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M Worwood, SJ Cragg, AM Williams, M Wagstaff and A Jacobs
Ferritin was purified 33,000-fold from the plasma of patients with
idiopathic hemochromatosis. The plasma ferritin was labeled with 131I and
injected into 2 normal men. Clearance was found to be relatively slow, with
50% 131I-ferritin remaining in the plasma at 27-30 hr. The fraction of
plasma ferritin that bound to concanavalin-A was found to be cleared more
slowly than the nonbinding fraction. These findings confirm our previous
suggestion that glycosylation is a major factor prolonging the survival of
ferritin in the plasma, but differ from the results of earlier studies in
experimental animals and preterm infants, which indicated very rapid plasma
ferritin turnover.
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| Copyright © 1982 by American Society of Hematology Online ISSN: 1528-0020 | |||||||||