[Occupation and health of medical workers in Bashkortostan Republic].

Occupational morbidity analysis covered medical staffers of Bashkortostan Republic over 1997-2010. Findings are that health care is an activity with high occupational risk independent on type of medical establishment, speciality and position. In 1999-2005 significant increase of occupational morbidity in Bashkortostan Republic was seen--up to 4 times over average in the Republic.

[Critical level of radiation damage of root apical meristem and mechanisms for its recovery in Pisum sativum L].

The dose dependencies of growth and cytogenetical values have been built to determine the critical level of root apical meristem damage induced by cute irradiation in the range from 2 to 20 Gr. We have analyzed the frequencies of aberrant anaphases and the aberration distribution per cell, on the one hand, and the growth of biomass, the survival and regeneration of the root meristem, on the other hand. The critical level of damage to the stem apical meristem and root of seedlings was defined as 44-48% of aberrant anaphase.

[Regeneration mechanisms of ontogenetic radioadaptation in plants].

Experimental data were obtained that in pea seedlings modified by decapitation of main root had increased radioresistance (radioadaptation), fixed by various parameters of growth activity of lateral roots, and decreased ability to repair sublethal damages, detected by method of acute gamma-irradiation dose fractionation. These facts both with enlargement of dose dependence shoulder in lateral roots of decapitated seedlings led to conclusion that main role in such mechanism of radioadaptation effect of decapitation belongs to supercellular processes such as repopulation and regeneration. Conclusion was confirmed by the additional comparative investigations of cyto- and histological parameters of apical meristems of intact (control) and decapitated (experiment) lateral roots.

[Hygienic evaluation of the risk of man-made environmental influences on human health].

In Ufa, the largest industrial center of oil-refining industry, petrochemistry, and chemistry, a long-term exposure to chemical compounds has resulted in a high chemical load on the body. A previous exposure to high doses and concentrations of a complex of pollutants caused a reduction in the total resistance of the entire population on the territory of the city. The higher mortality rates, including those due to cancer, undoubtedly reflects both the exposure to delayed effects of a complex of chemical compounds, the total level of which exceeded the hygienic standards, and the combined effects of a whole complex of pollutants over 25-30 years.

[Evaluation of the demographic situation in a town with oil refinery and chemical industries].

In recent years the problem of population health has been acquiring the character of a growing threat to national safety. This is grounded first of all on observation of changes in medical demographic indices, especially in ecologically disadvantaged regions among which are the Republic of Bashcortostan and its capital Ufa with large oil refinery and petrochemical enterprises. High population density and numerous oil refineries combined with the unfavorable meteoconditions are the factors of heavy pollution of the area with global and local ecotoxicants.