title: Evaluation of niridazole as a suppressant of cellular immunity in chickens.
abstract: Niridazole was administered by gavage to 5-week-old chickens at dosage levels of 50, 100, and 200 mg/kg of body weight. The 2 larger dosage levels were toxic and resulted in the death of many of the recipients. The 50 mg/kg dosage level was not lethal, but depressed weight gain. Cellular immune functions were measured by responses of lymphocytes in whole blood to T-cell mitogens and by delayed hypersensitivity reactions to tuberculin. Blastogenic responses to phytohemagglutinin and concanavalin A were reduced in niridazole-treated chickens with responses of controls. Wattle tests measuring delayed hypersensitivity were positive only in control chickens; reactions in niridazole-treated chickens did not differ from nonimmunized controls.
mesh_terms: D000818:Animals; D002645:Chickens / Q000276:immunology*; D007111:Immunity, Cellular / Q000187:drug effects*; D008213:Lymphocyte Activation / Q000187:drug effects; D008297:Male; D009560:Niridazole / Q000494:pharmacology* / Q000633:toxicity; D011201:Poultry Diseases / Q000139:chemically induced; D014374:Tuberculin Test
chemical_list: D009560:Niridazole