Cerebral autoregulation in migraine with aura: A case control study

Area of Science:

• Neurology
• Vascular Physiology

Background:

• Migraine with aura is linked to a higher risk of ischemic stroke, particularly in younger individuals.
• This association may stem from impaired cerebral autoregulation, the process maintaining stable cerebral blood flow despite blood pressure changes.

Purpose of the Study:

• To investigate cerebral autoregulation in patients with migraine with aura.
• To compare cerebral autoregulation between migraine with aura patients and healthy controls.
• To explore the relationship between cerebral autoregulation and disease duration or age in migraine with aura.

Main Methods:

• Prospective enrollment of 22 patients (30-55 years) with migraine with aura and 22 age/gender-matched healthy controls.
• Exclusion of individuals with a history of stroke or conditions affecting cerebral autoregulation.
• Assessment of cerebral autoregulation using Transfer Function Analysis and the Mx correlation coefficient index.

Main Results:

• No significant differences in Transfer Function parameters or Mx were found between migraine with aura patients and controls.
• A significant inverse correlation was observed between Mx and age in patients with migraine with aura (ρ = -0.567, p = 0.006).
• Mx was also inversely correlated with the duration of migraine with aura (ρ = -0.617, p = 0.002), suggesting improved autoregulation efficiency over time.

Conclusions:

• Cerebral autoregulation did not differ between migraine with aura patients and controls in the 30-55 age group.
• Cerebral autoregulation efficiency demonstrated a strong positive correlation with the duration of migraine with aura.
• Further research in younger populations is necessary to ascertain if cerebral autoregulation is compromised early in the disease progression.