PET Imaging of Cyclooxygenase-2 in Multiple Sclerosis

Status Completed

Clinical Trial Summary

Background: Multiple sclerosis (MS) is an autoimmune disease that has no cure. MRI is the main tool used in the study and treatment of people with MS. A tracer has been developed for cyclooxygenase-2 (COX-2), an enzyme found in the brain during inflammation. Researchers want to explore the role inflammation plays in MS and see if COX-2 is measurable in the brains of people with the disease. Objective: To see if COX-2 is detectable in the brains of individuals with MS. Eligibility: People ages 18 and older with MS who are otherwise healthy. Design: Participants will be screened with their medical history and a physical exam. They will have an EKG to check the electrical activity of the heart. Participants study involvement requires 2 to 3 visits and will last between 1 week and 4 months. Participants will have 2 PET scans of the brain. These might occur on the same day or on separate days. A small amount of a radioactive chemical will be injected through an intravenous catheter. A needle will be used to guide a thin plastic tube into an arm vein. The needle will be removed. Only the catheter will be left in the vein. The PET scanner is shaped like a doughnut. Participants will lie on a bed that slides in and out of the scanner. They will wear a plastic mask molded to fit the head. The scan will last about 90 minutes. Participants will receive the medication celecoxib orally about 2 hours before the second scan. Participants will have blood tests. Participants must avoid certain medications a month prior to the PET scans. ...

Clinical Trial Description

Study Description: This study will examine whether cyclooxygenase 1 (COX-1) and cyclooxygenase 2 (COX-2) are elevated in the brain of individuals with Multiple Sclerosis (MS) Objectives: To determine whether COX-1 and COX-2 are detectable in the brains of individuals with MS. Endpoints: Primary endpoint: Calculation of COX-1 and COX-2 densities from [11C]PS13 and [11C]MC1 PET scans, respectively, using baseline scans and scans after blockade with ketoprofen and celecoxib, respectively. Secondary endpoint: 1) Comparison of [11C]PS13 and [11C]MC1 specific uptake in different types of MS lesions (active, chronic active, inactive) and in normal white matter. 2) Comparison of [11C]PS13 and [11C]MC1 specific uptake in the brain lesions of the same subjects ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT05062083
Study type	Interventional
Source	National Institutes of Health Clinical Center (CC)
Contact
Status	Completed
Phase	Phase 2
Start date	June 7, 2022
Completion date	January 30, 2024

View Details

See also
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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.