How Inflammation Rewires the Gut’s Nervous System and Impairs Motility
A study in the Journal of Experimental Medicine reveals a novel neuroimmune mechanism behind persistent gastrointestinal (GI) motility disorders in inflammatory bowel disease (IBD). Researchers found that during intestinal inflammation, enteric neurons upregulate the chemokine CCL2, which recruits monocytes into the myenteric plexus. These monocytes differentiate into macrophages, driving excessive structural remodeling of the enteric nervous system (ENS) through a combination of neuronal loss and aberrant neurogenesis. This remodeling leads to lasting motility dysfunction, even after inflammation subsides. The study also identifies a protective counterbalance: a hypoxia-induced stress response in neurons, mediated by HIF1α, which can limit ENS remodeling and preserve gut motility when enhanced.
Why it might matter to you:
This research directly connects chronic inflammation to permanent neural circuit damage in the gut, a concept highly relevant to understanding post-inflammatory complications. For a researcher focused on gut immunity and regenerative strategies, the identified HIF1α pathway offers a potential therapeutic target to protect nervous tissue integrity during inflammatory episodes. The mechanistic link between immune cell recruitment and neural remodeling could also inform broader investigations into how inflammation alters tissue microenvironments in other systems, including those relevant to diabetes or cell-based therapies.
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