Skip to main content
Log in

Effects of a probiotic intervention on Escherichia coli and high-fat diet-induced intestinal microbiota imbalance

  • Applied microbial and cell physiology
  • Published:
Applied Microbiology and Biotechnology Aims and scope Submit manuscript

Abstract

Obesity is often associated with intestinal microbiota imbalance and increased Gram-negative bacteria characterized by higher endotoxin levels. Therefore, a study on the joint effects of a high-fat diet and Gram-negative bacteria prechallenge might provide further information on the interactive effects of intestinal microbiota and obesity as well as the effects of a probiotic intervention on these processes. This study focused on the joint effects of a high-fat diet and Escherichia coli on mouse inflammatory cytokines, intestinal microbiota, hepatic pathological changes, and the alleviating capacity of probiotics (Lactobacillus plantarum, Bifidobacterium breve, and Lactobacillus fermentum). Our results showed that E. coli administration and the high-fat diet exacerbated the inflammatory syndrome by increasing the visceral fat content, the inflammatory cell infiltration, and intestinal microbiota disorder in mice. E. coli administration caused a decrease in short-chain fatty acids in mouse feces, and probiotics effectively improved this phenomenon. Compound probiotic intervention reduced LPS and IL-1β levels, while increased IL-10 levels in mice improved the degeneration and inflammatory infiltration of mouse liver cells. The intestinal microbiota showed great differences at 3 weeks and 6 weeks post-administration. High fat and E. coli alone or in combination caused intestinal microbiota disorder, with increased harmful bacteria, and the probiotics effectively improved the intestinal flora structure and increased the fecal short-chain fatty acid (SCFA) content. In conclusion, a high-fat diet and Gram-negative bacteria challenge exacerbated the inflammatory syndrome, which can be alleviated by compound probiotic intervention.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

Similar content being viewed by others

References

Download references

Funding

This study was funded by the Heilongjiang Province Natural Science Foundation of China (C2016049) and the Harbin City Technology Bureau Youth Talented Person Project (RC2017QN020010).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Xiuliang Li.

Ethics declarations

Animal experiments were carried out in compliance with the guidelines for the care and use of laboratory animals and the institutional ethical guidelines in China.

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Electronic supplementary material

ESM 1

(PDF 138 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Sun, Q., Zhang, S., Liu, X. et al. Effects of a probiotic intervention on Escherichia coli and high-fat diet-induced intestinal microbiota imbalance. Appl Microbiol Biotechnol 104, 1243–1257 (2020). https://doi.org/10.1007/s00253-019-10304-4

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00253-019-10304-4

Keywords

Navigation