Supernormal vascular aging — prevalence and determinants at population level (the ESSE-RF data)

Abstract

Background. Arterial stiffness, which is a marker of vascular damage and cardiovascular disease independent predictor, can be used as an indicator of vascular aging. Vascular changes may occur in some individuals earlier than it comes according to chronological age (early vascular aging syndrome) or later (healthy aging). SUPERNOVA (supernormal vascular aging) is a new protective phenotype in which very low arterial stiffness values are recorded regardless of the level of risk factors exposure.Objective. To assess the prevalence of SUPERNOVA phenomenon and risk factors in St Petersburg population-based sample.Design and methods. The survey of 1600 St Petersburg residents aged 24-65 years was performed in terms of the epidemiological observation study ESSE-RF (2012-2013). Anthropometry and fasting blood sampling for lipids and glucose detection and blood pressure measurement according to standard methods were performed. Pulse wave velocity (PWV) assessed by SphygmoCor (Australia) was performed in 524 people. 485 participants were selected without cardiovascular complications history. The participants were divided by age into 5 groups: persons under 30 years, 30-39 years, 40-49 years, 50-59 years, 60 years and older. PWV < 10th percentiles for healthy individuals PWV (Reference Values for Arterial Stability’s Collaboration, 2010) was detected as SUPERNOVA phenomenon in each age group. Mathematical and statistical data analysis was implemented using IBM SPSS Statistics 20.0.Results. SUPERNOVA phenomenon prevalence was 9,8 % (48 participants): 11,9 % women (32 participants) and 7,4 % men (16 participants). Among women systolic blood pressure (SBP) levels (p = 0,01) and body mass index (BMI) (p = 0,055) were significantly lower. Subjects with SUPERNOVA showed significantly lower SBP and diastolic blood pressure (DBP), BMI, glucose, triglycerides and lower prevalence of arterial hypertension (HTN), obesity, hypercholesterolemia and hypertriglyceridemia. In participants younger 30 years only obesity prevalence was significantly lower in respondents with SUPERNOVA, based on BMI criterion (p = 0,046). Participants aged 30-39 years showed no significant differences. In the group aged 40-49 years BMI (p = 0,02), abdominal obesity prevalence (p = 0,05), as well as SBP levels (p = 0,03) and DBP (p = 0,05) was significantly lower in individuals with SUPERNOVA. In the group aged 50-59 with SUPERNOVA significantly lower HTN prevalence (p = 0,03), glucose levels (p = 0,005) and BMI (p = 0,04) were found. In the older age group of 60-65 years subjects with SUPERNOVA have significantly lower levels of SBP (p = 0,014) and DBP (p = 0,014), as well as significantly lower prevalence of HTN (p = 0,03).Conclusions. At population level the phenomenon of supernormal vascular aging occurs in about 10 % without significant gender prevalence. HTN, obesity and metabolic factors are the determining factors of vascular aging. Ideal vascular health is associated with age-specific features.