Med Sci Monit:自噬有助于门静脉结扎后大鼠的肝再生

2020-03-18 MedSci原创 MedSci原创

本研究旨在研究调查70%的门静脉结扎(PVL)(一种广泛使用的诱导肝脏快速再生的方法)对大鼠未结扎的肝叶中自噬相关蛋白表达的影响。

本研究旨在研究调查70%的门静脉结扎(PVL)(一种广泛使用的诱导肝脏快速再生的方法)对大鼠未结扎的肝叶中自噬相关蛋白表达的影响。

 

大鼠接受假手术(n = 30,主要门静脉分支暴露但保持完整)或PVL(n = 30,主要门静脉分支两次结扎)手术。手术后12、24、48、72和168小时收集肝脏样品。测定未结扎的肝叶中的肝脏体积,肝色,未结扎的肝百分比以及轻链(LC)3,beclin 1和cyclin D1的表达。

 

结果显示,与假手术大鼠相比,PVL大鼠早在手术后12小时就观察到未结扎的肝叶的生长增加(P <0.001);早在手术后24小时,在未结扎的PVL大鼠肺叶中观察到LC3 II/I比值增加(P≤0.001)。与假手术组相比,非结扎PVL大鼠肺叶在手术后12至72 h和手术后12至168 h均观察到beclin 1(P≤0.001)和细胞周期蛋白D1(P <0.001)的表达增加。在未结扎的肺叶中,beclin 1和cyclin D1的表达与LC3 II / I比呈线性正相关。

 

总之,该研究结果表明,PVL后未结扎组肝脏会激活自噬。Beclin 1和细胞周期蛋白D1与PVL诱导的快速肝再生模型中的自噬活性呈线性正相关。

 

原始出处:

 

Chang-jun JiaHao Sun, et al., Autophagy Contributes to Liver Regeneration After Portal Vein Ligation in Rats. Med Sci Monit. 2019; 25: 5674–5682. doi: 10.12659/MSM.915404

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