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PubMedDate not supplied

[Adaptogenic effect of mebikar in emotional stress, physical exertion and hypoxia].

Adaptogenic effect of mebikar was revealed in experiments on cats, mice and rats. The drug was shown to decrease the emotional stress and to completely remove the stupor-like state in cats induced by stress situation and pain stimulation. The drug slightly increased the lifespan of animals under hypoxic hypoxia and raised the limits of maximum tolerable physical load. It lowered the accumulation of hypoxic lactate. Electron microscopy and biochemical analysis revealed the mebikar-induced increase in glycogen content in muscle cells of the myocardium and in skeletal muscles. The data obtained indicate that mebikar is conducive to optimization of the behavior and some processes of energy metabolism in animals exposed to emotional stress, exercise and hypoxic hypoxia.

Adaptation, Physiological↗
PubMed1981

[Effect of mebikar on focal epileptic activity].

Effect of mebicar on the epileptic activity (EA) and frequency of interepileptic activity discharges (IEAD) was studied in experimental focal cortical epilepsy induced by penicillin application to the sensomotor cortex of conscious rats. Mebicar in a dose of 300--100 mg/kg induced a dose-dependent suppression of EA in the presence of the increased frequency of IEAD. During rhythmic stimulation of some areas of the thalamus mebicar completely abolished high-frequency EA, promoting consecutive alternating on the electrocorticogram of periods of responses to each stimulus with dead bands. The antiepileptic effect of mebicar was compared with that of diazepam in the similar model of epilepsy. It is suggested that the action of mebicar on the focus of epileptic activity in the cerebral cortex is related to the potentiation of synaptic inhibition of the neurons in the focus of epileptic activity.

Animals↗
PubMed1981

[Effect of mebikar on the experimental and clinical course of traumatic shock].

The effect of mebikar upon the course of traumatic shock was studied on the basis of experimental investigations and clinical observations. The authors have found a positive effect of the drug on indices of acid-base state, histostructure and cellular composition of the liver whose disturbance has a great pathogenetic significance in shock. The application of mebikar considerably improved the results of treatment in clinic and reduced lethality in experiment. It was supposed that the positive effect of the drug was associated with prevention of the development of circulatory disorders and with the maintenance of oxidation-reduction process and the histostructure of tissues.

Acid-Base Equilibrium↗
PubMedDate not supplied

[Effect of mebikar on the state of animals under extreme conditions].

A new original tranquilizer mebicar exerts a protective action on some parameters of body function under the influence of extreme conditions (stress, hypoxia). Antihypoxic effect of the drug manifests within a wide dosage range (100-1000 mg/kg) and compares favourably with the effect of sodium hydroxybutyrate. Mebicar does not affect the muscle tone, movement coordination or working capacity of the animals. It is suggested that the normalizing action of mebicar as tranquilizer and antihypoxic agent may be related to its involvement in metabolism.

Animals↗
PubMed1976

[Production of phage-resistant mutants of E. coli, producers of penicillin acylase].

Full resistance to the virulent phage C1 in E. coli N68 is usually accompanied by decreased capacity for penicillinacylase production. For rapid selection of phage resistant mutants possessing penicillinacylase activity comparable with that of the initial bacteria a method was proposed. The method provided comparison of the penicillinacylase activity of the bacterial colonies grown on solid media with addition of phenylacetic acid as the enzyme inductor. A great number of mutants forming colonies on the solid medium in the presence of phage C1 was compared with the use of the above method and a mutant of E. coli N68-PR-I resistant to the phage with penicillinacylase activity equal to 68 per cent of that of the bacteria of the wild type was selected. Mutant N68-R-5 with increased resistance to phage CI was selected among the mutants of E. coli N68 resistant to rifampicin. The penicillinacylase activity of this mutant was not less than of E. coli N68. Phage CI can lyse the cells of strain N68-R-5. Still these bacteria possess a markedly decreased capacity for the phage reproduction.

Amidohydrolases↗
PubMed1975

[Bacteria-infectious viruses in Penicillium chrysogenum strains with differing antibiotic activity].

A new virus capable of replication on E. coli C was isolated from Penicillium chrysogenum. Six strains of P. chrysogenum differing in the cultural-morphological and biochemical properties and the titer of virus PBV5 were studied. The data provided a supposition that there were definite connections between the titer of virus PBV5 in the mycelium and the fungus ability for the antibiotic production.

Bacteriolysis↗
PubMed1975

[PBV5 virus induction in Penicillium chrysogenum mycelium].

The effect of some physical (increased temperature, UV light) and chemical (N-nitrosomethylbiuret, proflavin, acridine orange) factors on the virus titer in 2 strains of Penicillium chrysogenum was studied. Thermoinactivation of the virus and its induction under the effect of UV light and proflavin were shown. Slight induction was observed with N-nitrosomethylbiuret and acridin orange. It was supposed that induction of the virus in the mycelium of Penicillium chrysogenum was spontaneous.

Biureas↗