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KMID : 0604520050310010103
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Journal of the Society of Cosmetic Scientists of Korea
2005 Volume.31 No. 1 p.103 ~ p.109
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Effects of Ethyl Acetate Fraction from Melothria Heterophylla on Antioxidant Activity and Matrix Metalloproteinase-1 Expression in Ultraviolet A-irradiated Human Dermal Fibroblasts
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Cho Young-Ho
Kim Jin-Hee
Sim Gwan-Sub
Lee Dong-Hwan
Lee Beom-Cheon
Pyo Hyeong-Bae
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Abstract
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UV irradiation leads to distinct changes in skin connective tissue, which is degradation of collagen. Many of these alterations in the extracellular matrix are mediated by matrix metalloproteinases. In this study, to develop a new anti-aging agent, we screened the antioxidant activity of solvent fractions from ethanolic extract of Melothria Heterophylla. Among the four solvent fractions tested, the EtOAc fraction exhibited the highest antioxidant activity. It was investigated the inhibitory effect of the EtOAc fraction on the expression and activity of MMP-1 in UVA-irradiated human dermal fibroblasts. The EtOAc fraction inhibited the activity of MMP-1 in a dose dependent manner with the IC_{50} values of 9{mu}/mL. Also, UVA-induced MMP-1 expression was reduced about 90% by 100{mu}g/mL of the EtOAc fraction but MMP-1 mRNA expression was not inhibited. Therefore, we conclude that the EtOAc fraction significantly inhibits MMP-1 expression at the protein level. From these results, we suggest that the EtOAc fraction from M. heterophylla could be used as a new anti-aging agent for the photo-damaged skin.
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KEYWORD
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antioxidant, fibroblasts, Melothria Heterophylla, MMPs, UVA-irradiation
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