INVOLVEMENT OF p38 AND JNK mapks PATHWAYS IN SUBSTANCE P-INDUCED PRODUCTION OF TNF - BY PERITONEAL MAST CELLS (Articolo in rivista)

Type
Label
  • INVOLVEMENT OF p38 AND JNK mapks PATHWAYS IN SUBSTANCE P-INDUCED PRODUCTION OF TNF - BY PERITONEAL MAST CELLS (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Azzolina A, Guarneri P, Lampiasi N. (2002)
    INVOLVEMENT OF p38 AND JNK mapks PATHWAYS IN SUBSTANCE P-INDUCED PRODUCTION OF TNF - BY PERITONEAL MAST CELLS
    in Cytokine (Phila. Pa., Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Azzolina A, Guarneri P, Lampiasi N. (literal)
Pagina inizio
  • 72 (literal)
Pagina fine
  • 80 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 18 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • IBIM CNR (literal)
Titolo
  • INVOLVEMENT OF p38 AND JNK mapks PATHWAYS IN SUBSTANCE P-INDUCED PRODUCTION OF TNF - BY PERITONEAL MAST CELLS (literal)
Abstract
  • Mast cells play a central role in both inflammation and immediate allergic reactions. We have previously shown that Substance P (SP) stimulates TNF-_ mRNA and protein expression in rat peritoneal mast cells (PMC). In the present paper, we investigated whether the induction of TNF-_ production by the mast cells agonist involves MAPKs signalling pathways. We found that as early as 5 min after PMC exposure to SP, phosphorylation of p38 MAPK and JNK was induced. On the contrary, phosphorylation of p42/44 MAPK occurred only after a 30 min exposure to SP and did not correlate with SP- induced TNF-_ production. The highly specific p38 MAPK inhibitor SB203580 and the blocker of PI-3K wortmannin, abolished SP-induced increase in TNF- _ mRNA and protein levels and showed to reduce the SP-mediated histamine secretion. In addition, wortmannin reduced SP-mediated JNK hosphorylation. The results reveal that the induction of TNF-_ expression and histamine exocytosis by exposure of rat PMC to substance P requires the activation of p38 and JNK MAPKs pathways.Moreover, they suggest PI-3K as a possible upstream component of JNK pathway in SP-induced inflammatory reactions. (literal)
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