Liver T2 values were found to be more accurate than serum ferritin in predicting liver iron overload and were not influenced by the presence of chronic hepatitis C. Therefore, MRI could serve as a noninvasive alternative to liver biopsy for the quantification of hemosiderosis in HCV+ patients with thalassemia.
Iron overload resulted in increased urinary levels of the lysosomal enzyme NAG which has been proposed as an early marker of kidney damage. Reduction of iron load, achieved by regular desferrioxamine infusion, resulted in normalisation of the urinary enzyme levels. Thus kidney lysosomes appear to be a target and possibly a mediator of iron toxicity in this tissue.
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