銀耳多糖(TFPS)在抗光老化中的應(yīng)用研究(下)
銀耳多糖(TFPS)對(duì)UVB照射后人永生化角質(zhì)形成細(xì)胞(Ha Ca T細(xì)胞)的抗光老化作用,旨在為銀耳多糖(TFPS)在具有抗光老化活性的功能護(hù)膚品或修復(fù)皮膚光損傷治療藥物方面的應(yīng)用提供經(jīng)驗(yàn)和數(shù)據(jù)。
研究顯示銀耳多糖(TFPS)預(yù)處理可以降低細(xì)胞內(nèi)ROS含量,過(guò)氧化氫酶、超氧化物歧化酶、谷胱甘肽過(guò)氧化物酶等抗氧化物質(zhì)活性顯著增加,還可以通過(guò)上調(diào)Nrf2和下調(diào) Keap1表達(dá)保護(hù)人真皮成纖維細(xì)胞[10]。TFPS可通過(guò)抑制蛋白激酶B、p38絲裂原活化蛋白激酶、核轉(zhuǎn)錄因子-κB(NF-κB)的激活來(lái)降低脂多糖處理的RAW264.7細(xì)胞內(nèi)ROS水平,還可以顯著抑制促炎細(xì)胞因子的表達(dá)[11, 12]。
研究結(jié)果顯示,1~5 mg/m L的銀耳多糖(TFPS)安全性好,可提高Ha Ca T細(xì)胞被UVB照射后 降 低 的 細(xì) 胞 活 力 , 研 究 結(jié) 果 表 明 銀 耳 多 糖(TFPS)能夠促進(jìn)起到抗光損傷的作用,推測(cè)可能與抗氧化作用相關(guān),具體仍有待后續(xù)研究,而研究結(jié)果為TFPS在具有抗光老化活性的功能護(hù)膚品或修復(fù)皮膚光損傷治療藥物方面的應(yīng)用提供了實(shí)驗(yàn)依據(jù)。
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