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Aim. To compare clinical, echocardiographic characteristics and blood biomarkers in patients with nonvalvular atrial fibrillation (AF) depending on the presence of left atrial appendage (LAA) thrombus and to identify independent predictors of LAA thrombosis.Material and methods. Patients with nonvalvular AF subjected to transesopha geal echocardiography before catheter ablation were divided into 2 groups comparable by sex and age: group 1 (n=45) — with LAA throm bosis; group 2 (n=97) — without LAA thrombosis. The patients underwent transthoracic and transesophageal echocardiography. In addition, the following blood biomarkers were analyzed: NT-proBNP (pg/ml), GDF-15 (pg/ml), TGF-β1 (pg/ml), PIIINP (ng/ml), high-sensitivity C-reactive protein (hsCRP) (mg/l), cystatin C (mg/l).Results. In group 1, persistent AF, coronary artery disease, heart failure were more often noted. In addition, group 1 patients had higher volume indices of both atria, left ventricular mass index and pulmonary artery systolic pressure, as well as lower left ventricular ejection fraction and blood flow velocity in the LAA. There were no differences in the groups in terms of the mean CHA2DS2VASc score, the proportion of patients taking oral anticoagulants (OAC), and the OAC spectrum. In group 1, higher levels of NT-proBNP (p=0,0001), GDF15 (p=0,0001), PIIINP (p=0,0002) were found with no differences in the levels of TGF-β1, hsCRP and cystatin C. A stepwise logistic regression revealed independent predictors of LAA thrombosis: LA volume index (ml/m2) — odds ratio (OR)=1,084, 95% confidence interval (CI) 1,028-1,143 (p=0,003); GDF15 ≥933 pg/ml — OR=3,054, 95% CI, 1,260-7,403 (p=0,013); PIIINP ≥68 pg/ml — OR=5,865, 95% CI, 2,404-14,308 (p

Essential hypertension (EG) is an age-associated disease. Often EG of elderly patients haven't good way of treatment. Thus, the search of new target molecules for EG therapy is an actual goal of gerontology and molecular medicine. It was shown, that during EG concentrations of GDF11 «youth protein» decreased in 3,3 times and GDF15, JAM-A/1, CCL11 «aging proteins» increased in 1,4-2,4 times. EG patients have abnormal microcirculation processes. It was shown as decreasing in 1,3 and 1,7 times of hemodynamic HI1 and H1-H3 indexes. EG patients have negative correlation of GDF15 concentration with arterial pressure. EG patients have no correlation of JAM-A/1 concentration with arterial pressure. Normal is positive correlation with GDF15, JAM-A/1 concentration with arterial pressure. GDF15 blood level during EG have positive correlation with HI1-HI3 and negative correlation with NEUR_HI2 and MAYER_HI3 indexes. It can show on pathogenesis mechanisms of endothelial and smooth muscles function of vessels tissues. We suppose, that the regulation of GDF11, GDF15, JAM-A/1, CCL11 «youth and aging proteins» can be target object of EG therapy.