Patients With Non-Obstructive Coronary Artery Disease and Polyvascular Disease. Sub-Analysis of the Real-World Registry KAMMA (Clinical Registry on Patient Population With Polyvascular Disease in the Russian Federation and Eurasian Countries).

AIM: To study the clinical status and data of laboratory and instrumental examination of patients with non-obstructive ischemic heart disease (IHD) and multifocal atherosclerosis (MFA) included in the KAMMA registry. MATERIAL AND METHODS: The subanalysis included 1,893 IHD patients who underwent coronary angiography (CAG) and ultrasonic examination of peripheral arteries. Based on the CAG data, patients were divided into two groups: group 1, patients with obstructive coronary atherosclerosis (CA) (maximum stenosis ≥50% and/or history of percutaneous coronary intervention/coronary artery bypass grafting, n=1728; 91.3%) and group 2, patients with non-obstructive CA (maximum stenosis <50%, n = 165; 8.7%). RESULTS: A comparative analysis based on the degree of coronary obstruction in patients with verified IHD who were included in the KAMMA registry showed that 8.7% of them had coronary artery stenosis of less than 50%. The overwhelming majority of patients with non-obstructive CA had MFA affecting the brachiocephalic arteries in 94.3% and the lower extremity arteries in 40.2%. Among patients with non-obstructive IHD, women predominated; risk factors such as smoking and type 2 diabetes mellitus were less frequent in this group than in the obstructive IHD group. Patients with non-obstructive CA more frequently had a history of dyslipidemia; they had higher total cholesterol and non-high-density lipoprotein cholesterol; and they more frequently received moderate-intensity statin therapy than patients with obstructive CA (55.8% vs. 34.5%). Characteristic features of patients with non-obstructive CA were less severe IHD and less frequent history of acute coronary syndrome. However, the incidence of stroke, peripheral arterial thrombosis, and chronic arterial insufficiency of the lower extremities did not differ in groups 1 and 2, whereas the incidence of paroxysmal atrial fibrillation was higher in the non-obstructive IHD group. CONCLUSION: IHD patients without coronary obstruction also require assessment of the peripheral arterial status, as they may have advanced MFA, which should be taken into account when choosing the "aggressiveness" of therapy.

[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. CLINICALTRIALS: gov ID NCT04492384. RESULTS: Most patients with COVID-19 have original comorbid diseases (oCDs). Polymorbidity assessed by way of simple counting of oCDs is an independent factor in negative outcomes of COVID-19. Search for most frequent combinations of 2, 3 and 4 oCDs has revealed absolute domination of cardiovascular diseases (all possible variants). The most unfavorable combination of 2 oCDs includes atrial hypertension (AH) and chronic heart failure (CHF). The most unfavorable combination of 3 oCDs includes AH, coronary heart disease (CHD) and CHF; the worst combination of 4 oCDs includes AH, CHD, CHF and diabetes mellitus. Such combinations increased the risk of lethal outcomes 3.963, 4.082 and 4.215 times respectively. CONCLUSION: Polymorbidity determined by way of simple counting of diseases may be estimated as a factor in the lethal outcome risk in the acute phase of COVID-19 in real practice. Most frequent combinations of 2, 3 and 4 diseases in patients with COVID-19 primarily include cardiovascular diseases (AH, CHD and CHF), diabetes mellitus and obesity. Combinations of such diseases increase the COVID-19 lethal outcome risk.

[Possibilities and limitations of the use of beta-blockers in patients with cardiovascular disease and chronic obstructive pulmonary disease].

In medical literature, increasing attention is paid to comorbidities in patients with chronic obstructive pulmonary disease (COPD). In clinical practice, physicians often hesitate to prescribe beta-blockers (ß1-adrenoblockers) to COPD patients. This article summarized new results of using beta-blockers in patients with COPD. According to reports, the selective ß1-blocker treatment considerably increases the survival rate of patients with COPD and ischemic heart disease, particularly after myocardial infarction (MI), and with chronic heart failure (CHF). The benefit of administering selective ß1-blockers to patients with CHF and/or a history of MI overweighs a potential risk related with the treatment even in patients with severe COPD. Convincing data in favor of the ß1-blocker treatment in COPD patients without the above-mentioned comorbidities are not available. At present, the selective ß1-blocker treatment is considered safe for patients with cardiovascular diseases and COPD. For this reason, selective ß1-blockers, such as bisoprolol, metoprolol or nebivolol can be used in managing this patient cohort. Nonselective ß1-blockers may induce bronchospasm and are not recommended for COPD patients. For the treatment with ß-blockers with intrinsic sympathomimetic activity, the probability of bronchial obstruction in COPD patients is lower; however, drugs of this pharmaceutical group have not been compared with cardioselective beta-blockers. For safety reasons, the beta-blocker treatment should be started outside exacerbation of COPD and from a small dose. Careful monitoring is recommended for possible new symptoms, such as emergence/increase of shortness of breath, cough or changes in dosing of other drugs (for example, increased frequency of using short-acting bronchodilators).

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-2¼).

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). The register territory included 7 countries: the Russian Federation, the Republic of Armenia, the Republic of Belarus, the Republic of Kazakhstan, the Kyrgyz Republic, the Republic of Moldova, and the Republic of Uzbekistan. The registry design: a closed, multicenter registry with two nonoverlapping arms (outpatient arm and in-patient arm). The registry scheduled 6 visits, 3 in-person visits during the acute period and 3 virtual visits (telephone calls) at 3, 6, and 12 mos. Patient enrollment started on June 29, 2020 and was completed on October 29, 2020. The registry completion is scheduled for October 29, 2022. The registry ID: ClinicalTrials.gov: NCT04492384. In this fragment of the study of registry data, the work group analyzed the effect of therapy for comorbidities at baseline on severity and outcomes of the novel coronavirus infection. The study population included only the patients who took their medicines on a regular basis while the comparison population consisted of noncompliant patients (irregular drug intake or not taking drugs at all despite indications for the treatment).Results The analysis of the ACTIVE registry database included 5808 patients. The vast majority of patients with COVID-19 had comorbidities with prevalence of cardiovascular diseases. Medicines used for the treatment of COVID-19 comorbidities influenced the course of the infectious disease in different ways. A lower risk of fatal outcome was associated with the statin treatment in patients with ischemic heart disease (IHD); with angiotensin-converting enzyme inhibitors (ACEI)/angiotensin receptor antagonists and with beta-blockers in patients with IHD, arterial hypertension, chronic heart failure (CHF), and atrial fibrillation; with oral anticoagulants (OAC), primarily direct OAC, clopidogrel/prasugrel/ticagrelor in patients with IHD; with oral antihyperglycemic therapy in patients with type 2 diabetes mellitus (DM); and with long-acting insulins in patients with type 1 DM. A higher risk of fatal outcome was associated with the spironolactone treatment in patients with CHF and with inhaled corticosteroids (iCS) in patients with chronic obstructive pulmonary disease (COPD).Conclusion      In the epoch of COVID-19 pandemic, a lower risk of severe course of the coronavirus infection was observed for patients with chronic noninfectious comorbidities highly compliant with the base treatment of the comorbidity.

[International register "Analysis of Chronic Non-infectious Diseases Dynamics After COVID-19 Infection in Adult Patients (ACTIV SARS-CoV-2)"].

.

[Soluble transferrin receptors and ferritin index in the diagnosis of iron deficiency in patients with spondyloarthritis and anemia].

AIM: To assess the diagnostic value of the detection of soluble transferrin receptors (sTfR) and ferritin index (sTfR/log Fer) in patients with spondyloarthritis (SpA) and anemia for the revealing absolute iron deficiency (ID). MATERIALS AND METHODS: The study included 68 patients with SpA: median age 39 [34; 47] years, men: 38 (55.9%). Hemogram, C-reactive protein levels and ferrokinetics parameters were assessed, including sTfR testing by the method of quantitative enzyme-linked immunosorbent assay (Monobind Inc., USA). We also calculated sTfR/log Fer. Based on ferrokinetics parameters and C-reactive protein levels, chronic disease anemia (CDA), iron deficiency anemia (IDA), or their combination (CDA/IDA) were diagnosed. RESULTS: CDA was diagnosed in 16 patients, CDA/IDA in 32 patients, and 20 patients had no anemia. An increase in sTfR concentration in patients with CDA/IDA (1.7 [1.4; 2.2] mg/L) compared with patients with CDA (1.5 [1.1; 1.7] mg/L, p0.05) was revealed. sTfR/log Fer in patients with CDA/IDA (0.93 [0.82; 1.24]) was higher than in patients with CDA (0.64 [0.48; 0.75], p0.0001). When evaluating the ROC curves, it was found that sTfR levels 1.39 mg/L and sTfR/log Fer levels 0.83 indicate the presence of absolute ID. The area under the ROC curve for sTfR was 0.72 (95% confidence interval 0.600.82, p0.001), for sTfR/log Fer 0.85 (95% confidence interval 0.740.92, p0.001). The sensitivity and specificity of sTfR/log Fer (75 and 83%, respectively) were higher compared with sTfR (53 and 81%, respectively). CONCLUSION: In patients with SpA having CDA/IDA, sTfR and sTfR/log Fer are statistically significantly increased. The results obtained indicate the possibility of diagnosing ID by using these parameters.

[Is the N-terminal pro-B-type natriuretic peptide a predictor of cardiovascular events in hemodialysis patients?]

Aim To evaluate the role of N-terminal pro-hormone brain natriuretic peptide (NT-proBNP) as a predictor of cardiovascular events (CVE) in patients receiving programmed hemodialysis (PHD).Material and methods This study included 74 patients (men, 64.8 %) older than 18 years receiving PHD. Data were processed using mean values of standard biochemical indexes for 16 months. NT-proBNP level was measured and transthoracic echocardiography (EchoCG) and bioimpedancemetry were performed at the time of inclusion into the study. Cumulative incidence of CVE for 16 months was evaluated in patients with different levels of NT-proBNP (quartile 1: <1127 pg/ml; quartile 1-4: 1127-3210 pg/ml; quartile 4: >3210 pg/ml) using the Kaplan-Meier method. For assessment of NT-proBNP as a CVE predictor, receiver operational characteristic curves (ROC curves) were constructed.Results The serum concentration of NT-proBNP was 2114.5 [1127; 3210.4] pg/ml. During 16 months, CVE were observed in 25.6 % of patients. The risk of CVE increased with increasing NT-proBNP quartile in the analysis of Kaplan-Meier curves (Log-Rank test, p=0.032). In this process, CVE did not develop in patients with NT-proBNP concentrations lower than 1127 pg/ml. The ROC analysis demonstrated a good predictive value of NT-proBNP (p=0.006, AUC 0.71, 95 % CI: 0.59-0.83). The optimum cut-off threshold of the NT-proBNP level predictive of CVE was 2093 pg/ml (sensitivity, 84.2 %, specificity, 58.2 %). CVE developed in patients with greater values of volumetric myocardial parameters, indirect signs of hyperhydration (higher predialysis sodium level and pulmonary artery systolic pressure), smaller volumes of substituate per dialysis procedure, and left ventricular systolic dysfunction (p<0.05).Conclusion In patients receiving programmed extracorporeal therapy, the serum concentration of NT-proBNP was considerably higher than mean values in the general population. Apparently, serum NT-proBNP concentrations in the range of 1127-2093 pg/ml can be used as a predictor for a high risk of CVE in the dialysis population. Pronounced structural alterations of the myocardium, left ventricular systolic dysfunction, and hyperhydration are the factors that provide development of CVE on PHD. Large volumes of the PHD substitution solution are associated with a lower incidence of CVE in the dialysis population.

[The Agreed Experts' Position of the Eurasian Association of Therapists on Some new Mechanisms of COVID-19 Pathways: Focus on Hemostasis, Hemotransfusion Issues and Blood gas Exchange].

The article discusses pathogenesis and treatment of COVID-19. The authors presented state-of-the-art insight into hemostatic disorders in patients with COVID-19 and clinical recommendations on prevention of thrombosis and thromboembolism in patients infected with SARS-CoV-2. The article discussed in detail a new hypothesis proposed by Chinese physicians about a new component in the pathogenesis of COVID-19, namely, about the effect of SARS-CoV-2 virus on the hemoglobin beta-chain and the formation of a complex with porphyrin, which results in displacement of the iron ion. Thus, hemoglobin loses the capability for transporting oxygen, which aggravates hypoxia and worsens the prognosis. The article stated rules of hemotransfusion safety in the conditions of COVID-19 pandemic.

[Use of Statins, Anticoagulants, Antiaggregants and Antiarrhythmic Drugs in Patients With COVID-19. The Agreed Experts' Position of Russian Society of Cardiology, Eurasian Association of Therapists, National Society on Atherothrombosis, Societies of Experts in Urgent Cardiology, Eurasian Arrhythmology Association].

This article discusses relevant aspects in the treatment of patients with COVID-19. Up-to-date information about principles for administration of statins, antithrombotics, and antiarrhythmics is presented. The authors addressed in detail specific features of reversing heart rhythm disorders in patients with coronavirus infection and the interaction of antiarrhythmic and antiviral drugs. Recommendations are provided for outpatient and inpatient antithrombotic therapy for patients with COVID-19. Issues of antithrombotic and antiviral drug interaction are discussed.

[Clinical and diagnostical value of 24-hour arterial stiffness monitoring in patients with bronchial asthma].

AIM: To evaluate 24-hour dynamics of the arterial stiffness main indicators in patients with bronchial asthma of various severity and control. MATERIALS AND METHODS: The study included 119 patients with bronchial asthma, who formed main groups: the first group 48 patients with mild and moderate asthma, the second 71 patients with severe asthma. All patients underwent the vascular stiffness parameters study using a multifunctional complex for the 24-hour monitoring and office measurements of blood pressure and vessels condition. At the same time vascular stiffness indicators were examined: PWVao pulse wave velocity in the aorta (m/s); Aix augmentation index (%); ASI the arterial stiffness index (mmHg). RESULTS: When comparing the 24-hour arterial stiffness dynamics indicators, changes were found in patients with severe asthma and non-control. Thus, a statistically significant increase in the pulse wave velocity in the aorta and augmentation index in second group compared to patients of the 1st group and control subjects. In patients with severe asthma Aix at night is significantly higher than daytime, which indicates an increase in arterial stiffness at night. CONCLUSIONS: Patients with severe bronchial asthma have increased arterial stiffness in comparison with controls and mild and moderate asthma. Also, in patients with severe asthma arterial stiffness parameters were higher at night-time in comparison with daytime.

[The agreed experts' position of the Eurasian Association of Therapists on tactics of management of patients with comorbid pathology infected with SARS-Cov-2].

The agreement of experts of the Eurasian Association of Therapists (EAT) discusses pathogenesis and treatment of COVID-19. Modern data on the characteristics of cardiovascular, kidney, respiratory damage in SARS-infected CoV-2 are presented. The tactics of managing patients initially having cardiovascular diseases, diabetes mellitus, chronic obstructive pulmonary disease, bronchial asthma, chronic kidney disease are discussed in detail. The article presents data on drug interaction of drugs.

Features of the clinic and diagnosis of chronic heart failure in patients with chronic obstructive pulmonary disease.

AIM: To elucidate clinical and diagnostic features of chronic heart failure (CHF) in patients with chronic obstructive pulmonary disease (COPD). MATERIALS AND METHODS: The study included 239 patients with COPD and 42 patients with CHF without COPD. The first subgroup consisted of 60 patients with a history of myocardial infarction (MI) and the second subgroup consisted of 79 patients without a history of MI. A general clinical examination, EchoCG, measurements of N-terminal pro B-type natriuretic peptide (NT-proBNP), galectin 3, and high-sensitivity C-reactive protein (hsCRP) were performed for all patients. RESULTS: The risk group for excluding HF as a cause of progressive dyspnea in COPD patients consisted of patients with the bronchitic phenotype who belonged to GOLD groups C and D with frequent exacerbations, increased hsCRP, reduced oxygen saturation, and impaired exercise tolerance. Patients with a history of MI constituted a special group of risk. Measuring specific biomarkers, primarily BNP or NT-proBNP, is recommended to confirm the presence/absence of CHF and to evaluate CHF severity in patients with these risk factors. CONCLUSION: A combination of COPD and CHF produces a number of clinical and, specifically, diagnostic problems, which have not been completely solved so far.

Endothelial dysfunction in patients with chronic obstructive pulmonary disease in combination with coronary heart disease.

AIM: The aim of this study was to evaluate the state of the vascular wall in patients with chronic obstructive pulmonary disease (COPD) combined with chronic coronary artery disease (CAD). MATERIALS AND METHODS: The study included 108 patients: 37 patients with COPD and CAD and 71 patients with COPD without CAD. Endothelial function was studied in tests with reactive hyperemia and nitroglycerin. The number of blood plasma desquamated endotheliocytes were determined by the Hladovec method. In patients with COPD identified are signs of vascular wall remodeling: thickening wall of the brachial artery, reduction of the flow-mediated vasodilation. Patients with COPD in combination with CHD demonstrated higher impairments of the vasoregulatory dysfunction of endothelial of the vascular wall. CONCLUSION: In patients with COPD combined with chronic coronary heart disease more pronounced endothelial dysfunction with disturbance of endothelium-dependent vasomotor reactions.

[Spondyloarthritis: modern terminology and definitions].

Aim to identify outdated terms and make changes to the terminology of spondyloarthritis. MATERIALS AND METHODS: At the first stage of the work, the terms divided into two categories: "outdated" definitions and terms that need to be improved or unified. Subsequently, each member of the Expert Group of Spondyloarthritis at the Association of Rheumatologists of Russia (ExSpA) presented by its own definition of the designated term or agreed with the previous term. At the next stage, the existing definitions were put together. After discussion, experts left a term that scored at least 2/3 of the votes. The special opinion of experts was recorded, whose did not coincide with the majority opinion. An open vote was conducted, when defining an "outdated" term with the unanimous decision of all group members, this term was not recommended for further clinical use. RESULTS: The work carried out allowed us to identify a number of terms that are not recommended for use in clinical practice. Number of terms are defined, which should be used when discussing the problem of spondyloarthritis. CONCLUSION: The Expert Group of Spondyloarthritis at the Association of Rheumatologists of Russia suggests using or, accordingly, not using a number of terms and their definitions in clinical practice.

[Structural and functional changes of blood vessels in women in early postmenopause, the possibility of correction of the revealed violations].

AIM: To evaluate severity and pattern of structural and functional changes of vascular wall in early postmenopausal women receiving chronic treatment with a low-dose combination of 17ß-estradiol (E2) 1 mg and drospirenone 2 mg (DRSP). Evaluation of structural and functional arterial remodeling might be important for assessment of cardiovascular risk in postmenopausal women. MATERIALS AND METHODS: The study included 162 early postmenopausal women with postmenopausal syndrome. The women were divided into two groups. The main group consisted of 84 patients receiving the postmenopausal hormonal therapy (PMHT) with E2 1 mg / DRSP 2 mg (Angeliq, Bayer) and the control group included 78 women not receiving PMHT. The follow-up duration was 5.2 years. 24­h blood pressure monitoring with evaluation of arterial stiffness (RWTT, AIx, ASI, AASI, (dP/dt) max) was performed. Endothelium-dependent dilation of the brachial artery was measured using the reactive hyperemia test. Aortic pulse wave velocity (aPWV) and common carotid intima-media thickness (ccIMT) were measured ultrasonically. RESULTS: At baseline, increased aPWV was observed in 15 (21.4 %) women of the main group and 19 (24.3 %) women of the control group (р=0.4). At the end of study, increased aPWV was observed in both groups but the increase was more pronounced in the control group. Increased pulse blood pressure (PBP) was observed in 27 (32.1 %) patients of the main group and 26 (33.3 %) patients of the control group (р=0.87). At the end of study, PBP decreased from 47.2±7.2 to 45.3±6.9 mm Hg (р.

[Prognostic markers for the development of adverse outcomes in patients with chronic obstructive pulmonary disease and chronic heart failure].

AIM: To identify markers of adverse outcomes in patients with a combination of chronic obstructive pulmonary disease (COPD) and chronic heart failure (CHF). MATERIALS AND METHODS: 35 patients with COPD (without an anamnesis of coronary heart disease), 68 patients with COPD and CHF, 28 patients with CHF of ischemic genesis who were on treatment at the State Regional Clinical Hospital of Saratov were examined. The levels of the N-terminal fragment of the natriuretic peptide, galectin-3, the highly sensitive C-reactive protein, the proteins that bind fatty acids, the stiffness parameters of the arterial wall were determined; echocardiography was performed, calculated the index of comorbidity of Charlson. A year after entering the study, patients or their relatives were interviewed for their adverse outcomes. RESULTS: The combination of COPD and CHF is accompanied by an increase in the likelihood of the development of heart failure decompensation compared with the isolated course of COPD. The main causes of death of patients with combined pathology were respiratory failure and cardiovascular complications. Decompensation of CHF was 3,6 times more likely in patients with COPD and CHF of ischemic origin than in patients without previous myocardial infarction. The risk group the development of acute decompensation of heart failure within the next year is composed of patients with COPD and CHF having 3-4 functional classes of CHF, signs of decompensation in the small circulation, angina pectoris, past myocardial infarction. The most significant prognostic echocardiographic parameters were marked dilatation of the left auricles, reduction of the left ventricular ejection fraction less than 45%. The development of cardiovascular complications in patients with COPD and CHF is interrelated with an increase in arterial rigidity. The increase in total mortality is associated with the severity of heart failure and increased 24-hour arterial rigidity. CONCLUSION: The obtained results will allow to form high-risk groups and optimize the treatment-diagnostic process.

Comorbidities in inflammatory joint and spine diseases in XXI century.

AIM: The evaluation the occurrence of comorbidities in patients with inflammatory diseases of the spine and joints and the assessment of the general changes in comorbidities at the beginning of the XXI century compared to previous period. MATERIALS AND METHODS: Comorbidity was analyzed in 245 patients with spondyloarthritis who participated in the scientific program PROGRESS. Validated comorbidity assessment indices were used in the study. The analysis of 96 sources of literary bases RISC and PubMed were used in literature analysis. The results of their own observation and literary search were compared. RESULTS: According to the patients' cards, an analysis of the structure of comorbidities was conducted in 221 patients: 207 (93.66%) patients with spondyloarthritis had two or more comorbidities. The most common diseases were diseases of gastrointestinal tract (60.6%) and cardiovascular pathology (58.3%), secondary osteoarthritis (60.2%). According to literature sources, most of the comorbidities and spondyloarthritis are interrelated pathogenetically and undergo a change in the profile of rheumatic and/or related diseases undergo simultaneous changes. The emergence of new diseases in the structure of comorbidity and new drugs requires the development of recommendations that take into account the presence of comorbidity in patients with a rheumatic diseases. CONCLUSION: Most patients with spondyloarthritis has comorbidity. The change in rheumatic and non-rheumatic diseases that occurs in the 21st century has a mutual influence, changing the profile of patients and determining the change in the tactics of their management.

[The clinical diagnostic significance of auto antibodies to CD74 at axial spondylarthritis.]

The modern diagnostic approaches permit to diagnose axial spondylarthrosis (axSpA) at roentgenologic stage corresponding to ankylosing spondylitis (AS). While early diagnostic of non-roentgenologic axSpA (nr-axSpA) is still complicated. This situation conditions a need in searching new laboratory biomarkers for early diagnostic of spondylarthrosis, including auto-antibodies to antigen CD74 described recently. The purpose of study is to evaluate clinical diagnostic significance of auto-antibodies to antigen CD74 in case of axSpA. The technique of quantitative enzyme-linked immunosorbent assay was applied to measure content of auto-antibodies IgA to CD74 in samples of serum from 140 patients with axSpA: 68 with AS, 46 with nr-axSpA, 26 with psoriatic arthritis (PA) and 37 healthy representatives of control group with signs of axSpA totally clinically excluded. The average values of concentration of auto-antibodies IgA to CD74 in patients with axSpA and nr-axSpA made up to 3,5 ± 3,0 and 3,8 ± 2,9 U/ml correspondingly that reliably and significantly differed from patients with PA and healthy individuals - 2,1 ± 1,4 and 1,3 ± 1,4 U/ml correspondingly (p < 0,05). At threshold value of content of auto-antibodies IgA to CD74 higher than 2.0 U/ml in case of axSpA diagnostic sensitivity made up to 64.4%, specificity - 89.2%, risk factor of positive result - 5.9 whereas in patients with nr-axSpA at concentration 1.7 U/ml - 73,1%, 84% and 4,5 correspondingly. The auto-antibodies IgA to antigen CD74 are associated withaxSpA but not with PA that permits to use the given marker for diagnostic of axial spondylarthrosis and also in case of differential diagnostic between axSpA and PA.

[Sudden Cardiac Death in Patients With Chronic Obstructive Pulmonary Disease].

The article contains review of data on the problem of sudden cardiac death (SCD) in patients with chronic obstructive pulmonary disease (COPD). Large studies have shown that risk of cardiovascular mortality in patients with chronic obstructive pulmonary disease (COPD) is 2-3 times greater than in general population. The incidence of COPD and ischemic heart disease (IHD) progressively rises with age. Combination of these diseases is often observed in clinical practice among patients older than 40 years. According to the population study published in 2015 COPD has been associated with elevated risk of SCD especially in patients with frequent exacerbations within 5 years after diagnosis. SCD risk rises in patients with combination of COPD and cardiovascular diseases (myocardial infarction, hypertension, disturbances of cardiac rhythm), with severe clinical course, with frequent exacerbator phenotype. One of main factors underlying SCD is development of arrhythmia. According to 24-hour ECG monitoring supraventricular arrhythmias including atrial fibrillation prevail in COPD. Ventricular rhythm disturbances have been registered in patients with COPD mostly after large myocardial infarctions. Pathogenesis of arrhythmias in COPD if multifactorial. Targeted detection of comorbidities would allow to take into consideration individual characteristics while choosing pharmaotherapy. In patients with COPD and high SCD risk one should limit use of broncholytics especially short-acting, methylxanthines, drugs with potential to induce QT prolongation.

[Stable high interleukin-17A concentration in patients with ankylosing spondylitis treated with tumor necrosis factor-α inhibitors during a year]. / Kontsentratsiia interleikina-17A ostaetsia stabil'no vysokoi u bol'nykh ankiloziruiushchim spondilitom, poluchaiushchikh ingibitory faktora nekroza opukholi α v techenie goda.

AIM: To assess changes in the concentration of interleukin-17A (IL-17A) in patients with ankylosing spondylitis (AS) treated with tumor necrosis factor-α (TNFα) inhibitors during a year. SUBJECTS AND METHODS: Examinations were made in 30 patients (22 (73.3%) men) aged 38.35±9.19 years with AS (modified New-York criteria, BASDAI ≥4.0; AS duration, 11.4±9.6 years) and in 20 healthy individuals (12 (60%) men) aged 40.1±7.7 years) (a control group). All the patients were treated with infliximab (remicade, MSD) 5 mg/kg body weight during a year according to the recommended regimen. BASDAI and ASDAS were calculated; C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and TNFα and IL-17A concentrations were measured before and 52±2 weeks after TNFα inhibitors treatment. BASDAI/ASDAS improvement, ESR and CRP decreases; ASAS20/40 responses, ASAS partial remission, and an ASDAS improvement were estimated. RESULTS: In the patients with AS, the concentrations of TNFα and IL-17A were higher than those in the healthy individuals (p < 0.000). Twelve (40%) AS patients treated with TNFα inhibitors achieved ASAS partial remission. The average estimated back pain, ASDAS and BASDAI scores, and CRP and ESR substantially reduced (p<0.000 for all). The concentration of TNFα decreased from 17.8±7.6 to 7.3±3.2 pg/ml (p<0.000). The IL-17A level was 28.4±14.4 and 32.1±12.2 pg/ml before and after the treatment, respectively. The baseline level of IL-17A was lower in the patients with AS who had achieved remission than that in those who had not (p=0.01). CONCLUSION: The improvement due to one-year AS treatment with TNFα inhibitors is not associated with the reduction of IL-17A concentrations. In the patients who failed to achieve ASAS partial remission, the baseline and final serum concentrations of IL-17A were higher than in those who achieved the remission.