Impact of the composition of gastric reflux bile acids on Barrett's oesophagus.

Abstract

BACKGROUND:

The effect of the composition of reflux bile acids, especially the ratio of hydrophobic to hydrophilic ones, on the development of Barrett's oesophagus has not been fully investigated in human studies.

AIMS:

To evaluate the influence of the bile acid composition of gastric juice on Barrett's oesophagus, a prospective study was designed.

METHODS:

Fifty patients with and 100 patients without Barrett's oesophagus were enrolled. For all enrolled patients, gastric juice was collected by the endoscopic procedure for bile acid analysis. The ratio of hydrophobic to hydrophilic bile acids (bile hydrophobicity ratio, BHR) was calculated from 6 kinds of bile acids analysed in gastric juice. The relationship between the ratio and clinico-pathological factors of Barrett's oesophagus was investigated.

RESULTS:

The mean of BHR of patients with Barrett's oesophagus was significantly higher than that of patients without Barrett's oesophagus (0.26 ± 0.05 vs. 0.08 ± 0.02, p<0.05). In multivariate analysis, a high BHR value was a predictor for the presence of Barrett's oesophagus (OR 5.74, p<0.001). In patients with Barrett's oesophagus, the BHR correlated with COX-2 protein expression and with accelerated cellular proliferation.

CONCLUSIONS:

Patients with Barrett's oesophagus had a higher BHR in the gastric juice than those without.

• Authors: Yoshiko Takahashi, Yuji Amano, Takafumi Yuki, Yuko Mishima, Yuji Tamagawa, Goichi Uno, Norihisa Ishimura, Shuichi Sato, Shunji Ishihara, Yoshikazu Kinoshita
• Journal: Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver (Dig Liver Dis) Vol. 43 Issue 9 Pg. 692-7 (Sep 2011) ISSN: 1878-3562 [Electronic] Netherlands
• PMID: 21466977 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2011 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.

Chemical References

• Bone Morphogenetic Protein 4
• Cholic Acids
• Cyclooxygenase 2
• PTGS2 protein, human

Topics

• Aged
• Aged, 80 and over
• Barrett Esophagus (complications, diagnosis, metabolism, pathology)
• Bile Reflux (complications)
• Bone Morphogenetic Protein 4 (metabolism)
• Cholic Acids (analysis)
• Cyclooxygenase 2 (metabolism)
• Female
• Gastric Juice (chemistry)
• Gastroesophageal Reflux (complications, metabolism)
• Humans
• Hydrophobic and Hydrophilic Interactions
• Logistic Models
• Male
• Middle Aged
• Predictive Value of Tests
• Prospective Studies
• Statistics, Nonparametric