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Dietary intervention impact on gut microbial gene richness
Aurélie Cotillard1, Sean P Kennedy, Ling Chun Kong
1Institut National de la Santé et de la Recherche Médicale, U872, Nutriomique, Équipe 7, Centre de Recherches des Cordeliers, Paris 75006, France.
Reduced gut microbial gene richness is linked to obesity, dys-metabolism, and inflammation. Dietary interventions improve these conditions but are less effective for inflammation in individuals with low microbial gene richness, suggesting its predictive value.
Area of Science:
- Microbiology
- Metagenomics
- Obesity Research
Background:
- Gene-environment interactions are crucial in obesity development.
- Gut microbiota composition influences energy harvest and metabolic health.
- Metagenomic approaches have advanced the study of gut microbial populations and enterotypes.
Purpose of the Study:
- To investigate temporal relationships between diet, gut microbiota, and metabolic/inflammatory phenotypes.
- To assess the impact of dietary interventions on individuals with varying gut microbial gene richness.
- To explore the predictive potential of microbial gene richness for intervention efficacy.
Main Methods:
- Conducted diet-induced weight-loss and weight-stabilization interventions.
- Studied a sample of 38 obese and 11 overweight individuals.
- Utilized metagenomic approaches to analyze gut microbiota composition and gene richness.
Main Results:
- Individuals with 40% reduced microbial gene richness exhibited more pronounced dys-metabolism and low-grade inflammation.
- Dietary intervention improved low gene richness and clinical phenotypes.
- Intervention efficacy for inflammation variables was reduced in individuals with lower gene richness.
Conclusions:
- Low microbial gene richness is associated with adverse metabolic and inflammatory states.
- Dietary interventions can improve gut microbiota and clinical outcomes, but with variable success for inflammation.
- Reduced microbial gene richness may predict the effectiveness of interventions for obesity and related conditions.
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