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Introduction. Adropin is a hormone that is involved in the pathogenesis of arterial hypertension (AH) and diseases of the cardiovascular system and energy homeostasis, in particular, it reduces insulin resistance by controlling glucose synthesis in the liver. Aim. To investigate the level of adropin and its interaction with risk factors for AH in overweight and obese patients. Materials and methods. 70 patients with AH and overweight or obesity aged 62.4 ± 10.4 years were examined. 10 practically healthy people were selected for the control group. The level of adropin was determined by enzyme immunoassay (Finetest Elisa Kit) in blood serum. The inclusion criteria for participation in the study were: age of patients 40–75 years; arterial hypertension; BMI > 25 kg/m2. Results. It was established that the average level of adropin in patients with AH and comorbid obesity or excess body weight (n = 70) was 775.5 ± 311.7 pg/ml, which is significantly lower than the content of this peptide in practically healthy individuals (n = 10), which was 1084.6 ± 110.2 pg/ml (p < 0.01). A tendency towards a decrease in the level of the hormone in men was noted. It is probably associated with a much higher prevalence of smoking among this category of people, since when assessing the factors contributing to the development of AH and worsening its prognosis, a significant decrease in adropin was found in persons with a history of smoking (p < 0.01). In obese patients (BMI > 30 kg/m2), the level of adropin was significantly lower (p < 0.05), as well as in individuals with blood pressure > 150/90 mm Hg (p > 0.05). Conclusions. The level of serum adropin is significantly reduced in persons with AH and overweight and obesity compared to practically healthy persons. Factors contributing to a decrease in peptide concentration include smoking, obesity, and elevated blood glucose levels. Blood pressure indicators are not critical for changes in blood hormone concentration, which is probably due to medications used to treat AH.

Relevance. The combination of coronavirus disease (COVID-19) with arterial hypertension (AH)  and chronic obstructive pulmonary disease (COPD) is associated with decreased saturation, general clinical signs of inflammation, coagulopathies and worsens the course and prognosis of the disease. That is why it is important to identify all possible risk factors for complicated pathology for the prevention and timely treatment of this category of patients. Objective: to study the feature of coronavirus disease in patients with AH and COPD. Materials and methods. A total of 101 patients aged 30 to 80 years with COVID-19 were examined. The first group included 26 people with COVID-19 and COPD (GOLD 2, groups A, B), and the second group included 75 patients with COVID-19 and AH (I-III stages, 1-3 grade). The parameters of the general blood test, biochemical blood test, coagulation testing, D-dimer, C-reactive protein (CRP), and ferritin in the blood were studied. Results. Patients with COVID-19 and COPD had higher erythrocyte sedimentation rate (p> 0,05) and leukocytosis (p <0,05), as well as increased concentrations of creatinine (p < 0,05)  and urea (p < 0,01) that indicates the presence of renal pathology. Patients with COVID-19 and AH had significantly lower prothrombin time (p < 0,05) and international normalized ratio (p < 0,05), as well as a higher prothrombin index (p <0,05), which indicates the benefits of the procoagulant properties of blood in this category of patients. The level of D-dimer (p> 0,05), CRP (p> 0,05), and ferritin (p <0,05) was higher in patients of the 2nd group, which indicates a more severe course of coronavirus disease, as well as more high risks of thromboembolic complications. Conclusions. The features of coronavirus disease in patients with hypertension indicate a more severe course of the pathology and a high risk of thromboembolic complications, as evidenced by the procoagulant properties of blood and a high level of D-dimer, CRP, and ferritin. According to the data of clinical and laboratory examinations in patients with COPD and COVID-19, there was a significant increase in creatinine, urea, and leukocytosis, which may indicate the addition of renal pathology.

Relevance. Patients with comorbid pathology, including arterial hypertension (AH), coronary artery disease, type 2 diabetes, and cerebrovascular disease have been shown to be at risk for coronavirus disease (COVID-19). Currently, among the pathogenetic mechanisms of vascular endothelial damage are considered direct effects of SARS-COV-2 virus, as well as proinflammatory cytokines, which lead to a «cytokine storm» with unpredictable consequences for the patient. In this aspect, the role of leukotriene B4 (LTB4) – one of the first candidates to provoke a hyperimmune inflammatory response in the progression of COVID-19 – was insufficiently elucidated. Objective: to investigate the level of leukotriene B4 (LTB4) in patients with AH with and without coronavirus disease 2019. Methods. 78 people with AH and overweight or obesity who were treated at the Lviv Emergency Hospital were examined. All patients were divided into 2 groups: group 1 (n=37) – persons with AH (stage І-ІІІ, grade 1-3); group 2 (n=41) – patients with AH (stage І-ІІІ, grade 1-3), COVID -19 and interstitial lung disease. Anthropometric measurements with a determination of body mass index (BMI), echocardiography, a blood test, biochemical blood test with determination of glucose, alanine aminotransferase, aspartate aminotransferase, creatinine, and urea were performed. Serum blood samples for the examination of LTB4 (Elabscience Elisa Kit) were taken and processed using ELISA method. Results. Saturation was significantly lower in patients of group 2, while heart rate and body temperature were higher (p < 0,01) compared to group 1. There was a significant decrease in hemoglobin level, increase in ESR, glucose, and LTB4 in individuals with AH and COVID-19, which is probably due to the presence of inflammation in the lung tissue in coronavirus infection. The concentration of LTB4 ranged from 370 to 3600 pg/l in patients of group 2. 19 individuals (46,3%) of group 2 had a higher level of LTB4 than the median value, which is probably associated with a more severe course of coronavirus infection. A positive correlation between LTB4 and BMI (rs= 0,369; p < 0,05) was found in individuals with AH. Conclusions. The level of LTB4 is higher in patients with AH and COVID – 19 than in individuals with AH, due to the severity of the inflammation process in this comorbid pathology.