The CRTH2 -466T>C polymorphism increases serum and cellular eotaxin-2 production through lowered CRTH2 expression, leading to eosinophilic infiltration in AERD patients.
The HNMT 939A>G polymorphism lowers HNMT enzymatic activity by decreasing HNMT mRNA stability, which leads to an increase in the histamine level and contributes to the development of AICU.
Our results suggest that IL-10 promoter polymorphisms contribute to the development of AIA and that rhinosinusitis may interact genetically with TGF-beta1.
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