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Susceptibility for and clinical manifestations of rheumatoid arthritis are associated with polymorphisms of the TNF-alpha, IL-1 beta, and IL-lRa genes
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Medicine.
Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Reumatology.
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2002 (English)In: Journal of Rheumatology, ISSN 0315-162X, E-ISSN 1499-2752, Vol. 29, no 2, 212-219 p.Article in journal (Refereed) Published
Abstract [en]

Objective. To analyze the association of genetic polymorphisms of pro-inflammatory cytokines with rheumatoid arthritis (RA) in comparison with healthy controls from Northern Sweden and the potential contribution of these genetic variants for disease severity and development of cardiovascular complications.

Methods. Polymerase chain reaction amplification was used for analysis of TaqI restriction fragment length polymorphism (RFLP) of interleukin-1 beta (IL-1beta), variable tandem repeat polymorphism of IL-1 receptor antagonist (IL-1Ra) gene and NcoI RFLP at position -308 of tumor necrosis factor-alpha (TNF-alpha) gene, One hundred and fifty-four patients with RA, 42 men and 112 women, were consecutively recruited into the study through the Department of Rheumatology.

Results. The allele A1 of TNF-alpha was more common in the patient group (p < 0.01 OR = 1.62). Patients having the genotype A1A2 seemed to develop more severe disease compared with patients with A1A1 genotype: they were younger at disease onset (p < 0.05), had a higher accumulated disease activity (p < 0.05) and worse functional class (p < 0.05), Patients with genotype A2A2 of IL-1beta had higher accumulated disease activity score than patients with A1A1 and A1A2 (p < 0.05). The allelic combination A1 IL-1beta/A2 IL-1Ra was less prevalent in RA patients who developed cardiovascular complications (p < 0.005 OR = 0.20).

Conclusions. The A1 allele of TNF-alpha associates with RA. Genotypes A1A2 of TNF-alpha and A2A2 of IL-1beta are associated with more severe disease. The allelic combination A1 IL-1beta/A2 IL-1Ra is less often present in RA patients who developed cardiovascular complications.

Place, publisher, year, edition, pages
2002. Vol. 29, no 2, 212-219 p.
Keyword [en]
interleukin-1 beta; tumor necrosis factor alpha; interleukin-1 receptor antagonist; polymorphism; rheumatoid arthritis
National Category
Rheumatology and Autoimmunity
Identifiers
URN: urn:nbn:se:umu:diva-39165OAI: oai:DiVA.org:umu-39165DiVA: diva2:388908
Available from: 2011-01-18 Created: 2011-01-18 Last updated: 2017-12-11Bibliographically approved

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Wållberg-Jonsson, SolveigStegmayr, BirgittaRantapää-Dahlqvist, Solbritt

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