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Published on: December 15, 2011
Effects of Spermidine on Mouse Gut Morphology, Metabolites, and Microbial Diversity
Dong-Mei Jiang1,2,3, Ze-Long Wang1,2,3, Jia-Di Yang4
1College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
Abstract:
Spermidine is a class of biologically active organic small molecules that play an important role in maintaining intestinal homeostasis. The specific objective of this study was to explore the effects of spermidine on intestinal morphology, metabolites, and microbial diversity in mice. We showed that 0.3 mmol/L of spermidine significantly promoted the growth of ileal villi (p < 0.05), and 3.0 mmol/L of spermidine significantly increased the body weight of mice and promoted the growth of jejunum villi (p < 0.05). The 16S rDNA sequencing results indicated that 3.0 mmol/L of spermidine affected the balance of the intestinal flora by increasing the abundance of intestinal Lactic acid bacteria and reducing the abundance of harmful bacteria (Turicibacter and Alistipes). Additionally, spermidine affects the levels of microbial metabolites such as succinic acid and Pantetheine. In summary, spermidine affects intestinal morphology and regulates intestinal flora and metabolites, and this study has provided a new understanding of spermidine's effects on the intestinal tract.
Insights
Spermidine promotes intestinal health by enhancing villi growth and body weight in mice. It also positively influences gut microbiota balance and key metabolites, offering new insights into its role in intestinal homeostasis.
Area of Science:
- Gastroenterology
- Microbiology
- Metabolomics
Background:
- Spermidine, a naturally occurring polyamine, is crucial for maintaining intestinal homeostasis.
- Understanding spermidine's specific effects on the gut is essential for potential therapeutic applications.
Purpose of the Study:
- To investigate the impact of spermidine on intestinal morphology, microbial diversity, and metabolite profiles in a mouse model.
- To elucidate the dose-dependent effects of spermidine on the gut.
Main Methods:
- Administration of varying concentrations of spermidine (0.3 mmol/L and 3.0 mmol/L) to mice.
- Assessment of intestinal villi growth (ileum and jejunum) and body weight.
- 16S rDNA sequencing to analyze gut microbial composition and abundance.
- Metabolomic analysis to identify changes in microbial metabolites.
Main Results:
- Spermidine significantly promoted ileal villi growth at 0.3 mmol/L and increased body weight and jejunum villi growth at 3.0 mmol/L.
- 3.0 mmol/L spermidine altered gut microbiota by increasing Lactic acid bacteria and decreasing harmful bacteria like Turicibacter and Alistipes.
- Spermidine influenced levels of microbial metabolites, including succinic acid and Pantetheine.
Conclusions:
- Spermidine positively modulates intestinal morphology, gut microbiota composition, and metabolite profiles.
- This study provides novel insights into spermidine's beneficial effects on the intestinal tract and its role in maintaining gut health.
