[The impact of BMI on the course of the acute SARS-COV-2 infection and the risks that emerge during the first year after the hospital discharge. Subanalysis evidence of the AKTIV and AKTIV 2 registries].

Background: There is enough evidence of the negative impact of excess weight on the formation and progression of res piratory pathology. Given the continuing SARS-CoV-2 pandemic, it is relevant to determine the relationship between body mass index (BMI) and the clinical features of the novel coronavirus infection (NCI).

Aim: To study the effect of BMI on the course of the acute SARS-COV-2 infection and the post-covid period.

[ACTIV SARS-CoV-2 registry (Analysis of Chronic Non-infectious Diseases Dynamics After COVID-19 Infection in Adult Patients). Assessment of impact of combined original comorbid diseases in patients with COVID-19 on the prognosis].

Aim: Study the impact of various combinations of comorbid original diseases in patients infected with COVID-19 later on the disease progression and outcomes of the new coronavirus infection.

Materials And Methods: The ACTIV registry was created on the Eurasian Association of Therapists initiative. 5,808 patients have been included in the registry: men and women with COVID-19 treated at hospital or at home.

Analysis of influence of background therapy for comorbidities in the period before infection on the risk of the lethal COVID outcome. Data from the international ACTIV SARS-CoV-2 registry («Analysis of chronic non-infectious diseases dynamics after COVID-19 infection in adult patients SARS-CoV-2»).

Aim      To study the effect of regular drug therapy for cardiovascular and other diseases preceding the COVID-19 infection on severity and outcome of COVID-19 based on data of the ACTIVE (Analysis of dynamics of Comorbidities in paTIents who surVived SARS-CoV-2 infEction) registry.Material and methods  The ACTIVE registry was created at the initiative of the Eurasian Association of Therapists. The registry includes 5 808 male and female patients diagnosed with COVID-19 treated in a hospital or at home with a due protection of patients' privacy (data of nasal and throat smears; antibody titer; typical CT imaging features).

[Antibiotic-resistant enterobacteria in sewage and the water of surface reservoirs].

The literature review is concerned with the distribution of antibiotic-resistant enterobacteria in sewage and surface ponds. The analysis of the published data provided the conclusion that antibiotic resistant representatives of the family Enterobacteriaceae are widely distributed in water object of the environment that could be hazardous for men. Of special attention should be the fact of the R(+)-coliform bacteria distribution which is the general index of the fecal pollution.

[Opportunistic bacteria in the seawater of recreational areas].

In the coastal water of several seas lying in different climatic zones the content of such opportunistic bacteria as Klebsiella and Pseudomonas aeruginosa was determined. Correlative relationships between Klebsiella, P. aeruginosa, lactose-positive Escherichia coli, fecal E.

[Sanitary and microbiological control of ocean water in biological pollution].

Problems of coastal waters sanitary and bacteriologic inspection are discussed. Lactose positive E. coli and Enterococcus indexes as key, and Pseudomonas aeruginosa index as a supplementary one are suggested.

[Antibiotic-resistant Klebsiella from coastal waters of the Caspian and Baltic seas].

Antibiotic resistant Klebsiella spp. were found to be widely distributed in coastal waters of seas to which sewage was discharged: 69.9 and 85.

[Testing the homozygosity of Baikal seal using data on genetic variability of proteins].

Interspecies genetic variability of Baikal seal was studied for 22 proteins encoded by 24 loci. Genetic variants have been detected in transferrin (TfA = 0.96; TfB = 0.

[The acid-base status and blood indices in rats following hyperbaric oxygenation].

Acid-base equilibrium, glycolytic parameters, electrophoretic mobility and hemoglobin oxygen affinity in blood of rats exposed to hyperbaric oxygenation were measured. The animals were kept at 2026 kPa for 15, 30 or 60 min. It was found that the short-term oxygenation led to changes in acid-base equilibrium, then to biochemical changes in plasma and erythrocytes and, consequently, to a higher oxygen-binding ability of hemoglobin.

[Reptiles, the chief reservoir of Edwardsiella in nature].

The study of reptiles in the zoo has revealed the high level of Edwardsiella contamination in crocodiles (43%), snakes (36.4%), tortoises (23.6%) and, to a lesser extent, lizards (17.

[Hemoglobin oxygen affinity in Mesocricetus auratus hamsters of different ages].

Studies have been made on the amino acid composition of electrophoretically homogeneous albumin and its main isoelectrically homogeneous fraction in two strains of hens and their hybrid. Serum albumin of hen and hybrid is characterized by higher total content of Asp and Glu residues as compared with that of the cock (137, 121, and 116 respectively) and lower content of Lys (59 against 66). The acidity of albumin increases in the line cock-hen-hybrid.

[Multinucleated erythroid cells in blood of golden hamster embryos].

Blood smears of 11 and 13-day-old embryos (20) and newborns (10) of golden hamsters were analysed. The smears were stained with brilliant cresyl blue in a moist chamber for 5--7 min. About 2--6 thousand cells were counted in 200 visual fields.