Influence of oral application of Enterococcus faecium AL41 on TGF-ß4 and IL-17 expression and immunocompetent cell distribution in chickens challenged with Campylobacter jejuni.
Acta Vet Hung
; 65(3): 317-326, 2017 09.
Article
em En
| MEDLINE
| ID: mdl-28956488
ABSTRACT
Campylobacteriosis is mainly caused by infection with Campylobacter jejuni following consumption or handling of Campylobacter-contaminated poultry meat. The aim of this study was to investigate the effect of probiotic Enterococcus faecium AL41 on TGF-ß4 and IL-17 expression and on immunocompetent cell distribution after C. jejuni infection in broiler chicken, as a second part of the previous study of Karaffová et al. (2017). Accordingly, day-old chicks were randomly divided into four experimental groups of 10 chicks each (n = 10) control (C), E. faecium AL41 (EFAL41), C. jejuni CCM6191 (CJ), and combined E. faecium AL41 + C. jejuni CCM6191 (EFAL41 + CJ). Samples from the caecum were collected on days 4 and 7 post Campylobacter infection (dpi), for the isolation of mRNA of TGF-ß4, IL-17 and for immunohistochemistry. The relative mRNA expression of TGF-ß4 was upregulated in the combined (EFAL41 + CJ) group compared to other groups during both samplings, but the expression of IL-17 was downregulated. Similarly, the highest density of CD3+ was detected in the combined group at 7 dpi, but the number of IgA+ cells was increased in both groups with EFAL41. It was concluded that the EFAL41 probiotic E. faecium strain can modulate the expression of selected cytokines (upregulation of TGF-ß4 but downregulation of IL-17 relative expression), and activate IgA-producing cells in the caeca of chicks infected with C. jejuni CCM6191.
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Texto completo:
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Infecções por Campylobacter
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Galinhas
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Campylobacter jejuni
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Fator de Crescimento Transformador beta
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Enterococcus faecium
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Interleucina-17
Limite:
Animals
Idioma:
En
Revista:
Acta Vet Hung
Ano de publicação:
2017
Tipo de documento:
Article