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  • Title: Decreased interleukin 1 activity in culture supernatant of lipopolysaccharide stimulated monocytes from patients with liver cirrhosis and hepatocellular carcinoma.
    Author: Yokota M, Sakamoto S, Koga S, Ibayashi H.
    Journal: Clin Exp Immunol; 1987 Feb; 67(2):335-42. PubMed ID: 3038436.
    Abstract:
    Immunoregulatory function of peripheral blood monocytes was studied in patients with hepatocellular carcinoma (HCC) and liver cirrhosis (LC), by assaying interleukin 1 (IL-1) and prostaglandin E2 (PGE2) in the culture supernatant of lipopolysaccharide-stimulated monocytes. IL-1 activity of the monocyte culture supernatant without indomethacin was decreased in patients with HCC and LC, compared with that of controls. The activity was lower in patients with HCC than that in those with LC. The PGE2 content of the culture supernatant of monocytes from patients with LC and HCC was increased, compared to normal controls. To avoid the effect of PGE2 on the IL-1 assay, we cultured the monocytes with addition of indomethacin and assayed IL-1 activity in the culture supernatant. As a result, monocyte IL-1 production was increased in patients with HCC and LC, compared with normal controls. The decrease in IL-1 activity of the supernatant without indomethacin of patients with LC and HCC was considered to be due to increased secretion of PGE2 by the monocytes. Therefore, monocytes from patients with HCC and LC had an increased capacity of secreting both IL-1 and PGE2 over normal controls, but the effect of the suppressor function (PGE2 secretion) dominated in these patients.
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