Significant progress has been made in past decades in our understanding of the basic mechanisms underlying autoimmune diseases. Nevertheless, many questions remain unanswered, in particular regarding the mechanisms at very early stages of these diseases. Reliable animal models are of crucial importance in basic research and may help us to understand central disease pathways. They are also indispensable for pre-clinical drug testing. Here we present and discuss two mouse models of rheumatoid arthritis and multiple sclerosis, respectively. In experimental studies using the models of collagen-induced arthritis and experimental autoimmune encephalomyelitis, the efficacy of new biological agents has been tested, which paved the way for clinical trials. A further interesting field where mouse models may provide valuable informations, is the identification of susceptibility genes for autoimmune diseases. Overall, in some instances studies with inbred strains may have an advantage over human studies, because environmental factors may easily be controlled and the genetic differences between different mouse strains are better characterized.
Keywords: Autoimmunity, rheumatoid arthritis, multiple sclerosis, animal models, biological agents
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