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Topical compositions associating sodium hyaluronate fragments and retinoid useful for cosmetic and medical dermatology
Topical compositions associating sodium hyaluronate fragments and retinoid useful for cosmetic and medical dermatology
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机译:将透明质酸钠片段和类维生素A结合的局部用组合物,可用于美容和医学皮肤病学
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摘要
Topical composition (A), contains as active ingredient, one or more fragments (I) of hyaluronate with molecular weight 50-750 kD. ACTIVITY : Dermatological. MECHANISM OF ACTION : (I) increases the number of proliferating cells, particularly fibroblasts, in the epidermis and dermis, so induce epidermal thickening. A standard cosmetic vehicle contained 0.2 % hyaluronate fragments of molecular weight 50-250 kD and was applied twice daily to the skin of SKH1 hairless mice. After an unspecified treatment time, epidermal thickness and the number of proliferating cells were determined. The mean thickness was 0.32 mm (compare 0.07 mm in controls) and the number of cells (per microscope field) was 257 compared with 96 in controls. Also the mean number of proliferating cells (positive for the marker Ki67; per field) was 96 in the epidermis and 5 in the dermis; compare 26 and 0.95 in controls.
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