[Provision of workers and employees of Kuzbass industrial enterprises with vitamins C, E, A and beta-carotene].

The content of vitamins C, E, A and beta-carotene was studied in the blood serum of 404 workers and employees of the Kuzbass industrial enterprises. Insufficient providing of the body with ascorbic acid, tocopherol and beta-carotene has been revealed. The number of workers and employees with vitamin C deficiency comprises at an average 95%, with vitamin E deficiency--9%, and with beta-carotene deficiency--34%.

[State of rat embryogenesis and progeny during exposure to foreign substances contained in the food].

Examination of the action of different xenobiotics (pesticides, heavy metals) on embryogenesis and progeny allowed the methodological approaches to this line of research to be suggested. It is recommended that xenobiotics be administered in different periods of embryogenesis: from day 1 to day 7, from day 7 to day 15 and from day 1 to day 20. It has been established that at cross mating the most pronounced alterations arose in the progeny of experimental males.

[Activity of lactate dehydrogenase and glucose-6-phosphate dehydrogenase activity in rat testicular tissues after exposure to certain pesticides].

In experiments on male Wistar rats the action of organophosphorus pesticides (chlorophos and methylnitrophos) and cineb, belonging to compounds of the carbamine series, on the LDH and H-6-PDH of the testes tissues and their isoenzymatic spectra, was studied. The results of investigations demonstrated substantial changes in the activity of the LDH and H-6-PDH isoenzymes occurring with a long-term priming for 9 months of chlorophos in a dose of 1 mg/kg of the mass. On the other hand, with introduction of methylnitrophos (in a dose of 0.

[Effect of tocopherol and protein deficiency on the activity of enzymes and their isoenzymatic spectra in rat testes].

The symptoms of E-avitaminosis against protein deficiency in the ration become manifest much earlier, i. e. in 12--16 weeks of the experiment instead of 24--36 weeks with the primary-deficient ration.