2023
Brain activation during fear extinction recall in unmedicated patients with obsessive-compulsive disorder
Diniz J, Bazán P, Pereira C, Saraiva E, Ramos P, de Oliveira A, Reimer A, Hoexter M, Miguel E, Shavitt R, Batistuzzo M. Brain activation during fear extinction recall in unmedicated patients with obsessive-compulsive disorder. Psychiatry Research Neuroimaging 2023, 336: 111733. PMID: 37913655, DOI: 10.1016/j.pscychresns.2023.111733.Peer-Reviewed Original ResearchMeSH KeywordsAdultBrainExtinction, PsychologicalFearHumansMental RecallObsessive-Compulsive DisorderConceptsObsessive-compulsive disorderExtinction recallNeutral stimuliFear conditioningFear extinction recallBlood oxygenation level-dependent (BOLD) responseFear conditioning experimentSkin conductance reactivitySpecific brain activation patternsBrain activation patternsSkin conductance responsesLevel-dependent responsesEntire sampleDACC activationUnmedicated adult patientsFear responsesBrain activationAversive stimuliLingual gyrusUnmedicated samplesActivation patternsHealthy participantsRecallOpercular cortexInsular cortex
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