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Spots Global Cancer Trial Database for Impact of Anti-Tumor Necrosis Factor (TNF) Antibodies on the T-lymphocyte and Macrophage Cooperation in Crohn Disease

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Trial Identification

Brief Title: Impact of Anti-Tumor Necrosis Factor (TNF) Antibodies on the T-lymphocyte and Macrophage Cooperation in Crohn Disease

Official Title: Impact of Anti-TNF Antibodies on the T-lymphocyte and Macrophage Cooperation in the Crohn Disease

Study ID: NCT00561548

Conditions

Crohn Disease

Study Description

Brief Summary: The aim of this research is to study Crohn disease patients before and after anti-TNF, the cooperation between lamina propria T-lymphocytes and macrophages, through the expression of co-signalisation molecules and their ligands, the production of cytokines participating in this cooperation, and the potential role of regulatory T lymphocytes.

Detailed Description: Crohn disease is an inflammatory disease and its frequency has been increasing over the last 25 years. The physiopathology involves a failure in the negative regulatory mechanisms of the inflammatory responses in the intestines, along with an excessive production of TNF-α by T-lymphocytes and macrophages of the lamina propria. Anti-TNF-α antibodies usually give good therapeutic results, in particular in patients who are resistent or dependant on steroids. Nevertheless, in Crohn disease, the destructive T-lymphocytes - macrophage interactions, their inhibition by anti-TNFα, and the impact of these antibodies on cellular signaling remain largely unknown. Two groups of 10 patients with active Crohn disease, with or without azathioprine, and requiring the start of anti-TNF treatment are included in this study. Rectosigmoïdal biopsies and blood tests will be done before starting the treatment and after 10 weeks of treatment. Surface antigens, cytokines and cellular molecules and the number of apoptotic cells will be analyzed by FACS, and the quantification of RNA will be analyzed by RT-PCR. This will therefore enable us to study, before and after anti-TNF-α, in patients treated or not with azathioprine, on intestinal and blood lymphocytes, the production of cytokines involved in the lymphocyte-macrophage interaction, and the potential role of regulatory T cells.

Keywords

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

Fédération des Maladies de l'appareil Digestif et de la Nutrition, Nice, , France

Contact Details

Name: Xavier Hébuterne, Professor

Affiliation: Centre Hospitalier Universitaire

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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