ArticleOpen medicine (Warsaw, Poland)2025
Endotoxin tolerance inhibits NLRP3 inflammasome activation in macrophages of septic mice by restoring autophagic flux through TRIM26.
Article in Open medicine (Warsaw, Poland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: Endotoxin tolerance (ET) has been demonstrated to attenuate the inflammatory response in murine models of sepsis. This study seeks to elucidate the underlying mechanisms by which ET modulates inflammation in sepsis, with a particular focus on macrophage autophagy. Methods: An Results: Heightened inflammation was observed in the TNF-α levels and various organs of the sepsis group; conversely, inflammation was reduced in the group receiving ET treatment. Upon stimulation with LPS, primary mouse peritoneal macrophages exhibited activation of the NLRP3 inflammasome and autophagy, accumulation of mitochondrial reactive oxygen species, compromised membrane potential, resulting in cell apoptosis, and decreased expression of TRIM26. ET was found to enhance autophagy, suppress the activation of NLRP3 inflammasomes, and upregulate the expression of TRIM26. Interestingly, modulation of autophagy levels either reversed or intensified the protective effects of ET on macrophages Conclusion: We reveal that ET restores the autophagic flux in macrophages, inhibit NLRP3 inflammasome activation, and mitigate inflammatory damage in septic mice, potentially through the regulation of TRIM26.
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