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Muramyldipeptide and granulocyte-macrophage colony-stimulating factor enhance interferon-gamma-induced nitric oxide production by rat alveolar macrophages.

Authors
  • Jorens, P G
  • van Overveld, F J
  • Bult, H
  • Vermeire, P A
  • Herman, A G
Type
Published Article
Journal
Agents and Actions
Publisher
Springer-Verlag
Publication Date
Jan 01, 1993
Volume
38
Issue
1-2
Pages
100–105
Identifiers
PMID: 8480530
Source
Medline
License
Unknown

Abstract

Rat alveolar macrophages incubated with recombinant rat interferon-gamma produce L-arginine-dependent nitric oxide, which is rapidly decomposed into nitrite: this production by interferon-gamma was markedly enhanced by granulocyte-macrophage colony-stimulating factor and muramyldipeptide, but not by other cytokines. The enhancement was dependent on the presence of L-arginine in the incubation medium. It was based on a simple synergism between interferon-gamma and muramyldipeptide and a priming effect of granulocyte-macrophage colony-stimulating factor for interferon-gamma-induced nitrite production. These data suggest that cytokine networks are important in the induction of nitric oxide in rat alveolar macrophages.

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