• Radiation research · Dec 1999

    The reticuloendothelial system and macrophage-monocyte system in thorotrast patients.

    • H Abe, T Kawahara, K Gondou, S Sakisaka, and M Sata.
    • Department of Internal Medicine, Fukuoka Prefectural Asakura Hospital, Raiharu 422, Amagi 838-0069, Japan.
    • Radiat. Res. 1999 Dec 1;152(6 Suppl):S115-7.

    AbstractTo evaluate the function of the reticuloendothelial system and macrophage-monocyte system, blood samples from Thorotrast patients and age-matched healthy controls were used to determine the titer of plasma antibodies to lipid A and the numbers of several lymphocyte subclasses in peripheral blood and for an autoradiographic study of peripheral blood monocytes. The titer of plasma IgM class antibodies to lipid A was significantly elevated in the Thorotrast patients. Counts of CD 11-positive lymphocytes and CD 57-positive lymphocytes, which correspond to monocytes and natural killer cells, respectively, were significantly increased in the Thorotrast patients. Autoradiography showed that alpha-particle tracks were emitted from the monocytes isolated from the peripheral blood of Thorotrast patients. Thus the depressed function of the reticuloendothelial system resulted in the activation of the macrophage-monocyte system in the Thorotrast patients.

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