The effect of CCA (Lobenzarit disodium) on the suppressor T cell function and the production of autoantibodies in New Zealand black and New Zealand white F1 mice.

A newly synthesized agent, disodium 4-chloro-2,2'-iminodibenzoate (CCA; Lobenzarit disodium), which prevents the development of autoimmune disease in B/W mice, and inhibits adjuvant arthritis in rats, was investigated to clarify its mode of action in B/W mice. CCA protected against the age-related decline of the suppressor T cell activity which played an important role in the regulation of both humoral and cell-mediated immunity. CCA also decreased the production of naturally occurring thymocytotoxic autoantibody (NTA) preferentially cytotoxic against the thymocytes and suppressor T cells, and inhibited both the antibody production to double-stranded DNA and the appearance of ANA in B/W mice.