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Oral iron supplementation ameliorated alterations in iron uptake and utilization in copper-toxic female Wistar rats.

OBJECTIVE: Women are more susceptible to both iron deficiency and copper toxicity due to monthly flow and estrogen action, respectively. Oral iron is beneficial for menstruating women and enhances erythropoiesis, but both deficiency and excess of copper impact iron absorption and mobilization. The aim of this study was to investigate the possibility of mitigating copper toxicity in female Wistar rats while supplementing with iron.

METHODS: 20 female rats (160-180g) were grouped into four: Groups 1 (Control) received 0.3mls normal saline, 2- copper-toxic (100m mg/kg Copper sulphate), 3- Copper-toxic+Iron (100 mg/kg Copper sulphate + 1 mg/kg Ferrous sulphate) and 4- Iron (1 mg/kg Ferrous sulphate). All treatment was administered orally for 5 weeks. Blood was collected retro-orbitally after light anesthesia into EDTA and plain bottles for hematological, serum copper, iron, ferritin and total iron binding capacity (TIBC) analysis. Liver was excised for copper and iron levels while bone marrow was harvested for myeloid/erythroid ratio. The data were analyzed by one-Way ANOVA and statistical significance was considered at p<0.05.

RESULTS: Iron supplementation significantly increased packed cell volume, hemoglobin concentration, red blood cell count and myeloid/erythroid ratio, compared to the copper-toxic group. Serum iron and TIBC were significantly increased while liver copper and iron levels reduced significantly in iron supplemented group compared to the copper-toxic group.

CONCLUSIONS: Oral iron supplementation mitigated alterations in iron absorption and mobilization following copper toxicity.

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