2021
Small extracellular vesicles released by infused mesenchymal stromal cells target M2 macrophages and promote TGF‐β upregulation, microvascular stabilization and functional recovery in a rodent model of severe spinal cord injury
Nakazaki M, Morita T, Lankford KL, Askenase PW, Kocsis JD. Small extracellular vesicles released by infused mesenchymal stromal cells target M2 macrophages and promote TGF‐β upregulation, microvascular stabilization and functional recovery in a rodent model of severe spinal cord injury. Journal Of Extracellular Vesicles 2021, 10: e12137. PMID: 34478241, PMCID: PMC8408371, DOI: 10.1002/jev2.12137.Peer-Reviewed Original ResearchConceptsMarrow-derived mesenchymal stem/stromal cellsSpinal cord injuryBlood-spinal cord barrierSmall extracellular vesiclesFunctional recoveryM2 macrophagesCord injuryInjury siteTherapeutic effectStromal cellsSevere spinal cord injurySingle MSC injectionImproved functional recoveryBone marrow-derived mesenchymal stem/stromal cellsM2 macrophage markersSimilar therapeutic effectsRelease of sEVsMesenchymal stem/stromal cellsExtracellular vesiclesTight junction proteinsStem/stromal cellsMesenchymal stromal cellsTGF-β receptorMSC infusionSCI rats
2009
Epicutaneous Immunization with Protein Antigen in the Presence of TLR4 Ligand Induces TCRαβ+CD4+ T Contrasuppressor Cells That Reverse Skin-Induced Suppression of Th1-Mediated Contact Sensitivity
Ptak W, Majewska M, Bryniarski K, Ptak M, Lobo FM, Zając K, Askenase PW, Szczepanik M. Epicutaneous Immunization with Protein Antigen in the Presence of TLR4 Ligand Induces TCRαβ+CD4+ T Contrasuppressor Cells That Reverse Skin-Induced Suppression of Th1-Mediated Contact Sensitivity. The Journal Of Immunology 2009, 182: 837-850. PMID: 19124727, DOI: 10.4049/jimmunol.182.2.837.Peer-Reviewed Original ResearchMeSH KeywordsAdministration, CutaneousAnimalsCD4-Positive T-LymphocytesCells, CulturedContraindicationsDermatitis, ContactImmune ToleranceImmunizationLigandsLipopolysaccharidesMaleMiceMice, Inbred BALB CMice, Inbred CBAMice, KnockoutMice, TransgenicPatch TestsReceptors, Antigen, T-Cell, alpha-betaSkinTh1 CellsToll-Like Receptor 4TrinitrobenzenesConceptsEpicutaneous immunizationEffector cellsIL-12Effector phaseT cellsIFN-gammaTC cellsContrasuppressor T cellsCS effector cellsIL-12 neutralizationSkin-induced suppressionContact sensitivity reactionTh1 effector cellsTLR4 ligand LPSMechanism of actionEC immunizationSuppressor CD4Th1 CD4Regulatory cellsRIL-12TLR4 ligandIL-6Contact sensitivityLigand LPSINF-gamma
2006
Interleukin 5 Plays an Essential Role in Elicitation of Contact Sensitivity through Dual Effects on Eosinophils and B-1 Cells
Itakura A, Kikuchi Y, Kouro T, Ikutani M, Takaki S, Askenase PW, Takatsu K. Interleukin 5 Plays an Essential Role in Elicitation of Contact Sensitivity through Dual Effects on Eosinophils and B-1 Cells. International Archives Of Allergy And Immunology 2006, 140: 8-16. PMID: 16772721, DOI: 10.1159/000092705.Peer-Reviewed Original ResearchConceptsElicitation of CSIgM-producing cellsContact sensitivityEosinophil peroxidase activityEosinophil infiltrationIL-5Antigen-specific immunoglobulin M antibodyCS-effector T cellsEnzyme-linked immunospot assayLocal tissueEffector T cellsRole of interleukinImmunoglobulin M antibodiesIL-5 receptorImmunized ILImmunospot assayContact sensitizationM antibodiesMononuclear cellsDeficient micePolymorphonuclear cellsT cellsImmune responseCell activationInterleukin-5
1996
Delayed-type hypersensitivity in mast cell-deficient mice: dependence on platelets for expression of contact sensitivity.
Geba GP, Ptak W, Anderson GM, Paliwal V, Ratzlaff RE, Levin J, Askenase PW. Delayed-type hypersensitivity in mast cell-deficient mice: dependence on platelets for expression of contact sensitivity. The Journal Of Immunology 1996, 157: 557-65. PMID: 8752902, DOI: 10.4049/jimmunol.157.2.557.Peer-Reviewed Original ResearchConceptsMast cell-deficient miceCell-deficient miceDelayed-type hypersensitivityContact sensitivityPlatelet depletionMast cellsCS responsesT cell-mediated immune responsesMast cell-deficient strainsDelayed-type hypersensitivity responseT cell-mediated responsesCell-mediated immune responsesTissue levelsCutaneous sensitivity responsesVasoactive amine serotoninCell-mediated responsesLocal mast cellsMast cell numbersNormal mast cell numbersHypersensitivity responseCutaneous responseImmunologic evidenceBeige miceImmune responseAmine serotonin
1976
Antibody-mediated basophil accumulations in cutaneous hypersensitivity reactions of guinea pigs.
Askenase P, Haynes J, Hayden B. Antibody-mediated basophil accumulations in cutaneous hypersensitivity reactions of guinea pigs. The Journal Of Immunology 1976, 117: 216-24. PMID: 932424, DOI: 10.4049/jimmunol.117.1.216.Peer-Reviewed Original ResearchConceptsCutaneous basophil hypersensitivityCutaneous hypersensitivity reactionsGuinea pigsDelayed hypersensitivityBasophil accumulationProduction of B lymphocytesCutaneous basophil hypersensitivity reactionT lymphocytesKeyhole limpet hemocyanin (KLHB lymphocytesIntradermal injectionDonors 1 weekHypersensitive responseHypersensitivity reactionsPigsSerum antibodiesAntibody production of B lymphocytesHypersensitivityBasophil reactionsImmune serumAntibody productionSerum