UV radiation-induced skin aging in hairless mice is effectively prevented by oral intake of sea buckthorn (Hippophae rhamnoides L.) fruit blend for 6 weeks through MMP suppression and increase of SOD activity
| Autor: | Chung Hun Oh, In Sik Hwang, Bae Hwan Kim, Dae Youn Hwang, Sun Il Choi, Ji Eun Kim, Young Ju Lee, Hee Seob Lee, Hong Ju Son, Sang Hak Lee, Min Ju Jang, Hye Ryun Lee |
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| Rok vydání: | 2012 |
| Předmět: |
Vitamin
medicine.medical_specialty Ultraviolet Rays Administration Oral Gene Expression Biology Complex Mixtures Matrix Metalloproteinase Inhibitors medicine.disease_cause Collagen Type I Skin Aging Superoxide dismutase chemistry.chemical_compound Mice Dermis Internal medicine Hippophae Genetics medicine Animals Wrinkle Mice Hairless Superoxide Dismutase Body Weight Hippophae rhamnoides General Medicine biology.organism_classification Matrix Metalloproteinases Hairless Enzyme Activation Endocrinology medicine.anatomical_structure chemistry Fruit Immunology biology.protein medicine.symptom Epidermis Oxidative stress Blood Chemical Analysis |
| Zdroj: | International journal of molecular medicine. 30(2) |
| ISSN: | 1791-244X |
| Popis: | Oxidative stress and oxidative photodamage induced by UV radiation can cause serious skin damage that is characterized by wrinkling, roughness, laxity and pigmentation. The effects of a sea buckthorn (Hippophae rhamnoides L.) fruit blend (SFB) containing sea buckthorn fruit extract, blueberry extract and collagen on UV-induced skin aging were examined by treating hairless mice for 6 weeks with UV irradiation and SFB administered orally. The effects of SFB were measured in the skin of these mice by phenotypical and histological analysis and western blotting. According to wrinkle formation analysis, the oral intake of SFB induced a decrease in wrinkle formation in the damaged skin of UV-irradiated mice. The thickness of the epidermis and dermis in the vitamin extracts (Vit)- and SFB-treated group was lower than that in the vehicle-treated group, but the group treated with SFB50 was the most effective group. The mice treated with the Vit- or SFB solution maintained a normal moisture content through the inhibition of transdermal water loss (TEWL) and an increase in skin moisture content. Furthermore, the levels of matrix metalloproteinase (MMP) and collagen protein expression were assessed in five groups to examine the mechanisms underlying the effects of SFB oral intake. The application of SFB induced a decrease in MMP-1 and -9 expression to the levels observed in the vehicle-treated group, but MMP-9 expression showed a much larger decrease than MMP-1. Furthermore, the expression of collagen-1 in the skin corresponded to MMP expression except for the SFB30-treated group, whereas the superoxide dismutase (SOD) activity was increased dramatically in the SFB50-treated group. These results suggest that SFB has potential as a protective and therapeutic drug candidate against skin aging that functions by regulating the moisture content, MMP expression levels and SOD activity. |
| Databáze: | OpenAIRE |
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