Staphylococcal exotoxins stimulate nitric oxide-dependent murine macrophage tumoricidal activity
نویسندگان
چکیده
منابع مشابه
Pneumococci stimulate the production of the inducible nitric oxide synthase and nitric oxide by murine macrophages.
The role of nitric oxide (NO) in the pathophysiology of gram-positive sepsis is uncertain. In inflammatory conditions, high-output NO production is catalyzed by the enzyme inducible nitric oxide synthase (iNOS). The ability of 2 strains of pneumococci, pneumococcal cell wall preparations, and purified pneumococcal capsule (Pnu-Imune 23) to trigger the production of iNOS protein and NO in RAW 26...
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Since certain functions mediated by nitric oxide (NO) decline with age, the age dependence of NO production by macrophages from BALB/c mice was investigated. Lipopolysaccharide-, peptidoglycan-polysaccharide-, or interferon-gamma-stimulated splenic and peritoneal macrophages from young (1 month old), middle-aged (4-5 months old), and old (6-20 months old) BALB/c mice showed a progressive and ma...
متن کاملEffect of recombinant human tumor necrosis factor on the induction of murine macrophage tumoricidal activity.
The ability of recombinant human tumor necrosis factor (rH-TNF) alone or in combination with lymphokines (LK) to induce the in vitro activation of murine macrophages was evaluated. The treatment of C57BL/6 mouse resident peritoneal exudate cells (PEC) with rH-TNF and LK was found to induce the activation of macrophages to a tumoricidal state against P815 mastocytoma cells. Neither rH-TNF nor LK...
متن کاملStaphylococcal scarlet fever: role of pyrogenic exotoxins.
Staphylococcal pyrogenic exotoxin (PE) types A and B were tested for their role in production of a scarlatiniform rash. The PEs elicited minimal skin reactions after intracutaneous injection into animals not presensitized to the toxins. In contrast, erythematous injection into animals not presensitized to the toxins. In contrast, erythematous and edematous rashes were produced after administrat...
متن کاملthe effect of artemisia fragrans willd: essential oil on inducible nitric oxide synthase gene expression and nitric oxide production in lipopolysaccharide-stimulated murine macrophage cell line
the genus artemisia is estimated to comprise over 800 species with anti-cancer, anti-fungal, anti-oxidant and anti-inflammatory properties. artemisia fragrans ( a. fragrans ), a species that belongs to genus artemisia , is rich in monoterpenes and sesquiterpenes derivatives. due to anti-inflammatory properties of monoterpenes and sesquiterpenes, we aimed to investigate the effect of a. fragrans...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1991
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.59.9.2987-2993.1991