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At least 253 records · Page 14Linked to original sources
PubMed1988

Ocular siderosis.

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Cataract↗
PubMed1999

Assessment of iron stores in children with transfusion siderosis by biomagnetic liver susceptometry.

To investigate the applicability of noninvasive Superconducting Quantum Interference Device (SQUID) biomagnetic liver susceptometry and its limitations in thalassemic children, 23 patients with beta-thalassemia major and other iron loading anemias (age: 4-16 years) and 16 age-related normal children were studied. Liver iron concentrations ranged from 600 to 11,000 microg/g(liver) for thalassemic patients and from 60 to 340 microg/g(liver) for normal patients. Measuring the respective organ volumes by sonography, liver and spleen iron stores, accounting for 80% of total body iron stores, were estimated. Nonliver contributions from the lung or intestine to the measured SQUID signals in the small-sized patients were not observed. Moreover, livers in thalassemia were found to be enlarged by 18% per 1,000 microg/g (r = 0.75, P < 10(-3)). Serum ferritin values correlate significantly with iron stores (r = 0.64, P < 10(-3)), but predict iron stores only within large error intervals of 4,000 microg/g(liver). Analyzing the experimental data from biomagnetometry and from related transfusion and chelation treatment data within the framework of a two-compartment model, we were able to derive additional information on total body iron elimination and chelation therapy efficacy. The exponential decline of iron stores allows forecast of steady-state conditions of the final iron load for a particular transfusion and chelation therapy regimen.

Adolescent↗
PubMed1993

Azidothymidine (AZT)-induced siderosis.

Azidothymidine (AZT) interferes with heme synthesis. This should upregulate the synthesis of transferrin receptors and increase the amount of iron taken up by the cell. We found a 50% increase in the iron content of liver and a 20% increase in the iron content of macrophages in AZT-treated mice.

Animals↗