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Background and aim <p>Intestinal ischemia/reperfusion (I/R) injury is a critical condition characterized by oxidative stress, inflammation, and apoptosis, leading to significant tissue damage. Imeglimin (IMEG), a novel antidiabetic agent, has recently shown cytoprotective effects through modulation of mitochondrial function, oxidative stress, and inflammatory pathways. We aimed to investigate the potential protective effects of IMEG against II/R injury and to explore the underlying mechanisms involved.</p> Methodology <p>Thirty-two adult male Wistar albino rats were divided into four groups; sham group, IMEG group, intestinal I/R group, IMEG + Intestinal I/R group. Oxidative stress markers [malondialdehyde (MDA), reduced glutathione (GSH)], and histopathological changes were assessed. Biochemical analyses included measurement of phosphorylated AMP-activated protein kinase (p-AMPK), NOD-like receptor protein 3 (NLRP3) and caspase-3. Also, gene expression of interleukin (IL)-1β, caspase-1, apoptotic Bcl-2-associated protein x (BAX) and anti-apoptotic B-cell leukemia/lymphoma 2 protein (Bcl-2) were measured. Nuclear factor-κB (NF-κB) immuno expression was estimated.</p> Results <p>MDA, NLRP3, caspase-3 levels, IL-1β, caspase-1, Bax gene expression, and NF-κB immunohistochemical expression were all significantly elevated in the intestinal I/R group while GSH, p-AMPK levels and Bcl-2 gene expression were significantly decreased. Every metric indicated a notable improvement with IMEG.</p> Conclusion <p>IMEG exerts a protective effect against intestinal I/R injury through its antioxidant, anti-inflammatory, and anti-apoptotic properties (Fig. 1).</p>

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Imeglimin confers protection against intestinal ischemia/reperfusion injury in rats through AMPK-dependent inhibition of NF-κB/NLRP3 inflammasome signaling and mitigation of oxidative stress and apoptosis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月24日

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  • Walaa Yehia Abdelzaher,
  • Hanaa Mohamed Khalaf,
  • Rabeh Khairy Saleh,
  • Nehal Refaat Raouf,
  • Youssra Magdy Hassan,
  • Maggi Mofeed Ayad,
  • Rania Rady Fadl

摘要

Background and aim

Intestinal ischemia/reperfusion (I/R) injury is a critical condition characterized by oxidative stress, inflammation, and apoptosis, leading to significant tissue damage. Imeglimin (IMEG), a novel antidiabetic agent, has recently shown cytoprotective effects through modulation of mitochondrial function, oxidative stress, and inflammatory pathways. We aimed to investigate the potential protective effects of IMEG against II/R injury and to explore the underlying mechanisms involved.

Methodology

Thirty-two adult male Wistar albino rats were divided into four groups; sham group, IMEG group, intestinal I/R group, IMEG + Intestinal I/R group. Oxidative stress markers [malondialdehyde (MDA), reduced glutathione (GSH)], and histopathological changes were assessed. Biochemical analyses included measurement of phosphorylated AMP-activated protein kinase (p-AMPK), NOD-like receptor protein 3 (NLRP3) and caspase-3. Also, gene expression of interleukin (IL)-1β, caspase-1, apoptotic Bcl-2-associated protein x (BAX) and anti-apoptotic B-cell leukemia/lymphoma 2 protein (Bcl-2) were measured. Nuclear factor-κB (NF-κB) immuno expression was estimated.

Results

MDA, NLRP3, caspase-3 levels, IL-1β, caspase-1, Bax gene expression, and NF-κB immunohistochemical expression were all significantly elevated in the intestinal I/R group while GSH, p-AMPK levels and Bcl-2 gene expression were significantly decreased. Every metric indicated a notable improvement with IMEG.

Conclusion

IMEG exerts a protective effect against intestinal I/R injury through its antioxidant, anti-inflammatory, and anti-apoptotic properties (Fig. 1).