Levcromakalim, Pain
Conditions
Brief summary
Intradermal and intramuscular injection of levcromacalim and placebo (sterile saline) on the forehead and forearm of healthy subjects and the following will be investigated: 1. Prevalence and intensity of pain 2. Prevalence and intensity of itching 3. Occurrence and intensity of local redness and swelling 4. Occurrence and intensity of local changes in skin temperature and blood flow
Interventions
DRUGLevcromakalim
To investigate the role of levcromakalim compared with placebo after intradermal and intramuscular injection.
DRUGSaline
To investigate the role of levcromakalim compared with placebo after intradermal and intramuscular injection.
Sponsors
Danish Headache Center
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Intervention model description
Parallel, randomized placebo controlled and crossover study
Eligibility
Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes
Inclusion criteria
1. Healthy volunteers of both sexes. 2. 18-60 years. 3. 50-100 kg. 4. Women of childbearing potential must use adequate contraception.
Exclusion criteria
1. A history of serious somatic disease 2. Migraine or any other type of headache (except episodic tension-type headache less than once a month) 3. Daily intake of any medication except contraceptives
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Occurrence and change of pain from baseline | Before and after injection of levcromakalim compared with before and after injection of saline. Time of measurements is baseline, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 35 min, 40 min and 45 min after the injection | Occurrence and intensity of pain after levcromakalim injektion compared to placebo. To measure pain numerical rating scale (NRS) 0-10 will be used. The outcome measure is pain and the unit that will be used to measure the pain is NRS. |
| Occurrence and change of Itching from baseline | Before and after injection of levcromakalim compared with before and after injection of saline. Time of measurements is baseline, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 35 min, 40 min and 45 min after the injection | Occurrence and intensity of Itching after levcromakalim injektion compared to placebo. To measure itching numerical rating scale (NRS) 0-10 will be used. The outcome measure is itching and the unit that will be used to measure the itching is NRS. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Occurrence and change of redness from baseline | Before and after injection of levcromakalim compared with before and after injection of saline. Time of measurements is baseline, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 35 min, 40 min and 45 min after the injection. | Occurrence and change of redness after levcromakalim injektion compared to placebo. The areal of the redness will be measured. The outcome measure is redness and the unit that will be used to measure the redness is areal cm\^2. |
| Occurrence and change of swelling from baseline | Before and after injection of levcromakalim compared with before and after injection of saline. Time of measurements is baseline, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 35 min, 40 min and 45 min after the injection. | Occurrence and change of swelling after levcromakalim injektion compared to placebo. The areal of the swelling will be measured. The outcome measure is swelling and the unit that will be used to measure the swelling is areal cm\^2. |
| Change of blood flow from baseline | Before and after injection of levcromakalim compared with before and after injection of saline. Time of measurements is baseline, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 35 min, 40 min and 45 min after the injection. | Change of blodflow after levcromakalim injektion compared to placebo. The intensity of the blodd flow will be measured by laser speckle The outcome measure is change of blood flow and the laser speckle will be used to measure the blood flow. |
| Change of skin temperature from baseline | Before and after injection of levcromakalim compared with before and after injection of saline. Time of measurements is baseline, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 35 min, 40 min and 45 min after the injection. | Change of skin temperature after levcromakalim injektion compared to placebo. The temperature will be measured by thermovision camera. The outcome measure is the change of skin temperature and the thermovision camera will be used to measure skin temperature. |
Countries
Denmark
Outcome results
None listed