[Effect of exogenous superoxide dismutase and 1,4-diazobicyclo-(2,2,2,)-octane on the resistance of mice to acute oxygen poisoning].

Single injection to mice of a perified preparation of superoxide dismutase (1000 units, intravenously) combined with catalase (0.5 mg) or without it failed to protect from the toxic action of 100% oxygen under the pressure of 5 ata. 1,4-diazobicyclo (2.

Membrane and intracellular hydrolysis of peptides: differentiation, role and interrelations with transport.

The possible relative importance of the membrane and intracellular peptidases of the enterocytes in splitting dietary peptides to amino acids has been analysed. On the anoxic criterion, membrane hydrolysis was found to be predominant. Model experiments revealed cooperative interactions between the membrane enzyme and the coupled transport system.

[Study of rat erythrocyte superoxide dismutase activity during a toxic regimen of interrupted hyperbaric oxygenation].

Development of toxic manifestations in rats under conditions of hyperoxia was accompanied by a significant lowering of the rat erythrocyte superoxide dismutase activity. The incubation of control rats hemolysate with hydrogen peroxide (10(-3)M) or with kumole peroxide (1.6 10(-4)M) also led to pronounced fall of the initial erythrocyte superoxide dismutase activity.

[Transformation of angular accelerations by the semicircular canal system of the vestibular apparatus].

Transformation of angular accelerations by the system of three semicircular channels is considered which takes into account mutual influence of vertical channels through a common crus.