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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 J+Cell+Mol+Med
2017 ; 21
(11
): 2823-2836
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C1q/TNF-related protein 9 inhibits the cholesterol-induced Vascular smooth muscle
cell phenotype switch and cell dysfunction by activating AMP-dependent kinase
#MMPMID28524645
Liu Q
; Zhang H
; Lin J
; Zhang R
; Chen S
; Liu W
; Sun M
; Du W
; Hou J
; Yu B
J Cell Mol Med
2017[Nov]; 21
(11
): 2823-2836
PMID28524645
show ga
Vascular smooth muscle cells (VSMCs) switch to macrophage-like cells after
cholesterol loading, and this change may play an important role in the
progression of atherosclerosis. C1q/TNF-related protein 9 (CTRP9) is a recently
discovered adipokine that has been shown to have beneficial effects on glucose
metabolism and vascular function, particularly in regard to cardiovascular
disease. The question of whether CTRP9 can protect VSMCs from cholesterol damage
has not been addressed. In this study, the impact of CTRP9 on cholesterol-damaged
VSMCs was observed. Our data show that in cholesterol-treated VSMCs, CTRP9
significantly reversed the cholesterol-induced increases in pro-inflammatory
factor secretion, monocyte adhesion, cholesterol uptake and expression of the
macrophage marker CD68. Meanwhile, CTRP9 prevented the cholesterol-induced
activation of the TLR4-MyD88-p65 pathway and upregulated the expression of
proteins important for cholesterol efflux. Mechanistically, as siRNA-induced
selective gene ablation of AMPK?1 abolished these effects of CTRP9, we concluded
that CTRP9 achieves these protective effects in VSMCs through the AMP-dependent
kinase (AMPK) pathway.
|AMP-Activated Protein Kinases/antagonists & inhibitors/*genetics/metabolism
[MESH]