Study on Cannabinoid Receptor Expression in Gastrointestinal Diseases

July 27, 2018 updated by: Medical University of Graz

Expression of G Protein-coupled Receptors and Ligands in Inflammatory Bowel Diseases and Colon Cancer

The purpose of the study is to investigate phospholipid ligands and their receptors in inflammatory bowel diseases and colon cancer. Several new species of lipids have been recently discovered which are able to transmit information to cancer cells in the large intestine. The lipids and their responsive receptors build an axis that is thought to influence the development of inflammation and cancer.

Study Overview

Status

Completed

Conditions

Detailed Description

Expression of cannabinoid receptors are examined in mucosal biopsies of the colon and blood leukocytes of patients with inflammatory bowel disease (IBD) or colon cancer in comparison to healthy individuals by polymerase chain reaction, Western Blots and flow cytometry. Colonic endoscopic biopsies and blood are collected from adult patients with confirmed active Ulcerative colitis (UC) and Crohn's disease (CD), adult UC and CD patients in remission, colon cancer patients and from healthy individuals (controls). Biopsies from healthy individuals (control group) will have undergone colonoscopy during standard screening for colorectal cancer or for the diagnostic workup of gastrointestinal symptoms without endoscopic or histologic evidence of colonic disease. For UC patients, duration and location of disease (Montreal classification), endoscopic (Mayo score) and clinical activity score, histological features and current and previous treatments (5-aminosalicylic acid, corticosteroids, immunomodulators) will be recorded. For CD patients, duration and location of disease is assessed, a HarveyBradshaw Index and activity will be scored, histological features and current and previous treatments will be recorded. Blood is collected and immediately processed for flow cytometric experiments. Phospholipids are measured in serum and in colonic mucosal biopsy samples of all cohorts by mass spectrometry.

Study Type

Observational

Enrollment (Actual)

31

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Austria
      • Graz, Austria
        • Medical University of Graz

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Subjects undergoing colon cancer screening program at the IBD outpatients clinic of the Medical University of Graz

Description

Inclusion Criteria:

  • Diagnosis of Ulcerative colitis (active/remission)
  • or Crohn's disease (active/remission)
  • or Colon cancer (or metastasis)

Exclusion Criteria:

  • unable to give informed consent
  • pregnancy
  • intermittent illness or comorbidity during Crohn/Ulcerative colitis

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
control group
healthy individuals
UC group
Patients with ulcerative colitis (active or remission)
CD group
Patients with Crohn's disease (active or remission)
Colon cancer group
Patients with colon cancer or metastasis

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Analysis of cannabinoid receptors in blood leukocytes and biopsies from patients with IBD and colon cancer
Time Frame: within 24 months
Protein content of cannabinoid receptors and G protein-coupled receptor 55 are measured by flow cytometry in blood leukocytes of patients with ulcerative colitis or Crohn's disease, and of healthy individuals. Transcripts of cannabinoid receptors and G protein-coupled receptor 55 are also measured in colonic mucosal biopsies of IBD/colon cancer patients and healthy individuals by polymerase chain reaction.
within 24 months

Secondary Outcome Measures

Outcome Measure
Time Frame
Assessment of endoscopic activity scores (Mayo, Harvey Bradshaw index) in IBD patients.
Time Frame: within 24 months
within 24 months
Assessment of malignancy of colon cancer by tumor staging
Time Frame: within 24 months
within 24 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Medical University of Graz

Investigators

  • Principal Investigator: Rudolf Schicho, PhD, Medical University of Graz

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 13, 2017

Primary Completion (Actual)

July 27, 2018

Study Completion (Actual)

July 27, 2018

Study Registration Dates

First Submitted

February 1, 2016

First Submitted That Met QC Criteria

April 6, 2016

First Posted (Estimate)

April 13, 2016

Study Record Updates

Last Update Posted (Actual)

July 30, 2018

Last Update Submitted That Met QC Criteria

July 27, 2018

Last Verified

July 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • KLI 521-B31

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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