Enhanced expression of interleukin 6 in rat and murine arthritis models
| Autor: | Takanori Murakami, Makoto Ueno, Tetsuya Tosa, Isao Takata, Osamu Furukawa, Takahisa Sugita |
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| Rok vydání: | 1993 |
| Předmět: |
Male
medicine.medical_treatment Immunology Type II collagen Arthritis Arthritis Rheumatoid Mice medicine Animals Bovine serum albumin Interleukin 6 Pharmacology Autoimmune disease biology Interleukin-6 business.industry Synovial Membrane Interleukin Fibroblasts medicine.disease Arthritis Experimental Rats Disease Models Animal Kinetics Cytokine Mice Inbred DBA Rats Inbred Lew Rheumatoid arthritis biology.protein Female Collagen business |
| Zdroj: | International Journal of Immunopharmacology. 15:469-476 |
| ISSN: | 0192-0561 |
| DOI: | 10.1016/0192-0561(93)90061-3 |
| Popis: | Interleukin 6 (IL-6) is a multifunctional cytokine and plays an important role in host defense mechanisms. Enhanced production of IL-6 has been reported in polyclonal B-cell abnormalities and autoimmune diseases such as rheumatoid arthritis (RA). To investigate the role of IL-6 in inflammatory joint diseases, serum IL-6 levels of three animal models of RA, namely type II collagen (CII)-induced murine, rat arthritis and adjuvant-induced rat arthritis, were monitored. In these models, serum IL-6 increased with the development of arthritis. Serum IL-6 was not elevated by immunization with a non-arthritogenic immunogen such as bovine type I collagen (CI) and bovine serum albumin (BSA) to DBA/1J mice. The serum IL-6 level was correlated well with the severity of adjuvant-induced arthritis. The elevated IL-6 in sera may be associated with the overproduction of IL-6 at the arthritic paws, because higher IL-6 activity was detected in the homogenates of arthritic paws as compared with the control paws. Synovial fibroblasts were isolated from the arthritic knee joints of DBA/1J mice. These cells expressed type I interleukin 1 (IL-1) receptor constitutively and produced large amounts of IL-6 in response to IL-1 in vitro . Enhanced production of IL-1 was also detected at the arthritic paws. These results suggest that the elevated IL-6 in sera may be associated with the overproduced IL-6 in response to the increased IL-1 at the arthritic joints. Serum IL-6 may be a useful parameter for monitoring disease activity. |
| Databáze: | OpenAIRE |
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