2005
Increased salivary cortisol after waking in depression
Bhagwagar Z, Hafizi S, Cowen P. Increased salivary cortisol after waking in depression. Psychopharmacology 2005, 182: 54-57. PMID: 15991000, DOI: 10.1007/s00213-005-0062-z.Peer-Reviewed Original ResearchConceptsSalivary cortisolMedication-free subjectsMorning cortisol secretionCommunity-based sampleExaggerated releaseCortisol secretionAcute depressionHealthy controlsMajor depressionCortisol levelsDepressed subjectsCortisolMore cortisolDepressionPatientsRecent studiesSubjectsHypersecretionPathophysiologyObjectiveToMinMethodsWeResultsInControlSecretion
2004
Persistent reduction in brain serotonin1A receptor binding in recovered depressed men measured by positron emission tomography with [11C]WAY-100635
Bhagwagar Z, Rabiner E, Sargent P, Grasby P, Cowen P. Persistent reduction in brain serotonin1A receptor binding in recovered depressed men measured by positron emission tomography with [11C]WAY-100635. Molecular Psychiatry 2004, 9: 386-392. PMID: 15042104, DOI: 10.1038/sj.mp.4001401.Peer-Reviewed Original ResearchConceptsMajor depressionDepressed menDepressed subjectsAcute major depressionPositron emission tomography studyPotentials of brainEmission tomography studiesRecurrent major depressionPositron emission tomographyStatistical parametric mappingReceptor BPReference tissue modelAntidepressant medicationPersistent dysfunctionRaphe nucleusUnmedicated subjectsHealthy controlsBP valuesCortical areasTrait abnormalityMale subjectsEmission tomographyPersistent reductionTomography studyReceptor binding
2003
Lack of effect of a single dose of hydrocortisone on serotonin1A receptors in recovered depressed patients measured by positron emission tomography with [11C]WAY-100635
Bhagwagar Z, Montgomery A, Grasby P, Cowen P. Lack of effect of a single dose of hydrocortisone on serotonin1A receptors in recovered depressed patients measured by positron emission tomography with [11C]WAY-100635. Biological Psychiatry 2003, 54: 890-895. PMID: 14573316, DOI: 10.1016/s0006-3223(03)00466-9.Peer-Reviewed Original ResearchConceptsReceptor BPMajor depressionPositron emission tomographySerotonin-1A receptor bindingEmission tomographyPositron emission tomography scanAcute major depressionEmission tomography scanCertain brain areasElevated cortisol levelsLack of effectCortisol hypersecretionAcute administrationSingle doseHydrocortisone treatmentDepressed patientsTomography scanHealthy volunteersBrain areasCrossover designCortisol levelsSerotonin1A receptorsMale subjectsFemale subjectsPatientsIncrease in Concentration of Waking Salivary Cortisol in Recovered Patients With Depression
Bhagwagar Z, Hafizi S, Cowen P. Increase in Concentration of Waking Salivary Cortisol in Recovered Patients With Depression. American Journal Of Psychiatry 2003, 160: 1890-1891. PMID: 14514508, DOI: 10.1176/appi.ajp.160.10.1890.Peer-Reviewed Original ResearchConceptsSalivary cortisol levelsCortisol levelsDepressed patientsAcute major depressionComorbid medical conditionsHPA axis abnormalitiesWithdrawal of medicationCoronary heart diseaseElevated plasma cortisol levelsHPA axis activityHealthy comparison subjectsPlasma cortisol levelsHealthy comparison groupClinical recoveryAxis abnormalitiesRecovered patientsAdrenal axisFurther episodesAxis activityHeart diseaseMajor depressionMedical conditionsComparison subjectsPatientsDepressed subjects
2002
Cortisol modulation of 5-HT-mediated growth hormone release in recovered depressed patients
Bhagwagar Z, Hafizi S, Cowen P. Cortisol modulation of 5-HT-mediated growth hormone release in recovered depressed patients. Journal Of Affective Disorders 2002, 72: 249-255. PMID: 12450642, DOI: 10.1016/s0165-0327(01)00467-0.Peer-Reviewed Original ResearchConceptsGrowth hormone releaseDepressed patientsMajor depressionHormone releaseStress-induced cortisol secretionBrain serotonin functionPlasma GH levelsEffects of cortisolEffect of hydrocortisoneCross-over designStressful life eventsGH responseGH levelsSingle doseCortisol secretionGH releaseHealthy controlsSerotonin functionRecurrent depressionTRP infusionHealthy volunteersCortisol modulationDepressive symptomatologyDepressed subjectsEuthymic subjectsState 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
Decreased 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