Esophageal injury with external esophageal perfusion

Yan Li, John Wo, Ruifeng R. Su, Mukunda B. Ray, Whitney Jones, Robert C G Martin

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Background. External esophageal perfusion (EEP) with the idea that esophageal perfusion can be controlled with a single ingredient at a constant rate and concentration, might be used to dissect the injurious role of gastro-duodenal secretions for the progression from esophagitis to Barrett's esophagus (BE) and esophageal adenocarcinoma (EAC). This study is to evaluate the EEP rat model for esophagitis induced by using a mirco-osmotic pump with bile perfusion. Methods. Eighteen adult rats underwent the EEP procedure. Bile (0.5% bovine bile, pH 7.4) was used as perfusion agent and three types of perfusions were performed: 1 week perfusion, 2 weeks perfusion, and 4 weeks perfusion compared to saline perfusion and sham operation. Histological changes, cell proliferation, apoptosis, 8-hydroxy-deoxyguanosine (8-OH-dG) and Manganese superoxide dismutase (MnSOD) were observed after perfusion and compared. Results. The bile perfusion for 1 week, 2 weeks, and 4 weeks induced mucosa infiltration of inflammatory cells, basal cell hyperproliferation, and papillae hypertrophy in all animals. Histopathology and cellular changes consistent with the findings associated with reflux esophagitis. The apoptotic index, the proliferating index, and expression of 8-OH-dG were significantly increased in the esophageal mucosa compared to controls. MnSOD expression was decreased with bile perfusion compared to saline controls. Conclusions. The external esophageal perfusion model enabled precise control of the injurious agent. It induced the typical histological injury and cellular changes seen in severe reflux esophagitis. The cellular changes in apoptosis, proliferation and anti-oxidant defense make this model unique for reflux esophagitis studies. Further studies are needed to induce Barrett's esophagus and esophageal adenocarcinoma.

Original languageEnglish (US)
Pages (from-to)107-113
Number of pages7
JournalJournal of Surgical Research
Volume129
Issue number1
DOIs
StatePublished - Nov 2005
Externally publishedYes

Fingerprint

Perfusion
Wounds and Injuries
Bile
Peptic Esophagitis
Barrett Esophagus
Esophagitis
Superoxide Dismutase
Adenocarcinoma
Apoptosis
Deoxyguanosine
Oxidants
Hypertrophy
Mucous Membrane
Cell Proliferation

Keywords

  • Animal model
  • Esophagitis
  • Gastroesophageal reflux
  • Oxidative stress

ASJC Scopus subject areas

  • Surgery

Cite this

Li, Y., Wo, J., Su, R. R., Ray, M. B., Jones, W., & Martin, R. C. G. (2005). Esophageal injury with external esophageal perfusion. Journal of Surgical Research, 129(1), 107-113. https://doi.org/10.1016/j.jss.2005.04.018

Esophageal injury with external esophageal perfusion. / Li, Yan; Wo, John; Su, Ruifeng R.; Ray, Mukunda B.; Jones, Whitney; Martin, Robert C G.

In: Journal of Surgical Research, Vol. 129, No. 1, 11.2005, p. 107-113.

Research output: Contribution to journalArticle

Li, Y, Wo, J, Su, RR, Ray, MB, Jones, W & Martin, RCG 2005, 'Esophageal injury with external esophageal perfusion', Journal of Surgical Research, vol. 129, no. 1, pp. 107-113. https://doi.org/10.1016/j.jss.2005.04.018
Li, Yan ; Wo, John ; Su, Ruifeng R. ; Ray, Mukunda B. ; Jones, Whitney ; Martin, Robert C G. / Esophageal injury with external esophageal perfusion. In: Journal of Surgical Research. 2005 ; Vol. 129, No. 1. pp. 107-113.
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