Inhibition effect of Gynura procumbens extract on UV-B-induced matrix-metalloproteinase expression in human dermal fibroblasts.
J Ethnopharmacol
; 137(1): 427-33, 2011 Sep 01.
Article
en En
| MEDLINE
| ID: mdl-21672616
ETHNOPHARMACOLOGICAL RELEVANCE: Gynura procumbens Merr. (Asteraceae) has been used as a traditional remedy for various skin diseases in certain areas of Southeast Asia. AIM OF THE STUDY: In order to evaluate the protective activity of Gynura procumbens extract on skin photoaging and elucidate its mode of action. MATERIALS AND METHODS: Matrix-metalloproteinase (MMP)-1 and -9 expressions were induced by UV-B irradiation in human primary dermal fibroblasts. MMP-1 expression level was measured by enzyme-linked immunosorbent assay (ELISA) and Western blot analysis. Zymography was employed for evaluating the enzymatic activity of MMP-9. Anti-inflammatory activity and anti-oxidative capacity of the extract were evaluated by ELISA and dichlorodihydrofluorescein diacetate (DCF-DA) assay. RESULTS: The ethanolic extract of Gynura procumbens inhibited MMP-1 expression up to 70% compare to negative control group. The enzymatic activity of MMP-9 was inhibited around 73% by the treatment of 20µg/mL of the extract. The extract markedly reduced the production of reactive oxygen species (ROS). Gynura procumbens extract showed an inhibitory effect on releasing pro-inflammatory cytokines (IL-6 and IL-8) in human HaCat keratinocyte. CONCLUSION: The ethanolic extract of Gynura procumbens inhibited MMP-1 and MMP-9 expressions induced by UV-B irradiation via inhibition of pro-inflammatory cytokine mediator release and ROS production.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Rayos Ultravioleta
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Extractos Vegetales
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Envejecimiento de la Piel
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Asteraceae
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Dermis
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Metaloproteinasa 9 de la Matriz
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Metaloproteinasa 1 de la Matriz
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Fármacos Dermatológicos
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Fibroblastos
Límite:
Humans
Idioma:
En
Revista:
J Ethnopharmacol
Año:
2011
Tipo del documento:
Article
Pais de publicación:
Irlanda