Ghazi-Khansari M, Rezvani N, Bani-Assadi S, Zarrindast MR. Effects of lead exposure on licking and yawning behaviour in rats.
PHARMACOLOGY & TOXICOLOGY 1998;
83:120-4. [PMID:
9783330 DOI:
10.1111/j.1600-0773.1998.tb01454.x]
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Abstract
In the present study, effects of lead exposure on licking and yawning behaviour have been studied. The dopaminergic receptor agonist, apomorphine (0.15, 0.25 and 0.5 mg/kg), induced dose-dependent licking in rats. The maximum response was obtained with 0.5 mg/kg of the apomorphine. Lead acetate (0.05%) exposure significantly increased apomorphine-induced licking. Yawning induced by the D2 dopaminergic agonist, bromocriptine (2, 3, 4, 8 mg/kg), and the cholinergic drug, physostigmine (0.1 or 0.3 mg/kg), was significantly decreased by lead acetate (0.05%) exposure. It may be concluded that the behaviour induced by dopaminergic or cholinergic agents can be affected by lead subchronic exposure.
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