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Protective effect of Bifidobacterium pseudocatenulatum CECT 7765 against induced bacterial antigen translocation in experimental cirrhosis
Author(s) -
Moratalla Alba,
GómezHurtado Isabel,
Santacruz Arlette,
Moya Ángela,
Peiró Gloria,
Zapater Pedro,
GonzálezNavajas José M.,
Giménez Paula,
Such José,
Sanz Yolanda,
Francés Rubén
Publication year - 2014
Publication title -
liver international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.873
H-Index - 110
eISSN - 1478-3231
pISSN - 1478-3223
DOI - 10.1111/liv.12380
Subject(s) - cirrhosis , medicine , placebo , bifidobacterium , gastroenterology , biology , pharmacology , endocrinology , immunology , pathology , lactobacillus , biochemistry , alternative medicine , fermentation
Background & Aims Intervention in the gut ecosystem is considered as a potential strategy to treat liver diseases and their complications. We have evaluated the effects of Bifidobacterium pseudocatenulatum CECT 7765 on bacterial translocation and the liver status in experimental cirrhosis. Animals & Methods Liver damage was induced in Balb/c mice by weight‐controlled oral administration of carbon tetrachloride. Laparotomies were performed at week 12. One week prior to laparotomy, animals received B. pseudocatenulatum CECT 7765 (10 9 cfu/daily) or placebo intragastrically. All animals received Escherichia coli (10 7 cfu/single dose) intragastrically 24 hours before laparotomy. A group of naïve non‐treated animals was included as control. Liver tissue specimens, mesenteric lymph nodes, intestinal content and blood were collected. Liver histology, profibrogenic genes expression, bacterial DNA translocation, serum endotoxaemia and liver cytokine levels were measured. Results Bifidobacterium pseudocatenulatum CECT 7765 showed no significant effect on structural liver damage, as determined by histological evaluation, alpha‐smooth muscle actin distribution, profibrogenic gene expression levels, total hydroxyproline levels and malon dialdehyde production compared with mice receiving placebo. Interestingly, bacterial DNA translocation and serum endotoxin levels were significantly decreased in mice receiving the Bifidobacterium strain compared with placebo. Gut barrier integrity markers were up‐regulated in mice receiving B. pseudocatenulatum CECT 7765 and quantitatively correlated with intestinal gene copy numbers of the bifidobacterial strain. Gene expression levels of several anti‐inflammatory mediators were also increased in mice receiving B. pseudocatenulatum CECT 7765 compared with placebo. Conclusion Oral administration of B. pseudocatenulatum CECT 7765 is associated with improved gut barrier integrity and shows a beneficial effect against induced bacterial antigen translocation in the CC l 4 ‐model of cirrhosis.