NCT01660555

The Real Distribution of Microbiota Along the Colon Using a Novel Device Along the Colon Using a Novel Device

The Real Distribution of Microbiota Along the Colonic Mucosa Using a Novel Device Capable of Taking 'Protected' Biopsies

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 10 (estimated)
• Sponsor: Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The human microbiota forms a highly complex ecosystem with its host, consisting of hundreds of different species of microorganisms, the majority of which have not yet been cultured. With the recent advent of small subunit rRNA (SSU rRNA) gene sequencing technology, it is estimated that the number of specific gastrointestinal tract phylotypes is more than 1800. Sampling techniques might constitute a major confounder in the read-out of highly sensitive techniques such as SSU-DNA analysis. It is not properly established whether there is a difference in distribution of luminal bacteria or mucosa adherent bacteria proximal or distal in the colon. In addition, 'bowel lavage' before endoscopy might result in a disturbance of the microbiota in the bowel. For this proof of concept study a novel device capable of taking 'protected' biopsies has been designed. We hypothesize that the distribution of mucosal and luminal microbiota changes from proximal to distal in the colon, and by taking 'protected biopsies' there will be the opportunity to show the real distribution of microbiota according to the localisation in the colon. Furthermore, we hypothesize that microbial diversity will differ after bowel lavage.

Detailed description

We hypothesize that the distribution of mucosal and luminal microbiota changes from proximal to distal in the colon, and by taking 'protected biopsies' there will be the opportunity to show the real distribution of microbiota according to the localisation in the colon.

Conditions

• Patients Scheduled for Colonoscopy

Timeline

• Start date: 2012-08-01
• Primary completion: 2014-03-01
• Completion: 2014-03-01
• First posted: 2012-08-08
• Last updated: 2014-09-03

Locations

2 sites across 1 country: Netherlands