Vol 22, No 2 (2015)

To examine the content of 25 macro- and trace elements in hair samples of females at elderly and old age, the methods of atom emission and mass-spectrometry with inductively bonded argon plasma were used. Elements' content in both examined groups did not show statistically important differences (p > 0.05), except Si, which content was 2.5 times lower in the group of the old women. Ca, Cr, Cu, Mg, Mn, P, Si, Zn content was lower, while Al, As, B, Cd, Pb, Sn content was higher than in the elderly women. Both groups were characterized by a high deficit of many essential elements. It has been found that the median lines of Co and Se concentration were below the lowest limit of reference values in all the examined subjects. Due to the analysis of data on the elements content in the surveyed people's hair, it is possible to assess imbalance of mineral metabolism in females of both age groups constant residents of the Russian Northeast region in order to carry out prenosological diagnostics, primary prophylaxis and correction of the revealed disorders both on the individual and micropopulation levels.

Here we report on autonomic status using the statistic and spectral parameters of the heart rate variability (HRV) of 23 young females (19.9±1.4 years) under varied environmental and physical conditions: 4 phases of the menstrual cycle (MC, early and late follicular, ovulation and luteal), spring and autumn seasons. Being taken separately, either factor of the menstrual cycle phase or season imposed only minor effects on the HRV, but most of the variables of the HRV were significantly different from other phases in the ovulation phase in the spring season in the form of the parasympathetic nervous system decreased activity with a reciprocal increase of the hormone-hypothalamic level of the cardiovascular regulation, what was seen as the increased VLF (very low frequencies) and decreased HF (high frequencies) and the decreased portion of successive pairs of intervals (pNN50).

The cross-sectional epidemiological study has been performed to identify peculiarities of health risk factors perception by different categories of medical workers in the Vologda Hospital. Radioactive (91.4 %), chemical (87.6 %) and microbiological (73.7 %) pollution was perceived by the respondents as bringing the highest risk to health. The average risk factors included genetic and biological factors (61.7 %), emergency situations (58.8 %) and lifestyle factors (45.0 %). Physical and climatic factors and factors of life quality were perceived to be least hazardous. There were detected statistically significant differences in subjective perception of certain risk factors between doctors and nursing staff.

For the first time, there has been conducted a cross-level research of constant potentials of the brain in primary school-aged children for the purpose of studying psychophysiological features of children with aggressive behavior. On the whole, there have been examined 184 children aged 7-11 years from general education classes. The main group (31 persons) consisted of children with a high level of hypertrophic and brutal aggression. The comparison group (153 persons) included children with normal aggression not exceeding the level of protection. The study was conducted using the physiological method of neuroenergy measurement and the psychological methods -the questionnaire "AGKT" and the Eysenck questionnaire. The analysis of the results showed that the children with aggressive behavior had a lower level of the constant potentials in the frontal structures in comparison with other brain structures against a significant increase in cerebral metabolism in general (the difference was statistically significant at the level 0.05 and 0.01) in combination with predominance of the left hemisphere activity. The results gave a comprehensive assessment of behavioral disorders of the children, with possibility to identify problems of adaptation and socialization of children with aggressive behavior at school.