[Variants of effective coefficients of oxygen diffusion in the tissues of rats of different age in relation to alimentary factors].
A method intended to record and analyze kinetics of decrease in the initial part of current on platinum diffusion oxygen sensor has been used to estimate efficient oxygen diffusivities (DO2) to the working surface of sensor in the muscular tissue and in tissue of the subcutaneous area of posterior extremities in anesthetized rats of different age in control and after addition of plant fats with various content of saturated fatty acids to their usual ration. It is shown that average value of DO2 in the muscular tissue of young animals is higher than in the muscle of adult animals. In adult animals DO2 of the subcutaneous area is higher than that of the muscle. There are no significant differences of coefficients in the examined tissues of young animals. Addition of plant fats to the basal food ration causes differently directed changes of DO2 in tissues of young and adult animals. These changes depend on the tissue of animal and saturation of fats. A problem on the existence of translation transfer of substances parallel with diffusion one in live tissues is under discussion.
Sushko
B S
BS
D000367:Age Factors; D000818:Animals; D004041:Dietary Fats / Q000008:administration & dosage*; D004058:Diffusion; D005227:Fatty Acids / Q000008:administration & dosage*; D006614:Hindlimb; D009132:Muscles / Q000378:metabolism*; D010100:Oxygen / Q000493:pharmacokinetics*; D010101:Oxygen Consumption / Q000502:physiology*; D051381:Rats
D004041:Dietary Fats; D005227:Fatty Acids; D010100:Oxygen
Variatsii éffektivnykh koéffitsientov diffuzii kisloroda v tkaniiakh krys raznogo vozrasta pod deĭstviem alimentarnogo faktora.