcuate nucleus during the estrous cycle is induced by estrogen and precedes the preovulatory gonadotropin surge
Naftolin F, Mor G, Horvath T, Luquin S, Fajer A, Kohen F, Garcia-Segura L. Synaptic remodeling in the arcuate nucleus during the estrous cycle is induced by estrogen and precedes the preovulatory gonadotropin surge. Endocrinology 1996, 137: 5576-5580. DOI: 10.1210/en.137.12.5576.Peer-Reviewed Original ResearchPreovulatory gonadotropin surgeArcuate nucleusGonadotropin surgeSynaptic retractionMorning of metestrusEstrous cycleMorning of estrusAxosomatic synapsesPhysiological synaptic plasticitySurge of gonadotropinsPreovulatory estradiol surgePreovulatory LH surgeEstradiol surgeCirculating estradiolHypothalamic mechanismsPreovulatory levelsEstrogen diethylstilbestrolSynaptic plasticityLH surgeSynaptic remodelingGonadotropinEstrogenMidcycleMorphological eventsOvarian cyclePotential neuronal mechanisms of estrogen actions in synaptogenesis and synaptic plasticity
Naftolin F, Leranth C, Horvath TL, Garcia-Segura LM. Potential neuronal mechanisms of estrogen actions in synaptogenesis and synaptic plasticity. Cellular And Molecular Neurobiology 1996, 16: 213-223. PMID: 8743970, DOI: 10.1007/bf02088177.Peer-Reviewed Original ResearchConceptsSynaptic plasticityArcuate nucleusRole of GABAergicControl of LHMechanism of estrogenRat arcuate nucleusPotential neuronal mechanismsNeural cell adhesion moleculePOMC projectionsSynaptic retractionFSH secretionGnRH cellsGonadotropin levelsConstant estrusDevelopmental synaptogenesisEstrogen actionCell adhesion moleculeSynaptic inputsSynaptic patternsNeuronal mechanismsNeuronal membranesDevelopmental sex differencesAdhesion moleculesEstrogenAdult life
1995
Estrogen-induced hypothalamic synaptic plasticity and the regulation of gonadotrophins
Horvath T, Leedom L, Lewis C, Garcia-Segura L, Naftolin F. Estrogen-induced hypothalamic synaptic plasticity and the regulation of gonadotrophins. Current Opinion In Endocrinology Diabetes And Obesity 1995, 2: 186. DOI: 10.1097/00060793-199504000-00018.Peer-Reviewed Original ResearchSynaptic plasticityNumber of synapseRegulation of gonadotrophinBasal estrogen levelsUnderstanding of estrogenGonadotrophin controlSynaptic retractionEstrogen surgeGonadotrophin levelsEstrogen levelsPreovulatory riseArcuate nucleusGlial ensheathmentNeuronal perikaryaGlial cellsNeurotransmitter effectsEstrogenEstrogen inducesNegative feedback controlGonadotrophinPossible mechanismRetractionHypothalamusPerikaryaLevels