Dopamine Receptor Imaging to Predict Response to Stimulant Therapy in Chronic TBI
Last updated on April 2022Recruitment
- Recruitment Status
- Terminated
- Estimated Enrollment
- 30
Inclusion Criteria
- Post-traumatic amnesia > 24 hours
- Difficulty in attention or memory.
- Ability to read, write, and speak English
- ...
- Post-traumatic amnesia > 24 hours
- Difficulty in attention or memory.
- Ability to read, write, and speak English
- Symptoms in criteria (a) and (b) must have their onset after trauma, or there was a significant worsening of pre-existing symptoms after trauma.
- GCS 3 - 12 (GCS obtained in Emergency Room and noted in medical record)
- Ability to give informed consent.
- Age 18 - 55 years, inclusive
- Changes in personality
- Disturbance from these symptoms causes significant impairment of social or occupational functioning and represents a significant decline from previous level of functioning.
- Disordered sleep
- Fatigability
- TBI-related abnormality on neuroimaging (either CT or MRI).
- Apathy or lack of spontaneity
Exclusion Criteria
- Breastfeeding
- Known preexisting hypertension, heart failure, myocardial infarction, or ventricular arrhythmia.
- Concomitant treatment with blood pressure medication (both for high and low blood pressure).
- ...
- Breastfeeding
- Known preexisting hypertension, heart failure, myocardial infarction, or ventricular arrhythmia.
- Concomitant treatment with blood pressure medication (both for high and low blood pressure).
- Pre-existing disabling developmental disorder
- Concomitant treatment with coumadin anticoagulants, anticonvulsants (e.g., phenobarbital, phenytoin, primidone), and tricyclic drugs (e.g., imipramine, clomipramine, desipramine).
- Known severe anxiety or restlessness which prevents from doing day to day activities.
- Evidence of penetrating brain injury.
- Pre-existing schizophrenia
- Known peripheral vasculopathy, including Raynaud's phenomenon.
- History of drug dependence or alcoholism.
- Motor tics or a family history of Tourette's syndrome (diagnosed by presence of both multiple motor and one or more vocal tics over the period of a year, with no more than three consecutive tic-free months)
- Pregnancy
- Present history of alcohol and substance abuse disorder determined by DSM-IV
- Contraindication to TMS, such as metal in the cranial cavity or implanted electronic hardware.
- Non-removable body piercing
- Body mass index (BMI) > 30
- Claustrophobia
- Pre-existing major depressive disorder, aggressive behavior, hostility
- Known preexisting psychosis, bipolar illness.
- Multiple sclerosis, pre- or co-existing
- Inability to lie supine for two hours
- Implanted cardiac pacemaker or auto-defibrillator or pump
- Known hypersensitivity to methylphenidate (hives, difficulty breathing, and swelling of face, lips, tongue, or throat).
- Ferromagnetic metal in the cranial cavity or eye, e.g., aneurysm clip, implanted neural stimulator, cochlear implant, or ocular foreign body
- Concomitant therapy with monoamine oxidase inhibitors (such as Marplan (isocarboxazid), Nardil (phenelzine), Emsam (selegiline), and Parnate (tranylcypromine))
- Stroke (other than stroke at the time of TBI)
- Non-adherence to use of effective method of contraception for females of able to become pregnant for time from enrollment to the study until 2 weeks after completion of the study drug.
- Known glaucoma (consistently raised intraocular pressure with or without associated optic nerve damage)
- Current participation in other interventional clinical trial
- History of seizures, or interictal epileptiform discharges (IEDs) on EEG in absence of seizures.
- Pre-existing epilepsy
Summary
- Conditions
- Traumatic Brain Injury
- Type
- Interventional
- Phase
- Phase 2
- Design
- Allocation: N/A
- Intervention Model: Single Group Assignment
- Masking: None (Open Label)
- Primary Purpose: Treatment
Participation Requirements
- Age
- Between 18 years and 55 years
- Gender
- Both males and females
Description
Males and females (n=30), between the ages of 18 and 55 years in the chronic stage after TBI who experience deficits in neuropsychological function from TBIs incurred 6 months after the injury, will be recruited from military treatment facilities or civilian clinics when presenting for clinical mana...
Males and females (n=30), between the ages of 18 and 55 years in the chronic stage after TBI who experience deficits in neuropsychological function from TBIs incurred 6 months after the injury, will be recruited from military treatment facilities or civilian clinics when presenting for clinical management of TBI or post-concussive symptoms. 1. Study participants will be evaluated using brain MRI, psychometric measures adapted from the TBI Common Data Elements, attention tests and information about details of the injury and experience of post-concussive symptoms will be recorded. Transcranial magnetic stimulation (TMS) with placebo and with methylphenidate (60 mg by mouth) challenge will be performed to predict a stimulant response. 2. Subjects will be studied with [11C]-raclopride PET in two imaging sessions. One session will be after administration of placebo and the other after methylphenidate, 60 mg by mouth. Both placebo and methylphenidate will be given 60 minutes prior to injection of [11C]-raclopride to allow for peak uptake of methylphenidate in the brain. The binding potential of [11C]-raclopride relative to a non-displaceable reference region (cerebellum), BPND, will be used as a measure of D2/D3 receptor availability. The difference in BPND between methylphenidate and placebo (ΔBPND) is used to measure of tonic DA release. 3. Subjects will then be treated with oral methylphenidate, using a forced titration up to a dose of 30 mg given twice daily for 4 weeks. At that point, the neuropsychologic tests are repeated. Outcome measures: The primary outcome is change in information processing speed during neuropsychologic testing.
Inclusion Criteria
- Post-traumatic amnesia > 24 hours
- Difficulty in attention or memory.
- Ability to read, write, and speak English
- ...
- Post-traumatic amnesia > 24 hours
- Difficulty in attention or memory.
- Ability to read, write, and speak English
- Symptoms in criteria (a) and (b) must have their onset after trauma, or there was a significant worsening of pre-existing symptoms after trauma.
- GCS 3 - 12 (GCS obtained in Emergency Room and noted in medical record)
- Ability to give informed consent.
- Age 18 - 55 years, inclusive
- Changes in personality
- Disturbance from these symptoms causes significant impairment of social or occupational functioning and represents a significant decline from previous level of functioning.
- Disordered sleep
- Fatigability
- TBI-related abnormality on neuroimaging (either CT or MRI).
- Apathy or lack of spontaneity
Exclusion Criteria
- Breastfeeding
- Known preexisting hypertension, heart failure, myocardial infarction, or ventricular arrhythmia.
- Concomitant treatment with blood pressure medication (both for high and low blood pressure).
- ...
- Breastfeeding
- Known preexisting hypertension, heart failure, myocardial infarction, or ventricular arrhythmia.
- Concomitant treatment with blood pressure medication (both for high and low blood pressure).
- Pre-existing disabling developmental disorder
- Concomitant treatment with coumadin anticoagulants, anticonvulsants (e.g., phenobarbital, phenytoin, primidone), and tricyclic drugs (e.g., imipramine, clomipramine, desipramine).
- Known severe anxiety or restlessness which prevents from doing day to day activities.
- Evidence of penetrating brain injury.
- Pre-existing schizophrenia
- Known peripheral vasculopathy, including Raynaud's phenomenon.
- History of drug dependence or alcoholism.
- Motor tics or a family history of Tourette's syndrome (diagnosed by presence of both multiple motor and one or more vocal tics over the period of a year, with no more than three consecutive tic-free months)
- Pregnancy
- Present history of alcohol and substance abuse disorder determined by DSM-IV
- Contraindication to TMS, such as metal in the cranial cavity or implanted electronic hardware.
- Non-removable body piercing
- Body mass index (BMI) > 30
- Claustrophobia
- Pre-existing major depressive disorder, aggressive behavior, hostility
- Known preexisting psychosis, bipolar illness.
- Multiple sclerosis, pre- or co-existing
- Inability to lie supine for two hours
- Implanted cardiac pacemaker or auto-defibrillator or pump
- Known hypersensitivity to methylphenidate (hives, difficulty breathing, and swelling of face, lips, tongue, or throat).
- Ferromagnetic metal in the cranial cavity or eye, e.g., aneurysm clip, implanted neural stimulator, cochlear implant, or ocular foreign body
- Concomitant therapy with monoamine oxidase inhibitors (such as Marplan (isocarboxazid), Nardil (phenelzine), Emsam (selegiline), and Parnate (tranylcypromine))
- Stroke (other than stroke at the time of TBI)
- Non-adherence to use of effective method of contraception for females of able to become pregnant for time from enrollment to the study until 2 weeks after completion of the study drug.
- Known glaucoma (consistently raised intraocular pressure with or without associated optic nerve damage)
- Current participation in other interventional clinical trial
- History of seizures, or interictal epileptiform discharges (IEDs) on EEG in absence of seizures.
- Pre-existing epilepsy
Tracking Information
- NCT #
- NCT02148783
- Collaborators
- National Institutes of Health (NIH)
- Investigators
- Study Director: Ramon R Diaz-Arrastia, MD, PhD Uniformed Services University / NINDS Principal Investigator: Eric Wassermann, MD National Institute of Neurological Disorders and Stroke (NINDS)
- Study Director: Ramon R Diaz-Arrastia, MD, PhD Uniformed Services University / NINDS Eric Wassermann, MD National Institute of Neurological Disorders and Stroke (NINDS)
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