[Cardiorespiratory exercise tolerance tests: a preoperative surgical risks assessment in elderly patients].

This study focuses on the most topical issue: non-cardiac surgery safety in elderly patients. According to different authors data, the mortality rate due to cardiovascular pathology %, and postoperative cardiac events incidence -from 2 to 4.4 %.

[Functional features of microbial communities in the digestive tract of field voles (Microtus rossiaemeridionalis and clethrionomys glareolus)].

The nitrogen-fixating and cellobiohydrolase activity, the nitrogen (N) and carbon (C) contents, and the number of microorganisms in the prestomach, cecum, and colon of two vole species were studied: the southern vole (Microtus rossiaemeridionalis) and the bank vole (Clethrionomys glareolus), which is characterized by a mixed type of diet. The nitrogen-fixating activity in the cecum was found to be the highest in the voles compared with the mammals studied earlier. The seasonal dynamics of both nitrogenase and cellobiohydrolase activities was registered in the southern vole.

[Complications of mesh-vaginopexy: results of a multicenter trial].

A retrospective multicenter trial with participation of 7 large clinics of Moscow and Moscow Region has been performed to characterize complications after correction of genital prolapse with application of the PROLIFT system. The trial enrolled women with uterine and vaginal prolapse of stage II-IV by POP-Q classification. The women also had anatomic and functional defects of the adjacent organs.

[Microbiological characteristic of anthills of Lasius niger].

The characteristics of microbial communities of the anthills of Lasius niger compared to the soil beyond the area of the strong effect of ants is given.

[Methodological aspects of assessing chitin utilization by soil microorganisms].

A computational method for estimating specific activity of chitin decomposition by microorganisms is proposed. Spectrophotometric and gas chromatographic methods have been used to determine the rates of chitinase production, biomass accumulation, and carbon dioxide emission by pure cultures of microorganisms grown on a chitin-containing medium. Among dominants of the chitinolytic community of chernozem (Trichoderma viride, Stretomyces albolongus, Alcaligenes, and Arthrobacter), the highest chitinolytic activity is characteristic of prokaryotes.