Nitric oxide production by murine spleen cells stimulated with Porphyromonas gingivalis-derived lipopolysaccharide.
Asian Pac J Allergy Immunol
;
2000 Dec; 18(4): 209-14
Article
in English
| IMSEAR
| ID: sea-36581
ABSTRACT
The aim of the present study was to determine whether Porphyromonas gingivalis-lipopolysaccharide (Pg-LPS) may stimulate nitric oxide (NO) production by murine spleen cells. Spleen cells derived from Balb/c mice were cultured in the presence of Pg-LPS or LPS from Salmonella Typhosa. The cell were also cultured in the presence of Pg-LPS with or without L-arginine, L-arginine plus NG-monomethyl-L-arginine (NMMA), or IFN-gamma. Furthermore, the plastic non-adherent spleen cells were stimulated with Pg-LPS and L-arginine. The results showed that Pg-LPS failed to stimulate splenic NO production by themselves. Exogenous L-arginine or IFN-gamma up-regulated the NO production of Pg-LPS-stimulated spleen cells, but the stimulatory effects of L-arginine were completely blocked by NMMA. It was also demonstrated that in the presence of Pg-LPS and L-arginine, splenic macrophages were the cellular source of NO. These results suggest, therefore, that P. gingivalis-LPS may induce murine splenic macrophages to produce NO in a L-arginine and an IFN-gamma-dependent mechanism.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Arginine
/
Salmonella typhi
/
Spleen
/
Female
/
Cells, Cultured
/
Lipopolysaccharides
/
Interferon-gamma
/
Porphyromonas gingivalis
/
Omega-N-Methylarginine
/
Enzyme Inhibitors
Language:
English
Journal:
Asian Pac J Allergy Immunol
Year:
2000
Type:
Article
Similar
MEDLINE
...
LILACS
LIS