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    • Ac-SDKP调节CREB、Smad信号抑制矽肺纤维化的作用

    Yi ZHANG, Yan LIU,Ying LI,Liyan ZHU,Jianhui WANG,Xiuhong YANG,Hong XU,Fang YANG

    The Journal of Practical Medicine（2017）

    Cited 5|Views20
    Abstract
    目的 研究Ac-SDKP调节p-CREB、p-Smad2/3信号抑制矽肺纤维化的作用.方法 Wistar大鼠随机分为:对照组、矽肺模型组、Ac-SDKP抗纤维化治疗组、Ac-SDKP预防治疗组.Van Gieson染色观察肺组织形态,Western Blot检测α-SMA、cAMP、PKA、p-CREB和p-Smad2/3蛋白表达;免疫荧光检测p-Smad2/3与α-SMA的共表达.结果 矽肺模型组,纤维化病变区域可见胶原沉积,α-SMA、p-Smad2/3蛋白表达明显增多,cAMP、PKA及p-CREB表达显著减少.经Ac-SDKP干预后,cAMP、PKA及p-CREB的表达显著增加,α-SMA、p-Smad2/3的蛋白表达明显降低,肺组织损伤减轻,胶原沉积减少.结论 Ac-SDKP可通过cAMP/PKA/p-CREB信号抑制p-Smad2/3的表达,发挥抑制矽肺纤维化的作用.
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