Effect of monocrotophos on mono amine oxidase activity in albino rats.

Monocrotophos inhibited monoamine oxidase (MAO) activity both in vitro and in vivo in liver, kidney and brain areas of albino rats. In vitro effect was more pronounced than the in vivo effect. During in vivo daily treatment with sublethal doses of Monocrotophos, the MAO activity was significantly inhibited after 1h to 7 days of treatments. Later recovery of inhibition was noticed which might be attributed to the enhanced absorption of Monocrotophos to protein and fat bodies or enhanced metabolic dispositional mechanisms. Brain areas exhibit varied responses to Monocrotophos toxicity.