Article (Scientific journals)
MR-spectroscopic imaging during visual stimulation in subgroups of migraine with aura
Sandor, P. S.; Dydak, U.; Schoenen, Jean et al.
2005In Cephalalgia, 25 (7), p. 507-518
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Keywords :
lactate; metabolism; migraine; MRS; visual stimultion
Abstract :
[en] Migraine pathophysiology possibly involves deficient mitochondrial energy reserve and diminished cortical habituation. Using functional magnetic resonance spectroscopic imaging (fMRSI), we studied cortical lactate changes during prolonged visual stimulation to search for different pathophysiological mechanisms in clinically distinct subgroups of migraine with aura. Eleven healthy volunteers (HV) and 10 migraine patients were investigated interictally: five with visual aura (MA) and five with visual symptoms and at least one of the following: paraesthesia, paresis or dysphasia (MAplus). Using MRSI (Philips, 1.5 T) H-1-spectra were repeatedly obtained from a 25 mm-thick slice covering visual and non-visual cortex, with the first and fifth measurements in darkness and the second to fourth with 8-Hz checkerboard stimulation. In MAplus lactate increased only during stimulation, only in visual cortex; in MA resting lactate was high in visual cortex, without further increase during stimulation. This is compatible with an abnormal metabolic strain during stimulation in MAplus, possibly due to dishabituation, and a predominant mitochondrial dysfunction in MA.
Disciplines :
Neurology
Neurosciences & behavior
Author, co-author :
Sandor, P. S.
Dydak, U.
Schoenen, Jean  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Neuro-anatomie
Kollias, S.
Hess, K.
Boesiger, P.
Agosti, R. M.
Language :
English
Title :
MR-spectroscopic imaging during visual stimulation in subgroups of migraine with aura
Publication date :
July 2005
Journal title :
Cephalalgia
ISSN :
0333-1024
eISSN :
1468-2982
Publisher :
Blackwell Science
Volume :
25
Issue :
7
Pages :
507-518
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 25 September 2009

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