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The effect of nitric oxide on the lipopolysaccharide (LPS)-induced cytokine production by alveolar macrophages was studied. When alveolar macrophages were cultured, substantial amounts of interleukin-1(IL-1), interleukin-6 (IL-6), tumor necrosis factor alpha(TNF-alpha), and nitric oxide are produced upon stimulation with LPS. Inhibition of the nitric oxide production by the L-arginine analogue N(G)-monomethyl-L-arginine (NMMA), resulted in an increase of IL-1(beta) and IL-6, whereas the TNF-alpha concentrations remained unchanged, suggesting specific inhibitory effects of nitric oxide on the LPS-stimulated cytokine production by alveolar macrophages. The observed cytokine-modulation properties of nitric oxide did not result from cytotoxic actions of the oxidation of L-arginine on macrophages, since nitric oxide synthesis did not affect the viability of the alveolar macrophages. Conversely the nitric oxide donor S-nitroso-N-acetyl-D, L-penicillamine (SNAP) induced dose-dependent inhibition of IL-1 production in LPS-stimulated alveolar macrophages in which endogenous nitric oxide production was blocked. The results indicate that nitric oxide can affect the LPS-induced IL-1beta and IL-6 secretion by alveolar macrophages in an autoregulatory way and are discussed in view of the important physiologic consequences this autoregulation by nitric acid oxide may have.
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
March 1998,
The American journal of physiology,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
September 1996,
Veterinary immunology and immunopathology,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
December 1995,
Transplantation proceedings,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
April 2011,
American journal of respiratory cell and molecular biology,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
October 1996,
Annals of the New York Academy of Sciences,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
September 1997,
American journal of respiratory cell and molecular biology,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
May 1988,
Journal of immunology (Baltimore, Md. : 1950),
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
January 2000,
Advances in experimental medicine and biology,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
November 1999,
Experimental gerontology,
J H Persoons, and
K Schornagel, and
F F Tilders, and
J De Vente, and
F Berkenbosch, and
G Kraal
January 1999,
The American journal of physiology,
