Escherichia coli lipopolysaccharides decrease molecular expression and activity of disaccharidases and aminopeptidases in weaned pigs
ABSTRACT: Escherichia coli populations in the gut increase after weaning, releasing cell wall lipopolysaccharides (LPS), which are potent pro-inflammatory substances. Objective: this study evaluated LPS intake effects on protein expression and activity of intestinal disaccharidases and aminopetidase...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Colombia |
| Institución: | Universidad de Antioquia |
| Repositorio: | Repositorio UdeA |
| Idioma: | inglés |
| OAI Identifier: | oai:bibliotecadigital.udea.edu.co:10495/8005 |
| Acceso en línea: | http://hdl.handle.net/10495/8005 |
| Access Level: | acceso abierto |
| Palabra clave: | Digestive enzymes Intestinal villi RT- PCR (Transcripción reversa-PCR) Swine Escherichia coli Lipopolisacarido Cerdos destetados Enzimas digestivas |
| Sumario: | ABSTRACT: Escherichia coli populations in the gut increase after weaning, releasing cell wall lipopolysaccharides (LPS), which are potent pro-inflammatory substances. Objective: this study evaluated LPS intake effects on protein expression and activity of intestinal disaccharidases and aminopetidases. Methods: sixty-four pigs (weaning age: 21 d) were fed a basal diet with added LPS (0.0, 0.3, 0.5, and 1.0 μg LPS/mg feed) during 10 days post-weaning. Pigs were slaughtered on days 1, 5, 7, and 10 post-weaning to assess small intestine molecular expression and enzyme activity. A randomized block design in a 4x4 factorial arrangement was used. Results: intestinal enzyme expression and activity was lower in pigs fed the highest LPS level (p < 0.01). Enzyme values were lowest at day 10 (p < 0.01). The highest gene expression and enzyme activity was observed in duodenum (p < 0.01). Conclusions: data from this study suggest that LPS from E. coli decreases intestinal enzyme expression and activity. |
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