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- W1998578324 abstract "Deposition of free iron is a characteristic feature of beta-thalassemia (beta-thal) red blood cells believed to play an important role in the generation of oxidative injury to the cell membrane. Increased red blood cell KCI cotransport, reduced K content, and cell dehydration are also found in beta-thal red blood cells. It is not known, however, whether deposition of free iron plays a role in these membrane transport changes. To explore this issue, we studied-both in vitro and in vivo-the effect on KCI cotransport of removing red blood cell membrane free iron from beta-thal erythrocytes. Eleven patients with beta-thal major who underwent long-term transfusion and were treated with deferiprone (75 mg/kg/day) for 9 months participated in the study. Deferiprone therapy removed membrane free iron from beta-thal erythrocytes, which was followed by reduced KCI cotransport activity. The reduced KCI cotransport activity was accompanied by an increase in the red blood cell K content. These data suggest that the increased activity of KCI cotransport in beta-thal red blood cells is mediated by the deposition of membrane free iron, a mechanism that may be attenuated by deferiprone therapy." @default.
- W1998578324 created "2016-06-24" @default.
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- W1998578324 date "1999-01-01" @default.
- W1998578324 modified "2023-09-23" @default.
- W1998578324 title "Deferiprone therapy in homozygous human β-thalassemia removes erythrocyte membrane free iron and reduces KCl cotransport activity" @default.
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- W1998578324 doi "https://doi.org/10.1053/lc.1999.v133.a94241" @default.
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