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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+Res+Ther
2014 ; 16
(2
): R96
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Interleukin-10 attenuation of collagen-induced arthritis is associated with
suppression of interleukin-17 and retinoid-related orphan receptor ?t production
in macrophages and repression of classically activated macrophages
#MMPMID24742125
Ye L
; Wen Z
; Li Y
; Chen B
; Yu T
; Liu L
; Zhang J
; Ma Y
; Xiao S
; Ding L
; Li L
; Huang Z
Arthritis Res Ther
2014[Apr]; 16
(2
): R96
PMID24742125
show ga
INTRODUCTION: Our objective in the present study was to determine the signaling
pathway of interleukin 10 (IL-10) for modulating IL-17 expression in macrophages
and the importance of this mediation in collagen-induced arthritis (CIA).
METHODS: IL-10-knockout (IL-10?/?) mice and wild-type (WT) mice were immunized
with chicken type II collagen (CII) to induce arthritis. The expression levels of
IL-17 and retinoid-related orphan receptor ?t (ROR?t) in macrophages and joint
tissues of IL-10?/? and WT mice were analyzed by enzyme-linked immunosorbent
assay, quantitative RT-PCR (qRT-PCR) and Western blotting. The F4/80 macrophages
and positive IL-17-producing macrophages in synovial tissues of the mice were
determined by immunohistochemistry. The populations of classically activated
macrophage (M1) and alternatively activated macrophage (M2) phenotypes were
analyzed by flow cytometry. The expression of genes associated with M1 and M2
markers was analyzed by qRT-PCR. RESULTS: Compared to WT mice, IL-10?/? mice had
exacerbated CIA development, which was associated with increased production of T
helper 17 cell (Th17)/Th1 proinflammatory cytokines and CII-specific
immunoglobulin G2a antibody after CII immunization. Macrophages in IL-10?/? mice
had increased amounts of IL-17 and ROR?t compared with the amounts in WT mice
with CIA. Immunofluorescence microscopy showed that the number of IL-17-producing
macrophages in synovial tissues was significantly higher in IL-10?/? mice than in
WT mice. IL-10 deficiency might promote macrophage polarization toward the
proinflammatory M1 phenotype, which contributes to the rheumatoid arthritis
inflammation response. CONCLUSION: IL-10 inhibits IL-17 and ROR?t expression in
macrophages and suppresses macrophages toward the proinflammatory M1 phenotype,
which is important for the role of IL-10 in mediating the pathogenesis of CIA.
|Animals
[MESH]
|Arthritis, Experimental/immunology
[MESH]
|Arthritis, Rheumatoid/*immunology
[MESH]
|Blotting, Western
[MESH]
|Enzyme-Linked Immunosorbent Assay
[MESH]
|Flow Cytometry
[MESH]
|Immunohistochemistry
[MESH]
|Interleukin-10/*immunology
[MESH]
|Interleukin-17/*immunology
[MESH]
|Macrophages/*immunology
[MESH]
|Male
[MESH]
|Mice
[MESH]
|Mice, Inbred C57BL
[MESH]
|Mice, Knockout
[MESH]
|Microscopy, Confocal
[MESH]
|Microscopy, Fluorescence
[MESH]
|Nuclear Receptor Subfamily 1, Group F, Member 3/*immunology
[MESH]