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Bilovol et al.                                                                                                                                     Relationship between atrial fibrillation, BMI and adipokines

           Table 4: Characteristics of MHO-type patients by Wildman criteria
           Index                               Wildman criteria          MHO-type patients           P
           SAD (mmHg)                               ≤ 130                    123.4 ± 2.4            0.05
           DAD (mmHg)                               ≤ 85                     78.8 ± 2.2             0.05
           Triglycerides (mmol/L)                   ≤ 1.70                   1.46 ± 0.18            0.05
           HDL cholesterol: men,                    ≥ 1.04                   1.15 ± 0.08            0.05
           women (mmol/L)                           ≥ 1.30                   1.42 ± 0.11            0.05
           Fasting blood glucose (mmol/L)          ≤ 5.55                    4.08 ± 0.06            0.05
           C-reactive protein (mg/L)                < 4.72                   2.18 ± 0.06            0.05
           HOMA-IR                                  < 4.81                   2.62 ± 0.12            0.05
           MHO: metabolically healthy obesity; SAD: systolic blood pressure; DAD: diastolic blood pressure; HDL: high-density lipoprotein; HOMA-IR:
           homeostasis model of assessment insulin resistance

           Table 5: Serum leptin and high-molecular-weight adiponectin values in patients with different body weight
                                Control group                     Examined patients (n = 398)
            Index
                                  (n = 20)    Group 1 (n = 95)  Group 2 (n = 167)  Group 3 (n = 84)  Group 4 (n = 52)
            Serum leptin (mcg/mL)  21.6 ± 1.2    22.5 ± 1.6      23.5 ± 1.8       22.4 ± 1.4       21.9 ± 1.2
            HMWAN (mcg/mL)       14.74 ± 1.22  4.42 ± 1.06 *,#,&  13.82 ± 1.12 &,**  14.23 ± 1.07 &,**  3.75 ± 0.18 *,#,&
           *: reliability of differences (P ≤ 0.05) compared with control group; ^: reliability of differences (P ≤ 0.05) compared with group 1; #:
           reliability of differences (P < 0.05) compared with group 2; &: reliability of differences (P < 0.05) compared with group 3; **: reliability of
           differences (P < 0.05) compared with group 4
           Table 6: The incidence of various forms of atrial fibrillation in patients examined during the observation period (3.8
           ± 1.2 years)
                                                               Examined patients (n = 398) (%)
           Index
                                            Group 1 (n = 95)  Group 2 (n = 167)  Group 3 (n = 84)  Group 4 (n = 52)
           Paroxysmal atrial fibrillation (AFpx)  24 (25.3)      26 (15.6)         7 (8.3)        13 (25.0)
           Persistent atrial fibrillation (AFps)  17 (17.9)      24 (14.4)         4 (4.8)         9 (17.3)
           Permanent atrial fibrillation (AFpm)  11 (11.6)       19 (11.4)         2 (2.4)         7 (13.5)

           both  in  the direction of  increase and decrease is a   Adiponectin is involved in cardiac remodeling, not
           prognostically unfavorable factor for the development   only through direct action on the cardiac muscle, but
           of AF in patients even without any other manifestations   indirectly through the effect on endothelial function,
           of CV disease.                                     atherogenesis, and vascular inflammation. In addition,
                                                              adiponectin penetrates  the blood-brain barrier  and
           These results indicate that obesity not only leads to   affects the function of the heart  through the central
           different metabolic, hormonal and hemodynamic      nervous system [21] .
           changes in the body that affect the heart muscle,
           causing its structural and functional changes, but the   Adipose tissue can be related to the lipotoxicity of
           same changes are taking place in the patient with a   cardiomyocytes, which is carried out through unknown
           body  weight  deficit,  causing  similar  pathogenesis,    factors  with  the  participation  of  FATP4  and  CD36
           particularly AF development.                       transporters,  and  cardiomyocytes  can  maintain the
                                                              stability  of  adipose tissue,  affecting the secretion of
           Adiponectin  plays  an  important  role  in  many   adipokines [22] .
           metabolic processes; it has a protective effect,
           especially for development of endothelial dysfunction,   Insulin resistance - this is the main pathological
           atherosclerosis and other vascular diseases, the   mechanism that binds metabolic, anthropometric and
           progression  of  which  is  reflected  in  heart  rhythm   clinical indicators with the increasing risk of CVD and
           disturbances,  in  particular,  the  onset  of  AF [19] .   DM2. Adipocytokine imbalance, with a low level of
           Adiponectin is under the influence and itself influences   adiponectin, can act as a triggering mechanism for the
           the action of many pathophysiological mechanisms,   development of hyperinsulinemia, impaired glucose
           including pathological TNF-α, interleukin-6, C-reactive   tolerance, dyslipidemia, endothelial dysfunction,
           protein, insulin, body weight, blood pressure deviation,   arterial hypertension, abdominal obesity, fibrosis and
           and progression of many chronic diseases [20] .    atrial fibrillation [23] .
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