2021
QSM is an imaging biomarker for chronic glial activation in multiple sclerosis lesions
Gillen KM, Mubarak M, Park C, Ponath G, Zhang S, Dimov A, Levine‐Ritterman M, Toro S, Huang W, Amici S, Kaunzner UW, Gauthier SA, Guerau‐de‐Arellano M, Wang Y, Nguyen TD, Pitt D. QSM is an imaging biomarker for chronic glial activation in multiple sclerosis lesions. Annals Of Clinical And Translational Neurology 2021, 8: 877-886. PMID: 33704933, PMCID: PMC8045922, DOI: 10.1002/acn3.51338.Peer-Reviewed Original ResearchConceptsNormal-appearing white matterMyeloid cellsLesion rimReactive oxygen speciesQuantitative susceptibility mappingChronic active lesionsChronic glial activationPro-inflammatory cytokinesBlood-brain barrierWhite matter lesionsAdjacent normal-appearing white matterMultiple sclerosis lesionsGlial activationActivated microgliaHistopathological correlatesChronic inflammationActive lesionsCytokine productionMatter lesionsMS lesionsWhite matterHuman-induced pluripotent stem cellsSclerosis lesionsLesionsLesion perimeter
2019
Quantifying the Metabolic Signature of Multiple Sclerosis by in vivo Proton Magnetic Resonance Spectroscopy: Current Challenges and Future Outlook in the Translation From Proton Signal to Diagnostic Biomarker
Swanberg KM, Landheer K, Pitt D, Juchem C. Quantifying the Metabolic Signature of Multiple Sclerosis by in vivo Proton Magnetic Resonance Spectroscopy: Current Challenges and Future Outlook in the Translation From Proton Signal to Diagnostic Biomarker. Frontiers In Neurology 2019, 10: 1173. PMID: 31803127, PMCID: PMC6876616, DOI: 10.3389/fneur.2019.01173.Peer-Reviewed Original ResearchMultiple sclerosisProton magnetic resonance spectroscopyDiagnostic biomarkersH-MRSStudy designVivo proton magnetic resonance spectroscopyCentral nervous system tissueNormal-appearing white matterNumerous metabolic alterationsPotential diagnostic biomarkersNervous system tissueMetabolic abnormalitiesH-MRS dataSpinal cordLesion compositionSclerosisMetabolic alterationsWhite matterGray matterMagnetic resonance spectroscopyMetabolic signaturesBiomarkersExperimental cohortLines of evidenceTechnical considerations
2018
Significance and In Vivo Detection of Iron-Laden Microglia in White Matter Multiple Sclerosis Lesions
Gillen KM, Mubarak M, Nguyen TD, Pitt D. Significance and In Vivo Detection of Iron-Laden Microglia in White Matter Multiple Sclerosis Lesions. Frontiers In Immunology 2018, 9: 255. PMID: 29515576, PMCID: PMC5826076, DOI: 10.3389/fimmu.2018.00255.Peer-Reviewed Original ResearchConceptsCentral nervous systemChronic active lesionsMultiple sclerosisActive lesionsWhite matterWhite matter MS lesionsQuantitative susceptibility mappingNovel MS therapiesResident immune cellsChronic inflammatory activityWhite matter lesionsMyeloid cell activationAdjacent white matterWhite matter multiple sclerosis lesionsChronic tissue damageMultiple sclerosis lesionsMS therapyInflammatory activityMagnetic resonance imaging techniquesChronic inflammationMatter lesionsAged brainImmune cellsMyelin phagocytosisChronic diseases
2015
Analysis of miRNA in Normal Appearing White Matter to Identify Altered CNS Pathways in Multiple Sclerosis
Guerau-de-Arellano M, Liu Y, Meisen WH, Pitt D, Racke MK, Lovett-Racke AE. Analysis of miRNA in Normal Appearing White Matter to Identify Altered CNS Pathways in Multiple Sclerosis. Journal Of Autoimmune Disorders 2015, 1 PMID: 26894232, PMCID: PMC4755487, DOI: 10.21767/2471-8153.100006.Peer-Reviewed Original ResearchCNS pathwaysMS patientsNormal Appearing White MatterBlood-brain barrierMultiple sclerosis susceptibilityPatients' CNSCNS inflammationMultiple sclerosisNeuroprotective mechanismsPost-transcriptional dysregulationControl subjectsUnderlying dysregulationImmune systemWhite matterCNSInflammationMiR-191Target predicationNAWMMiRNA profiling studiesPatientsMRNA analysisMAPK pathwayGenetic contributorsPathway analysis
2013
Quantitative Susceptibility Mapping of Multiple Sclerosis Lesions at Various Ages
Chen W, Gauthier SA, Gupta A, Comunale J, Liu T, Wang S, Pei M, Pitt D, Wang Y. Quantitative Susceptibility Mapping of Multiple Sclerosis Lesions at Various Ages. Radiology 2013, 271: 183-92. PMID: 24475808, PMCID: PMC4263629, DOI: 10.1148/radiol.13130353.Peer-Reviewed Original ResearchConceptsNormal-appearing white matterMS lesionsMultiple sclerosis lesionsEnhanced lesionsQuantitative susceptibility mappingMR examinationsSclerosis lesionsConventional magnetic resonance imagingMagnetic resonance imagingT2-weighted imagesMS patientsPathophysiologic featuresCerebrospinal fluidOnline supplemental materialWhite matterLesionsQSM imagesResonance imagingPatientsMR imagingThree-dimensional gradient-echo sequenceGradient echo sequenceMonthsBonferroni correctionAge
2011
T1 and proton density at 7 T in patients with multiple sclerosis: an initial study
Bluestein KT, Pitt D, Knopp MV, Schmalbrock P. T1 and proton density at 7 T in patients with multiple sclerosis: an initial study. Magnetic Resonance Imaging 2011, 30: 19-25. PMID: 21937183, PMCID: PMC3375320, DOI: 10.1016/j.mri.2011.07.018.Peer-Reviewed Original ResearchConceptsCortical lesionsMultiple sclerosisWhite matterGray matterHealthy control subjectsWhite matter lesionsNormal-appearing tissueMS patientsMagnetic resonance sequencesMatter lesionsControl subjectsCerebrospinal fluidMS researchLesionsPatientsMR imagingUltrahigh-field MR imagingField MR imagingSclerosisProton densityResonance sequencesTissue responseTurbo fieldMagnetic resonanceInitial study
2004
Glutamate Excitotoxicity in Multiple Sclerosis
Pitt D, Raine C. Glutamate Excitotoxicity in Multiple Sclerosis. 2004, 285-303. DOI: 10.1007/978-1-4419-8959-8_16.Peer-Reviewed Original ResearchGlutamate excitotoxicityMultiple sclerosisWhite matter injuryCentral white matterProminent demyelinationMS pathogenesisOligodendrocyte damageInflammatory demyelinationOligodendrocyte lossExtracellular glutamateGlutamate homeostasisAnimal modelsExcitotoxicityWhite matterCell targetsClearance pathwaysCommon pathwayDisease mechanismsCell culture studiesDemyelinationSclerosisRecent dataOligodendrocytesCulture studiesPathogenesis
2003
Glutamate uptake by oligodendrocytes
Pitt D, Nagelmeier IE, Wilson HC, Raine CS. Glutamate uptake by oligodendrocytes. Neurology 2003, 61: 1113-1120. PMID: 14581674, DOI: 10.1212/01.wnl.0000090564.88719.37.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAstrocytesAutoradiographyBiological TransportCell SurvivalCells, CulturedDose-Response Relationship, DrugExcitatory Amino Acid Transporter 1Excitatory Amino Acid Transporter 2FemaleGene ExpressionGlutamic AcidHumansIn Situ HybridizationMaleMiddle AgedMultiple SclerosisNeurotoxinsOligodendrogliaRNA, MessengerSpinal CordTritiumTumor Necrosis Factor-alphaConceptsMS white matterEAAT-2EAAT-1White matterExtracellular glutamateGlutamate uptakePredominant cellsHuman oligodendrocytesGlutamate removalProinflammatory cytokine tumor necrosisHuman white matterNormal human white matterCommon pathologic eventGlutamate transporter expressionGlutamate receptor expressionCytokine tumor necrosisExcess extracellular glutamateInhibited glutamate uptakeHigh extracellular glutamateSubsequent overstimulationExcitotoxic damageGlutamate excitotoxicityGlutamate clearanceTumor necrosisReceptor expression
2001
Multiple sclerosis: Altered glutamate homeostasis in lesions correlates with oligodendrocyte and axonal damage
Werner P, Pitt D, Raine C. Multiple sclerosis: Altered glutamate homeostasis in lesions correlates with oligodendrocyte and axonal damage. Annals Of Neurology 2001, 50: 169-180. PMID: 11506399, DOI: 10.1002/ana.1077.Peer-Reviewed Original ResearchConceptsMultiple sclerosisAxonal damageWhite matterGlutamate excitotoxicityGlutamate homeostasisMS lesionsGlutaminase expressionMS white matterInflammatory neurologic diseasesActive MS lesionsCNS cell typesOligodendroglial pathologyNoninflammatory conditionsDystrophic axonsNeurologic diseaseGLT-1Low-level expressionAnimal modelsGlutamate transportersHomeostasis contributesLesion correlatesGlutamate transportLesionsOligodendrocytesTherapeutic import
1999
Neuregulin and erbB receptor expression in normal and diseased human white matter
Cannella B, Pitt D, Marchionni M, Raine C. Neuregulin and erbB receptor expression in normal and diseased human white matter. Journal Of Neuroimmunology 1999, 100: 233-242. PMID: 10695733, DOI: 10.1016/s0165-5728(99)00201-5.Peer-Reviewed Original ResearchConceptsGlial growth factor 2Multiple sclerosisErbB receptor expressionWhite matterHuman white matterReceptor expressionCases of MSHuman lymph node tissueAreas of remyelinationLymph node tissueGrowth factor 2Autoimmune demyelinationMicroglial cellsNeurologic diseaseMS lesionsNode tissueMitogenic effectWestern blotWestern blottingOligodendrocytesReceptorsRemyelinationWidespread expressionFactor 2Lymphocytes