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2017 ; 14
(4
): 2925-2930
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English Wikipedia
Effects of leukotriene B4 on interleukin-32, interferon-? and chemokines in rats
with rheumatoid arthritis
#MMPMID28912850
Bi D
; Bi D
; Zhong M
; Zhang H
; Jin S
; Ma S
; Luo H
Exp Ther Med
2017[Oct]; 14
(4
): 2925-2930
PMID28912850
show ga
The objective of this study was to investigate the effects of leukotriene B4
(LTB4) on the expression of interleukin-32 (IL-32) interferon-? (IFN-?) and
chemokine monocyte chemoattractant protein (MCP-1) and macrophage inhibitory
protein (MIP-1?) in rheumatoid arthritis (RA). The rat model of RA collagen
induced-arthritis (CIA) was established. The levels of LTB4, interleukin-32,
IFN-? and chemokines MCP-1 and MIP-1? in CIA rats were detected by ELISA. After
the rat synovial cells were isolated and treated with different concentrations of
LTB4, the effect of LTB4 the expression of IL-32, IFN-? and chemokines MCP-1 and
MIP-1? mRNA in synovial cells was detected by real-time quantitative PCR, the
effect of LTB4 on protein expression was detected by immunoblotting. The effects
of different concentrations of LTB4 on the viability and apoptosis of synovial
cells were detected by LDH and cell proliferation reagent WST-1. Compared with
the control group, the levels of LTB4, IL-32, IFN-? and chemokines MCP-1 and
MIP-1? were significantly increased in the serum of the CIA group. After
treatment of CIA rat synovial cells with different concentrations of LTB4, the
expression of IL-32, IFN-? and chemokines MCP-1 and MIP-1? mRNA and protein were
increased with significant differences among groups. WST-1 and flow cytometry
showed that LTB4 had significant toxic effects on synovial cells and promoted
apoptosis. In conclusion, LTB4 promotes the expression of interleukin-32, IFN-?
and chemokines MCP-1 and MIP-1? in synovial cells and facilitates apoptosis of
synovial cells.