A Randomized Controlled Trial to Test the Effects Oxytocin and Vibration Have on Heat Pain Threshold After UV-B Burn

January 8, 2026 updated by: Wake Forest University Health Sciences

A Randomized Controlled Trial to Test Whether Oxytocin Amplifies the Effect of Vibration to Increase Heat Pain Threshold After UV-B Burn

This study aims to answer the question: Does oxytocin increase the pain threshold on thermal heat pain in the presence of vibration on an area of skin exposed to a mild sunburn?

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The goal of this clinical trial is to test whether intravenous oxytocin increases the analgesic effect of vibration on heat pain threshold of skin that has been exposed to Ultraviolet-B (UV-B) burn (mild sunburn). Researchers will compare oxytocin (a hormone that naturally occurs in the body) to a placebo (a look-alike substance that contains no drug) to see if oxytocin works to increase the pain threshold (the lowest intensity at which one begins to perceive or sense a stimulus as being painful).

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
38

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • North Carolina
      • Winston-Salem, North Carolina, United States, 27157
        • Atrium Health Wake Forest Baptist Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Male or female > 18 and ≤55 years of age, Body Mass Index (BMI) <40
  • Generally in good health as determined by the Principal Investigator based on prior medical history, and as assessed to be American Society of Anesthesiologists physical status 1, 2, or 3
  • Fitzpatrick Scale rating I through III

Exclusion Criteria:

  • History of skin cancer
  • Dark enough skin complexion that would make it infeasible to determine the minimal erythematous dose of UV-B irradiation. Anyone Fitzpatrick Scale score >3 will be excluded
  • Neuropathy, chronic pain (located in any body location that is being treated), diabetes mellitus, or taking benzodiazepines or pain medications on a daily basis
  • Pregnancy or currently breast feeding
  • Subjects with current or history of ventricular tachycardia, atrial fibrillation or prolonged QT interval
  • Subjects with past or current history of hyponatremia or at risk for hyponatremia; anyone taking thiazide diuretics, loop diuretics, combination diuretics, lithium, carbamazepine, enalapril, Ramipril, celecoxib, temazepam, gliclazide, glimepiride, glibenclamide, glipizide, omeprazole, pantoprazole, desmopressin, SSRI's, MAOI, or the recreational drug ecstasy
  • Subjects with a known latex allergy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: oxytocin
Two 30 minute infusions of oxytocin, 10 International Units (IU) separated by 30 minutes. To avoid potential unmasking by facial flushing which can occur at the beginning of high rates of oxytocin administration, the first infusion will consist of two steps beginning with a rate of 0.125 IU oxytocin per minute for 5 minutes, then increased to 0.375 IU oxytocin for 25 minutes. The second infusion will be a constant rate of 0.333 IU oxytocin per minute for 30 minutes.
Drug: oxytocin
Oxytocin 10 IU will be administered over 30 minutes by intravenous infusion and repeated 30 minutes after the end of the first infusion.
Placebo Comparator: placebo
Two 30 minute infusions of placebo separated by 30 minutes. The first infusion will consist of two steps, using an equivalent volume of placebo fluid infusion as in the oxytocin arm. This will consist of a slower rate in the first 5 minutes and more rapid rate for the last 25 min. The second placebo solution infusion will be a constant rate and volume equivalent to that used in the oxytocin arm.
Drug: placebo
A placebo will be administered over 30 minutes by intravenous infusion and repeated 30 minutes after the end of the first infusion.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Difference between heat pain threshold
Time Frame: 24 hours after UV-B exposure
Difference between heat pain threshold at 24 hours after Ultraviolet-B (UV-B) exposure at 3x minimum erythematous dose. The difference between the average threshold for stimuli #5-8 and the average threshold for stimuli #13-17 at baseline and 2 hours after the beginning of the oxytocin or placebo infusion will be used. The values are measured in degrees Celsius. A lower temperature indicates more sensitivity to heat pain.
24 hours after UV-B exposure

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Difference between heat pain threshold
Time Frame: Two days after UV-B exposure
Difference between heat pain threshold at 24 hours after UV-B exposure at 3x minimum erythematous dose. The difference between the average threshold for stimuli #5-8 and the average threshold for stimuli #13-17 at baseline and 2 days after the beginning of the oxytocin or placebo infusion will be used. The values are measured in degrees Celsius. A lower temperature indicates more sensitivity to heat pain.
Two days after UV-B exposure
Touch and pain threshold to von Frey filament application
Time Frame: 24 hours after UV-B exposure
Using an electronic von Frey instrument, threshold for touch and a prickly pain sensation will be determined at the site of UV-B exposure at 3x minimum erythematous dose and in normal skin to estimate the threshold for touch and prickly pain sensation. The measure will be recorded in grams. A lower pressure indicates more sensitivity to touch and pain.
24 hours after UV-B exposure
Touch and pain threshold to von Frey filament application
Time Frame: Two days after UV-B exposure
Using an electronic von Frey instrument, threshold for touch and a prickly pain sensation will be determined at the site of UV-B exposure at 3x minimum erythematous dose and in normal skin to estimate the threshold for touch and prickly pain sensation. The measure will be recorded in grams. A lower pressure indicates more sensitivity to touch and pain.
Two days after UV-B exposure

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Wake Forest University Health Sciences

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Institute of Neurological Disorders and Stroke (NINDS)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: James C Eisenach, M.D., Wake Forest University Health Sciences

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 5, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 20, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 20, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 17, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 17, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 21, 2024

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 12, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 8, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • IRB00120861
  • 5P01NS119159 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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