eISSN: 1896-9151
ISSN: 1734-1922
Archives of Medical Science
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4/2010
vol. 6
 
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abstract:

Clinical research
Red cell alloimmunization and autoantibodies in Egyptian transfusion-dependent thalassaemia patients

Azza Mohamed Ahmed
,
Nehal Salah Hasan
,
Shadia Hassan Ragab
,
Sonia Adolf Habib
,
Nahed Abdelmonem Emara
,
Azza Ahmed Aly

Arch Med Sci 2010; 6, 4: 592-598
Online publish date: 2010/09/07
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Introduction: The objective of this study was to explore the frequency of red cell alloantibodies and autoantibodies among -thalassaemia patients who received regular transfusions.
Material and methods: This study included 501 patients with -thalassaemia. This work planned to study the presence of alloantibodies and autoantibodies to different red cell antigens in multitransfused thalassaemia patients using the ID. Card micro typing system.
Results: Of a total of 501 -thalassaemia patients included in the study, 11.3% of patients developed alloantibodies; 9.7% of these alloantibodies were clinically significant. The most common alloantibodies were anti-K, anti-E and anti-C. The rate of incidence of these alloantibodies was 3.9%, 3.3% and 1.7% respectively. Autoantibodies occurred in 28.8% of the patients and 22.1% of these antibodies were typed IgG. There was a significant association between splenectomy with alloimmunization and autoantibody formation (p = 0.03, p = 0.001 respectively). There was no significant association between alloantibody, autoantibody formation and number of transfused packed red cells.
Conclusions: Alloimmunization to minor erythrocyte antigens and erythrocyte autoantibodies of variable clinical significance are frequent findings in transfused -thalassaemia patients. There is an association between absence of the spleen and the presence of alloimmunization and autoantibody formation.
keywords:

b-thalassaemia, alloimmunization, autoantibodies

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