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Carbon Monoxide Migraine-inducing Effects in Patients With Migraine Without Aura.

This study is currently recruiting participants.
See Contacts and Locations
Verified March 2017 by Hashmat Ghanizada, Danish Headache Center
Information provided by (Responsible Party):
Hashmat Ghanizada, Danish Headache Center Identifier:
First received: March 6, 2017
Last updated: March 10, 2017
Last verified: March 2017
To investigate headache score and accompanying symptoms during and after inhalation of carbon monoxide.

Condition Intervention
Headache, Migraine Other: Carbon monoxide Other: AIR

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Official Title: Basic Research on Carbon Monoxide's Headache Inducing Characteristics in a Humane Experimental Headache Model

Resource links provided by NLM:

Further study details as provided by Hashmat Ghanizada, Danish Headache Center:

Primary Outcome Measures:
  • Headache scores, 12 hours [ Time Frame: 12 hours ]
    Comparison between carbon monoxide and placebo (atmospheric air)

Secondary Outcome Measures:
  • Facial blood flow [ Time Frame: [ Time Frame: 0-180 min ] ]
    Carbon monoxide induced changes in facial blood flow before and after inhalation.

Estimated Enrollment: 12
Actual Study Start Date: October 2016
Estimated Study Completion Date: March 1, 2018
Estimated Primary Completion Date: December 31, 2017 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Active carbon monoxide
Inhalation of carbon monoxide up to a carboxyhemoglobin concentration 22%
Other: Carbon monoxide
carbon monoxide, 4.7, Purity 99.997, inhalation of carbon monoxide in a volume corresponding to carboxyhemoglobin 10 and 20%, calculated from baseline Hg and body mass
Placebo Comparator: Air Other: AIR
Room air will be administered as placebo

Detailed Description:

To investigate headache score and accompanying symptoms during and after inhalation of carbon monoxide.

With transcranial Doppler imaging, c-scan and laser speckle the investigators will investigate changes in blood flow velocity of the middle cerebral artery (MCA), diameter of the superficial temporal artery (STA), the radial artery and facial skin perfusion.


Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Healthy volunteers
  • Aged 18-50
  • 50-100 kg

Exclusion Criteria:

  • Tension type headache more than once/month
  • Other primary headaches
  • Daily medication except contraceptives
  • Drug taken within 4 times the halflife for the specific drug except contraceptives
  • Pregnant or lactating women
  • Exposure to radiation within the last year
  • Headache within the last 24 hours before start of trial
  • Hypertension
  • Hypotension
  • Respiratory or cardiac disease
  • Smoking
  • Primary relatives with current or previous migraine
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT03075020

Contact: Hashmat Ghanizada, MD 0045-38633470

Danish Headache Center Recruiting
Glostrup, Denmark, 2600
Contact: Hashmat Ghanizada, MD    38633470   
Sponsors and Collaborators
Danish Headache Center
  More Information

Responsible Party: Hashmat Ghanizada, MD, Danish Headache Center Identifier: NCT03075020     History of Changes
Other Study ID Numbers: H-16021497
Study First Received: March 6, 2017
Last Updated: March 10, 2017
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

Additional relevant MeSH terms:
Migraine Disorders
Migraine without Aura
Headache Disorders, Primary
Headache Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Neurologic Manifestations
Signs and Symptoms
Carbon Monoxide
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Physiological Effects of Drugs processed this record on September 19, 2017