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  • Title: Anti-interleukin-2 receptor monoclonal antibody therapy supports a role for Th1-like cells in HgCl2-induced autoimmunity in rats.
    Author: Dubey D, Kuhn J, Vial MC, Druet P, Bellon B.
    Journal: Scand J Immunol; 1993 Apr; 37(4):406-12. PubMed ID: 8469923.
    Abstract:
    Brown-Norway (BN) rats injected with HgCl2 develop an autoimmune disease characterized by a T-dependent polyclonal B-cell activation. Increase in major histocompatibility complex class II molecule expression on B cells concomitant with enhancement of serum IgE concentration supports the involvement of the T helper 2 (Th2)-like subset in the induction of the disease. The mercury disease is autoregulated and does not develop in Lewis (LEW) rats. Considering the reciprocal regulation, well defined in mice, between the Th1 and Th2 subsets, we addressed the role of the Th1-like subset in this disease. Brown-Norway and LEW rats injected with HgCl2 were treated with NDS61, a mouse anti-rat-IL-2R MoAb that blocks mainly Th1 cells. Data reported herein show that: (1) HgCl2 treatment does not modify either the percentage of IL-2R+ cells or IL-2R expression in both BN and LEW rats; (2) treatment of BN rats with NDS61 MoAb does not modify the induction phase of the mercury disease but delays in part the regulation phase; (3) such a treatment leads to some immune abnormalities in LEW rats; (4) HgCl2 markedly potentiates the anti-mouse Ig antibody response in BN rats which probably limits the effect of this treatment. This study supports a role for the Th1-like subset in HgCl2-induced autoimmunity in the rat.
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