[Ca2+]i	Intracellular calcium concentration
[Zn2+]i	Intracellular zinc concentration
•OH	Hydroxyl radicals
ADMA	Asymmetric dimethylarginine
Ca2+	Calcium
SMC	Smooth muscle cells
eNOS	Endothelial nitric oxide synthase
AHH	Acute hypobaric hypoxia
CHH	Chronic hypobaric hypoxia
CIHH	Chronic intermittent hypobaric hypoxia
H2O2	Peroxide
HIF	Hypoxia inducible factor
HIF 1α	Hypoxia inducible transcription factor 1 alpha
HAPH	High altitude pulmonary hypertension
iNOS	Inducible nitric oxide synthase
mPAP	Mean pulmonary artery pressure
MT	Metallothionein
MTF-1	Metal sensitive transcription factor
NADPH	Nicotinamide adenine dinucleotide phosphate
Nox	NADPH oxidase
NO	Nitric oxide
O2	Oxygen
O2•	Superoxide
ONOO	Peroxynitrite
OSA	Obstructive sleep apnea
PO2	Partial pressure of oxygen
PKC	Protein kinase C
PKCε	Protein kinase C epsilon
ROS	Reactive oxygen species
HPV	Hypoxic pulmonary vasoconstriction
ZIP	Zinc regulated, iron regulated transporter like protein
Zn2+	Zinc
Zn2+i	Intracellular zinc