PMID- 23449129 OWN - NLM STAT- MEDLINE DCOM- 20130502 LR - 20220310 IS - 1525-7886 (Print) IS - 1525-7886 (Linking) VI - 64 IP - 1 DP - 2013 Jan-Feb TI - Effect and mechanism of epigallocatechin-3-gallate (EGCG). against the hydrogen peroxide-induced oxidative damage in human dermal fibroblasts. PG - 35-44 AB - This study was conducted to investigate the protective effects of epigallocatechin-3-gallate (EGCG) on hydrogen peroxide (H2O2)-induced oxidative stress injury in human dermal fibroblasts. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) colorimetric assay and the use of Hoechst staining and terminal deoxynucleotidyl transferase dUTP nick end labeling for apoptosis detection indicated that the administration of H2O2 to human dermal fibroblasts caused cell damage and apoptosis. The incubation of human dermal fibroblasts with EGCG markedly inhibited the human dermal fibroblast injury induced by H2O2. The assay for 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity indicated that EGCG had a direct, concentration-dependent antioxidant activity. Treatment of human dermal fibroblasts with EGCG significantly reversed the H2O2-induced decrease of superoxide dismutase (SOD) and glutathione peroxidase (GSH-px), and the inhibition of malondialdehyde (MDA) levels. These results showed that EGCG possessed antioxidant activity and was effective against H2O2-induced human dermal fibroblast injury by enhancing the activity of SOD and GSH-px, and by decreasing the MDA level. Our results suggested that EGCG should have the potential to be used further in cosmetics and in the prevention of aging-related skin injuries. FAU - Feng, Bing AU - Feng B AD - School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu, People's Republic of China. FAU - Fang, Yun AU - Fang Y FAU - Wei, Shao-Min AU - Wei SM LA - eng PT - Journal Article PL - United States TA - J Cosmet Sci JT - Journal of cosmetic science JID - 9814276 RN - 0 (Benzimidazoles) RN - 0 (Biphenyl Compounds) RN - 0 (Free Radical Scavengers) RN - 0 (Picrates) RN - 0 (Tetrazolium Salts) RN - 0 (Thiazoles) RN - 4Y8F71G49Q (Malondialdehyde) RN - 8R1V1STN48 (Catechin) RN - BBX060AN9V (Hydrogen Peroxide) RN - BQM438CTEL (epigallocatechin gallate) RN - DFD3H4VGDH (1,1-diphenyl-2-picrylhydrazyl) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - EUY85H477I (thiazolyl blue) RN - P976261J69 (bisbenzimide ethoxide trihydrochloride) SB - IM MH - Apoptosis/*drug effects MH - Benzimidazoles MH - Biphenyl Compounds MH - Catechin/*analogs & derivatives/pharmacology MH - Cells, Cultured MH - Fibroblasts/*drug effects MH - Free Radical Scavengers/pharmacology MH - Glutathione Peroxidase/metabolism MH - Humans MH - Hydrogen Peroxide/*adverse effects MH - In Situ Nick-End Labeling MH - Malondialdehyde MH - Oxidation-Reduction MH - Picrates MH - Skin/*cytology MH - Superoxide Dismutase/metabolism MH - Tetrazolium Salts/pharmacology MH - Thiazoles/pharmacology EDAT- 2013/03/02 06:00 MHDA- 2013/05/03 06:00 CRDT- 2013/03/02 06:00 PHST- 2012/06/05 00:00 [accepted] PHST- 2013/03/02 06:00 [entrez] PHST- 2013/03/02 06:00 [pubmed] PHST- 2013/05/03 06:00 [medline] PST - ppublish SO - J Cosmet Sci. 2013 Jan-Feb;64(1):35-44.