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J Headache Pain. 2016 Dec;17(1):100. Epub 2016 Oct 24.

Thalamo-cortical network activity between migraine attacks: Insights from MRI-based microstructural and functional resting-state network correlation analysis.

Author information

1
Research Unit of Neurophysiology of Vision and Neurophthalmology, G.B. Bietti Foundation-IRCCS, Via Livenza 3, 00198, Rome, Italy. gianluca.coppola@gmail.com.
2
Research Unit of Neurophysiology of Vision and Neurophthalmology, G.B. Bietti Foundation-IRCCS, Via Livenza 3, 00198, Rome, Italy.
3
Department of Neurology and Psychiatry, Neuroradiology Section, "Sapienza" University of Rome, Rome, Italy.
4
Department of Medico-Surgical Sciences and Biotechnologies, Neurology Section, "Sapienza" University of Rome, Rome, Italy.
5
Don Carlo Gnocchi Onlus Foundation, Milan, Italy.
6
Laboratory of Psychophysiology, Psychiatric Clinic, Department of Systems Medicine, University of Rome "Tor Vergata", Rome, Italy.
7
Department of Medico-Surgical Sciences and Biotechnologies, "Sapienza" University of Rome Polo Pontino, Latina, Italy.
8
IRCCS Neuromed, Pozzilli, (IS), Italy.
9
Headache Research Unit, Department of Neurology-CHR Citadelle, University of Liège, Liège, Belgium.

Abstract

BACKGROUND:

Resting state magnetic resonance imaging allows studying functionally interconnected brain networks. Here we were aimed to verify functional connectivity between brain networks at rest and its relationship with thalamic microstructure in migraine without aura (MO) patients between attacks.

METHODS:

Eighteen patients with untreated MO underwent 3 T MRI scans and were compared to a group of 19 healthy volunteers (HV). We used MRI to collect resting state data among two selected resting state networks, identified using group independent component (IC) analysis. Fractional anisotropy (FA) and mean diffusivity (MD) values of bilateral thalami were retrieved from a previous diffusion tensor imaging study on the same subjects and correlated with resting state ICs Z-scores.

RESULTS:

In comparison to HV, in MO we found significant reduced functional connectivity between the default mode network and the visuo-spatial system. Both HV and migraine patients selected ICs Z-scores correlated negatively with FA values of the thalamus bilaterally.

CONCLUSIONS:

The present results are the first evidence supporting the hypothesis that an abnormal resting within networks connectivity associated with significant differences in baseline thalamic microstructure could contribute to interictal migraine pathophysiology.

KEYWORDS:

Fractional anisotropy; Magnetic resonance imaging; Migraine; Resting state; Thalamus

PMID:
27778244
PMCID:
PMC5078119
DOI:
10.1186/s10194-016-0693-y
[Indexed for MEDLINE]
Free PMC Article

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