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Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway

  • Authors:
    • Jiabao Lu
    • Boye Dong
    • Ailan Chen
    • Feng He
    • Baifu Peng
    • Zixin Wu
    • Jie Cao
    • Wanglin Li
  • View Affiliations / Copyright

    Affiliations: Department of Colorectal Surgery, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, Guangdong 510180, P.R. China, Department of Cardiology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, P.R. China, Department of Colorectal Surgery, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong 510180, P.R. China
    Copyright: © Lu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2021-2028
    |
    Published online on: January 11, 2019
       https://doi.org/10.3892/mmr.2019.9848
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Abstract

Increasing evidence suggests that intestinal microbiota have critical function in the pathogenesis of inflammatory bowel disease. This present study investigated the effects of Escherichia coli (E. coli) in mice with dextran sulfate sodium (DSS)‑induced colitis. Furthermore, Toll‑like receptor 4 (TLR4) and nuclear factor‑κB (NF‑κB) gene expression was measured by reverse transcription‑quantitative polymerase chain reaction. In total, two experiments were performed. In the first experiment, four groups were established in BALB/c mice: i) Group A, control (no treatments); ii) group B, DSS‑induced colitis; iii) group C, DSS‑induced colitis bacteria depleted (BD) mice; and iv) group D, E. coli‑treated DSS‑induced colitis BD mice. In the second experiment, there were three groups: i) Group A1, control C57BL/6 mice; ii) group B1, E. coli‑treated DSS‑induced colitis BD C57BL/6 mice; and iii) E. coli‑treated DSS‑induced colitis BD TLR4‑/‑ mice. Clinical outcomes, colon and immune histopathology and tissue myeloperoxidase activity were assessed. Mice with DSS‑induced colitis that were treated with E. coli exhibited enhanced recovery, with significantly improved clinical and histological scores compared with the DSS only group. The mRNA expression of TLR4 and NF‑κB in the E. coli‑treated group was also significantly higher. These effects were abolished in TLR4‑/‑ mice, suggesting that E. coli may have promoted recovery through the TLR4 pathway. The present study indicated that E. coli promoted recovery from DSS‑induced colitis in mice, potentially through activation of the TLR4/NF‑κB signaling pathway.
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Copy and paste a formatted citation
Spandidos Publications style
Lu J, Dong B, Chen A, He F, Peng B, Wu Z, Cao J and Li W: Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway. Mol Med Rep 19: 2021-2028, 2019.
APA
Lu, J., Dong, B., Chen, A., He, F., Peng, B., Wu, Z. ... Li, W. (2019). Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway. Molecular Medicine Reports, 19, 2021-2028. https://doi.org/10.3892/mmr.2019.9848
MLA
Lu, J., Dong, B., Chen, A., He, F., Peng, B., Wu, Z., Cao, J., Li, W."Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway". Molecular Medicine Reports 19.3 (2019): 2021-2028.
Chicago
Lu, J., Dong, B., Chen, A., He, F., Peng, B., Wu, Z., Cao, J., Li, W."Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway". Molecular Medicine Reports 19, no. 3 (2019): 2021-2028. https://doi.org/10.3892/mmr.2019.9848
Copy and paste a formatted citation
x
Spandidos Publications style
Lu J, Dong B, Chen A, He F, Peng B, Wu Z, Cao J and Li W: Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway. Mol Med Rep 19: 2021-2028, 2019.
APA
Lu, J., Dong, B., Chen, A., He, F., Peng, B., Wu, Z. ... Li, W. (2019). Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway. Molecular Medicine Reports, 19, 2021-2028. https://doi.org/10.3892/mmr.2019.9848
MLA
Lu, J., Dong, B., Chen, A., He, F., Peng, B., Wu, Z., Cao, J., Li, W."Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway". Molecular Medicine Reports 19.3 (2019): 2021-2028.
Chicago
Lu, J., Dong, B., Chen, A., He, F., Peng, B., Wu, Z., Cao, J., Li, W."Escherichia coli promotes DSS‑induced murine colitis recovery through activation of the TLR4/NF‑κB signaling pathway". Molecular Medicine Reports 19, no. 3 (2019): 2021-2028. https://doi.org/10.3892/mmr.2019.9848
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