1. Interleukin-18, interleukin-12B and interferon-γ gene polymorphisms in Brazilian patients with rheumatoid arthritis: a pilot study.
- Author
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Angelo HD, Gomes Silva II, Oliveira RD, Louzada-Júnior P, Donadi EA, Crovella S, Maia MM, de Souza PR, and Sandrin-Garcia P
- Subjects
- Adult, Alleles, Arthritis, Rheumatoid immunology, Arthritis, Rheumatoid pathology, Brazil, Case-Control Studies, Female, Gene Expression, Gene Frequency, Humans, Interferon-gamma immunology, Interleukin-12 Subunit p40 immunology, Interleukin-18 immunology, Male, Middle Aged, Pilot Projects, Polymerase Chain Reaction, Polymorphism, Restriction Fragment Length, Risk, Arthritis, Rheumatoid genetics, Genetic Predisposition to Disease, Interferon-gamma genetics, Interleukin-12 Subunit p40 genetics, Interleukin-18 genetics, Polymorphism, Single Nucleotide
- Abstract
Polymorphisms in interleukin (IL)-18, IL-12 and interferon (IFN)-γ genes are associated with different levels of cytokines expression and have been associated with rheumatoid arthritis (RA). IL-18 +105 A/C, IL-12B +1188 A/C and IFN-γ +874 T/A polymorphisms were analyzed by restriction fragment length polymorphism-polymerase chain reaction (PCR) and amplification refractory mutation system PCR from 90 RA patients and 186 healthy individuals. There were significant differences to IL-18 +105 A/C polymorphism between the RA and control groups (odds ratio = 3.77; P < 0.0001). Individual carriers of the variant allele C had a 3.77-fold increased risk of for RA (P = 0.0032). No association was observed for IL-12B and IFN-γ polymorphisms. Our finds suggest a possible role for IL-18 polymorphism in the RA susceptibility in studied population., (© 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2015
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