2012
Cortical GABA Levels in Primary Insomnia
Morgan PT, Pace-Schott EF, Mason GF, Forselius E, Fasula M, Valentine GW, Sanacora G. Cortical GABA Levels in Primary Insomnia. Sleep 2012, 35: 807-814. PMID: 22654200, PMCID: PMC3353043, DOI: 10.5665/sleep.1880.Peer-Reviewed Original ResearchConceptsGABA levelsSleep complaintsPrimary insomniaSleep onsetCortical GABA levelsGABA/creatine ratiosOccipital GABA levelsPolysomnographic sleep measuresBrain GABA levelsBody mass indexMain outcome measuresUniversity research clinicPrimary insomnia groupAllostatic responseProton magnetic resonance spectroscopyMaintenance of sleepGABA contentUse of cigarettesUse of caffeineMass indexOutpatient studyCreatine ratioOutcome measuresResearch clinicTwo-group comparison study
2011
1H-[13C]-Nuclear Magnetic Resonance Spectroscopy Measures of Ketamine's Effect on Amino Acid Neurotransmitter Metabolism
Chowdhury GM, Behar KL, Cho W, Thomas MA, Rothman DL, Sanacora G. 1H-[13C]-Nuclear Magnetic Resonance Spectroscopy Measures of Ketamine's Effect on Amino Acid Neurotransmitter Metabolism. Biological Psychiatry 2011, 71: 1022-1025. PMID: 22169441, PMCID: PMC3660962, DOI: 10.1016/j.biopsych.2011.11.006.Peer-Reviewed Original ResearchConceptsMedial prefrontal cortexSubanesthetic dosesAcute effectsNeurotransmitter cyclingMagnetic resonance spectroscopy measuresMPFC of ratsPotential physiological processesAntidepressant-like propertiesSaline-treated animalsAmino acid neurotransmittersHippocampus of ratsDose of ketamineEffects of ketamineGlial energy metabolismMPFC levelsGlutamate releaseKetamine effectsΓ-aminobutyric acidGlial metabolismKetaminePrefrontal cortexEnrichment of glutamateVivo studiesEnergy metabolismRatsThe antidepressant effect of ketamine is not associated with changes in occipital amino acid neurotransmitter content as measured by [1H]-MRS
Valentine GW, Mason GF, Gomez R, Fasula M, Watzl J, Pittman B, Krystal JH, Sanacora G. The antidepressant effect of ketamine is not associated with changes in occipital amino acid neurotransmitter content as measured by [1H]-MRS. Psychiatry Research 2011, 191: 122-127. PMID: 21232924, PMCID: PMC3061550, DOI: 10.1016/j.pscychresns.2010.10.009.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAntidepressive AgentsBlood PressureDepressive Disorder, MajorDissociative DisordersFemaleGamma-Aminobutyric AcidGlutamic AcidHeart RateHumansKetamineMagnetic Resonance SpectroscopyMaleMiddle AgedOccipital LobeProtonsPsychiatric Status Rating ScalesPsychometricsRetrospective StudiesSingle-Blind MethodStatistics as TopicTime FactorsYoung AdultConceptsMajor depressive disorderAntidepressant effectsAntidepressant actionNeurotransmitter contentNMDA receptor antagonist ketamineProton magnetic resonance spectroscopy methodConventional antidepressant treatmentKetamine's antidepressant actionSingle intravenous doseSingle-blind conditionsAntidepressant treatmentChronic treatmentKetamine infusionIntravenous dosePharmacodynamic basisDepressive disorderAcute actionsMRS scansOccipital cortexDepressive symptomsDepression scoresRating ScaleBaseline measuresInfusionKetamine