2011
Ghrelin-induced hypothermia: A physiological basis but no clinical risk
Wiedmer P, Strasser F, Horvath TL, Blum D, DiMarchi R, Lutz T, Schürmann A, Joost HG, Tschöp MH, Tong J. Ghrelin-induced hypothermia: A physiological basis but no clinical risk. Physiology & Behavior 2011, 105: 43-51. PMID: 21513721, PMCID: PMC3146973, DOI: 10.1016/j.physbeh.2011.03.027.Peer-Reviewed Original ResearchConceptsGhrelin treatmentBody temperatureApplication of ghrelinMedial preoptic areaPotential anatomical basisCold-sensitive neuronsGhrelin infusionBody core temperatureChronic i.Positive energy balanceGhrelin receptorPreoptic areaAxon terminalsClinical riskFood intakeGhrelinHealthy humansSerious hypothermiaMale subjectsPhysiologic circumstancesAnatomical basisHypothermiaCold exposureRelevant decreaseEnergy expenditure
2010
Gonadotropin-Releasing Hormone Fibers Contact POMC Neurons in the Hypothalamic Arcuate Nucleus
Sotonyi P, Mezei G, Racz B, Dallman MF, Abizaid A, Horvath TL. Gonadotropin-Releasing Hormone Fibers Contact POMC Neurons in the Hypothalamic Arcuate Nucleus. Reproductive Sciences 2010, 17: 1024-1028. PMID: 20713970, DOI: 10.1177/1933719110378346.Peer-Reviewed Original ResearchConceptsArcuate nucleusGonadotropin-releasing hormone (GnRH) neuronsPOMC cell bodiesEnergy expenditureHypothalamic arcuate nucleusHypothalamic neuronal populationsMelanocyte stimulating hormoneHormone neuronsPOMC neuronsAnorexigenic proopiomelanocortinStimulating hormoneAnatomical proximityAxon terminalsGonadal axisGlucose homeostasisPeripheral signalsNeuronal populationsCell bodiesDirect appositionGnRHEnergy metabolismNeuronsMetabolic stateHormoneProopiomelanocortin
2003
Fasting Activates the Nonhuman Primate Hypocretin (Orexin) System and Its Postsynaptic Targets
Diano S, Horvath B, Urbanski HF, Sotonyi P, Horvath TL. Fasting Activates the Nonhuman Primate Hypocretin (Orexin) System and Its Postsynaptic Targets. Endocrinology 2003, 144: 3774-3778. PMID: 12933647, DOI: 10.1210/en.2003-0274.Peer-Reviewed Original ResearchConceptsPerifornical regionArcuate nucleusHypothalamic regulationC-Fos-expressing cellsLateral hypothalamic cellsC-fosMedial preoptic areaVariety of endocrineC-fos expressionDiverse brain regionsHCRT axonsLeptin levelsNuclear c-FosDorsomedial hypothalamusAsymmetric synapsesBasal forebrainPresent studyPostsynaptic targetsDorsomedial nucleusNeuropeptide Y.Preoptic areaThalamic nucleiHcrt neuronsHcrt systemAxon terminals
2002
Uncoupling protein 2 in primary pain and temperature afferents of the spinal cord
Horvath B, Spies C, Warden CH, Diano S, Horvath TL. Uncoupling protein 2 in primary pain and temperature afferents of the spinal cord. Brain Research 2002, 955: 260-263. PMID: 12419545, DOI: 10.1016/s0006-8993(02)03364-4.Peer-Reviewed Original ResearchConceptsSpinal cordExpression of UCP2Primary sensory afferentsMechanisms of painProtein 2Primary painSensory afferentsSubstantia gelatinosaVentral hornSubstance P.Axon terminalsCordEnergy homeostasisUCP2 expressionDirect appositionTemperature sensationMitochondrial protonophorePainAfferentsUCP2Mitochondrial uncouplerCellular energy homeostasisExpressionPerikaryaAxonsUncoupling protein 2 (UCP2) lowers alcohol sensitivity and pain threshold
Horvath B, Spies C, Horvath G, Kox WJ, Miyamoto S, Barry S, Warden CH, Bechmann I, Diano S, Heemskerk J, Horvath TL. Uncoupling protein 2 (UCP2) lowers alcohol sensitivity and pain threshold. Biochemical Pharmacology 2002, 64: 369-374. PMID: 12147287, DOI: 10.1016/s0006-2952(02)01167-x.Peer-Reviewed Original ResearchConceptsCentral nervous systemTemperature sensationNervous systemBasal forebrain areasMajor risk factorAcute ethanol exposureAcute alcohol consumptionImpairment of painPeripheral energy expenditureAbuse of ethanolProtein 2Ethanol-induced toleranceWild-type animalsUCP2 knockoutPain thresholdTime of recoveryInduces toleranceRisk factorsEthanol exposureForebrain areasAxon terminalsNeuronal responsesAcute exposureAlcohol consumptionEnergy homeostasis
2001
A GABA-neuropeptide Y (NPY) interplay in LH release
Horvath T, Pu S, Dube M, Diano S, Kalra S. A GABA-neuropeptide Y (NPY) interplay in LH release. Peptides 2001, 22: 473-481. PMID: 11287104, DOI: 10.1016/s0196-9781(01)00343-6.Peer-Reviewed Original ResearchConceptsGamma-amino butyric acidLH releaseNeurotransmitter/neuromodulatorExcitatory effectsArcuate nucleusReceptor agonistInhibitory gamma-amino butyric acidY4 receptor agonistRelease of LHImmunoreactive axon terminalsRat brain sectionsDose-dependent mannerOvarian steroidsOvariectomized ratsAxon terminalsBrain sectionsPrimary siteNPYMorphological findingsCyclic releaseAgonistsLHNeuromodulatorsRatsAdministration
1999
Brain Uncoupling Protein 2: Uncoupled Neuronal Mitochondria Predict Thermal Synapses in Homeostatic Centers
Horvath T, Warden C, Hajos M, Lombardi A, Goglia F, Diano S. Brain Uncoupling Protein 2: Uncoupled Neuronal Mitochondria Predict Thermal Synapses in Homeostatic Centers. Journal Of Neuroscience 1999, 19: 10417-10427. PMID: 10575039, PMCID: PMC6782406, DOI: 10.1523/jneurosci.19-23-10417.1999.Peer-Reviewed Original ResearchConceptsC-Fos-expressing cellsPeripheral energy homeostasisHormone-releasing hormoneHypothalamic neuronal populationsCorticotropin-releasing factorMelanin-concentrating hormoneMitochondria of neuronsUCP2 proteinPeripheral hormonesProximal dendritesNeuropeptide YGonadal steroidsModulates neurotransmissionAxon terminalsBasal brainLocal brainNeuronal populationsAxonal processesNeuronal mitochondriaPeptidergic circuitsBrain circuitsEnergy homeostasisCold exposureNeuronsEndocrine processesHypocretin (orexin) activation and synaptic innervation of the locus coeruleus noradrenergic system
Horvath T, Peyron C, Diano S, Ivanov A, Aston‐Jones G, Kilduff T, van den Pol A. Hypocretin (orexin) activation and synaptic innervation of the locus coeruleus noradrenergic system. The Journal Of Comparative Neurology 1999, 415: 145-159. PMID: 10545156, DOI: 10.1002/(sici)1096-9861(19991213)415:2<145::aid-cne1>3.0.co;2-2.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsChlorocebus aethiopsFemaleHypothalamusImmunohistochemistryIntracellular Signaling Peptides and ProteinsLocus CoeruleusMacaca fascicularisMaleMicroscopy, ElectronMSH Release-Inhibiting HormoneNeuropeptidesNeurotransmitter AgentsNorepinephrineOrexinsPresynaptic TerminalsRatsRats, Sprague-DawleyTetrodotoxinTyrosine 3-MonooxygenaseConceptsLocus coeruleusSynaptic innervationNoradrenergic systemAxon terminalsTyrosine hydroxylase-immunopositive cellsAsymmetrical synaptic contactsLC-noradrenergic systemParallel electrophysiological studiesLocus coeruleus noradrenergic systemPresence of tetrodotoxinMelanin-concentrating hormoneLC neuronsAutonomic centersNoradrenergic innervationDense arborizationsExcitatory responsesHypocretin cellsSubstantia nigraSynaptic contactsHypocretin-2Lateral hypothalamusZona incertaModest depolarizationCatecholamine systemsCentral regulationInteractions between neuropeptide Y and gamma-aminobutyric acid in stimulation of feeding: a morphological and pharmacological analysis.
Pu S, Jain M, Horvath T, Diano S, Kalra P, Kalra S. Interactions between neuropeptide Y and gamma-aminobutyric acid in stimulation of feeding: a morphological and pharmacological analysis. Endocrinology 1999, 140: 933-40. PMID: 9927326, DOI: 10.1210/endo.140.2.6495.Peer-Reviewed Original ResearchConceptsGamma-aminobutyric acidStimulation of feedingNeuropeptide YParaventricular nucleusFood intakeArcuate nucleusDose-related fashionEffects of muscimolFeeding responseRat brain sectionsNPY actionNPY terminalsNPY neuronsBrain stemHypothalamic controlReceptor agonistSecond messenger systemsSated ratsAxon terminalsBrain sectionsMagnocellular divisionMuscimolMorphological findingsPharmacological analysisDistinct receptors
1997
Aromatase in axonal processes of early postnatal hypothalamic and limbic areas including the cingulate cortex
Horvath T, Roa-Pena L, Jakab R, Simpson E, Naftolin F. Aromatase in axonal processes of early postnatal hypothalamic and limbic areas including the cingulate cortex. The Journal Of Steroid Biochemistry And Molecular Biology 1997, 61: 349-357. PMID: 9365210, DOI: 10.1016/s0960-0760(97)80032-5.Peer-Reviewed Original ResearchConceptsAxonal processesLimbic areasStria terminalisCritical perinatal periodMedial preoptic areaPostnatal day 5Limbic cortexArcuate nucleusHypothalamic areaNeuronal perikaryaLimbic structuresMedial septumPerinatal periodPreoptic areaDiagonal bandMedial nucleusAxon terminalsImmunoreactive elementsPerikaryal labelingPeriventricular regionLateral septumBed nucleusParacrine actionRat brainLateral habenulaSuprachiasmatic efferents avoid phenestrated capillaries but innervate neuroendocrine cells, including those producing dopamine.
Horvath T. Suprachiasmatic efferents avoid phenestrated capillaries but innervate neuroendocrine cells, including those producing dopamine. Endocrinology 1997, 138: 1312-20. PMID: 9048641, DOI: 10.1210/endo.138.3.4976.Peer-Reviewed Original ResearchConceptsPituitary hormone secretionVasculosum laminae terminalisSuprachiasmatic nucleusHormone secretionNeuroendocrine cellsPreoptic areaLamina terminalisDopamine cellsMedian eminenceAnterior pituitary hormone secretionMedial preoptic areaDiffuse cytoplasmic labelingPhaseolus vulgaris leukoagglutininFluorogold labelingPeriventricular areaArcuate nucleusHypothalamic sitesIP administrationVentromedial nucleusAnterior hypothalamusAnterograde tracerAxon terminalsPeriventricular regionElectron microscopic examinationTyrosine hydroxylase
1996
Aromatase Immunoreactivity in Axon Terminals of the Vertebrate Brain
Naftolin F, Horvath T, Jakab R, Leranth C, Harada N, Balthazart J. Aromatase Immunoreactivity in Axon Terminals of the Vertebrate Brain. Neuroendocrinology 1996, 63: 149-155. PMID: 9053779, DOI: 10.1159/000126951.Peer-Reviewed Original ResearchConceptsAxon terminalsAromatase immunoreactivityAxonal processesDifferent vertebrate speciesAdult central nervous systemRole of aromataseSmall clear synaptic vesiclesCentral nervous systemClear synaptic vesiclesVertebrate speciesSubcellular locationMost vertebratesSpecific limbicNeuronal perikaryaAromatase activityElectron microscopic examinationEstrogen synthesisHypothalamic structuresSubcellular distributionSynaptic levelVertebrate brainNervous systemBrain aromataseMolecular biologyIntraneuronal production
1993
Neuropeptide-Y innervation of estrogen-induced progesterone receptor-containing dopamine cells in the monkey hypothalamus: a triple labeling light and electron microscopic study
Horvath TL, Shanabrough M, Naftolin F, Leranth C. Neuropeptide-Y innervation of estrogen-induced progesterone receptor-containing dopamine cells in the monkey hypothalamus: a triple labeling light and electron microscopic study. Endocrinology 1993, 133: 405-414. PMID: 8100520, DOI: 10.1210/endo.133.1.8100520.Peer-Reviewed Original ResearchConceptsTyrosine hydroxylase-immunoreactive neuronsHydroxylase-immunoreactive neuronsProgesterone receptorSynaptic contactsAxon terminalsDopamine cellsTyrosine hydroxylase-immunopositive cellsHypophyseal hormone secretionEffects of NPYDorsomedial hypothalamic nucleusCoronal vibratome sectionsNuclear progesterone receptorPR-containing cellsAfrican green monkeysDiaminobenzidine reactionNPY axonsPeriventricular areaOVX animalsHormone secretionMonkey hypothalamusAnterior hypothalamusHypothalamic nucleiDopamine neuronsPRL releaseEstrogenNeuropeptide-Y innervation of estrogen-induced progesterone receptor-containing dopamine cells in the monkey hypothalamus: a triple labeling light and electron microscopic study
Horvath T, Shanabrough M, Naftolin F, Leranth C. Neuropeptide-Y innervation of estrogen-induced progesterone receptor-containing dopamine cells in the monkey hypothalamus: a triple labeling light and electron microscopic study. Endocrinology 1993, 133: 405-414. DOI: 10.1210/en.133.1.405.Peer-Reviewed Original ResearchTyrosine hydroxylase-immunoreactive neuronsNPY-immunoreactive axon terminalsProgesterone receptorNeuropeptide-YDopamine cellsFrequency of synaptic contactsLight brown diaminobenzidine reactionTyrosine hydroxylase-immunopositive cellsNPY-immunoreactive boutonsPR-containing cellsSynaptic contactsNuclear progesterone receptorDorsomedial hypothalamic nucleusEstrogen-treated monkeysHypophyseal hormone secretionAxon terminalsEffects of neuropeptide-YCoronal vibratome sectionsAfrican green monkeysPRL releaseOVX animalsDopamine neuronsMonkey hypothalamusHormone secretionHypothalamic nuclei
1992
GABAergic and catecholaminergic innervation of mediobasal hypothalamic β-endorphin cells projecting to the medial preoptic area
Horvath TL, Naftolin F, Leranth C. GABAergic and catecholaminergic innervation of mediobasal hypothalamic β-endorphin cells projecting to the medial preoptic area. Neuroscience 1992, 51: 391-399. PMID: 1281529, DOI: 10.1016/0306-4522(92)90323-t.Peer-Reviewed Original ResearchConceptsMedial preoptic areaPreoptic areaHormone-producing cellsArcuate nucleusHypothalamic beta-endorphin neuronsHormone-releasing hormone (LHRH) neuronsBeta-endorphin neuronsDirect estrogen actionHormone-containing neuronsVentromedial arcuate nucleusRetrograde tracer horseradish peroxidasePro-opiomelanocortin (POMC) neuronsCellular estrogen receptorsPro-opiomelanocortin cellsTracer horseradish peroxidaseΒ-endorphin cellsHormone neuronsImmunoreactive neuronsCatecholaminergic innervationCatecholaminergic neuronsRetrograde tracingSynaptic contactsEstrogen actionCatecholamine fibersAxon terminalsNeuropeptide-Y innervation of beta-endorphin-containing cells in the rat mediobasal hypothalamus: a light and electron microscopic double immunostaining analysis
Horvath TL, Naftolin F, Kalra SP, Leranth C. Neuropeptide-Y innervation of beta-endorphin-containing cells in the rat mediobasal hypothalamus: a light and electron microscopic double immunostaining analysis. Endocrinology 1992, 131: 2461-2467. PMID: 1425443, DOI: 10.1210/endo.131.5.1425443.Peer-Reviewed Original ResearchConceptsPituitary LH releaseLH releaseOvariectomized ratsMediobasal hypothalamusSynaptic connectionsNPY-immunoreactive axonsBeta-endorphin systemSynaptic membrane specializationsRat mediobasal hypothalamusDirect synaptic connectionsDiaminobenzidine reactionLHRH neuronsNPY neuronsDual effectHypothalamic NPYLH secretionMedial basalLHRH secretionOvarian steroidsPrecise neural mechanismsFemale ratsAxon terminalsElectron microscopic examinationPeptidergic systemsNeuroendocrine regulation