[NIGHT SHIFT WORK AND HEALTH DISORDER RISK IN FEMALE WORKERS].

There was evaluated the risk to health in females employed in shift work, including night shifts. According to the data of periodical medical examinations health indices of 403 females employed in shift work, including night shifts, were compared with indices of 205 females--workers of administrative units of the same enterprise. Overall relative risk (RR) for the health disorder associated with the night shift was 1.

[Effect of iron, zinc, and copper on lipid peroxidation in liver in vivo].

Changes in the levels of lipid peroxides, natural antioxidants (NA), iron, zinc and copper as well as the ability of the lipid substrate to oxidize in animal liver in the presence of iron, zinc and copper have been studied. It has been found that those metals increase the amplitude of natural fluctuations in iron, zinc and copper levels in the liver (by 5-30% in comparison with control). Within the first few hours following administration of iron and copper, the concentration of lipid peroxidation (LPO) products in animal livers increases, while the NA level and lipid oxidizeability decrease, in contrast.

[Reduction of voluntary alcohol consumption under the effects of prolonged-action zinc].

It was revealed that an involuntary rats' intoxication with 10% ethanol solution during 8 months caused a reduction of zinc content in the brain. A subcutaneous depot administration of highly dispersed zinc powder in a dose of 5 mg/kg reduced ethanol consumption under conditions of free choice for two weeks. This effect of the preparation was associated with normalization of zinc content and increase of a malondialdehyde level in the brain.

[The study of the additive antioxidative activity of total natural lipid antioxidants].

Kinetics of methyl oleate and ethylbenzene oxidation was studied in presence of tocopherol homologues alpha, beta, gamma, delta, tocopherol derivatives C6 and C11, ubichinol QH2-9, which were isolated from natural lipids. Effects of various natural antioxidants in mixtures were interindependent.

[Changes in the physico-chemical characteristics of mouse liver lipids after administration of a mixture of unsaturated fatty acids].

The effects of a mixture of unsaturated fatty acids (UFA) on changes in the lipid oxidation substrate, a system of natural antioxidants and the functioning of a system controlling lipid peroxidation were studied. It was shown that arachidonate induces the incorporation of fatty acids into individual lipid fractions and the dilution of lipids by UFA esters, as a result of which the relative amount of natural antioxidants diminishes. Under these conditions, the oxidative capacity of lipids decreases, which manifests itself in a reduction of the rate of natural antioxidants utilization and an increase in their number.