2022
Age, 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 ResearchConceptsBody mass indexPosterior cingulateHealthy individualsCB1 receptor availabilityPositron emission tomography studyRange of BMIEmission tomography studiesAge-related declineMass indexAutonomic tone
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
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 zoneBody 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 lobe
2019
Kappa-opioid receptors, dynorphin, and cocaine addiction: a positron emission tomography study
Martinez D, Slifstein M, Matuskey D, Nabulsi N, Zheng MQ, Lin SF, Ropchan J, Urban N, Grassetti A, Chang D, Salling M, Foltin R, Carson RE, Huang Y. Kappa-opioid receptors, dynorphin, and cocaine addiction: a positron emission tomography study. Neuropsychopharmacology 2019, 44: 1720-1727. PMID: 31026862, PMCID: PMC6785004, DOI: 10.1038/s41386-019-0398-4.Peer-Reviewed Original ResearchConceptsCocaine use disorderStress-induced relapsePositron emission tomographyCocaine bingeKappa-opioid receptor/dynorphin systemKOR selective agonistPositron emission tomography studyKappa-opioid receptorsCold pressor testCocaine self-administration sessionsEmission tomography studiesSelf-administration sessionsStress-induced cocaineEndogenous dynorphinDynorphin systemHealthy controlsPressor testSelective agonistPET scansAnimal studiesKOR bindingReceptor availabilitySignificant associationBrain regionsEmission tomographyA single‐center, open‐label positron emission tomography study to evaluate brivaracetam and levetiracetam synaptic vesicle glycoprotein 2A binding in healthy volunteers
Finnema SJ, Rossano S, Naganawa M, Henry S, Gao H, Pracitto R, Maguire RP, Mercier J, Kervyn S, Nicolas J, Klitgaard H, DeBruyn S, Otoul C, Martin P, Muglia P, Matuskey D, Nabulsi NB, Huang Y, Kaminski RM, Hannestad J, Stockis A, Carson RE. A single‐center, open‐label positron emission tomography study to evaluate brivaracetam and levetiracetam synaptic vesicle glycoprotein 2A binding in healthy volunteers. Epilepsia 2019, 60: 958-967. PMID: 30924924, PMCID: PMC6532410, DOI: 10.1111/epi.14701.Peer-Reviewed Original ResearchMeSH KeywordsAdministration, OralAnticonvulsantsCarbon RadioisotopesFemaleHealthy VolunteersHumansInhibitory Concentration 50Injections, IntravenousLevetiracetamMagnetic Resonance ImagingMaleMembrane GlycoproteinsNerve Tissue ProteinsNeuroimagingPositron-Emission TomographyProtein BindingPyrrolidinonesConceptsSynaptic vesicle glycoprotein 2AIntravenous brivaracetamHours postdoseBrain penetrationHealthy volunteersDaily oral dosingPositron emission tomography studyFurther clinical studiesEmission tomography studiesPlasma concentration relationshipPositron emission tomography (PET) tracerEmission tomography tracerVivo animal studiesAcute seizuresAntiepileptic drugsTherapeutic dosesCohort 2Oral dosingCohort 1Clinical studiesCohort 3LevetiracetamAnimal studiesRelevant dosesBrivaracetam
2017
Use of Electronic Cigarettes Leads to Significant Beta2-Nicotinic Acetylcholine Receptor Occupancy: Evidence From a PET Imaging Study
Baldassarri SR, Hillmer AT, Anderson JM, Jatlow P, Nabulsi N, Labaree D, Cosgrove KP, O’Malley S, Eissenberg T, Krishnan-Sarin S, Esterlis I. Use of Electronic Cigarettes Leads to Significant Beta2-Nicotinic Acetylcholine Receptor Occupancy: Evidence From a PET Imaging Study. Nicotine & Tobacco Research 2017, 20: 425-433. PMID: 28460123, PMCID: PMC5896427, DOI: 10.1093/ntr/ntx091.Peer-Reviewed Original ResearchConceptsBlood nicotine levelsAlternative nicotine delivery systemsNicotinic acetylcholine receptorsElectronic cigarettesNicotine delivery systemsCigarette smokersCigarette smokingTobacco cigarettesReceptor occupancyAbuse liabilityAcetylcholine receptorsNicotine levelsEC challengeCigarette smoking groupPositron emission tomography studyTobacco cigarette smokingEmission tomography studiesPET imaging studiesSmoking groupNeurologic effectsNicotine challengeNicotine addictionNicotine usersNovel radiotracersImaging studies
2014
Evaluation of the agonist PET radioligand [11C]GR103545 to image kappa opioid receptor in humans: Kinetic model selection, test–retest reproducibility and receptor occupancy by the antagonist PF-04455242
Naganawa M, Jacobsen LK, Zheng MQ, Lin SF, Banerjee A, Byon W, Weinzimmer D, Tomasi G, Nabulsi N, Grimwood S, Badura LL, Carson RE, McCarthy TJ, Huang Y. Evaluation of the agonist PET radioligand [11C]GR103545 to image kappa opioid receptor in humans: Kinetic model selection, test–retest reproducibility and receptor occupancy by the antagonist PF-04455242. NeuroImage 2014, 99: 69-79. PMID: 24844744, PMCID: PMC4140089, DOI: 10.1016/j.neuroimage.2014.05.033.Peer-Reviewed Original ResearchConceptsKappa-opioid receptorsTest-retest reproducibilityTest-retest variabilityAbsolute test-retest variabilityPF-04455242Time-activity curvesIntra-class coefficientOpioid receptorsRegional time-activity curvesMetabolite-corrected arterial input functionHuman positron emission tomography studiesPositron emission tomography studySelective KOR antagonistEmission tomography studiesReceptor occupancy studiesSuitable reference regionHalf maximal inhibitory concentrationAgonist tracersRegional VTAgonist PET radioligandOral doseKOR antagonistsMaximal inhibitory concentrationOral administrationPreclinical models
2012
Affinity and selectivity of [11C]‐(+)‐PHNO for the D3 and D2 receptors in the rhesus monkey brain in vivo
Gallezot J, Beaver JD, Gunn RN, Nabulsi N, Weinzimmer D, Singhal T, Slifstein M, Fowles K, Ding Y, Huang Y, Laruelle M, Carson RE, Rabiner EA. Affinity and selectivity of [11C]‐(+)‐PHNO for the D3 and D2 receptors in the rhesus monkey brain in vivo. Synapse 2012, 66: 489-500. PMID: 22213512, DOI: 10.1002/syn.21535.Peer-Reviewed Original ResearchConceptsHuman positron emission tomography studiesPositron emission tomography studyRhesus monkey brainEmission tomography studiesDopamine D2 receptorsRegional binding potentialDopamine D3 receptorAnesthetized primatePHNO signalFuture PET studiesInfusion paradigmD2 receptorsMonkey brainPrimate brainVivo affinityRhesus monkeysPET studiesTomography studyD2RPHNOBrainReceptorsD3RRegional fractionHuman brain
2011
The Effect of Early Trauma Exposure on Serotonin Type 1B Receptor Expression Revealed by Reduced Selective Radioligand Binding
Murrough JW, Czermak C, Henry S, Nabulsi N, Gallezot JD, Gueorguieva R, Planeta-Wilson B, Krystal JH, Neumaier JF, Huang Y, Ding YS, Carson RE, Neumeister A. The Effect of Early Trauma Exposure on Serotonin Type 1B Receptor Expression Revealed by Reduced Selective Radioligand Binding. JAMA Psychiatry 2011, 68: 892-900. PMID: 21893657, PMCID: PMC3244836, DOI: 10.1001/archgenpsychiatry.2011.91.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAge FactorsBrainCarbon RadioisotopesCross-Sectional StudiesDepressive Disorder, MajorFemaleHumansMaleMiddle AgedPiperazinesPositron-Emission TomographyPsychiatric Status Rating ScalesPyrrolidinonesRadioligand AssayReceptor, Serotonin, 5-HT1BSerotonin 5-HT1 Receptor AntagonistsStress Disorders, Post-TraumaticTrauma Severity IndicesWounds and InjuriesConceptsPosttraumatic stress disorderHealthy control participantsEarly trauma exposureTrauma exposureReceptor expressionCause of PTSDVeterans Affairs Medical CenterMajor depression comorbidityPositron emission tomography studyControl participantsMain outcome measuresRecent animal modelsTrauma-exposed control participantsSevere trauma exposureEmission tomography studiesFirst trauma exposureLimbic corticostriatal circuitsAnterior cingulate cortexPositron emission tomographyPTSD symptom severityDepression comorbiditySerotonergic dysfunctionMedical CenterOutcome measuresStudy group