MicroRNA level in patients with stable coronary artery disease with borderline coronary artery stenosis

Aim. To assess the level of microRNA (miR) -21, -22, -126, -221 in patients with coronary artery disease (CAD) with borderline coronary artery stenosis depending on comorbidities and sex.Material and methods. We examined 37 patients with class 1-3 stable CAD aged 49-59 years with borderline (40-70%) coronary artery stenosis. The relative level of miRNA was determined using real-time polymerase chain reaction. Statistical analysis was performed using the non-parametric Mann-Whitney U-test. P<0,05 were considered statistically significant. Results. The miR-221 level was higher in the group of patients with stable CAD with borderline coronary artery stenosis with a metabolically unhealthy obesity (MUO) phenotype, but without diabetes (p=0,042). The level of miR-22 and miR-126 was higher in the group of patients with stable CAD phenotype with borderline stenosis and diabetes (p=0,007 and p=0,034, respectively). The analysis of miR levels in stable CAD patients depending on sex, without taking into account the phenotype, found that miR-21 and miR-221 values were higher in men (p=0,021 and p=0,014, respectively). The study of the sex characteristics of miR content in relation to different phenotypes revealed an increase of miR22 levels in men with MUO and diabetes (p=0,048) and an increase of miR-126 levels in women with concomitant diabetes in the comparison both with patients without MUO and diabetes (p=0,018), as well as with MUO and without diabetes (p=0,007). Conclusion. The study of the miRNA level in patients with CAD with borderline coronary artery stenosis is of great interest and reflects a promising direction in diagnosis based on comorbid pathology. Keywords: miRNA, obesity phenotypes, coronary artery disease, borderline coronary artery stenosis. Relationships and Activities: none. 1Novosibirsk State Medical University, Novosibirsk; 2Federal Research Center of Fundamental and Translational Medicine, Novosibirsk; 3E.N. Meshalkin National Medical Research Center, Novosibirsk, Russia.><0,05 were considered statistically significant.Results. The miR-221 level was higher in the group of patients with stable CAD with borderline coronary artery stenosis with a metabolically unhealthy obesity (MUO) phenotype, but without diabetes (p=0,042). The level of miR-22 and miR-126 was higher in the group of patients with stable CAD phenotype with borderline stenosis and diabetes (p=0,007 and p=0,034, respectively). The analysis of miR levels in stable CAD patients depending on sex, without taking into account the phenotype, found that miR-21 and miR-221 values were higher in men (p=0,021 and p=0,014, respectively). The study of the sex characteristics of miR content in relation to different phenotypes revealed an increase of miR22 levels in men with MUO and diabetes (p=0,048) and an increase of miR-126 levels in women with concomitant diabetes in the comparison both with patients without MUO and diabetes (p=0,018), as well as with MUO and without diabetes (p=0,007).Conclusion. The study of the miRNA level in patients with CAD with borderline coronary artery stenosis is of great interest and reflects a promising direction in diagnosis based on comorbid pathology

Risk Factors of Portal Vein Thrombosis in Patients with Different Child-Pugh Classes Liver Cirrhosis

Aim: to evaluate the frequency of portal vein thrombosis (PVT) and build predictive models of the development of PVT for patients with liver cirrhosis (LC) of A and B/C classes by Child-Pugh.Materials and methods. Research design is a case-control. The Case group included 130 patients with newly diagnosed PVT not caused by invasive hepatocellular carcinoma (HCC); 29 patients were assigned to class A, 101 patients were assigned to class B/C. From the database of cirrhotic patients without PVT 60 Controls for class A and 205 for B/C were selected using sratified randomization by sex, age and etiology of cirrhosis. The Mann-Whitney U-test and Pearson's chi-squared test were used to compare the groups. Odds ratios (OR) and 95 % confidence intervals (95 % CI) were calculated. Logistic regression models are constructed with the separation of the sample into training and test (0.7; 0.3). The operational characteristics of the models were calculated on the test sample; ROC analysis was carried out, the area under the ROC curve (AUC) was calculated.Results. The overall frequency of PVT was 4.1 % (95 % CI 2.7-5.8 %) in class A and 10.4 % (95 % CI 8.5-12.5 %) class B/C. Patients with class A and B/C PVT differed from the corresponding controls by more severe portal hypertension: the frequency of bleeding / number of interventions on varices compared with the control were 41/45 % vs. 7/8 % (p < 0.001) for class A and 25.7/30.7 % vs. 16.1/16.1 % (p < 0.05) for class B/C, ascites frequency was 24 % vs. 8 % (p < 0.05) for class A and 89.1 % vs. 68.3 % (p < 0.001) for class B/C. The cutoff by the portal vein diameter was the same for both classes — 13.4 mm; the spleen length was similar and amounted 17.5 mm for class A, 17.1 mm for class B/C. Patients with PVT differed from the corresponding controls by neutrophil-to-lymphocyte ratio: class A 2.33 (1.82; 3.61) vs. 1.76 (1.37; 2.20), p < 0.01, class B/C 2.49 (1.93; 3.34) vs. 2.15 (1.49; 3.26), p < 0.05. Patients of class B/C had a higher incidence of newly diagnosed malignant tumors - 23.8% (primarily HCC that does not invade the portal vein), compared with control and cases of class A - 6.3 % and 3 % (p < 0.05), respectively. The best model for class A included variceal bleeding, ascites, portal vein diameter, absolute number of neutrophils, for class B — ascites, spleen length, portal vein diameter, malignant tumors / local factors; sensitivity, specificity, accuracy and AUC were 79.3 %, 90 %, 86.5 %, 0.897 and 73.3 %, 68.3 %, 69.9 %, 0.789, respectively.Conclusion. Independently of the Child-Pugh class of LC, the main risk factor for PVT is severe portal hypertension

CLINICAL CASE OF EXTRAUTERINE PREGNANCY, LOCATED IN RUDIMENTAL UTERINE HORN AT 21-22 WEEK OF GESTATION

In article the question is a case of extrauterine pregnancy in term of 21-22 weeks in the rudimentary horn of a uterus in term of 21-22 weeks interrupted because of break of a horn with an intrabelly bleeding. The operation and tactical approaches to conducting the given case are described

New approach for the rehabilitation of patients with chronic heart failure associated with type 2 diabetes

Rationale. Coronary artery disease (CAD) is the most common cardiovascular disease, being responsible for the largest number of deaths and disabilities. The use of lipid-lowering drugs is one of the most important aspects of pharmacological rehabilitation of patients with CAD.Objective of the work. Study the features of pharmacological rehabilitation of patients with chronic heart failure (CHF) associated with type 2 diabetes mellitus (DM) using a combination therapy of lipid-lowering Ezetimibe and Rosuvastatin. Materials and methods. 70 patients with coronary artery disease with a clinical picture of moderate CHF and concomitant type 2 diabetes were enrolled in the study. The patients enrolled in the study were recommended to change their lifestyle, including quitting smoking, increasing physical activity, and adhering to a cholesterol-free diet. After a month, the patients were divided into 2 groups of 35 people each by a simple randomization method. The comparison group (n = 35) received a combination of Rosuvastatin 20 mg/day and Ezetimibe 10 mg/day, the control group (n = 35) received only Rosuvastatin 20 mg/day. The duration of the study was 12 months. The follow-up visits were scheduled at 1, 3, 6 and 12 months after they started taking drugs.Results. At the end of the study, there were no statistically significant differences between the study groups in the number of adverse cardiovascular events (14.3% vs 20.0%, respectively, p = 0.751). There were differences in the total number of hospitalizations caused by cardiovascular diseases (14.3% vs 40%, respectively, p = 0.032).Conclusions. The prescription of combination lipidemic therapy with Rosuvastatin at a dose of 20 mg/day and Ezetimibe at a dose of 10 mg/day results in decreased hospitalizations caused by cardiovascular diseases

Features of clinical course and treatment principles of endodontic-periodontal lesions

Aim. To study the characteristic differences in the clinical course of chronic generalized periodontitis in the presence of periapical infection focus and the principles of combined treatment of endodontium and periodontium. Methods. A clinical and X-ray examination of 1525 patients of different age groups was performed. As a result, a clinical group of 68 patients with chronic generalized moderate and severe periodontitis was formed, who were divided into two groups depending on the presence or absence of periapical destruction. In group 1, 32 patients with the presence of chronic generalized periodontitis and signs of chronic apical periodontitis were united. Group 2 included 36 patients with chronic generalized periodontitis and no periapical infection and damage. The index estimation of the periodontal tissues state in the dynamics of combined endodontic and periodontal treatment was performed. Results. The initial task of treating endodontic periodontal lesions, regardless of the localization of the primary lesion focus, is the elimination or reversal of chronic periapical inflammatory processes of the teeth. The proposed monitoring system in the course of treatment and dynamic follow-up for 18 months for patients suffering from endodontic periodontal lesions using clinical and radiological methods of examination involves: (1) interim epicrisis or conclusion about negative or positive compliance 1-2 months after the completion of endodontic treatment and hygiene procedures; (2) periodontal treatment (according to indications) with the assessment of clinical efficacy 6 and 12 months after the start of treatment; (3) epicrisis after 18 months. Conclusion. The use of proposed concept of complex treatment of endodontic-periodontal lesions, monitoring system in the course of dental therapeutic and preventive measures and dynamic follow-up for 18 months allows achieving positive compliance in 85% of patients according to the clinical examination and in 80% of patients according to radiologic examination

High-Loaded Nickel Based Sol–Gel Catalysts for Methylcyclohexane Dehydrogenation

Application of liquid organic hydrogen carriers, such as “methylcyclohexane (MCH)–toluene” chemical couple, is one of the promising approaches for hydrogen storage and transportation. In the present study, copper-modified nickel catalysts with high metal loading of 75 wt% were synthesized via heterophase sol–gel technique, and investigated in the dehydrogenation of MCH. Two approaches towards the copper introduction were applied. The catalyst samples prepared via wetness impregnation of the nickel sol–gel catalyst are characterized by more effective Ni-Cu interaction compared to those where two metals were introduced simultaneously by the mixing of their solid precursors. As a result, the “impregnated” catalysts revealed higher selectivity towards toluene. The addition of copper up to 30 wt% of total metal content was shown to increase significantly toluene selectivity and yield without a noticeable decrease in MCH conversion. The catalyst with the active component including 80 wt% of Ni and 20 wt% of Cu demonstrated 96% and 89% toluene selectivity at 40% and 80% MCH conversion, respectively. Based on the obtained data, this non-noble catalytic system appears quite promising for the MCH dehydrogenation

The results of intramyocardial implantation of autologous bone marrow cells treated with erythropoietin in the surgical treatment of coronary artery disease with severe lesion of vessels

Aim. To assess safety and efficacy of intramyocardial implantation of autologous bone marrow cells treated with erythropoietin in surgery for coronary artery disease (CAD).Materials and methods. Eighty patients with CAD with diffuse and (or) distal lesions of the right coronary artery were randomly assigned to two groups: patients of group 1 (n=40) underwent coronary bypass surgery, implantation of autologous bone marrow cells treated with erythropoietin into the lower wall of the left ventricle, patients of group 2 (control group, n=40) underwent bypass surgery of the left coronary artery. Evaluation of the clinical status, perfusion and contractility of the myocardium was performed initially, 6 and 12 months after surgery.Results. Six months after the operation, we found more pronounced decrease of functional class (FC) of angina and improvement in the 6-min walk distance in the main group compared with the control group.Twelve months after surgery, the severity of angina remained at the same level in both groups. In the control group, 45,2% of patients had FC I, 52,3% of patients did not have angina. In both groups, angina return was detected in 1 patient (FC III). According to the results of two-step myocardial scintigraphy with Technetril (Tc99), 6 months after surgery, a significant improvement in myocardial perfusion was observed. In the control group, after 6 months, no significant dynamics of perfusion of the lower wall of the left ventricle was detected.Twelve months after the surgical treatment of the right coronary artery in patients from the group 1 revealed a decrease in the stress defect and the stable perfusion defect. In patients from the control only a significant stress defect was found to decrease.Conclusion. The study demonstrated decrease of FCs, significant improvement in perfusion, functional state of the myocardium and 6-min walk distance in patients of group 1

The Study in Animal Models of Local Action, Acute and Chronic Toxicity of Inactivated Influenza Vaccine Ultriks in Syringe

The evaluation of acute and chronic toxicity and local effect of the inactivated influenza vaccine Ultriks in animal models (guinea pigs, mice BALB/c) was performed. No vaccine-related toxic effect after a single intraperitoneal injection, multiple intramuscular injections, and no local irritant effect after a single intramuscular injection were reported in experimental animals

An Investigation of Possibility of Using Hydraulic Fracturing Proppants as Supports for Deep Oxidation Catalysts Employed in the Fluidized Bed

В работе рассмотрена возможность использования пропанта в качестве носителя катализаторов глубокого окисления, применяемых для проведения процессов в кипящем слое. Предложено два способа развития удельной поверхности, основанных на выщелачивании в водных растворах гидроксида натрия. Исходный и модифицированные пропанты были исследованы комплексом физико-химических методов, включая низкотемпературную адсорбцию N2, РФА, РФЭС. Медно-хромовые катализаторы на основе пропанта были получены методом пропитки по влагоемкости. Образцы катализаторов на основе пропанта и промышленные катализаторы (ЩКЗ-1, ИК-12-73, ИК-12-74А) были испытаны в процессе сжигания бурого канско-ачинского угля. Показано, что применение катализаторов на основе пропанта позволяет достичь высокой степени выгорания бурого угля (95 %), характерной для промышленных катализаторов, что значительно выше, чем при использовании инертного материала (70 %)In this work, a possibility of using hydraulic fracturing proppants (HFP) as supports for deep oxidation catalysts, employed in the fluidized bed catalytic combustion, was considered. Two methods based on leaching with alkali solution were used to increase a specific surface area of HFP. The samples were characterized by physico-chemical methods (XPS, XRD, low-temperature nitrogen adsorption). CuCrcontaining catalysts, based on HFP and obtained by the wet-impregnation method, and industrial catalysts were tested in the process of combustion brown coal in fluidized bed. It was shown that catalysts based on HFP allow us to reach a high degree of burnout (95%) which typical for industrial catalysts and higher than in the case when using an inert material (70%