Receptors, LeptinLeptinReceptors, Cell SurfaceHypothalamusObesitySTAT3 Transcription FactorEatingMice, ObeseArcuate NucleusPro-OpiomelanocortinBody WeightCarrier ProteinsAdipose TissueAgouti-Related ProteinHyperphagiaInsulinRats, ZuckerProteinsEnergy MetabolismRNA, MessengerSignal TransductionNeuropeptide YProtein IsoformsVentromedial Hypothalamic NucleusSuppressor of Cytokine Signaling ProteinsMice, Inbred C57BLAdiponectinGhrelinAdiposityJanus Kinase 2Blood GlucoseReverse Transcriptase Polymerase Chain ReactionBody Mass IndexAdipokinesInjections, IntraventricularAppetite RegulationMelanocortinsFastingNeoplasms, Adipose TissueRats, Sprague-DawleyGene Expression RegulationInfusions, IntraventricularThird VentricleAdipocytesHomeostasisRats, WistarPeptide HormonesResistinFeeding BehaviorDietary Fats