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Related Concept Videos

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Updated: Jul 24, 2025

Microbiota Analysis Using Two-step PCR and Next-generation 16S rRNA Gene Sequencing
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Processing and Storage Methods Affect Oral and Gut Microbiome Composition.

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    Summary
    This summary is machine-generated.

    Microbiome sample processing impacts microbial diversity. Lyophilized fecal, fresh saliva, and dental supernatant samples show highest diversity, offering crucial insights for consistent microbiome research.

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    Area of Science:

    • Microbiology
    • Genomics
    • Bioinformatics

    Background:

    • Microbiome studies rely on 16S rRNA gene sequencing for microbial composition analysis.
    • Inconsistent sample storage and processing methods can introduce variability and affect study outcomes.
    • Standardization of pre-analytical methods is crucial for reliable and comparable microbiome data.

    Approach:

    • Compared various storage and processing methods for fecal, saliva, and dental swab samples.
    • Assessed microbial community diversity using 16S rRNA gene sequencing across different treatments.
    • Analyzed domain, phylum, and amplicon sequence variant (ASV) level differences between methods.

    Key Points:

    • Lyophilized fecal, fresh whole saliva, and dental sample supernatant fractions exhibited the highest alpha diversity.
    • Lyophilized fecal samples showed increased Archaea prevalence and a higher Firmicutes/Bacteroidetes ratio.
    • Significant differences in microbial composition were observed between optimal and other treatment methods.

    Conclusions:

    • Sample processing significantly influences microbiome diversity and composition.
    • Lyophilization for fecal samples and specific fractions for oral samples are recommended for preserving diversity.
    • Standardizing pre-analytical workflows is essential to mitigate confounding factors and improve cross-study comparability in microbiome research.