Abstract:
OBJECTIVE:The aim of this study was to examine chronic brain white matter hyperintensities in migraine and to gain data on the characteristics of the lesions. BACKGROUND:Migraine associates with a higher incidence of magnetic resonance imaging (MRI)-visible white matter signal abnormalities. Several attack-related pathomechanisms have been proposed in the lesion development, including the effect of repeated intracerebral hemodynamic changes. METHODS:Supratentorial white matter hyperintensities of 17 migraine patients were investigated interictally with quantitative MRI, including quantitative single voxel spectroscopy, diffusion, and perfusion MRI at 3.0-Tesla. The findings were compared with data measured in the contralateral, normal-appearing white matter of migraineurs and in the white matter of 17 healthy subjects. RESULTS:Significantly higher apparent diffusion coefficient values, prolonged T2 relaxation times, and decreased N-acetyl-aspartate and creatine/phosphocreatine concentrations were found in the white matter hyperintensities. The cerebral blood flow and blood volume values were mildly decreased inside the hyperintensities. Differences were not present between the migraine patients' normal-appearing white matter and the white matter of healthy subjects. CONCLUSIONS:The MRI measurements denote tissue damage with axonal loss, low glial cell density, and an enlarged extracellular space with an increased extracellular water fraction. These radiological features might be the consequences of microvascular ischemic changes during migraine attacks.
journal_name
Headachejournal_title
Headacheauthors
Aradi M,Schwarcz A,Perlaki G,Orsi G,Kovács N,Trauninger A,Kamson DO,Erdélyi-Bótor S,Nagy F,Nagy SA,Dóczi T,Komoly S,Pfund Zdoi
10.1111/head.12013subject
Has Abstractpub_date
2013-05-01 00:00:00pages
752-63issue
5eissn
0017-8748issn
1526-4610journal_volume
53pub_type
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