This article offers an ecological analysis of urbanized ecosystem used for the microbiological monitoring of Kaliningrad soil. The authors show that the studied ecosystems differ in plant species diversity, types of soils, and physicochemical parameters, which must be taken into account when analyzing the soil microflora.

This article analyses the content of phenolic antioxidants and ascorbic acid in medicinal plants of 66 species from 31 families. The study identified palnt species with a maximum content of biologically active compounds (phenolic antioxidants and ascorbic acid) and high antioxidant activity. These plants can be used as a basis for the creation of innovative functional food products
that have high antioxidant activity.

The authors registered a high content of antioxidantive substances in Amaranthus and identified the dependence of the extract antioxidantive activity on the method and period of sample collection, as well as the method of extraction and storage period. The highest content of antioxidants was registered in water extracts in September. The most effective method of sample collection is obtaining extracts from dry leaves of Amaranthus and storing water solution for further use for not more than 5 months. The best period for plant collection is the phase of flowering.

A study into the content water-soluble antioxidants, ceruloplasmin and iron (III) in the blood serum in patients with alcohol abuse showed significant changes to the antioxidant system: an increase in the content of antioxidants and ceruloplasmin decreased and a decrease in that of iron (III). The authors focus on the gender-related differences: men exhibit greater changes in the content of antioxidants, whereas women in that of ceruloplasmin and iron (III).

The method of gas chromatography-spectrometry was used for the qualitative and quantitative identification of the composition of essential oil obtained from common yarrow growing in different soils in the climatic zone of the Kaliningrad region. The  authors established that, depending on the type of soil, the content of сhamazulene and other components in essential oil can vary across a wide oncentration range.

This article presents the results of research on the dynamics of cardiovascular system adaptation mechanisms in primary school pupils according to the indices of vegetative and myocardial of haemodynamic homeostasis.

This article claims that a decrease in the high frequency (62,5 %) of unfavourable outcomes of severe immune reconstitution inflammatory syndrome can be achieved through an adequate monitoring of HIV-infected patients consisting in early detection, treatment and prevention of coinfections and swift elimination of other risk factors.