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Published in: Updates in Surgery 4/2020

01-12-2020 | Respiratory Microbiota | Original Article

Role of preoperative gut microbiota on colorectal anastomotic leakage: preliminary results

Authors: Silvia Palmisano, Giuseppina Campisciano, Cristiana Iacuzzo, Laura Bonadio, Annalisa Zucca, Davide Cosola, Manola Comar, Nicolò de Manzini

Published in: Updates in Surgery | Issue 4/2020

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Abstract

Background

The dysbiosis is defined as a disturbed symbiotic relationship between microbiota and the host and can cause a pro-inflammatory imbalance impairing the healing process at anastomotic level. The aim of this study is to detect, in fecal samples collected in the preoperative time, a peculiar microbiota composition that could predict the onset of colorectal anastomotic leakage.

Materials and methods

We compared gut microbiota of healthy patients (Group A) and patients with colorectal cancer eligible for surgery (Group B). Group B was divided into patients who developed anastomotic leak (Group BL) and patients who had uneventful recovery (Group BNL). Stool samples were collected before surgery and after neoadjuvant treatment.

Results

We analyzed stool samples from 48 patients, 27 belonging to Group A and 21 to Group B. In Group B, five patients developed anastomotic leakage (Group BL). Compared to healthy subjects, Group B showed a moderate increase of Bacteroidetes and Proteobacteria, a moderate reduction of Firmicutes and Actinobacteria, and a statistically significant reduction of Faecalibacterium prausnitzii. Group BL patients showed an array of bacterial species which promoted dysbiosis, such as Acinetobacter lwoffii and Hafnia alvei. Group BNL patients showed that bacterial species like Faecalibacterium prausnitzii and Barnesiella intestinihominis have a protective function.

Conclusions

The bacterial flora in subjects with colorectal cancer is statistically different compared to healthy patients. The presence of preoperative aggressive bacteria and the lack of protective strains has strengthened the hypothesis that a peculiar microbiota composition could represent a risk factor for the occurrence of anastomotic leakage.
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Metadata
Title
Role of preoperative gut microbiota on colorectal anastomotic leakage: preliminary results
Authors
Silvia Palmisano
Giuseppina Campisciano
Cristiana Iacuzzo
Laura Bonadio
Annalisa Zucca
Davide Cosola
Manola Comar
Nicolò de Manzini
Publication date
01-12-2020
Publisher
Springer International Publishing
Published in
Updates in Surgery / Issue 4/2020
Print ISSN: 2038-131X
Electronic ISSN: 2038-3312
DOI
https://doi.org/10.1007/s13304-020-00720-x

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