Balaban R. The adaptive role of transaminases and glutamatdehydrogenases in freshwater fish and mollusc organisms under the influence of heavy metals. - Manuscript.

There was investigated the influence of enhanceable concentrations (2 and 5 МРС) of heavy metals (zinc, manganese, copper and lead) in water environment on their accumulation and change of activity of transamination and oxidative desamination enzymes in tissues of carp Cyprinus carpio L. and freshwater mollusc Unio pictorum L. There was detected an increase of heavy metals content in carp and mollusc tissues, in specific cases from 5 to 12 times relative to the control group. It was demonstrated that one of the important factors that determines metabolic pattern in hydrobionts organism under the influence of heavy metals is the level of enzymes (transaminases and glutamatdehydrogenases) functional activity. The role of above mentioned enzymes in adaptation of fish and mollusc to modification of their invironment, particularly, the intoxication by heavy metals was proved.