Vol 20, No 6 (2013)

This article presents results of a research of biochemical indicators of peripheral blood of the Tyva State University students (Tyva people). There have been considered metabolical features of the Tyva people depending on climatic conditions.

There has been estimated exposure of chemical contaminants in samples of poultry of regional producers sold in one of the largest hypermarkets in Ivanovo. Food consumption was studied in a cross-sectional study using the method of 24-hour food reproduction. Priority pollutants of the samples of poultry meat forming the risk of development of non-carcinogenic and carcinogenic effects in the population were nitrates, compounds of lead, cadmium, arsenic and mercury. The exposure value estimated on the basis of the median values for nitrate compounds, lead, cadmium, arsenic, mercury constituted respectively 8.64х10 -2; 1.12х 10 -3; 1.12х 10 -4; 2.80х10 -4; 7.98х10 -6 mg/kg of body weight. The coefficients of risk (HQ) have been calculated according to the prevailing contaminants. A dependence has been found of the decreasing series of heavy metal contamination in poultry meat, which had the following distribution pattern: Pb→ As→ Cd→ Hg.

A study of frequency characteristics of electroencephalograms (EEG) in high school students during increasing, maximum, decreasing and minimum duration of daylight has been conducted. In the paper, dynamics of the main EEG rhythms has been presented, their relationship with periods of daylight has been established. There has been revealed dominance of alpha and delta activity in contrasting seasons, periods favorable for the brain functioning and development of higher mental functions have been defined.

Anemia is associated with adverse outcomes after surgery, especially in the elderly persons. We have reviewed retrospective data on 435 elderly patients who underwent total hip or knee replacement to establish preoperative risk factors associated with postoperative anemia requiring red blood cell transfusion. The multiple logistic regression analysis was used to identify predictors of allogeneic blood transfusion. Independent risk factors for allogeneic blood transfusion were a low preoperative haemoglobin level, low patient’s weight, revision joint replacements and preoperative intravenous injections of tranexamic acid. Our data allow to assess the risk of postoperative severe anemia and to develop targeted intervention to decrease the risk.