Cortical Excitability Modulation With ctDCS in Fibromyalgia. (ctDCS)
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ClinicalTrials.gov Identifier: NCT05963321 |
Recruitment Status :
Recruiting
First Posted : July 27, 2023
Last Update Posted : April 4, 2024
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Fibromyalgia Chronic Pain | Device: TDCS | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 92 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | Cortical Excitability Modulation With Cerebellar Transcranial Direct Current Stimulation in Fibromyalgia: a Randomized Clinical Trial |
Actual Study Start Date : | June 15, 2023 |
Estimated Primary Completion Date : | December 2024 |
Estimated Study Completion Date : | December 2024 |
Arm | Intervention/treatment |
---|---|
Active Comparator: Active cerebellum electrode and active M1 electrode
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Device: TDCS
Two tDCS devices will be used simultaneously. The intervention consists of a tDCS session in which the active electrode will be located in the cerebellum and/or in the primary motor cortex (4 stimulation protocols that will be implemented; active cerebellum electrode and active M1 electrode, sham cerebellum electrode and active M1 electrode, active cerebellum and sham M1 electrode, sham cerebellar electrode and sham M1 electrode) and the cathode in the contralateral supraorbital region. |
Active Comparator: Sham cerebellar electrode and active M1 electrode
|
Device: TDCS
Two tDCS devices will be used simultaneously. The intervention consists of a tDCS session in which the active electrode will be located in the cerebellum and/or in the primary motor cortex (4 stimulation protocols that will be implemented; active cerebellum electrode and active M1 electrode, sham cerebellum electrode and active M1 electrode, active cerebellum and sham M1 electrode, sham cerebellar electrode and sham M1 electrode) and the cathode in the contralateral supraorbital region. |
Active Comparator: Active cerebellum electrode and sham M1 electrode
|
Device: TDCS
Two tDCS devices will be used simultaneously. The intervention consists of a tDCS session in which the active electrode will be located in the cerebellum and/or in the primary motor cortex (4 stimulation protocols that will be implemented; active cerebellum electrode and active M1 electrode, sham cerebellum electrode and active M1 electrode, active cerebellum and sham M1 electrode, sham cerebellar electrode and sham M1 electrode) and the cathode in the contralateral supraorbital region. |
Sham Comparator: Sham cerebellar electrode and sham M1 electrode
|
Device: TDCS
Two tDCS devices will be used simultaneously. The intervention consists of a tDCS session in which the active electrode will be located in the cerebellum and/or in the primary motor cortex (4 stimulation protocols that will be implemented; active cerebellum electrode and active M1 electrode, sham cerebellum electrode and active M1 electrode, active cerebellum and sham M1 electrode, sham cerebellar electrode and sham M1 electrode) and the cathode in the contralateral supraorbital region. |
- Change in motor evoked potential (MEP). [ Time Frame: Up to 60 minutes after tDCS onset. ]Change from before and after tDCS onset on MEP. Assessed by a variation in the amplitude obtained by 20 stimuli with an intensity of 120% of the MT. The MEP will be considered the arithmetic mean of the amplitude of the wave recorded by the EMG.
- Change in pain level [ Time Frame: Up to 60 minutes after tDCS onset. ]The study assessed the change in pain scores before and after tDCS onset using the Numerical Pain Scale (NPS). The NPS scores range from zero (no pain) to a maximum of ten (severe pain).
- Change in the Brief Pain Inventory (BPI) score [ Time Frame: Up to 15 days after tDCS onset. ]It is a quick, simple, and easy-to-apply questionnaire that allows a multidimensional pain assessment to be carried out. The BPI consists of 15 items that determine the severity, existence, location, functional interference, applied therapeutic strategies, and efficacy of pain treatment. In the research, this questionnaire will be implemented at baseline, 8 and 15 days after tDCS onset.
- Change in Function of corticospinal pathway [ Time Frame: Up to 60 minutes after tDCS onset. ]Measures of cortical excitability obtained through TMS include the silent period (CSP),intra-cortical facilitation (ICF) and intra-cortical inhibition (SICI). The TMS measures will be performed at two different times: before and after tDCS onset.
- change in conditioned pain modulation (CPM) [ Time Frame: Up to 60 minutes after tDCS onset. ]Conditioned pain modulation (CPM) is an experimental psychophysical measure that assesses supraspinal descending inhibitory mechanisms of pain modulation. In practice, a constant noxious stimulus (conditioning stimulus) is applied to one part of the body and a phasic stimulus (stimulus to be tested) to a distant part of the body before, during, and after the conditioning stimulus. The CPM is analyzed through the reduction that occurs in the perception of pain in the test stimulus.The conditioned pain modulation will be performed at two different times: before and after the single tDCS onset.
- Change in the quantitative sensory test (QST) [ Time Frame: Up to 60 minutes after tDCS onset. ]
The quantitative sensory test (QST) evaluates the function of myelinated, small and unmyelinated fibers, also including the function of the spinothalamic tract and nociceptive fibers. In addition, the QST represents a non-invasive method, which determines the gain or loss of sensory perception in response to external stimuli of controlled intensity in a previously determined body area.
The following tests will be carried out in the research:
- Painful pressure threshold: performed with a pressure algometer, applied on the upper extremity.
- Cold pressor test: the patient puts his extremity in a container with ice. The tolerance time will be determined.
- Sensation of heat: using a heat electrode applied to the extremity corresponding to the sensitive alteration, the first sensation of heat and the painful threshold of light, medium and maximum heat will be evaluated.
The QST measures will be performed at two different times; before and after the tDCS onset.
- levels of Brain derived neurotrophic factor [ Time Frame: Blood samples will be collected at baseline, before tDCS onset. ]Blood samples will be collected at baseline in order to determine BDNF serum levels using a standardized kit
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Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | Female |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Right-handed women aged 18 to 65 years; who can read and write
- Confirmed diagnosis of fibromyalgia according to the criteria of the American College of Rheumatology (2010-2016).
- Pain score equal to or greater than 4 on the Numerical Pain Scale (Score 0-10) on most days in the last 3 months.
Exclusion Criteria:
- Reside outside Porto Alegre area.
- Confirmed pregnancy
- Contraindications to TMS and tDCS: metallic implant in the brain; medical devices implanted in the brain, heart pacemaker; cochlear implant; history of alcohol or drug abuse in the last 6 months; neurological pathologies; hx of head trauma or neurosurgery; decompensated systemic diseases and chronic inflammatory diseases (lupus, rheumatoid arthritis, Reiter's syndrome); uncompensated hypothyroidism; personal history of cancer, past or undergoing treatment.
- Participants with diagnosis or recent contact with COVID will be excluded.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05963321
Contact: Wolnei Caumo, PhD | 55 51 33596377 ext 6377 | wcaumo@hcpa.edu.br |
Brazil | |
Hospital de Clinicas de Porto Alegre | Recruiting |
Porto Alegre, Rio Grande Do Sul, Brazil, 90.450-120 | |
Contact: Wolnei Caumo, PhD +5551 3359 8083 wcaumo@hcpa.edu.br | |
Principal Investigator: Wolnei Caumo, PhD | |
Hospital de clinicas de Porto Alegre | Recruiting |
Porto Alegre, Rio Grande Do Sul, Brazil, 9410000 | |
Contact: Daniel Fernando Arias Betancur 51997511560 dbetancur@hcpa.edu.br |
Study Director: | Wolnei Caumo, PhD | Hospital de Clinicas de Porto Alegre |
Responsible Party: | Hospital de Clinicas de Porto Alegre |
ClinicalTrials.gov Identifier: | NCT05963321 |
Other Study ID Numbers: |
2022-0504 |
First Posted: | July 27, 2023 Key Record Dates |
Last Update Posted: | April 4, 2024 |
Last Verified: | April 2024 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
Fibromyalgia Cerebellum Transcranial direct current magnetic stimulation Transcranial magnetic stimulation |
Fibromyalgia Myofascial Pain Syndromes Chronic Pain Pain Neurologic Manifestations |
Muscular Diseases Musculoskeletal Diseases Rheumatic Diseases Neuromuscular Diseases Nervous System Diseases |