PET Imaging of Noradrenergic Transmission in the Brain
Background:
Researchers have developed a new radioactive tracer (11C-ARMI). A tracer is a drug that attaches itself to other chemicals in the body and lights up so that the chemicals can be seen in imaging scans. The new tracer may be able to help them with many diseases, such as Alzheimer s disease and Parkinson s disease. Researchers want to test the new tracer in healthy people.
Objective:
To test a new tracer (11C-ARMI) during imaging scans of the brain and body in healthy people.
Eligibility:
Healthy people aged 18 years and older. They must have been screened under protocols 01-M-0254 or 17M0181.
Design:
All participants will have a positron emission tomography (PET)/computed tomography (CT) scan. Before the scan, they will have blood and urine tests and a test of their heart function. The tracer will be given through a tube attached to a needle inserted into a vein in the arm. They will lie on a padded bed that fits inside a doughnut-shaped machine; the machine uses x-rays to create images of the inside of the body.
Some participants will have a PET/CT scan of their whole body. They will need only 1 visit.
Some participants will have a PET/CT scan of only their brain. They will have up to 2 visits. On the second visit, they will have a magnetic resonance imaging (MRI) scan of the brain. For the MRI, they will lie on a table that slides into a cylinder. The MRI uses magnetic fields to create images of the inside of the body.
Participants will receive a follow-up call to check on their well-being after their PET/CT scans.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
詳細な説明
Study Description:
This study is intended to provide information on the novel 11C-ARMI radioligand and its ability to localize and measure Alpha-1A Adrenoreceptor (alpha-1A AR) in the brain and body of healthy volunteers.
Objectives:
Primary Objective:
To study the brain uptake of 11C-ARMI and perform kinetic modeling of 11C-ARMI in healthy volunteers.
Secondary Objectives:
To study brain retest variability and reliability, biodistribution, and dosimetry of 11C-ARMI in healthy volunteers.
Endpoint:
Primary Endpoint:
For both objectives, the primary endpoint is receptor density measured as distribution volume (VT).
Secondary Endpoint:
Radiation burden to the body and expressed as Effective Dose (ED).
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- フェーズ 1
連絡先と場所
研究連絡先
研究連絡先
- 名前:Robert B Innis, M.D.
- 電話番号:(301) 594-1368
- メール:robert.innis@nih.gov
研究連絡先のバックアップ
- 名前:Tara N Turon, C.R.N.P.
- 電話番号:(301) 827-6599
- メール:tara.turon@nih.gov
研究場所
-
-
Maryland
-
Bethesda、Maryland、アメリカ、20892
- 募集
- National Institutes of Health Clinical Center
-
コンタクト:
- NIH Clinical Center Office of Patient Recruitment (OPR)
- 電話番号:TTY dial 711 800-411-1222
- メール:ccopr@nih.gov
-
-
参加基準
適格基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
説明
INCLUSION CRITERIA:
- Aged 18 years or older.
- Must have undergone a screening assessment under protocol 01-M-0254, The Evaluation of Patients with Mood and Anxiety Disorders and Healthy Participants or 17M0181 Recruitment and Characterization of Healthy Research Volunteers for NIMH Intramural Studies.
- Be healthy based on medical history, physical examination, and laboratory testing.
- Able to understand and willingness to provide informed consent.
- Willingness to complete all study procedures including MRI tests.
- Have had their radial artery pulse checked for the presence of adequate ulnar collateral flow and the absence of any metal or foreign objects in both wrists.
- Agree to adhere to the lifestyle considerations
EXCLUSION CRITERIA:
An individual who meets any of the following criteria will be excluded from participation in this study:
- Clinically significant abnormalities on EKG or laboratory testing. This includes CBC and acute care panel (Na, K, Cl, CO2, creatinine, glucose, urea nitrogen).
- Recent exposure to radiation (i.e., PET from other research) that, when combined with this study, would be above the allowable limits.
- Inability to lie flat on camera bed for at least two hours, including claustrophobia and weight greater than the maximum for the scanner (500 lbs).
- HIV infection.
- Pregnancy or breastfeeding.
- Must not have substance use disorder or alcohol use disorder.
- Unable to travel to the NIH.
- Unable to have an MRI scan (e.g., because of 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, shrapnel fragments, or metal fragments in the eye.
- Taking medications reported to have significant binding to alpha-1 adrenoceptors, medications that that alter norepinephrine release, or medications that lower blood pressure including antihypertensives, diuretics, or phosphodiesterase-5(PDE-5) inhibitors (e.g. sildenafil, tadalafil, vardenafil) within five elimination halflives prior to any [11C]ARMI PET scan.
- Known hypersensitivity to quinazoline-class medications (e.g., prazosin), defined as any prior allergic or clinically significant adverse reaction requiring discontinuation or medical evaluation.
- Blood donation within 8 weeks (2 months) before study participation, or unwillingness to avoid blood donation for 8 weeks (2 months) after the study.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:診断
- 割り当て:なし
- 介入モデル:単一グループの割り当て
- マスキング:なし(オープンラベル)
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
|
他の:片腕
すべての被験者は同じテストを受けます。
|
Injected IV followed by PET scanning
|
この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
To measure distribution volume
時間枠:24 months
|
Target quantification
|
24 months
|
二次結果の測定
二次結果の測定
結果測定 |
時間枠 |
|---|---|
|
To measure variability distribution volume
時間枠:24 months
|
24 months
|
協力者と研究者
捜査官
捜査官
- 主任研究者:Robert B Innis, M.D.、National Institute of Mental Health (NIMH)
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始 (実際)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
その他の研究ID番号
- 10002497
- 002497-M
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
IPD 共有時間枠
IPD 共有アクセス基準
IPD 共有サポート情報タイプ
- STUDY_PROTOCOL
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