Vitamin E correlates inversely with non-transferrin-bound iron in sickle cell disease

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Decreased serum vitamin E levels are found in homozygous sickle cell disease (SCD). Excessive transfusions may lead high non-transferrin-bound iron (NTBI). Hypothesizing a relationship between the two, vitamin E (measured using high performance liquid chromatography) was significantly lower in 30 SCD patients than in 30 age-/sex-matched controls (P < 0·001), but NTBI (bleomycin assay) was higher (P < 0·001). Vitamin E was lower in 10 transfused patients than in 20 non-transfused patients (P < 0·001) with a significant inverse correlation between the NTBI and vitamin E (r = −0·58, P < 0·001). NTBI associated with iron overload in SCD may increase the potential for oxidative damage and low vitamin E activity may compound this effect.

Keywords: NTBI; antioxidant activity; sickle cell disease; vitamin E

Document Type: Research Article

Affiliations: 1: Department of Haematology, City Hospital Trust, Birmingham, and 2: School of Health Sciences, University of Wolverhampton, UK

Publication date: September 1, 2001

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