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. 1989 Oct;78(1):138–142.

Linomide, a new immunomodulatory drug, shows different effects on homologous versus heterologous collagen-induced arthritis in rats.

S Kleinau 1, P Larsson 1, J Björk 1, R Holmdahl 1, L Klareskog 1
PMCID: PMC1534592  PMID: 2805418

Abstract

The effects of the immunomodulatory drug Linomide (LS-2616) have been investigated on two variants of collagen-induced arthritis (CIA) in Lewis rats, i.e. arthritis induced either with heterologous (bovine) or with homologous (rat) collagen type II (CII). Treatment with Linomide from the day of immunization (prophylactic) had a mild ameliorative effect on the severity of arthritis in the heterologous CIA, while the homologous CIA was strongly augmented. In both models, Linomide treatment caused a more severe arthritis when given from onset of clinical signs of disease and onwards (therapeutic). Serum antibody levels to CII were significantly decreased by prophylactic Linomide treatment in rats immunized with heterologous CII, while elevated levels of anti-rat CII antibodies were seen in the homologous model. No effect on antibody levels was seen with the therapeutic treatment regime. The opposing effects of prophylactic treatment with Linomide in heterologous versus homologous CIA indicate that the immune response to an autoantigen may be regulated differently from that to a foreign antigen. These results further strengthen the view that heterologous and homologous CIA should be regarded as separate experimental models, and that the studies on homologous CIA may represent a novel approach for future studies of autoimmune responses and evaluation of anti-rheumatic drugs.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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