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English Abstract
Journal Article
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[Pathophysiology and treatment of sickle-cell disease].
Nederlands Tijdschrift Voor Geneeskunde 2005 May 22
Sickle-cell disease is a hereditary haemoglobinopathy caused by a mutation in the beta-globin gene. The disease is characterised by recurrent vaso-occlusive crises resulting in severe organ damage and a sharply reduced life expectancy. The formation of haemoglobin-S polymers in hypoxic conditions plays a pivotal role in sickle-cell disease and produces the characteristic phenotype of sickle-shaped erythrocytes that promote vasoocclusion. Endothelial cell activation, enhanced erythrocyte and leukocyte adhesion, vasoconstriction and coagulation activation play an important role in vaso-occlusive crises. Treatment of pain and hydration remain the main interventions in the management ofvaso-occlusive crises. Hydroxyurea has been shown to prevent vaso-occlusive crises by increasing the amount of foetal haemoglobin. Allogeneic stem-cell transplantation is the only curative therapy. However, transplantation-related mortality, graft-versus-host disease and the limited availability of HLA-identical donors restrict this therapeutic option.
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