Parkinson DiseaseNCT00058721
Single Photon Emission Computed Tomography to Study Receptors in Parkinson's Disease
An observational study of Parkinson Disease, run by National Institute of Neurological Disorders and Stroke (NINDS) at 1 site in United States.
Trial summary
This study will use single photon emission computed tomography, or SPECT (see below), to examine brain nicotine receptors in evaluating the role of a chemical called acetylcholine in memory and other problems in Parkinson's disease (PD). Acetylcholine acts by binding to these nicotine receptors. Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Parkinson Disease
- What is being tested?
- I-123-5-IA85380
- How many people
- 60 participants
- Where
- 1 siteUnited States
- Study dates
- Apr 2003to Jan 2005
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- Age greater than or equal to 40.
- Diagnosis of PD.
- Consent.
- Responsible Caregiver (only for patients with dementia).
- Age greater than or equal to 40.
- Consent.
Who cannot join
- Secondary cause of Parkinsonism, e.g. Wilson's disease, neuroleptic use.
- Dementia not due to PD, abnormal screening labs for dementia
- Or severe dementia with MMSE less than 15.
- Neurological disorder other than PD that would effect protocol (e.g. stroke, Alzheimer's disease).
- Use of cholinergic or anticholinergic agents within 60 days.
- Abnormal MRI other than mild atrophy.
Show all 14Show fewer
- Claustrophobia.
- Pregnancy or breast feeding.
- Prior participation in other research protocols or clinical care in the last year such that radiation exposure would exceed the annual limits.
- Any conditions that increase risk for MRI (pacemaker, metallic foreign body, etc.).
- Any medical condition that in the opinion of the investigators would, interfere with the safe conduct of the study.
- Both healthy subjects and patients will be excluded if they have more than moderate hypertension. The subject may be on anti-hypertensive medications. The initial screening must show no more than moderate hypertension- i.e. less than 160/95. On baseline evaluation on the day of the scan (i.e., before injection of tracer), the subject must be asymptomatic (no headache, dizziness, neurological symptoms, or blurred vision) AND have sustained BP less than 180/100.
- History of smoking tobacco, use of nicotine gum or patch or other uses of nicotine within last 5 years.
- Inability to provide consent.
Trial locations and contacts
1 site in 1 country.
United States1 site
National Institute of Neurological Disorders and Stroke (NINDS)
Bethesda, Maryland, 20892
About this study
Official title: SPECT Evaluation of Nicotinic Cholinergic Receptors in Parkinson's Disease
This study will use single photon emission computed tomography, or SPECT (see below), to examine brain nicotine receptors in evaluating the role of a chemical called acetylcholine in memory and other problems in Parkinson's disease (PD). Acetylcholine acts by binding to these nicotine receptors.
Healthy normal volunteers and patients with Parkinson's disease 40 years of age and older, with or without dementia, may be eligible for this study. Candidates will be screened with physical and neurological examinations, a pen and paper test of memory and other mental functions, blood tests, and, for women of childbearing potential, a pregnancy test. Patients with cognition problems will have more intensive mental function tests.
Read more
All participants will undergo the following procedures:
- Magnetic resonance imaging (MRI): This test uses a strong magnetic field and radio waves to show structural and chemical changes in the brain. During the scan, the subject lies on a table in a narrow cylinder (the scanner). The time required in the scanner is about 1 hour, during which the subject is asked to lie very still for 10 to 15 minutes at a time. He or she can speak with a staff member via an intercom system at all times during the procedure.
- SPECT: This nuclear medicine test produces a picture of the receptors in the brain. On the night before the scan, the day of the scan, and for 4 days after the scan, subjects take an oral dose of potassium iodide to protect the thyroid gland from the radioactive tracer used in the SPECT procedure. (People allergic to potassium iodide will take potassium perchlorate instead.) Before the scan, small radioactive markers containing 99Tc are glued to the subject's head. Two catheters (thin, flexible tubes) are placed in veins in the arms to inject the radioactive tracer [123I]5-I-A-85380 and to draw blood samples. Another catheter is placed in an artery in the wrist to draw arterial blood samples. During the scan, the subject lies on a bed with his or her head held still with a head holder. The scans are taken over a 6-hour period after injection of [123I]5-I-A-85380. An electrocardiogram, respiration, and blood pressure measures are taken before the tracer is injected, then 5 minutes after the injection, and again 30 to 60 minutes after the injection. Blood and urine samples are collected 5 to 6 hours after starting the scan. Participants are asked to urinate at least every 2 hours for 12 hours after injection of [123I]5-I-A-85380 to decrease radiation exposure.
Read the detailed description
Parkinson's disease (PD) is the second most common neurodegenerative disorder. PD is characterized primarily by motor impairment, but cognitive impairment is common and dementia may occur in up to 50% of patients. Cholinergic deficits have been widely demonstrated in PD patients with and without dementia. Cholinergic deficits are more profound in the setting of PD with dementia. The cholinergic system mediates aspects of learning and memory and deficits in cholinergic function are correlated with the degree of dementia in PD. Additionally, the cholinergic system may mediate certain aspects of motor function in PD. Data on cholinergic function, particularly relating to nicotinic cholinergic receptors, are limited to post mortem studies, and little is known about the role of the cholinergic system in vivo and how it relates to clinical phenomena. The aim of the current study is to assess the feasibility and usefulness of imaging of the high affinity alpha 4 beta 2 nicotinic cholinergic receptor in vivo, using SPECT (single photon emission computed tomography) imaging in patients with PD. The long-term goal of the present study is to further understanding of the role of the cholinergic system in the pathogenesis of PD and to elucidate potential diagnostic and therapeutic targets.
- Conditions
- Parkinson Disease
- Being tested
- I-123-5-IA85380
- Keywords
- Dementia, Feasibility, Dopamine, Lewy Body, Parkinson Disease, PD, Healthy Volunteer, HV
- Medical subject headings
- Parkinson Disease, Dementia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
I-123-5-IA85380Drug
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Apr 2003 (estimated)
- Study startApr 2003
- Study completionJan 2005
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Parkinson DiseaseStudies of the same condition, open and under way.
- More trials run by National Institute of Neurological Disorders and Stroke (NINDS)The sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Enrolment
- 60 participants
Sponsor and investigators
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00058721
- Sponsor's protocol ID
- 030006
- Other IDs
- 03-N-0006
- Status last verified
- Jan 2005
- First submitted
- 11 Apr 2003
- Last updated
- 4 Mar 2008
- Results posted
- No
Publications
Fujita M, Tamagnan G, Zoghbi SS, Al-Tikriti MS, Baldwin RM, Seibyl JP, Innis RB. Measurement of alpha4beta2 nicotinic acetylcholine receptors with [123I]5-I-A-85380 SPECT. J Nucl Med. 2000 Sep;41(9):1552-60.
PubMed 10994738Abreo MA, Lin NH, Garvey DS, Gunn DE, Hettinger AM, Wasicak JT, Pavlik PA, Martin YC, Donnelly-roberts DL, Anderson DJ, Sullivan JP, Williams M, Arneric SP, Holladay MW. Novel 3-Pyridyl ethers with subnanomolar affinity for central neuronal nicotinic acetylcholine receptors. J Med Chem. 1996 Feb 16;39(4):817-25. doi: 10.1021/jm9506884.
PubMed 8632405Charpantier E, Barneoud P, Moser P, Besnard F, Sgard F. Nicotinic acetylcholine subunit mRNA expression in dopaminergic neurons of the rat substantia nigra and ventral tegmental area. Neuroreport. 1998 Sep 14;9(13):3097-101. doi: 10.1097/00001756-199809140-00033.
PubMed 9804323
Study at a glance
From the registry record, last updated by the sponsor on 4 Mar 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- SPECT Evaluation of Nicotinic Cholinergic Receptors in Parkinson's Disease
- ClinicalTrials.gov ID
- NCT00058721
- Acronym / sponsor ID
- 030006
- Conditions
- Parkinson Disease
- Keywords
- Dementia, Feasibility, Dopamine, Lewy Body, Parkinson Disease, PD, Healthy Volunteer, HV
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 60 participants
- Lead sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)US National Institutes of Health
- Study start
- Apr 2003
- Study completion
- Jan 2005
- First posted
- 11 Apr 2003 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will use single photon emission computed tomography, or SPECT (see below), to examine brain nicotine receptors in evaluating the role of a chemical called acetylcholine in memory and other problems in Parkinson's disease (PD). Acetylcholine acts by binding to these nicotine receptors.
Healthy normal volunteers and patients with Parkinson's disease 40 years of age and older, with or without dementia, may be eligible for this study. Candidates will be screened with physical and neurological examinations, a pen and paper test of memory and other mental functions, blood tests, and, for women of childbearing potential, a pregnancy test. Patients with cognition problems will have more intensive mental function tests.
All participants will undergo the following procedures:
- Magnetic resonance imaging (MRI): This test uses a strong magnetic field and radio waves to show structural and chemical changes in the brain. During the scan, the subject lies on a table in a narrow cylinder (the scanner). The time required in the scanner is about 1 hour, during which the subject is asked to lie very still for 10 to 15 minutes at a time. He or she can speak with a staff member via an intercom system at all times during the procedure.
- SPECT: This nuclear medicine test produces a picture of the receptors in the brain. On the night before the scan, the day of the scan, and for 4 days after the scan, subjects take an oral dose of potassium iodide to protect the thyroid gland from the radioactive tracer used in the SPECT procedure. (People allergic to potassium iodide will take potassium perchlorate instead.) Before the scan, small radioactive markers containing 99Tc are glued to the subject's head. Two catheters (thin, flexible tubes) are placed in veins in the arms to inject the radioactive tracer [123I]5-I-A-85380 and to draw blood samples. Another catheter is placed in an artery in the wrist to draw arterial blood samples. During the scan, the subject lies on a bed with his or her head held still with a head holder. The scans are taken over a 6-hour period after injection of [123I]5-I-A-85380. An electrocardiogram, respiration, and blood pressure measures are taken before the tracer is injected, then 5 minutes after the injection, and again 30 to 60 minutes after the injection. Blood and urine samples are collected 5 to 6 hours after starting the scan. Participants are asked to urinate at least every 2 hours for 12 hours after injection of [123I]5-I-A-85380 to decrease radiation exposure.
Detailed description
Parkinson's disease (PD) is the second most common neurodegenerative disorder. PD is characterized primarily by motor impairment, but cognitive impairment is common and dementia may occur in up to 50% of patients. Cholinergic deficits have been widely demonstrated in PD patients with and without dementia. Cholinergic deficits are more profound in the setting of PD with dementia. The cholinergic system mediates aspects of learning and memory and deficits in cholinergic function are correlated with the degree of dementia in PD. Additionally, the cholinergic system may mediate certain aspects of motor function in PD. Data on cholinergic function, particularly relating to nicotinic cholinergic receptors, are limited to post mortem studies, and little is known about the role of the cholinergic system in vivo and how it relates to clinical phenomena. The aim of the current study is to assess the feasibility and usefulness of imaging of the high affinity alpha 4 beta 2 nicotinic cholinergic receptor in vivo, using SPECT (single photon emission computed tomography) imaging in patients with PD. The long-term goal of the present study is to further understanding of the role of the cholinergic system in the pathogenesis of PD and to elucidate potential diagnostic and therapeutic targets.
Study design
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (6 listed)
- Age greater than or equal to 40.
- Diagnosis of PD.
- Consent.
- Responsible Caregiver (only for patients with dementia).
- Age greater than or equal to 40.
Key exclusion criteria (14 listed)
- Secondary cause of Parkinsonism, e.g. Wilson's disease, neuroleptic use.
- Dementia not due to PD, abnormal screening labs for dementia
- Or severe dementia with MMSE less than 15.
- Neurological disorder other than PD that would effect protocol (e.g. stroke, Alzheimer's disease).
- Use of cholinergic or anticholinergic agents within 60 days.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| I-123-5-IA85380 | Drug | – |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Mar 2008.
- Background: PubMed 10994738Fujita M, Tamagnan G, Zoghbi SS, Al-Tikriti MS, Baldwin RM, Seibyl JP, Innis RB. Measurement of alpha4beta2 nicotinic acetylcholine receptors with [123I]5-I-A-85380 SPECT. J Nucl Med. 2000 Sep;41(9):1552-60.
- Background: PubMed 8632405Abreo MA, Lin NH, Garvey DS, Gunn DE, Hettinger AM, Wasicak JT, Pavlik PA, Martin YC, Donnelly-roberts DL, Anderson DJ, Sullivan JP, Williams M, Arneric SP, Holladay MW. Novel 3-Pyridyl ethers with subnanomolar affinity for central neuronal nicotinic acetylcholine receptors. J Med Chem. 1996 Feb 16;39(4):817-25. doi: 10.1021/jm9506884.
- Background: PubMed 9804323Charpantier E, Barneoud P, Moser P, Besnard F, Sgard F. Nicotinic acetylcholine subunit mRNA expression in dopaminergic neurons of the rat substantia nigra and ventral tegmental area. Neuroreport. 1998 Sep 14;9(13):3097-101. doi: 10.1097/00001756-199809140-00033.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Parkinson Disease, run by National Institute of Neurological Disorders and Stroke (NINDS) at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 14 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Mar 2008. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00058721, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Mar 2008.