The strain Streptomyces roseoflavus INA-1278 is described as a new irumamicin producer. Irumamicin 1278 is different by the antifungal activity from irumamicin produced by the world-known strain Streptomyces subflavus subsp. Irumaensis subps. nov. AM-3603.

Amidation of the end carboxyl group of eremomycin and vancomycin by pinacolinic 4- or 3-amino methyl phenyl boron acids esters in the presence of the condensing reagent PyBOP resulted in formation of novel carboxamides of the antibiotics (IIIa-VIa). After elimination of the pinacolinic group under mild hydrolysis in weak acid aqueous medium there formed the respective derivatives with a residue of the nonprotected boric acid (III-VI). It was shown that the activity of the 4-substituted derivatives of the borole-containing eremomycin and vancomycin practically was the same as that of the initial antibiotics, while higher than that of the respective 3-substituted derivatives of the borole-containing derivatives against 8 strains of grampositive bacteria.

Postexposure number of mutants (N_M) is a conventional endpoint in bacterial resistance studies using in vitro dynamic models that simulate antibiotic pharmacokinetics. To compare N_M with a recently introduced integral parameter AUBC_M, the area under the time course of resistance mutants, the enrichment of resistant Staphylococcus aureus was studied in vitro by simulation of mono-(daptomycin, doxycycline) and combined treatments (daptomycin + rifampicin, rifampicin + linezolid). Differences in the time courses of resistant S.aureus could be reflected by AUBC_M but not N_M. Moreover, unlike AUBC_M, N_M did not reflect the pronounced differences in the time courses of S.aureus mutants resistant to 2X, 4X, 8X and 16XMIC of doxycycline and rifampicin. The findings suggested that AUBC_M was a more appropriate endpoint of the amplification of resistant mutants than N_M.

Fifteen specimens of the hemoculture and 89 specimens of the broncho-alveolar lavage were used in the study. Monocultures of gramnegative bacteria resistant to cefotaxime, cefepime, imipenem and meropenem were isolated from the specimens. The PCR method with detection of the results in the real time regimen (PCR test-system Litekh) provided detection of the beta-lactamase genes: bla/_{CTX- M-like} (72/104, 69.2%), bla_NDM (6/104, 5.8%), bla_VIM (49/104, 47,1%) and bla_OXA48__like (59/104, 56.7%). There was identified correlation between the phenotype of resistance of Acinetobacter spp., Pseudomonas aeruginosa, Klebsiella pneumoniae and Escherichia coli to cefotaxime and carbopenems and detection of the bla_CTX__M__like and bla_NDM genes. At the same time, up to 70% of the K.pneumoniae isolates from the biological specimes positive with respect to the presence of the carbapenase bla_VIM and bla_OXA48-like genes demonstrated their phenotypic susceptibility to carbopenems. The results of the study confirmed the prognostic value of the genetic diagnosis for improvement of the routine bacteriological investigations.

Antibiotic susceptibility of 119 coagulase-negative staphylococci isolated at hospitals of St. Petersburg and Moscow was investigated and estimated at the local laboratories as oxacillin resistant. The following species were identified: Staphylococcus epidermidis, S.haemolyticus, S. hominis, S.capitis, S.simulans, S.pettenkoferi, S.lentus, S.carnosus and S.warneri. The oxacillin resistance was confirmed in 79.8% of the isolates. The frequency of the associated resistance to non-beta-lactams was much higher in the oxacillin resistant isolates vs. the oxacillin susceptible ones. When the CLSI and EUCAST susceptibility criteria were used, 1-3% difference in the resistance levels was recorded. Among the oxacillin resistant isolates the frequency of resistance to gentamicin, ciprofloxacin, erythromycin, moxifloxacin, tetracycline and clindamycin equaled 90, 88, 88, 63, 43 and 26% respectively. Two linezolid resistant isolates of S.epidermidis with lower susceptibility to tedizolid were isolated. Eight isolates of S.epidermidis showed lower resistance to mupirocin. The MIC of ceftarolin for oxacillin resistant coagulase-negative staphylococci varied from 0.5 to 2.0 mcg/ml, while for the oxacillin susceptible ones it was lower than 0.25 mcg/ml. No resistance to tigecyclin and vancomycin was observed.

In spite of the availability of many antituberculosis drugs all over the world the morbidity of tuberculosis does not lower. Often the tuberculosis therapy schemes are adapted to every particular patient which is mainly due to the therapy unfavourable effects requiring discontinuation of the drugs used. Polymorphism of the detoxication genes, as predictors of the response to the drug therapy, was shown to be of certain significance. The experimental data would allow to substantiate personalized management of tuberculosis patients and to increase its efficacy and safety.

The published data on the modern concept of the biological role of succinate, an intermediate of the citric acid cycle are analysed in the review. Special interest to succinate is determined by investigations on the mitochondrial functions at different pathologies, discovery of the hypoxia-inducible factor HIF-1 and studies on the human genome, that resulted in detection of the G-protein coupled receptors, which selectively are bound with succinate. According to the published experimental data, besides participation in oxidative reactions, succinate is considered as a key contributor to physiological, metabolic and genetic processes.

Surgery results of II-III stage lung cancer remain unsatisfactory and the chemotherapy does not improve the survival. The main obstacle is the use of the standard clinical parameters for the treatment strategy and not sufficiently effective selection of regimens for the chemotherapy. Monoresistance genes defining the tumor cells sensitivity to the chemotherapeutic drugs play a significant role in development of the lung tumor resistance. The review examines the mechanisms of transport, activation and targets of the chemotherapeutic drugs, identifies the key markers for predicting their effectiveness and possible use in the clinical practice. Monoresistance genes, such as ABCC5, RRM1, ERCC1, TOP1, TOP2a, TUBB3 and TYMS are characteristic of lung cancer. Clinical trials demonstrating the efficiency of their use as predictive markers for the lung cancer chemotherapy are described. A prospective study with a personalized adjuvant chemotherapy for lung cancer patients will be performed.

In connection with actuality of smallpox vaccination at present its methods and means are discussed to increase the safety of the first immunization with live vaccines.