To investigate the glutaminergic system in the onset of migraine-like attacks.
Glyceryl trinitrate infusion (GTN) is used to provoke migraine-like attacks in female migraine without aura patients. Apart from migraine without aura patients healthy female controls are also included as a control group. Over the course of a single day these females (migraineurs and healthy controls) were scanned three times on fixed time slots: before GTN infusion (baseline), 90 minutes and 270 minutes after start of GTN infusion. Scans are acquired on a 7 tesla scanner (Philips, Cleveland, USA) on software release 3 using a 32 channel receive array using single-volume proton magnetic resonance spectroscopy (1H MRS) with a volume of interest in the visual cortex glutamate, in which glutamate, GABA and other metabolites will be assessed. The primary endpoint; glutamate level changes towards the pre-ictal and ictal state with other metabolite (e.g. glutamine and GABA) changes as secondary endpoints.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
39
Glutamate
Changes in glutamate level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
Glutamine
Changes in glutamine level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
GABA
Changes in GABA level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
N-acetylaspartate
Changes in N-acetylaspartate level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
Phosphoethanolamine
Changes in phosphoethanolamine level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
Myo-inositol
Changes in myo-inositol level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
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Glutathione
Changes in glutathione level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
Aspartate
Changes in aspartate level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
Creatine
Changes in creatine level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state
Choline
Changes in choline level
Time frame: From baseline towards the pre-ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) and ictal (assessed at 90 and/or 270 minutes after GTN depending on clinical condition) state