چکیده انگلیسی:
Introduction: Allergic Rhinitis (AR) is a common inflammatory disease of the nasal mucosa. The CD14 is a receptor for lipopolysaccharide and inhaled endotoxin which can stimulate the production of interleukins by antigen presenting cells. Accordingly, CD14 plays an important role in allergic and atopic diseases, which can be one of the etiological factors for allergic diseases. The present study investigated the association between the CD14 gene polymorphism C-159T and AR and aimed to detect the correlation between serum levels of CD14 and AR. Materials and Methods: This study was conducted on two groups of participants. The experimental group consisted of 125 patients with AR referring to Ghaem Hospital, Mashhad University of Medical Sciences in Mashhad, Iran, and the control group included 125 healthy subjects from Mashhad National Blood Center, Iran. Serum CD14 levels were measured by enzyme-linked immunosorbent assay. Polymerase chain reaction-restriction fragment length polymorphism was employed to detect C-159T gene polymorphism in the CD14 promoter region.
Results: There was a significant association between CD14 C-159T gene polymorphism and AR (P<0.001). The results of the statistical analysis showed that the TT genotype could significantly increase the risk of AR (P<0.001). Additionally, a significant association was observed between C-159T gene polymorphism and the serum level of CD14 (P<0.001). Regardless of the genotypes, the serum CD14 levels were significantly higher in AR patients than in those of the participants in the controls (P=0.007).
Conclusions: According to the obtained results of this study, CD14 in serum might be a potential marker for the diagnosis of AR, and in genetic levels it might be a predictive factor for the disease.
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