ASSESSMENT OF THE SELENIUM STATUS OF RESIDENTS OF MOLDOVA BY HAIR

Abstract

The purposeof the workwasto assess the selenium status of the hair of Moldovans. Methods Hair samples were collected from 301 respondents aged 1 to 94 years. The total sample was divided into two parts: female - 192 and male - 109 respondents. Determination of selenium content in hair was carried out by fluorimetric method. Results The concentrations of selenium in the hair of Moldovan residents in the initial variation series were148-5000g/kg, the interquartile interval was 25-75 centiles and the median (Me) for the total variation series 429-759 (Me=582), for female 406-742 (Me=538) and male 487-798 (Me=631) g/kg. In age groups, the Me value varied from 486 to 703 g/kg. In the samples converted to a normal distribution, the mean values ​​(M) and standard deviations (SD) were 545205 for the general group, 555202 for female, and 628202 g/kg for male. Differences in the average values ​​of selenium concentration in the hair of female and male are statistically significant. In age groups the value of M fluctuated in the range of 541-612 g/kg. Conclusions. Under the conditions of optimal selenium supply of Moldovan ecosystems, the interquartile range of 2575 centiles of the Se content in the hair of the inhabitants of this country turned out to be higher than that of the inhabitants of the selenium-deficient Orenburg region and the Crimea, at the same time, comparable to the Se content in the hair of the inhabitants of Western Kazakhstan. The average values ​​of Se in the hair of the inhabitants of Moldova are close to the average values ​​in the hair samples from the United States and Canada, where there is a high supply of selenium to the population.