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  • Title: Bradykinin B1 and B2 receptor agonists synergistically potentiate interleukin-1-induced prostaglandin biosynthesis in human gingival fibroblasts.
    Author: Lerner UH, Modéer T.
    Journal: Inflammation; 1991 Dec; 15(6):427-36. PubMed ID: 1661707.
    Abstract:
    The interactions between bradykinin (BK) and interleukin-1 (IL-1) on prostaglandin formation in human gingival fibroblasts have been studied. IL-1 alpha and IL-1 beta stimulated prostaglandin E2 (PGE2) formation in the gingival fibroblasts with IL-1 beta being the most potent agonist. The effects of both IL-1 alpha and IL-1 beta on PGE2 biosynthesis was synergistically potentiated by BK, in a dose-related manner. The synergistic interaction between IL-1 beta and BK on PGE2 production was seen both with B1 (des-Arg9-BK) and B2 (BK, Lys-BK) BK receptor agonists. No synergistic interaction between BK and IL-1 beta was seen on arachidonic acid release. These data suggest that BK and IL-1 act in concert to enhance prostanoid formation in inflammatory lesions and that the level of interaction is distal to phospholipase activity.
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