Abstract:
BACKGROUND:Although clinical and experimental studies have demonstrated a correlation between obstructive jaundice and the development of sepsis, the mechanism has not been fully elucidated. PURPOSE:The aim of this study was to investigate the influence of biliary obstruction on bacterial translocation as a possible source of infection in cases of obstructive jaundice. MATERIAL AND METHODS:Two groups of 12 Wistar rats were examined: rats subjected to common bile duct (CBD) ligation (group A) and rats subjected to a sham operation (group B). After 7 days, blood samples were taken and liver, spleen, and mesenteric lymph nodes (MLNs) from the ileocecal area were removed, divided into small pieces, and cultured. Quantitative culture results were determined by the number of colony-forming units (CFU) per milliliter of homogenate. Bacterial translocation was defined as the presence of a positive culture of MLNs, blood, liver, and/or spleen. Samples for histopathological examination were taken from the mucosa of the ileum and the colon and evaluated for inflammatory and destructive changes. RESULTS:There was no evidence of bacterial translocation to MLNs, blood, spleen, or liver detected in any of the 12 sham-operated control rats. In contrast, bacterial translocation was demonstrated in 8 of the 12 CBD-ligated rats (P < 0.01). In all eight cases in which translocation occurred, Escherichia coli were cultured from the MLNs. There were no histological changes in the mucosal samples of the control animals. In the CBD-ligated rats, hyperemia, vacuolization, reduction of goblet cells, decreased mitotic activity, and infiltration by lymphocytes and polymorphonuclear leukocytes (PMNLs) were detected. Cases in which translocation occurred were significantly associated with decreased mitotic activity in the colon (r = -0.5, P < 0.01) and higher infiltration by PMNLs in the ileum (r = -0.62, P < 0.05). CONCLUSION:Obstructive jaundice in a rat model predisposes to bacterial translocation. This suggests a mechanism whereby jaundiced patients are susceptible to septic complication.
journal_name
Hepatol Intjournal_title
Hepatology internationalauthors
Abdeldayem H,Ghoneim E,Refaei AA,Abou-Gabal Adoi
10.1007/s12072-007-9018-1subject
Has Abstractpub_date
2007-12-01 00:00:00pages
444-8issue
4eissn
1936-0533issn
1936-0541journal_volume
1pub_type
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