To study the relationship between stress and the endoscopic diagnosis of erosive prepyloric changes (EPC), upper gastrointestinal endoscopy was performed twice in 19 cadets from the Military Academy, once in a 'non-stressed' situation and once after exposure to a standardized stress model. Five biopsy specimens per examination were obtained from the prepyloric mucosa, and the features of acute and chronic inflammation, erosion, and campylobacter-like structures (CLS) were evaluated. The endoscopy showed a significant (p less than 0.001) aggravation of EPC after stress. The histologic examination showed an increase of acute inflammation (p less than 0.05) and a higher density of CLS (p less than 0.01) after stress, as compared with the findings under non-stressed conditions. No association was observed between CLS and EPC. The study sheds new light on the pathogenesis of EPC, as it shows that EPC is aggravated during stress.
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