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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-β4 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-β4, IL-17 and for immunohistochemistry. The relative mRNA expression of TGF-β4 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-β4 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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: Characterization of lung pathology, persistence of variable surface protein antigens and local immune response Acta Vet. Scand. 54 , 9 . Knolle , P. , Löhr , H. , Treichel , U. , Dienes , H

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.: The role of enteropathogenic infection, local immunity, and autosensibilisation in pathogenesis of acute surgical diseases of peritoneal cavity by the example of acute appendicitis. Klin. Khir., 2004, 8 , 19

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European Journal of Microbiology and Immunology
Authors: N. V. Sridevi, A. M. Shukra, B. Neelakantam, J. Anilkumar, M. Madhanmohan, S. Rajan, Dev Chandran and V. A. Srinivasan PhD

References 1. K.B. Renegar P.A. Small 1991 Passive transfer of local

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Orvosi Hetilap
Authors: Olivér Rosero, Tibor Kovács, Péter Ónody, László Harsányi and Attila Szijártó

., Laissue, J. A.: Bacterial translocation in the normal human appendix parallels the development of the local immune system. Ann. N.Y. Acad. Sci., 2004, 1029 , 337–343. Takesue, Y., Ohge, H., Uemura, K., et al

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Lett. 2016; 590: 1602–1613. 56 Liu L, Wang Y, Fan H, et al. MicroRNA-181a regulates local immune balance by inhibiting proliferation and immunosuppressive properties of

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) 72. Sauer A , Rochet E , Lahmar I , Brunet J , Sabou M , et al.: The local immune response to intraocular Toxoplasma re-challenge: less pathology and better

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Acta Microbiologica et Immunologica Hungarica
Authors: Fatema Moni Chowdhury, Mohammed Ziaur Rahman, Md Murshed Hasan Sarkar, Fazle Rabbi, Sirajul Islam Khan, Chowdhury Rafiqul Ahsan and Nils-Kåre Birkeland

. , Tang , D. B. , Bendiuk , N. O. , Taylor , D. N. , Powell , C. J. : Local immune response and

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Acta Microbiologica et Immunologica Hungarica
Authors: Mona Abdel Fattah Razin, Ahmed Osman, Mohamed Ahmed Ali, Mahmoud Mohamed Bahgat and Amany Sayed Maghraby

of the IMI to induce local immune responses in the draining lymph node unlike the uneasy stimulation of the distal lymphoid organs in case of IPI which is always accompanied by systemic dilution of the antigens. E. purpurea

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-3841.2011.02416.x 55. Han Z , Willer T , Pielsticker C , Gerzova L , Rychlik I , Rautenschlein S . Differences in host breed and diet influence colonization by Campylobacter jejuni and induction of local immune responses in chicken . Gut Pathog

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