ItchNCT05249387
Characterization of Bovine Adrenal Medulla as a New Surrogate Model of Non-histaminergic Itch
A study testing A-967079 and BAM8-22 application, A-967079 and BAM8-22 application after 5 minutes. and A-967079 application. in people with Itch, run by Aalborg University at 1 site in Denmark.
Trial summary
With this experiment, the experimenter wish evaluate the role of TRPA1 on non-histaminergic itch induced by BAM8-22 Read more about this study
- Who is it for?
- Ages 18 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Itch
- What is being tested?
- A-967079 and BAM8-22 application, A-967079 and BAM8-22 application after 5 minutes. and A-967079 application.
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 22 participants
- Where
- 1 siteDenmark
- Study dates
- 11 Feb 2022to 30 Oct 2022
- 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 18 to 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy men and women
- 18-60 years
- Speak and understand English
Who cannot join
- Pregnancy or lactation
- Drug addiction defined as any use of cannabis, opioids or other drugs
- Previous or current history of neurological, dermatological, immunological musculoskeletal, cardiac disorder or mental illnesses that may affect the results (e.g. neuropathy, muscular pain in the upper extremities, etc.)
- Moles, wounds, scars or tattoos in the area to be treated or tested
- Lack of ability to cooperate •
- Current use of medications that may affect the trial such as antihistamines and pain killers.
Show all 9Show fewer
- Skin diseases
- Consumption of alcohol or painkillers 24 hours before the study days and between these - Acute or chronic pain •
- Participation in other trials within 1 week of study entry (4 weeks in the case of pharmaceutical trials)
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Characterization of Bovine Adrenal Medulla (BAM8-22) as a New Surrogate Model of Non-histaminergic Itch
With this experiment, the experimenter wish evaluate the role of TRPA1 on non-histaminergic itch induced by BAM8-22
Read the detailed description
With this experiment, the experimenter wish evaluate the role of TRPA1 on non-histaminergic itch induced by BAM8-22 2 (Bovine Adrenal Medulla), which is found naturally in the human body and which has proved to evoke itch. To evaluate the role of TRPA1 it will be used a TRPA1 antagonist (A-967079)
- Conditions
- Itch
- Being tested
- A-967079 and BAM8-22 application, A-967079 and BAM8-22 application after 5 minutes., A-967079 application., Vehicle and BAM8-22 application.
- Medical subject headings
- Pruritus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
A-967079 and BAM8-22 applicationDrug
A-967079 solution (in PBS 0.5 mg/ml, subcutaneous injection of 0.1ml) and BAM8-22 with inactivate cowhage spicules 20 µl of BAM8-22 will be applied to a previously determined area on the volar forearm using inactivate cowhage spicules
A-967079 and BAM8-22 application after 5 minutes.Drug
A-967079 solution (in PBS 0.5 mg/ml, subcutaneous injection of 0.1ml). BAM8-22 with inactivate cowhage spicules 20 µl of BAM8-22 will be applied 5 minutes after to a previously determined area on the volar forearm using inactivate cowhage spicules
A-967079 application.Drug
A-967079 solution (in PBS 0.5 mg/ml, subcutaneous injection of 0.1ml) will be applied to a previously determined area on the volar forearm
Vehicle and BAM8-22 application.Drug
Vehicle (in PBS, subcutaneous injection of 0.1ml) and BAM8-22 with inactivate cowhage spicules 20 µl of BAM8-22 will be applied to a previously determined area on the volar forearm using inactivate cowhage spicules
| Study group | Role | What they receive |
|---|---|---|
| A-967079 Injections + BAM8-22 | Experimental | Not described Receives: Drug: A-967079 and BAM8-22 application; Drug: A-967079 and BAM8-22 application after 5 minutes. |
| A-967079 Injections and vehicle | Experimental | Not described Receives: Drug: A-967079 application.; Drug: Vehicle and BAM8-22 application. |
What is being measured
The primary outcome is the main question the study is designed to answer.
superficial blood perfusion
is measured by a speckle contrast imager (FLPI, Moor Instruments, England)
Measured: change from baseline, up to 10 minutes after the application
Warm Detection Threshold, and Heat Pain threshold
he tests for thermal sensation will all be performed using a PATHWAY ATS (Medoc Ltd, Israel) thermal sensory testing device
Measured: change from baseline, up to 10 minutes after the application
Cold Detection Threshold and Cold Pain threshold
the tests for thermal sensation will all be performed using a PATHWAY ATS (Medoc Ltd, Israel) thermal sensory testing device
Measured: change from baseline, up to 10 minutes after the application
Pain supra-threshold heat Stimuli
the tests for thermal sensation will all be performed using a PATHWAY ATS (Medoc Ltd, Israel) thermal sensory testing device
Measured: change from baseline, up to 10 minutes after the application
Alloknesis
s measured by using a mildy pruritic, non-painful von Frey filaments of a predetermined intensity (generally 5-30 milliNewton of force)
Measured: change from baseline, up to 10 minutes after the application
mechanical pain threshold and sensitivity
is performed using a pin-prick set (Aalborg University). The set consists of 8 needles each having a diameter of 0,6 mm and different force applications
Measured: change from baseline, up to 10 minutes after the application
itch rating
the subject will rate the itch for 10 minutes by using a visual analog scale (VAS) on a tablet. this scale goes from 0 to 100. 0 indicates "no itch" and 100 indicates "worst imaginable itch"
Measured: change from baseline, up to 10 minutes after the application
Secondary outcomes (1)
pain rating
the subject will rate the pain for 10 minutes by using a visual analog scale (VAS) on a tablet. this scale goes from 0 to 100. 0 indicates "no pain" and 100 indicates "worst imaginable pain"
Measured: change from baseline, up to 10 minutes after the application
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Feb 2022
- Study start11 Feb 2022
- Primary completion30 May 2022
- Study completion30 Oct 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for ItchStudies of the same condition, open and under way.
- 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
- Basic science
- Allocation
- Randomised
- Intervention model
- Sequential
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 22 participants (actual)
Sponsor and investigators
- Lead sponsor
- Aalborg University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Giulia Erica Aliotta, Aalborg University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05249387
- Sponsor's protocol ID
- N-20190062 5th project
- Status last verified
- Sep 2023
- First submitted
- 10 Feb 2022
- Last updated
- 28 Sep 2023
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 28 Sep 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Characterization of Bovine Adrenal Medulla (BAM8-22) as a New Surrogate Model of Non-histaminergic Itch
- ClinicalTrials.gov ID
- NCT05249387
- Acronym / sponsor ID
- N-20190062 5th project
- Conditions
- Itch
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 22 participants (actual)
- Lead sponsor
- Aalborg UniversityUniversity, hospital or other
- Study start
- 11 Feb 2022 (actual)
- Primary completion
- 30 May 2022 (actual)
- Study completion
- 30 Oct 2022 (actual)
- First posted
- 21 Feb 2022 (actual)
- 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.
With this experiment, the experimenter wish evaluate the role of TRPA1 on non-histaminergic itch induced by BAM8-22
Detailed description
With this experiment, the experimenter wish evaluate the role of TRPA1 on non-histaminergic itch induced by BAM8-22 2 (Bovine Adrenal Medulla), which is found naturally in the human body and which has proved to evoke itch. To evaluate the role of TRPA1 it will be used a TRPA1 antagonist (A-967079)
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Sequential
- Masking
- Single blind (participant)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| A-967079 Injections + BAM8-22 | Experimental | Drug: A-967079 and BAM8-22 application, Drug: A-967079 and BAM8-22 application after 5 minutes. |
| A-967079 Injections and vehicle | Experimental | Drug: A-967079 application., Drug: Vehicle and BAM8-22 application. |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Healthy men and women
- 18-60 years
- Speak and understand English
Key exclusion criteria (9 listed)
- Pregnancy or lactation
- Drug addiction defined as any use of cannabis, opioids or other drugs
- Previous or current history of neurological, dermatological, immunological musculoskeletal, cardiac disorder or mental illnesses that may affect the results (e.g. neuropathy, muscular pain in the upper extremities, etc.)
- Moles, wounds, scars or tattoos in the area to be treated or tested
- Lack of ability to cooperate •
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 |
|---|---|---|
| A-967079 and BAM8-22 applicationA-967079 solution (in PBS 0.5 mg/ml, subcutaneous injection of 0.1ml) and BAM8-22 with inactivate cowhage spicules 20 µl of BAM8-22 will be applied to a previously determined area on the volar forearm using inactivate cowhage spicules | Drug | A-967079 Injections + BAM8-22 |
| A-967079 and BAM8-22 application after 5 minutes.A-967079 solution (in PBS 0.5 mg/ml, subcutaneous injection of 0.1ml). BAM8-22 with inactivate cowhage spicules 20 µl of BAM8-22 will be applied 5 minutes after to a previously determined area on the volar forearm using inactivate cowhage spicules | Drug | A-967079 Injections + BAM8-22 |
| A-967079 application.A-967079 solution (in PBS 0.5 mg/ml, subcutaneous injection of 0.1ml) will be applied to a previously determined area on the volar forearm | Drug | A-967079 Injections and vehicle |
| Vehicle and BAM8-22 application.Vehicle (in PBS, subcutaneous injection of 0.1ml) and BAM8-22 with inactivate cowhage spicules 20 µl of BAM8-22 will be applied to a previously determined area on the volar forearm using inactivate cowhage spicules | Drug | A-967079 Injections and vehicle |
Primary outcome
superficial blood perfusion
Time frame: change from baseline, up to 10 minutes after the application
is measured by a speckle contrast imager (FLPI, Moor Instruments, England)
Warm Detection Threshold, and Heat Pain threshold
Time frame: change from baseline, up to 10 minutes after the application
he tests for thermal sensation will all be performed using a PATHWAY ATS (Medoc Ltd, Israel) thermal sensory testing device
Cold Detection Threshold and Cold Pain threshold
Time frame: change from baseline, up to 10 minutes after the application
the tests for thermal sensation will all be performed using a PATHWAY ATS (Medoc Ltd, Israel) thermal sensory testing device
Pain supra-threshold heat Stimuli
Time frame: change from baseline, up to 10 minutes after the application
the tests for thermal sensation will all be performed using a PATHWAY ATS (Medoc Ltd, Israel) thermal sensory testing device
Alloknesis
Time frame: change from baseline, up to 10 minutes after the application
s measured by using a mildy pruritic, non-painful von Frey filaments of a predetermined intensity (generally 5-30 milliNewton of force)
mechanical pain threshold and sensitivity
Time frame: change from baseline, up to 10 minutes after the application
is performed using a pin-prick set (Aalborg University). The set consists of 8 needles each having a diameter of 0,6 mm and different force applications
itch rating
Time frame: change from baseline, up to 10 minutes after the application
the subject will rate the itch for 10 minutes by using a visual analog scale (VAS) on a tablet. this scale goes from 0 to 100. 0 indicates "no itch" and 100 indicates "worst imaginable itch"
1 secondary outcome
pain rating
Time frame: change from baseline, up to 10 minutes after the application
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Sep 2023.
Related trials for Itch
Recruiting
Investigation of the Effects of Sleep Deprivation on Itch and Pain Sensitivity
Histamine, Cowhage
Active, not recruiting
Identification of the Mechanism of Non-histaminergic Itch Inducing Epigenetic Changes
Itch
Recruiting
Investigate the Relationship Between Catastrophizing and the Perception of Itch Intensity in Healthy Individuals
Histamine, Cowhage
RecruitingPhase 3
Roflumilast Cream 0.3% for Moderate to Severe Atopic Dermatitis
Atopic Dermatitis, Atopic Dermatitis (AD)
Recruiting
Topographical Distribution of Itch and Pain Receptors
Pain, Itch
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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing A-967079 and BAM8-22 application, A-967079 and BAM8-22 application after 5 minutes. and A-967079 application. in people with Itch, run by Aalborg University at 1 site in Denmark.
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 3 inclusion and 9 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: finished, as of the sponsor's last update on 28 Sep 2023. 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 Denmark. 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 is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
superficial blood perfusion (time frame: change from baseline, up to 10 minutes after the application). The study lists 7 primary outcomes in all. 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 28 Sep 2023; AzTrials last refreshed its copy on 8 Nov 2026.