[Effects of the combination of a pesticide, lindane, and a sulfur depleted diet on pregnancy in the rat]. / Effects de l'association d'un pesticide, le lindane, à un régime pauvre en soufre sur le déroulement de la gestation chez la ratte.

Effects of assocation of lindane ingestion and sulfur depletion on pregnancy in the rat. Sulfoconjugation stands as one of the main processes of foreign compound detoxication in mammals. When feeding conditions are adequate, sulfate ions necessary to form sulfoconjugates are provided by the sulfur aminoacids of the diet. The feeding to pregnant rats of a diet containing lindane, when sulfur aminoacids are limiting factors, should lead to competition between their utilisation for anabolic or detoxifying processes. The balance between stimulation of glucuroconjugation and sulfoconjugation seems to depend on which of the 2 compounds necessary for detoxification is the most limiting factor. Glucuroconjugation spares sulfur aminoacids for foetal growth; sulfoconjugation spares glucose for foetal utilisation. The foetal needs appear to modulate the orientation of the maternal detoxication processes; foetal anabolism is predominent over detoxication.