The expression of MMP‐2, MMP‐7, MMP‐9, and TIMP‐1 in chronic rhinosinusitis and nasal polyposis

Abstract

Different regulation type of activation of MMPs has been found in these two diseases. If MMP-2 expression is intense in the mucosa, then this ends with polyp formation; if MMP-7 expression is intense, it ends with CRS or stays as CRS.