Role of Microbiome in the Outcomes Following Surgical Repair of Perianal Fistula: Prospective Cohort Study Design and Preliminary Results

Background Anal fistulae are common, predominantly cryptoglandular, and almost invariably require surgical treatment. Recurrences are common for procedures other than fistulotomy regardless of technique and adequacy of repair. Growing evidence supports the pivotal role of specific intestinal bacteria in anastomotic failures after bowel resection. Anal crypts harbor colonic microbiota suggesting that similar mechanisms to anastomotic healing might prevail after anal fistula repair and hence influence healing. This study aims at assessing the potential role of the intestinal microbiome in the clinical outcomes after surgical repair of cryptoglandular anal fistula. Methods This is a pilot prospective cohort study enrolling patients with anal fistula undergoing endoanal advancement flap. For microbiome analysis, stool samples are taken via rectal swab before the procedure; additionally, a portion of the fistula is collected intraoperatively after fistulectomy. Samples from groups with treatment failure are compared to samples from patients who healed after surgical repair. Alpha and beta diversities and differential abundance of microbial taxa are determined and compared between groups with DADA2 analytical pipeline. Results Five patients have been enrolled to date (one female, four male). At median follow-up of 6 months (2–11), one patient experienced disease recurrence at 3 months. DNA from the 5 rectal swab and tissue samples was extracted, showing increased relative abundance of Enterococcus faecalis in samples from the patient who developed a recurrent fistula but not in those without recurrence. Conclusion These very preliminary data suggest that intestinal microbiome may represent a crucial determinant of the surgical outcomes after anal fistula surgery..

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:47

Enthalten in:

World Journal of Surgery - 47(2023), 12 vom: 11. Okt., Seite 3373-3379

Sprache:

Englisch

Beteiligte Personen:

Bertucci Zoccali, Marco [VerfasserIn]
Moallem, Dalia H. [VerfasserIn]
Park, Heekuk [VerfasserIn]
Uhlemann, Anne-Catrin [VerfasserIn]
Church, James M. [VerfasserIn]
Kiran, Ravi P. [VerfasserIn]

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Anmerkungen:

© The Author(s) under exclusive licence to Société Internationale de Chirurgie 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

doi:

10.1007/s00268-023-07212-0

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

SPR053962214