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EN
The paper describes sources of lead emission and problems connected with determination of lead exposition in regions of ecological danger and at the workplace. Toxic effects which accompany elevated blood lead levels on human organism, with an emphasis on lead action in children, were discussed. National and WHO recommendations to population either environmentally or occupationally exposed to lead were presented. Data from the Raport of Toxicological Commission of the Sanitary and Toxicological Council in Poland were used.
EN
Work presents current views on involvment of free radicals in inhibition of development of artriosclerosis by calcium (ACa).The importance of other substances, which interferes with calcium ions can contribute to the inhibiton of arteriosclerosis development.
EN
Paper describes selenium metabolism and its function in physiological and pathological states. A role of selenium in development of human internal pathology with its action in suppressing the carcinogenesis is outlined. Function of selenium in biochemical structures is showed with a special stress put on glutathione peroxidase.
EN
The work presents current views of free radicals and their role in medicine.In the first part, the chemical nature of free radicals, their reactions in cells and its consequences are discussed.The second part deals with a role of free radicals in human pathology with a special stress put an arteriosclerotic process.In the third part, the defense mechanism against free radical action, partcularly the importance of supeoxide dismutase.
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