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  • Title: Distribution and localization of endotoxin in the reticulo-endothelial system (RES) and in the main vessels of the rat during shock.
    Author: Freudenberg N, Freudenberg MA, Bandara K, Galanos C.
    Journal: Pathol Res Pract; 1985 Mar; 179(4-5):517-27. PubMed ID: 4001029.
    Abstract:
    The fate of endotoxin was followed with immunohistochemistry and radio-labelled lipopolysaccharide (LPS) in organs of the reticulo-endothelial system (RES), in the great vessels and the thoracic duct of rats during a 14 day period after the injection of a shock-inducing amount of endotoxin. The immunohistochemical detectability of LPS in most tissues increased continuously during the first 48 hours, showing the strongest LPS staining in the liver and adrenal gland. Macrophages were found to be the most important cells of primary LPS uptake in all organs except the adrenal glands, where endotoxin was mainly present in phagocytic vacuoles of the cortical epithelium. The comparison of results obtained with the immunoperoxidase method and radioactivity measurements revealed that at a later stage of the experiment the persisting LPS in liver and spleen looses its antigenic activity. The correlation between the appearance of LPS positive macrophages and histological signs of tissue injury during endotoxin shock is striking.
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