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KMID : 0603820130190020142
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Journal of Experimental & Biomedical Science
2013 Volume.19 No. 2 p.142 ~ p.146
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Analysis of Inflammatory Cytokines from the Cecum and Proximal Colon of Mice Infected with Enterotoxigenic Bacteroides fragilis
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Hwang Soon-Jae
Lee Min-Ho
Gwon Sun-Yeong
Lee Seung-Hyung
Jung Dong-ju
Rhee Ki-Jong
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Abstract
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Enterotoxigenic Bacteroides fragilis (ETBF) causes inflammatory diarrhea in humans and animals and is also implicated in colorectal cancer. ETBF-infected mice exhibit a prominent large intestinal inflammation characterized by neutrophil infiltration and induction of the Th17 response. In this study, we examined differences in the secreted cytokine profile of the cecum and proximal colon of ETBF-infected mice using an antibody array. Of the cytokines examined, we found that the cecal tissues from ETBF-infected mice secreted elevated levels of G-CSF, IL-6, IL-17 and LIX compared to non-toxigenic Bacteroides fragilis (NTBF) and Mock infected mice. The proximal colon tissues from ETBF-infected mice secreted higher levels of G-CSF, IL-6, KC, LIX, MIP-1g and MCP-1. This study demonstrates that the cecum and colon should be considered separately when assays are used to determine immune responsiveness to enteric infections.
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KEYWORD
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Enterotoxigenic Bacteroides fragilis, Protein array, Cytokine, Colitis, Toxin
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