The detection methods for microbial agents that have eidemiological significance are diversity but cultivation on nutritional media remains the gold standard in microbiological diagnostics. Choice of medium depends on the conditions in which bacteria were early and is present. The nature life determines its physiological peculiarity then a metabolic plasticity promote to survive and to save the virulence. In this review on the example of Yersihia pestis and Vibrio cholerae performed evaluations of the efficient decisions for the bacterial media development. It is declared advantage of baker's yeast hydrolisate as the nutrition media base.
Aim. The study the attitude of population towards the necessity of vaccination. Materials and methods. The survey about the attitude towards vaccination among different groups of population was held. In total there were 1209 respondents: 1031 students of medical, humanitarian and technical universities and 178 parents of children under 2. Results. The most positive attitude towards vaccination was shown by medical students (77%) and parents (71%) and only 33% and 37% of humanitarian and technical students correspondency realize the significance of vaccination. It is worth noting that large number of people could not define their attitude to vaccination. The majority of respondents notices the lack of knowledge about vaccination wherein less than 50% of respondents get the information from doctors. The rest gets it from different sources mostly from the Internet. About 80% of respondents would prefer to get answers to their questions about vaccination in the Internet. Conclusion. The adherence of population of Russia to vaccination has a rather low level. The main reason for it is the lack ofknowledge and availability of true information about vaccination. It is necessary to use diverse sources of information to provide the population with true facts about vaccination, its significance and safety via mass media and the Internet as well.
Aim. An attempt to use MALDI-TOF mass-spectrometry method for identification of leptospiral isolates on the serovar level. Materials and methods. 8 reference Leptospira spp. and 11 leptospira strains isolated from leptospiral patients and infected animals in the North-VNfestem region of Russia were included into the study. Mass-spectra of all the studied strains were obtained by direct profiling of cell extracts. The created main spectral profiles (MSP) of reference strains were used for identification of isolates. Evaluation of identification was carried out by calculating coefficients of matching rate of separate spectra of each isolate with MSP of all the reference strains. Results. Results of identification have shown the similarity of spectra of isolates belonging to Pomona, Icterohaemorrhagiae and Canicola serogroups, with MSP of saprophyte strain L. biflexa Patoc I. It is assumed that spectra of the studied strains contained peaks of polysaccharide O-antigens. Wherein maximum mean values of matching rate coefficients between spectra of isolates and MSP of pathogenic reference strains of leptospira correctly matched serovar type of the isolate. Conclusion. Further extended studies may form the base of development of a simple and rapid method of typing of leptospirosis causative agents on the level of serovars using MALDI-TOF mass-spectrometry.
Aim. Study immunologic phenotype of lymphocytes in the process of therapy of topic form of recombinant interferon-a2b during respiratory infections in pregnant. Materials aih. methods. 74 pregnant women from 14 weeks of gestation took part in the study, among their 55 - within 24 hours with symptoms of acute respiratory infection (ARI) of light and medium, severe course of infection, who do not need hospitalization. Group I - 34 pregnan omen with ARI receiving basic therapy with human recombinant interferon-a2b in gel form. Group 11 - 21 pregnant with ARI receiving only basic therapy. Control group had 19 pregnant omen without signs of ARI. Relative content of principle lymphocyte subpopulations was -:udied by flow cytofluorimetry: CD3+, CD3+CD4+, CD3+CD8+, CD3-CD19+, CD3-CD16+56+, CD3-CD8+; immune regulatory index was calculated in blood within 24 hours 'om the onset of the disease and 8 - 10 days later. Results. A disbalance of lymphocyte subpopulations was noted in pregnant women with light or medium severity course of acute 'espiratory infections, that was characterized by an increased content of CD3-CD16+56+ .nd CD3+CD8+, as well as a reduced content of CD3+ and CD3+CD8+. Inclusion of a :opical form of recombinant interferon-oc2b during the first days of development of the disease .as a systemic effect on cell immunity and results in normalization of subpopulation compoition of blood lymphocytes that is characteristic for physiological course of pregnancy. Conclusion. Administration of topic form of recombinant interferon in pregnant with light or medium severity of ARI can be accompanied by activation of factors of innate and adaptive immunity.
The need for efficient and cost-effective cholera vaccine hasn't lost its actuality in view of the emergence of new strains leading to severe clinical forms of cholera and capable to replace strains of the seventh.cholera pandemic, and in connection with the threat of cholera spreading beyond the borders of endemic countries. In this review data from literature sources are presented about the use of outer membrane proteins, vesicles, cell ghosts of the cholera causative agent in specific prophylaxis and diagnostics of the disease.
