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Exacerbation of type II collagen–induced arthritis in apolipoprotein E–deficient mice in association with the expansion of Th1 and Th17 cells

AuthorsPostigo, Jorge; Genre, Fernanda; Iglesias, Marcos ; Fernández-Rey, Maigualida Tamara; Buelta, Luis; Rodríguez-Rey, José C.; Merino, Jesús; Merino, Ramón
Issue Date30-Mar-2011
CitationArthritis and Rheumatism 63(4): 971–980 (2011)
Abstract[Objective]: To explore the bidirectional relationship between the development of rheumatoid arthritis (RA) and atherosclerosis using bovine type II collagen (CII)–immunized B10.RIII apoE−/− mice, a murine model of spontaneous atherosclerosis and collagen-induced arthritis (CIA). [Methods]: Male B10.RIII apoE−/− mice and wild-type controls were immunized with 150 μg of CII emulsified in Freund's complete adjuvant (CFA). The clinical, radiologic, and histopathologic severity of CIA, the levels of circulating IgG1 and IgG2a anti-CII antibodies, the expression of proinflammatory and antiinflammatory cytokines in the joints, and the percentages of Th1, Th17, and Treg lymphocytes in the draining lymph nodes were evaluated during CIA induction. In addition, the size of atherosclerotic lesions was assessed in these mice 8 weeks after CIA induction. [Results]: B10.RIII apoE−/− mice that were immunized with CII and CFA developed an exacerbated CIA that was accompanied by increased joint expression of multiple proinflammatory cytokines and by the expansion in the draining lymph nodes of Th1 and Th17 cells. In contrast, the size of vascular lesions in B10.RIII apoE−/− mice was not affected by the development of CIA. [Conclusion]: Our findings indicate that a deficiency in apolipoprotein E and/or its consequences in cholesterol metabolism act as accelerating factors in autoimmunity by promoting Th1 and Th17 inflammatory responses.
DescriptionEl pdf del artículo es la versión pre-print.
Publisher version (URL)http://dx.doi.org/10.1002/art.30220
Appears in Collections:(IBBTEC) Artículos
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