2017
Ketamine-induced reduction in mGluR5 availability is associated with an antidepressant response: an [11C]ABP688 and PET imaging study in depression
Esterlis I, DellaGioia N, Pietrzak RH, Matuskey D, Nabulsi N, Abdallah CG, Yang J, Pittenger C, Sanacora G, Krystal JH, Parsey RV, Carson RE, DeLorenzo C. Ketamine-induced reduction in mGluR5 availability is associated with an antidepressant response: an [11C]ABP688 and PET imaging study in depression. Molecular Psychiatry 2017, 23: 824-832. PMID: 28397841, PMCID: PMC5636649, DOI: 10.1038/mp.2017.58.Peer-Reviewed Original ResearchConceptsMajor depressive disorderMGluR5 availabilityPositron emission tomographyKetamine administrationControl groupAspartate glutamate receptor antagonistIntravenous ketamine administrationKetamine-induced reductionMetabotropic glutamatergic receptorsRapid antidepressant effectsGlutamate receptor antagonistsKetamine-induced changesEffects of ketaminePET imaging studiesMechanism of actionGlutamate surgeAntidepressant effectsAntidepressant efficacyAntidepressant responseGlutamatergic receptorsControl subjectsReceptor antagonistHealthy controlsDepressive disorderSustained decrease
2013
The neuroinflammation marker translocator protein is not elevated in individuals with mild-to-moderate depression: A [11C]PBR28 PET study
Hannestad J, DellaGioia N, Gallezot JD, Lim K, Nabulsi N, Esterlis I, Pittman B, Lee JY, O’Connor K, Pelletier D, Carson RE. The neuroinflammation marker translocator protein is not elevated in individuals with mild-to-moderate depression: A [11C]PBR28 PET study. Brain Behavior And Immunity 2013, 33: 131-138. PMID: 23850810, PMCID: PMC3899398, DOI: 10.1016/j.bbi.2013.06.010.Peer-Reviewed Original ResearchConceptsLevels of TSPOControl subjectsSystemic inflammationPositron emission tomographyModerate depressionTSPO levelsActivation of microgliaTranslocator protein 18Total ligand bindingAcute episodePrimary outcomePostmortem studiesSevere depressionMajor depressionPET scansTSPO genotypeBrain regionsEmission tomographySubject factorsPET studiesArterial input functionInflammationElevated levelsProtein 18DepressionChanges in the Cholinergic System between Bipolar Depression and Euthymia as Measured with [123I]5IA Single Photon Emission Computed Tomography
Hannestad JO, Cosgrove KP, DellaGioia NF, Perkins E, Bois F, Bhagwagar Z, Seibyl JP, McClure-Begley TD, Picciotto MR, Esterlis I. Changes in the Cholinergic System between Bipolar Depression and Euthymia as Measured with [123I]5IA Single Photon Emission Computed Tomography. Biological Psychiatry 2013, 74: 768-776. PMID: 23773793, PMCID: PMC3805761, DOI: 10.1016/j.biopsych.2013.04.004.Peer-Reviewed Original ResearchConceptsBipolar depressionControl subjectsCholinergic systemSingle photon emissionBipolar disorderAge-matched control subjectsEndogenous acetylcholine levelsNew treatment targetsNicotinic acetylcholine receptorsPhoton emissionLow receptor numbersClinical characteristicsEndogenous acetylcholineDepressive episodeAcetylcholine levelsTomography scanMajor depressionReceptor numberTemporal cortexNAChR numbersTreatment targetsAcetylcholine receptorsControl groupBrain regionsLower β2