title: Bradykinin B1 and B2 receptor agonists synergistically potentiate interleukin-1-induced prostaglandin biosynthesis in human gingival fibroblasts.
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.
authors.affiliation: Department of Oral Cell Biology, University of Umeå, Sweden.
authors.forename: U H
authors.initials: UH
authors.lastname: Lerner
authors.forename: T
authors.initials: T
authors.lastname: Modéer
mesh_terms: D016718:Arachidonic Acid / Q000378:metabolism; D001920:Bradykinin / Q000502:physiology*; D002648:Child; D015232:Dinoprostone / Q000096:biosynthesis*; D005347:Fibroblasts / Q000378:metabolism; D005881:Gingiva / Q000166:cytology / Q000378:metabolism*; D006801:Humans; D007375:Interleukin-1 / Q000502:physiology*; D018002:Receptors, Bradykinin; D017981:Receptors, Neurotransmitter / Q000378:metabolism*
chemical_list: D007375:Interleukin-1; D018002:Receptors, Bradykinin; D017981:Receptors, Neurotransmitter; D016718:Arachidonic Acid; D015232:Dinoprostone; D001920:Bradykinin