Cytogenetic indicators in estimation of environmental state

Practical aspects of the application of cytogenetic indicators during the analysis of the environmental state are considered in the article. Cytogenetic characteristics of the Nothobranchius rachovii fish species (proposed as a test object) are presented.     

Nanocrystaline ceria based materials--perspectives for biomedical application

Nanocrystalline ceria possesses a unique complex of physical and chemical properties making it highly bioactive material. In this review, modern data on the action of nanocrystalline ceria on cells, micro- and macroorganisms are analyzed. Special attention is paid to the analysis of the factors affecting protective properties of CeO2 with respect to the living systems.     

Study of developmental homeostasis in natural populations. Health of environment concept: Methodology and practice of estimation

Increasing anthropogenic impact on the natural environment determines the urgency and significance of provision of the all-round estimation and monitoring of its consequences. The methodology of the health of environment estimation based on characteristics of the condition of different species of living beings by the developmental homeostasis is proposed as an operational approach for this problem solution. The elaborated methodology approbation during the execution of a number of the projects on the estimation of the environmental quality under different types of the anthropogenic impact allows one to characterize the possibilities of used approaches for estimation of the environment’s auspiciousness for living beings and humans. This also opens up the possibility to estimate the range of possible changes of the developmental homeostasis in real natural conditions.     

Nanocrystalline ceria based materials—Perspectives for biomedical application

Nanocrystalline ceria possesses a unique complex of physical and chemical properties making it highly bioactive material. In this review, modern data on the action of nanocrystalline ceria on cells, micro- and macroorganisms are analyzed. Special attention is paid to the analysis of the factors affecting protective properties of CeO₂ with respect to the living systems.     

Evaluation of genetic homeostasis in animals at different stages of ontogenesis in the environment

Modern methods of genetic homeostasis assessment in animals are described in the present article. The single gel-electrophoresis test (Comet Assay), micronuclei test, chromosome aberration frequency, and sister chromatid exchanges are reviewed in detail. The questions of test-sensitivity of given methods and principles or their application for genetic homeostasis assessment in wild populations of animals are considered.     

Karyotypes of three Garra species from Ethiopia

Three cyprinid species from Ethiopia, Garra dembeensis, G. makiensis , and G. quadrimaculata , were found to be characterized by the chromosome numbers (2n) of 50 and by the arm numbers of 82, 84, and 88, respectively.     

Effect of nanoparticles on aquatic organisms

This paper summarizes the data on the effect of engineered nanoparticles on aquatic organisms. The issues of penetration and accumulation of nanoparticles in the body of aquatic organisms and their toxic effect, biotransformation, and migration along food webs are considered. It is demonstrated that the behavior of nanomaterials in the environment and their effect on living organisms have been studied insufficiently and require close attention, because their release into the environment will increase in the very near future.