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  • Title: Schistosoma mansoni infection in humans and primates induces cytolytic antibodies to surface Le(x) determinants on myeloid cells.
    Author: Nyame AK, Pilcher JB, Tsang VC, Cummings RD.
    Journal: Exp Parasitol; 1996 Mar; 82(2):191-200. PubMed ID: 8617346.
    Abstract:
    The Lewis x antigen (Le(x); Gal beta 1-4[Fuc alpha 1-3]GlcNac beta1-R), which is present on the surfaces of human cells, is also synthesized by the human helminthic parasite Schistosoma mansoni. We now report that IgM and IgG antibodies to Le(x) antigens are present in the sera of humans and rhesus monkeys infected with S. mansoni, whereas these antibodies are completely absent in uninfected individuals. The sera from infected humans and monkeys mediate specific complement-dependent cytolysis of human promyelocytic leukemic HL-60 cells, which bear surface Le(x) antigen. Furthermore, the major activity in sera from infected individuals toward HL-60 cells is due to anti-Le(x) reactivity.
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