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THE ROLE OF ERYTHROCYTE MEMBRANE LIPIDS IN FORMING RESISTANCE OF FISH TO THE ACTION OF ZINC IONS

Yu. I. Senyk, V. O. Khomenchuk, V. Z. Kurant, V. V. Grubinko

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Ternopil Volodymyr Hnatyuk National Pedagogical University, department of chemistry

Maxim Krivonosa str., 2, Ternopil, 46027, Ukraine

The diagnosis of pathological changes in animals populations under unfavorable factors has been a burning problem of modern biological science. Metal ions play a specific role in this case. When getting into hydro ecosystems they possess expressed injuriousness.

Some of the main targets of pollutants are membranes of erythrocyte, that is why their structural rebuilding is one of the important mechanism of regulation of the ingress of metals into the cell. The obtained data may also be used for the characteristics of their toxic resistance.

The have been investigated the changes of phospholipid content in the membranes of carp erythrocyte (Cyprinus carpio L.) and pike (Esox lucsus L.) under the influence of elevated concentrations of zinc ions. Found that the observed changes of zinc total lipid content, non-polar lipid and individual fractions of phospholipids: phosphatidylcholine, lysofosfatydylholine, phosphatydyletanolamine, phosphatidylserine, phosphatidylinositol, sphingomyelin and their value.

Over exposure of 0.5 mg/dm3 of zinc ions in erythrocytes pike Activation of phospholipid synthesis and reduction of CL and TAG. These changes indicate a decrease in membrane micro viscosity and increasing role in the regulation of PL membrane permeability for ions of the metal. Instead of 2 mg/dm3 for metal accumulation observed TAG, CM and growth ratio CL/PL, which increases the density of the membrane and thus reducing its permeability. Although the role of adaptive PEA, its significant savings while hydrolysis PC contributes to its appearance on the outer layer of the membrane of red blood cells, resulting in an increase in its permeability.

Keywords: RED BLOOD CELLS, MEMBRANES, BLOOD, NONPOLAR LIPIDS, PHOSPHOLIPIDS, CARP, PIKE, ZINC, TOKSYKOREZYSTENTNIST, ADAPTATION


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