[The effect of vasotocin and mesotocin on the suprarenal gland of the frog Rana temporaria in vivo and in vitro].

Biochemical and morphometric analyses have been made of the effects of nonapeptide neurohormones, vasotocin and mesotocin, on the chromaffin tissue of the adrenal gland of the frog, both in vivo and in vitro experiments. It was shown that vasotocin exerts stimulating effect on the suprarenal gland whereas mesotocin inhibits the latter. In vitro experiments revealed that adrenalin may abolish the effect of nonapeptides on the suprarenal gland.

[Microsomal hydroxylating system of the mouse liver in toxic forms of influenza infection].

The paper presents the experimental model of toxic influenza infection induced by A/Victory/35/72 (H3N2) strain adapted to CBA mice. The virus toxicosis was shown by means of ESR technique to be accompanied by a decrease of both the content of the active form of cytochrome P-450 and the activity of p-nitroanisole o-demethylase. In microsomes there was activation of lipid peroxidation (LP) and an increase of microviscosity of lipid matrix.

[Oxidative phosphorylation in liver mitochondria in toxic form of experimental form of influenza].

The effect of free radical processes on the oxidation-phosphorylation activity in the liver of CBA-mice has been studied, using a model of toxic form viral infection. The EPR-spectroscopic and electrochemical methods applied in the study of animals infected with pathogenic form of the influenza virus made it possible to reveal a decrease in the activity of the respiratory chain in mitochondria. This seems likely to be due to accumulation of endogenic nitric oxide in the liver tissue.

[Lipid asymmetry and alpha-tocopherol distribution in outer and inner monolayers of bilayer lipid membranes].

Using chemical modification of aminophospholipids (phosphatidylethanolamine, PEA; phosphatidylserin, PS), the location of these phospholipids and their fatty acids has been studied in the inner and outer monolayers of unilayer liposomes. It has been shown that both PEA and PS were located predominantly in the inner monolayer and contained most of the polyenoic fatty acid residues. alpha-tocopherol incorporated into these liposomes was also located predominantly in the inner monolayers.

[Effect of the segregation and accumulation of chloroquine and daunorubicin by L cells (LSM subline) on the activity of lysosomal hydrolases].

Kinetics of chloroquine and daunorubicin (DNR) uptake by cultured L cells (subline LSM) has been studied. With their constant concentrations in the medium the uptake of both chloroquine and DNR was characterized as a two phase process. Within 1.

[Adrenergic innervation and reactivity of the blood vessels of different organs].

The structural and functional heterogeneity in rat mesenteric and hind leg arteries has been established. The results of histochemical, biochemical and physiological studies showed the change of adrenergic plexus density, content and ratio of catecholamines and contractility of smooth muscle cells along the superior mesenteric artery. The proximal part of the artery is sparsely innervated and contains only traces of noradrenaline.

[Catecholamine content in the wall of the thoracic duct of the dog during postnatal development].

Studies have been made on the content of catecholamines (norepinephrine, adrenaline, dihydroxyphenylalanine) in the wall of the thoracic lymphatic duct of puppies during their first 3 months of postnatal life. It was found that within this period, the content of norepinephrine increases, that of adrenaline remains unchanged, whereas dihydroxyphenylalanine is detected only in animals of the first month. The increase in norepinephrine content indicates gradual maturation of the adrenergic innervation in the wall of the lymphatic duct.

[Effect of Freund's complete adjuvant on the catecholamine content in the adrenals and brain of white rats].

The authors studied the effect of a single subcutaneous injection of 0.3 ml of complete Freund's adjuvant on catecholamine content in the adrenal glands and the brain of Wistar rats. There proved to be a sharp reduction of adrenaline and noradrenaline content per gm of adrenal gland raw tissue, and per one adrenal gland at periods of from 1 to 5 weeks after the adjuvant administration, and also a loss of the adrenal gland weight.

[Catecholamines of the blood vessels of Rana temporaria frogs].

In histochemical (with the glyoxylic acid) and biochemical (spectrofluorimetric trioxyindolic method) investigations sources and content of catecholamines (dopa, noradrenalin, adrenalin) in the blood vessels, sympathetic chains, adrenals and cardiac ventricles have been studied in autumn-winter and spring-summer frogs at various temperatures. It was found that the catecholamines in the studied tissues are located in the sympathetic neurons, adrenergic terminals and chromaffin cells. The ratio of these structures in different tissues was various.