AP-1	activator protein-1
ARE	antioxidant responsive element
DCFH-DA	2′,7′-dichlorofluorescin diacetate
DPPH	1,1-diphenyl-2-picrylhydrazyl
ERK	extracellular signal-regulated kinase
HaCaT	human skin keratinocyte cell line
HO-1	heme oxygenase 1
IL-8	interleukin 8
JNK	c-Jun N-terminal kinase
MAPK	mitogen-activated protein kinase
MDC	human macrophage-derived chemokine
NFAT	nuclear factor of activated T cells
NF-κB	nuclear factor kappa-light-chain-enhancer of activated B cells
NQO1	NAD(P)H: quinone oxidoreductase1
Nrf2	nuclear factor E2-related factor 2
RANTES	regulated upon activation, normal T cell expressed, and secreted
ROS	reactive oxygen species
TARC	thymus- and activation-regulated chemokine