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Updated: Jul 1, 2026

Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
Published on: November 8, 2012
Association between white matter microstructural and functional abnormalities and clinical characteristics in
Qixuan Fu1, Chaorong Xie1, Yangxu Ou1
1School of Acupuncture Moxibustion and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.
Background:
Migraine without aura (MWoA) is a neurological disorder associated with structural and functional abnormalities in white matter (WM). However, interactions between clinical characteristics and WM abnormalities of microstructure and function in MWoA have remained underexplored. In this study, we aimed to investigate these associations and broaden the understanding of the pathophysiology of MWoA.
Methods:
A total of 51 MWoA patients and 51 healthy controls (HCs) underwent magnetic resonance imaging (MRI). Microstructural WM abnormalities were assessed using tract-based spatial statistics (TBSS). Functional alterations were evaluated by measuring the amplitude of low-frequency fluctuation (ALFF) and degree centrality (DC). Spearman's rank correlation was used to assess the association between these abnormalities and clinical characteristics such as frequency, intensity, and disease progression of MWoA. We also conducted a region-level functional connectivity analysis, followed by mediation analysis to explore potential pathways linking WM abnormalities to clinical characteristics.
Results:
This study showed that, compared to HCs, MWoA patients showed decreased fractional anisotropy (FA), axial dispersion (AD), and DC and increased ALFF in the left frontopontine (FPT_L), decreased FA and AD in the forceps major (CC_ForcepsMajor), and decreased ALFF in the forceps minor (CC_ForcepsMinor). Among them, ALFF in the CC_ForcepsMinor and DC, FA, and AD in the FPT_L were inversely correlated with disease duration (p < 0.05). FA and AD in the CC_ForcepsMajor were inversely correlated with visual analog scale (VAS) scores (p < 0.05). Exploratory mediation analysis suggested that functional and microstructural abnormalities in the corpus callosum (CC) subregions may mediate the relationship between the DC value in the FPT-L and disease duration among MWoA patients.
Conclusion:
This study reveals concomitant alterations in the function and microstructure of WM in the CC subregions and the FPT_L among MWoA patients. These alterations are significantly correlated with clinical characteristics and suggest that these abnormalities in functional fluctuations and WM integrity may serve as mediators between reduced network integration and disease duration in MWoA. These findings support the WM abnormality hypothesis and deepen our understanding of the pathophysiological mechanisms underlying MWoA.
Insights
Migraine without aura (MWoA) patients show altered white matter (WM) microstructure and function, particularly in the corpus callosum and left frontopontine regions. These changes correlate with disease duration and intensity, offering insights into MWoA pathophysiology.
Area of Science:
- Neuroscience
- Radiology
- Neurology
Background:
- Migraine without aura (MWoA) is linked to white matter (WM) abnormalities.
- The interplay between clinical features and WM microstructure/function in MWoA requires further investigation.
Purpose of the Study:
- To investigate associations between clinical characteristics and WM microstructural/functional abnormalities in MWoA.
- To enhance understanding of MWoA pathophysiology.
Main Methods:
- 51 MWoA patients and 51 healthy controls (HCs) underwent MRI.
- Tract-based spatial statistics (TBSS) assessed WM microstructure.
- Amplitude of low-frequency fluctuation (ALFF) and degree centrality (DC) evaluated functional alterations.
- Spearman's rank correlation analyzed associations with clinical data.
Main Results:
- MWoA patients exhibited reduced fractional anisotropy (FA), axial dispersion (AD), and DC, alongside increased ALFF in the left frontopontine (FPT_L).
- Reduced FA and AD were observed in the forceps major (CC_ForcepsMajor), and decreased ALFF in the forceps minor (CC_ForcepsMinor).
- WM abnormalities in FPT_L and CC_ForcepsMajor correlated with disease duration and visual analog scale (VAS) scores, respectively.
Conclusions:
- Concomitant WM function and microstructure alterations exist in CC subregions and FPT_L in MWoA patients.
- These abnormalities correlate significantly with clinical characteristics.
- WM integrity and functional fluctuations may mediate the link between network integration and disease duration in MWoA.
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