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Microbiota of the Large Intestine01:27

Microbiota of the Large Intestine

The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...

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Metagenomic Analysis of Intestinal Microbiota in Florated Rats.

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Summary

High fluorine intake significantly alters gut microbiota composition in Wistar rats, impacting species diversity and reducing beneficial Lactobacillus. This highlights fluorine

Keywords:
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Area of Science:

  • Microbiology
  • Toxicology
  • Animal Health

Background:

  • Gut microbiota plays a crucial role in animal health and metabolic diseases.
  • Intestinal microbiota is a complex organ system comprising trillions of microorganisms.
  • Fluorine exposure is linked to oxidative stress and cellular damage.

Purpose of the Study:

  • To evaluate the impact of high fluorine exposure on the intestinal microbiota of Wistar rats.
  • To assess oxidative stress markers and enzyme activities in rats with fluorine intoxication.

Main Methods:

  • Wistar rats were administered 100 ppm NaF in drinking water for 12 weeks.
  • Oxidative stress parameters (MDA) and antioxidant enzyme activities (CAT, SOD) were measured.
  • Intestinal microbiota composition was analyzed using V3-V4 16S rRNA gene sequencing.

Main Results:

  • Fluorine intoxication significantly increased malondialdehyde (MDA) levels, indicating oxidative stress.
  • Activities of catalase (CAT) and superoxide dismutase (SOD) enzymes significantly decreased.
  • Significant alterations in gut microbiota species diversity and composition were observed, notably a decrease in Lactobacillus species.

Conclusions:

  • High fluorine intake induces oxidative stress and alters gut microbiota in Wistar rats.
  • Fluorine exposure negatively impacts the intestinal microflora, particularly reducing beneficial Lactobacillus populations.
  • These findings suggest a link between fluorine toxicity and gut dysbiosis.