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01.02.2016 | Original Contribution

Bifidobacterium pseudocatenulatum CECT7765 promotes a TLR2-dependent anti-inflammatory response in intestinal lymphocytes from mice with cirrhosis

verfasst von: Alba Moratalla, Isabel Gómez-Hurtado, Ángela Moya-Pérez, Pedro Zapater, Gloria Peiró, José M. González-Navajas, Eva Maria Gómez Del Pulgar, José Such, Yolanda Sanz, Rubén Francés

Erschienen in: European Journal of Nutrition | Ausgabe 1/2016

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Abstract

Background

Intestinal homeostasis plays an important role in bacteria-derived complications in cirrhosis. Intestinal lymphocytes are responsible for immune effector functions and can be modulated by certain probiotics. We evaluate the interaction between Bifidobacterium pseudocatenulatum CECT7765 and intestinal lymphocytes in mice with cirrhosis.

Animals and methods

Cirrhosis was induced by intragastrical administration of carbon tetrachloride in Balb/C mice. One week prior to laparotomy, animals received B. pseudocatenulatum CECT7765 (10⁷, 10⁹ or 10¹⁰ cfu/daily) or placebo. Chemokine receptor and cytokine expression were evaluated in intestinal lymphocytes. Gut permeability was studied by FITC-LPS recovery in vivo. Luminal antigens, inflammation and functional markers were evaluated in liver samples.

Results

Bifidobacterium pseudocatenulatum CECT7765 decreased the expression of pro-inflammatory chemokine receptors CCR6, CCR9, CXCR3 and CXCR6 in intestinal lymphocytes from cirrhotic mice in a concentration-dependent manner. The bifidobacterial strain induced a shift towards an anti-inflammatory cytokine profile in this cell subset. B. pseudocatenulatum CECT7765-induced inflammatory modulation was TLR2-mediated, as in vitro TLR2 blockade inhibited the reduction of TNF-alpha and its receptors and the increase of IL-10 and IL-10 receptor secretion. The recovery rate of administered fluorescence-labelled endotoxin was significantly and dose-dependently lowered with the bifidobacterial strain. The reduced intestinal permeability was associated with a decreased burden of bacterial antigens in the liver of mice treated with B. pseudocatenulatum CECT7765. Liver function and inflammation were improved with the use of the bifidobacterial strain at the highest dose tested (10¹⁰ cfu).

Conclusion

Bifidobacterium pseudocatenulatum CECT7765 improves gut homeostasis and prevents gut-derived complications in experimental chronic liver disease.

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Titel: Bifidobacterium pseudocatenulatum CECT7765 promotes a TLR2-dependent anti-inflammatory response in intestinal lymphocytes from mice with cirrhosis
verfasst von: Alba Moratalla
Isabel Gómez-Hurtado
Ángela Moya-Pérez
Pedro Zapater
Gloria Peiró
José M. González-Navajas
Eva Maria Gómez Del Pulgar
José Such
Yolanda Sanz
Rubén Francés
Publikationsdatum: 01.02.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Nutrition / Ausgabe 1/2016
Print ISSN: 1436-6207
Elektronische ISSN: 1436-6215
DOI: https://doi.org/10.1007/s00394-015-0837-x

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