title: Promotion of bacterial translocation by major liver resection in obstructive jaundice in rats colonised predominantly with indigenous Escherichia coli.
abstract: The influence of major liver resection in obstructive jaundice on bacterial translocation was evaluated in rats that were colonised predominantly with a genetically labelled strain of Escherichia coli. The strain, JNW14, originally isolated from rat faeces, was labelled with bacitracin, neomycin and streptomycin resistance markers. Fifty-two specific-pathogen-free male Wistar rats were divided into three experimental groups and were treated as follows: group 1 (n = 8), sham ligation of common bile duct; group 2 (n = 7), common bile duct ligation (CBDL); and group 3 (n = 37), 70% hepatectomy 7 days after CBDL. The rats were treated with the above antibiotics and then given E. coli strain JNW14 in their drinking water. Translocation of E. coli JNW14 from the gastrointestinal tract to the mesenteric lymph nodes (MLNs), lungs, liver, spleen and portal vein was evaluated in each group. In group 3 (CBDL plus hepatectomy), the incidence of translocation of E. coli JNW14 to the liver and spleen after hepatectomy was significantly higher than in groups 1 and 2. This result indicates that major liver resection in obstructive jaundice promotes bacterial translocation to systemic organs. Furthermore, the numbers of viable E. coli JNW14 in the MLNs in the lung culture-positive rats were significantly higher than those in the lung culture-negative rats, suggesting that lymphatic-thoracic duct systemic circulation is a major route of bacterial translocation.
authors.affiliation: *Department of Bacteriology and †First Department of Surgery, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Junji
authors.initials: J
authors.lastname: Narioka
authors.affiliation: *Department of Bacteriology and †First Department of Surgery, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Masaharu
authors.initials: M
authors.lastname: Nishi
authors.affiliation: *Department of Bacteriology and †First Department of Surgery, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Yorihiko
authors.initials: Y
authors.lastname: Ogata
authors.affiliation: *Department of Bacteriology and †First Department of Surgery, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Tomomi
authors.initials: T
authors.lastname: Kuwahara
authors.affiliation: *Department of Bacteriology and †First Department of Surgery, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Haruyuki
authors.initials: H
authors.lastname: Nakayama
authors.affiliation: *Department of Bacteriology and †First Department of Surgery, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Seiki
authors.initials: S
authors.lastname: Tashiro
authors.affiliation: *Department of Bacteriology and †First Department of Surgery, School of Medicine, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Yoshinari
authors.initials: Y
authors.lastname: Ohnishi
mesh_terms: D000410:Alanine Transaminase / Q000097:blood; D000818:Animals; D001219:Aspartate Aminotransferases / Q000097:blood; D018988:Bacterial Translocation / Q000502:physiology*; D001663:Bilirubin / Q000097:blood; D002779:Cholestasis / Q000382:microbiology / Q000601:surgery*; D004926:Escherichia coli / Q000502:physiology*; D004927:Escherichia coli Infections / Q000097:blood / Q000235:genetics / Q000382:microbiology; D006498:Hepatectomy / Q000009:adverse effects*; D008099:Liver / Q000382:microbiology; D008168:Lung / Q000382:microbiology; D008198:Lymph Nodes / Q000382:microbiology; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D013047:Specific Pathogen-Free Organisms; D013154:Spleen / Q000382:microbiology
chemical_list: D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D001663:Bilirubin