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  • Title: Immunohistochemical localization of an inducible form of nitric oxide synthase in various organs of rats treated with Propionibacterium acnes and lipopolysaccharide.
    Author: Bandaletova T, Brouet I, Bartsch H, Sugimura T, Esumi H, Ohshima H.
    Journal: APMIS; 1993 Apr; 101(4):330-6. PubMed ID: 7686760.
    Abstract:
    Immunohistochemical localization of an endotoxin-inducible form of nitric oxide synthase was examined using rabbit polyclonal antibody against the enzyme purified from rat liver. In rats treated with Propionibacterium acnes and lipopolysaccharide, immunostaining was observed in macrophages, occasional lymphocytes, neutrophils and eosinophils in red pulp of spleen, Kupffer cells, endothelial cells and hepatocytes in liver, alveolar macrophages in lung, macrophages and endothelial cells in adrenal glands, and histiocytes, eosinophils, mast cells and endothelial cells in colon. Immunoreactivity was also evident in the following tissues: histiocytes and endothelial cells in kidney; histiocytes and neutrophils in esophagus; macrophages and eosinophils in duodenum; macrophages, some lymphocytes and mast cells in ileum; histiocytes in thymus; and endothelial cells in heart and aorta. Immunoreactivity was not detected in these organs from untreated rats. Positively staining cells in these rat organs appeared within 2.5 h after lipopolysaccharide administration; their number dramatically increased within the next 2.5 h, remained at high levels for a further 19 h, and then decreased over the following 24 h. The number of positive cells appearing correlated well with the nitric oxide synthase activity biochemically determined in the same organs.
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