BACKGROUND. Patients with type 2 diabetes mellitus (DM2) have disorders of cellular and plasma hemostasis independent of the level of glycemia, increased platelet activation, combined with microvascular angiopathy. The study of the role of genetic markers of hemostasis disorders in the formation and progression of chronic heart failure (CHF) in patients with type 2 diabetes will allow for prevention, possibly optimize treatment and improve prognosis.

AIM. To reveal polymorphisms of genes of the hemostasis system in patients with type 2 diabetes mellitus and chronic heart failure with preserved ejection fraction.

MATERIALS AND METHODS. The frequency of coagulation factor genetic polymorphisms was studied in patients with CHF-pEF and DM2 (52 people), CHF with reduced ejection fraction (CHF-rEF) and DM2 (49) and healthy volunteers (66), mean age 69.9±10.1 years old. DNA was isolated from venous blood according to the method of the manufacturer. Genetic polymorphisms were determined by real-time polymerase chain reaction.

RESULTS. The frequencies of polymorphisms rs1799963 and rs6025 of the genes of blood coagulation factors F2 (prothrombin) and F5 (factor V of blood coagulation) in all three groups were insignificant and comparable in magnitude. In patients with CHF and DM2, the frequencies of the rs6046 polymorphism of the factor F7 gene in the heterozygous form were slightly higher (by 2.6 and 1.7 times, respectively) than in the control group, but the result was not statistically significant. The CHF-pEF and CHF-rEF groups differ in the frequencies of F13 (rs5985) and fibrinogen (rs1800790) genetic polymorphisms, but are more common in patients with CHF-rEF and DM2.

CONCLUSION. Based on the results of the study, it follows that the groups of CHF-pEF and CHF-rEF differ significantly in the frequencies of polymorphisms of the studied genes, both among themselves and with the control group. The highest frequency of polymorphisms of genes, the products of which are involved in the coagulation and cellular components of hemostasis, is observed in the group of patients with DM2 and CHF-rEF.

BACKGROUND. Growth factors play a leading role in wound healing. Their deficiency in diabetic foot syndrome has been demonstrated in experimental studies, most of them performed on acute wounds. At the same time, currently the effectiveness of local therapy with growth factors of this category of patients, as well as indications and contraindications to it are contradictory and are a subject for discussion. There is no data on the content of growth factors in diabetic foot ulcers of various durations. Meanwhile, the results obtained will help to expand the understanding of the pathogenetic mechanisms of the course and outcomes of diabetic foot ulcers at different stages of healing.

AIM: To evaluate the level of growth factors and their receptors in non-healing neuropathic diabetic foot ulcers of different duration.

MATERIALS AND METHODS. 89 samples of neuropathic diabetic foot ulcers were examined. Immunohistochemical analysis of biopsies was performed using antibodies to the following growth factors and their receptors: vascular endothelial growth factor (VEGF), insulin-like growth factor (IGF), epidermal growth factor (EGF). Depending on the duration of the wound, the biopsies were divided into 3 groups: group 1 — ≤ 90 days, group 2 — 91-365 days, group 3 — > 365 days.

RESULTS. In the samples of wounds, the duration of which did not exceed 90 days, the expression of growth factors and receptors to them was significantly higher than in wounds of longer duration (p=0.0001). There was no significant difference in quantitative indicators of the expression of growth factors and their receptors between wounds lasting from 91 to 365 days and more than 365 days. According to the data of correlation analysis, the expression of VEGF, IGF, EGF and their receptors has a significant negative dependence on the duration of the wound (p= 0.0001).

CONCLUSION. In diabetic foot ulcers lasting less than 90 days, the expression of growth factors such as VEGF, IGF, EGF and their receptors is significantly higher than in wounds of longer duration. The dependence of the expression of growth factors on the duration of the ulcer was revealed. The data obtained may explain the differences in the outcomes of chronic wounds and the absence in some cases of the effect of local therapy with growth factors.

BACKGROUND: Nutrition is one of the factors affecting the health of a population. One of the nutritional components in the diet is dietary cholesterol, which comes from meat products and eggs. To date, there is no unequivocal answer about the presence of a relationship between cholesterol consumption and the risk of cardiovascular diseases, which determines the relevance of the study of this issue.

AIM: To study the association of dietary cholesterol with the risk of fatal outcomes from cardiovascular disease (CVD) in individuals with type 2 diabetes mellitus (DM2).

MATERIALS AND METHODS: The baseline study was carried out within the framework of the HAPIEE project in 2003-2005. The period of observation of the cohort, incl. for persons with DM2 lasted from 2003- 2005 to December 31, 2018 and averaged 12.8 years, the average age for both sexes was 58.1±6.6 years. Data on actual nutrition were obtained from a survey of 678 participants using a questionnaire to assess the frequency of food intake and included information on 147 products. Statistical data processing was carried out using the SPSS v.13.0 application package. To compare independent paired groups of variables, the nonparametric Mann-Whitney U test was used. The risk ratio (HR) was estimated using Cox regression. The critical level of statistical significance of differences was taken at p<0.05.

RESULTS: It was found that in individuals with DM2, the risk of a fatal outcome from CVD in the maximum tertile of dietary cholesterol intake/1000 kcal increased by 56% compared with controls (p=0.009). An analysis of the consumption of chicken eggs/1000 kcal in the diet showed an increase in the risk of death from CVD in the maximum tertile of by 52% (p=0.003). Consumption of meat products/1000 kcal was not associated with the risk of death from CVD (p = 0.361).

CONCLUSION: In the surveyed cohort of Novosibirsk residents with a history of DM2, high dietary cholesterol levels (505 mg/day in the maximum tertile) in the diet were significantly associated with an increased risk of death from CVD. The results of this study may suggest a possible association of high-cholesterol foods with an increased risk of death in people with type 2 diabetes, pointing to the need for people with diabetes to control their dietary cholesterol levels and more optimal type of diet for this population.

BACKGROUND: Value of diabetes mellitus as social and medical issue seems to be growing worldwide. High rates of concomitant cardiovascular disease represent significant problem for prognosis improvement in diabetes mellitus patients. During analysis of CARDIA-MOS study results overall mortality decrease of 38.6% was demonstrated for sodium-glucose cotransporter-2 dapagliflozin.

AIM: To analyze the number of added life years in patients receiving dapagliflozin compared to patients who did not receive hypoglycemic treatment with cardioprotective effects.

MATERIALS AND METHODS: To evaluate outcome rates in patients included in CARDIA-MOS register, two samples were formulated according to predetermined criteria: 1) patients who started dapagliflozin treatment in 2017 and received medication for 48 months; 2) control group of patients not receiving cardioprotective hypoglycemic treatment comparable to study group in key characteristics: age, duration of diabetes mellitus, presence of cardiovascular disease, use of insulin, glycated hemoglobin (HbA1c) levels.

RESULTS: Dapagliflozin increased life expectancy. Earlier prescription of treatment was associated with larger difference compared to standard therapy. For patients aged 60 years old dapagliflozin added 3.7 years of life, while in patients aged 75 years — 1.4 years. Demonstrated trend was consistent in analysis using locally weighted scatterplot smoothing.

CONCLUSION: Therefore, use of dapagliflozin in real clinical practice was associated with increase in life expectancy. Earlier start of treatment led to higher number of life years added.

The COVID-19 pandemic had a serious impact on global health and showed that the current state of most health systems in the world was not ready for such an emergency. During the pandemic, the provision of specialized planned medical care to patients with chronic diseases was suspended, and therefore telemedicine technologies for remote monitoring of patients began to be actively used in many countries of the world. In the Russian Federation, leading experts have issued organizational and methodological recommendations for the management of patients with diabetes and other chronic diseases during the COVID-19 pandemic. The measures taken by the government to provide medicines and prevent COVID-19 infection have allowed many patients with diabetes to observe a self-isolation regime. Meanwhile, there are data on the negative impact of self-isolation on the general condition of patients for various reasons: a decrease in the level of self-control and physical activity, a reduction in the volume of planned specialized medical care. Telemedicine technologies in the Russian Federation have been successfully used for remote monitoring of patients with mild and moderate severity of COVID-19. Currently, the widespread use of telemedicine and modern digital technologies, which proved their effectiveness during the pandemic in the treatment and control of diabetes, has not yet reached an optimal level. This review examines the possibilities of using telemedicine technologies for patients with diabetes, analyzes the experience of foreign countries and the Russian Federation in managing patients with diabetes during a pandemic, and analyzes the effectiveness of management measures to provide medical care to patients with diabetes.

Control of type 2 diabetes mellitus (T2DM) requires multifactorial behavioral and pharmacological treatment to prevent the development or slow the progression of complications. The main characteristics of T2DM — hyperglycemia and insulin resistance, combined with oxidative stress, low-level inflammation, epigenetic changes, genetic predisposition, activation of the renin-angiotensin-aldosterone system, causing endothelial dysfunction, are responsible for the metabolic environment that increases vascular risk in patients. Almost all patients with type 2 diabetes are at high and very high cardiovascular risk. The largest studies of the late XX-early XXI centuries. demonstrated a significant reduction in complications with intensive care early in the course of the disease and a «legacy effect» with the long-term historical value of HbA_1c control during their observational follow-ups. The decrease in HbA_1c may also play a role in mediating the positive effect on cardiovascular risk observed with the use of new hypoglycemic agents. The desire for glycemic control and the desire for organ-specific protection are not mutually exclusive, but complementary. Reassessing individual glycemic goals and achieving them at regular intervals with early intensification of therapy is key to overcoming clinical inertia.

Open source closed loop automated insulin delivery (CL-AID) systems are increasingly used in the treatment of diabetes. Assembled on a do-it-yourself (DIY) basis, these systems integrate insulin pumps, continuous glucose monitoring devices, and algorithms that control the rate of insulin delivery based on glucose levels. In this review, we consider the technological features of open source CL-AID systems (OpenAPS, AndroidAPS, Loop, etc.), advantages and barriers to their use in clinical practice. Advantages of open source CL-AID systems over commercially available ones included lower cost, a choice of devices, a wide range of user settings, as well as continuous improvement of algorithms. A growing body of evidence indicates that open source CL-AID systems, such as OpenAPS, AndroidAPS, and Loop, provide an excellent time in range with minimal risk of hypoglycaemia and increase treatment satisfaction in patients with type 1 diabetes. A wide range of settings makes open source systems an effective tool for managing diabetes in situations with rapidly changing insulin requirement. However, some technological, medical, legal and ethical issues associated with the use of non-commercial CL-AID systems still need to be addressed. Assembling the system requires skills in diabetes technology. The issue of cybersecurity is also relevant. Lack of official approvals, low awareness of medical professionals, and reimbursement issues are slowing down the introduction of the technology into clinical practice. The professional medical community at the international and national levels needs to determine its position regarding the use of open source CL-AID systems in the treatment of diabetes.

Patients with type 1 Diabetes Mellitus (T1DM) on renal replacement therapy with maintenance hemodialysis (MHD) are prone to develop hypoglycemia, as well as high glycemic variability on both dialysis and non-dialysis days. Reliability of glycated hemoglobin in dialysis patients with DM as a marker of carbohydrate metabolism compensation is reduced due to the influence of anemia, uremia, mechanical damage of erythrocytes during diffusion through the dialyzing membrane. Continuous glucose monitoring (CGM) is one of the methods for monitoring and correction glycemic variability in dialysis patients with DM.

This article presents a description of a clinical case of the patient with T1DM on MHD receiving insulin therapy using an insulin pump in combination with CGM (FreeStyle Libre portable system) and highlights the difficulties of correcting insulin therapy on dialysis and non-dialysis days.

The discussion section presents the JBDS-IP 2022 (UK) recommendations for the correction of insulin therapy in patients with DM on dialysis (it is recommended to reduce the insulin dose by 25% on dialysis days, immediately after the start of the HD procedure). Particular attention is focused on the need for a personalized approach to the correction of insulin therapy in dialysis patients with DM due to the comorbidity of this group of patients and the difficulties in extrapolating recommendations into real clinical practice.

IgG4-related disease (IgG4-RD) is characterized by the appearance of tumor-like foci in one or more organs, occurring synchronously or metachronously, due to fibro-inflammatory changes with hypersecretion of immunoglobulin G subclass 4 (IgG4) in tissues and/or blood serum. Diabetes mellitus (DM) develops among 43-68% of patients with IgG4-related pancreatitis. Diabetes against the background of IgG4-RD can be caused both by damage to the endocrine part of the pancreas and the use of glucocorticosteroids, but its course is moderate, with a rare need for insulin therapy. In both cases, the use of genetically engineered biological therapy with rituximab may be accompanied by an improvement in carbohydrate metabolism. This article describes the course of diabetes and the need for hypoglycemic therapy for 1.5 years in a patient treated with IgG4-RD.

The 20^th century was the time of large-scale discoveries and their widespread recognition. Metabolism studies and their role in living organisms deserve special attention. The chemical, physical, and biological metabolic reactions are the basis of life. Known details of these reactions are the key to understanding energy processes occurring in living organisms. Many scientists have devoted their scientific careers to the study different metabolic processes, and their most fundamental and landmark discoveries have been awarded with the Nobel Prize in Physiology or Medicine. This award, the most iconic achievement for any scientist, has been given since the beginning of the 20^th century for the most outstanding discoveries for all mankind. This review of the literature highlights the most important metabolic discoveries of the 20^th century that have played a key role in understanding how all living organisms work: the catalytic conversion of glycogen (Cori cycle), the tricarboxylic acid cycle (Krebs cycle), and cholesterol and the role of adenohypophysis hormones in glucose metabolism.