[Biogenic amine metabolism in homeotherms exposed to pesticides of different chemical nature].

Some aspects of the biogenic amines -- serotonin and histamine metabolism in rats and guinea pigs following introduction to them of pesticides of different chemical nature, viz. gamma-isomer of hexachlorcyclohexane (lindane) and dimethyldithiocarbamate zinc (zyram) were studied. These pesticides were found to dissimilarly affect the passage with urine of the principal serotonin metabolite -- 5-oxyindol-acetic acid. A short-term (2 days) introduction to rats of large doses (34 mg/kg) of lindane and a protracted (90 days) action of low doses (1.7 mg/kg) produce changes in the content of serotonin and of 5-oxyindol-acetic acid in the brain, liver and kidneys. In the blood of guinea pigs receiving for a lenthy time (120 days) small amounts (4 mg/kg) of zyram shifts in the histamine-histaminase-histaminopexy system were revealed, this pointing to the ability of this pesticide to provoke the state of sensitization.