International Union for Circumpolar Health Ministry of Public Health and Social Development of RF Russian Academy of Medical Sciences Siberian Branch of Russian Academy of Medical Sciences Siberian Branch of Russian Academy of Sciences Medical Polar Fund “Science” The Northern Forum

Abstracts

Ecology and adaptation (medical ecology)

The populations experiencing extremes of the Russian North-East differ in adaptation terms. To study anthropo- and somatometric parameters, determine macro- and microelement (ME, total 24) concentration in hair sample, we examined 7-17 aged children and teenagers among aborigines and residents of Magadan region and Chukotka born from migrants that count one-two generations. Our data suggested the lowered essential microelements in above examined subjects. The children residing in the seaside area of Magadan region showed the decreased concentrations in Mg, Ca, K, Co, Se, Mn, Sn, Cd, Cr, an increase in Si, Ti, and As, compared to the norm. In the continental area the lowered values of Co, Mg, Se, Mn, and the elevated values of Si, Ti were observed.

In hair samples of Magadan town teenagers the elevated Na and Si were found with the average arsenic level exceeding the maximum permissible concentration. ME peculiarities can testify to the different trends in age-related dynamics due to puberty.

Between 7 aged boys and girls of newcoming people no reliable differences in body height and mass were observed. Since the age of 8 the differences are found, however, at 11-13 years old, only body mass differences remained reliable with no those observed in height. Beginning from 14, sex-related differences in body height and mass proved to increase till the age of 17 (males: 176.8 cm, 65.5 kg; females: 166.8 cm, 56.9 kg).

Between 7 aged boys and girls of Chukotka residents, no body height and mass difference was found either. The average height was 3cm shorter vs. those of Magadan town. At the age of 8-9, sex-related difference in body height and mass were found, however, at the age of 10-11, only body mass values differed being reliably higher in boys compared to the girls, and equal to those of Magadan town. From the age of 12 up to 17, sex-related differences in body height and mass showed an increase. Of note that those values proved to be lower in 17 aged boys of Chukotka compared to Magadan region residents, while the girls showed 1.2 kg higher values in the body mass vs. Magadan with no difference observed in height.

The explorations suggested that natural and climatic variations of the compared regions influence children’s health parameters. More severe extremes are responsible for more pronounced disproportions in children’ morphofunctional development.

Note. Abstracts are published in author's edition

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Last update: 06-Jul-2012 (11:52:05)