2024
Intense exercise increases dopamine transporter and neuromelanin concentrations in the substantia nigra in Parkinson’s disease
de Laat B, Hoye J, Stanley G, Hespeler M, Ligi J, Mohan V, Wooten D, Zhang X, Nguyen T, Key J, Colonna G, Huang Y, Nabulsi N, Patel A, Matuskey D, Morris E, Tinaz S. Intense exercise increases dopamine transporter and neuromelanin concentrations in the substantia nigra in Parkinson’s disease. Npj Parkinson's Disease 2024, 10: 34. PMID: 38336768, PMCID: PMC10858031, DOI: 10.1038/s41531-024-00641-1.Peer-Reviewed Original ResearchDopamine transporterSubstantia nigraDopaminergic neuronsDopamine transporter availabilityNeuroprotective effects of exerciseDopaminergic systemClinical progression of PDEarly PDSubstantiaNeuromelanin contentNigraLoss of dopaminergic neuronsEffects of exerciseNM-MRIDopamineSystem of patientsProgressive loss of dopaminergic neuronsParkinson's diseaseClinical progressionProgression of PDNeuroprotective effectsClinical trialsIntensity exercisePET imagingProgressive lossA pilot study to evaluate the effect of CT1812 treatment on synaptic density and other biomarkers in Alzheimer’s disease
van Dyck C, Mecca A, O’Dell R, Bartlett H, Diepenbrock N, Huang Y, Hamby M, Grundman M, Catalano S, Caggiano A, Carson R. A pilot study to evaluate the effect of CT1812 treatment on synaptic density and other biomarkers in Alzheimer’s disease. Alzheimer's Research & Therapy 2024, 16: 20. PMID: 38273408, PMCID: PMC10809445, DOI: 10.1186/s13195-024-01382-2.Peer-Reviewed Original ResearchConceptsMild to moderate dementiaPositron emission tomographyAlzheimer's diseaseVolumetric MRIModerate dementiaClinical rating scalesSynaptic vesicle glycoprotein 2ACerebrospinal fluidMouse model of ADPharmacodynamic effectsPlacebo-controlled phase 1 clinical trialBiomarkers of AD pathologyClinical trialsCognitive measuresNominally significant differencesPhase 1 clinical trialModel of ADHippocampal cortexPhase 1/2 studyRating ScaleParallel-group trialSynaptic densityTrial registrationThe clinical trialPlacebo-controlledSigma-2 receptor ligands
2023
Preclinical evaluation of a brain penetrant PARP PET imaging probe in rat glioblastoma and nonhuman primates
Chen B, Ojha D, Toyonaga T, Tong J, Pracitto R, Thomas M, Liu M, Kapinos M, Zhang L, Zheng M, Holden D, Fowles K, Ropchan J, Nabulsi N, De Feyter H, Carson R, Huang Y, Cai Z. Preclinical evaluation of a brain penetrant PARP PET imaging probe in rat glioblastoma and nonhuman primates. European Journal Of Nuclear Medicine And Molecular Imaging 2023, 50: 2081-2099. PMID: 36849748, DOI: 10.1007/s00259-023-06162-y.Peer-Reviewed Original ResearchConceptsPositron emission tomographyHealthy nonhuman primatesVolume of distributionDistribution volume ratioBrain kineticsRat glioblastoma modelPreclinical evaluationBrain regionsGlioblastoma modelPET tracersNonhuman primatesTumor-bearing ratsEx vivo biodistributionPET imaging resultsActive clinical trialsTreatment of glioblastomaHigh specific uptakeDynamic PET scansNoninvasive quantificationBrain positron emission tomographyNondisplaceable volumeBrain penetrationLow nonspecific uptakePrognostic informationClinical trials
2021
Low-Dose Augmentation With Buprenorphine for Treatment-Resistant Depression: A Multisite Randomized Controlled Trial With Multimodal Assessment of Target Engagement
Lee H, Blumberger D, Lenze E, Anderson S, Barch D, Black K, Cristancho P, Daskalakis Z, Eisenstein S, Huang Y, Li S, Lissemore J, McConathy J, Mulsant B, Rajji T, Reynolds C, Su Y, Tu Z, Voineskos D, Karp J. Low-Dose Augmentation With Buprenorphine for Treatment-Resistant Depression: A Multisite Randomized Controlled Trial With Multimodal Assessment of Target Engagement. Biological Psychiatry Global Open Science 2021, 2: 127-135. PMID: 36325158, PMCID: PMC9616305, DOI: 10.1016/j.bpsgos.2021.09.003.Peer-Reviewed Original ResearchTranscranial magnetic stimulation measuresTreatment-resistant depressionPositron emission tomographyFunctional magnetic resonanceTarget engagementClinical trialsCortical transmissionMontgomery-Åsberg Depression Rating ScalePlacebo-controlled clinical trialEmission tomographyLow-dose augmentationVenlafaxine extended releasePrimary outcome measureBlood oxygen level-dependent (BOLD) responseMajor depressive episodeDepression Rating ScaleExperimental therapeutic approachesYears of ageMultimodal assessmentLevel-dependent responsesMonetary incentive delay taskBrain positron emission tomographyPlacebo groupIncentive delay taskClinical effects
2000
Positron emission tomography study of pindolol occupancy of 5-HT1A receptors in humans: preliminary analyses
Martinez D, Mawlawi O, Hwang D, Kent J, Simpson N, Parsey R, Hashimoto T, Slifstein M, Huang Y, Van Heertum R, Abi-Dargham A, Caltabiano S, Malizia A, Cowley H, Mann J, Laruelle M. Positron emission tomography study of pindolol occupancy of 5-HT1A receptors in humans: preliminary analyses. Nuclear Medicine And Biology 2000, 27: 523-527. PMID: 10962261, DOI: 10.1016/s0969-8051(00)00122-0.Peer-Reviewed Original ResearchConceptsDorsal raphe nucleusClinical studiesPositron emission tomographyPlacebo-controlled clinical studySerotonin reuptake inhibitor therapyCortical regionsAbility of pindololPositron emission tomography studyInitiation of treatmentEmission tomography studiesDRN 5Pindolol augmentationPindolol doseAntidepressant therapyAntidepressant responseInhibitor therapySerotonin transmissionRaphe nucleusScan 3SSRI effectsPostsynaptic receptorsScan 4Clinical trialsOral administrationPreclinical studies