Obstructive jaundice alters LFA-1α expression in rat small intestine

Shyr Ming Sheen-Chen, Han Shiang Chen, Hsin Tsung Ho, Chih Chi Sheen, Wei Jen Chen, Hock Liew Eng

研究成果: 雜誌貢獻文章同行評審

9 引文 斯高帕斯(Scopus)

摘要

Translocation of bacteria and endotoxtin has long been documented in obstructive jaundice, and altered intestinal barrier function is considered to be one of the important mechanisms for this phenomenon. The regulation of gastrointestinal mucosal response to injury is thus of important clinical as well as biological relevance. Integrins play a critical role in enterocyte migration, which is essential to mucosal healing. This study is designed to evaluate the integrins status in obstructive jaundice. Male Sprague-Dawley rats (N = 37) were randomized to three groups. Group 1 (N = 12) underwent common bile duct ligation (CBDL), group 2 (N = 12) underwent common bile duct ligation with oral glutamine administration (CBDL + G), and group 3 (N = 13) underwent a sham operation (sham control). After seven days, segments of proximal jejunum and distal ileum were harvested, and cell surface immunohistochemical expression of LFA-1α and VLA-6 were evaluated and recorded. The staining intensities were graded on a scale of 0-4. Comparisons among the three groups were performed. There was no significant difference in VLA-6 staining on small intestine among the three groups (P > 0.05). There was also no significant difference in LFA-1α staining the on jejunum between group 1 (CBDL) and group 3 (sham control) (P > 0.05). However, the LFA-1α staining on the ileum in group 1 (CBDL) significantly decreased when compared with group 3 (sham control) (P = 0.008). With oral glutamine administration (0.2 g/kg body weight, once daily), LFA-1α staining on the ileum was significantly restored in group 2 (CBDL + G). In conclusion, obstructive jaundice for one week down-regulates LFA-1α expression on rat ileum. With oral glutamine administration, such down-regulation of LFA-1α expression on rat ileum can be restored. Such a phenomenon is intriguing and deserves further evaluation and elucidation.

原文英語
頁(從 - 到)1165-1170
頁數6
期刊Digestive Diseases and Sciences
48
發行號6
DOIs
出版狀態已發佈 - 6月 1 2003
對外發佈

ASJC Scopus subject areas

  • 生理學
  • 消化內科

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