Document Detail

Coffea arabica extract and its constituents prevent photoaging by suppressing MMPs expression and MAP kinase pathway.
MedLine Citation:
PMID:  21056074     Owner:  NLM     Status:  In-Process    
UV is a potent factor in skin photoaging and photocarcinogenesis. Therefore, investigating the inhibiting mechanisms of photoaging would be useful to enable development of agents to slow down the aging process. UV-irradiation increased metalloproteinase (MMP)-1, -3, and -9 and then causes collagen and elastin degradation, leading to the formation of coarse wrinkles and sagging skin. Polyphenols, a group of compounds, possessing a variety of biological activities including inhibition of MMP-1 and elastase, are widely distributed in plants including Coffea arabica. In this study, Coffea arabica leaves extract (CAE), its hydrolysates (CAH), chlororgenic acid and caffeic acid, are studied for their anti-photoaging effect. Coffea arabica leaves were extracted with methanol, and the extract was hydrolyzed with different concentrations of hydrochloric acid. The various concentrations of CAE, CAH, chlororgenic acid and caffeic acid were subject to MMPs and elastase inhibition tests. The fibroblast was used for collagen synthesis and MMP-1, -3, -9 inhibition tests on herbal extracts. The results showed that CAE stimulated type I procollagen expression, inhibited MMP-1, -3, -9 expression and inhibited the phosphorylation of JNK, ERK and p38. The results suggest that CAE can prevent photo-damage in skin through inhibiting MMP expression and MAP kinase pathway.
Hsiu-Mei Chiang; Tsen-Jung Lin; Chen-Yuan Chiu; Chiung-Wen Chang; Kuo-Chiu Hsu; Pei-Ching Fan; Kuo-Ching Wen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-11-04
Journal Detail:
Title:  Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association     Volume:  49     ISSN:  1873-6351     ISO Abbreviation:  Food Chem. Toxicol.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8207483     Medline TA:  Food Chem Toxicol     Country:  England    
Other Details:
Languages:  eng     Pagination:  309-18     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ltd. All rights reserved.
Department of Cosmeceutics, China Medical University, Taichung, Taiwan.
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