Preferential expression of matrix metalloproteinase-9 in mouse skin after sulfur mustard exposure

Matrix metalloproteinases (MMPs), a class of enzymes responsible for the degradation of extracellular matrix proteins, play important roles in inflammatory and immune responses. In skin, MMP-2 (gelatinase A) and MMP-9 (gelatinase B) are normally inactive but can be expressed during tissue injury. Both degrade collagen IV and other critical components of the basement membrane zone that separates the epidermis from the dermis. The expression of...