1. Functional variants of MIF, INFG and TFNA genes are not associated with disease susceptibility or hearing loss progression in patients with Ménière's disease.
- Author
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Gázquez I, Moreno A, Requena T, Ohmen J, Santos-Perez S, Aran I, Soto-Varela A, Pérez-Garrigues H, López-Nevot A, Batuecas A, Friedman RA, López-Nevot MA, and López-Escamez JA
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Alleles, Cohort Studies, Cross-Cultural Comparison, Disease Progression, Female, Genetic Association Studies, Humans, Male, Middle Aged, Polymorphism, Single Nucleotide genetics, Spain, United States, Young Adult, Genetic Predisposition to Disease genetics, Hearing Loss, Sensorineural genetics, Interferon-gamma genetics, Intramolecular Oxidoreductases genetics, Macrophage Migration-Inhibitory Factors genetics, Meniere Disease genetics, Peptide Fragments genetics, Tumor Necrosis Factor-alpha genetics
- Abstract
Variability in acute immune response genes could determine susceptibility or prognosis for Ménière's disease (MD). The cytokines tumor necrosis factor α (TNFα), macrophage migration inhibitory factor (MIF) and interferon γ (INFγ) are proinflammatory cytokines of the innate immune response. These cytokines mediate inflammation and have been previously associated with the inflammatory process in several autoimmune diseases. We investigated the association between functional allelic variants of MIF (rs35688089), IFNG (rs2234688) and TNFA (rs1800629) in patients with MD. In addition to testing these variants for an association with disease, we also tested for an association with clinical aspects of disease progression, such as persistence of vertigo and the sensorineural hearing loss. A total of 580 patients with diagnosis of definite MD, according to the diagnostic scale of the American Academy of Otolaryngology-Head and Neck Surgery, and 552 healthy controls were included. DNA samples from a set of 291 American patients were used to confirm the results obtained in the MIF gene in our Spanish cohort. Although we found a significant association with the allele containing five repeats of CATT within the MIF gene in patients with MD in the Spanish cohort [corrected p = 0.008, OR = 0.69 (95 % CI, 0.54-0.88)], this finding could not be replicated in the American set. Moreover, no genetic associations for variants in either the TNFA or IFNG genes and MD were found. These results support the conclusion that functional variants of MIF, INFG, and TFNA genes are not associated with disease susceptibility or hearing loss progression in patients with MD.
- Published
- 2013
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