Intestinal expression of pro-infammatory cytokines induced by oral intake of lipopolysaccharide (LPS) from E. coli in weaned pigs

• Intestinal expression of pro-infammatory cytokines induced by oral intake of lipopolysaccharide (LPS) from E. coli in weaned pigs Enlace externo
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• Título: Intestinal expression of pro-infammatory cytokines induced by oral intake of lipopolysaccharide (LPS) from E. coli in weaned pigs
• Autor: Sanin Peña, David Esteban; Agudelo T, Jorge A;Forero D, Jorge; López Herrera, Albeiro; Muskus L, Carlos; Parra S, Jaime
• Publicación original: Revista Colombiana de Ciencias Pecuarias; Vol. 26, No. 2, 2013
• Descripción física: PDF
• Nota general:
  • Background: Treatments with lipopolysaccharide (LPS) from E. coli are an accepted way of inducing inflammation in immunological studies since they have the ability to activate a coordinate series of signs through the synthesis of pro-inflammatory cytokines such as interleukin 8 (IL-8), IL-18 and tumor necrosis factor alpha (TNF-?), which can cause significant changes in intestinal structure and functionality.
    Objective: the aim of this study was to evaluate the effect of adding LPS of E. coli on pro-inflammatory cytokine gene expression IL-8, IL-18 and TNF-? in early-weaned pigs.
    Methods:fieldwork was conducted at Centro San Pablo, belonging to the Universidad Nacional de Colombia with 32 pigs at 21 days of age, with 6.5 ± 0.5 kg of weight. Animals were fed with a basal diet supplemented with two levels of inclusion of LPS of E.coli serotype 0111:B4 (0 to 0.3 ?g/mg of food). Pigs were slaughtered in stages on days 1, 5, 7 and 10 postweaning and complete extraction of small intestine was made. Gene expression was evaluated by qPCR. Blocks at random in a factorial arrangement 2 x 4 were used as statistical design.
    Results: the basal diet (without addition of LPS) presented increase in mRNA expression (p < 0.01) of all the cytokines in jejunum for each post-weaning day, which suggests an inflammatory response and extensive tissue damage in pigs after early weaning. In diet 1 (with consumption of 0.3 ?g LPS / mg diet) cytokines TNF-?, IL-8 and IL-18 showed a significant increase in their levels of expression (p < 0.01). All cytokines presented significant increase (p < 0.01) in jejunum for each post-weaning day. Conclusion: The increase observed in the expression of TNF-? can be involved in the development of post-weaning diarrhea.
• Notas de reproducción original: Digitalización realizada por la Biblioteca Virtual del Banco de la República (Colombia)
• Notas:
  • Medellín (Colombia)
  • Resumen: Gut immunology; Intestinal villi, Pig weaning, RT-PCR, TNF-?.
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  • Colfuturo
• Forma/género: texto
• Idioma: inglés
• Institución origen: Biblioteca Virtual del Banco de la República
• Encabezamiento de materia:
  • Ciencias naturales y matemáticas; Ciencias naturales y matemáticas / Ciencias de la vida Biología