| Literature DB >> 2409774 |
R Fantozzi, S Brunelleschi, L Giuliattini, P Blandina, E Masini, G Cavallo, P F Mannaioni.
Abstract
Histamine inhibits superoxide anion (O-2) production from human neutrophils stimulated by N-formylmethionyl-leucyl-phenylalanine (FMLP). The effects of histamine are dose-dependent and competitively antagonized by cimetidine. When passively sensitized rat serosal mast cells and human neutrophils are mixed together, O-2 production from FMLP-activated granulocytes is significantly reduced, following mast cell degranulation by acetylcholine. These inhibitory effects can be counteracted by cimetidine. Exposure of non-sensitized rat mast cells to FMLP-stimulated human neutrophils causes histamine release. These results suggest bidirectional control mechanisms between mast cells and neutrophils, that further stress the role of histamine in regulating inflammatory processes.Entities:
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Year: 1985 PMID: 2409774 DOI: 10.1007/bf01983155
Source DB: PubMed Journal: Agents Actions ISSN: 0065-4299