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Western Journal of Nursing Research
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*SELENIUM COMPOUNDS
*SELENIUM, ELEMENTAL
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Decreasing Effects of Iron Toxicosis on Selenium and Glutathione Peroxidase Activity

Wally J. Bartfay

School of Nursing, Queen’s University

Emma Bartfay

Department of Community Health and Epidemiology, Queen’s University

Heart failure due to chronic iron overload is a leading cause of cardiovascular mortality in the second and third decades of life worldwide, but its mechanism is not known. Deficiencies of selenium have been shown to result in damage to the myocardium and to the development of various cardiomyopathies. In the current investigation, the dose-dependent effects of chronic iron toxicosis on heart tissue concentrations of selenium and the protective antioxidant enzyme glutathione peroxidase (GPx) were investigated in a murine model of iron-overload cardiomyopathy (n = 20). Significant dose-dependent decreases in heart tissue selenium concentrations (r =-0.95, p <0.001) and selenium-dependent GPx activity (r =-0.93, p <0.001) were observed in chronically iron-loaded mice in comparison with placebo controls. These results suggest that dietary supplementation with selenium may be beneficial in the clinical management of disorders of iron metabolism.

Western Journal of Nursing Research, Vol. 24, No. 2, 119-131 (2002)
DOI: 10.1177/01939450222045789
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 Biol Res NursHome page
S. Crowe and W. J. Bartfay
Amlodipine Decreases Iron Uptake and Oxygen Free Radical Production in the Heart of Chronically Iron Overloaded Mice
Biol Res Nurs, April 1, 2002; 3(4): 189 - 197.
[Abstract] [PDF]