Neurite Damage in Patients with Migraine

Area of Science:

• Neuroimaging
• Neurology
• Migraine Pathophysiology

Background:

• Migraine is a complex neurological disorder with potential underlying structural brain changes.
• Neurite orientation dispersion and density imaging (NODDI) is a diffusion MRI technique sensitive to microstructural tissue properties.

Purpose of the Study:

• To investigate microstructural alterations in the brain using NODDI in patients with migraine.
• To explore the relationship between neurite dispersion and clinical features of migraine, such as attack frequency and medication overuse.

Main Methods:

• Utilized neurite orientation dispersion and density imaging (NODDI) to assess brain microstructure.
• Compared NODDI metrics between patients with migraine and healthy controls.
• Analyzed correlations between NODDI measures and migraine characteristics, including attack frequency and medication overuse.

Main Results:

• Patients with migraine, particularly those with medication overuse headache, demonstrated significantly lower orientation dispersion compared to controls.
• A negative correlation was observed between orientation dispersion in the corpus callosum and the frequency of migraine attacks.
• These findings suggest a specific pattern of neurite damage in chronic migraine.

Conclusions:

• Neurite dispersion is compromised in patients suffering from chronic migraine.
• The observed microstructural changes, specifically reduced neurite dispersion in the corpus callosum, are associated with migraine severity and chronicity.
• This study highlights the potential of NODDI in revealing the neuroanatomical underpinnings of migraine and identifying the orientation preference of neurite damage.