メタンフェタミン使用障害における欲求に対する rTMS
メタンフェタミン使用障害における渇望を標的とする反復的磁気刺激の使用
The primary aim of this project is to use a randomized single-blind sham-controlled study to investigate if high frequency repetitive transmagnetic stimulation (HF-rTMS) can modulate cue-induced craving in adult methamphetamine (METH) users. The investigators hypothesize that HF-rTMS directed at left dorsolateral prefrontal cortex (DLPFC) will result in a reduction in craving for METH compared to sham-controlled rTMS in adults with methamphetamine use disorder (MUD) as evidenced by validated measures of METH craving. Neurobiologically, the investigators anticipate rTMS mediated stimulation of the DLPFC could result in inhibition of cue-induced craving through potential disruption of involved circuitry. The current project proposes that participants who are recently abstinent from METH will be randomized into four experimental groups to provide two rTMS conditions (real versus sham) and two picture cues conditions (METH versus neutral). The experiment will have an induction phase where each subject will receive 10 daily treatments within 2 weeks. Just before each rTMS/sham session participants will be shown visual cues (METH or neutral). Participants will then undergo a maintenance phase for an additional month with assessments to evaluate craving and relapse. Urine samples for urine drug screening (UDS) will be collected at screening day and on days 1, 5 and 10. Just before each rTMS/sham session participants will be shown visual cues (METH and neutral). VAS craving scores will be assessed before and after picture presentation and after the rTMS/sham session. Before the first and 10th treatment session, participants were evaluated by the the Stimulant Craving Questionnaire (STCQ) and the Severity of Dependence Scale (SDS) questionnaires. Participants will then undergo a maintenance phase for an additional month. During the first week of maintenance, three rTMS/sham sessions will be administered. During each of the following 3 weeks, one rTMS/sham session will be given per week. As with the induction phase, urine samples will be collected for screening and STCQ and the SDS questionnaires will be completed at each maintenance session. To evaluate the long-term effects of the rTMS treatment, the investigators plan on contacting participants 6 months after treatment termination for all subjects who completed the 10 treatment sessions. During that phone conversation, craving and relapse will again be assessed.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- 適用できない
連絡先と場所
研究連絡先
研究連絡先
- 名前：Brandon J Cornejo, MD, PhD
- 電話番号：503-721-7964
- メール：brandon.cornejo@va.gov
研究連絡先のバックアップ
- 名前：Holly McCready
- 電話番号：503-721-7964
研究場所
-
-
Oregon
-
Portland、Oregon、アメリカ、97239
- 募集
- Veterans Affairs Portland Health Care System
-
コンタクト：
- Holly McCready
- 電話番号：503-721-7964
-
コンタクト：
- Brandon J Cornejo, MD, PhD
- 電話番号：503-721-7964
-
主任研究者：
- Brandon J Cornejo, MD, PhD
-
-
参加基準
適格基準
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:
- Subjects must use at least 0.5 g per day at least 5 days per week and have a minimum 12-month history of METH abuse.
- Subjects must meet DSM V diagnosis for methamphetamine use disorder.
- Subjects must have a minimum 4-week period of detoxification and a desire to stop using methamphetamine.
Exclusion Criteria:
- Present or past history of neurological disorder
- The present history of a DSM IV Axis I or DSM V primary psychiatric disease (apart from MUD and depressive symptoms defined as a Hamilton Depression Scale Score < 7 ("normal"))
- Scores on the Hamilton Depression Scale > 8, possibly indicating clinical depression
- No current abuse of drugs other than methamphetamine (except nicotine). Urine-screening tests for psychoactive drugs will be performed to corroborate the lack of drug use.
- Individuals meeting criteria for cannabis use disorder or alcohol use disorder
- Medical illness that can affect brain function
- Past or present history of cardiovascular disease or high blood pressure
- Any history of epilepsy or a known history of seizure disorder
- A history of metal in the head or chest area (except dental fillings or braces)
- Current consumption of psychiatric medication
- Any other medical, neurological or neurosurgical condition that would preclude the administration of repetitive transmagnetic stimulation
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：処理
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：トリプル
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 |
|---|---|
|
実験的：Treatment rTMS + meth pictures
Participants in this group will receive real repetitive transcranial magnetic stimulation treatments. Before each rTMS session they will be exposed to a series of methamphetamine-related pictures to evaluate response to methamphetamine visual cues while receiving real rTMS treatments. This group will be referred to as real METH (RM). |
A real magnet will be used during rTMS treatments, which will look identical to the sham magnet. The participants and treatment facilitator will be blinded to which magnet will be used. High frequency repetitive transmagnetic stimulation (rTMS) will be directed at left dorsolateral prefrontal cortex (DLPFC) during 10 daily treatments within two weeks then 6 more treatments during the following month.
他の名前：
Just before each rTMS session, participants will be shown methamphetamine-related pictures |
|
アクティブコンパレータ：Treatment rTMS + neutral pictures
Participants in this group will receive real repetitive transcranial magnetic stimulation treatments. Before each rTMS session they will be exposed to a series of neutral pictures to evaluate response to neutral visual cues while receiving real rTMS treatments. This group will be referred to as real neutral (RN). |
A real magnet will be used during rTMS treatments, which will look identical to the sham magnet. The participants and treatment facilitator will be blinded to which magnet will be used. High frequency repetitive transmagnetic stimulation (rTMS) will be directed at left dorsolateral prefrontal cortex (DLPFC) during 10 daily treatments within two weeks then 6 more treatments during the following month.
他の名前：
Just before each rTMS session, participants will be shown neutral pictures |
|
偽コンパレータ：Sham rTMS + meth pictures
Participants in this group will receive sham repetitive transcranial magnetic stimulation treatments. Before each rTMS session they will be exposed to a series of methamphetamine-related pictures to evaluate response to methamphetamine visual cues while receiving sham rTMS treatments. This group will be referred to as sham METH (SM). |
Just before each rTMS session, participants will be shown methamphetamine-related pictures A sham magnet will be used during rTMS treatments, which will look identical to the real magnet. The participants and treatment facilitator will be blinded to which magnet will be used. The sham rTMS treatments will be directed at left dorsolateral prefrontal cortex (DLPFC) during 10 daily treatments within two weeks then 6 more treatments during the following month. |
|
偽コンパレータ：Sham rTMS + neutral pictures
Participants in this group will receive sham repetitive transcranial magnetic stimulation treatments. Before each rTMS session they will be exposed to a series of neutral pictures to evaluate response to neutral visual cues while receiving sham rTMS treatments. This group will be referred to as sham neutral (SN). |
Just before each rTMS session, participants will be shown neutral pictures A sham magnet will be used during rTMS treatments, which will look identical to the real magnet. The participants and treatment facilitator will be blinded to which magnet will be used. The sham rTMS treatments will be directed at left dorsolateral prefrontal cortex (DLPFC) during 10 daily treatments within two weeks then 6 more treatments during the following month. |
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 |
|---|---|---|
|
Effect of rTMS directed at left DLPFC on craving for methamphetamine as assessed by the Severity of Dependence Scale.
時間枠：6 weeks
|
The Severity of Dependence Scale (SDS) is a 5-item questionnaire that provides a score indicating the severity of dependence on methamphetamine. Each of the five items is scored on a 4-point scale (0-3). The total score is obtained through the addition of the 5-item ratings and will range from 0 to 15. The higher the score the higher the level of dependence. Pre and post differences in craving will be assessed. |
6 weeks
|
|
Effect of rTMS directed at left DLPFC on craving for methamphetamine as assessed by a Visual Analog Scale (VAS).
時間枠：6 weeks
|
The visual analogue scale (VAS) is a fixed-length horizontal line on which the participant draws a line between the two anchors of "no cravings at all" and "most intense craving imaginable". The distance between the "no cravings at all" anchor and the participants line is measured and reported as a value between 0 and 100. The higher the value, the more intense the participants cravings are. Pre and post differences in craving will be assessed. |
6 weeks
|
|
Effect of rTMS directed at left DLPFC on craving for methamphetamine as assessed by the Stimulant Craving Questionnaire (STCQ).
時間枠：6 weeks
|
The Stimulant Craving Questionnaire-Brief (STCQ) is a 10-item self-report measure that assesses current craving for methamphetamine, using a seven-point scale, with answers ranging from 0 ("strongly disagree") to 6 ("strongly agree"). A composite score is generated for each participant by averaging the responses over all 10 questions. The scores can range from 0 to 6. The higher the composite score, the stronger the current craving. Pre and post differences in craving will be assessed. |
6 weeks
|
二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Effect of craving for methamphetamine on relapse status after rTMS directed at left DLPFC.
時間枠：5 months
|
Relapse will be determined by self-report and/or positive urine drug screens. |
5 months
|
|
Effect of cue type (methamphetamine versus neutral) on methamphetamine craving after rTMS treatment.
時間枠：6 weeks
|
A composite craving score will be generated by adding each of the three craving measure scores (Severity of Dependence, Visual Analog Scale, and Stimulant Craving Questionnaire) for each participant who received real rTMS treatments. The composite score can range from 0 to 121, where 0 indicates no cravings for methamphetamine and 121 is the strongest possible cravings for methamphetamine. Pre and post differences in craving will be compared between participants who were exposed to methamphetamine cues before each session and those who were exposed to neutral cues. |
6 weeks
|
協力者と研究者
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
- GPSYC0236A
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?
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米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
米国で製造され、米国から輸出された製品。
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