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  • Title: Effect of Y-27632 on release of cytokines from peripheral T cells in asthmatic patients and normal subjects.
    Author: Aihara M, Dobashi K, Iizuka K, Nakazawa T, Mori M.
    Journal: Int Immunopharmacol; 2004 Apr; 4(4):557-61. PubMed ID: 15099533.
    Abstract:
    Previously we have reported that Y-27632, a selective inhibitor of Rho-associated protein kinases (ROCKs) for RhoA, suppressed concanavalin A (Con A)-induced secretion of cytokines from peripheral T cells of normal persons. Recent studies suggested its usefulness for clinical management of bronchial asthma. We examined effect of Y-27632 on release of cytokines from T cells of asthmatic patients. Peripheral T cells of six asthmatic subjects and six normal persons were stimulated with Con A for 24 h in the presence of Y-27632. The concentrations of IL-2, interferon (IFN)-gamma, IL-4, and IL-5 in supernatant were measured. Y-27632 down-regulated secretion of IL-2 and IFN-gamma and weakly decreased secretion of IL-4 and IL-5 from Con A-activated T cells in the asthmatics. The reduced secretion of IFN-gamma and IL-4 in the asthmatics was inferior to that in the normal subjects. Our data suggested that the involvement of RhoA/ROCK pathway in TCR-mediated secretion of IFN-gamma and IL-4 in patients with bronchial asthma differed from that in healthy persons.
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