Absence of a protective effect of corticosterone on 0-0-diisopropyl phosphorofluoridate (DFP) induced delayed neurotoxicity in chickens.

Chickens given 15 to 45 ppm dietary corticosterone 1 day prior to and 5 days following subcutaneous administration of 1 mg/kg 0,0-diisopropyl phosphorofluoridate (DFP) were not protected from either clinical delayed neuropathy, depression of neurotoxic esterase activity or advanced degenerative peripheral nerve myelinated fiber damage.