AHS	American Headache Society
CB	Carotid body
CGRP	Calcitonin gene-related peptide
CH	Cluster headache
CVLM	Caudal ventrolateral medulla
CYP2E1	Cytochrome P450-2E1
eNOS	Endothelial nitric oxide synthase
ER	Endoplasmic reticulum
ETC	Electron transport chain
GWAS	Genome-wide association study
HIF	Hypoxia-inducible factor
IL-1β	Interleukin-1 beta
IL-6	Interleukin-6
iNOS	Inducible nitric oxide synthase
JNK	c-Jun N-terminal kinase
MAPK	Mitogen-activated protein kinase
NF-κB	Nuclear factor-kappa B
NTS	Nucleus tractus solitarius
PACAP38	Pituitary adenylate cyclase-activating polypeptide-38
PHD	Prolyl hydrolase domain enzyme
pO2	Partial pressure of oxygen
PVN	Paraventricular nucleus of the hypothalamus
ROS	Reactive oxygen species
RVLM	Rostral ventrolateral medulla
SCN	Suprachiasmatic nucleus
SDH	Succinate dehydrogenase
TLR4	Toll-like receptor 4
TNC	Trigeminal nucleus caudalis
VIP	Vasoactive intestinal peptide