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06:01
A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
Published on: August 18, 2015
The migraine-ischemic stroke connection: potential pathogenic mechanisms.
Alessandro Pezzini1, Elisabetta Del Zotto, Alessia Giossi
1Dipartimento di Scienze Mediche e Chirurgiche, Clinica Neurologica, Universită degli Studi di Brescia, Brescia, Italia. ale_pezzini@hotmail.com
Current Molecular Medicine
|March 12, 2009
Summary
Migraine, particularly with aura, is linked to a higher risk of ischemic stroke. Research is exploring the complex mechanisms, including vascular changes and genetic factors, to understand this connection.
Area of Science:
- Neurology
- Vascular Medicine
- Genetics
Background:
- Epidemiological studies show a strong association between migraine, especially migraine with aura, and an increased risk of ischemic stroke.
- The exact biological mechanisms underlying the migraine-stroke link remain incompletely understood and are a subject of ongoing research and speculation.
Purpose of the Study:
- To elucidate the complex mechanisms potentially linking migraine and ischemic stroke.
- To explore how migraine might directly cause ischemic events or predispose individuals to stroke outside of migraine attacks.
- To investigate potential shared genetic pathways and the role of specific syndromes in the migraine-stroke relationship.
Main Methods:
- Review of epidemiological evidence and proposed pathophysiological mechanisms.
- Discussion of direct migraine-induced ischemic events (e.g., migrainous infarct) via vasoconstriction and hypercoagulability.
- Exploration of indirect links through endothelial dysfunction, interaction with vascular risk factors, genetic predispositions, and specific syndromes like CADASIL.
Main Results:
- Migraine may directly cause ischemic events through mechanisms like cortical spreading depression-related oligemia, cerebral artery spasm, and endothelial hypercoagulability.
- Migraine can also increase stroke risk independently of attacks by affecting endothelial function or interacting with conditions like patent foramen ovale.
- Genetic factors and shared pathogenic mechanisms, as suggested by syndromes like CADASIL, may link migraine and ischemic stroke.
Conclusions:
- The relationship between migraine and ischemic stroke is multifactorial, involving direct vascular effects, endothelial dysfunction, genetic predispositions, and potentially medication side effects.
- Identifying high-risk migraineurs and developing preventive strategies are crucial goals for future research.
- Further investigation is needed to fully unravel the complex interplay between migraine and cerebrovascular events.
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