2023
The regional pattern of age-related synaptic loss in the human brain differs from gray matter volume loss: in vivo PET measurement with [11C]UCB-J
Toyonaga T, Khattar N, Wu Y, Lu Y, Naganawa M, Gallezot J, Matuskey D, Mecca A, Pittman B, Dias M, Nabulsi N, Finnema S, Chen M, Arnsten A, Radhakrishnan R, Skosnik P, D’Souza D, Esterlis I, Huang Y, van Dyck C, Carson R. The regional pattern of age-related synaptic loss in the human brain differs from gray matter volume loss: in vivo PET measurement with [11C]UCB-J. European Journal Of Nuclear Medicine And Molecular Imaging 2023, 51: 1012-1022. PMID: 37955791, DOI: 10.1007/s00259-023-06487-8.Peer-Reviewed Original ResearchSynaptic densityAge-related decreaseMagnetic resonance imagingBlood flowAge-related synaptic lossGray matter volume lossSynaptic density lossPositron emission tomography (PET) ligandSynaptic vesicle glycoprotein 2AVivo PET measurementsMedial occipital cortexGray matter volumeAge-related neurodegenerationGray matter regionsCognitive normal subjectsAge-related changesSynaptic lossNerve terminalsWide age rangeOccipital cortexTomography ligandNormal subjectsGM volumeAge-related functional lossesMatter volume
2000
Equilibrium modeling of 5-ht2a receptors with [18f]deuteroaltanserin and pet: feasibility of a constant infusion paradigm
van Dyck C, Soares J, Tan P, Staley J, Baldwin R, Amici L, Fu X, Garg P, Seibyl J, Charney D, Innis R. Equilibrium modeling of 5-ht2a receptors with [18f]deuteroaltanserin and pet: feasibility of a constant infusion paradigm. Nuclear Medicine And Biology 2000, 27: 715-722. PMID: 11150702, DOI: 10.1016/s0969-8051(00)00160-8.Peer-Reviewed Original ResearchConceptsSpecific brain uptakeConstant infusion paradigmBrain uptakeInfusion paradigmConstant infusionPromising positron emission tomography (PET) ligandPositron emission tomography (PET) ligandVenous blood samplingHealthy male subjectsSerotonin 2A receptorStable radiotracerCerebellar ratioInfusion periodBlood samplingTomography ligandH postinjectionTime-activity curvesParent tracerLinear regression analysisMale subjectsPET radioligandSlow metabolismHuman subjectsBrain activityRegression analysis