2004
Increased Brain GABA Concentrations Following Acute Administration of a Selective Serotonin Reuptake Inhibitor
Bhagwagar Z, Wylezinska M, Taylor M, Jezzard P, Matthews P, Cowen P. Increased Brain GABA Concentrations Following Acute Administration of a Selective Serotonin Reuptake Inhibitor. American Journal Of Psychiatry 2004, 161: 368-370. PMID: 14754790, DOI: 10.1176/appi.ajp.161.2.368.Peer-Reviewed Original ResearchConceptsGamma-aminobutyric acidBrain GABA concentrationsAcute administrationGABA concentrationSelective serotonin reuptake inhibitor citalopramSelective serotonin reuptake inhibitorsSerotonin reuptake inhibitor citalopramCortical gamma-aminobutyric acidActions of SSRIsGABA/creatine ratiosReuptake inhibitor citalopramSerotonin reuptake inhibitorsGABA neuronsSSRI treatmentReuptake inhibitorsIntravenous citalopramDepressed patientsCreatine ratioHealthy volunteersCortical levelOccipital cortexCrossover designMean increaseMagnetic resonance spectroscopyMood improvement
2002
State and trait abnormalities in serotonin function in major depression
Bhagwagar Z, Whale R, Cowen P. State and trait abnormalities in serotonin function in major depression. The British Journal Of Psychiatry 2002, 180: 24-28. PMID: 11772847, DOI: 10.1192/bjp.180.1.24.Peer-Reviewed Original ResearchConceptsCortisol responseHealthy controlsMajor depressionSerotonin functionRecovered subjectsAdrenal axis dysfunctionBrain serotonin functionPlacebo-controlled designMarker of vulnerabilityAxis dysfunctionClinical recoveryReuptake inhibitorsUnmedicated subjectsProlactin responseDepressed patientsEndocrine responsesNeuroendocrine studiesDepressed subjectsCitalopramDepressionPatientsSubjectsResponseDysfunctionNeurotransmission
2001
Pindolol Augmentation of Selective Serotonin Reuptake Inhibitors: PET Evidence That the Dose Used in Clinical Trials Is Too Low
Rabiner E, Bhagwagar Z, Gunn R, Sargent P, Bench C, Cowen P, Grasby P. Pindolol Augmentation of Selective Serotonin Reuptake Inhibitors: PET Evidence That the Dose Used in Clinical Trials Is Too Low. American Journal Of Psychiatry 2001, 158: 2080-2082. PMID: 11729033, DOI: 10.1176/appi.ajp.158.12.2080.Peer-Reviewed Original ResearchMeSH KeywordsAdultBrainDepressive Disorder, MajorDose-Response Relationship, DrugDrug Administration ScheduleDrug Therapy, CombinationFemaleHumansMaleMiddle AgedPindololReceptors, SerotoninReceptors, Serotonin, 5-HT1Selective Serotonin Reuptake InhibitorsTomography, Emission-ComputedTreatment OutcomeConceptsPositron emission tomographyDose of pindololClinical trialsDepressed patientsSelective serotonin reuptake inhibitorsSignificant occupancyPresent clinical trialSerotonin reuptake inhibitorsPindolol augmentationAntidepressant medicationReuptake inhibitorsPET evidenceEmission tomographyPindololTrialsDoseAutoreceptorsMedicationsPatientsInconsistent resultsEfficacyVast majorityDosesDecreased sensitivity of 5-HT1D receptors in melancholic depression
Whale R, Clifford E, Bhagwagar Z, Cowen P. Decreased sensitivity of 5-HT1D receptors in melancholic depression. The British Journal Of Psychiatry 2001, 178: 454-457. PMID: 11331562, DOI: 10.1192/bjp.178.5.454.Peer-Reviewed Original ResearchConceptsSelective serotonin reuptake inhibitorsGrowth hormone responseGrowth hormone releaseSSRI treatmentMajor depressionHormone releaseMelancholic depressionHormone responseBrain serotonin functionSerotonin reuptake inhibitorsReuptake inhibitorsDepressive syndromeReceptor agonistReceptor subtypesSerotonin functionHealthy subjectsReceptor sensitivityPatientsControl groupMarked reductionZolmitriptanDepressionReceptorsTreatmentSelective ligands