2020
Impaired hypocretin/orexin system alters responses to salient stimuli in obese male mice
Tan Y, Hang F, Liu ZW, Stoiljkovic M, Wu M, Tu Y, Han W, Lee AM, Kelley C, Hajos M, Lu L, de Lecea L, de Araujo I, Picciotto M, Horvath TL, Gao XB. Impaired hypocretin/orexin system alters responses to salient stimuli in obese male mice. Journal Of Clinical Investigation 2020, 130: 4985-4998. PMID: 32516139, PMCID: PMC7456212, DOI: 10.1172/jci130889.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsFeeding BehaviorHypothalamusMaleMiceMice, TransgenicNerve NetNeuronsObesityOrexinsStress, PsychologicalConceptsHcrt cellsObese miceDiet-induced obese miceObese male miceExcessive energy intakeNeuropeptide hypocretin/orexinHypocretin/orexinHcrt neuronsMale miceHcrt systemClinical studiesCommon causeSynaptic transmissionObese animalsEnergy intakeAcute stressCognitive functionSalient stimuliAlters responsesExact mechanismMiceHomeostatic regulationNeuronal networksBehavioral changesNeurons
2019
Nicotinic Acetylcholine Receptor Signaling in the Hypothalamus: Mechanisms Related to Nicotine’s Effects on Food Intake
Calarco CA, Picciotto MR. Nicotinic Acetylcholine Receptor Signaling in the Hypothalamus: Mechanisms Related to Nicotine’s Effects on Food Intake. Nicotine & Tobacco Research 2019, 22: 152-163. PMID: 30690485, PMCID: PMC7297099, DOI: 10.1093/ntr/ntz010.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsFood intakeNicotinic acetylcholine receptorsWeight gainBody weightPreclinical workAcetylcholine receptorsPost-cessation weight gainOrexigenic agouti-related peptideAnorexigenic proopiomelanocortin (POMC) neuronsNicotine replacement therapyAgouti-related peptideNicotinic agonist cytisineAbility of nicotineLower body weightProopiomelanocortin neuronsNicotine administrationHypothalamic circuitsReplacement therapyArcuate nucleusNicotine effectsNicotine actsAgonist cytisineAverage weight gainTobacco useRodent models
2013
Repeated in vivo exposure of cocaine induces long‐lasting synaptic plasticity in hypocretin/orexin‐producing neurons in the lateral hypothalamus in mice
Rao Y, Mineur YS, Gan G, Wang AH, Liu Z, Wu X, Suyama S, de Lecea L, Horvath TL, Picciotto MR, Gao X. Repeated in vivo exposure of cocaine induces long‐lasting synaptic plasticity in hypocretin/orexin‐producing neurons in the lateral hypothalamus in mice. The Journal Of Physiology 2013, 591: 1951-1966. PMID: 23318871, PMCID: PMC3624862, DOI: 10.1113/jphysiol.2012.246983.Peer-Reviewed Original ResearchConceptsCAMP response element-binding proteinHypocretin neuronsLong-term potentiationSynaptic potentiationLateral hypothalamusCocaine administrationExperience-dependent synaptic potentiationExperience-dependent potentiationHypocretin-producing neuronsVivo cocaine administrationCocaine-treated animalsOrexin-producing neuronsAMPA-type glutamate receptorsVentral tegmental areaHigh-frequency stimulationCocaine-treated micePlace preference protocolResponse element-binding proteinDrugs of abuseCocaine withdrawalTegmental areaGlutamatergic synapsesGlutamate receptorsHypocretin systemElement-binding protein
2007
Prolonged wakefulness induces experience-dependent synaptic plasticity in mouse hypocretin/orexin neurons
Rao Y, Liu ZW, Borok E, Rabenstein RL, Shanabrough M, Lu M, Picciotto MR, Horvath TL, Gao XB. Prolonged wakefulness induces experience-dependent synaptic plasticity in mouse hypocretin/orexin neurons. Journal Of Clinical Investigation 2007, 117: 4022-4033. PMID: 18060037, PMCID: PMC2104495, DOI: 10.1172/jci32829.Peer-Reviewed Original ResearchConceptsHypocretin/orexin neuronsLong-term potentiationOrexin neuronsGlutamatergic synapsesSynaptic plasticitySleep lossExperience-dependent synaptic plasticityDopamine D1 receptorsChronic sleep lossSleep-wake regulationModafinil treatmentLateral hypothalamusD1 receptorsSimilar potentiationBrain slicesNeuronal activityNeuronal circuitryDopamine systemNervous systemSynaptic strengthNeuronsPathological conditionsGentle handlingMiceWakefulness
2006
Nicotine withdrawal increases body weight, neuropeptide Y and Agouti-related protein expression in the hypothalamus and decreases uncoupling protein-3 expression in the brown adipose tissue in high-fat fed mice
Fornari A, Pedrazzi P, Lippi G, Picciotto MR, Zoli M, Zini I. Nicotine withdrawal increases body weight, neuropeptide Y and Agouti-related protein expression in the hypothalamus and decreases uncoupling protein-3 expression in the brown adipose tissue in high-fat fed mice. Neuroscience Letters 2006, 411: 72-76. PMID: 17052838, DOI: 10.1016/j.neulet.2006.10.014.Peer-Reviewed Original ResearchMeSH KeywordsAdipose Tissue, BrownAgouti Signaling ProteinAgouti-Related ProteinAnalysis of VarianceAnimalsBody WeightDietary FatsHypothalamusIntercellular Signaling Peptides and ProteinsIon ChannelsMaleMiceMice, Inbred C57BLMitochondrial ProteinsNeuropeptide YNicotineNicotinic AgonistsReceptors, Adrenergic, betaSubstance Withdrawal SyndromeUncoupling Protein 3ConceptsNicotine withdrawalBrown adipose tissueBody weightNeuropeptide YAdipose tissueOrexigenic peptides neuropeptide YHigh-fat fed miceChronic nicotine treatmentPeptides neuropeptide YHigh-fat dietAbility of nicotineBody weight regulationProtein 3 expressionAnorectic effectNicotine treatmentSmoking cessationFat dietFed miceHuman smokersNormal rodentsWeight regulationIncreased expressionProtein 3Protein expressionExposure results
1995
Abnormal avoidance learning in mice lacking functional high-affinity nicotine receptor in the brain
Picciotto M, Zoli M, Léna C, Bessis A, Lallemand Y, LeNovère N, Vincent P, Pich E, Brûlet P, Changeux J. Abnormal avoidance learning in mice lacking functional high-affinity nicotine receptor in the brain. Nature 1995, 374: 65-67. PMID: 7870173, DOI: 10.1038/374065a0.Peer-Reviewed Original ResearchConceptsHigh-affinity nicotine receptorsNeuronal nicotinic acetylcholine receptorsBrains of miceΒ2-/- miceNicotinic acetylcholine receptorsThalamic neuronsNicotine applicationFunctional nAChRsNicotine receptorsBrain slicesNicotinic subunitsAbnormal avoidanceAcetylcholine receptorsAspects of behaviorHigh-affinity binding sitesMutant miceElectrophysiological recordingsPassive avoidanceAssociative memoryMiceNicotineNeuronal nicotinic subunitsNon-mutant siblingsBrainReceptors