2020
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
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 Research
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 tomography
2017
Quantitative PET Imaging in Drug Development: Estimation of Target Occupancy
Naganawa M, Gallezot JD, Rossano S, Carson RE. Quantitative PET Imaging in Drug Development: Estimation of Target Occupancy. Bulletin Of Mathematical Biology 2017, 81: 3508-3541. PMID: 29230702, DOI: 10.1007/s11538-017-0374-2.Peer-Reviewed Original Research
2015
Receptor Occupancy of the κ-Opioid Antagonist LY2456302 Measured with Positron Emission Tomography and the Novel Radiotracer 11C-LY2795050
Naganawa M, Dickinson GL, Zheng MQ, Henry S, Vandenhende F, Witcher J, Bell R, Nabulsi N, Lin SF, Ropchan J, Neumeister A, Ranganathan M, Tauscher J, Huang Y, Carson RE. Receptor Occupancy of the κ-Opioid Antagonist LY2456302 Measured with Positron Emission Tomography and the Novel Radiotracer 11C-LY2795050. Journal Of Pharmacology And Experimental Therapeutics 2015, 356: 260-266. PMID: 26628406, PMCID: PMC4727157, DOI: 10.1124/jpet.115.229278.Peer-Reviewed Original ResearchMeSH KeywordsAdultBenzamidesBrainCarbon RadioisotopesHumansMaleMiddle AgedPositron-Emission TomographyPyrrolidinesReceptors, Opioid, kappaYoung AdultConceptsHours postdosePositron emission tomographyReceptor occupancyEmission tomographySerious adverse eventsSingle oral dosesImportant therapeutic roleΚ-opioid receptorsSubstance abuse disordersFurther clinical testingHealthy human subjectsMultilinear analysis-1 (MA1) methodAntagonist radiotracersAdverse eventsOral dosesBrain penetrationTherapeutic rolePlasma concentrationsAbuse disordersEthanol consumptionLY2456302Clinical testingNovel radiotracersAlcohol dependenceDistribution volumeTest–Retest Reproducibility of Binding Parameters in Humans with 11C-LY2795050, an Antagonist PET Radiotracer for the κ Opioid Receptor
Naganawa M, Zheng MQ, Henry S, Nabulsi N, Lin SF, Ropchan J, Labaree D, Najafzadeh S, Kapinos M, Tauscher J, Neumeister A, Carson RE, Huang Y. Test–Retest Reproducibility of Binding Parameters in Humans with 11C-LY2795050, an Antagonist PET Radiotracer for the κ Opioid Receptor. Journal Of Nuclear Medicine 2015, 56: 243-248. PMID: 25593119, PMCID: PMC4322754, DOI: 10.2967/jnumed.114.147975.Peer-Reviewed Original ResearchConceptsTest-retest variabilityOpioid receptorsOutcome measuresAbsolute test-retest variabilityMultilinear analysis 1Healthy human subjectsSuitable reference regionTest-retest reproducibilityIntraclass correlation coefficientAntagonist radiotracersHealthy subjectsLY2795050PET scansBrain regionsDistribution volumePET radioligandTest-retest performancePET studiesArterial input functionPET radiotracersHuman subjectsReference regionReceptorsVT valuesKOR
1999
Opiate receptor avidity is reduced bilaterally in rhesus monkeys unilaterally lesioned with MPTP
Cohen R, Carson R, Wyatt R, Doudet D. Opiate receptor avidity is reduced bilaterally in rhesus monkeys unilaterally lesioned with MPTP. Synapse 1999, 33: 282-288. PMID: 10421709, DOI: 10.1002/(sici)1098-2396(19990915)33:4<282::aid-syn5>3.0.co;2-5.Peer-Reviewed Original ResearchMeSH Keywords1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridineAnimalsBasal GangliaBrainCerebellumCerebral CortexDihydroxyphenylalanineFluorine RadioisotopesFunctional LateralityInfusions, ParenteralLimbic SystemMacaca mulattaNaltrexoneNarcotic AntagonistsOrgan SpecificityReceptors, OpioidReceptors, Opioid, kappaReceptors, Opioid, muTomography, Emission-ComputedConceptsOpiate receptor avidityPositron emission tomographyReceptor avidityKappa-opiate receptor antagonistInitial clinical manifestationBasal ganglia functionBasal ganglia circuitsParkinsonian animalsParkinsonian symptomsAnterior putamenClinical manifestationsDopamine innervationGanglia functionReceptor antagonistInternal carotidGanglia circuitsTreatment responsivenessOpiate pathwaysParkinson's diseaseNormal controlsMild lossEmission tomographyRhesus monkeysPET studiesMPTP