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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Arthritis+Rheumatol
2014 ; 66
(9
): 2521-31
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Interleukin-6 deficiency corrects nephritis, lymphocyte abnormalities, and
secondary Sjögren s syndrome features in lupus-prone Sle1 Yaa mice
#MMPMID24891301
Maier-Moore JS
; Horton CG
; Mathews SA
; Confer AW
; Lawrence C
; Pan Z
; Coggeshall KM
; Farris AD
Arthritis Rheumatol
2014[Sep]; 66
(9
): 2521-31
PMID24891301
show ga
OBJECTIVE: To assess disease features in Sle1.Yaa mice with genetic interleukin-6
(IL-6) deficiency. METHODS: Sera and tissues were collected from C57BL/6 (B6),
Sle1.Yaa, and Sle1.Yaa.IL-6(-/-) mice and analyzed for various features of
disease. Using serum samples, autoantibody specificities were determined by
enzyme-linked immunosorbent assay (ELISA) and indirect immunofluorescence,
cytokine production was analyzed by Luminex and ELISA, and levels of blood urea
nitrogen were determined by ELISA. Renal, lung, and salivary gland tissue
sections were evaluated for pathologic changes. Lymphocyte phenotypes, including
CD4+ T cell cytokine production, and those of follicular and extrafollicular T
helper subsets, germinal center B cells, and plasma cells, were determined using
flow cytometry. RESULTS: IL-6 deficiency not only ameliorated autoantibody
production and renal disease in this model, but also effectively reduced
inflammation of lungs and salivary glands. Furthermore, IL-6 deficiency abrogated
differentiation of Th1 and extrafollicular T helper cells, germinal center B
cells, and plasma cells in the spleen and eliminated renal T cells with IL-17,
interferon-?, and IL-21 production potential. CONCLUSION: Our findings highlight
IL-6-mediated T cell aberrations in Yaa-driven autoimmunity and support the
concept of therapeutic IL-6/IL-6 receptor blockade in systemic lupus
erythematosus and Sjögren's syndrome by impairing the production of
autoantibodies and lymphocytic infiltration of the kidneys, lungs, and salivary
glands.