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Biomedical subjects

M G Matveev

Publications and source records attributed to M G Matveev.

3 recordsLinked to original sources
PubMed1980

[Light-induced changes in activity of Na, K-ATPase from the retinal photoreceptors of vertebrates: possible mechanism].

The mechanism of light-induced changes in the activity of Na,K-ATPase from plasma membranes (PM) of photoreceptor cells was studied in vitro. Illumination resulted in inhibition of the ATPase activity and an increase of 18O exchange between water and Pi. The maximum light effect was revealed when the PM contained both the inner segments of the rods (RIS) and rod outer segments (ROS) of the photoreceptor cells. Lipid peroxidation stimulated by the FeSO4+ascorbate system induced a decrease of the ATPase activity. Antioxidants (ionol, Na2SeO3, vitamin E) prevented the effect of the lipid peroxidation products on NA,K-ATPase and the photoinduced changes of the enzyme activity. It is supposed that the photoinduced changes of the Na,K-ATPase activity in vitro are due to lipid peroxidation of photoreceptor PM.

Animals↗
PubMed1980

[Method of determing the body surface of rabbits].

Body surface determination in rabbits is essential for carrying out biological experiments with these animals in burn shock, and in hemorrhagic, endotoxic and other types of shock as well. In the experiments described a nomogram is suggested after processing data from the measurement of a variety of body parts in 100 unbred rabbits, enabling polynominal regression analysis on the basis of which a nomogram is worked out. The nomogram outlines the dependence of body surface in case of known body weight of the rabbit. In the work are submitted the values for the trunk, head, fore and hind limbs of rabbits which values greatly facilitate the investigator in carrying out experiments on individual body parts. All data are submitted in relative values and in percentage of the total body surface.

Animals↗