Journal
DISEASE MARKERS
Volume 25, Issue 2, Pages 107-113Publisher
HINDAWI LTD
DOI: 10.1155/2008/178679
Keywords
Migraine with aura; association study; folate metabolism; homocysteine; cephalalgia
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Funding
- Fundacao para a Ciencia e Tecnologia [POCTI-034390/99/FCT, SFRH/ BD/ 1288/2000, POCTI-034390-PR332009-BTI, SFRH/BD/9111/2002, SFRH/BD/17761/2004]
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Migraine is a debilitating disorder affecting a large proportion of the population. The effect of methylenetrathydrofolate reductase (GeneID: 4524) polymorphisms in migraine etiology and development has been a theme of great interest. Several populations were evaluated with contradictory results. In this case-control study, we investigated the effect of the C677T polymorphism in MTHFR, as a genetic risk factor for migraine, in the Portuguese population. We observed that, overall, there was no significant difference in the frequencies of MTHFR C677T genotypes or of the T-allele among the Portuguese migraineurs when compared to controls. There was also no association of migraine with aura with MTHFR genotypes or with the T-allele, in contrast with previous studies. Regarding the risk of the T-allele homozygote carriers, there was an equal probability to develop migraine with aura over migraine without aura in our patients. Thus, we conclude that the C677T MTHFR polymorphism, responsible for a reduction of the MTHFR activity in folate metabolism, is not a major genetic susceptibility factor for migraine in the Portuguese population.
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