Acute D2 Receptor Blockade Induced Neuronal Network Changes in Human Volunteers
調査の概要
状態
介入・治療
詳細な説明
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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New York
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Glen Oaks、New York、アメリカ、11004
- Zucker-Hillside Hospital
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Between 18 and 60 years of age
- Subject is competent to provide informed consent
Exclusion Criteria:
- Mini Mental Status Exam is less than 28
- Past or current history of any psychotic illness in the subject or in first degree family members
- Self report of illicit drug use (except marijuana) in the past. Use of marijuana during the last 3 month...
- Any use of antipsychotic in the past.
- Any neuro-anatomical lesions on previous brain imaging
- Any use of D2 receptor blocking agent (such as antiemetics) in the last two weeks.
- Any use of any psychotropic medications (SSRI, mood stabilizers, benzodiazepines, stimulants) in the last month.
- MRI contraindications
- Any cardiovascular or cerebrovascular diseases or conditions that predispose patients to hypotension (eg. dehydration, hypovolemia, antihypertensive medication)
- Subjects with diabetes mellitus, metabolic syndrome, hepatic or renal impairment, seizure disorder and any neurological disorder
- QTc interval longer than 450 ms for male and 470 ms for female
- Subjects who used any medications in the last two weeks (to avoid any possible drug-drug interactions)
- Pregnancy
- Individuals who are illiterate and/or visually impaired
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:基礎科学
- 割り当て:ランダム化
- 介入モデル:クロスオーバー割り当て
- マスキング:ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的:Risperidone then Placebo
This group will receive 2 mg (>200lbs), 1.5mg (150-200lbs.)
or 1 mg (< 150lbs. of risperidone oral solution on the first day and a placebo on the second day.
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We gave oral liquid of risperidone one time 1-2 mg depending on subject's weight.
We gave oral liquid without active risperidone (pt and provider were both double blinded)
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実験的:Placebo then Risperidone
This group will receive a placebo on the first day and 2mg (> 200lbs.),
1.5mg (150-200lbs), or 1 mg (<150lbs.) of risperidone oral solution on the second day
|
We gave oral liquid of risperidone one time 1-2 mg depending on subject's weight.
We gave oral liquid without active risperidone (pt and provider were both double blinded)
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この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Repeatable Battery for the Assessment of Neuropsychological Status
時間枠:The change of RBANS scores between placebo and treatment conditions on two consecutive days
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This will measure the subject's cognitive performance. RBANS is a well-characterized repeatable battery to measure a wide array of cognitive performance in different cognitive domains. We will use Total Score in RBANS: five index scores are computed from the RBANS (immediate memory, language, visuospatial, attention, delayed memory) that are combined to provide the Total Score. The Total Score is expressed as a standardized score normalized to a population mean of 100, with a standard deviation of 15 (possible scores 40-135). Higher scores reflect better performance. More detailed information is available: Randolph C, Tierney MC, Mohr E, Chase TN (June 1998). "The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS): preliminary clinical validity". J Clin Exp Neuropsychol. 20 (3): 310-9. doi:10.1076/jcen.20.3.310.823. PMID 9845158. Here we calculated the difference of T-scaled total RBANS score between risperidone day and placebo day in all participants |
The change of RBANS scores between placebo and treatment conditions on two consecutive days
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Simpson-Angus Extrapyramidal Side Effects Scale
時間枠:2 times on risperidone day and on placebo day
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The secondary outcome measures are the scores from side effect scales (Simpson-Angus Extrapyramidal Side Effects.
It will measured in synchrony with Repeated Battery for the Assessment of Neuropsychological Status to explore if any of these measures would correlate with network changes in the brain.
The Simpson-Angus scale is 0 if there is no extrapyramidal side effects, and is higher the worst the symptoms are.
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2 times on risperidone day and on placebo day
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その他の成果指標
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Feedback-based Probabilistic Classification Task
時間枠:Before every MRI except the 2nd and 4th which will occur during the MRI (5 times - 3 consecutive days)
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On each trial, participants will view one of four images and will be asked to guess whether it belongs to Category A or B. For each participant, the four images will be randomly assigned to be stimuli S1, S2, S3 and S4 (these are abstract visual stimuli denoted with numbers (stiumulus 1, stimulus 2, etc).
A different set of similar images (S5-S8; S9-S12, etc) will be used for repeated testing.
On any given trial, stimuli S1 and S3 will belong to Category A with 90% probability and to Category B with 10% probability, while stimuli S2 and S4 will belong to Category B with 90% probability and to Category A with 10% probability.
Stimuli S1 and S2 will be used in the reward-learning task and S3 and S4 in punishment-learning task.
Two stimuli per valence will be employed in order to balance category outcome frequencies, so that one stimulus in each task will be associated with each outcome.
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Before every MRI except the 2nd and 4th which will occur during the MRI (5 times - 3 consecutive days)
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協力者と研究者
スポンサー
捜査官
- 主任研究者:Miklos Argyelan, MD、Northwell Health
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
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
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
詳しくは
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