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HLA-G 14 bp insertion/deletion polymorphism and its association with sHLA-G levels in Behçet's disease Tunisian
K Sakly1, M Maatouk1, S Hammami2
1Faculty of Pharmacy, Research Unit 03/UR/07 "Autoimmunity and Allergy", University of Monastir, Tunisia.
Abstract:
The purpose of this study was to investigate the HLA-G 3'UTR 14 bp polymorphism and sHLA-G levels in Tunisian patients with BD. The study included 119 patients with BD and 170 healthy blood donors (HD). HLA-G 14 bp polymorphism was genotyped by polymerase chain reaction. Serum levels of soluble HLA-G (sHLA-G) were measured using a commercial ELISA kit. A significant increased frequency of the -14 bp HLA-G allele was detected in patients with BD compared to HD (0.58 vs 0.49, p=0.023), and a significant increased frequency of HLA-G -14/-14 bp was observed in patients with BD compared to HD [0.37 vs 0.22, p=0.007, OR 2.04 (95% CI 1.21-3.42)]. The mean plasmatic concentration of sHLA-G levels were significantly increased in patients with active disease [231.63±286.4 U/mL] compared to those with inactive disease (103.14±77.8 U/mL, p=0.03) and HD (121.41±24.1 U/mL, p=0.04). Furthermore, our results showed that there is no association between HLA-G 14 bp polymorphism and sHLA-G plasma levels.
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