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Characterization of the bile and gall bladder microbiota of healthy pigs

AuthorsJiménez, Esther; Sánchez García, Borja ; Farina, Annarita; Margolles Barros, Abelardo ; Rodríguez Gómez, Juan M.
Issue Date21-Oct-2014
CitationMicrobiologyOpen 3(6): 937-949 (2014)
AbstractMicrobiologyOpen published by John Wiley & Sons Ltd. Bile is a biological fluid synthesized in the liver, stored and concentrated in the gall bladder (interdigestive), and released into the duodenum after food intake. The microbial populations of different parts of mammal's gastrointestinal tract (stomach, small and large intestine) have been extensively studied; however, the characterization of bile microbiota had not been tackled until now. We have studied, by culture-dependent techniques and a 16S rRNA gene-based analysis, the microbiota present in the bile, gall bladder mucus, and biopsies of healthy sows. Also, we have identified the most abundant bacterial proteins in the bile samples. Our data show that the gall bladder ecosystem is mainly populated by members of the phyla Proteobacteria, Firmicutes, and Bacteroidetes. Furthermore, fluorescent in situ hybridization (FISH) and transmission electron microscopy (TEM) allowed us to visualize the presence of individual bacteria of different morphological types, in close association with either the epithelium or the erythrocytes, or inside the epithelial cells. Our work has generated new knowledge of bile microbial profiles and functions and might provide the basis for future studies on the relationship between bile microbiota, gut microbiota, and health. © 2014 The Authors.
Publisher version (URL)https://doi.org/10.1002/mbo3.218
Identifiersissn: 2045-8827
Appears in Collections:(IPLA) Artículos
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