[Cytotoxicity in psoriasis].

The authors study three cytotoxicity system in psoriasis: direct cytotoxicity (DCC), antibodies mediated cytotoxicity (ADCC) and activated lymphocytes mediated cytotoxicity (PCC). The results of DCC and PCC are in the normal values, while ADCC are a somewhat increased, showing a hyperactivity of this system, which could explain some physiopathological phenomena of this disease. We consider this finding as secondary to an alteration of the immune system by dysbalance of B-T lymphocytes.