Aim. To assess the awareness and engagement of health professionals in Russia in the main aspects of cardiovascular disease prevention.

Material and methods. In order to assess engagement and awareness, an online survey of Russian primary health care providers was conducted in March 2021. The survey was conducted using original questionnaire, which includes the main questions aimed at early identification of patients with modifiable cardiovascular risk factors.

Results. In case of newly diagnosed hypercholesterolemia and elevated blood pressure during screening, 91,8% (n=458) of the surveyed medical specialists record the results and immediately consult the patient on these issues. Similar responses was obtained by 93% (n=464) of doctors for patients with previously prescribed antihypertensive and/or lipid-lowering therapy. In addition, 46,5% (n=232) responded that during screening, 10-30% of patients had newly diagnosed hypertension and/or total cholesterol >5 mmol/L. A total of 28,9% (n=144) of respondents noted that 30-50% of patients with newly diagnosed hypertension and/or total cholesterol >5 mmol/L are detected at screening. It is noteworthy that 41,9% (n=209) of physicians devote 1 to 5 minutes to a patient, describing the changes in lifestyle, diet and physical activity. For 35,1% (n=175) of the respondents, this takes from 5 to 10 minutes, 22% (n=110) — >10 minutes, while ~5 respondents refer patients to another specialist for this purpose.

Conclusion. The survey showed a high awareness of medical specialists in the need to monitor and modify risk factors. However, ~40% of surveyed doctors do not devote enough time to explaining issues of modifying lifestyle, diet and physical activity.

Aim. According to hospital-based registry, to evaluate the age characteristics and prevalence of concomitant cardiovascular and non-сardiovascular diseases in patients hospitalized with COVID-19 during epidemic wave.

Material and methods. The TARGET-VIP register included 1130 patients aged 57,5+12,8 years (men, 51,2%) hospitalized at the Pirogov National Medical and Surgical Center from April 6, 2020 to June 22, 2020 with COVID-19. Cardiovascular diseases (CVDs) were diagnosed in 51,6% of patients, non-сardiovascular chronic diseases — in 48,6%, while CVDs and/or non-сardiovascular chronic diseases — in 65,8% of patients.

Results. The average age of patients significantly increased by an average of 0,77 years per week (p<0,001), while the difference between the 1^st week (52,8 years) and 11^th week (62,2 years) was 9,4 years; the proportion of men did not change significantly. The proportion of patients with CVDs increased significantly — from 34,2% to 66,7%, on average by 3,7% per week (p<0,001; Incidence Risk Ratio (IRR)=1,037; 95% confidence interval (CI), 1,017-1,058), with chronic non-cardiovascular diseases — from 32,5% to 43,2%, on average by 2,5% per week (p<0,001; IRR=1,025; 95% CI, 1,002-1,049), as well as those with CVDs and/or chronic non-cardiovascular diseases — from 47,5% to 75,3%, on average by 3,2% per week (p<0,001; IRR=1,032; 95% CI, 1,017-1,048). Over the entire period, the proportion of people with hypertension (HTN) was 47,0%, with coronary artery disease (CAD) — 15,4%, with heart failure (HF) — 4,0%, and with atrial fibrillation (AF) — 10,1%. The proportion of patients with HTN increased by 9,5% (p<0,001; OR=1,095; 95% CI, 1,047-1,144), with СAD — by 9,4% (p=0,01; OR=1,094; 95% CI, 1,022-1,172) and with AF — by 9,4% (p<0,001; OR=1,094; 95% CI, 1,023-1,170) per week. The proportion of patients with diabetes was 16,5%, with respiratory diseases — 11,4%, with chronic kidney disease (CKD) — 12,6%, with digestive diseases — 22,5%, with obesity — 6,1%. During the epidemic wave, the most pronounced increase in the proportion of patients with CKD was by 6,2% (p=0,036; OR=1,062; 95% CI, 1,004-1,124) and with digestive diseases — by 6,0% (p=0,01; OR=1,060; 95% CI, 1,014-1,109) per week.

Conclusion. According to the 11-week TARGET-VIP registry, the age of patients increased by 9,4 years, CVD cases — by 1,9 times (mainly HTN, CAD, AF), and chronic non­сardiovascular pathology — by 1,3 times (mainly CKD and digestive diseases). These trends in hospital practice corresponded to a weekly increase in the proportion of patients with a higher risk of fatal and non-fatal complications, which is the basis for further research in order to develop a system for a comprehensive prognostic assessment of the degree and rate of increase in the load on hospitals during COVID-19 epidemic wave.

In the context of the ongoing coronavirus disease 2019 (COVID-19) pandemic, it is extremely important to study immunogenicity and immune response duration in different vaccines.

Aim. As part of a prospective observational study, to study the levels of anti-SARS-CoV-2 S-protein IgG antibodies in individuals vaccinated with the Gam-COVID-Vac and CoviVac vaccines.

Material and methods. The data of 93 people who completed the first 3 visits were analyzed, 23 of whom were vaccinated with the Gam-COVID-Vac vaccine and 70 people — with the CoviVac vaccine. We collected blood before the injection of vaccine doses I and II, as well as 42 days after the injection of dose I in order to quantitatively determine IgG levels. The level of anti-SARS-CoV-2 S-protein IgG antibodies was determined using the SARS-CoV-2 IgG ELISA-BEST reagent kit on the InfiniteF50 TECAN system.

Results. A significant increase in anti-SARS-CoV-2 S-protein IgG antibodies was observed in those vaccinated with Gam-COVID-Vac. In the group of CoviVac vaccine, an increase in the level anti-SARS-CoV-2 S-protein IgG antibodies in absolute values was recorded, however, this increase did not reach statistical significance.

Conclusion. The data obtained show that the level of anti-SARS-CoV-2 S-protein antibodies 42 days after Gam-COVID-Vac vaccination is significantly higher than after CoviVac vaccination. However, an increase in the level of IgG in both groups indicates the ability of both vaccines to stimulate the production of anti-SARS-CoV antibodies.

Aim. To study the blood coagulation status by various laboratory methods in patients after pulmonary embolism (PE) receiving long-term anticoagulant therapy.

Material and methods. The blood of 23 patients with pulmonary embolism, who received long-term anticoagulant therapy, was studied. The study of coagulation profile, D-dimer, thrombodynamics, thromboelastography and thrombin generation test were carried out.

Results. The thrombin generation test shows a significant increase in the time of its formation, while the maximum amount of thrombin formed is half that of the reference values. There is a slightly increased median fibrin clot growth rate in the thrombodynamics test — 30,4 gm/min with a normal coagulation rate of 20-29 gm/min. The result of thromboelastography also reflects the blood hypocoagulation, in terms of R, Angle a and CI.

Conclusion. Integral methods for assessing the thrombotic readiness in combination with a routine coagulation panel demonstrate a complete picture of blood coagulation potential in patients after pulmonary embolism requiring long-term anticoagulant therapy.

Aim. To identify and characterize the associations of the presence and severity of atherosclerosis of various localization with the blood level of biochemical parameters, as well as to assess the potential of their use as markers of metabolic disorders with increased atherogenic potential.

Material and methods. The study included 216 patients (men, 53%) aged 24-87 years (mean age, 61,5±10,73 years). All patients underwent coronary angiography, carotid (CA) and femoral arterial (FA) duplex ultrasound to assess the presence and severity of atherosclerosis. In blood serum/plasma, biochemical parameters were analyzed using standard methods.

Results. Based on the analysis of circulating biomarker profile, diagnostic complexes have been established that allow assessing atherosclerosis of different localization. According to the data obtained, the determinants of coronary and CA atherosclerosis are endothelial dysfunction (concentration of nitric oxide metabolites <36,0 μmol/L) and an increased level of creatinine (≥73,0 μmol/L). The specific markers associated with severe atherosclerosis of coronary and FAs (but not CA) were low high-density lipoprotein cholesterol (≤1,0/1,2 μmol/L for male/ female, respectively) and an increased C-reactive protein level (≥1,0 mg/l). Severe peripheral atherosclerosis (CA and FA involvement) was associated with hyperglycemia (glucose ≥6,1 μmol/L), while severe FA atherosclerosis — with hyperinsulinemia (insulin ≥14,0 μU/ml).

Conclusion. The analysis of associations of circulating biochemical parameters with atherosclerosis localization and severity revealed a number of metabolic markers associated with the increased atherogenic potential. It is possible to distinguish both universal parameters that are associated with atherosclerosis, regardless of its localization and/or severity, and specific biomarkers that characterize either the localization or the severity of atherosclerosis, or both.

Aim. To study sex characteristics of cutaneous microvascular structure and function in a cohort of healthy working-age people without cardiovascular diseases.

Material and methods. The study included 35 healthy men (42±4 years) and 34 women (41 ±5 years). The cardiovascular system was assessed in all patients. The microcirculatory bed of the skin was investigated by the following non-invasive methods: 1) computerized video capillaroscopy; 2) laser Doppler flowmetry; 3) photoplethysmography.

Results. According to computerized video capillaroscopy in men, compared with women, there was a smaller number of both functioning capillaries (78 vs 86 capillaries/mm², respectively (p<0,05)) and their total number (100 vs 120 capillaries/mm², respectively (p<0,001)). Against the background of a decrease in capillary density in men, there was a higher skin interstitial hydration — 113 vs 96 gm (p<0,005) in men than in women. At the level of precapillary arterioles, where humoral tone regulation prevails. Laser Doppler flowmetry revealed lower pulse amplitude in men than in women — 0,87 vs 1,02 pf, respectively (p<0,05), which indicates a lower arterial blood inflow to exchange microvessels. Against this background, the constrictor response of precapillary arterioles to a sympathetic nervous system stimulation in men is higher than in women — 45% vs 40%, respectively (p<0,05). At the level of large arterioles, where neural tone regulation prevails, photoplethysmography revealed lower augmentation index standardized at a heart rate in men (-4,6 vs 1,7%, respectively, p<0,05), which indicates lower rigidity of muscular vessels in men.

Conclusion. In working-age healthy people, sex differences are noted at all cutaneous microvascular levels, which must be taken into account when planning studies.

The article discusses the role of sympathetic nervous system hyperactivity in the pathogenesis of various pathologies (hypertension, heart failure, atrial fibrillation, metabolic syndrome, diabetes and systemic inflammatory response syndrome). On the example of large randomized clinical trials using catheter-based radiofrequency ablation, the antihypertensive effect in patients with uncontrolled hypertension has been proven. The first experimental and clinical studies on the effectiveness of renal denervation in reducing the activity of inflammatory markers, the incidence of atrial fibrillation and ventricular arrhythmia episodes, and improving the left ventricular contractility. The first clinical results of the favorable effect of renal denervation on carbohydrate metabolism (insulin resistance and glycemic level) in patients with metabolic syndrome and diabetes have been studied in detail.

Aim. To compare the effect of beta-blocker therapy (bisoprolol and nebivolol) on the dynamics of fibrotic and vascular endothelial dysfunction markers in elderly hypertensive patients after ischemic stroke (IS).

Material and methods. This prospective cohort study included 75 hypertensive patients who were admitted to the hospital due to IS. The mean age of patients was 67±6 years. The average National Institutes of Health Stroke Scale (NIHSS) score was 7±3. The followup period was 6 months. The control group consisted of 20 elderly people with hypertension without prior myocardial infarction. The patients were divided into groups based on received therapy: group 1 (n=38) — bisoprolol; group 2 (n=37) — nebivolol. The level of matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1) was determined by enzyme-linked immunosorbent assay (ELISAKit, USA). Vascular ultrasound was carried out using a LOGIQP9 (GE) system according to the Celermajer method.

Results. After 6-month nebivolol, we revealed a decrease in the level of MMP-9 by 30,2% (p<0,01), TIMP-1 by 15,6% (p<0,05). After 6-month bisoprolol therapy, the level of MMP-9 decreased by 14,5% (p<0,05), while TIMP-1 did not change. Intergroup comparison found that when using nebivolol, there was a higher decrease in the level of MMP-9 by 15,7% (p<0,05), TIMP-1 by 9,7% (p<0,05), MMP-9/TIMP-1 by 7,8% (p<0,05) than with bisoprolol therapy. After 6-month bisoprolol therapy, there was a decrease in the proportion of patients with severe endothelial dysfunction (ED) by 7,9% (p<0,05). Two patients from the nebivolol group moved into mild ED category. The number of patients with moderate ED increased by 19% (p<0,01), while prevalence of severe ED decreased by 24,4% (p<0,01).

Conclusion. The results obtained indicate that the beta-blocker nebivolol at an average dose of 8,55+1,75 mg/day significantly reduces the vascular fibrosis, normalizes the ratio of collagen synthesis and degradation markers, improves the vasodilation brachial artery properties in comparison with bisoprolol in elderly hypertensive patients after IS.

Aim. To assess the effects of the Pharmacy Care Program on medication adherence in outpatients with stable coronary artery disease (SCAD).

Material and methods. An open randomized controlled study was conducted in primary care clinic over the period of 2019-2020. All subjects (n=126) were randomized at visit 1 into the multifaceted intervention group (n=63) or control group (n=63) and invited 12 months after to visit 2. Patients of intervention group were included into the Pharmacy Care Program, which consisted of the following components: pharmacist-led counseling, provision of education materials and 7-day pillbox, weekly SMS-reminders. Medication adherence was measured initially and at the end of the study period by means of eight-item Morisky Medication Adherence Scale (MMAS-8) and Self-Efficacy for Appropriate Medication Use Scale (SEAMS).

Results. The implementation of the Pharmacy Care Program improved medication adherence in SCAD outpatients with MMAS-8 median score of 7,0-8,0 (p<0,001) and SEAMS median score of 35,0-36,0 (p=0,017). In the control group, no changes (p=0,123) in MMAS-8 score were revealed, while SEAMS score decreased from 35,0 down to 34,5 (p=0,003). The reduction in systolic blood pressure (p=0,049) and risk of urgent hospital admission (OR=0,28; 95% CI, 0,08-0,99; p=0,041) was registered in the intervention group in contrast to the control group over the 12-month period.

Conclusion. The multicomponent intervention within the Pharmacy Care Program contributed to an increase in the adherence to pharmacotherapy of outpatients with stable CAD.

Aim. To study the prescription rate of lipid-lowering therapy and achieving the target low-density lipoprotein cholesterol (LDL-C) values in outpatients with coronary artery disease (CAD) living in Krasnoyarsk.

Material and methods. The study included all patients with CAD hospitalized in the cardiology department of the clinic of the Research Institute of Medical Problems of the North (Krasnoyarsk) in 2018-2019. The analysis included data from 1671 patients (men, 770; women, 901). During hospitalization, an in-depth survey of patients was carried out on the subject of prescribing and taking lipid-lowering drugs. On admission, lipid profile was assessed in all patients.

Results. At the time of admission, only 51,4% of patients received lipidlowering therapy. The majority received statin monotherapy (99,2%). Only 0,8% of patients received combination therapy (statin+ezetimibe). The most frequently prescribed statin in the study was atorvastatin — 74,6%. Rosuvastatin was received by 17,1% of patients. In most cases, the doses of atorvastatin and rosuvastatin corresponded to the moderate-intensity statin therapy regimen. The frequently prescribed dose of atorvastatin was 20 mg/day — 54,4%, rosuvastatin — 10 mg/day — 68,7%. The target level of LDL-C <1,8 mmol/L was reached by 16,3%, <1,5 mmol/L — by 9,0%, <1,4 mmol/L — only 6,5% of patients. Most often, the target LDL-C levels were achieved by patients receiving high-intensity statin (HIS) therapy. The target level of LDL-C <1,8 mmol/L was reached by 37,5%, <1,5 mmol/L — 23,9%, LDL cholesterol <1,4 mmol/L — 20,7% of patients, receiving HIS.

Conclusion. In patients with CAD living in Krasnoyarsk, the most commonly prescribed statins were atorvastatin and rosuvastatin, but only 32% of patients received HIS. Combination lipid-lowering therapy has been used extremely rarely. Among the surveyed patients, the current target level of LDL-C for patients with CAD (<1,4 mmol/L) was achieved only in 6,5% of patients. In the group of patients receiving high-intensity statin therapy, this target level was achieved in 20,7% of patients, which indicates the need for strict adherence to current clinical guidelines.

RuPatient health information system (HIS) is a computer program consisting of a doctor-patient web user interface, which includes algorithms for recognizing medical record text and entering it into the corresponding fields of the system.

Aim. To evaluate the effectiveness of RuPatient HIS in actual clinical practice.

Material and methods. The study involved 10 cardiologists and intensivists of the department of cardiology and сardiovascular intensive care unit of the L. A. Vorokhobov City Clinical Hospital 67 We analyzed images (scanned copies, photos) of discharge reports from patients admitted to the relevant departments in 2021. The following fields of medical documentation was recognized: Name, Complaints, Anamnesis of life and illness, Examination, Recommendations. The correctness and accuracy of recognition of entered information were analyzed. We compared the recognition quality of RuPatient HIS and a popular optical character recognition application (FineReader for Mac).

Results. The study included 77 pages of discharge reports of patients from various hospitals in Russia from 50 patients (men, 52%). The mean age of patients was 57,7±7,9 years. The number of reports with correctly recognized fields in various categories using the program algorithms was distributed as follows: Name — 14 (28%), Diagnosis — 13 (26%), Complaints — 40 (80%), Anamnesis — 14 (28%), Examination — 24 (48%), Recommendations — 46 (92%). Data that was not included in the category was also recognized and entered in the comments field. The number of recognized words was 549±174,9 vs 522,4±215,6 (p=0,5), critical errors in words — 2,1±1,6 vs 4,4±2,8 (p<0,001), non-critical errors — 10,3±4,3 vs 5,6±3,3 (p<0,001) for RuPatient HIS and optical character recognition application for a personal computer, respectively.

Conclusion. The developed RuPatient HIS, which includes a module for recognizing medical records and entering data into the corresponding fields, significantly increases the document management efficiency with high quality of optical character recognition based on neural network technologies and the automation of filling process.

Patients with clinically significant infrarenal abdominal aortic atherosclerosis are often encountered in the clinical practice of vascular and endovascular surgeons. In the absence of timely treatment, the ability to work and life quality of patients are sharply reduced, and in some cases, patients require limb amputation. Until recently, the only treatment option for such a lesion was an open surgery. However, a good skill level of endovascular surgeons and the device availability allow today to perform minimally invasive operations with comparable effectiveness and greater safety in comparison with open surgery. We present a case report of successful endovascular treatment of aortic occlusion involving the right and left common and external iliac arteries using Culotte stenting technique with further 12-month follow-up.

Cardiovascular disease remains the most relevant public health problem. Most cardiovascular diseases are associated with an atherosclerosis, the development of which is associated with inflammation and endothelial dysfunction. Melatonin is a neurohormone that is synthesized mainly in the pineal gland and plays a central role in the regulation of sleep and some other body cyclic processes. For a long time, melatonin was perceived as a substance that is effective in the treatment of circadian cycle impairments. At the same time, a large number of studies have accumulated recently that demonstrate a wider range of its biological effects, including anti-inflammatory, antioxidant, antihypertensive and, possibly, hypolipidemic. The review includes current data from experimental and clinical studies demonstrating the cardioprotective effects of melatonin in atherosclerosis, myocardial ischemia, and heart failure.

The review is devoted to selective I1-imidazoline-receptor agonists. An analysis of Russian and foreign studies is presented, the results of which indicate that this drug class not only provides adequate and long-term control of blood pressure, but also has a number of favorable metabolic effects. Therefore, it contributes to reducing insulin resistance (weight loss) and has organ protective properties (endothelial function improvement, left ventricular hypertrophy regression, microalbuminuria reduction). At the same time, selective I1-imidazoline-receptor agonists are much less likely to cause side effects characteristic of old-generation sympatholytic agents. This class of drugs is invariably included in Russian guidelines for the diagnosis and treatment of hypertension.

The growing prevalence of metabolic disorders creates an increasing demand for novel approaches to their prevention and therapy. Novel genetic diagnostic technologies are developed every year, which makes it possible to identify people who are at the highest genetic risk of diabetes, non-alcoholic fatty liver disease, and metabolic syndrome. Early intervention strategies can be used to prevent metabolic disorders in this group of people. Genetic risk scores (GRSs) are a powerful tool to identify people with a high genetic risk. Millions of genetic variants are analyzed in genome-wide association studies in order to combine them into GRSs. It has become possible to store and process such huge amounts of data with the help of biobanks, where biological samples are stored according to international standards. Genetic studies include more and more people every year that increases the predictive power of GRSs. It has already been demonstrated that the use of GRSs makes future preventive measures more effective. In the near future, GRSs are likely to become part of clinical guidelines so that they can be widely used to identify people at high risk for metabolic syndrome and its components.

Currently, a significant part of research in the fields of human and medical genetics is carried out using tissue samples, genealogical, population, medical and personal data. Their use is of particular relevance in the “genome era”, since only joint analysis of genomic data and health status of the population is crucial for understanding how genes are associated with health and disease. Genetic studies of adults without symptoms of diseases are carried out to obtain data on a possible predisposition to multifactorial diseases, to establish the carrier status of autosomal recessive mutations as part of preconception care and to assess individual sensitivity to drugs. In addition, healthy individuals can be tested to detect an inherited disease at presymptomatic stage. This situation increasingly emphasizes the importance of storing data on genome sequencing or any other patient tests for subsequent data reanalysis, as well as their safety, including biosamples from an individual and one’s family. The review article, based on international experience, summarizes guidelines for genetic testing of healthy individuals. The options for storing biological samples and related data are considered.

Osteoporosis is a chronic systemic disease of the skeleton, characterized by a decrease in bone mass and an impairment of bone microarchitecture, which can lead to a decrease in bone strength and an increase in the risk of minor trauma fractures. Osteoporosis is diagnosed on the basis of bone mineral density (BMD). BMD is characterized by high heritability that ranges according to various sources from 50 to 85%. As in the case of other complex traits, the most common approach to searching for genetic variants that affect BMD is a genome-wide association study. The lower effect size or frequency of a variant is, the larger the sample size is required to achieve statistically significant data on associations. Therefore, the studies involving hundreds of thousands of participants based on biobank data can identify the largest number of variants associated with BMD. In addition, biobank data are used in the development of genetic risk scores for osteoporosis that can be used both in combination with existing prognosis algorithms and independently of them. The aim of this review was to present the most significant studies of osteoporosis genetics, including those based on biobank data and genome-wide association studies, as well as studies on the genetic risk scores and the contribution of rare variants.

Conducting fundamental and clinical research in the field of tuberculosis is an important step towards reducing related morbidity and mortality, but access to a sufficient number of high-quality samples required for research is an unsolved problem in Russia. This review is devoted to biobanking as a key component of modern research in personalized medicine, as well as to the status and prospects for developing this area in phthisiology and infectious diseases combined with tuberculosis.

With aging, tissue homeostasis and their effective recovery after damage is violated. It has been shown that this may be due to the excessive accumulation of senescent (SC) cells in various tissues, which leads to the activation of chronic sterile inflammation, tissue dysfunction and, as a result, to the development of age-related diseases. To assess the contribution of SC cells to human body aging and pathogenesis of such diseases, relevant biomarkers are studied. For successful translation into clinical practice of approaches aimed at regulating the SC cell content in various tissues, it is necessary to study the relationship between the established clinical biomarkers of aging and age-related diseases, systemic aging parameters, and SC biomarkers at the tissue and cellular levels.

Aim. To develop and describe action algorithms for creating a biobank of samples obtained from patients aged >65 years in order to study biomarkers of SC cell accumulation.

Material and methods. To collect samples, an interaction system was built between several research, clinical and infrastructure departments of a multidisciplinary medical center. At the stage of preanalytical training, regulatory legal acts were developed, including informed consent for patients, as well as protocols for each stage of the study.

Results. A roadmap was formed with action algorithms for all participants in the study, as well as with a convenient and accessible system of annotations and storage of biological samples. To date, the collection includes biological samples of 7 different types (peripheral blood serum, formalin-fixed tissue samples and formalin fixed paraffin embedded tissue specimens, samples of different cells isolated from peripheral blood, skin and adipose tissue, samples of deoxyribonucleic and ribonucleic acids, cell secretome conditioned media) obtained from 82 patients. We accumulated relevant anamnestic, clinical and laboratory data, as well as the results of experimental studies to assess the SC cell biomarkers. Using the collection, the relationship between clinical, tissue and cellular biomarkers of SC cell accumulation was studied.

Conclusion. The creation of a collection of biological samples at the molecular, cellular, tissue and organism levels from one patient provides great opportunities for research in the field of personalized medicine and the study of age-related disease pathogenesis.

Aim. To analyze the structure of clinical data, as well as the principles of collecting and storing related data of the biobank of the National Medical Research Center for Therapy and Preventive Medicine (hereinafter Biobank).

Material and methods. The analysis was carried out using the documentation available in the Biobank, as well as the databases used in its work. The paper presents clinical data on biosamples available in the Biobank as of August 18, 2021.

Results. At the time of analysis, the Biobank had 373547 samples collected from 54192 patients within 37 research projects. The article presents the analysis of data representation and quantitative assessment of the presence/absence of common diagnoses in clinical projects. Approaches to documenting clinical information associated with biological samples stored in the Biobank were assessed. The methods and tools used for standardization and automation of processes used in the Biobank were substantiated.

Conclusion. The Biobank of the National Medical Research Center for Therapy and Preventive Medicine is the largest research biobank in Russia, which meets all modern international requirements and is one of the key structures that improve the research quality and intensify their conduct both within the one center and in cooperation with other biobanks and scientific institutions. The collection and systematic storage of clinical abstracts of biological samples is an integral and most important part of the Biobank’s work.

Biobanking is one of the most important elements of the modern infrastructure for biomedical research. Organization of a biobank on the basis of the N. P. Bochkov Medical Genetics Research Center provides a centralized infrastructure for preparing biomaterial for research. Biobank has the format of a research equipment sharing center and works with two types of unique biomaterials from patients with genetic diseases: blood/blood components and vital cells of various tissue origin. The storage facility of the Biobank is equipped with low-temperature (-80° C) and cryostorage (-196° C) systems. Identification and search of samples is carried out using a bar-coding system and is implemented through the information interface of the biobank, which is integrated into the general database of patients at the Medical Genetics Research Center. Information on biomaterial samples is presented in periodically updated catalogs on the page of equipment sharing center “Biobank”. Biobank collection is available to internal and external users.

Aim. To create a collection of samples of blood components of patients with multiple myeloma for potential fundamental and applied biomedical research.

Material and methods. The material was collected according to the developed algorithm, including the collection of clinical information, biological material, sample preparation, quality control and storage in the biobank of the National Medical Research Center of Oncology.

Results. As of August 2021, the cryostorage of the National Medical Research Center of Oncology biobank contains a collection of 175 samples of blood serum, plasma and mononuclear cell fraction of patients with multiple myeloma. Samples were obtained from 32 patients of both sexes, the mean age of which was 59,5±1,65 years. To create an electronic catalog, personal, clinical and laboratory data about patients were collected, after which each sample was assigned its own unique identification number. Written informed consent was obtained from all patients for the storage of their biomaterial in a biobank with possible subsequent use for scientific purposes. Freezing of the obtained samples was carried out in accordance with low-temperature storage protocol. The electronic catalog contains a wide range of systematized clinical and laboratory information on samples.

Conclusion. The collection of multiple myeloma samples is a unique resource for potential research on its pathophysiology, the development of diagnostic biomarkers, and the search for targeted agents.

The main condition for ensuring effective sampling for creating a bioresource collection is quality management, which implies careful planning and predicting errors at all stages. Risk management of samples and data loss is ensured by correct logistics, circumspect algorithms and standardization of processes. Features of the logistic processes for creating biosample collection from the pregnant women are described in this article.

Aim. To optimize the technique for the isolation and storage of ribonucleic acid (RNA) from whole blood and leukocyte fraction.

Materials and methods. Comparison of isolation quality was carried out for RNA samples obtained from 228 leukocyte samples and 198 whole blood samples. Isolation was performed from fresh and frozen samples using ExtractRNA™ reagent and a MagNA Pure Compact automated system. Various methods of removing erythrocytes (centrifugation and treatment with hemolytic agents from two manufacturers) were tested, as well as freezing with and without preservatives for subsequent RNA isolation.

Results. Twenty-one combinations of conditions were tested. The highest quality RNA was isolated by manual extraction using the ExtractRNA™ reagent from a fresh leukocyte fraction, purified by the Amplisens hemolytic agent (successful extraction — 94%, median RIN=8,4); frozen in IntactRNA™, purified by leukocyte fraction centrifugation (successful extraction — 100%, median RIN=8); frozen in ExtractRNA™, purified by leukocyte fraction centrifugation (successful extraction — 100%, median RIN=9,3).

Conclusion. RNA can be isolated from frozen blood fractions, which is not inferior in quality to that isolated from fresh samples. Thus, it is not necessary to isolate RNA immediately after the receipt of biological material.

The search for early disease markers and the development of diagnostic systems has recently been expanding within genomics. Genomic deoxyribonucleic acid (DNA), cell-free DNA (cfDNA) and microbiome DNA obtained from different types of samples (tissues, blood and its derivatives, feces, etc.) are used as objects of genetic research. It has been shown that cfDNA that enters the bloodstream, in particular, as a result of apoptosis, necrosis, active tumor secretion and metastasis, is of great importance for studying molecular mechanisms of the pathological process and application in clinical practice. Circulating nucleic acid analysis can be used to monitor response to treatment, assess drug resistance, and quantify minimal residual disease. The review article reflects the following information about the biomaterial: source of cfDNA, methods of cfDNA isolation, storage and use for the diagnosis of certain diseases. Cell-free DNA can be present in biological fluids such as blood, urine, saliva, synovial and cerebrospinal fluid. In most cases, cfDNA is isolated from blood derivatives (serum and plasma), while it is most correct to use blood plasma for cfDNA isolation. Optimal and economically justifiable is the use of ethylenediaminetetra-acetic acid tubes for taking blood and obtaining plasma with subsequent cfDNA isolation. There is evidence that the optimal shelf life in an ethylenediaminetetra-acetic acid tube from the moment of blood sampling to subsequent isolation is a 2-hour interval. After centrifugation, cfDNA in plasma (or serum) can be stored for a long time at a temperature of -80O C. Storage at -20O C is undesirable, since DNA fragmentation increases.

Guidelines were approved at the meeting of the academic council of the National Medical Research Center for Therapy and Preventive Medicine, Moscow (Protocol No. 10 of 19.10.2021).

The aim of these guidelines is to provide primary care physicians with scientifically based algorithms for the implementation of dispensary monitoring in patients with chronic non-communicable diseases in the conditions of the new coronavirus infection (COVID-19) pandemic, including the use of telemedicine technologies.

The organization and conduct of high-quality medical follow-up are the most important tasks aimed at both reducing the risks of developing complications of chronic non-communicable diseases and reducing overall mortality, especially in the current conditions of the COVID-19 pandemic. The guidelines contain clinical aspects of dispensary follow-up, general principles of tactics for managing patients with various chronic non-communicable diseases in COVID-19 conditions, in addition, brief checklists with options for interviewing patients with various chronic non-communicable diseases are presented, topical aspects of the interaction of drugs used in the treatment of chronic non-communicable diseases with antiviral drugs are considered.

The guidelines are intended for general practitioners, district therapists, general practitioners (family doctors), as well as doctors of other specialties providing primary health care.