[Experimental study of the effect of formaldehyde during embryogenesis on the activity of rat liver enzyme systems in ontogenesis].

The pregnant rats were treated with formaldehyde (0.5 mg/kg daily per os) during whole period of pregnancy. The activity of cytochrome-c-oxidase, malate dehydrogenase, nucleotidase, glucose-6-phosphatase, beta-glucuronidase, N-acetyl-beta-glucosaminidase, beta-galactosidase, H(+)-ATPase, glutamate dehydrogenase, NAD- and NADP-isocitrate dehydrogenase, fructose-bisphosphate aldolase, glucose-6-phosphate dehydrogenase and content of protein in liver celts of offsprings (newborns, 2 weeks age and 2 months age) were studied.

[Activity of the xenobiotic metabolism system under the effect of chemical pollution of the atmosphere and water].

Functional state of the system involved in biotransformation of xenobiotics in animal liver tissue was studied under conditions of combined chemical contamination of atmospheric air and water simulating the typical real loading. The model loading studied caused in some cases an induction of the microsomal monooxygenases without activation of UDP-glucuronosyl transferase, but simultaneously with accumulation of malonic dialdehyde; this suggests that metabolic alterations observed may be involved in development of pathology.