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Inhalation of tumour necrosis factor-α (TNF-α) induced a bronchial hyperreactivity to contractile agonists. However, the mechanisms of TNF-α involved in the pathogenesis of bronchial hyperreactivity were not completely understood. Therefore, we investigated the effect of TNF-α on bradykinin (BK)-induced inositol phosphate (IP) accumulation and Ca 2+ mobilization, and up-regulation of...