COPD	chronic obstructive pulmonary disease
CRP	C-reactive protein
CXCR2	CXC-chemokine receptor 2
ECM	extracellular matrix
EMT	epithelial-mesenchymal transition
IFN-γ	interferon-γ
IL	interleukin
LPS	lipopolysaccharide
mCM	macrophage conditioned media
MMP-9	matrix metalloproteinase-9
MT-1 MMP	membrane type-1 matrix metalloproteinase
PDGF	platelet-derived growth factor
PHMG	polyhexamethylene guanidine
α-SMA	α-smooth muscle actin
TIMP	tissue inhibitor of metalloproteinases
TNF-α	tumor necrosis factor-α