- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05084807
Evaluation of the Lymphocyte Subpopulations in the Normal Mucosa of the Upper Digestive Tract (GUTproject)
October 18, 2021 updated by: Hospital Mutua de Terrassa
The macro and microscopic findings of the upper gastrointestinal tract are useful in the differential diagnosis of digestive diseases such as Crohn's or celiac diseases.
However, the histopathological findings (duodenal lymphocytosis, atrophy, chronic inflammatory infiltrate, etc.) are generally not pathognomonic, and there is a great overlap between different inflammatory diseases.
The study of lymphocyte subpopulations of the intestine has shown its usefulness in cases of celiac disease that are difficult to diagnose.
In patients with celiac disease, lymphocytes that infiltrate the duodenum present a specific pattern with increased percentage of TCRgẟ+ lymphocytes and reduced percentage of CD3- lymphocytes.
However, it is currently unknown if other inflammatory diseases (e.g.
Crohn's disease) have specific lymphocyte subpopulations that could be of great diagnostic aid.
One of the main problems in establishing patterns associated with disease is the absence of immunological studies carried out in healthy individuals.
Most of the studies include, as a control group, patients who undergo gastroscopy for the study of upper digestive symptoms and have microscopically normal duodenal biopsy.
This is a heterogeneous population that includes, among others, patients with functional pathology in whom the existence of low-grade inflammatory phenomena has been suggested.
Therefore, patients with digestive symptoms are not good controls to establish normal patterns of intestinal immunity.
Study Overview
Status
Recruiting
Intervention / Treatment
Detailed Description
Hypothesis: The evaluation of the lymphocyte subpopulations of the subjects without digestive symptoms and normal upper digestive tract mucosa will allow to have a healthy control group with which to compare the cellular patterns of different chronic inflammatory diseases.
Study Type
Interventional
Enrollment (Anticipated)
20
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Albert Martin-Cardona, MD
- Phone Number: 60880 +34937365050
- Email: martincardona@gmail.com
Study Contact Backup
- Name: Maria Esteve, PhD, MD
- Phone Number: 11210 +34937365050
- Email: mestevecomas@gmail.com
Study Locations
-
-
Barcelona
-
Terrassa, Barcelona, Spain, 08221
- Recruiting
- Hospital Universitari Mútua Terrassa
-
Contact:
- Pilar Arcusa
- Phone Number: 11801 +34 937365050
- Email: parcusa@mutuaterrassa.es
-
Principal Investigator:
- Maria Esteve, PhD
-
Sub-Investigator:
- Albert Martin-Cardona
-
-
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
Description
Study population: 20 healthy individuals, strictly asymptomatic, of both sexes, in different age groups will be included.
Inclusion Criteria:
- Adult individuals without any comorbidity, strictly asymptomatic.
- Age> 18 years.
- Informed consent signature.
- Carrying out a varied, non-restrictive diet.
- Negative blood tests including celiac serology, H. pylori serology and celiac disease genetic study (will only be accepted if they have positive DQ2.2 allele).
- Normal esophagogastroduodenoscopy.
- Grossly and microscopic normal duodenal mucosa.
Exclusion Criteria:
- Refusal of the individual to participate.
- Severe disease (heart disease, lung disease, liver disease, bleeding disorders, neoplasms, etc.).
- Personal history of celiac disease and / or inflammatory bowel disease.
- Pregnancy and/or lactation.
- Age> 45 years.
- BMI> 28.
- Presence of any current digestive symptoms (negative responses must be met in all items of the dyspepsia test).
- Family history of 1st or 2nd degree of celiac disease or inflammatory bowel disease.
- Potentially contagious diseases (HIV, HCV, HBV, tuberculosis, Covid19, ...).
- Trips to tropical countries in the last 6 months.
- Presence of coagulopathy or use of anticoagulant treatments.
- Consumption of any drug (including NSAIDs) in the last 4 weeks.
- Strict vegetarian, vegan or gluten-free diet.
- H. pylori positive.
- DQ2.5 positive and /or DQ8 positive
- Positive celiac serology (anti-transglutaminase> 2 U / mL).
- Active smoking.
- Habitual alcohol intake >40 g in men and 20 g in women.
- Alcohol intake in the previous 3 days.
- Esophagus-gastro-duodenoscopy with macroscopically abnormal mucosa.
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
- Primary Purpose: BASIC_SCIENCE
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
OTHER: Healthy group
A group of healthy, strictly asymptomatic individuals of both sexes and different age groups.
|
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage of the lymphocyte subpopulations of the upper digestive tract as assessed by flow cytometry in asymptomatic healthy subjects with normal mucosa.
Time Frame: 4 hour
|
During gastroscopy, samples of normal mucosa will be taken for histological and lymphocyte subpopulations analysis.
The percentage of lymphocyte subpopulations will be assessed by flow cytometry.
|
4 hour
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Comparison the percentage of the pattern of lymphocyte subpopulations in the duodenum in relation to age and sex.
Time Frame: 4 hour
|
To compare whether there are differences between the lymphocyte subpopulations related to the age and sex of the healthy individuals, a student's t test, ANOVA or the corresponding non-parametric test will be used.
The values will be expressed according to: mean +/- 2DS or median and interquartile range.
|
4 hour
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
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 1, 2021
Primary Completion (ANTICIPATED)
June 1, 2022
Study Completion (ANTICIPATED)
December 31, 2022
Study Registration Dates
First Submitted
September 28, 2021
First Submitted That Met QC Criteria
October 18, 2021
First Posted (ACTUAL)
October 20, 2021
Study Record Updates
Last Update Posted (ACTUAL)
October 20, 2021
Last Update Submitted That Met QC Criteria
October 18, 2021
Last Verified
October 1, 2021
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- GUT2020
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
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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