HealthyIESNCT02312752
Intra-epidermal Stimulation (IES) of Small Nerve Fibers (A-delta Fibers)
A study testing Intra-epidermal stimulation electrode in people with Healthy, run by University of Minnesota at 1 site in United States.
Trial summary
The purpose of the study is to determine whether a particular type of nerve fibers, A-delta fibers, can be tested in an Electromyography (EMG) lab on a routine basis. Normal, healthy volunteers will be enrolled in this study. Read more about this study
- Who is it for?
- Ages 21 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- Intra-epidermal stimulation electrode
- Type of treatment
- Medical device
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- Dec 2014to Jun 2018
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 21 to 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Individuals aged 21 through 60 years with no history or clinical signs of neuropathy.
Who cannot join
- History of peripheral nerve disease or disease of somatosensory pathways.
- Abnormalities on neurologic examination.
- Prior or current exposure to known neurotoxins, such as excessive alcohol use or chemotherapy.
- Neurologic or psychiatric conditions that would prevent the subject from being able to cooperate with testing.
Trial locations and contacts
1 site in 1 country.
United States1 site
University of Minnesota
Minneapolis, Minnesota, 55455
About this study
The purpose of the study is to determine whether a particular type of nerve fibers, A-delta fibers, can be tested in an Electromyography (EMG) lab on a routine basis. Normal, healthy volunteers will be enrolled in this study.
Read the detailed description
The epidermis is the outermost layer of the skin that includes skin cells and small nerve fibers called A-delta fibers. A-delta fibers send signals to the brain about pin-prick type of pain and temperature. The investigators want to study whether the investigators can stimulate A-delta fibers and document this by recording electrical potentials from the nerves in subjects' limbs.
Study Procedures:
A small piece of plastic will be applied to your foot and your hand. A tiny sharp tip protrudes from this piece of plastic. You will be barely able to feel this sharp tip when touching the piece of plastic. This is the electrode for intra-epidermal stimulation.
With stimulation, you will feel a pin-prick type of sensation. The stimulus will be adjusted so that you barely feel the pin-prick type of sensation. The investigators will record responses of stimulation from nerves in your skin.
- Conditions
- Healthy
- Being tested
- Intra-epidermal stimulation electrode
- Keywords
- Intra-epidermal stimulation in healthy control subjects
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Intra-epidermal stimulation electrodeDevice
A small piece of plastic with a tiny sharp protruding tip (the intra-epidermal stimulation electrode) will be applied to the foot and hand. Small "sticker" electrodes will be placed over nerves on the forearm or ankle. A stimulus will be applied to the electrode for intra-epidermal stimulation. The stimulus will be gradually increased from no stimulus to a stimulus that is barely felt as a pin-prick type of sensation. Thereafter, the stimulus will be applied 5-15 times per second for 10 periods of 40-60 seconds.
| Study group | Role | What they receive |
|---|---|---|
| Intra-epidermal stimulation | Other | A small piece of plastic with a tiny sharp protruding tip (the intra-epidermal stimulation electrode) will be applied to the foot and hand. Small "sticker" electrodes will be placed over nerves on the forearm or ankle. A stimulus will be applied to the electrode for intra-epidermal stimulation. The stimulus will be gradually increased from no stimulus to a stimulus that is barely felt as a pin-prick type of sensation. Thereafter, the stimulus will be applied 5-15 times per second for 10 periods of 40-60 seconds. Receives: Device: Intra-epidermal stimulation electrode |
What is being measured
The primary outcome is the main question the study is designed to answer.
Feasibility to selectively stimulate and record from A-delta nerve fibers using the intra-epidermal stimulation electrode as measured by electromyography (EMG)
Stimulate and record from A-delta nerve fibers in normal individual using intra-epidermal stimulation electrode.
Measured: one year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Dec 2014 (estimated)
- Study startDec 2014
- Primary completionJun 2018
- Study completionJun 2018
Why it stopped: Electrodes required gas sterilization before re-use which was not feasible
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by University of MinnesotaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Minnesota
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- David Walk, MD, Principal investigator, University of Minnesota
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02312752
- Sponsor's protocol ID
- 140103
- Acronym
- IES
- Status last verified
- May 2019
- First submitted
- 12 Nov 2014
- Last updated
- 21 May 2019
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 May 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Intra-epidermal Stimulation (IES) of Small Nerve Fibers (A-delta Fibers)
- ClinicalTrials.gov ID
- NCT02312752
- Acronym / sponsor ID
- IES / 140103
- Conditions
- Healthy
- Keywords
- Intra-epidermal stimulation in healthy control subjects
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: Electrodes required gas sterilization before re-use which was not feasible
- Enrolment
- 0 participants (actual)
- Lead sponsor
- University of MinnesotaUniversity, hospital or other
- Study start
- Dec 2014 (actual)
- Primary completion
- Jun 2018 (actual)
- Study completion
- Jun 2018 (actual)
- First posted
- 9 Dec 2014 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of the study is to determine whether a particular type of nerve fibers, A-delta fibers, can be tested in an Electromyography (EMG) lab on a routine basis. Normal, healthy volunteers will be enrolled in this study.
Detailed description
The epidermis is the outermost layer of the skin that includes skin cells and small nerve fibers called A-delta fibers. A-delta fibers send signals to the brain about pin-prick type of pain and temperature. The investigators want to study whether the investigators can stimulate A-delta fibers and document this by recording electrical potentials from the nerves in subjects' limbs.
Study Procedures:
A small piece of plastic will be applied to your foot and your hand. A tiny sharp tip protrudes from this piece of plastic. You will be barely able to feel this sharp tip when touching the piece of plastic. This is the electrode for intra-epidermal stimulation.
With stimulation, you will feel a pin-prick type of sensation. The stimulus will be adjusted so that you barely feel the pin-prick type of sensation. The investigators will record responses of stimulation from nerves in your skin.
Study design
- Primary purpose
- Other
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Intra-epidermal stimulation | Other | Device: Intra-epidermal stimulation electrodeA small piece of plastic with a tiny sharp protruding tip (the intra-epidermal stimulation electrode) will be applied to the foot and hand. Small "sticker" electrodes will be placed over nerves on the forearm or ankle. A stimulus will be applied to the electrode for intra-epidermal stimulation. The stimulus will be gradually increased from no stimulus to a stimulus that is barely felt as a pin-prick type of sensation. Thereafter, the stimulus will be applied 5-15 times per second for 10 periods of 40-60 seconds. |
Who may qualify
- Ages
- 21 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (1 listed)
- Individuals aged 21 through 60 years with no history or clinical signs of neuropathy.
Key exclusion criteria (4 listed)
- History of peripheral nerve disease or disease of somatosensory pathways.
- Abnormalities on neurologic examination.
- Prior or current exposure to known neurotoxins, such as excessive alcohol use or chemotherapy.
- Neurologic or psychiatric conditions that would prevent the subject from being able to cooperate with testing.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Intra-epidermal stimulation electrodeA small piece of plastic with a tiny sharp protruding tip (the intra-epidermal stimulation electrode) will be applied to the foot and hand. Small "sticker" electrodes will be placed over nerves on the forearm or ankle. A stimulus will be applied to the electrode for intra-epidermal stimulation. The stimulus will be gradually increased from no stimulus to a stimulus that is barely felt as a pin-prick type of sensation. Thereafter, the stimulus will be applied 5-15 times per second for 10 periods of 40-60 seconds. | Device | Intra-epidermal stimulation |
Primary outcome
Feasibility to selectively stimulate and record from A-delta nerve fibers using the intra-epidermal stimulation electrode as measured by electromyography (EMG)
Time frame: one year
Stimulate and record from A-delta nerve fibers in normal individual using intra-epidermal stimulation electrode.
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 May 2019.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
David Walk, MD principal investigator
University of Minnesota
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Intra-epidermal stimulation electrode in people with Healthy, run by University of Minnesota at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: withdrawn, as of the sponsor's last update on 21 May 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Feasibility to selectively stimulate and record from A-delta nerve fibers using the intra-epidermal stimulation electrode as measured by electromyography (EMG) (time frame: one year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 21 May 2019.