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Updated: Dec 14, 2025

Guided Protocol for Fecal Microbial Characterization by 16S rRNA-Amplicon Sequencing
Published on: March 19, 2018
Evolution of intestinal microbiome in a process of faecal microbiota transfer (FMT) in a patient with Clostridioides
María Paz Ventero1, Noelia Espinosa1, Rodrigo Jover2
1Servicio de Microbiología. Hospital General Universitario de Alicante. Instituto de Investigación Sanitaria y Biomédica de Alicante-ISABIAL, Alicante, España.
Introduction:
Clostridioides difficile infection (CDI) has become a global healthcare challenge due to increases in its incidence and mortality rates. Faecal microbiota transfer (FMT) is postulated as a protocol to prevent CDI recurrence.
Material And Methods:
A donor faecal sample and patient faecal samples (pre-FMT and post-FMT) were analysed. The r16S gene was amplified and sequenced by NGS, and its diversity and taxonomy composition were examined.
Results:
Microbial richness increased in post-FMT samples, and the β diversity studies grouped the samples into two clusters. One included the non-pathological samples (donor and pre-FMT samples), and the other included the pathological sample. The results obtained by Qiime2 and Bioconductor were similar.
Conclusion:
The analysis showed an increase in taxonomic diversity after the FMT, which suggests its usefulness. Moreover, these results showed that standardisation of bioinformatics analysis is key.
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