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Alterations in cecal microbiota and intestinal barrier function of laying hens fed on fluoride supplemented diets
Abstract
The objective of this study was to investigate the effects of fluorine at levels of 31, 431, 1237 mg/kg feed on cecum microbe, short-chain fatty acids (SCFAs) and intestinal barrier function of laying hens. The results showed that the intestinal morphology and ultrastructure were damaged by dietary high F intake. The mRNA expression levels of zonula occludens-1, zonula occludens-2, claudin-1, and claudin-4 were decreased in jejunum and ileum. However, the concentrations of serum diamine oxidase, and D-lactic acid and intestinal contents of interleukin 1 beta, interleukin 6, and Tumor necrosis factor-alpha were increased. Consistent with this, dietary high F intake altered the cecum microbiota, with increasing the concentration of pathogens, such as Proteobacteria and Escherichia-Shigella, as well as, decreasing the contents of beneficial bacteria, such as Lactobacillus, and expectedly, reduced the SCFAs concentrations. In conclusion, the actual results confirmed that (1) high dietary F intake could damage the intestinal structure and function, with impaired intestinal barrier and intestinal inflammation, and (2) destroy the cecum microbial homeostasis, and decrease the concentrations of SCFAs, which aggravate the incidence of intestinal inflammation in laying hens.
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In the citing paper
“Birds exposed to 1200 and 400 mg L–1 NaF for 59 days had downregulated expression levels of SIgA, mucin 2 (MUC2), Zonula occludens-2, and claudin-4.42,43”
From Effect of Fluoride on Gut Microbiota: A Systematic Review (2025) · cites this paper as [42]
In the citing paper
“Silkworm39,68 and bird42,43 models also showed a similar effect with a reduction in energy metabolic enzymes and SCFAs, respectively, at higher fluoride doses (200, 750, and 1200 mg L–1 NaF)”
From Effect of Fluoride on Gut Microbiota: A Systematic Review (2025) · cites this paper as [42]
In the citing paper
“but the production of proinflammatory cytokines was accelerated”
From Effect of Fluoride on Gut Microbiota: A Systematic Review (2025) · cites this paper as [42]
In the citing paper
“as well as higher abundance of E coli.42”
From Effect of Fluoride on Gut Microbiota: A Systematic Review (2025) · cites this paper as [42]
In the citing paper
“Silkworm39,68 and bird42,43 models also showed a similar effect with a reduction in energy metabolic enzymes and SCFAs, respectively, at higher fluoride doses (200, 750, and 1200 mg L–1 NaF)”
From Effect of Fluoride on Gut Microbiota: A Systematic Review (2025) · cites this paper as [42]
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Cited by
Sorted by citations
Effect of Fluoride on Gut Microbiota: A Systematic Review
Yasin, M., Zohoori, F. V., Kumah, E. A., Subramanian, M., Dean, P., & Orr, C. H. (2025) · Nutrition Reviews · doi:10.1093/nutrit/nuae202 · Cited by 8
Metadata
- Authors
- Miao, L., Gong, Y., Li, H., Xie, C., Xu, Q., Dong, X., Elwan, H. A. M., & Zou, X.
- Venue
- Ecotoxicology and Environmental Safety
- Publisher
- Elsevier BV
- Published
- 2020-04
- Volume
- 193
- Pages
- 110372
- ISSN
- 0147-6513
- Cited by
- 45
- References
- 0
- Language
- en
- Licence
- Funders
- Modern Argo-Industry Technology Research System of China (CARS-40-K10)
- Leading Innovation Team Project of South Taihu Elite Program
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