2021
Hunger-promoting AgRP neurons trigger an astrocyte-mediated feed-forward auto-activation loop in mice
Varela L, Stutz B, Song JE, Kim JG, Liu ZW, Gao XB, Horvath TL. Hunger-promoting AgRP neurons trigger an astrocyte-mediated feed-forward auto-activation loop in mice. Journal Of Clinical Investigation 2021, 131 PMID: 33848272, PMCID: PMC8121506, DOI: 10.1172/jci144239.Peer-Reviewed Original ResearchConceptsAgRP neuronsHypothalamic feeding circuitsInhibitory neurotransmitter GABAGhrelin administrationInhibitory toneAstrocytic responseMetabolic milieuProstaglandin E2Neurotransmitter GABANeuronal controlSynaptic plasticityGlial processesNeuronsNeural excitationMitochondrial adaptationsFood deprivationAstrocytesPerikaryaFeeding circuitRegion crucialFeedingObesityGABAExcitabilityChemogenetics
2018
Hypothalamic CNTF volume transmission shapes cortical noradrenergic excitability upon acute stress
Alpár A, Zahola P, Hanics J, Hevesi Z, Korchynska S, Benevento M, Pifl C, Zachar G, Perugini J, Severi I, Leitgeb P, Bakker J, Miklosi AG, Tretiakov E, Keimpema E, Arque G, Tasan RO, Sperk G, Malenczyk K, Máté Z, Erdélyi F, Szabó G, Lubec G, Palkovits M, Giordano A, Hökfelt TG, Romanov RA, Horvath TL, Harkany T. Hypothalamic CNTF volume transmission shapes cortical noradrenergic excitability upon acute stress. The EMBO Journal 2018, 37: e100087. PMID: 30209240, PMCID: PMC6213283, DOI: 10.15252/embj.2018100087.Peer-Reviewed Original ResearchConceptsHypothalamic activationVolume transmissionAcute stressNeurotrophic factor releaseNorepinephrinergic neuronsNoradrenergic neuronsCortical excitabilityMultimodal pathwaysNoradrenaline synthesisLocus coeruleusNeuronal excitationExtracellular signal-regulated kinases 1Norepinephrine synthesisTyrosine hydroxylaseEpendymal cellsSignal-regulated kinases 1ExcitabilityPrefrontal cortexFactor releaseCognate receptorsNeuronsHuman brainKinase 1CNTFActivation