title: Effects of genistein on early-stage cutaneous wound healing.
abstract: Wound healing occurs in three sequential phases: hemostasis and inflammation, proliferation, and remodeling. Inflammation, the earliest phase, is considered a critical period for wound healing because immune cells remove damaged tissues, foreign debris, and remaining dead tissue. Wound healing would be delayed without inflammation, and this phase is affected by antioxidation capacity. Therefore, we hypothesized that genistein, which has an antioxidant effect, might modulate the wound healing process by altering the inflammatory response. After three days of acclimation, mice were divided into three groups: control, 0.025% genistein, and 0.1% genistein. After two weeks of an experimental diet, skin wounds were induced. Wounded skin areas were imaged, and the healing rate calculated. To measure lipid peroxidation, antioxidant enzyme expression and activity, and pro-inflammatory cytokine expression, skin and liver tissues were harvested at 12, 24, 48, and 72 h. Genistein did not affect body weight. The rate of wound closure in mice fed genistein was significantly faster than in the control group during the early stage of wound healing, especially in first three days. Cu, Zn-SOD and Mn-SOD expression in wound skin tissue in the 0.1% genistein group was lower than in the control group. However, CAT expression did not differ among groups. We also found that genistein modulated NF-κB and TNF-α expression during the early stage of wound healing. The genistein group had significantly lower hepatic lipid peroxidation and higher SOD, CAT, and GPx activities than the control group. These results suggest that genistein supplementation reduces oxidative stress by increasing antioxidant capacity and modulating proinflammatory cytokine expression during the early stage of wound healing.
authors.affiliation: Department of Home Economics Education, Chung-Ang University, Seoul 156-756, Republic of Korea.
authors.forename: Eunkyo
authors.initials: E
authors.lastname: Park
authors.forename: Seung Min
authors.initials: SM
authors.lastname: Lee
authors.forename: In-Kyung
authors.initials: IK
authors.lastname: Jung
authors.forename: Yunsook
authors.initials: Y
authors.lastname: Lim
authors.forename: Jung-Hyun
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D005260:Female; D019833:Genistein / Q000494:pharmacology*; D020672:I-kappa B Proteins / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D008099:Liver / Q000201:enzymology; D051379:Mice; D008813:Mice, Inbred ICR; D016328:NF-kappa B / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D017382:Reactive Oxygen Species / Q000378:metabolism; D012867:Skin / Q000187:drug effects* / Q000293:injuries*; D013482:Superoxide Dismutase / Q000037:antagonists & inhibitors / Q000378:metabolism; D000072105:Superoxide Dismutase-1; D014409:Tumor Necrosis Factor-alpha / Q000037:antagonists & inhibitors; D014945:Wound Healing / Q000187:drug effects*
chemical_list: D000975:Antioxidants; C083487:I kappa B beta protein; D020672:I-kappa B Proteins; D016328:NF-kappa B; D017382:Reactive Oxygen Species; D014409:Tumor Necrosis Factor-alpha; D019833:Genistein; C000606291:Sod1 protein, mouse; D013482:Superoxide Dismutase; D000072105:Superoxide Dismutase-1