Document Detail

Effect of repeated cycles of acute esophagitis and healing on esophageal peristalsis, tone, and length.
MedLine Citation:
PMID:  15637176     Owner:  NLM     Status:  MEDLINE    
Severe esophagitis is associated with motor abnormalities in the esophageal body and lower esophageal sphincter. Reflux disease involves repeated episodes of mucosal inflammation and spontaneous or treatment-induced healing. The aims of this study were 1) to further assess changes induced by acute esophagitis on esophageal peristalsis, tone, and shortening and 2) to assess the effect of repeated sequences of acute esophagitis-healing on these motor parameters. Experiments were performed on adult cats. Esophageal manometry and barostat were performed before, 24 h after, and every 7 days after intraesophageal acid perfusion (0.1 N HCl, 80 min). Esophageal length was measured during manometry, and compliance of the esophageal body was assessed with barostat. The identical protocol was performed 8 and 16 wk after the first acid perfusion. The degree of esophageal mucosal damage was evaluated by endoscopy, histopathology, and myeloperoxidase activity. Acid perfusion induced severe esophagitis. At 24 h, distal peristaltic contractions disappeared, lower esophageal sphincter pressure was reduced by 60%, the esophagus length was 1-2 cm shorter, and esophageal compliance was reduced by 30%. Most parameters recovered in 4 wk. Subsequent repeated acute injuries induced similar endoscopic esophagitis but a different pattern of inflammatory infiltration and fibrosis in the mucosa and muscle layers, resulting in milder motor disturbances. Acute experimental esophagitis provokes severe but reversible hypomotility. Spaced repeated acute injuries provoke milder motor effects, suggesting an adaptive response.
X Zhang; K Geboes; I Depoortere; J Tack; J Janssens; D Sifrim
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-01-06
Journal Detail:
Title:  American journal of physiology. Gastrointestinal and liver physiology     Volume:  288     ISSN:  0193-1857     ISO Abbreviation:  Am. J. Physiol. Gastrointest. Liver Physiol.     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-05-13     Completed Date:  2005-06-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  100901227     Medline TA:  Am J Physiol Gastrointest Liver Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  G1339-46     Citation Subset:  IM    
Faculty of Medicine KU Leuven, Lab G-I Physiopathology, O and N Gasthuisberg, 7th floor, Herestraat 49, 3000 Leuven, Belgium.
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MeSH Terms
Acute Disease
Disease Models, Animal
Esophagitis / complications*,  physiopathology,  veterinary
Esophagus / pathology*,  physiology*
Mucous Membrane / pathology
Peristalsis / physiology*
Wound Healing

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