0000000000256417

AUTHOR

Stephan Koelsch

showing 2 related works from this author

Oxymetazoline modulates proinflammatory cytokines and the T‐cell stimulatory capacity of dendritic cells

2007

The nasal decongestant oxymetazoline (OMZ) is frequently used in the topical treatment of rhinitis/sinusitis. As proinflammatory cytokines play a critical role in the development and maintenance of local inflammation, the aim of this study was to investigate the influence of OMZ on immune cells in order to diminish the mucosal infiltration of the nose. Peripheral blood mononuclear cells (PBMC) from buffy coats of healthy volunteers were isolated and stimulated in the presence or absence of OMZ. In addition, monocyte-derived dendritic cells (DC) were generated and different concentrations of OMZ were added. DC phenotype and their T-cell stimulatory properties were analysed. The vasoactive su…

oxymetazolinemedicine.medical_treatmentT cellT-LymphocytesInflammationEnzyme-Linked Immunosorbent AssayDermatologyimmunomodulationLymphocyte ActivationBiochemistryProinflammatory cytokinerhinitismedicineHumansAntigen-presenting cellMolecular BiologyCells CulturedDose-Response Relationship Drugbusiness.industryImmunomagnetic SeparationDendritic cellDendritic CellsFlow CytometryNasal decongestantNasal DecongestantsCytokinemedicine.anatomical_structureImmunologyproinflammatory cytokinesLeukocytes MononuclearCytokinesTumor necrosis factor alphaOriginal Articlemedicine.symptombusinessExperimental Dermatology
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Co-activation of naive CD4+ T cells and bone marrow-derived mast cells results in the development of Th2 cells

1995

Activation of naive dense CD4+ T cells by plate-bound anti-CD3 antibodies favors the development of Th1 cells which, upon re-stimulation, produce significant amounts of IFN-gamma but no IL-4. However, co-activation of such naive T cells in the presence of IgE [anti-dinitrophenyl (DNP)]-loaded bone marrow-derived mast cells (BMMC) on plates coated with anti-CD3 antibodies and DNP-BSA led to the development of IL-4-producing Th2 cells. The same result could be observed if irradiated (800 rad) BMMC were applied as co-stimulators. Moreover, BMMC could be replaced by the supernatant of IgE-activated BMMC suggesting that a soluble mediator, presumably IL-4, was responsible for this effect. This a…

CD4-Positive T-LymphocytesMaleCD3 ComplexT cellImmunologyBone Marrow CellsLymphocyte ActivationMiceInterleukin 21Th2 CellsmedicineAnimalsImmunology and AllergyCytotoxic T cellMast CellsIL-2 receptorCells CulturedInterleukin 3Mice Inbred BALB CReceptors IgEChemistryIonomycinDegranulationGeneral MedicineMolecular biologyInterleukin 33medicine.anatomical_structureImmunologyInterleukin 12CytokinesFemaleInterleukin-4International Immunology
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