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  • Title: Soluble HLA-G and HLA-A,-B,-C serum levels in patients with allergic rhinitis.
    Author: Ciprandi G, Colombo BM, Contini P, Cagnati P, Pistorio A, Puppo F, Murdaca G.
    Journal: Allergy; 2008 Oct; 63(10):1335-8. PubMed ID: 18782112.
    Abstract:
    BACKGROUND: Allergic rhinitis (AR) is characterized by Th2-polarized immune response. Soluble HLA (sHLA) molecules play an immunomodulatory activity. So far, however, no study investigated them in AR. OBJECTIVE: The aim of this study was to evaluate sHLA-G and sHLA-A,-B,-C serum levels in AR patients with pollen allergy and in a group of healthy controls. METHODS: Forty-nine AR patients were enrolled. A group of healthy nonallergic subjects was considered as control. sHLA-G and sHLA-A,-B,-C serum levels were determined by immunoenzymatic method. The study was conducted during the winter, such as outside the pollen season. RESULTS: Allergic patients had significantly higher levels of both sHLA-G (P < 0.0001) and sHLA-A,-B,-C (P = 0.011) molecules than normal controls. Moreover, there was a significant relationship between these two soluble molecules (r = 0.69) in allergic patients. CONCLUSION: The present study provides the first evidence that both sHLA-G and sHLA-A,-B,-C serum levels are significantly increased in AR patients with pollen allergy.
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