Abstract
It is well known that migraine has a strong genetic component, although the type and number of genes involved is not yet clear. There is evidence to suggest that serotonin-related genes participate in the pathogenesis of migraine. Previous studies have shown that gender differences influence the serotonergic neurotransmission and, in addition, the migraine prevalence is higher in females than males. Therefore, we investigated the functional polymorphism in the upstream regulatory region of the serotonin transporter gene (5-HTTLPR) and the 102T/Cpolymorphism of the 5-HT2Areceptor gene in the Hungarian female population. These genes were analysed in 126 migraine sufferers (with or without aura)and 101 unrelated healthy controls using case control design. A borderline association (χ2=3.84, df=1, p=0.049; OR=1.45, 95% CI=1.00–2.12) between 5-HTTLPRshort (S) allele and migraine was found. No significant difference between migraine sufferers and controls was observed for the 102T/Cpolymorphism of 5-HT2Areceptor gene. Furthermore, there was no significant interaction between5-HTTLPRand 102T/Cpolymorphisms in our study population. In conclusion, our results support that the genetic susceptibility of migraine may be associated with a locus at or near the 5-HT transporter gene.
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