title: Association analysis of 5-HTTLPR variants, 5-HT2a receptor gene 102T/C polymorphism and migraine.
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/C polymorphism of the 5-HT2A receptor 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 (chi2 = 3.84, df = 1, p = 0.049; OR = 1.45, 95% CI = 1.00-2.12) between 5-HTTLPR short (S) allele and migraine was found. No significant difference between migraine sufferers and controls was observed for the 102T/C polymorphism of 5-HT2A receptor gene. Furthermore, there was no significant interaction between5-HTTLPR and 102T/C polymorphisms 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.
authors.affiliation: Laboratory of Neurochemistry and Experimental Medicine, and Department of Vascular Neurology, Faculty of Medicine, Semmelweis University, National Institute of Psychiatry and Neurology, Budapest, Hungary.
authors.forename: Gabriella
authors.initials: G
authors.lastname: Juhasz
authors.forename: Terezia
authors.initials: T
authors.lastname: Zsombok
authors.forename: Andras
authors.initials: A
authors.lastname: Laszik
authors.forename: Xenia
authors.initials: X
authors.lastname: Gonda
authors.forename: Peter
authors.initials: P
authors.lastname: Sotonyi
authors.forename: Gabor
authors.initials: G
authors.lastname: Faludi
authors.forename: Gyorgy
authors.initials: G
authors.lastname: Bagdy
mesh_terms: D000328:Adult; D002352:Carrier Proteins / Q000235:genetics*; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D005260:Female; D020022:Genetic Predisposition to Disease; D006801:Humans; D016015:Logistic Models; D008562:Membrane Glycoproteins / Q000235:genetics*; D026901:Membrane Transport Proteins; D008881:Migraine Disorders / Q000235:genetics*; D020325:Migraine with Aura / Q000235:genetics; D020326:Migraine without Aura / Q000235:genetics; D009419:Nerve Tissue Proteins; D016133:Polymerase Chain Reaction / Q000379:methods; D011110:Polymorphism, Genetic; D044402:Receptor, Serotonin, 5-HT2A / Q000235:genetics*; D038621:Regulatory Sequences, Ribonucleic Acid; D050486:Serotonin Plasma Membrane Transport Proteins
chemical_list: D002352:Carrier Proteins; D008562:Membrane Glycoproteins; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D044402:Receptor, Serotonin, 5-HT2A; D038621:Regulatory Sequences, Ribonucleic Acid; C493230:SLC6A4 protein, human; D050486:Serotonin Plasma Membrane Transport Proteins