Seasonal dynamics of products of lipid peroxidation in liver of bank vole (Myodes glareolus) under conditions of environmental pollution by heavy metals

Abstract

The presented research involves the integral assessment of biochemistry indexes of nature populations of voles under conditions of environmental pollution by heavy metals. The raised content of mobile forms Pb, Cd, Cr, Ni and Co in soils was revealed оn distance of 500 m to the South-West from Tripillya Thermal Power Plant (TPP) (Kyiv region, Ukraine). That’s considerably (up to 3–5 times) exceeds levels on territory of Kaniv Nature Reserve (Cherkassy region, Ukraine). Territory of National Nature Park «Holosiivsky» (Kyiv, Ukraine) characterized by rather increased content of active form of investigated heavy metals especially Pb. Increase of the concentration of diene conjugates (up to 7–10 times) and thiobarbituric acid (TBA) active compounds (up to 2–3 times) in bank vole (Myodes glareolus) liver polluted by heavy metals has been discovered. Insignificant increasing of content of Schiff basis in liver homogenate of voles in region of impact of Tripillya TPP (in 2 times in spring and in summer, in autumn – in 3 times) was detected. Seasonal dynamics of the maintenance of lipid peroxidation has been revealed. The registered changes of biochemical indicators can be an indicator of ecological-biochemical stress in an organism of the bank vole in the district of influence of Tripillya TPP.