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Research article - Peer-reviewed, 1998

Genetic control of arthritis onset, severity and chronicity in a model for rheumatoid arthritis in rats

Vingsbo-Lundberg, C; Nordquist, N; Olofsson, P; Sundvall, M; Saxne, T; Pettersson, U; Holmdahl, R

Abstract

Rheumatoid arthritis (RA) is a chronic and genetically complex inflammatory disorder that leads to erosive destruction of peripheral joints. The use of animal models mimicking RA, such as pristane-induced arthritis (PIA) in rats, should facilitate its genetic analysis. Pristane is a non-immunogenic synthetic oil that, after a single subcutaneous injection into DA rats, induces arthritis restricted to peripheral joints with a chronic relapsing disease course. To identify genes involved in the control of chronic arthritis, we made crosses between susceptible DA rats and resistant E3 rats and analysed the progeny with microsatellite markers covering the entire rat genome. Our results show that different arthritis phenotypes are associated with different chromosomal loci. Loci on chromosomes 4 and 6 (Pia2 and Pia3) influence arthritis onset, whereas a locus on chromosome 12 (Pia4) is associated with severity and joint erosion. We found that chronicity is associated with a different set of loci, one on chromosome 4 and the other on chromosome 14 (Pia5, Pia6). These findings demonstrate for the first time that different phases of a chronic self-perpetuative disease which mimics RA are associated with distinct sets of genes.

Published in

Nature Genetics
1998, Volume: 20, number: 4, pages: 401-404

    UKÄ Subject classification

    Immunology in the medical area
    Medical Genetics

    Publication identifier

    DOI: https://doi.org/10.1038/3887

    Permanent link to this page (URI)

    https://res.slu.se/id/publ/38728