1. Iron-overloaded spleens from thalassaemic subjects showed a greatly increased susceptibility to free-radical oxidation (peroxidation) in vitro. 2. Iron content was the main but not the only variable governing susceptibility. Added ascorbate had a dose-dependent action either as an antioxidant or as a pro-oxidant, the direction of its effect depending mainly on the degree of iron overload. This has therapeutic implications.
Transient massive proteinuria following cardiopulmonary bypass surgery was observed. It was characterized and attributed to post-operative gelofusine infusion. Gelofusine was found to interfere with dye binding but not immunochemical assays of proteinuria. Proteinuria following gelofusine infusion may not reflect underlying glomerular pathology.
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