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[Changes in the muscular layer and the intermuscular nerve plexus of the intestines in experimental peritonitis in
Abstract:
Changes in the muscular layer and intermuscular nervous plexus are studied histologically, histochemically and electron microscopically using the model of faecal rat peritonitis. Alterations characteristic of water metabolism disturbances (edema) up to the coagulation or colliquative necrosis development of individual cells are revealed in the muscular layer. Damage to the cholinergic structures which can be interpreted as a reversible partial morpho-functional cholinergic denervation is found in the intermuscular nervous plexus. The above changes are the structural basis of the intestinal paresis in peritonitis. These changes are reversible if an early (up to one day) elimination of the inflammatory process occurs.
Insights
Peritonitis causes muscular layer edema and cell necrosis, alongside nerve damage leading to intestinal paresis in rats. Prompt treatment can reverse these damaging effects.
Area of Science:
- Gastroenterology
- Pathology
- Neuroscience
Context:
- Peritonitis, an inflammation of the peritoneum, can lead to severe gastrointestinal dysfunction.
- Understanding the histological and neurological changes in the gut during peritonitis is crucial for effective treatment.
Purpose:
- To investigate the histological and histochemical changes in the muscular layer and intermuscular nervous plexus of the rat intestine during experimental faecal peritonitis.
- To elucidate the structural basis of intestinal paresis in peritonitis and assess the reversibility of these changes.
Summary:
- Faecal peritonitis in rats induces edema and necrosis in the intestinal muscular layer.
- Damage to cholinergic nerve structures results in reversible partial denervation of the intermuscular plexus.
- These observed changes correlate with the development of intestinal paresis.
Impact:
- The study identifies key structural alterations underlying intestinal paresis in peritonitis.
- It highlights the potential for reversibility of these pathological changes with early intervention.
- Findings provide insights into the pathophysiology of gastrointestinal dysfunction during sepsis.