Abstract
The acute behavioural consequences of intragastric p,p'-DDT in high doses to mice are stimulus sensitive abrupt muscle jerks (myoclonus). The serotonin (5-HT) precursor 5-hydroxytryptophan (5-HTP) ameliorated in contrast to the natural precursor tryptophan, the neurotoxin-induced myoclonus. The extracerebral decarboxylase inhibitor carbidopa and the selective 5-HT reuptake inhibitor paroxetine both enhanced the antimyoclonic action of 5-HTP. The effect was reversed by the 5-HT receptor blockers cinanserine and methysergide. The data add further evidence to a central serotonergic mechanism involved in p,p'-DDT induced myoclonus.
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