[Combined effect of laser radiation and alternating magnetic fields on Staphylococci]. / Kombinirovannoe vliianie lazernykh izluchenii i peremennykh magnitnykh polei na stafilokokki.

The influence of infrared and helio-neon lasers, alternate magnetic fields and their combination on the growth phases of staphylococci was studied. The study revealed that in most cases the inhibition of the growth phases of staphylococci was caused by the treatment of staphylococcal cultures with alternate magnetic fields in combination with infrared laser irradiation. The most effective treatment conditions were found.

[Iron-sulfur centers in the Staphylococcus aureus respiratory chain]. / Zhelezosernye tsentry v dykhatel'noi tsepi Staphylococcus aureus.

Using low temperature EPR spectroscopy, signals of iron-sulfur centers with g-factors of 2.02 and 1.94 were detected in the respiratory chain of St. aureus membranes. According to their relaxation parameters and redox properties, these iron-sulfur centers are similar to iron-sulfur centers S-1 and S-3 corresponding to succinate dehydrogenases of mitochondria and bacterial membranes.

[Action of benzohydrothiochromylium salts on bacterial membranes]. / Deistvie solei benzogidrotiokhromiliia na membrannyi apparat bakterii.

Cultivation of Staphylococcus 209-P and Micrococcus lysodeikticus cells on media containing new antibacterial preparations--iodide and trifluoroacetate derivatives of benzohydrothiochromylium resulted in a remarkable lesion of the membrane respiratory apparatus, i.e. the amounts of membrane polypeptides, the specific concentration of cytochromes, the activities of reductases and oxidases--NADH, malate and lactate decreased. Profound changes in the cell cytology were observed.

[Action of dioxidine on the membrane apparatus of the bacterial cell]. / Deistvie dioksidina na membrannyi apparat bakterial'noi kletki.

A study of dioxydine effect on the membrane apparatus of Staphylococcus aureus 209 P and Micrococcus lysodeikticus revealed a decrease in the dehydrogenase activity of membrane preparations and in the specific concentration of cytochromes, if cells had been cultivated in a medium with subbacteriostatic concentrations of dioxydine. The total activity of the respiratory chain was slightly decreased. Conservatism of the membrane apparatus of the bacteria studied was demonstrated.

[Comparative study of the action of different antibiotics on the membrane dehydrogenase activity in Micrococcus lysodeikticus]. / Sravnitel'noe izuchenie deistviia razlichnykh antibiotikov na aktivnost' degidrogenaz membran u Micrococcus lysodeikticus.

The object of this work was to study the effect of antibiotics belonging to the groups of penicillin, tetracycline and aminoglycosides on the activity of lactate dehydrogenase, alcohol dehydrogenase and malate dehydrogenase in the membranes of Micrococcus lysodeikticus. Streptomycin, benzylpenicillin, carbenicillin and phenoxymethylpenicillin decreased the activity of the above dehydrogenases. Tetracycline and oxytetracycline activated lactate dehydrogenase and alcohol dehydrogenase in the membranes, but decreased their activity in the supernatant fraction of disintegrated membranes. The enzyme activity in the membranes was particularly inhibited by neomycin.