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ZINC, THE TRACE ELEMENT ESSENTIAL IN LIVING ORGANISMS

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SOLÉ PASCUAL A., TYSZKA-CZOCHARA M., GDULA-ARGASIŃSKA J., LIBROWSKI T., GRZYWACZ A., OPOKA W.
Medicina Internacia Revuo
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2012
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vol. 25
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issue 99
55-59
EN
Zinc is a metallic element, of symbol Zn and atomic number 30, that is placed in the group 12 of the periodic table. As an essential trace element, zinc is required to support human biochemical processes. It is found in nearly 200 specific enzymes in the living organisms, and it also serves as structural cofactor for many cellular proteins. [1] Zinc may exert pleiotropic effects in organism; for that, deficits of cellular zinc content can have catastrophic consequences and are linked to major pathophysiology, such as diabetes, stroke and malformations of brain function [2]. The complexity and importance of zinc homeostasis is reflected by the large variety and number of zinc-related proteins found in almost every cell compartment; for example, this biometal is transported through ZnT (Zn2+ transporter) family and ZIP family, proteins that are completely dedicated to zinc transport [2]. It is also noticeable, that between three and ten percent of all protein products of genes in mammalian genomes bind zinc, which is essential for their folding, activity or conformational change [2].
2
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FATTY ACIDS PROFILE IN PHOSPHOLIPIDS OF THE ERYTHROCYTE MEMBRANES IN SWIMMING RATS

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GDULA-ARGASIŃSKA J., TYSZKA-CZOCHARA M., TELEGŁÓW A., DĄBROWSKI Z., PAŚKO P., LIBROWSKI T., GAWEŁ M., OLBERT M., LIPKOWSKA A.
Medicina Internacia Revuo
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2014
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vol. 26
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issue 102
19-23
EN
Alterations in membrane lipid composition, particularly fatty acids content is known to result in functional and structural changes. Dietary lipids and physical activity or stress play an important role in this change. It was of interest to study the influence of swimming in different temperatures on the content of fatty acids in the phospholipids of the erythrocyte membranes of rats. Our research demonstrated a significant influence of swimming on the content of fatty acids in the phospholipids of the erythrocyte membranes of rats. These changes of fatty acids, particularly the decrease of arachidonic acid and significant increase of saturated fatty acids in the phospholipids of the erythrocyte membranes in swimming rats may be induced by oxygen radicals generated in different kinds of stress.
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