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Fahotyp and sensitivity to medications phage film-forming strains Staphylococcus aureus, isolated from respiratory tract

100%
Voronkova O. S., Vinnikov A. I.
International Letters of Natural Sciences
|
2016
|
tom 51
The study of biological properties of filmforming Staphylococcus aureus strains, including its sensitivity to bacteriophages, is one of the important tasks of laboratory diagnostic service that allows, if it necessary, choose an alternative treatment strategy and to establish the sources of strains. In the study of material from the nose and throat of 26 persons-volunteers the strains of S. aureus were selected. Among them 16 (61.5%) were able to form biofilms. Analysis of resistance to phages drugs of filmformation strains of S. aureus showed that 87.5% strains were sensitive the phages drugs "Piobacteriophage" and "Bacteriophage staphylococcal liquid". Phage type was identified for 9 (56.3%) strains. 64.3% of these strains were sensitive to the 1 phage from set, 21.4% – to 2 and 14.3% – 3 phages. It was determined that 77.8% strains were typed by phages from third group. For 1 strain detected simultaneous sensitivity to phages of 2 and 3 groups. With phage 81 (out of group phage) interacted 4 strains: 2 showed sensitivity only to him and another 2 were also susceptible to phage of third group.
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Activity of catabolic enzymes of film-forming strains of Staphylococcus aureus

81%
Voronkova O. S., Shevchenko T. M., Vinnikov A. I.
International Letters of Natural Sciences
|
2017
|
tom 61
The activity of glucose catabolism pathways of film-forming strains of staphylococci isolated from vagina of women with dysbiosis of reproductive tract and from women without disorders of microflora was studied. It was established that the investigated film-forming strains utilized the carbohydrates by pentose phosphate pathway mainly, as indicated by 23-33% higher enzyme activity compare to strains isolated from healthy women. Instead strains, isolated from women without dysbiosis of reproductive tract, have higher activity of glycolytic enzymes on 13- 28%. The prevalence of glycolytic transformation of glucose by strains isolated from healthy women also indicates by the depression of glucose oxidation during action of monoiodinacetate – classical inhibitor of glycolysis. It inhibits glycolysis of strains isolated from healthy women more significant. It was established that oxidase activity of film-forming strains isolated from women with dysbiosis, increased over 40% during the use of basic substrates of citric acid cycle. These data indicate a general increase of catabolic activity of oxidative type of staphylococci isolated during vaginal dysbiosis and able to form biofilm.
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