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Published on: June 2, 2014
Dopamine receptor 3 (DRD3) polymorphism and risk for migraine
E García-Martín1, C Martínez2, M Serrador3
1Biochemistry & Molecular Biology, School of Biological Sciences, University of Extremadura, Badajoz, Spain.
The dopamine D3 receptor (DRD3) gene polymorphism rs6280 is not associated with migraine risk in Caucasian Spanish individuals. However, the DRD3Gly9Gly9 genotype was more frequent in migraine with aura patients compared to those without aura.
Area of Science:
- Neuroscience
- Genetics
- Pharmacology
Background:
- Dopamine plays a role in migraine pathogenesis.
- The DRD3 gene (rs6280) polymorphism on chromosome 3q13 is a potential factor in migraine susceptibility.
Purpose of the Study:
- To investigate the association between the DRD3 gene polymorphism (rs6280) and migraine risk.
- To explore the link between this polymorphism and alcohol-triggered migraine attacks.
Main Methods:
- Genotyping of DRD3 (rs6280) in 197 migraine patients and 282 controls using PCR and RFLP.
- Analysis of genotype and allele frequencies in relation to migraine status, aura, and alcohol triggers.
Main Results:
- No significant difference in DRD3 genotype or allele frequencies between migraine patients and controls.
- DRD3 genotype and allele frequencies were not linked to migraine onset age, gender, family history, or alcohol triggers.
- The DRD3Gly9Gly9 genotype was more prevalent in migraine with aura patients versus migraine without aura patients, but not compared to controls.
Conclusions:
- DRD3 genotype and allelic variants are not associated with overall migraine risk in the studied Caucasian Spanish population.
- The DRD3Gly9Gly9 genotype may be associated with migraine with aura, warranting further investigation.
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