Abstract
The effect of methomyl and cypermethrin insecticides on the B6-dependent kynurenine hydrolase (KH) and kynurenine aminotransferase (KATE) was studied. These insecticides induced pronounced inhibition on the (KH) and (KATE) enzymes after single dose treatment. Repeated doses of methomyl induced inhibition on the (KH) and (KATE) activities, whereas repeated treatment with cypermethrin had no effect on the activities of these enzymes. In vitro methomyl inhibited (KH) and (KATE) enzymes at 10(-6)M up to 10(-3)M, through a competitive mechanism. Methomyl and cypermethrin are capable of causing alterations in the kynurenine metabolizing enzymes of mouse liver.
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Schedule a callMore From: Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes
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