2017
Fear extinction in an obsessive-compulsive disorder animal model: Influence of sex and estrous cycle
Reimer A, de Oliveira A, Diniz J, Hoexter M, Miguel E, Milad M, Brandão M. Fear extinction in an obsessive-compulsive disorder animal model: Influence of sex and estrous cycle. Neuropharmacology 2017, 131: 104-115. PMID: 29225044, DOI: 10.1016/j.neuropharm.2017.12.015.Peer-Reviewed Original ResearchConceptsObsessive-compulsive disorderFear extinctionOCD patientsTreatment of OCDFear extinction retentionExtinction retention deficitsFear extinction trainingOCD pathophysiologyOCD-like symptomsAnterior cingulate cortexFear inhibitionExtinction retentionAccount sex differencesEstrous cycleExtinction trainingRetention deficitsRepetitive behaviorsDistinct neurotransmitter systemsMedial prefrontalUntreated OCD patientsCingulate cortexAnimal modelsSelf-grooming behaviorBrain areasEstrous cycle phase
2015
Multicenter Voxel-Based Morphometry Mega-Analysis of Structural Brain Scans in Obsessive-Compulsive Disorder
de Wit S, Alonso P, Schweren L, Mataix-Cols D, Lochner C, Menchón J, Stein D, Fouche J, Soriano-Mas C, Sato J, Hoexter M, Denys D, Nakamae T, Nishida S, Kwon J, Jang J, Busatto G, Cardoner N, Cath D, Fukui K, Jung W, Kim S, Miguel E, Narumoto J, Phillips M, Pujol J, Remijnse P, Sakai Y, Shin N, Yamada K, Veltman D, van den Heuvel O. Multicenter Voxel-Based Morphometry Mega-Analysis of Structural Brain Scans in Obsessive-Compulsive Disorder. FOCUS The Journal Of Lifelong Learning In Psychiatry 2015, 13: 204-212. DOI: 10.1176/appi.focus.130210.Peer-Reviewed Original ResearchHealthy comparison subjectsObsessive-compulsive disorderOCD patientsHealthy subjectsComparison subjectsMatter volumeGreater cerebellar gray matter volumeStructural T1-weighted MRI scansWhite matter brain volumesWhite matter volume differencesT1-weighted MRI scansWhite matter volumePrevious smaller studiesStructural brain scansGray matter volumeCerebellar gray matter volumeVoxel-based morphometryAdult OCD patientsAnterior cingulate cortexAltered neuroplasticityClinical variablesInferior frontal gyrusCognitive dysfunctionDorsomedial prefrontal cortexMRI scans
2014
Multicenter Voxel-Based Morphometry Mega-Analysis of Structural Brain Scans in Obsessive-Compulsive Disorder
de Wit S, Alonso P, Schweren L, Mataix-Cols D, Lochner C, Menchón J, Stein D, Fouche J, Soriano-Mas C, Sato J, Hoexter M, Denys D, Nakamae T, Nishida S, Kwon J, Jang J, Busatto G, Cardoner N, Cath D, Fukui K, Jung W, Kim S, Miguel E, Narumoto J, Phillips M, Pujol J, Remijnse P, Sakai Y, Shin N, Yamada K, Veltman D, van den Heuvel O. Multicenter Voxel-Based Morphometry Mega-Analysis of Structural Brain Scans in Obsessive-Compulsive Disorder. American Journal Of Psychiatry 2014, 171: 340-349. PMID: 24220667, DOI: 10.1176/appi.ajp.2013.13040574.Peer-Reviewed Original ResearchConceptsHealthy comparison subjectsObsessive-compulsive disorderOCD patientsHealthy subjectsComparison subjectsGreater cerebellar gray matter volumeMatter volumeStructural T1-weighted MRI scansWhite matter brain volumesWhite matter volume differencesT1-weighted MRI scansWhite matter volumePrevious smaller studiesStructural brain scansGray matter volumeVoxel-based morphometryAdult OCD patientsCerebellar gray matter volumeAnterior cingulate cortexAltered neuroplasticityClinical variablesInferior frontal gyrusCognitive dysfunctionDorsomedial prefrontal cortexTemporal cortex
2011
Gray Matter Volumes in Obsessive-Compulsive Disorder Before and After Fluoxetine or Cognitive-Behavior Therapy: A Randomized Clinical Trial
Hoexter M, de Souza Duran F, D'Alcante C, Dougherty D, Shavitt R, Lopes A, Diniz J, Deckersbach T, Batistuzzo M, Bressan R, Miguel E, Busatto G. Gray Matter Volumes in Obsessive-Compulsive Disorder Before and After Fluoxetine or Cognitive-Behavior Therapy: A Randomized Clinical Trial. Neuropsychopharmacology 2011, 37: 734-745. PMID: 22030709, PMCID: PMC3260985, DOI: 10.1038/npp.2011.250.Peer-Reviewed Original ResearchConceptsCognitive behavior therapyObsessive-compulsive disorderGray matter volumeLeft putamenClinical trialsOCD patientsGM volumeMatter volumeSignificant GM volume changesPathophysiology of OCDFluoxetine-treated patientsGM volume abnormalitiesMatched-healthy controlsTreatment-naive patientsFirst-line treatmentStructural brain abnormalitiesGM volume changesCBT-treated patientsGroup cognitive behavior therapySmaller GM volumeRegional brain volumesRegional brain morphologyAnterior cingulate cortexStructural magnetic resonanceRegional gray matter volume
2005
Regional Gray Matter Abnormalities in Obsessive-Compulsive Disorder: A Voxel-Based Morphometry Study
Valente A, Miguel E, Castro C, Amaro E, Duran F, Buchpiguel C, Chitnis X, McGuire P, Busatto G. Regional Gray Matter Abnormalities in Obsessive-Compulsive Disorder: A Voxel-Based Morphometry Study. Biological Psychiatry 2005, 58: 479-487. PMID: 15978549, DOI: 10.1016/j.biopsych.2005.04.021.Peer-Reviewed Original ResearchConceptsVoxel-based morphometryObsessive-compulsive disorderGray matterLeft anterior cingulate cortexOCD patientsOCD subjectsParietal associative cortexMagnetic resonance imaging studyStructural magnetic resonance imaging (MRI) studiesRegional gray matter abnormalitiesGray matter reductionsGray matter abnormalitiesResonance imaging studyGray matter volumeAnterior cingulate cortexWarrants further investigationTemporolimbic regionsMedial thalamusBrain abnormalitiesObsessive-compulsive symptom severityHealthy volunteersImplicating dysfunctionMatter volumeAssociative cortexMorphometry study
2001
Regional Cerebral Blood Flow Abnormalities in Early-Onset Obsessive-Compulsive Disorder: An Exploratory SPECT Study
BUSATTO G, BUCHPIGUEL C, ZAMIGNANI D, GARRIDO G, GLABUS M, ROSARIO-CAMPOS M, CASTRO C, MAIA A, ROCHA E, MCGUIRE P, MIGUEL E. Regional Cerebral Blood Flow Abnormalities in Early-Onset Obsessive-Compulsive Disorder: An Exploratory SPECT Study. Journal Of The American Academy Of Child & Adolescent Psychiatry 2001, 40: 347-354. PMID: 11288777, DOI: 10.1097/00004583-200103000-00015.Peer-Reviewed Original ResearchConceptsObsessive-compulsive disorderLate-onset subjectsOCD subjectsRegional cerebral blood flow (rCBF) single-photon emissionCerebral blood flow single photon emissionRegional cerebral blood flow abnormalitiesCerebral blood flow abnormalitiesObsessive-compulsive symptomsPathophysiology of OCDBlood flow abnormalitiesEarly-onset casesOnset obsessive-compulsive disorderFrontal-subcortical circuitsAge of onsetEarly-onset subjectsAnterior cingulate cortexPrefrontal cortex relativeSingle photon emissionStatistical parametric mappingRCBF differencesRight thalamusHealthy controlsFlow abnormalitiesClinical dataCortex relative
2000
A voxel-based investigation of regional cerebral blood flow abnormalities in obsessive–compulsive disorder using single photon emission computed tomography (SPECT)
Busatto G, Zamignani D, Buchpiguel C, Garrido G, Glabus M, Rocha E, Maia A, Rosario-Campos M, Castro C, Furuie S, Gutierrez M, McGuire P, Miguel E. A voxel-based investigation of regional cerebral blood flow abnormalities in obsessive–compulsive disorder using single photon emission computed tomography (SPECT). Psychiatry Research 2000, 99: 15-27. PMID: 10891646, DOI: 10.1016/s0925-4927(00)00050-0.Peer-Reviewed Original ResearchConceptsAnterior cingulate cortexECD uptakeObsessive-compulsive disorderCingulate cortexLateral orbitofrontal cortexObsessive-compulsive symptomsOrbitofrontal cortexControl subjectsOCD patientsLeft dorsal anterior cingulate cortexRegional cerebral blood flow abnormalitiesImaging studiesCerebral blood flow abnormalitiesRight medial orbitofrontal cortexPatient samplesRegional cerebral blood flowPathophysiology of OCDRight lateral orbitofrontal cortexRCBF SPECT studiesHealthy control subjectsBlood flow abnormalitiesCerebral blood flowLarger patient samplesSmall patient sampleLeft lateral orbitofrontal cortex