2016
Astrocytic Insulin Signaling Couples Brain Glucose Uptake with Nutrient Availability
García-Cáceres C, Quarta C, Varela L, Gao Y, Gruber T, Legutko B, Jastroch M, Johansson P, Ninkovic J, Yi CX, Le Thuc O, Szigeti-Buck K, Cai W, Meyer CW, Pfluger PT, Fernandez AM, Luquet S, Woods SC, Torres-Alemán I, Kahn CR, Götz M, Horvath TL, Tschöp MH. Astrocytic Insulin Signaling Couples Brain Glucose Uptake with Nutrient Availability. Cell 2016, 166: 867-880. PMID: 27518562, PMCID: PMC8961449, DOI: 10.1016/j.cell.2016.07.028.Peer-Reviewed Original ResearchConceptsBlood-brain barrierSystemic glucose metabolismInsulin receptorGlucose metabolismGlucose uptakeGlial fibrillary acidic proteinBrain glucose uptakePostnatal ablationHypothalamic glucose sensingGlutamate-aspartate transporterFibrillary acidic proteinPositron emission tomographyMelanocortin neuronsKO miceGlucose levelsAstrocyte morphologyNormal responseEmission tomographyGlucose-induced activationAcidic proteinAspartate transporterCircuit connectivityInsulinGlucose availabilityMitochondrial function
2014
Molecular and cellular regulation of hypothalamic melanocortin neurons controlling food intake and energy metabolism
Koch M, Horvath TL. Molecular and cellular regulation of hypothalamic melanocortin neurons controlling food intake and energy metabolism. Molecular Psychiatry 2014, 19: 752-761. PMID: 24732669, DOI: 10.1038/mp.2014.30.Peer-Reviewed Original ResearchConceptsHypothalamic melanocortin neuronsEnergy metabolismFood intakePotential functional interactionsMelanocortin neuronsCellular regulationCellular processesFunctional interactionNeuronal circuit activityCellular mechanismsPhysiological behaviorEnergy homeostasisMetabolic eventsRegulationHypothalamic neuronsMetabolic healthObese individualsChronic overloadGlial cellsPhysical activityMetabolic disordersMelanocortin systemNeuronal circuitryCentral connectionsPsychiatric diseases
2006
Serotonin Reciprocally Regulates Melanocortin Neurons to Modulate Food Intake
Heisler LK, Jobst EE, Sutton GM, Zhou L, Borok E, Thornton-Jones Z, Liu HY, Zigman JM, Balthasar N, Kishi T, Lee CE, Aschkenasi CJ, Zhang CY, Yu J, Boss O, Mountjoy KG, Clifton PG, Lowell BB, Friedman JM, Horvath T, Butler AA, Elmquist JK, Cowley MA. Serotonin Reciprocally Regulates Melanocortin Neurons to Modulate Food Intake. Neuron 2006, 51: 239-249. PMID: 16846858, DOI: 10.1016/j.neuron.2006.06.004.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsEatingElectric StimulationMaleMiceMice, Inbred AMice, Inbred C57BLMice, KnockoutMice, ObeseMice, TransgenicNerve NetNeuronsPyridinesReceptor, Melanocortin, Type 3Receptor, Melanocortin, Type 4Receptor, Serotonin, 5-HT1BReceptors, MelanocortinSerotoninSerotonin 5-HT1 Receptor AgonistsConceptsFood intakePeripheral adiposity signalsBody weight homeostasisCentral serotonergic systemMelanocortin receptor agonistModulates food intakeSerotonin1B receptorsMelanocortin neuronsWeight homeostasisMelanocortin-3Receptor agonistSerotonergic regulationAdiposity signalsSerotonergic systemEndogenous releaseMelanocortin-4Central circuitryBody weightNeural pathwaysMelanocortin receptorsReceptorsDownstream activationAgonistsAntagonistIntake