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  • Title: Clearance of Rh D-positive red cells with monoclonal anti-D.
    Author: Thomson A, Contreras M, Gorick B, Kumpel B, Chapman GE, Lane RS, Teesdale P, Hughes-Jones NC, Mollison PL.
    Journal: Lancet; 1990 Nov 10; 336(8724):1147-50. PubMed ID: 1978026.
    Abstract:
    Two human monoclonal antibodies, one IgG3 and one IgG1, with anti-Rh D specificity, were tested for their ability to clear red cells. Samples of red cells from 12 D-positive subjects were sensitised in vitro with various amounts of antibody, the number of antibody molecules bound to the cells was estimated, and the cells were reinjected into the donor's circulation. Both antibodies mediated clearance but substantially fewer IgG3 than IgG1 antibody molecules were required to produce a given rate of clearance. The IgG3 antibody was slightly more effective than polyclonal anti-D, as judged by comparison with previously published results. Since there is believed to be an association between the rate of red cell clearance by anti-D and the ability of the antibody to suppress D immunisation, the IgG3 monoclonal antibody may prove suitable for the immunoprophylaxis of Rh D haemolytic disease.
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