title: Lymphocyte transformation in nickel allergy: amplification of T-lymphocyte responses to nickel sulphate by macrophages in vitro.
abstract: The cell-mediated immunity of thirty-four nickel contact dermatitis patients was evaluated by performing lymphocyte stimulations with NiSO4 (1.25 and 6.25 microgram/ml) and tuberculin (PPD), phytohaemagglutinin-P, pokeweed mitogen, and concanavalin A. Twenty-six of the patients were nonatopic and eight atopic. Forty-nine healthy subjects served as controls. Nickel sulphate stimulation was significantly increased (P < 0.005) in the allergic subjects, whereas PPD stimulation was decreased (P = 0.01). The responses to the other mitogens did not differ significantly between the control subjects and the patients. The lymphocyte transformation reaction to nickel sulphate was shown to occur in T cells and to be enhanced by the helper function of macrophages.
mesh_terms: D000293:Adolescent; D000328:Adult; D001402:B-Lymphocytes / Q000276:immunology; D002478:Cells, Cultured; D003876:Dermatitis, Atopic / Q000276:immunology; D003877:Dermatitis, Contact / Q000276:immunology*; D000939:Epitopes; D005260:Female; D006801:Humans; D008213:Lymphocyte Activation; D008264:Macrophages / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D008934:Mitogens / Q000494:pharmacology; D009532:Nickel / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000939:Epitopes; D008934:Mitogens; D009532:Nickel