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<p>Acute mesenteric ischemia–reperfusion is a life-threatening condition that causes severe intestinal injury through oxidative stress, inflammation, and apoptosis. Despite its high mortality rate, no pharmacological treatment is currently available to reduce tissue damage. This study aimed to evaluate the therapeutic potential of phosphatidylserine in a rat model of mesenteric ischemia–reperfusion and to explore its underlying mechanisms, with particular focus on the protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway. Thirty-six male Wistar rats were randomly assigned into six groups: sham, ischemia–reperfusion, and phosphatidylserine-treated groups at doses of 10, 20, and 40&#xa0;mg/kg. Ischemia was induced by clamping the superior mesenteric artery for 60&#xa0;min, followed by 60&#xa0;min of reperfusion. Phosphatidylserine or vehicle was administered intraperitoneally 15&#xa0;min before reperfusion. Ileal tissues were collected for histopathological evaluation, measurement of malondialdehyde, interleukin-6, glutathione peroxidase and superoxide dismutase activity, analysis of tumor necrosis factor-alpha, BAX, B-cell lymphoma 2, and assessment of Akt and mTOR phosphorylation by western blot. Reverse and molecular docking studies were conducted to identify potential targets of phosphatidylserine. Phosphatidylserine at 40&#xa0;mg/kg significantly improved intestinal injury and modulated oxidative, inflammatory, and apoptotic markers. The findings support involvement of Akt/mTOR pathway and suggest phosphatidylserine as a potential therapeutic candidate.</p>

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Exogenous phosphatidylserine protects against mesenteric ischemia-reperfusion with associated Akt/mTOR pathway upregulation

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月29日

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  • Amirabbas Mohammadi Hamaneh,
  • Moein Ghasemi,
  • Mohammad Mahdi Mehrabi,
  • Sara Ashtari,
  • Fatemeh Nejati,
  • Houman Kazemzadeh,
  • Ramin Goudarzi,
  • Seyed Mohammad Tavangar,
  • Ahmad Reza Dehpour,
  • Alireza Partoazar

摘要

Acute mesenteric ischemia–reperfusion is a life-threatening condition that causes severe intestinal injury through oxidative stress, inflammation, and apoptosis. Despite its high mortality rate, no pharmacological treatment is currently available to reduce tissue damage. This study aimed to evaluate the therapeutic potential of phosphatidylserine in a rat model of mesenteric ischemia–reperfusion and to explore its underlying mechanisms, with particular focus on the protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway. Thirty-six male Wistar rats were randomly assigned into six groups: sham, ischemia–reperfusion, and phosphatidylserine-treated groups at doses of 10, 20, and 40 mg/kg. Ischemia was induced by clamping the superior mesenteric artery for 60 min, followed by 60 min of reperfusion. Phosphatidylserine or vehicle was administered intraperitoneally 15 min before reperfusion. Ileal tissues were collected for histopathological evaluation, measurement of malondialdehyde, interleukin-6, glutathione peroxidase and superoxide dismutase activity, analysis of tumor necrosis factor-alpha, BAX, B-cell lymphoma 2, and assessment of Akt and mTOR phosphorylation by western blot. Reverse and molecular docking studies were conducted to identify potential targets of phosphatidylserine. Phosphatidylserine at 40 mg/kg significantly improved intestinal injury and modulated oxidative, inflammatory, and apoptotic markers. The findings support involvement of Akt/mTOR pathway and suggest phosphatidylserine as a potential therapeutic candidate.