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Analysis of polymorphisms of TNF-α, LT-α, IL-10, IL-12 and CTLA-4 in patients with warm autoimmune haemolytic anaemia.

Abstract：

INTRODUCTION:Autoimmune haemolytic anaemia (AIHA) is defined as the increased destruction of red blood cells (RBCs) in the presence of anti-RBC autoantibodies and/or complement. Its pathogenesis is multifactorial and includes changes in mechanisms of cytokine production and functionality. A number of recent studies have implicated cytokines polymorphisms in the pathogenesis of autoimmune diseases. The aim of this study was to determine the frequency of polymorphisms of tumour necrosis factor alpha (TNF-α), lymphotoxin-α (LT-α), interleukin 10 (IL-10), interleukin 12 (IL-12) and cytotoxic T-lymphocyte antigen-4 (CTLA-4) in patients with AIHA in comparison with healthy individuals. METHODS:The study population consisted of 17 patients with AIHA and 40 healthy controls. The polymorphisms for TNF-α-308, LT-α +252, IL-10 -592, IL-12 +1188 and CTLA-4 +49 were examined by polymerase chain reaction followed by specific restriction enzyme digestion. RESULTS:There was no significant difference in the phenotypic distributions of polymorphisms of the TNF-α, IL-10, IL-12 and CTLA-4 between the patients and controls. Compared with healthy controls, patients with AIHA had a significant higher frequency of LT-α (+252) AG phenotype (41%vs. 13%; P = 0.032). CONCLUSION:In this study, no significant differences on the frequency of TNF-α, IL-10, IL-12 and CTLA-4 polymorphisms between patients with AIHA and controls was found, suggesting that the targeted polymorphisms do not influence on the emergence and evolution of the disease. However, the LT-α +252 polymorphism might have an effect for AIHAI development, suggesting that further studies are necessary to clear up this question.

journal_name

Int J Lab Hematol

journal_title

International journal of laboratory hematology

authors

D'Abronzo LS,Barros MM,Bordin JO,Figueiredo MS

doi

10.1111/j.1751-553X.2012.01400.x

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

356-61

issue

4

eissn

1751-5521

issn

1751-553X

journal_volume

34

pub_type

杂志文章

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