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Non-invasive Vagus Nerve Stimulation for Parkinson's Disease (VNS)

2026年11月2日 更新者:Vincent Mok、Chinese University of Hong Kong

Although breakthroughs in the management of Parkinson's disease (PD) have emerged in recent decades resulting in better control in symptoms, majority of patients with PD are still living with various disabling motor and non-motor symptoms despite they are already receiving the best contemporary medical or surgical treatments available to them. There is obviously a need to develop additional treatment modality to further optimize the control of symptoms and/or slow the disease progression for patients having PD.

Vagus nerve stimulation (VNS), a type of noninvasive brain stimulation is believed to modify brain rhythms by modulating the nucleus of the solitary tract and locus coeruleus and other regions known to play a role in gait. Moreover, VNS may modulate inflammatory pathways and reduce oxidative stress, making it a potential disease modifying treatment approach for neurodegenerative diseases linked to neuroinflammation such as PD

Further study is warranted to explore the efficacy of non-invasive VNS for its effects on gait and other symptoms of PD as well as the anti-inflammatory effects.

調査の概要

状態

まだ募集していません

条件

介入・治療

詳細な説明

The objective of the present study is to investigate the feasibility, safety, and potential efficacy of 2 different non-invasive VNS stimulation protocols (conventional and exploratory) for patients with PD. The immediate effects of VNS as well as the medium-term effects of daily VNS at 2 and 4 weeks poststimulation, and the delayed effects of non-invasive VNS at 8 weeks of both stimulation protocols will be investigated. The effects of non-invasive VNS of the 2 different stimulation protocols will also be compared with sham stimulation. The study will be a randomized single blind study. The tested subjects, not the assessor, will be kept unaware of which treatment protocols they are receiving.

The investigator hypothesize the VNS stimulations may provide immediate effects, medium term effects and delayed effects.

研究の種類

介入

入学 (推定)

60

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

40年~75年 (大人、高齢者)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

全て

説明

Inclusion Criteria:

  1. Idiopathic PD as defined by the UK Parkinson's Disease Society Brain Bank Diagnostic Criteria

  2. Age 40 - 75 years old

  3. Presence of gait impairment as defined by any one of the below:

    a UPDRS Part 2 Item 15 (Walking) with a score of 2 b. UPDRS Part 3 Item 26 (leg Agility) with score of 2 or 3 c. UPDRS Part 3 Item 29 (Gait) with score of 1 or 2

  4. Availability of a caregiver at home

  5. Cantonese speaker

Exclusion Criteria:

  1. Patients with atypical parkinsonism (e.g., multiple system atrophy, progressive supranuclear palsy, dementia with Lewy Bodies)
  2. PD with dementia
  3. PD patients with DBS in-situ
  4. Severe PD with a Hoehn and Yahr staging of 4 or above
  5. Low blood pressure with systolic of < 110 mmHg or with postural hypotension as defined by a decrease in systolic and diastolic blood pressure by 20 mmHg and 10mmHg upon standing, respectively)
  6. Cardiac pacemaker in-situ

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

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:独身

武器と介入

参加者グループ / アーム
介入・治療
アクティブコンパレータ:conventional VNS

Parkinson Disease

The cVNS emits a low-voltage 5.56 KHz sinusoidal wave electrical signal bursts lasting 0.9 ms via two flat stimulation contact surfaces. (Figure 2) These bursts repeat once every 38 millisecond (ms). Each set of stimulation will be applied for 2 minutes. Stimulation current can be self-adjusted by the subject. This conventional stimulation waveform was approved by the US FDA for the treatment of migraines.

アクティブコンパレータ:exploratory VNS

The eVNS emits the company-proprietary low-voltage of 3~8 KHz sine-variant smooth-transition wave electrical signal bursts lasting near 0.9 ms via two flat stimulation contact surfaces. These bursts repeat once in intervals of approximately 40 ms. A potential benefit of this waveform is that it can produce less unpleasant skin sensations at a given current intensity and this may enhance the subject to tolerate higher current intensity than that of the conventional stimulation.

偽コンパレータ:sham VNS

The sVNS delivers mechanical motor vibrations to provide a similar perceptible stimulation feeling to the skin. No electrical stimulations are delivered. The device that delivers the sham stimulation is identical in appearance, weight, and user interface. A button to adjust "stimulation current" is also available in the sham device so as to allow the subject/caregiver to adjust the "stimulation current"

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
Change of gait
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Timed UP and Go test: Participant sits back in a standard armchair with their back against the chair and hands resting on the armrests. Regular footwear and usual walking aids (like a cane or walker) are used. On the word "Go", the person stands up, walks a distance of 3 meters (10 feet) to a marked line or cone at a normal, safe pace, turns around, walks back to the chair, and sits down again. A stopwatch starts the moment the word "Go" is spoken and stops the moment the person's buttocks touch the seat. The results in second will be interpret to assist mobility and risk of falling. The longer the time, the high risk of fall

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Severity and progression of Parkinson's disease
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using Unified Parkinson's Disease Rating Scale to motor and non-motor symptoms. Score from 0 to 4. 0 is normal while 4 is severe/marked impairment

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Quantitative Gait Assessment
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using an app to track the mobility of participants in a 20 sec walking

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Cognitive status
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using Hong Kong Montreal Cognitive Assessment to evaluate the cognitive status. score from 0-30. The lower the score, the more cognitive impaired.

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Change in mood
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

Using Geriatric depression scale which contain 15 questions. Score from 0-15. The higher the score, the more severe the depressed mood

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

二次結果の測定

結果測定
メジャーの説明
時間枠
Change of blood pressure
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Safety measures- record of adverse event and serious adverse event
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

To investigate any possibility and relativity of AE and SAE with the treatment

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Electrocardiogram
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

To investigate any possibility and relativity of the change of ECG with the treatment

Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

その他の成果指標

結果測定
時間枠
Blood-based biomarkers
時間枠:Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits
Baseline, Day 1 stimulation visit, 4 week post-home stimulation visits and 8 week post-home stimulation visits

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研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年11月20日

一次修了 (推定)

2027年12月31日

研究の完了 (推定)

2028年6月30日

試験登録日

最初に提出

2026年9月22日

QC基準を満たした最初の提出物

2026年10月28日

最初の投稿 (実際)

2026年11月2日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月3日

QC基準を満たした最後の更新が送信されました

2026年11月2日

最終確認日

2026年11月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • 2025.519

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?

はい

IPD プランの説明

only IPD used in the results publication will be shared

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米国FDA規制機器製品の研究

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