This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

The Effect of Glyceryl Trinitate and Diamox on Cerebral Haemodynamics.

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified July 2006 by Danish Headache Center.
Recruitment status was:  Not yet recruiting
Information provided by:
Danish Headache Center Identifier:
First received: August 14, 2006
Last updated: NA
Last verified: July 2006
History: No changes posted
After infusion / injection of Glyceryl trinitrate and Diamox it is wished to study the effect of drugs on the cerebral haemodynamics such as Cerebral blod flow and cerebral blod volume.

Condition Intervention
Migraine Drug: GTN, Diamox

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double
Primary Purpose: Educational/Counseling/Training
Official Title: The Effect of Glyceryl Trinitrate (GTN) and Diamox on Cerebral Haemodynamics Judged With the Help of 3-Tesla MRI.

Resource links provided by NLM:

Further study details as provided by Danish Headache Center:

Estimated Enrollment: 12
Study Start Date: August 2006
Estimated Study Completion Date: May 2007
Detailed Description:

Experimental headache model open a unike opportunity to study the pathophysiological mechanisms behind headache in general and migrane in particular. Previous studies have used various techniques to study the cerebral haemodynamics as a basis for the headache pathophysiology. We wish to use a 3-Tesa MRI so study the cerebral haemodynamics after application of various pharmacological substances.

The most used experimental headache model is the glyceryl trinitrate model (GTN). Where infusion of the NO donor GTN induces headache and changes in the cerebral arteries. On the other hand injection of Diamox (Acetazolamide) apparently causes increase of the cerebral blod flow with out dilation of the arteries. We wish to study the precise effect of GTN and diamox on the cerebral haemodynamics such as Cerebral blod flow (CBF) and Cerebral blod volume (CBV) via a 3-Tesla MRI.


Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • healthy volunteers; men and women age 18-50 years.
  • weight 50-100 kg

Exclusion Criteria:

  • Tension type headache more then once per month during the last year.
  • Other primary headache types.
  • Daily use of medication.
  • Pregnant or lactating women.
  • Headache on the trail day or 24 hours prior to the trial.
  • Contraindications to MRI.
  • Hypotension og hypertension.
  • Other significant medical conditions judged by the doctor in charge.
  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: NCT00363571

Contact: Mohammad Sohail Asghar, MD +4543232161

Danish Headache Center, Neurological Dep. Glostrup hospital
Glostrup, Denmark, 2770
Sponsors and Collaborators
Danish Headache Center
Study Chair: Messoud Ashina, MD,Ph.D Danish Headache Center
  More Information Identifier: NCT00363571     History of Changes
Other Study ID Numbers: KA-20060084
Study First Received: August 14, 2006
Last Updated: August 14, 2006

Additional relevant MeSH terms:
Carbonic Anhydrase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Natriuretic Agents
Physiological Effects of Drugs processed this record on August 23, 2017