2024
Amygdala Cannabinoid 1 Receptor, Pain Response, and Emotional Numbing in Trauma-Exposed Individuals
Korem N, Hillmer A, D’Souza D, Nia A, Levy I, Pietrzak R, Harpaz-Rotem I. Amygdala Cannabinoid 1 Receptor, Pain Response, and Emotional Numbing in Trauma-Exposed Individuals. JAMA Network Open 2024, 7: e2432387. PMID: 39250156, PMCID: PMC11385051, DOI: 10.1001/jamanetworkopen.2024.32387.Peer-Reviewed Original Research
2022
Longitudinal volumetric evaluation of hippocampus and amygdala subregions in recent trauma survivors
Ben-Zion Z, Korem N, Spiller TR, Duek O, Keynan JN, Admon R, Harpaz-Rotem I, Liberzon I, Shalev AY, Hendler T. Longitudinal volumetric evaluation of hippocampus and amygdala subregions in recent trauma survivors. Molecular Psychiatry 2022, 28: 657-667. PMID: 36280750, PMCID: PMC9918676, DOI: 10.1038/s41380-022-01842-x.Peer-Reviewed Original ResearchConceptsEmergency departmentAmygdala subregionsPTSD diagnosisGeneral hospital emergency departmentLeft amygdala volumeHospital emergency departmentRight hippocampus volumeCA1 hippocampal subregionRecent trauma survivorsTrauma survivorsCivilian trauma survivorsED admissionEligible participantsHippocampus volumeAmygdala volumeHippocampal subregionsVulnerability traitsDisorder pathogenesisClinical InterviewModerate evidenceHippocampus subregionsTrauma exposureStructural MRIRobust evidenceLower initial volumeEmotional numbing in PTSD is associated with lower amygdala reactivity to pain
Korem N, Duek O, Ben-Zion Z, Kaczkurkin AN, Lissek S, Orederu T, Schiller D, Harpaz-Rotem I, Levy I. Emotional numbing in PTSD is associated with lower amygdala reactivity to pain. Neuropsychopharmacology 2022, 47: 1913-1921. PMID: 35945274, PMCID: PMC9485255, DOI: 10.1038/s41386-022-01405-2.Peer-Reviewed Original ResearchMeSH KeywordsAmygdalaEmotionsHumansMagnetic Resonance ImagingPainStress Disorders, Post-TraumaticVeteransConceptsPosttraumatic stress disorderAmygdala reactivityLower amygdala reactivityHigher pain responseLower amygdala activationAltered pain perceptionAmygdala activationProcessing of painAmygdala responseEmotional numbingPain correlateMild painPain processingPain thresholdPain responsePain perceptionPainControl groupPTSD groupStress disorderRobust reductionAmygdala activityCombat controlsAmygdalaEmotional numbing symptoms
2018
Role of endocannabinoids in the hippocampus and amygdala in emotional memory and plasticity
Segev A, Korem N, Mizrachi Zer-Aviv T, Abush H, Lange R, Sauber G, Hillard C, Akirav I. Role of endocannabinoids in the hippocampus and amygdala in emotional memory and plasticity. Neuropsychopharmacology 2018, 43: 2017-2027. PMID: 29977073, PMCID: PMC6098035, DOI: 10.1038/s41386-018-0135-4.Peer-Reviewed Original ResearchConceptsLong-term potentiationPosttraumatic stress disorderBasolateral amygdalaSituational remindersEmotional memoryFatty acid amide hydrolase inhibitor URB597Fear responsesCB1 receptor antagonist AM251Effects of URB597Receptor antagonist AM251Role of endocannabinoidsDevelopment of PTSDHippocampal CA1 areaTrauma-related cuesEndogenous cannabinoid levelsSevere footshockAntagonist AM251Endocannabinoid contentAEA levelsCA1 areaEffects of exposureRisk factorsFAAH activityTreatment responseFAAH inhibition