ArticleCellular and molecular gastroenterology and hepatology2026
Glial Connexin-43 Is a Pathogenic Mechanism Promoting Gut Inflammation in Postoperative Ileus Induced by Gut Surgical Manipulation With Potential Relevance to Humans.
Article in Cellular and molecular gastroenterology and hepatology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Ungluing the Mystery of Postoperative Ileus: Enteric Glial Connexin 43 Promotes the Development of Inflammation.Cellular and molecular gastroenterology and hepatology · 2026Article
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14 authors.
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Abstract
BACKGROUND &
aimsAbdominal surgery often precipitates postoperative ileus (POI), a frequent and severe gastrointestinal (GI) motility disorder, through mechanisms that involve intestinal inflammation. Emerging data show that enteric glia acquire a reactive phenotype that aggravates POI, but how glia exert this effect remains unclear. Enteric glia express connexin-43 hemichannels (gCx43), which are implicated in neurological and inflammatory disorders. Thus, we aimed to decipher contributions of glial connexin-43 (Cx43) in the pathophysiology of POI.
methodsWe induced POI in mice using in vivo intestinal manipulation and used glial Cx43cKO (Sox10
resultsCx43 is the highest expressed connexin in enteric glia in mice and humans. Up-regulation of Cx43 occurs in various disease models linked to POI, GI surgical trauma, inflammation, immune cell activation, and enteric gliosis. In the mouse POI model, glial Cx43-deletion reduces glial reactivity, pro-inflammatory signals, upregulates host protection genes, regulates immune cell activation, and prevents enteric neuropathy. In hEGCs, interleukin (IL)-1β induction opens Cx43 and stimulates release of IL-6 and C-C motif ligand 2 (CCL2). The Cx43 peptide inhibitor, 43Gap26, inhibits glial Cx43 activation, reduces IL-6 release, and blocks upregulation of macrophage activation factors and immune cell regulation factors. Surgical intestinal trauma in patients upregulates Cx43 during inflammation and enteric gliosis in mouse POI.
conclusionsGlial Cx43 signaling promotes enteric gliosis, immune cell activation, inflammation, and enteric neuropathy in mice with potential translatability to humans after intestinal surgical trauma and mechanical stress in POI. Interventions that block glial Cx43 activation may be protective against POI development.
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