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A novel mouse model of intestinal neuronal dysplasia: visualization of the enteric nervous system. | LitMetric

AI Article Synopsis

Article Abstract

Purpose: Intestinal neuronal dysplasia (IND) is a congenital anomaly affecting gastrointestinal neural innervation, but the pathogenesis remains unclear. The homozygous Ncx/Hox11L.1 knockout (Ncx) mice exhibit megacolon and enteric ganglia anomalies, resembling IND phenotypes. Sox10-Venus transgenic mouse were used to visualize enteric neural crest cells in real time. This study aims to establish a novel mouse model of Sox10-Venus/Ncx mouse to study the pathogenesis of IND.

Methods: Sox10-Venus/Ncx (Ncx) (n = 8) mice and Sox10-Venus/Ncx controls (control) (n = 8) were euthanized at 4-5 weeks old, and excised intestines were examined with fluorescence microscopy. Immunohistochemistry was performed on tissue sections with neural marker Tuj1.

Results: Ncx mice exhibited dilated cecum and small intestine. Body weight of Ncx mice was lower with higher ratio of small intestine length relative to body weight. The neural network (Sox10-Venus) was observed along the intestine wall in Ncx and control mice without staining. Ectopic and increased expression of Tuj1 was observed in both small intestine and proximal colon of Ncx mice.

Conclusion: This study has established a reliable animal model that exhibits characteristics similar to patients with IND. This novel mouse model can allow the easy visualization of ENS in a time- and cost-effective way to study the pathogenesis of IND.

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Source
http://dx.doi.org/10.1007/s00383-023-05585-wDOI Listing

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