Changes in the prevalence of atrial fibrillation in the Russian population over a 13-year follow-up

AIM: To study the prevalence of atrial fibrillation (AF) in the Russian urban population cohort aged 45-69 years and its changes over 13-year follow-up during aging. MATERIAL AND METHODS: This cross-sectional long-term prospective study included random population sample of men and women 45-69 years (n=9360, HAPIEE project, Novosibirsk), which was examined in 2003-2005 and was re-examined twice and followed up for about 13±1,00 years in men and 13,1±2,17 years in women. The incidence of AF was assessed for individuals without AF or cardiovascular disease (CVD) at the baseline examination. Statistical analysis was performed using the SPSS software package (v.13.0). RESULTS: In a population sample over a 13-year follow-up, AF prevalence increased from 1,6% (1,1% among women and 2,1% among men) at the age of 45-69 years to 4,2% (3,0% among women and 6,1% among men) aged 55-84 years according to screening rest ECG examinations. The prevalence of new AF cases over a 13-year followup in the cohort of 45-69 years old without previous CVD and AF was 5,6%, of which 40% were paroxysmal. The mean age at the time of first registered AF was 69±6,93 years, and was 2 years higher in women (70,0±6,83) than in men (68±6,93). The average period before the AF onset among people aged 45-69 years without baseline CVD and AF was 7,5±3,83 years for men and 8,1±4,02 years for women. The total prevalence of AF in the population sample was 8,3%. The highest AF prevalence was registered at the age of 65-69 years (11,4%) for men and 5 years later for women (12,0%) (p80 years decreased and amounted to 4,1% among men and 5,7% among women. CONCLUSION: In the Russian population sample (Novosibirsk) aged 45-69, the AF prevalence increased from 1,6 to 8,3% over 13 years of follow-up. In addition, 473 new AF cases were identified, ~40% of which were paroxysmal AF. The prevalence of AF in the Siberian population sample for the 45-60 years age group is comparable with the large Russian and North American studies, but higher for persons aged 60-74 years and lower for older age group, for both men and women

THE PATTERNS OF FUNDUS ABNORMALITIES AND CARDIOVASCULAR DISEASES

Purpose: The patterns of findings in a fundus in cardiovascular (СVD) and chronic non-communicable diseases have been investigated in European and North American populations with heterogeneous results. The subject has not been practically studied in Russian population. We performed systematic literature search for 15 years (2001-2015) to summarize the data from published studies on the relationship between fundus abnormalities and CVD and its’ complications. Methods. We used the Internet resources: PubMed (http://www.ncbi.nlm.nih.gov/pubmed/), Scopus (http://www.scopus.com), e-library (http://elibrary.ru/defaultx.asp) and major domestic cardiological, therapeutic and ophthalmologic journals. Results. The analysis of the data accumulated in the literature showed the associations between specific patterns of fundus abnormalities and CVD, and also a prognostic impact of these changes on the development of complications of CVD. Namely are shown: the association between a narrowing of arteries and dilation of veins and the risk of ischemic heart disease and fatal CVD; the association between an increase of vein diameter and the risk of a cerebral stroke; the relationship between fundus changes and aging and risk factors of CVD; the contribution of ophthalmoscopic identification of fundus abnormalities to the stratification of cardiovascular risk

RESULTS OF DYNAMIC ASSESSMENT OF MELATONIN RECEPTOR EXPRESSION IN LYMPHOCYTES IN PATIENTS WITH ACUTE MILD AND SEVERE PANCREATITIS

The authors present results of the investigation of melatonin receptors expression in lymphocytes in dynamics in 102 patients with acute pancreatitis of mild and severe form and in 50 volunteers. A correlated analysis was made between obtained results of laboratory and instrumental researches and clinical course of acute pancreatitis. The decrease of MT1 receptors expression was noted on 25% in patients with acute pancreatitis. The decline of MT2 receptors expression was observed on 40% of patients with acute severe pancreatitis and in a case of acute mild pancreatitis — on 15,5%, respectively. Values of MT1 and MT2 expression were equal between healthy volunteers. The decline of MT2 expression was a prognostic unfavourable sign. Obtained results of dynamic expression assessment of MT-receptors were presented as MT2/MT1 indices. Given index didn’t change during disease, because of this, the index could be used as a prognostic development marker of destructive form of acute pancreatitis at the moment of patient’s admission to hospital. Mean values of MT2/MT1 were determined for the purpose of universalization of used method (1,13±0,09 for mild form and 0,81±0,09 for severe form of acute pancreatitis, respectively)