2023
Imaging the brain’s immune response to alcohol with [11C]PBR28 TSPO Positron Emission Tomography
Raval N, Angarita G, Matuskey D, Miller R, Drake L, Kapinos M, Nabulsi N, Huang Y, Carson R, O’Malley S, Cosgrove K, Hillmer A. Imaging the brain’s immune response to alcohol with [11C]PBR28 TSPO Positron Emission Tomography. Molecular Psychiatry 2023, 28: 3384-3390. PMID: 37532797, PMCID: PMC10743097, DOI: 10.1038/s41380-023-02198-6.Peer-Reviewed Original ResearchConceptsVolume of distributionBlood alcohol levelsPositron emission tomographyBrain immune responseImmune responseAlcohol challengeEmission tomographyPeak blood alcohol levelsMultilinear analysis 1Peripheral immune functionVivo human evidenceLaboratory alcohol challengeTSPO positron emission tomographyBinge levelsPlasma cytokinesImmune dysfunctionNeuroimmune systemIL-6MCP-1Cytokines TNFAcute effectsScan dayArterial bloodHuman evidenceImmune function
2022
Neurotransmitter transporter occupancy following administration of centanafadine sustained-release tablets: A phase 1 study in healthy male adults
Matuskey D, Gallezot J, Nabulsi N, Henry S, Torres K, Dias M, Angarita G, Huang Y, Shoaf S, Carson R, Mehrotra S. Neurotransmitter transporter occupancy following administration of centanafadine sustained-release tablets: A phase 1 study in healthy male adults. Journal Of Psychopharmacology 2022, 37: 164-171. PMID: 36515395, PMCID: PMC9912308, DOI: 10.1177/02698811221140008.Peer-Reviewed Original ResearchAge, gender and body-mass-index relationships with in vivo CB1 receptor availability in healthy humans measured with [11C]OMAR PET
Radhakrishnan R, Worhunsky PD, Zheng MQ, Najafzadeh S, Gallezot JD, Planeta B, Henry S, Nabulsi N, Ranganathan M, Skosnik PD, Pittman B, Cyril D'Souza D, Carson RE, Huang Y, Potenza MN, Matuskey D. Age, gender and body-mass-index relationships with in vivo CB1 receptor availability in healthy humans measured with [11C]OMAR PET. NeuroImage 2022, 264: 119674. PMID: 36243269, DOI: 10.1016/j.neuroimage.2022.119674.Peer-Reviewed Original Research
2021
Imaging brain cortisol regulation in PTSD with a target for 11β-hydroxysteroid dehydrogenase type 1
Bhatt S, Hillmer AT, Rusowicz A, Nabulsi N, Matuskey D, Angarita GA, Najafzadeh S, Kapinos M, Southwick SM, Krystal JH, Carson RE, Huang Y, Cosgrove KP. Imaging brain cortisol regulation in PTSD with a target for 11β-hydroxysteroid dehydrogenase type 1. Journal Of Clinical Investigation 2021, 131: e150452. PMID: 34651587, PMCID: PMC8516462, DOI: 10.1172/jci150452.Peer-Reviewed Original ResearchConceptsPosttraumatic stress disorderPositron emission tomographyVolume of distributionDehydrogenase type 1Trauma-exposed controlsPTSD groupTranslocator proteinType 1Veterans Affairs (VA) National CenterOverall PTSD severityBrain glucocorticoidBrain immuneMethodsSixteen individualsPeripheral cortisolMicroglial markersImmune suppressionTranslational Science AwardsCortisol levelsNIH National CenterTC groupCortisol regulationEmission tomographyStress disorderLower PTSD symptomsPTSD symptomsEffect of age on brain metabotropic glutamate receptor subtype 5 measured with [18F]FPEB PET
Mecca AP, Rogers K, Jacobs Z, McDonald JW, Michalak HR, DellaGioia N, Zhao W, Hillmer AT, Nabulsi N, Lim K, Ropchan J, Huang Y, Matuskey D, Esterlis I, Carson RE, van Dyck CH. Effect of age on brain metabotropic glutamate receptor subtype 5 measured with [18F]FPEB PET. NeuroImage 2021, 238: 118217. PMID: 34052464, PMCID: PMC8378132, DOI: 10.1016/j.neuroimage.2021.118217.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overAgingBrain ChemistryFemaleFluorine RadioisotopesFluorodeoxyglucose F18Gray MatterHippocampusHumansMagnetic Resonance ImagingMaleMiddle AgedNeuroimagingOrgan SizePositron-Emission TomographyRadiopharmaceuticalsReceptor, Metabotropic Glutamate 5Young AdultConceptsMetabotropic glutamate receptor subtype 5MGluR5 availabilityMultiple brain regionsTissue lossSubtype 5Association cortexPrimary analysisBrain regionsAge-related molecular changesBrain glutamatergic systemBrain tissue lossNon-significant trendPartial volume correctionPositron emission tomographyBrain mGluR5Effect of ageAge-related declineGlutamatergic systemInverse associationTissue alterationsDistribution volumeEmission tomographyOlder ageCognitive functionExploratory analysisComparison of [11C]UCB-J and [18F]FDG PET in Alzheimer’s disease: A tracer kinetic modeling study
Chen MK, Mecca AP, Naganawa M, Gallezot JD, Toyonaga T, Mondal J, Finnema SJ, Lin SF, O’Dell R, McDonald JW, Michalak HR, Wyk B, Nabulsi NB, Huang Y, Arnsten AF, van Dyck CH, Carson RE. Comparison of [11C]UCB-J and [18F]FDG PET in Alzheimer’s disease: A tracer kinetic modeling study. Cerebrovascular And Brain Metabolism Reviews 2021, 41: 2395-2409. PMID: 33757318, PMCID: PMC8393289, DOI: 10.1177/0271678x211004312.Peer-Reviewed Original ResearchConceptsSynaptic densityMedial temporal regionsAlzheimer's diseaseNeocortical regionsTemporal regionsRelative outcome measuresMedial temporal lobeVivo PET imagingJ bindingOutcome measuresTemporal lobeMagnitude of reductionCN participantsBrain regionsAD participantsDiseasePET imagingConcordant reductionNormal participantsSynaptic vesiclesPerfusionMetabolismSuitable markerParticipantsSimilar patternPET Imaging Estimates of Regional Acetylcholine Concentration Variation in Living Human Brain
Smart K, Naganawa M, Baldassarri SR, Nabulsi N, Ropchan J, Najafzadeh S, Gao H, Navarro A, Barth V, Esterlis I, Cosgrove KP, Huang Y, Carson RE, Hillmer AT. PET Imaging Estimates of Regional Acetylcholine Concentration Variation in Living Human Brain. Cerebral Cortex 2021, 31: 2787-2798. PMID: 33442731, PMCID: PMC8355478, DOI: 10.1093/cercor/bhaa387.Peer-Reviewed Original ResearchConceptsACh concentrationHuman volunteersHigh ACh concentrationsMuscarinic antagonist scopolamineHealthy human volunteersHuman brainCholinergic receptorsNicotine challengeAntagonist scopolaminePreclinical studiesStriatal regionsPET scansEndogenous neurotransmittersNeuropsychiatric diseasesNonhuman primatesWhole-brain imagesDrug occupancyNicotinic ligandsClinical populationsBrainAcetylcholineDistinct functional rolesStriatumVolunteersFunctional role
2020
Reduced synaptic vesicle protein 2A binding in temporal lobe epilepsy: A [11C]UCB‐J positron emission tomography study
Finnema SJ, Toyonaga T, Detyniecki K, Chen M, Dias M, Wang Q, Lin S, Naganawa M, Gallezot J, Lu Y, Nabulsi NB, Huang Y, Spencer DD, Carson RE. Reduced synaptic vesicle protein 2A binding in temporal lobe epilepsy: A [11C]UCB‐J positron emission tomography study. Epilepsia 2020, 61: 2183-2193. PMID: 32944949, DOI: 10.1111/epi.16653.Peer-Reviewed Original ResearchConceptsMedial temporal lobe sclerosisTemporal lobe epilepsyTLE subjectsPositron emission tomographyLobe epilepsyJ BPSynaptic vesicle protein 2APartial volume correctionTemporal lobe sclerosisPositron emission tomography studyEmission tomography studiesSeizure onset zonePromising biomarker approachJ bindingPresurgical selectionSclerotic hippocampusHippocampal asymmetryTLE patientsRegional binding patternsControl subjectsCentrum semiovaleContralateral regionsEpilepsy patientsOutcome measuresOnset zoneFirst-in-Human Evaluation of 18F-SynVesT-1, a Radioligand for PET Imaging of Synaptic Vesicle Glycoprotein 2A
Naganawa M, Li S, Nabulsi N, Henry S, Zheng MQ, Pracitto R, Cai Z, Gao H, Kapinos M, Labaree D, Matuskey D, Huang Y, Carson RE. First-in-Human Evaluation of 18F-SynVesT-1, a Radioligand for PET Imaging of Synaptic Vesicle Glycoprotein 2A. Journal Of Nuclear Medicine 2020, 62: 561-567. PMID: 32859701, PMCID: PMC8049363, DOI: 10.2967/jnumed.120.249144.Peer-Reviewed Original ResearchConceptsC-UCBSynaptic densityRegional time-activity curvesTime-activity curvesDistribution volumeMetabolite-corrected arterial input functionPET imagingMultilinear analysis 1Synaptic vesicle glycoprotein 2AAntiepileptic drug levetiracetamTotal distribution volumeNondisplaceable distribution volumeCentrum semiovaleBlocking doseHealthy volunteersHuman studiesDrug levetiracetamLassen plotNeuropsychiatric disordersPET radioligandArterial input functionNonhuman primatesLevetiracetamReference regionRadioligandFirst-in-Human Assessment of 11C-LSN3172176, an M1 Muscarinic Acetylcholine Receptor PET Radiotracer
Naganawa M, Nabulsi N, Henry S, Matuskey D, Lin SF, Slieker L, Schwarz AJ, Kant N, Jesudason C, Ruley K, Navarro A, Gao H, Ropchan J, Labaree D, Carson RE, Huang Y. First-in-Human Assessment of 11C-LSN3172176, an M1 Muscarinic Acetylcholine Receptor PET Radiotracer. Journal Of Nuclear Medicine 2020, 62: 553-560. PMID: 32859711, PMCID: PMC8049371, DOI: 10.2967/jnumed.120.246967.Peer-Reviewed Original ResearchConceptsSimplified reference tissue modelM1 receptorsHealthy subjectsMuscarinic acetylcholine receptor subtype M1Distribution volumePET radiotracersAbsolute test-retest variabilityExcellent test-retest reproducibilityReference tissue model 2Total distribution volumeSuitable reference regionTest-retest reproducibilityTest-retest variabilityReference regionTest-retest protocolNondisplaceable distribution volumeReference tissue modelTest-retest studySubtypes M1Preclinical studiesRegional time-activity curvesAcetylcholine concentrationHuman studiesReceptor occupancyTime-activity curvesBinding of the synaptic vesicle radiotracer [11C]UCB-J is unchanged during functional brain activation using a visual stimulation task
Smart K, Liu H, Matuskey D, Chen MK, Torres K, Nabulsi N, Labaree D, Ropchan J, Hillmer AT, Huang Y, Carson RE. Binding of the synaptic vesicle radiotracer [11C]UCB-J is unchanged during functional brain activation using a visual stimulation task. Cerebrovascular And Brain Metabolism Reviews 2020, 41: 1067-1079. PMID: 32757741, PMCID: PMC8054713, DOI: 10.1177/0271678x20946198.Peer-Reviewed Original ResearchConceptsVisual cortexVisual stimulationPositron emission tomography radioligandBrain activationBlood flow increasesVolume of distributionPrimary visual cortexCheckerboard visual stimulationFunctional brain activationFunctional magnetic resonanceReference tissue modelFMRI BOLD responsesSynaptic densityVisual stimulation taskOne-tissue compartment modelHealthy volunteersNeuronal firingTomography radioligandPET scansTissue influxVivo measuresRobust increaseBOLD responseTracer influxStimulation taskSimplified Quantification of 11C-UCB-J PET Evaluated in a Large Human Cohort
Naganawa M, Gallezot JD, Finnema SJ, Matuskey D, Mecca A, Nabulsi NB, Labaree D, Ropchan J, Malison RT, D'Souza DC, Esterlis I, Detyniecki K, van Dyck CH, Huang Y, Carson RE. Simplified Quantification of 11C-UCB-J PET Evaluated in a Large Human Cohort. Journal Of Nuclear Medicine 2020, 62: 418-421. PMID: 32646875, PMCID: PMC8049341, DOI: 10.2967/jnumed.120.243949.Peer-Reviewed Original ResearchIn vivo measurement of widespread synaptic loss in Alzheimer's disease with SV2A PET
Mecca AP, Chen M, O'Dell RS, Naganawa M, Toyonaga T, Godek TA, Harris JE, Bartlett HH, Zhao W, Nabulsi NB, Vander Wyk B, Varma P, Arnsten AFT, Huang Y, Carson RE, van Dyck C. In vivo measurement of widespread synaptic loss in Alzheimer's disease with SV2A PET. Alzheimer's & Dementia 2020, 16: 974-982. PMID: 32400950, PMCID: PMC7383876, DOI: 10.1002/alz.12097.Peer-Reviewed Original ResearchConceptsWidespread synaptic lossEarly Alzheimer's diseaseSynaptic lossAlzheimer's diseaseSynaptic vesicle glycoprotein 2AGray matter volumeMajor structural correlatePositron emission tomography (PET) imagingEmission Tomography ImagingDistribution volume ratioCerebellar reference regionNeocortical brain regionsSynaptic densityAD progressionConsistent pathologyPotential therapyMatter volumePromising biomarkerCognitive impairmentCN participantsBrain regionsDiseaseTomography imagingNormal participantsStructural correlatesPTSD is associated with neuroimmune suppression: evidence from PET imaging and postmortem transcriptomic studies
Bhatt S, Hillmer AT, Girgenti MJ, Rusowicz A, Kapinos M, Nabulsi N, Huang Y, Matuskey D, Angarita GA, Esterlis I, Davis MT, Southwick SM, Friedman MJ, Duman R, Carson R, Krystal J, Pietrzak R, Cosgrove K. PTSD is associated with neuroimmune suppression: evidence from PET imaging and postmortem transcriptomic studies. Nature Communications 2020, 11: 2360. PMID: 32398677, PMCID: PMC7217830, DOI: 10.1038/s41467-020-15930-5.Peer-Reviewed Original ResearchMeSH KeywordsAcetamidesAdaptor Proteins, Signal TransducingAdultBrainCase-Control StudiesFemaleGene Expression ProfilingHealthy VolunteersHumansMaleMicrogliaMiddle AgedPositron-Emission TomographyPyridinesRadiopharmaceuticalsReceptors, GABAReceptors, Tumor Necrosis Factor, Member 14Sex FactorsStress Disorders, Post-TraumaticYoung AdultConceptsPosttraumatic stress disorderPeripheral immune activationImmune activationHigher C-reactive protein levelsC-reactive protein levelsTSPO availabilityTranslocator proteinBrain microglial activationTomography brain imagingStress-related pathophysiologyPositron emission tomography (PET) brain imagingNeuroimmune activationMicroglial activationPTSD symptom severityImmunologic regulationPostmortem studiesPTSD subgroupHealthy individualsSymptom severityTrauma exposurePTSD groupStress disorderLower relative expressionBrain imagingPET imagingInverse changes in raphe and cortical 5‐HT1B receptor availability after acute tryptophan depletion in healthy human subjects
Baldassarri SR, Park E, Finnema SJ, Planeta B, Nabulsi N, Najafzadeh S, Ropchan J, Huang Y, Hannestad J, Maloney K, Bhagwagar Z, Carson RE. Inverse changes in raphe and cortical 5‐HT1B receptor availability after acute tryptophan depletion in healthy human subjects. Synapse 2020, 74: e22159. PMID: 32324935, PMCID: PMC7426238, DOI: 10.1002/syn.22159.Peer-Reviewed Original ResearchSeparating dopamine D2 and D3 receptor sources of [11C]-(+)-PHNO binding potential: Independent component analysis of competitive binding
Smart K, Gallezot JD, Nabulsi N, Labaree D, Zheng MQ, Huang Y, Carson RE, Hillmer AT, Worhunsky PD. Separating dopamine D2 and D3 receptor sources of [11C]-(+)-PHNO binding potential: Independent component analysis of competitive binding. NeuroImage 2020, 214: 116762. PMID: 32201327, PMCID: PMC7263955, DOI: 10.1016/j.neuroimage.2020.116762.Peer-Reviewed Original ResearchKinetic Modeling and Test–Retest Reproducibility of 11C-EKAP and 11C-FEKAP, Novel Agonist Radiotracers for PET Imaging of the κ-Opioid Receptor in Humans
Naganawa M, Li S, Nabulsi N, Lin SF, Labaree D, Ropchan J, Gao H, Mei M, Henry S, Matuskey D, Carson RE, Huang Y. Kinetic Modeling and Test–Retest Reproducibility of 11C-EKAP and 11C-FEKAP, Novel Agonist Radiotracers for PET Imaging of the κ-Opioid Receptor in Humans. Journal Of Nuclear Medicine 2020, 61: 1636-1642. PMID: 32169917, PMCID: PMC9364890, DOI: 10.2967/jnumed.119.227694.Peer-Reviewed Original ResearchBody Mass Index and Age Effects on Brain 11β-Hydroxysteroid Dehydrogenase Type 1: a Positron Emission Tomography Study
Bini J, Bhatt S, Hillmer AT, Gallezot JD, Nabulsi N, Pracitto R, Labaree D, Kapinos M, Ropchan J, Matuskey D, Sherwin RS, Jastreboff AM, Carson RE, Cosgrove K, Huang Y. Body Mass Index and Age Effects on Brain 11β-Hydroxysteroid Dehydrogenase Type 1: a Positron Emission Tomography Study. Molecular Imaging And Biology 2020, 22: 1124-1131. PMID: 32133575, PMCID: PMC7351613, DOI: 10.1007/s11307-020-01490-z.Peer-Reviewed Original ResearchConceptsBody mass indexPositron emission tomographyDehydrogenase type 1Mass indexObese individualsEnzyme 11β-hydroxysteroid dehydrogenase type 1Whole brainType 1Higher body mass indexPositron emission tomography studyVT valuesSevere Alzheimer's diseaseEmission tomography studiesSteroid stress hormonesAge-associated increaseMean whole brainSignificant age-associated increaseRegional distribution volumesVisceral adiposityInsulin resistanceActive cortisolExcess cortisolInactive cortisoneMemory dysfunctionParietal lobeSynaptic Changes in Parkinson Disease Assessed with in vivo Imaging
Matuskey D, Tinaz S, Wilcox KC, Naganawa M, Toyonaga T, Dias M, Henry S, Pittman B, Ropchan J, Nabulsi N, Suridjan I, Comley RA, Huang Y, Finnema SJ, Carson RE. Synaptic Changes in Parkinson Disease Assessed with in vivo Imaging. Annals Of Neurology 2020, 87: 329-338. PMID: 31953875, PMCID: PMC7065227, DOI: 10.1002/ana.25682.Peer-Reviewed Original ResearchConceptsSubstantia nigraParkinson's diseaseNormal controlsSynaptic changesPositron emission tomographic imagingSynaptic vesicle glycoprotein 2AParkinson's disease groupParkinson's disease subjectsEmission tomographic imagingPrimary brain areasAnn NeurolPostmortem autoradiographyBilateral diseaseNonmotor symptomsSynaptic lossNeuronal alterationsRelevant cortical areasStriatal dopamineBrainstem nucleiDisease groupDopamine neuronsLocus coeruleusCortical areasRed nucleusDopamine systemTobacco Smoking in People Is Not Associated with Altered 18-kDa Translocator Protein Levels: A PET Study
Hillmer AT, Matuskey D, Huang Y, Nabulsi N, Ropchan J, Carson RE, O'Malley SS, Cosgrove KP. Tobacco Smoking in People Is Not Associated with Altered 18-kDa Translocator Protein Levels: A PET Study. Journal Of Nuclear Medicine 2020, 61: 1200-1204. PMID: 32005773, PMCID: PMC7413239, DOI: 10.2967/jnumed.119.237735.Peer-Reviewed Original ResearchConceptsTobacco smokingTobacco smokersTSPO levelsImmune systemPET studiesBrain immune systemBrain TSPO levelsPrimary immunocompetent cellsPrevious PET studiesTranslocator proteinTranslocator protein (TSPO) levelsInflammatory effectsImmunocompetent cellsArterial bloodTobacco smokePET scansNonsmokersSmokersRadiotracer concentrationMedium effect sizeSmokingPET imagingBrainProtein levelsSignificant differences