Cognitive functions of young Novosibirsk residents and metabolic syndrome

Abstract

The aim of the study was to provide a population assessment of cognitive impairment patterns in a representative sample of 25–44-year-old men and women living in Western Siberia with metabolic syndrome (MS). Material and methods. A cross-sectional population survey of a random representative sample of 25–44-year-olds of both sexes (1503 people) permanently residing in Western Siberia (Novosibirsk) was performed. The study of cognitive functions was conducted in 1009 people: 463 men (45.9 %) and 546 women (54.1 %). A 10-word memorization test was performed according to the methodology proposed by A.R. Luria (unified for screening purposes), with subsequent reproduction after interfering tasks (recall), a proof-reading test (a letter modification of the Bourdon test used for screening purposes), as well as the exclusion of concepts (a verbal version of the test). The MS criteria (VNOK, 2009) were used: FROM > 80 cm in women and > 94 cm in men and 2 of the following criteria: blood pressure ≥ 130/85 mmHg, TG content ≥ 1.7 mmol/L, HDL-C 3.0 mmol/L, plasma hyperglycemia > 6.1 mmol/L. Results. In the surveyed sample of residents of In Novosibirsk, 25–44 years old, MS occurred in every fourth person tested for cognitive functions (26.06 %): 148 men (31.96 %) and 115 women (21.06 %), MS occurred more often in women than in men. With age, there is an increase in the frequency of MS in both sexes (p < 0.05). For MS, statistically significant associations are shown with direct memorization (1st memorization experience, p = 0.025), the number of directly memorized words (p = 0.015) and with delayed reproduction of words after an interfering task (p = 0.015) in the 10-word memorization test by A.R. Luria. The average rank, as well as the average values of these cognitive tests, were higher in individuals without MS compared to those with MS diagnosed. There were no links between MS and the indicators of the proofreading test. There were also no statistically significant associations of MS with the number of animals named in 1 min in the speech activity test when studying semantically mediated associations. Conclusion. In a population study of young people (25–44 years old) for the first time in Russia/A statistically significant deterioration of cognitive memory patterns in individuals with MS components has been proven in Siberia (Novosibirsk). This confirms the importance of the «cerebrovascular continuum» in the genesis of cognitive impairment at a young age.

Keywords

• young age
• cognitive impairment
• metabolic syndrome