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Human Intestinal Microbiome and Surgical Outcomes in Patients Undergoing Colorectal Cancer Surgery

NCT04005118 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 50

Last updated 2019-07-02

No results posted yet for this study

Summary

Intro: Recent studies on colorectal cancer surgery have been focusing on the role of intestinal microbiome on surgical outcomes. Standard perioperative cares, like mechanic bowel preparation (MBP), administration of antibiotics (ABT) and surgery-related stress and injury influence the microbiome composition and possibly induce a shift toward a microbiome dysbiotic state, which predisposes to complicated postoperative course. Microbiome composition changes and enhanced virulence factors may increase the risk of postoperative complications, such as anastomotic leakage (AL), surgical site infection (SSI), and postoperative ileus (PI), which are known to impact on patient's overall survival and cancer recurrence.

Objective: The primary objective is to investigate if a significant association might exist between the microbiome composition and the occurrence of postoperative complications at 90 days.

Methods: 3 different microbiome samples will be taken from all patients. Two fresh fecal samples for detection of LM and fecal water preparation: a) a day before the surgery before MBP and/or ABT (LM1), b) postoperatively after first bowel movement (LM2). One sample will be taken intra-operatively from the stapled resection lines of circular stapler used for forming a colorectal anastomosis, to detect the MAM and to perform immunohistochemistry staining for detection of HACE1 expression.

DNA analysis will be performed for all samples. IHC will be performed for detecting HACE1 expression in the tumor and colorectal anastomosis tissues using anti-HACE1 antibodies. .

For proliferation assessment, human colon carcinoma cell lines HT29 will be plated in monolayers and scratched with a single scratch. Monolayers will be incubated for 24 hours with fecal water from patients with surgical complications and matched control patients without complications.

Descriptive statistics will be performed to describe the study population. This project aim to describe microbiome composition and its impact on postoperative complications.

Conditions

  • Adenocarcinoma of the Colon
  • Adenocarcinoma of the Rectum

Sponsors & Collaborators

  • Assistance Publique - Hôpitaux de Paris

    lead OTHER

Principal Investigators

  • Lelde Lauka, PHD · APHP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-05-28
Primary Completion
2020-04-01
Completion
2020-04-01

Countries

  • France

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04005118 on ClinicalTrials.gov