1 Tarozzi, A, Marchesi, A, Hrelia, S, et al. (2005) Protective effects of cyanidin-3-0-P-glucopyranoside against UVA-induced oxidative stress in human keratinocytes. Photochem Photobiol 81, 623–629.
2 Cimino, F, Ambra, R, Canali, R, et al. (2006) Effect of cyanidin-3-O-glucoside on UVB-induced response in human keratinocytes. J Agric Food Chem 54, 4041–4047.
3 Wu, X, Beecher, GR, Holden, JM, et al. (2006) Concentrations of anthocyanins in common foods in the United States and estimation of normal consumption. J Agric Food Chem 54, 4069–4075.
4 Afaq, F, Malik, A, Syed, D, et al. (2005) Pomegranate fruit extract modulates UV-B-mediated phosphorylation of mitogen-activated protein kinases and activation of nuclear factor kappa B in normal human epidermal keratinocytes. Photochem Photobiol 81, 38–45.
5 Shih, PH, Yeh, CT & Yen, GC (2007) Anthocyanins induce the activation of phase II enzymes through the antioxidant response element pathway against oxidative stress-induced apoptosis. J Agric Food Chem 55, 9427–9435.
6 Hwang, YP, Choi, JH, Yun, HJ, et al. (2011) Anthocyanins from purple sweet potato attenuate dimethylnitrosamine-induced liver injury in rats by inducing Nrf2-mediated antioxidant enzymes and reducing COX-2 and iNOS expression. Food Chem Toxicol 49, 93–99.
7 Qiu, F, Luo, J, Yao, S, et al. (2009) Preparative isolation and purification of anthocyanins from purple sweet potato by high-speed counter-current chromatography. J Sep Sci 32, 2146–2151.
8 Lee, JS & Surh, YJ (2005) Nrf2 as a novel molecular target for chemoprevention. Cancer Lett 224, 171–184.
9 Venugopal, R & Jaiswal, AK (1996) Nrf1 and Nrf2 positively and c-Fos and Fra1 negatively regulate the human antioxidant response element-mediated expression of NAD(P)H:quinone oxidoreductase1 gene. Proc Natl Acad Sci U S A 93, 14960–14965.
10 Prestera, T, Talalay, P, Alam, J, et al. (1995) Parallel induction of heme oxygenase-1 and chemoprotective phase 2 enzymes by electrophiles and antioxidants: regulation by upstream antioxidant-responsive elements (ARE). Mol Med 1, 827–837.
11 Wasserman, WW & Fahl, WE (1997) Functional antioxidant responsive elements. Proc Natl Acad Sci U S A 94, 5361–5366.
12 Wagner, AE, Ernst, I, Iori, R, et al. (2010) Sulforaphane but not ascorbigen, indole-3-carbinole and ascorbic acid activates the transcription factor Nrf2 and induces phase-2 and antioxidant enzymes in human keratinocytes in culture. Exp Dermatol 19, 137–144.
13 Ernst, IMA, Wagner, AE, Schuemann, C, et al. (2011) Allyl-, butyl- and phenylethyl-isothiocyanate activate Nrf2 in cultured fibroblasts. Pharm Res 63, 233–240.
14 Steinbrecher, A & Linseisen, J (2009) Dietary intake of individual glucosinolates in participants of the EPIC-Heidelberg cohort study. Ann Nutr Metab 54, 87–96.
15 Srivastava, RK, Tang, SN, Zhu, W, et al. (2010) Sulforaphane synergizes with quercetin to inhibit self-renewal capacity of pancreatic cancer stem cells. Front Biosci (Elite Ed) 3, 515–528.
16 Nair, S, Hebbar, V, Shen, G, et al. (2008) Synergistic effects of a combination of dietary factors sulforaphane and ( − ) epigallocatechin-3-gallate in HT-29 AP-1 human colon carcinoma cells. Pharm Res 25, 387–399.
17 Ernst, IM, Wagner, AE, Lipinski, S, et al. (2010) Cellular uptake, stability, visualization by 'Naturstoff reagent A', and multidrug resistance protein 1 gene-regulatory activity of cyanidin in human keratinocytes. Pharmacol Res 61, 253–258.
18 Kwak, MK, Itoh, K, Yamamoto, M, et al. (2002) Enhanced expression of the transcription factor Nrf2 by cancer chemopreventive agents: role of antioxidant response element-like sequences in the nrf2 promoter. Mol Cell Biol 22, 2883–2892.
19 Sangokoya, C, Telen, MJ & Chi, JT (2010) microRNA miR-144 modulates oxidative stress tolerance and associates with anemia severity in sickle cell disease. Blood 116, 4338–4348.
20 Haack, M, Lowinger, M, Lippmann, D, et al. (2010) Breakdown products of neoglucobrassicin inhibit activation of Nrf2 target genes mediated by myrosinase-derived glucoraphanin hydrolysis products. Biol Chem 391, 1281–1293.
21 Wagner, AE, Boesch-Saadatmandi, C, Breckwoldt, D, et al. (2010) Ascorbic acid partly antagonizes resveratrol mediated heme oxygenase-1 but not paraoxonase-1 induction in cultured hepatocytes – role of the redox-regulated transcription factor Nrf2. BMC Complement Altern Med 11, 1.
22 Vari, R, D'Archivio, M, Filesi, C, et al. (2011) Protocatechuic acid induces antioxidant/detoxifying enzyme expression through JNK-mediated Nrf2 activation in murine macrophages. J Nutr Biochem 22, 409–417.
23 Feng, R, Ni, HM, Wang, SY, et al. (2007) Cyanidin-3-rutinoside, a natural polyphenol antioxidant, selectively kills leukemic cells by induction of oxidative stress. J Biol Chem 282, 13468–13476.