2024
CNS cell-derived exosome signatures as blood-based biomarkers of neurodegenerative diseases
Park C, Weerakkody J, Schneider R, Miao S, Pitt D. CNS cell-derived exosome signatures as blood-based biomarkers of neurodegenerative diseases. Frontiers In Neuroscience 2024, 18: 1426700. PMID: 38966760, PMCID: PMC11222337, DOI: 10.3389/fnins.2024.1426700.Peer-Reviewed Original ResearchNeurodegenerative diseasesSubtype of extracellular vesiclesDisease-related processesDisease-associated changesCentral nervous systemBlood-based proteinsBiomarkers of neurodegenerative diseasesBlood-brain barrierCell typesExosome populationMolecular cargoExtracellular vesiclesCell of originRNA biomarkersExosome isolationTranslation to clinical useCell-derived exosomesLack of standardized methodologyMolecular contentExosomesBlood-based biomarkersPeripheral bloodCellsExosome signatureMolecular biomarkersSiponimod Attenuates Neuronal Cell Death Triggered by Neuroinflammation via NFκB and Mitochondrial Pathways
Gurrea-Rubio M, Wang Q, Mills E, Wu Q, Pitt D, Tsou P, Fox D, Mao-Draayer Y. Siponimod Attenuates Neuronal Cell Death Triggered by Neuroinflammation via NFκB and Mitochondrial Pathways. International Journal Of Molecular Sciences 2024, 25: 2454. PMID: 38473703, PMCID: PMC10931690, DOI: 10.3390/ijms25052454.Peer-Reviewed Original ResearchConceptsSecondary progressive MSRelapsing-remitting MSCentral nervous systemMultiple sclerosisProgressive MSModulator of sphingosine-1-phosphateCytokine tumor necrosis factor-alphaEffects of siponimodTumor necrosis factor-alphaHeterogeneous clinical courseBouts of inflammationNeuroprotective effectsPreclinical animal modelsAutoimmune demyelinating diseaseNecrosis factor-alphaMitochondrial oxidative phosphorylationHuman induced pluripotent stem cell (iPSC)-derived neuronsSphingosine-1-phosphateCytokine signaling pathwaysClinical courseLive cell analysisProgressive diseaseOral treatmentMitochondrial pathwayFactor-alpha
2018
The Role of Astrocytes in Multiple Sclerosis
Ponath G, Park C, Pitt D. The Role of Astrocytes in Multiple Sclerosis. Frontiers In Immunology 2018, 9: 217. PMID: 29515568, PMCID: PMC5826071, DOI: 10.3389/fimmu.2018.00217.Peer-Reviewed Original ResearchConceptsRole of astrocytesImmune cell accessCentral nervous systemMultiple sclerosis lesionsAstrocyte activationMultiple sclerosisGlial scarAstrocyte functionMS treatmentMS lesionsNervous systemAstrocytesSclerosis lesionsLesion formationFunctional polarizationLesionsCell accessSclerosisInflammationPathogenesisSignificance 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 diseasesMyeloid cell plasticity in the evolution of central nervous system autoimmunity
Giles DA, Washnock‐Schmid J, Duncker PC, Dahlawi S, Ponath G, Pitt D, Segal BM. Myeloid cell plasticity in the evolution of central nervous system autoimmunity. Annals Of Neurology 2018, 83: 131-141. PMID: 29283442, PMCID: PMC5876132, DOI: 10.1002/ana.25128.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsArginaseAutoimmune Diseases of the Nervous SystemBone Marrow CellsCell PlasticityChimeraDisease ProgressionEncephalomyelitis, Autoimmune, ExperimentalHumansImmunohistochemistryLectins, C-TypeMannose ReceptorMannose-Binding LectinsMiceMice, Inbred C57BLMultiple SclerosisMyeloid CellsNitric Oxide Synthase Type IIPhenotypeReceptors, Cell SurfaceConceptsInducible nitric oxide synthaseExperimental autoimmune encephalomyelitisCNS myeloid cellsCentral nervous systemCentral nervous system autoimmunityChronic active MS lesionsActive MS lesionsMultiple sclerosisMyeloid cellsMS lesionsAnimal model experimental autoimmune encephalomyelitisRemission of EAEModel experimental autoimmune encephalomyelitisMyeloid cell plasticityEncephalitogenic T cellsNitric oxide synthaseMyeloid cell phenotypeFuture therapeutic strategiesHuman myeloid cellsAnn NeurolNoninflammatory phenotypePolarized subsetsClinical remissionAutoimmune encephalomyelitisProinflammatory markers
2014
B cells populating the multiple sclerosis brain mature in the draining cervical lymph nodes
Stern JN, Yaari G, Vander Heiden JA, Church G, Donahue WF, Hintzen RQ, Huttner AJ, Laman JD, Nagra RM, Nylander A, Pitt D, Ramanan S, Siddiqui BA, Vigneault F, Kleinstein SH, Hafler DA, O'Connor KC. B cells populating the multiple sclerosis brain mature in the draining cervical lymph nodes. Science Translational Medicine 2014, 6: 248ra107. PMID: 25100741, PMCID: PMC4388137, DOI: 10.1126/scitranslmed.3008879.Peer-Reviewed Original ResearchConceptsCervical lymph nodesCentral nervous systemB cellsCerebrospinal fluidLymph nodesMultiple sclerosisLymphoid tissueCNS of patientsCNS B cellsAntigen-experienced B cellsMultiple sclerosis brainSecondary lymphoid tissuesB cell compartmentB cell trafficB cell maturationImmunomodulatory therapyImmune infiltratesPeripheral bloodInflammatory diseasesLymphocyte transmigrationPeripheral tissuesNervous systemMembers of clonesCell maturationCell traffic
2003
Experimental Autoimmune Encephalomyelitis (EAE) in CCR2−/− Mice Susceptibility in Multiple Strains
Gaupp S, Pitt D, Kuziel WA, Cannella B, Raine CS. Experimental Autoimmune Encephalomyelitis (EAE) in CCR2−/− Mice Susceptibility in Multiple Strains. American Journal Of Pathology 2003, 162: 139-150. PMID: 12507897, PMCID: PMC1851120, DOI: 10.1016/s0002-9440(10)63805-9.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell DivisionCrosses, GeneticDisease Models, AnimalEncephalomyelitis, Autoimmune, ExperimentalGenetic Predisposition to DiseaseGlycoproteinsImmunity, InnateImmunohistochemistryIn Situ HybridizationLymphocytesMiceMice, Inbred BALB CMice, Inbred C57BLMice, Inbred StrainsMice, KnockoutMyelin SheathMyelin-Oligodendrocyte GlycoproteinNuclease Protection AssaysPeptide FragmentsReceptors, CCR2Receptors, ChemokineRNA, MessengerSpecies SpecificityConceptsExperimental autoimmune encephalomyelitisCentral nervous systemAutoimmune encephalomyelitisLow molecular weight cytokinesLack of CCR2Deletion of CCR2Sites of inflammationWild-type animalsDifferent mouse strainsCCR2 deletionCNS lesionsMultiple sclerosisWeight cytokinesAutoimmune diseasesMouse susceptibilityNervous systemImmune systemCompensatory mechanismsBalb CCCR2Mouse strainsChemokinesMonocytesEncephalomyelitisAppropriate receptors
2000
Glutamate excitotoxicity in a model of multiple sclerosis
Pitt D, Werner P, Raine C. Glutamate excitotoxicity in a model of multiple sclerosis. Nature Medicine 2000, 6: 67-70. PMID: 10613826, DOI: 10.1038/71555.Peer-Reviewed Original ResearchConceptsGlutamate excitotoxicityMultiple sclerosisAMPA/kainate antagonist NBQXAMPA/kainate typeCentral nervous system inflammationAMPA/kainate antagonistAntigen-primed T cellsCentral nervous system2Nervous system inflammationExperimental autoimmune encephalomyelitisCentral nervous systemMyelin-producing cellsLack of effectDemyelinating modelKainate typeSystem inflammationAutoimmune encephalomyelitisInflammatory attacksKainate antagonistAntagonist NBQXAutoimmune demyelinationPathologic featuresClinical differencesReceptor damageOligodendrocyte survivalGlutamate excitotoxicity — a mechanism for axonal damage and oligodendrocyte death in Multiple Sclerosis?
Werner P, Pitt D, Raine CS. Glutamate excitotoxicity — a mechanism for axonal damage and oligodendrocyte death in Multiple Sclerosis? Journal Of Neural Transmission. Supplementa 2000, 375-385. PMID: 11205156, DOI: 10.1007/978-3-7091-6301-6_27.Peer-Reviewed Original ResearchConceptsCentral nervous systemAMPA/kainate antagonistMultiple sclerosisGlutamate excitotoxicityImmune cellsKainate antagonistAxonal damageAntigen-primed T cellsMyelin-producing cellsLack of effectSite of entryCNS inflammationInflammatory attacksExperimental autoimmunePerivascular cuffsAutoimmune demyelinationInflammatory lesionsClinical differencesOligodendrocyte survivalEffective therapyGlutamate receptorsOligodendrocyte deathT cellsExcitotoxicityLesion size