title: Production of tumor necrosis factor alpha by resident and activated murine macrophages.
abstract: Alveolar macrophages (Am phi s), resident peritoneal macrophages (RPm phi s), and thioglycolate-elicited peritoneal macrophages (TGPm phi s) were isolated from C57BL/6 mice and incubated with lipopolysaccharide (LPS), stimulated cell supernatant, or recombinant interferon gamma (IFN-gamma) for 24 h. Tumor necrosis factor (TNF) in cell-free supernatants was measured by enzyme-linked immunosorbent assay. Amo phi s incubated with 10(3) ng/ml LPS produced 50 times more TNF than RPm phi s and 5 times more than TGPm phi s, and LPS alone induced maximum TNF production by Am phi s. Stimulated cell supernatant or recombinant IFN-gamma alone did not induce TNF production. A combination of LPS with stimulated cell supernatant or IFN-gamma had only a limited synergistic effect on TNF production by Am phi s. However, both LPS and stimulated cell supernatant or recombinant IFN-gamma induced maximum TNF production by RPm phi s and TGPm phi s. TGPm phi s showed greater sensitivity to LPS and stimulated cell supernatant or IFN-gamma with regard to TNF production than the other macrophage populations investigated.
authors.affiliation: Department of Fishery Food Sciences, Faculty of Fisheries, Nagasaki University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Tachibana
authors.forename: G J
authors.initials: GJ
authors.lastname: Chen
authors.forename: D S
authors.initials: DS
authors.lastname: Huang
authors.forename: P
authors.initials: P
authors.lastname: Scuderi
authors.forename: R R
authors.initials: RR
authors.lastname: Watson
mesh_terms: D000818:Animals; D005260:Female; D008070:Lipopolysaccharides / Q000502:physiology; D008222:Lymphokines / Q000494:pharmacology; D008262:Macrophage Activation / Q000502:physiology*; D008264:Macrophages / Q000378:metabolism*; D016676:Macrophages, Alveolar / Q000378:metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D010529:Peritoneal Cavity / Q000166:cytology; D011994:Recombinant Proteins / Q000096:biosynthesis; D013864:Thioglycolates / Q000494:pharmacology; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis*
chemical_list: D008070:Lipopolysaccharides; D008222:Lymphokines; D011994:Recombinant Proteins; D013864:Thioglycolates; D014409:Tumor Necrosis Factor-alpha