Functional Magnetic Resonance Imaging Clinical Trial
Official title:
A Pilot Clinical Trial to Study Arterial Spin Labeling and USPIO-enhanced MRI Methodologies for Measuring Hemodynamic Responses to Non-Drug Stimuli in Healthy Subjects
Verified date | June 2016 |
Source | Merck Sharp & Dohme Corp. |
Contact | n/a |
Is FDA regulated | No |
Health authority | Singapore: Health Sciences Authority |
Study type | Interventional |
This study will identify a dose of ferumoxytol that can reliably detect changes in blood flow/volume in response to non-drug stimuli. The study will determine whether signal detection for functional magnetic resonance imaging (fMRI) using ferumoxytol is better than that for blood oxygen level-dependent (BOLD) fMRI in response to sensory stimulation. The following procedures will be conducted in each of two study periods: arterial spin labeling (ASL) imaging study with increasing exposure to carbon dioxide (CO2); BOLD fMRI study with sensory stimulation; MRI studies with sensory stimulation in the presence of increasing doses of ferumoxytol; MRI study with increasing exposure to CO2 in the presence of ferumoxytol. There will be a 3-week interval between the two study periods. The study will enroll 8 subjects, but an additional 4 subjects are permitted to enroll to preserve study power.
Status | Completed |
Enrollment | 10 |
Est. completion date | April 2011 |
Est. primary completion date | February 2011 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Male |
Age group | 21 Years to 45 Years |
Eligibility |
Inclusion Criteria: - Participant weighs approximately 55-75 kg and has a Body Mass Index (BMI) of 18-25 kg/m^2 - Participant is in good health - Participant is a nonsmoker and/or has not used nicotine or nicotine-containing products for at least 6 months Exclusion Criteria: - Participant has a contraindication to MRI including cardiac pacemaker, brain aneurysm clip, implanted neurostimulator, insulin pump, cochlear implant, metal slivers in the eyes, or any other MRI-incompatible metal implants that cannot be safely removed - Participant has a condition that would limit his ability to complete MRI procedures, such as claustrophobia or chronic back pain - Participant plans to undergo MRI studies in the 3 months following the post-study visit - Participant has a history of hemochromatosis or other conditions of iron overload or disease of iron metabolism - Participant has a known sensitivity to ferumoxytol or iron-containing products or has a history of severe allergies, anaphylactic reaction, or intolerance to drugs and/or foods - Participant has a history of stroke, chronic seizures, or major neurological disorder - Participant is unable to refrain from the use of any medication, including prescription and non-prescription drugs or herbal remedies from approximately 2 weeks prior to the first dose of ferumoxytol until the post-study visit - Participant has a history of significant head injury/trauma with loss of consciousness lasting for 15 minutes and one or more of the following: a) recurring seizures resulting from head injury; b) persistent neurological or cognitive sequelae of the injury; c) cognitive rehabilitation following the injury |
Allocation: Non-Randomized, Endpoint Classification: Pharmacodynamics Study, Intervention Model: Single Group Assignment, Masking: Open Label
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
Merck Sharp & Dohme Corp. |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Magnitude of the MRI percent signal change in response to sensory stimulation without administration of ferumoxytol (BOLD fMRI) | 45 minutes after initiation of imaging procedures | No | |
Primary | Magnitude of the MRI percent signal change in response to sensory stimulation following administration of the first dose of ferumoxytol (250 mg) | 55 minutes after initiation of imaging procedures | No | |
Primary | Magnitude of the MRI percent signal change in response to sensory stimulation following administration of the second dose of ferumoxytol (100 mg, total cumulative dose of 350 mg) | 70 minutes after initiation of imaging procedures | No | |
Primary | Magnitude of the MRI percent signal change in response to sensory stimulation following administration of the third dose of ferumoxytol (180 mg, total cumulative dose of 510 mg) | 85 minutes after initiation of imaging procedures | No |
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