Cedrol Enhances Extracellular Matrix Production in Dermal Fibroblasts in a MAPK-Dependent Manner
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Background: The extracellular matrix (ECM) produced by dermal fibroblasts supports skin structure, and degradation and/or reduced production of ECM are the main causes of wrinkle formation. Objective: The aim of this study was to identify the active ingredient that enhances ECM production in dermal fibroblasts. Methods: Polarity-based fractionation was used to isolate the active ingredient from natural extracts,and the effects of cedrol (isolated from Pterocarpus indicusirginia) on ECM production in cultured human dermal fibroblasts was investigated by reverse transcriptionpolymerase chain reaction, enzyme linked immunosorbent assay, and Western blot analysis. Results: Cedrol accelerated fibroblast growth in a dose-dependent manner and increased the production of type 1 collagen and elastin. Phosphorylation of p42/44 extracellular signal-regulated kinase, p38mitogen-activated protein kinase, and Akt was markedly increased by cedrol, indicating that enhanced ECM production is linked to activation of intracellular signaling cascades. Conclusion: These results indicate that cedrol stimulates ECM production, with possible applications to the maintenance of skin texture.
Abstract
Background: The extracellular matrix (ECM) produced by dermal fibroblasts supports skin structure, and degradation and/or reduced production of ECM are the main causes of wrinkle formation. Objective: The aim of this study was to identify the active ingredient that enhances ECM production in dermal fibroblasts. Methods: Polarity-based fractionation was used to isolate the active ingredient from natural extracts,and the effects of cedrol (isolated from Pterocarpus indicusirginia) on ECM production in cultured human dermal fibroblasts was investigated by reverse transcriptionpolymerase chain reaction, enzyme linked immunosorbent assay, and Western blot analysis. Results: Cedrol accelerated fibroblast growth in a dose-dependent manner and increased the production of type 1 collagen and elastin. Phosphorylation of p42/44 extracellular signal-regulated kinase, p38mitogen-activated protein kinase, and Akt was markedly increased by cedrol, indicating that enhanced ECM production is linked to activation of intracellular signaling cascades.
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