2024
11C-UCB-J PET imaging is consistent with lower synaptic density in autistic adults
Matuskey D, Yang Y, Naganawa M, Koohsari S, Toyonaga T, Gravel P, Pittman B, Torres K, Pisani L, Finn C, Cramer-Benjamin S, Herman N, Rosenthal L, Franke C, Walicki B, Esterlis I, Skosnik P, Radhakrishnan R, Wolf J, Nabulsi N, Ropchan J, Huang Y, Carson R, Naples A, McPartland J. 11C-UCB-J PET imaging is consistent with lower synaptic density in autistic adults. Molecular Psychiatry 2024, 1-7. PMID: 39367053, DOI: 10.1038/s41380-024-02776-2.Peer-Reviewed Original ResearchPositron emission tomographySynaptic densityAutistic adultsBrain regionsAutistic featuresClinical phenotype of autismNon-autistic participantsPhenotype of autismNon-autistic individualsRelationship to clinical characteristicsSynaptic vesicle glycoprotein 2AAssociated with clinical measuresPost-mortem studiesPositron emission tomography scanPrefrontal cortexClinician ratingsAutism groupNeural basisBrain areasNeural processesBetween-group differencesVolumetric differencesBinding potentialDensity of synapsesAutismNoninvasive quantification of [18F]SynVesT-1 binding using simplified reference tissue model 2
Naganawa M, Gallezot J, Li S, Nabulsi N, Henry S, Cai Z, Matuskey D, Huang Y, Carson R. Noninvasive quantification of [18F]SynVesT-1 binding using simplified reference tissue model 2. European Journal Of Nuclear Medicine And Molecular Imaging 2024, 1-9. PMID: 39155309, DOI: 10.1007/s00259-024-06885-6.Peer-Reviewed Original ResearchPositron emission tomographyCentrum semiovaleReference regionPositron emission tomography scanTest-retest variabilityTest-retest reproducibilitySynaptic vesicle glycoprotein 2AOne-tissue compartmentArterial blood samplesRetest scansGold standardBrain uptakeEmission tomographyBlood samplesCerebellumNoninvasive quantificationSRTM2ConclusionOur findingsPopulation averageHealthy participantsMetabolite analysisScan timeBPNDSemiovaleSynaptic loss and its association with symptom severity in Parkinson’s disease
Holmes S, Honhar P, Tinaz S, Naganawa M, Hilmer A, Gallezot J, Dias M, Yang Y, Toyonaga T, Esterlis I, Mecca A, Van Dyck C, Henry S, Ropchan J, Nabulsi N, Louis E, Comley R, Finnema S, Carson R, Matuskey D. Synaptic loss and its association with symptom severity in Parkinson’s disease. Npj Parkinson's Disease 2024, 10: 42. PMID: 38402233, PMCID: PMC10894197, DOI: 10.1038/s41531-024-00655-9.Peer-Reviewed Original ResearchSynaptic density lossPositron emission tomographyBinds to synaptic vesicle glycoprotein 2AAssociated with symptom severityParkinson's diseaseHigh-resolution positron emission tomographySynaptic vesicle glycoprotein 2ADuration of illnessPositron emission tomography scanBrain perfusionIllness durationSymptom severitySeverity of symptomsHC groupSubstantia nigraSynaptic densityLiving brainPD individualsClinical insightsDensity lossPD patientsEmission tomographyBrainSynaptic lossSynapse loss
2021
Lower prefrontal cortical synaptic vesicle binding in cocaine use disorder: An exploratory 11C‐UCB‐J positron emission tomography study in humans
Angarita GA, Worhunsky PD, Naganawa M, Toyonaga T, Nabulsi NB, Li C, Esterlis I, Skosnik PD, Radhakrishnan R, Pittman B, Gueorguieva R, Potenza MN, Finnema SJ, Huang Y, Carson RE, Malison RT. Lower prefrontal cortical synaptic vesicle binding in cocaine use disorder: An exploratory 11C‐UCB‐J positron emission tomography study in humans. Addiction Biology 2021, 27: e13123. PMID: 34852401, PMCID: PMC8891080, DOI: 10.1111/adb.13123.Peer-Reviewed Original ResearchConceptsCocaine use disorderAnterior cingulate cortexRecent cocaine useSynaptic densityMedial orbitofrontal cortexPrefrontal cortexCocaine useOrbitofrontal cortexUse disordersVentromedial prefrontal cortexPositron emission tomography scanPositron emission tomography studyEmission tomography scanSynaptic vesicle glycoprotein 2AHealthy control subjectsVolume of distributionEmission tomography studiesAcute cocaineControl subjectsTomography scanCocaine exposurePreclinical studiesHC subjectsDendritic spinesLifetime cocaine use