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Apolipoprotein E gene polymorphisms in patients with migraine.
Innocenzo Rainero1, Luigi M E Grimaldi, Giuliana Salani
1Neurology III--Headache Center, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126 Turin, Italy. irainero@molinette.piemonte.it
Neuroscience Letters
|January 5, 2002
Summary
Apolipoprotein E (APOE) gene variations were studied in migraine patients. While no overall link was found, the APOE varepsilon2-varepsilon4 genotype was more common in patients with mixed headaches, suggesting a potential connection needing more research.
Area of Science:
- Genetics
- Neurology
- Epidemiology
Background:
- Migraine is a common neurological disorder with complex genetic underpinnings.
- Apolipoprotein E (APOE) gene polymorphisms have been implicated in various neurological conditions, including Alzheimer's disease.
- The role of APOE in migraine susceptibility and clinical presentation remains unclear.
Purpose of the Study:
- To investigate the association between apolipoprotein E (APOE) gene polymorphisms and migraine.
- To explore potential links between APOE genotypes and specific migraine subtypes.
Main Methods:
- Genotyping of APOE alleles was performed on 241 migraine patients and 587 healthy controls.
- Chi-square analysis was used to compare allele distributions between groups.
- Subgroup analysis was conducted for migraine with aura, migraine without aura, and mixed headaches.
Main Results:
- Overall APOE allele distribution did not significantly differ between migraine patients and controls (P=0.24).
- A significant increase in the APOE varepsilon2-varepsilon4 genotype was observed in migraine patients (P<0.001).
- This specific genotype (APOE varepsilon2-varepsilon4) was significantly elevated only in the subgroup of patients with mixed headaches.
Conclusions:
- No significant overall association was found between APOE polymorphisms and migraine.
- The APOE varepsilon2-varepsilon4 genotype shows a potential association with mixed headaches, warranting further investigation.
- APOE status did not correlate with other clinical features of migraine in this study population.