Propylene Glycol Alginate Sodium Sulfate Alleviates Cerulein-Induced Acute Pancreatitis by Modulating the MEK/ERK Pathway in Mice

نویسندگان

  • Hui Zhang
  • Yueyue Li
  • Linqiang Li
  • Hua Liu
  • Liangkai Hu
  • Ying Dai
  • Jianqing Chen
  • Shuqi Xu
  • Weimin Chen
  • Xiaorong Xu
  • Xuanfu Xu
چکیده

Previous studies have focused on the effects of propylene glycol alginate sodium sulfate  (PSS)  against  thrombosis,  but  the  anti-inflammatory  potential  is  unknown.  Therefore,  we  specifically focused on the protective effects of PSS on cerulein-induced acute pancreatitis (AP)  using a mouse model, and investigated the mechanism of PSS on autophagy and apoptosis via the  Mitogen-activated  protein  kinase  (MEK)/extracellular  signal-regulated  kinase  (ERK)  pathway.  Cerulein (100 ug/kg) was used to induce AP by ten intraperitoneal injections at hourly intervals in  Balb/C mice. Pretreatment with vehicle or PSS was carried out 1 h before the first cerulein injection  and two doses (25 mg/kg and 50 mg/kg) of PSS were injected intraperitoneally. The severity of AP was  assessed by pathological score, biochemistry, pro-inflammatory cytokine levels, myeloperoxidase  (MPO) activity and MEK/ERK activity. Furthermore, pancreatic histological scores, serum amylase  and lipase activities, tumor necrosis factor-α (TNF-α), interleukin (IL)-1β interleukin (IL)-6 levels, and  MPO activity were significantly reduced by PSS via up-regulated MEK/ERK activity. The representative  molecules of apoptosis and autophagy, such as Bcl-2, Bax, Lc-3, Beclin-1, P62, were remarkably reduced.  Taken together, these results indicate that PSS attenuates pancreas injury by inhibiting autophagy and  apoptosis through a mechanism involving the MEK/ERK signaling pathway.

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عنوان ژورنال:

دوره 15  شماره 

صفحات  -

تاریخ انتشار 2017