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  • 1
    ISSN: 1420-908X
    Schlagwort(e): Key words: Th2 — Airway inflammation — Antigen — T cell — Cytokines
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. Objective and Design: We investigated whether airway inflammation in a mouse model of allergic asthma is related to antigen-specific T cell responses in the effector organ, the lung, and in the lung draining lymph nodes (LN). ¶Materials and Subjects: In BALB/c mice pathophysiological parameters were measured in vivo, and lung draining LN and lung cells were restimulated in vitro. ¶Treatment: Mice were sensitized with ovalbumin and repeatedly challenged with ovalbumin or saline inhalation. ¶Methods: Airway reactivity, inflammation in the airways, serum levels of IgE were measured, and cytokine levels and proliferative responses were determined in antigen-stimulated lymphocyte cultures. ¶Results and Conclusions: Sensitization results in antigen-specific Th0-like LN cells, despite the presence of antigen-specific IgE. Repeated antigen inhalation induced airway hyperresponsiveness and eosinophil infiltration concomitant with a shift towards Th2 cytokine production exclusively by lung draining LN T cells. Furthermore, these airway symptoms are associated with antigen-specific CD4+ effector T cells in the airway tissue producing only IL-5, but not IL-4, which are unable to proliferate.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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