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  • Title: Effect of enhanced iron chelation therapy on glucose metabolism in patients with beta-thalassaemia major.
    Author: Farmaki K, Angelopoulos N, Anagnostopoulos G, Gotsis E, Rombopoulos G, Tolis G.
    Journal: Br J Haematol; 2006 Aug; 134(4):438-44. PubMed ID: 16822284.
    Abstract:
    Recently introduced chelation regimens that combine deferoxamine (DFO) and deferiprone have been shown to have greater efficacy in promoting iron excretion than either chelator alone and have been associated with rapid reduction of the iron load in the heart and liver, and with reversal of cardiac dysfunction. It is unclear whether this combined therapy could be associated with a reduction in iron load or decline in the severity of iron-induced endocrinopathies. Starting in January 2001, 42 patients with beta-thalassaemia major, previously maintained on subcutaneous DFO only, were switched to combined treatment with DFO and deferiprone. The primary endpoint was to investigate the effects of this therapy on the glucose metabolism characteristics of this population. Combination therapy markedly decreased ferritin levels (638 +/- 1345 vs. 2991 +/- 2093 microg/l, P < 0.001). Glucose responses were improved at all times during an oral glucose tolerance test, particularly in patients in early stages of glucose intolerance. Glucose quantitative secretion also decreased significantly with combined therapy, while no significant change occurred in insulin levels in any group. Insulin secretion, according to the homeostasis assessment model, markedly increased in all groups, while overall reduction in insulin sensitivity did not reach statistical significance. This study showed that the combination of DFO and deferiprone was associated with an improvement in liver iron deposition and glucose intolerance.
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