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The Efficacy of Transcutaneous Auricular Vagus Nerve Stimulation in Individuals With Tiletamine Use Disorder (taVNS-Tiletami)

1 lipca 2026 zaktualizowane przez: Shanghai Mental Health Center

Effect of Transcutaneous Auricular Vagus Nerve Stimulation on Patients With Tiletamine Use Disorder: A Randomized Double-Blind Sham-Controlled Trial

Participants diagnosed with tiletamine use disorder will be assigned to active or sham taVNS for 5 days. Clinical outcomes ( e.g., behavioral paradigms measures and clinical scales ) and physiological markers (e.g., EEG and ECG) will be evaluated at baseline, post-treatment, and 3-month follow-ups to determine therapeutic efficacy and mechanisms of action.

Przegląd badań

Status

Jeszcze nie rekrutacja

Warunki

Interwencja / Leczenie

Szczegółowy opis

Tiletamine use disorder has emerged as a significant public health concern characterized by persistent psychological craving and high relapse rates. This randomized, double-blind, sham-controlled clinical trial aims to evaluate whether transcutaneous auricular vagus nerve stimulation (taVNS) can reduce craving levels and improve other outcomes in individuals with tiletamine dependence. Multimodal assessments including electroencephalography (EEG), electrocardiography (ECG) , behavioral paradigms measures and clinical scales will be conducted before and after the treatment.

This study seeks to establish a non-invasive vagus nerve stimulation strategy for substance use disorders and explore the treatment mechanism.

Typ studiów

Interwencyjne

Zapisy (Szacowany)

30

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Lokalizacje studiów

    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Chiny, 200030
        • Shanghai Mental Health Center
        • Kontakt:

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły

Akceptuje zdrowych ochotników

Nie

Opis

Inclusion Criteria:

  • Age 18-60 years ≥6 years of education[7.1] DSM-5 diagnosis of substance use disorder related to tiletamine Tiletamine use ≥6 months and ≥1 time/week Ability to provide informed consent Willingness to complete follow-up assessments

Exclusion Criteria:

  • Severe cognitive impairment History of epilepsy, brain injury, neurological disease or serious psychiatric disease Use of cognition-enhancing medications within 6 months Other psychoactive substance abuse within past 5 years (except nicotine) Metal implants in the head or severe skin sensitivity

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Leczenie
  • Przydział: Randomizowane
  • Model interwencyjny: Przydział równoległy
  • Maskowanie: Potroić

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Active taVNS
Intervention: Transcutaneous Auricular Vagus Nerve Stimulation Stimulation site: Left cymba conchae Frequency: 20 Hz Pulse width: 500 μs Intensity: 0.5-4 mA (perceptible but non-painful) Session duration: 40 minutes Frequency: 4 sessions/day Treatment course: 5 days (20 sessions)
The stimulation duration is 40 minutes per session, administered four times daily for 5 consecutive days (20 sessions in total).
Pozorny komparator: Sham taVNS
Intervention: Sham Stimulation Site: Ipsilateral earlobe Same device appearance and parameters Minimal sensory stimulation without vagal activation Same treatment schedule as active group
Identical device appearance and parameters, with minimal sensory stimulation and no vagal activation. The treatment schedule is identical to that of the active group.

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Change of depressive symptoms
Ramy czasowe: Baseline, immediately after the intervention,one month after the intervention
The PHQ-9, fully known as the Patient Health Questionnaire-9, is a self-report assessment tool developed based on the diagnostic criteria in the American Diagnostic and Statistical Manual of Mental Disorders for screening and evaluating the severity of depression. The scale consists of nine items corresponding to the core symptoms of depression. Respondents rate the frequency of symptoms experienced over the past two weeks on a scale of 0 to 3. The total score ranges from 0 to 27, with higher scores indicating potentially more severe depressive symptoms.
Baseline, immediately after the intervention,one month after the intervention

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Change of stress symptoms
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
PSS stands for the Perceived Stress Scale. It is used to assess an individual's subjective perceptions of stress and the frequency of stress-related thoughts and feelings over the past month. The scale consists of 14 items, with derived 10-item and 4-item versions also available, and uses a five-point scoring system from 0 to 4, ranging from "never" to "very often". It provides a quick measure of an individual's perceived stress level. The total score ranges from 0 to 56, corresponding to three stress levels: normal (0-28), elevated (29-42), and high (43-56). The scale helps identify stress status and provides guidance for adjusting support resources.
Baseline, immediately after the intervention, one month after the intervention,
Change of the sleep quality
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
Sleep quality will be measured by the Pittsburgh Sleep Quality Index (PSQI). The total score of PSQI ranges from 0 to 21, in which higher scores mean poorer sleep quality.
Baseline, immediately after the intervention, one month after the intervention,
Change of the anxiety symptoms
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The GAD-7 is a self-report scale for assessing anxiety symptoms. It consists of seven items assessing: 1. nervousness or anxiety; 2. uncontrollable worry; 3. excessive worry; 4. difficulty relaxing; 5. restlessness; 6. irritability; and 7. a sense of imp
Baseline, immediately after the intervention, one month after the intervention,
Change of the risky decision-making performance
Ramy czasowe: Baseline, immediately after the intervention
Risky decision-making performance will be assessed using the Balloon Analogue Risk Task (BART). Higher average pumps in the BART indicate greater risk-taking propensity. Electroencephalography (EEG) will be used to measure neural electrical signals, where increases in relevant electrophysiological indicators may reflect heightened individual sensitivity to negative feedback. Higher frequency of continued dice rolls indicates greater risk propensity. Neural activity features related to the task will be analyzed, with specific patterns associated with risk evaluation and reward processing.
Baseline, immediately after the intervention
Changes in Negative Reinforcement Learning Behaviour
Ramy czasowe: Baseline, immediately after the intervention,
A negative reinforcement learning paradigm was used to assess avoidance-reversal learning behaviour. Behavioural response bias and learning rate were used to characterise negative reinforcement behavioural traits and negative reinforcement learning ability. EEG was recorded simultaneously, and changes in relevant electrophysiological indicators may serve as electrophysiological markers of changes in negative reinforcement learning behaviour.
Baseline, immediately after the intervention,
The change of alcohol craving
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
Alcohol craving will be measured by the alcohol craving Visual Analog Scale (VAS). The total score of VAS ranged from 0 to 10, in which higher scores mean a higher level of alcohol craving.
Baseline, immediately after the intervention, one month after the intervention,
The change of alcohol use
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The AUDIT (the Alcohol Use Disorders Identification Test) consists of 10 items covering drinking frequency, alcohol consumption, alcohol dependence-related symptoms, and adverse consequences caused by alcohol use. Respondents complete the questionnaire based on their recent drinking behaviour, with each item scored according to different response levels. The total score ranges from 0 to 40. Higher scores indicate a higher risk of alcohol-related problems, and the scale can be used to identify hazardous drinking, harmful drinking, and potential risk of alcohol dependence.
Baseline, immediately after the intervention, one month after the intervention,
The changes of Resilience
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The China version of the Connor-Davidson Resilience Scale (CD-RISC) consists of 25 items and includes three dimensions: tenacity (13 items), strength (8 items), and optimism (4 items). The scale uses a 5-point Likert scoring method, with scores from 0 to 4 representing "not true at all", "rarely true", "sometimes true", "often true", and "true nearly all the time", respectively. The total score ranges from 0 to 100, with higher scores indicating greater psychological resilience. The internal consistency coefficient of the Chinese version is 0.91.
Baseline, immediately after the intervention, one month after the intervention,
The condition of childhood experiences
Ramy czasowe: Baseline
Adverse Childhood Experiences (ACEs) includes 25 clinical items and 3 validity items. The scale uses a 5-point scoring system, ranging from "never true" to "very often true". Each subscale score ranges from 5 to 25 and is calculated by summing the scores of the items within that subscale. The total CTQ score is calculated by summing the subscale scores. Higher scores indicate more severe reported childhood maltreatment.
Baseline
The change of nicotine dependence
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The FTND is a self-report scale used to assess the severity of nicotine dependence among smokers. The scale usually consists of six items. The total score ranges from 0 to 10, with higher scores indicating more severe nicotine dependence. It can be used to assess the level of smoking addiction and support the development of smoking cessation interventions.
Baseline, immediately after the intervention, one month after the intervention,
Change of the self-control ability
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
Self-control ability will be measured using the Self-Control Scale (SCS). Higher scores of SCS indicate better self-regulation and impulse control.
Baseline, immediately after the intervention, one month after the intervention,
The changes of impulsive behavior
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
UPPS-P Impulsive Behavior Scale (UPPS-P) includes 59 items rated on a 4-point Likert scale. Respondents indicate their agreement or disagreement with statements using a 4-point scale (1 = Agree Strongly, 4 = Disagree Strongly). Scoring involves calculating a mean score for each of the five subscales (scaled 1-4) and a total impulsivity score.
Baseline, immediately after the intervention, one month after the intervention,
The changes of morningness-eveningness
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The Chinese version of the 5-item Morningness-Eveningness Questionnaire (rMEQ-5). The Chinese version of the MEQ-5 consists of five items selected from the Chinese version of the MEQ-19, namely items 1, 7, 10, 18, and 19.
Baseline, immediately after the intervention, one month after the intervention,
The change of impulsiveness
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The Barratt Impulsiveness Scale (BIS) consists of 30 items. Each item is rated according to the frequency of occurrence using a 4-point scoring method: rarely/never = 1, occasionally = 2, often = 3, and almost always/always = 4.
Baseline, immediately after the intervention, one month after the intervention,
The change of somatic symptom
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The Somatic Symptom Scale (SSS) consists of 20 items and is a self-report scale using a 4-point rating system (Table 1). A total raw score above 40 is considered positive.
Baseline, immediately after the intervention, one month after the intervention,
The change of behavioral inhibition/activation
Ramy czasowe: Baseline, immediately after the intervention, one month after the intervention,
The Behavioral Inhibition/Activation System Scale (BIS/BAS Scale) uses a 4-point scoring system, where 1 indicates "strongly agree" and 4 indicates "strongly disagree". Higher scores indicate greater activation of the behavioral inhibition system and behavioral activation system.
Baseline, immediately after the intervention, one month after the intervention,

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Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

1 lipca 2026

Zakończenie podstawowe (Szacowany)

1 grudnia 2027

Ukończenie studiów (Szacowany)

1 stycznia 2028

Daty rejestracji na studia

Pierwszy przesłany

1 lipca 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

1 lipca 2026

Pierwszy wysłany (Rzeczywisty)

8 lipca 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

8 lipca 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

1 lipca 2026

Ostatnia weryfikacja

1 czerwca 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • JDu-019

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIE

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .