Abstract
Salmonella infection of the gastrointestinal tract (GT) results in fluid secretion and inflammation. In contrast, cholera toxin (CT) induces fluid secretion but no inflammation. Using a murine ligated intestinal loop model, we investigated cytokine production (interleukin-1 [IL-1], IL-2, IL-4, IL-6, IL-10, gamma interferon, and tumor necrosis factor alpha) in the GT following exposure to these agents. Salmonella typhimurium induced a Th1-like cytokine profile in loops obtained from either nonimmune mice or Salmonella-immunized mice. CT induced only IL-6 and IL-10 production in ligated loops from nonimmune mice but induced a Th2-like cytokine profile in ligated loops obtained from CT-immunized mice. These results show that CT and S. typhimurium induce very different cytokine profiles in the GT.
MeSH Terms
Animals
Cholera Toxin/immunology
Cytokines/analysis,genetics,immunology
Enzyme-Linked Immunosorbent Assay
Intestines/chemistry,immunology
Ligation
Mice
Mice, Inbred CBA
Polymerase Chain Reaction
RNA, Messenger/analysis
Salmonella typhimurium/immunology
Chemicals
Cytokines
RNA, Messenger
Cholera Toxin
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Klimpel G R
Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston 77555-1019.
Asuncion M
Haithcoat J
Niesel D W
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