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  • Title: The effect of anti-interleukin 2 monoclonal antibody treatment on the survival of rat cardiac allograft.
    Author: Sakagami K, Ohsaki T, Ohnishi T, Saito S, Matsuoka J, Orita K.
    Journal: J Surg Res; 1989 Mar; 46(3):262-6. PubMed ID: 2646474.
    Abstract:
    The effect of anti-interleukin 2 monoclonal antibody (anti-IL2 MoAb) and the accumulation of intravenously administered 125I-labeled anti-IL2 MoAb were examined in heterotopic rat cardiac allografts. Mouse anti-human recombinant IL2 MoAb was obtained by the hybridoma technique. The anti-IL2 MoAb, termed 8H-10, was an IgG2a which inhibited IL2-driven [3H]TdR incorporation in cytolytic T lymphocyte line cells at a dilution of 2(6). 8H-10 was injected iv at a dose of 200 micrograms/day for 8 consecutive days, beginning on the day of transplantation. Hearts from F344 rats (RT11v1) were transplanted into ACI recipient rats (RT1av1). The mean survival time was 7.6 +/- 0.8 days in untreated controls, 9.0 +/- 1.2 days in additional controls treated with mouse anti-sheep red blood cell monoclonal antibody, and 25.3 +/- 18.4 days in the anti-IL2 MoAb (8H-10)-treated group (P less than 0.05). Furthermore, the accumulation of intravenously administered 125I-labeled anti-IL2 MoAb (8H-10) was specifically seen in the grafted heart. In conclusion, these results suggest that IL2 may play an important role in allograft rejection and that anti-IL2 MoAb may serve as a useful immunosuppressive agent in clinical transplantation.
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