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Title: Endosulfan and cholinergic (muscarinic) transmission: effect on electroencephalograms and (/sup 3/H)quinuclidinyl benzilate in pigeon brain

Journal Article · · Environ. Res.; (United States)

Single exposure of endosulfan (5 mg/kg) to pigeons (Columbia livia) caused neuronal hyperexcitability as evidence by spike discharges of 200-500 ..mu..V in the electroencephalograms (EEG) from the telencephalon and hyperstriatum, but there was not effect on the ectostriatal area. Cholinergic (muscarinic) receptor binding study using (/sup 3/H)quinuclidinyl benzilate ((/sup 3/H)QNB) as a specific ligand indicated that a single exposure to 5 mg/kg of endosulfan caused a significant increase in (/sup 3/H)QNB binding to the striatal membrane. Behavior study further indicated that a single dose of 200 ..mu..g/kg of oxotremorine produced a significant induction in the tremor in endosulfan-pretreated pigeons. The results of this behavioral and biochemical study indicate the involvement of a cholinergic (muscarinic) transmitter system in endosulfan-induced neurotoxicity.

Research Organization:
Industrial Toxicology Research Centre, Lucknow, India
OSTI ID:
5006598
Journal Information:
Environ. Res.; (United States), Vol. 40:2
Country of Publication:
United States
Language:
English