2024
Hypothalamic hormone deficiency enables physiological anorexia in ground squirrels during hibernation
Mohr S, Dai Pra R, Platt M, Feketa V, Shanabrough M, Varela L, Kristant A, Cao H, Merriman D, Horvath T, Bagriantsev S, Gracheva E. Hypothalamic hormone deficiency enables physiological anorexia in ground squirrels during hibernation. Nature Communications 2024, 15: 5803. PMID: 38987241, PMCID: PMC11236985, DOI: 10.1038/s41467-024-49996-2.Peer-Reviewed Original ResearchConceptsHypothalamic feeding centersHormone deficiencyHypothalamic arcuate nucleus neuronsArcuate nucleus neuronsThyroid hormone deficiencyFeeding centerEffects of ghrelinAnorexigenic effectNucleus neuronsPhysiological anorexiaThyroid hormonesNormal physiological functionsGround squirrelsInterbout arousalAnorexiaThirteen-lined ground squirrelsProlonged periodReduced sensitivityPhysiological functionsDeficiency
2020
AgRP neurons control compulsive exercise and survival in an activity-based anorexia model
Miletta MC, Iyilikci O, Shanabrough M, Šestan-Peša M, Cammisa A, Zeiss CJ, Dietrich MO, Horvath TL. AgRP neurons control compulsive exercise and survival in an activity-based anorexia model. Nature Metabolism 2020, 2: 1204-1211. PMID: 33106687, DOI: 10.1038/s42255-020-00300-8.Peer-Reviewed Original ResearchConceptsAgRP neuronsActivity-based anorexia modelAgRP neuronal activityVivo fiber photometryFood-restricted miceFood-restricted animalsCompulsive exerciseAnorexia modelHypothalamic agoutiNeuropeptide YExercise volumeFood intakeMouse modelNeuronal activityFiber photometryDaily activationNeuronal circuitsPsychiatric conditionsAnorexia nervosaChemogenetic toolsNeuronsLong-term behavioral impactElevated fat contentVoluntary cessationFat content
2017
Ghrelin is Related to Personality Differences in Reward Sensitivity and Impulsivity
Ralevski E, Shanabrough M, Newcomb J, Gandelman E, Hayden R, Horvath TL, Petrakis I. Ghrelin is Related to Personality Differences in Reward Sensitivity and Impulsivity. Alcohol And Alcoholism 2017, 53: 52-56. PMID: 29136100, DOI: 10.1093/alcalc/agx082.Peer-Reviewed Original ResearchConceptsAspects of impulsivityTraits of impulsivityHealthy social drinkersSocial drinkersReward sensitivityImpulsivity traitsPersonality measuresPersonality differencesImpulsivityDrugs of abusePersonality characteristicsSubjective effectsDirect relationshipHigh levelsDrinkersFeeding-related peptidesPunishmentFirst studyIndividualsTraitsSecondary analysisParticipantsAbuseRelationshipOriginal studyGhrelin is Supressed by Intravenous Alcohol and is Related to Stimulant and Sedative Effects of Alcohol
Ralevski E, Horvath TL, Shanabrough M, Hayden R, Newcomb J, Petrakis I. Ghrelin is Supressed by Intravenous Alcohol and is Related to Stimulant and Sedative Effects of Alcohol. Alcohol And Alcoholism 2017, 52: 431-438. PMID: 28481974, DOI: 10.1093/alcalc/agx022.Peer-Reviewed Original ResearchConceptsGhrelin levelsDoses of alcoholHealthy social drinkersSubjective effectsTG levelsAlcohol infusionSedative effectsLow doseHigh doseOral alcohol administrationIntravenous alcohol infusionFeeding-related peptidesSocial drinkersAlcohol administrationIntravenous alcoholOral alcoholGhrelinPercent changeInfusionRewarding propertiesBehavioral effectsAlcohol effectsDoseTime pointsSignificant predictors
2016
CD301b+ Mononuclear Phagocytes Maintain Positive Energy Balance through Secretion of Resistin-like Molecule Alpha
Kumamoto Y, Camporez JP, Jurczak MJ, Shanabrough M, Horvath T, Shulman GI, Iwasaki A. CD301b+ Mononuclear Phagocytes Maintain Positive Energy Balance through Secretion of Resistin-like Molecule Alpha. Immunity 2016, 45: 583-596. PMID: 27566941, PMCID: PMC5033704, DOI: 10.1016/j.immuni.2016.08.002.Peer-Reviewed Original ResearchConceptsMononuclear phagocytesResistin-like molecule αResistin-like molecule alphaSignificant weight lossPositive energy balanceInsulin sensitivityGlucose metabolismAdipose tissueBody weightMultiple organsMultifunctional cytokineBody homeostasisMarked reductionHeterogeneous groupWeight lossPhagocytesMolecule αHomeostasisEnergy balanceRELMαCD301bNormoglycemiaCytokinesMacrophages
2015
Bcl-xL Is Necessary for Neurite Outgrowth in Hippocampal Neurons
Park HA, Licznerski P, Alavian KN, Shanabrough M, Jonas EA. Bcl-xL Is Necessary for Neurite Outgrowth in Hippocampal Neurons. Antioxidants & Redox Signaling 2015, 22: 93-108. PMID: 24787232, PMCID: PMC4281845, DOI: 10.1089/ars.2013.5570.Peer-Reviewed Original ResearchConceptsDeath receptor 6Hippocampal neuronsNeurite outgrowthExacerbation of hypoxiaBcl-xLNeuronal outgrowthNeuronal process outgrowthNeuronal injuryNeurodegenerative stimuliVivo ischemiaHypoxic injuryNeuronal survivalBrain injuryImpairs neurite outgrowthHypoxic controlsSynapse numberAxonal pruningNeurite damageB cellsReceptor 6Synaptic plasticityDR6 expressionSynapse formationEarly increaseNeurons
2013
Antibodies to cannabinoid type 1 receptor co‐react with stomatin‐like protein 2 in mouse brain mitochondria
Morozov YM, Dominguez MH, Varela L, Shanabrough M, Koch M, Horvath TL, Rakic P. Antibodies to cannabinoid type 1 receptor co‐react with stomatin‐like protein 2 in mouse brain mitochondria. European Journal Of Neuroscience 2013, 38: 2341-2348. PMID: 23617247, PMCID: PMC3902808, DOI: 10.1111/ejn.12237.Peer-Reviewed Original ResearchConceptsStomatin-like protein 2Type 1 receptorPresence of CB1Protein 2Anti-CB1 antibodySynthetic cannabinoid WINMouse brain mitochondriaCerebral cortexEndocannabinoid signalingBrain cellsCannabinoid WINNeuronal mitochondriaBrain mitochondriaAntibodiesMitochondrial functionCB1Polyclonal antibodiesCortexMitochondrial preparationsSerumReceptors
2011
Maternal Ghrelin Deficiency Compromises Reproduction in Female Progeny through Altered Uterine Developmental Programming
Martin JR, Lieber SB, McGrath J, Shanabrough M, Horvath TL, Taylor HS. Maternal Ghrelin Deficiency Compromises Reproduction in Female Progeny through Altered Uterine Developmental Programming. Endocrinology 2011, 152: 2060-2066. PMID: 21325042, PMCID: PMC3075930, DOI: 10.1210/en.2010-1485.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsEmbryo ImplantationFemaleFertilityGene Expression Regulation, DevelopmentalGhrelinHeterozygoteHomeobox A10 ProteinsHomeodomain ProteinsImmunohistochemistryLitter SizeMaleMiceMice, KnockoutProliferating Cell Nuclear AntigenReproductionReverse Transcriptase Polymerase Chain ReactionTranscription FactorsUterusWnt ProteinsConceptsGhrelin deficiencyDevelopmental programmingAbnormal endometrial functionFemale wild-type miceUterus of miceLevels of ghrelinRegulation of appetiteWild-type miceReproductive tract developmentWild-type offspringSubsequent subfertilityEndometrial proliferationUnexposed miceEndometrial functionUtero exposureUterine expressionEmbryo implantationOvarian folliclesCorpora luteaGhrelinReproductive tractTract developmentMiceSignificant alterationsSubfertility
2010
Synaptic input organization of the melanocortin system predicts diet-induced hypothalamic reactive gliosis and obesity
Horvath TL, Sarman B, García-Cáceres C, Enriori PJ, Sotonyi P, Shanabrough M, Borok E, Argente J, Chowen JA, Perez-Tilve D, Pfluger PT, Brönneke HS, Levin BE, Diano S, Cowley MA, Tschöp MH. Synaptic input organization of the melanocortin system predicts diet-induced hypothalamic reactive gliosis and obesity. Proceedings Of The National Academy Of Sciences Of The United States Of America 2010, 107: 14875-14880. PMID: 20679202, PMCID: PMC2930476, DOI: 10.1073/pnas.1004282107.Peer-Reviewed Original ResearchConceptsHigh-fat dietSynaptic input organizationReactive gliosisPOMC neuronsDIO ratsDR ratsArcuate nucleusMelanocortin systemPOMC cellsNeuropeptide Y cellsInput organizationLoss of synapsesDiet-induced obesityBlood-brain barrierHFD-fed animalsDIO animalsAnorexigenic proopiomelanocortinGlial ensheathmentSynaptic organizationInhibitory inputsLean ratsDR animalsNeuronal circuitsCell bodiesGliosisFgfr2 Is Required for the Development of the Medial Prefrontal Cortex and Its Connections with Limbic Circuits
Stevens HE, Smith KM, Maragnoli ME, Fagel D, Borok E, Shanabrough M, Horvath TL, Vaccarino FM. Fgfr2 Is Required for the Development of the Medial Prefrontal Cortex and Its Connections with Limbic Circuits. Journal Of Neuroscience 2010, 30: 5590-5602. PMID: 20410112, PMCID: PMC2868832, DOI: 10.1523/jneurosci.5837-09.2010.Peer-Reviewed Original ResearchConceptsMedial prefrontal cortexCerebral cortexFibroblast growth factor receptorCKO miceExcitatory neuronsPrefrontal cortexCortical neuron developmentEntire cerebral cortexRadial glial cellsSpecific fibroblast growth factor receptorsGrowth factor receptorGABAergic neuronsLimbic circuitsCortical neuronsGlial cellsSubcortical stationsBed nucleusCortical developmentLimbic systemStria terminalisSynaptic terminalsSecondary decreaseNeuronal precursorsVentricular zoneNeuron developmentEarly-Life Experience Reduces Excitation to Stress-Responsive Hypothalamic Neurons and Reprograms the Expression of Corticotropin-Releasing Hormone
Korosi A, Shanabrough M, McClelland S, Liu ZW, Borok E, Gao XB, Horvath TL, Baram TZ. Early-Life Experience Reduces Excitation to Stress-Responsive Hypothalamic Neurons and Reprograms the Expression of Corticotropin-Releasing Hormone. Journal Of Neuroscience 2010, 30: 703-713. PMID: 20071535, PMCID: PMC2822406, DOI: 10.1523/jneurosci.4214-09.2010.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAnalysis of VarianceAnimalsAnimals, NewbornChromatin ImmunoprecipitationCorticotropin-Releasing HormoneExcitatory Amino Acid AntagonistsFemaleGene Expression Regulation, DevelopmentalMaleMaternal DeprivationMicroscopy, Electron, TransmissionNeuronsParaventricular Hypothalamic NucleusPatch-Clamp TechniquesPhysical StimulationPregnancyRatsRats, Sprague-DawleyRepressor ProteinsRNA, MessengerSodium Channel BlockersStress, PsychologicalSynaptic PotentialsTetrodotoxinVesicular Glutamate Transport Protein 2ConceptsCorticotropin-releasing hormoneNeuron-restrictive silencer factorCRH neuronsHypothalamic neuronsCRH expressionEarly life experiencesMiniature excitatory synaptic currentsHypothalamic CRH neuronsExcitatory synaptic currentsCRH gene expressionGlutamate vesicular transporterCRH gene transcriptionTranscriptional repressor neuron-restrictive silencer factorExcitatory innervationExperience-induced neuroplasticityInhibitory synapsesRat pupsExcitatory synapsesSynaptic currentsPersistent suppressionVesicular transportersCognitive functionNeuronsSilencer factorMaternal care