PMID- 23023380 OWN - NLM STAT- MEDLINE DCOM- 20140722 LR - 20121001 IS - 1735-367X (Electronic) IS - 1735-1383 (Linking) VI - 9 IP - 3 DP - 2012 Sep TI - Toll like receptor-4 896A/G gene variation, a risk factor for migraine headaches. PG - 159-67 AB - BACKGROUND: The pathogenesis of migraine involves immune-mediated mechanisms in the vascular endothelium. Toll like receptor 4 (TLR-4) is a signaling receptor of innate immunity which plays a role in various neuropathologies related to neuron inflammation. OBJECTIVE: This case/control study is aimed to investigate whether TLR-4 896A/G variation is related to migraine headaches in an Iranian population. METHODS: A total of 170 migraine patients (130 females, mean age 33.24 +/- 11 years) and 170 age, sex, and ethnicity matched healthy controls (118 females, mean age of 31 +/- 10 years) were recruited. Genotyping was carried out using the tetra primer amplification refractory mutation system (ARMS)-PCR. RESULTS: The frequency of G allele was higher in migraine patients than the controls (15% vs. 4.7%; p<0.0001). Interestingly, the distribution of heterozygous 896A/G genotype statistically differed between migraineurs and controls (25.3% vs. 8.2%, p=0.00002, OR 3.87, 95% CI; 2.02-7.4). Multivariate logistic regression analysis indicated that G allele in affected female migraineurs is an independent factor associated with increased risk of migraine (OR 3.2, 95% CI 1.23-8.24, p=0.01). CONCLUSION: Our results showed TLR-4 polymorphism as a genetic risk factor for migraine. However, further studies in different populations are required to elucidate the precise role of TLR-4 896A/G mutation in susceptibility to migraine. FAU - Rafiei, Alireza AU - Rafiei A AD - Neurology Ward, Department of Internal Medicine, Buali Hospital, Sari, Iran, e-mail: abedinm20@gmail.com. FAU - Abedini, Mahmoud AU - Abedini M FAU - Hosseini, Seyed Hamzeh AU - Hosseini SH FAU - Hosseini-Khah, Zahra AU - Hosseini-Khah Z FAU - Bazrafshan, Behrouz AU - Bazrafshan B FAU - Tehrani, Mohsen AU - Tehrani M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Iran TA - Iran J Immunol JT - Iranian journal of immunology : IJI JID - 101282932 RN - 0 (Inflammation Mediators) RN - 0 (Toll-Like Receptor 4) SB - IM MH - Adult MH - Female MH - Gene Frequency MH - Gene-Environment Interaction MH - Genetic Association Studies MH - *Genetic Predisposition to Disease MH - Humans MH - Immunity, Innate MH - Inflammation Mediators/metabolism MH - Iran MH - Male MH - Migraine Disorders/*genetics/immunology MH - Neurogenic Inflammation/genetics MH - Polymorphism, Single Nucleotide MH - Risk Factors MH - Sex Factors MH - Toll-Like Receptor 4/*genetics MH - Trigeminal Nerve/*immunology MH - Young Adult EDAT- 2012/10/02 06:00 MHDA- 2014/07/23 06:00 CRDT- 2012/10/02 06:00 PHST- 2012/10/02 06:00 [entrez] PHST- 2012/10/02 06:00 [pubmed] PHST- 2014/07/23 06:00 [medline] AID - 02 [pii] PST - ppublish SO - Iran J Immunol. 2012 Sep;9(3):159-67.