Document Detail


High frequency of autoimmunization among transfusion-dependent Tunisian thalassaemia patients.
MedLine Citation:
PMID:  21889408     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Limited data are available on the frequency of RBC alloimmunization and autoimmunization in transfusion-dependant Tunisian β thalassaemia patients. MATERIALS AND METHODS: We analyzed the clinical and transfusion records of 130 patients (57 females and 73 males; mean age 119months; range 12-11months) with β thalassaemia major and who had regular blood transfusions for periods ranging from 12 to 311months. RESULTS: Of the 130 patients, ten (7.7%) developed RBC alloantibodies. The most common alloantibodies were directed against antigens in the Rh systems. Erythrocyte-autoantibodies as determined by a positive direct antiglobulin Coombs test, developed in 52(40%) patients with and without underlying RBC alloantibodies, thereby causing autoimmune haemolytic anaemia in eleven patients (21%). CONCLUSIONS: Autoimmunization to erythrocyte antigens is a frequent complication in patients with β thalassaemia major. Several factors might have contributed to the high autoimmunization rate observed in this study, including non phenotypic blood exposure and alloantibody formation prior to positive Coombs test.
Authors:
N Guirat-Dhouib; M Mezri; H Hmida; F Mellouli; H Kaabi; M Ouderni; B Zouari; S Hmida; M Bejaoui
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-8-31
Journal Detail:
Title:  Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis     Volume:  -     ISSN:  1473-0502     ISO Abbreviation:  -     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-9-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101095653     Medline TA:  Transfus Apher Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier Ltd. All rights reserved.
Affiliation:
Service d'immuno-hématologie pédiatrique, Centre National de Greffe de moelle osseuse 2, rue Djebel Lakhdar, Bab Saadoun 1006 -Tunis-Tunisie.
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