http://dspace.zsmu.edu.ua/handle/123456789/238 Tue, 12 May 2026 18:18:45 GMT 2026-05-12T18:18:45Z http://dspace.zsmu.edu.ua/handle/123456789/24969 Название: Pattern of endothelial progenitor cells and apoptotic endothelial cell-derived microparticles in chronic heart failure patients with preserved and reduced left ventricular ejection fraction Авторы: Berezin, A. E.; Kremzer, A. A.; Martovitskaya, Y. V.; Berezina, T. A.; Gromenko, E. A.; Кремзер, Олександр Олександрович Аннотация: Background: Chronic heart failure (HF) remains a leading cause of cardiovascular (CV) mortality and morbidity worldwide. The aim of the study was to investigate whether the pattern of angiogenic endothelial progenitor cells (EPCs) and apoptotic endothelial cell-derived microparticles (EMPs) would be able to differentiate HF with reduced (HFrEF) and preserved (HFpEF) ejection fraction. Methods: One hundred sixty four chronic HF subjects met inclusion criteria. Patients with global left ventricular ejection fraction ≥50% were categorized as the HFpEF group (n = 79) and those with ≤45% as the HFrEF group (n = 85). Therefore, to compare the circulating levels of biological markers 35 control subjects without HF were included in the study. All control individuals were age- and sex-matched chronic HF patients. The serum level of biomarkers was measured at baseline. The flow cytometric technique was used for predictably distinguishing circulating cell subsets depending on expression of CD45, CD34, CD14, Tie-2, and CD309 antigens and determining endothelial cell-derived microparticles. CD31+/annexin V+ was defined as apoptotic endothelial cell-derived MPs, MPs labeled for CD105+ or CD62E+ were determined as MPs produced due to activation of endothelial cells. Results: In multivariate logistic regression model T2DM(R2=0.26; P=0.001), obesity (R2=0.22; P=0.001), previous MI (R2 = 0.17; P = 0.012), galectin-3 (R2 = 0.67; P = 0.012), CD31+/annexin V+ EMPs (R2 = 0.11; P = 0.001), NT-proBNP (R2 = 0.11; P = 0.046), CD14+CD309+ cells (R2 = 0.058; P = 0.001), and CD14+СD309+ Tie-2+ cells (R2 = 0.044; P = 0.028) were found as independent predictors of HFpEF. Using multivariate Cox-regression analysis adjusted etiology (previous myocardial infarction), cardiovascular risk factors (obesity, type 2 diabetes mellitus) we found that NT-proBNP (OR 1.08; 95% CI = 1.03–1.12; P = 0.001) and CD31+/annexin V+ EMPs to CD14+CD309+ cell ratio (OR 1.06; 95% CI = 1.02–1.11; P = 0.02) were independent predictors for HFpEF. Conclusion: We found that CD31+/annexin V+ EMPs to CD14+CD309+ cell ratio added to NT-proBNP, clinical data, and cardiovascular risk factors has exhibited the best discriminate value and higher reliability to predict HFpEF compared with NT-proBNP and clinical data/cardiovascular risk factors alone. Fri, 01 Jan 2016 00:00:00 GMT http://dspace.zsmu.edu.ua/handle/123456789/24969 2016-01-01T00:00:00Z http://dspace.zsmu.edu.ua/handle/123456789/24923 Название: Взаимосвязь между циркулирующим уровнем остеопротегерина и инсулинорезистетностью у больных с хронической сердечной недостаточностью ишемического генеза Авторы: Кремзер, А. А.; Кремзер, Олександр Олександрович; Kremser, О. О. Аннотация: Метою даного дослідження було встановити взаємозв’язок між циркулюючим рівнем остеопротегеріна (ОПГ ) і інсулінорезістетністю у хворих з ХСН ішемічного генезу. У дослідженні взяли участь 300 пацієнтів з документованою ішемічною хворобою серця і ХСН у віці від 48 до 62 років. Резистентність до інсуліну верифікували за моделлю оцінки гомеостазу ( HOMA IR ) . Оцінка внутрішньосерцевої кардіогемодинаміки здійснювалася за допомогою трансторакальной ехокардіографії за загальноприйнятим методом у В режимі ехолокації , імпульсної і тканинної доплерографії . Зміст ОЗГ було виміряно за допомогою техніки ELISA на початку дослідження одноразово. Результати. Формування ІР у пацієнтів з ХСН ішемічного генезу у відсутності цукрового діабету 2 типу асоціюється з істотним підвищенням циркулюючого рівня ОПГ. Мультіваріантний логістичний аналіз дозволив встановити , що тільки рівень ОПГ (r = 0,516; P = 0,002), швидкість глобальної поздовжньої деформації ЛШ (r = 0,462 ; P = 0,001 ) , швидкість глобальної деформації по колу (r = 0,401 ; P = 0,001 ) і NT pro МНУП (r = 0,326; P = 0,001) незалежно асоціювалися з ІР. При цьому дискримінантний потенціал ОПГ в поєднанні зі швидкістю глобальної поздовжньої деформації ЛШ або з ФК ХСН достовірно не відрізняється від такого у ОПГ. The purpose of this study was to determine the relationship between circulating levels of osteoprotegerin (OPG) and insulin resistance in patients with ischemic chronic heart failure (CHF). The study involved 300 patients with documented coronary artery disease and heart failure at the age of 48 to 62 years. Insulin resistance verified by the homeostasis model assessment (HOMAIR). Evaluation of cardiac hemodynamics was performed using transthoracic echocardiography by the generally accepted in the B mode echolocation pulse and tissue Doppler imaging. OPG content was measured using the ELISA technique once at baseline. Results. Resistance for insulin in patients with ischemic CHF without type 2 diabetes mellitus is associated with a significant increase in circulating levels of OPG. Multivariate logistic analysis revealed that only the level of OPG (r = 0.516; P = 0.002), global longitudinal strain rate LV (r = 0.462; P = 0.001), the global circumference rate of LV (r = 0.401; P = 0.001), and NT pro BNP (r = 0.326; P = 0.001) were independently associated with TS. In this discriminant potential OPG combined with the speed of the global left ventricular longitudinal strain or CHF FC was not significantly different from that of OPG. Wed, 01 Jan 2014 00:00:00 GMT http://dspace.zsmu.edu.ua/handle/123456789/24923 2014-01-01T00:00:00Z http://dspace.zsmu.edu.ua/handle/123456789/24904 Название: The Association of Subclinical Hypothyroidism and Pattern of Circulating Endothelial-Derived Microparticles Among Chronic Heart Failure Patients Авторы: Berezin, A. E.; Kremzer, O. O.; Martovitskaya, Yu. V.; Samura, T. A.; Berezina, T. A.; Березін, О. Є.; Кремзер, Олександр Олександрович; Самура, Тетяна Олександрівна Аннотация: Background: Subclinical hypothyroidism (SH) is diagnosed biochemically by the presence of normal serum free thyroxine concentration, in conjunction with an elevated serum thyroid-stimulating hormone level. Recent studies have demonstrated the frequent association between SH and cardiovascular diseases and risk factors. Objectives: To evaluate the impact of SH on patterns of circulating endothelial-derived microparticles, (EMPs) among chronic heart failure (CHF) patients Patients and Methods: This is a retrospective study involving a cohort of 388 patients with CHF. Fifty-three CHF subjects had SH and 335 patients were free from thyroid dysfunction. Circulating levels of N-terminal-pro brain natriuretic peptide (NT-proBNP), high-sensitivity C-reactive protein (hs-CRP), thyroid-stimulating hormone (TSH), total and free thyroxine (T4), and triiodothyronine (T3), and endothelial apoptotic microparticles (EMPs), were measured at baseline. SH was defined, according to contemporary clinical guidelines, as a biochemical state associated with an elevated serum TSH level of greater 10 μU/L and normal basal free T3 and T4 concentrations. Results: Circulating CD31+/annexin V+ EMPs were higher in patients with SH compared to those without SH. In contrast, activated CD62E+ EMP numbers were not significantly different between both patient cohorts. Using uni (bi) variate and multivariate age- and gender-adjusted regression analysis, we found several predictors that affected the increase of the CD31+/annexin V+ to CD62E+ ratio in the patient study population. The independent impact of TSH per 6.5 μU/L (odds ratio [OR] = 1.23, P = 0.001), SH (OR = 1.22, P = 0.001), NT-proBNP (OR = 1.19, P = 0.001), NYHA class (OR = 1.09, P = 0.001), hs-CRP per 4.50 mg/L (OR = 1.05, P = 0.001), dyslipidemia (OR = 1.06, P = 0.001), serum uric acid per 9.5 mmol/L (OR = 1.04, P = 0.022) on the increase in the CD31+/annexin V+ to CD62E+ ratio, was determined. Conclusions: We believe that the SH state in CHF patients may be associated with the impaired pattern of circulating EMPs, with the predominantly increased number of apoptotic-derived microparticles. Thu, 01 Jan 2015 00:00:00 GMT http://dspace.zsmu.edu.ua/handle/123456789/24904 2015-01-01T00:00:00Z http://dspace.zsmu.edu.ua/handle/123456789/24872 Название: Dibenzoxazepine Anodic Determination and Removal on CuS Nanoparticles: A Theoretical Insight Авторы: Tkach, V. V.; Kushnir, M. V.; de Oliveira, S. C.; Biryuk, I. G.; Sykyrytska, T. B.; Ivanushko, Ya. G.; Yagodynets', P. I.; da Silva, A. O.; Derevianko, N. P.; Zavhorodnii, M. P.; Odyntsova, V. M.; Krasko, M. P.; Shevchenko, I. M.; Lavrinenko, V. M.; Yermak, O. T.; Niyazov, L. N.; Musayeva, D. M.; Kosimov Jabborova, O.; Sagdullayeva, G.; Sharipova, E.; Morozova, T. V.; Mudrak, O. V.; Garcia, J. R.; José Inácio Ferrão da Paiva Martins; Kormosh, Zh. O.; Grekova, A. V.; Burdina, Ia. F.; Lavrik, R. V.; Одинцова, Віра Миколаївна; Красько, Микола Петрович Аннотация: For the first time, the electroanalytical system for the electrochemical determination and removal of dibenzoxazepine chemical warfare agent on CuS-modified anode has been given. Two oxidation scenarios, including the electropolymerization and N-oxidation, are possible for dibenzoxazepine. Either way, both dibenzoxazepine and its N-oxide will be removed from the environment towards the polymer phase. The analysis of the electroanalytical process using linear stability theory and bifurcation analysis confirms that the steady-state stability allows us to use this process for both electroanalytical and electrocatalytic purposes. Thu, 01 Jan 2026 00:00:00 GMT http://dspace.zsmu.edu.ua/handle/123456789/24872 2026-01-01T00:00:00Z