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Vitamin E protective effects on genomic and cellular damage caused by paediatric preventive supplementation for
Rocío Celeste Gambaro1, Analía Seoane1, Gisel Padula1,2
1IGEVET, Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata1900, Argentina.
Insights
Daily iron supplementation may harm cell viability and increase oxidative stress, unlike weekly iron. Vitamin E may mitigate these adverse effects, offering a safer approach to preventing iron deficiency anaemia.
Area of Science:
- Biochemistry
- Hematology
- Cell Biology
Background:
- Iron deficiency is a primary cause of anemia, with high prevalence in Argentina.
- Current pediatric recommendations include daily ferrous sulfate supplementation for anemia prevention.
- Potential risks of excess iron, such as oxidative stress and cytomolecular damage, are a concern.
Purpose of the Study:
- To evaluate the in vitro effects of daily versus weekly ferrous sulfate supplementation combined with vitamin E.
- To assess impacts on cell viability, oxidative stress, and genomic damage in peripheral blood cultures.
Main Methods:
- In vitro culture of peripheral blood cells.
- Experimental groups included controls, vitamin E alone, weekly ferrous sulfate with vitamin E, and daily ferrous sulfate with vitamin E.
- Measurements included cell viability, reactive oxygen species, lipid peroxidation, and cytomolecular damage.
Main Results:
- Daily ferrous sulfate significantly decreased cell viability and increased oxidative stress markers compared to weekly supplementation.
- Excess iron from daily supplementation was linked to increased reactive oxygen species, lipid peroxidation, and genomic damage.
- Vitamin E demonstrated a potential to reduce ferrous sulfate-induced oxidative stress and DNA damage.
Conclusions:
- Daily ferrous sulfate supplementation poses risks of reduced cell viability and increased oxidative/genomic damage.
- Weekly ferrous sulfate supplementation appears safer and effective for preventing anemia.
- Vitamin E may serve as a protective agent against iron-induced cellular damage.
Abstract:
Iron deficiency is the leading cause of anaemia. In Argentina, the prevalence of anaemia and iron deficiency is very high; for that reason, the Argentine Society of Pediatrics recommends daily ferrous sulphate supplementation as a preventive treatment strategy. Alternatively, weekly ferrous sulphate supplementation has also been shown to be effective for anaemia prevention. Excess iron could be related to oxidative stress, which may in turn cause cytomolecular damage. Both can be prevented with vitamin E supplementation. We evaluated the effect of both daily and weekly ferrous sulphate supplementation combined with two doses of vitamin E on cell viability, oxidative stress and cytomolecular damage in peripheral blood cultured in vitro. The experimental design included the following groups: untreated negative control, two vitamin E controls (8·3 and 16·6 µg/ml), weekly ferrous sulphate supplementation (0·55 mg/ml) with each vitamin E dose, daily ferrous sulphate supplementation (0·14 mg/ml) with each vitamin E dose and a positive control. Daily ferrous sulphate supplementation decreased cell viability and increased the levels of reactive oxygen species, lipid peroxidation and cytomolecular damage (P < 0·5) compared with the weekly supplementation, probably due to the excess iron observed in the former. Vitamin E seemed to reduce ferrous sulphate-induced oxidative stress and genomic damage.
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