The effect of dietary selenium supplementation on cadmium absorption and retention in suckling rats (CROSBI ID 149990)
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Lazarus, Maja ; Orct, Tatjana ; Jurasović, Jasna ; Blanuša, Maja
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The effect of dietary selenium supplementation on cadmium absorption and retention in suckling rats
Selenium (Se) reduces cadmium (Cd) toxicity in adult animals, but its effects in newborn animals are still unknown. This study investigated Cd (as CdCl2) absorption, distribution, and retention in suckling rats receiving oral Se supplementation (as Na2SeO3) in equimolar doses (8 μ mol Cd and/or Se per kg b.w./day). Selenium was given either before and during Cd exposure (Sepre+Cd group ; pre-treatment group) or only during Cd exposure (Se+Cd group). Rats were treated from postnatal day (PND) 6 to 14 as follows: controls (H2O, PND 6-14), Se (PND 10-14), Cd (PND 10-14), Sepre+Cd (Se PND 6-14 + Cd PND 10-14) and Se+Cd (Se + Cd PND 10-14). Selenium supplementation, especially pre-treatment, decreased Cd levels in the blood, brain, liver and kidney of suckling rats and Cd excretion. Selenium levels in plasma, brain, and kidney also decreased. These findings suggest that higher Se intake could efficiently reduce Cd retention during the suckling period.
cadmium; interaction; selenium; suckling rat; trace elements
Published online: 5 June 2009 (Springer Link)
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