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Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction

INTRODUCTION: Skin aging may occur as a result of increased free radicals in the body. Vitamin E, the major chain-breaking antioxidant, prevents propagation of oxidative stress, especially in biological membranes. In this study, the molecular mechanism of tocotrienol-rich fraction (TRF) in preventin...

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Autores principales: Makpol, Suzana, Azura Jam, Faidruz, Anum Mohd Yusof, Yasmin, Zurinah Wan Ngah, Wan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Termedia Publishing House 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3258810/
https://www.ncbi.nlm.nih.gov/pubmed/22291837
http://dx.doi.org/10.5114/aoms.2011.25567
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author Makpol, Suzana
Azura Jam, Faidruz
Anum Mohd Yusof, Yasmin
Zurinah Wan Ngah, Wan
author_facet Makpol, Suzana
Azura Jam, Faidruz
Anum Mohd Yusof, Yasmin
Zurinah Wan Ngah, Wan
author_sort Makpol, Suzana
collection PubMed
description INTRODUCTION: Skin aging may occur as a result of increased free radicals in the body. Vitamin E, the major chain-breaking antioxidant, prevents propagation of oxidative stress, especially in biological membranes. In this study, the molecular mechanism of tocotrienol-rich fraction (TRF) in preventing oxidative stress-induced skin aging was evaluated by determining the rate of total collagen synthesis and its gene expression in human skin fibroblasts. MATERIAL AND METHODS: Primary culture of human skin fibroblasts was derived from circumcision foreskin of 9 to 12 year-old boys. Fibroblast cells were divided into 5 different treatment groups: untreated control, hydrogen peroxide (H(2)O(2))-induced oxidative stress (20 µM H(2)O(2) exposure for 2 weeks), TRF treatment, and pre- and post-treatment of TRF to H(2)O(2)-induced oxidative stress. RESULTS: Our results showed that H(2)O(2)-induced oxidative stress decreased the rate of total collagen synthesis and down-regulated COL I and COL III in skin fibroblasts. Pre-treatment of TRF protected against H(2)O(2)-induced oxidative stress as shown by increase in total collagen synthesis and up-regulation of COL I and COL III (p<0.05) genes. However, similar protective effects against H(2)O(2)-induced oxidative stress were not observed in the post-treated fibroblasts. CONCLUSIONS: Tocotrienol-rich fraction protects against H(2)O(2)-induced oxidative stress in human skin fibroblast culture by modulating the expression of COL I and COL III genes with concomitant increase in the rate of total collagen synthesis. These findings may indicate TRF protection against oxidative stress-induced skin aging.
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spelling pubmed-32588102012-01-30 Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction Makpol, Suzana Azura Jam, Faidruz Anum Mohd Yusof, Yasmin Zurinah Wan Ngah, Wan Arch Med Sci Basic Research INTRODUCTION: Skin aging may occur as a result of increased free radicals in the body. Vitamin E, the major chain-breaking antioxidant, prevents propagation of oxidative stress, especially in biological membranes. In this study, the molecular mechanism of tocotrienol-rich fraction (TRF) in preventing oxidative stress-induced skin aging was evaluated by determining the rate of total collagen synthesis and its gene expression in human skin fibroblasts. MATERIAL AND METHODS: Primary culture of human skin fibroblasts was derived from circumcision foreskin of 9 to 12 year-old boys. Fibroblast cells were divided into 5 different treatment groups: untreated control, hydrogen peroxide (H(2)O(2))-induced oxidative stress (20 µM H(2)O(2) exposure for 2 weeks), TRF treatment, and pre- and post-treatment of TRF to H(2)O(2)-induced oxidative stress. RESULTS: Our results showed that H(2)O(2)-induced oxidative stress decreased the rate of total collagen synthesis and down-regulated COL I and COL III in skin fibroblasts. Pre-treatment of TRF protected against H(2)O(2)-induced oxidative stress as shown by increase in total collagen synthesis and up-regulation of COL I and COL III (p<0.05) genes. However, similar protective effects against H(2)O(2)-induced oxidative stress were not observed in the post-treated fibroblasts. CONCLUSIONS: Tocotrienol-rich fraction protects against H(2)O(2)-induced oxidative stress in human skin fibroblast culture by modulating the expression of COL I and COL III genes with concomitant increase in the rate of total collagen synthesis. These findings may indicate TRF protection against oxidative stress-induced skin aging. Termedia Publishing House 2011-11-08 2011-10 /pmc/articles/PMC3258810/ /pubmed/22291837 http://dx.doi.org/10.5114/aoms.2011.25567 Text en Copyright © 2011 Termedia & Banach http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License, permitting all non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Basic Research
Makpol, Suzana
Azura Jam, Faidruz
Anum Mohd Yusof, Yasmin
Zurinah Wan Ngah, Wan
Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction
title Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction
title_full Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction
title_fullStr Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction
title_full_unstemmed Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction
title_short Modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction
title_sort modulation of collagen synthesis and its gene expression in human skin fibroblasts by tocotrienol-rich fraction
topic Basic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3258810/
https://www.ncbi.nlm.nih.gov/pubmed/22291837
http://dx.doi.org/10.5114/aoms.2011.25567
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