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2015 ; 8
(4
): 5295-302
Nephropedia Template TP
gab.com Text
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English Wikipedia
Hydroxysafflor yellow A inhibits lipopolysaccharide-induced proliferation and
migration of vascular smooth muscle cells via Toll-like receptor-4 pathway
#MMPMID26131104
Yang G
; Zhou X
; Chen T
; Deng Y
; Yu D
; Pan S
; Song Y
Int J Clin Exp Med
2015[]; 8
(4
): 5295-302
PMID26131104
show ga
Abnormal proliferation and migration of vascular smooth muscle cells (VSMCs) is
closely associated with early vascular hyperplasic lesions. Toll-like receptor
(TLR)-4 is a pathogen pattern recognition receptor expressed on VSMCs, and can be
activated by lipopolysaccharide. Activated TLR-4 plays a promoting role in VSMCs
proliferation and migration through the downstream signaling pathways including
Rac1/Akt. Hydroxysafflor yellow A (HSYA) is the main component of the safflower
yellow pigments, which has long been used for the treatment of cardiovascular
diseases in traditional Chinese medicine. However, the effect of HSYA on VSMC
proliferation and migration remains unknown. In the present study, we showed that
HYSA could inhibit LPS-induced VSMCs proliferation and migration, accompanied by
the downregulated levels of several key pro-inflammatory cytokines, including
TNF-?, IL-6, and IL-8. We further showed that HYSA inhibited LPS-induced
upregulation of TLR-4 expression as well as the activation of Rac1/Akt pathway,
suggesting that HSYA inhibits LPS-induced VSMCs proliferation and migration,
partly at least, via inhibition of TLR-4/Rac1/Akt pathway. Accordingly, HSYA may
be used as a promising agent for prevention and treatment of vascular hyperplasic
disorders.