A1AT	α-1 antitrypsin
Akt	Protein kinase B
Bad	Bcl-2-associated death promoter
BAL	Broncho alveolar lavage
Bax	BCL2-associated X protein
BbCI	Bauhinia bauhinioide scruzipain inhibitor
BmTI-6-D1	Kunitz-type serine protease inhibitor 6 Recombinant Protein Domain 1
CB	Chronic bronchitis
CE/CSE	Cigarette smoke extract
COPD	Chronic obstructive pulmonary disease
CXCL 12	C-X-C motif chemokine 12
CXCR1	C-X-C chemokine receptor type 1
DPP IV	Dipeptidyl peptidase IV
eNOS	Endothelial nitric oxide synthases
FcγRIIIb	Fcγ receptor IIIb
FEV1/VC	Forced expiratory volume (first second)/vital capacity.
H2O2	Hydrogen peroxide
IFN-γ	Interferon gamma
IL-1	Interleukin 1
IL-18	Interleukin 18
IL-1β	Interleukin 1 beta
IL-8	Interleukin 8
iNOS	Inducible nitric oxide synthase
Lm	Mean linear intercept
LPS	Lipopolysaccharide
MCP-1	Monocyte chemoattractant protein 1
MMP	Matrix metalloproteinase
NaHS	Sodium hydrosulfide
NE	Neutrophil elastase
NLRP3	NACHT, LRR and PYD domains-containing protein 3
P2X7	P2X purinoceptor 7
PAH	Pulmonary arterial hypertension
PF	Pulmonary fibrosis
PPE	Porcine pancreatic elastase
PR3	Proteinase 3
rBbKI	recombinant Bauhinia bauhinioides Kallikrein proteinase Inhibitor
RLV	Relative lung volumes
RVH	Right ventricular hypertrophy
SLPI	Secretory leukocyte protease inhibitor
Smad	Mothers against decapentaplegic homolog transcription factor
TGF-β	Transforming growth factor beta 1
TNFα	Tumor necrosis factor-alpha
VL	Lung volumes
WT-elafin	Wild type elafin