ABC	ATP-binding cassette
AD	atopic dermatitis
AHR	aryl hydrocarbon receptor
AHRR	AHR repressor
ARNT	aryl hydrocarbon receptor nuclear translocator
ARTN	artemin
BaP	benzo(a)pyrene
Bcl-2	B-cell lymphoma 2
Bcl-xL	B-cell lymphoma-extra large
CAR	constitutive androstane receptor
CBP	CREB-binding protein
CCR7	C-C chemokine receptor 7
CDC	cell division cycle protein homolog
CER	ceramide
CREB	cAMP response element-binding protein
COX2	cyclooxygenase 2
CYP	cytochrome P450
DAMP	damage-associated molecular pattern
DDT	dichlorodiphenyltrichloroethane
DEP	diesel exhaust particle
DEPH	di-2-ethylhexyl phthalate
DMBA	7,12-dimethylbenz[a]anthracene
FA	fatty acid
FICZ	6-formylindolo[3,2-b] carbazole
FLG	filaggrin
FXR	farnesyl X receptor
GM-CSF	granulocyte-macrophage colony-stimulating factor
GST	glutathione S-transferase
HEE	human epidermal equivalent
HMGB1	high mobility group box 1
HNRN	hornerin
Hsp90	heat shock protein 90
8-OHdG	8-hydroxydesoxyguanosine
IFN	interferon
IL	interleukin
ITE	2-(1′H-indole-3′-carbonyl)-thiazole-4-carboxylic acid methyl ester
iNOS	inducible nitric oxide synthase
IV	ichthyosis vulgaris
IVL	involucrin
KC	keratinocyte
KRT	keratin
LC	Langerhans cell
LCE	late cornified envelop
LPS	lipopolysaccharide
LOR	loricrin
LXR	liver X receptor
MDR	multidrug resistance protein
MRP	multi resistance-related protein
NADPH	nicotinamide adenine dinucleotide phosphate
NCoR/SMRT	nuclear receptor co-repressor
NF-B	nuclear factor kappa-light-chain-enhancer of activated B-cells
NHR	nuclear hormone receptor
NMF	natural moisturizing factor
NOx	nitrogen oxides
NQO1 NADPH	quinone oxidoreductase 1
NRF2	nuclear factor (erythroid-derived 2)-like 2
O3	ozone
OR	odds ratio
PAH	polycyclic aromatic hydrocarbon
PCB	polychlorinated biphenyl
PG	prostaglandin
PPAR	peroxisome proliferator-activated receptor
PUFA	polyunsaturated fatty acid
PXR	pregnane X receptor
ROS	reactive oxygen species
RXR	retinoid X receptor
SNP	single-nucleotide polymorphism
STAT	signal transducer and activator of transcription
SOCS	suppressor of cytokine signaling
SREB1c	sterol regulatory element binding protein 1c
SRC-1	steroid receptor coactivator-1
SULT	sulfotransferase
SUMO	small ubiquitin-like modifier
TCDD	2,3,7,8-tetrachlorodibenzo-p-dioxin
TEWL	transepidermal water loss
TLR	toll-like receptor
TNF-	tumor necrosis factor
Treg	regulatory T cell
TSLP	thymic stromal lymphopoietin
UGT	uridine 5′-diphospho-glucuronosyltransferase
XAP-2	HBV X-associated protein 2