Cerebral Cortex Dysfunction Clinical Trial
Official title:
Cortical Function in Primary Lateral Sclerosis and Amyotrophic Lateral Sclerosis
| Verified date | August 3, 2015 |
| Source | National Institutes of Health Clinical Center (CC) |
| Contact | n/a |
| Is FDA regulated | No |
| Health authority | |
| Study type | Observational |
This study will test whether primary lateral sclerosis (PLS) and amyotrophic lateral
sclerosis (ALS) affect parts of the brain responsible for thinking, planning, memory and
emotion.
Healthy volunteers 18 years of age and older and patients with PLS and ALS may be eligible
for this study.
Participants undergo the following procedures:
- Rating motor function: Subjects are asked to contract certain muscles in the face, arms
and legs, to tap their finger on a keyboard rapidly, to walk 20 feet, and to read a
paragraph out loud.
- Electroencephalography (EEG): The electrical activity of the brain (brain waves) is
recorded while subjects tap their finger very slowly. For this test, electrodes are
placed on the scalp using a cap or an adhesive substance. A conductive gel is used to
fill the space between the electrodes and the scalp to ensure good contact.
- Surface electromyography (EMG): The electrical activity of the muscles is measured.
Electrodes filled with a conductive gel are taped to the skin over the muscle tested.
- Neuropsychological testing: Testing may include questionnaires, pen-and-paper or
computerized tests, and motor tasks.
- Magnetic resonance imaging (MRI): MRI uses a strong magnetic field and radio waves to
produce images of the brain. The subject lies on a table that slides into the scanner.
Scanning time varies from 20 minutes to 3 hours, with most scans lasting 45-90 minutes.
| Status | Completed |
| Enrollment | 77 |
| Est. completion date | August 3, 2015 |
| Est. primary completion date | |
| Accepts healthy volunteers | No |
| Gender | All |
| Age group | 18 Years and older |
| Eligibility |
- PRIMARY LATERAL SCLEROSIS INCLUSION CRITERIA: Patients with PLS, aged 18 and older, must meet the diagnostic criteria proposed by Pringle (1992), incorporating Santa Clara (2004) consensus for pure PLS. Clinical: - Insidious onset in adulthood, progressive course - No family history - Disease duration greater than 3 years without lower motor neuron clinical signs - Clinical signs restricted to corticospinal/corticobulbar tract dysfunction Imaging: - Brain MRI normal (except cortical atrophy) - Normal cervical spine - Negative chest X-ray, negative mammograms in women EMG after 3 years, but within last 3 years, showing no active denervation. Normal serological studies for serum chemistry, Vitamin B12, Vitamin E levels, very long-chain fatty acids. Negative serology for syphilis, Lyme disease, HTLV 1 and 2. AMYOTROPHIC LATERAL SCLEROSIS INCLUSION CRITERIA: Patients with ALS, aged 18 and older, must fulfill the revised El Escorial criteria for probable or definite ALS. - Probable ALS: Upper and Lower motor neuron signs are present in more than two regions, but some UMN signs must be rostral to LMN signs. - Definite ALS: Upper and Lower motor neuron signs are present in more than three regions. HEALTHY VOLUNTEERS INCLUSION CRITERIA: Healthy adults, aged 18 and older, willing to participate, and able to give informed consent. EXCLUSION CRITERIA: Cognitive impairment of such severity that patients cannot provide assent to participate in the protocol. During the screening examination, we will question the patients to see if they understand that they are being evaluated, the types of tests we are using, and the response required. If they are unable to answer these questions, they will be excluded from the study. History or evidence of co-existence of a second neurological disorder, such as stroke, epilepsy, Parkinson's disease, polio, ataxia or neuropathy. History of traumatic brain injury, skull defects or neurosurgery. Patients who fulfill the inclusion criteria for ALS and PLS but have the following conditions will be allowed to participate in cognitive studies and EEG studies, but will be excluded from MRI testing. - Pacemakers or other implanted electrical devices, brain stimulators, dental implants, aneurysm clips (metal clips on the wall of a large artery), metallic prostheses (including metal pins and rods, heart valves, and cochlear implants), permanent eyeliner, implanted delivery pumps, or shrapnel fragments. - Occupational exposure to metal fragments, as in welders and metal workers, which may lead to small fragments in the eye. - Pregnancy. Women of childbearing potential will undergo urine pregnancy testing before MRI scanning. - Fear of confined spaces. |
| Country | Name | City | State |
|---|---|---|---|
| United States | National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland |
| Lead Sponsor | Collaborator |
|---|---|
| National Institute of Neurological Disorders and Stroke (NINDS) |
United States,
Brooks BR, Miller RG, Swash M, Munsat TL; World Federation of Neurology Research Group on Motor Neuron Diseases. El Escorial revisited: revised criteria for the diagnosis of amyotrophic lateral sclerosis. Amyotroph Lateral Scler Other Motor Neuron Disord. 2000 Dec;1(5):293-9. Review. — View Citation
Pringle CE, Hudson AJ, Munoz DG, Kiernan JA, Brown WF, Ebers GC. Primary lateral sclerosis. Clinical features, neuropathology and diagnostic criteria. Brain. 1992 Apr;115 ( Pt 2):495-520. — View Citation
Younger DS, Chou S, Hays AP, Lange DJ, Emerson R, Brin M, Thompson H Jr, Rowland LP. Primary lateral sclerosis. A clinical diagnosis reemerges. Arch Neurol. 1988 Dec;45(12):1304-7. — View Citation