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Abstract Title:

Epigallocatechin gallate's protective effect against MMP7 in recessive dystrophic epidermolysis bullosa patients.

Abstract Source:

J Invest Dermatol. 2007 Apr;127(4):821-8. Epub 2006 Nov 30. PMID: 17139264

Abstract Author(s):

Sylvie Igondjo-Tchen Changotade, Antoine Assoumou, Farida Guéniche, Florence Fioretti, Sylvie Séguier, Yves de Prost, Christine Bodemer, Gaston Godeau, Karim Senni

Abstract:

The analysis of phenotype-genotype correlations of patients suffering from recessive dystrophic epidermolysis bullosa (RDEB) evidenced intrafamilial and interfamilial phenotype variability occurring for the same mutation of COL7A1; this underscores the role of other genetics environmental factors in the expressivity of the disease. In this work, we checked whether matrilysin 1 (matrix metalloproteinase (MMP)7) could take part in the epidermal detachment in RDEB. Furthermore, we investigated epigallocatechin 3 gallate (EGCG) to determine whether it could inhibit matrilysin activities on collagen type VII and fibrillin 1 known to be associated with the dermo-epidermal junction. In this work, matrilysin 1 was detected in affected and unaffected skins of the three RDEB patients; furthermore, MMP7 was shown to degrade ex vivo on healthy normal skin collagen VII and fibrillin 1. Thus, we suspect that MMP7 could take an active part in the epidermal detachment occurring during RDEB. We evidenced that EGCG in in vitro as well as in ex vivo experiments was a good inhibitor of MMP7 and developed a good protection of collagen type VII and fibrillin 1 susceptible of being degraded by MMP7. We therefore propose that EGCG could be used beneficially in patients suffering from RDEB.

Study Type : Human Study

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Sayer Ji
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