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173 Filagrina y la función de barrera - Antonio Rondón Lugo

173 Filagrina y la función de barrera - Antonio Rondón Lugo

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Se pue<strong>de</strong> concluir que <strong>la</strong> fi<strong>la</strong>grina aparece <strong>de</strong> forma conjunta a <strong>la</strong>queratina en los gránulos <strong>de</strong> queratohialina que abundan en elcitop<strong>la</strong>sma <strong>de</strong> <strong>la</strong>s célu<strong>la</strong>s epiteliales <strong>de</strong> <strong>la</strong> epi<strong>de</strong>rmis a partir <strong>de</strong> <strong>la</strong>scapas superiores <strong>de</strong>l estrato espinoso. Como ha sido indicado, sufunción es formar puentes <strong>de</strong> unión entre <strong>la</strong>s molécu<strong>la</strong>s <strong>de</strong> queratina,es <strong>de</strong>cir, constituyen una suerte <strong>de</strong> cemento molecu<strong>la</strong>r que mantiene<strong>la</strong>s molécu<strong>la</strong>s unidas y asegura que su unión, fusión y plegamientosean los correctos.Referencias1. Candi E, Schmidt R, Melino G. The cornified envelope: a mo<strong>de</strong>lof cell <strong>de</strong>ath in the skin. Nat Rev Mol Cell Biol 2005:6:328-40.2. McGrath JA. Skin barrier genetics: fi<strong>la</strong>ggrin and the<strong>de</strong>rmatologist. Hong Kong J. Dermatol. Venereol. (2011) 19, 116-122,3. Harding CR. The stratum corneum: structure and function inhealth and disease. Dermatol Ther. 2004;17:6–15.4. McGrath J, Uitto J. The fi<strong>la</strong>ggrin story: novel insights into skinbarrierfunction and disease. Trends Mol Med. 2008; 14:20-7.5. Gutowska-Owsiak D, Schaupp AL, Salimi M, Taylor S, Ogg GS.Interleukin-22 downregu<strong>la</strong>tes fi<strong>la</strong>ggrin expression and affectsexpression of profi<strong>la</strong>ggrin processing enzymes. Br J Dermatol2011;165:492-8.6. Elias PM, Chol EH. Interactions among stratum corneum<strong>de</strong>fensive functions. Exp Dermatol 2005;14:719-267. Rawlings AV, Harding CR. Moisturization and skin barrierfunction. Dermatol Ther. 2004;17:43–8.8. Elias PM. Stratum corneum <strong>de</strong>fensive functions: an integratedview. J Invest Dermatol 2005;125:183-200.9. Rawlings AV, Scott IR, Harding CR, Bowser PA. Stratumcorneum moisturization at the molecu<strong>la</strong>r level. J Invest Dermatol.1994;103:731–40.10. Harding CR, Scott IR. Histidine-rich proteins (fi<strong>la</strong>grins).Structural and functional heterogeneity during epi<strong>de</strong>rmaldifferentiation. J Mol Biol. 1983;170:651–73.11. Scott IR, Harding CR. Fi<strong>la</strong>ggrin breakdown to water bindingcompounds during <strong>de</strong>velopment of the rat stratum corneum is

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