α-SMA	α-smooth muscle actin
ACE	angiotensin converting enzyme
ACEIs	angiotensin converting enzyme inhibitors
Ac-SDKP	N-acetyl-seryl-aspartyl-lysyl-proline
ADAM17	tumor necrosis factor-α-converting enzyme (TACE)
ALI	acute lung injury
Ang	angiotensin
APA	aminopeptidase A
APM	aminopeptidase M
ARBs	angiotensin II type 1 receptor blockers
ARDS	acute respiratory distress syndrome
AT1R	angiotensin II type 1 receptor
AT2R	angiotensin II type 2 receptor
BAL	bronchoalveolar lavage
BLM	bleomycin
CATA	cathepsin A
CINC-3	cytokine-induced neutrophil chemoattractant 3
COPD	chronic obstructive pulmonary disease
CxA	carboxypeptidase A
CXCL5	C-X-C motif chemokine 5
DABK	des-Arg9-bradykinin
DOCA	deoxycorticosterone acetate
FiO2	fraction of inspired oxygen
GM-CSF	granulocyte-macrophage colony-stimulating factor
HD	high dose
ICU	intensive care unit
IL	interleukin
i.p.	intraperitoneally
i.v.	intravenously
KC	C-X-C motif chemokine 1
LD	low dose
LPS	lipopolysaccharide
mACE2	membrane-bound angiotensin converting enzyme 2
MasR	Mas receptor
MCP-1	monocyte chemoattractant protein-1
MIP2	macrophage inflammatory protein-2
MLDAD	mononuclear leukocyte-derived aspartate decarboxylase
MrgD	Mas-Related G-Protein Coupled Receptor D
NEP	neprilysin
PaCO2	partial pressure of carbon dioxide
PaO2	partial pressure of oxygen
POP	propyl oligopeptidase
PKC-δ	protein kinase C-δ
RAS	renin–angiotensin system
rhACE2	recombinant human angiotensin converting enzyme 2
sACE2	soluble angiotensin converting enzyme 2
s.c.	subcutaneously
T2D	type 2 diabetes mellitus
TACE	tumor necrosis factor-α-converting enzyme (ADAM17)
TGF-β1	transforming growth factor β1
TLR	toll like receptor
TMPRSS2	transmembrane protease serine 2
TNF-α	tumor necrosis factor-α
WBC	white blood cells