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Temporal variability is a personalized feature of the human microbiome
Genome Biology
|December 18, 2014
Summary
Human microbiome composition is highly personalized and varies significantly over time. Individual microbial diversity influences the stability of gut and tongue microbial communities, impacting health status assessments.
Area of Science:
- Microbiology
- Human Microbiome Research
- Systems Biology
Background:
- Human microbial communities are diverse and vary between individuals.
- Temporal dynamics of these communities within individuals are poorly understood.
- Previous studies often assumed negligible temporal variation in healthy adults.
Purpose of the Study:
- To investigate the temporal variability of microbial communities in different human body habitats.
- To understand how individual differences influence microbiome stability over time.
- To explore the relationship between microbial diversity and temporal variability.
Main Methods:
- Longitudinal profiling of microbial communities from forehead, gut (fecal), palm, and tongue.
- Sampling of 85 adults weekly over a 3-month period.
- Analysis of changes in taxa number and relative abundances.
Main Results:
- Skin microbiomes (forehead, palm) showed more variation in the number of taxa.
- Gut and tongue microbiomes exhibited greater variation in relative abundances of taxa.
- Microbial diversity predicted stability: higher diversity correlated with more stable gut and tongue communities.
- Significant inter-individual differences in temporal variability were observed across all body habitats.
Conclusions:
- High temporal variability in microbiome diversity and structure exists across all studied body habitats.
- Temporal dynamics are crucial for linking microbiome structure to health status.
- Both microbiome composition and its degree of temporal variability are personalized features.
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