[Posthypoxic changes in the metabolism of the developing brain].

Effect of intranatal hypoxia on content of adenylic nucleotides, glycogen, lactic acid as well as on activity of ATP-ases and concentration of free amino acids was studied in rat brain tissue at various periods of postnatal development (I day-5 months). Acute hypoxia was accompanied by a decrease in content of adenylic nucleotides and glycogen, by an increase in concentration of lactic acid and by a decrease in activity of ATP-ases. During the subsequent periods, in brain tissue of animals, subjected to hypoxia, posthypoxic activation of energy metabolism was found, which depended apparently on the decreased intensity of plastic processes during the phase of active growth and of neurone differentiation.

[Fatty acid make-up of the muscle tissue lipids of ocean fish].

Consequent upon the results of investigating fatty acids composition in the tissue lipids of a number of marine fish (marmoreal and green nototenia, merow, stavrida, klykach, lufar, marine perch and marine bream) of different degrees of fatness there were ascertained substantial differences in the correlation of basic acid components and the nutritional value of the lipids. A comparison between the overall lipid content and the quantity of highly unsaturated acids enabled it to disclose a possible relative resistance of the studied fish to the oxidative lipids decay.