Salvianolic acid B inhibits atherogenesis of vascular cells through induction of Nrf2-dependent heme oxygenase-1.

Abstract:

AIMS:Salvianolic acid B (Sal B), one of the most active components of Danshen extracts, has beneficial roles in the prevention and treatment of cardiovascular diseases. However, the precise mechanism by which Sal B exerts its effects on vascular cells is unclear. We aimed to elucidate the effects of Sal B on vascular cells and the underlying mechanisms. METHODS AND RESULTS:Treatment of vascular smooth muscle cells with Sal B effectively inhibited platelet-derived growth factor (PDGF)-induced cell proliferation and migration, and markedly increased heme oxygenase-1 (HO-1) expression. These changes were accompanied by antioxidant effects, including decreases in the generation of reactive oxygen species and the NADP/NADPH ratio. In human umbilical vein endothelial cells, Sal B also strongly induced HO-1 and effectively inhibited tumor necrosis factor-α-induced NF-κB activation. Knockdown of HO-1 expression by siRNA abolished the effects of Sal B in vascular cells and prevented the inhibition of proliferation, migration, and inflammation in HO-1-deficient cells. In ex vivo culture of arterial rings isolated from nuclear factor-E2-related factor 2 (Nrf2)-knockout mice, Sal B neither induce HO-1 expression and nor inhibit PDGF-induced neointimal hyperplasia in arteries, suggesting that Nrf2 plays a crucial role in the induction of HO-1 expression. CONCLUSIONS:We conclude that Sal B exerts antiatherogenic effects by inhibiting the proliferation, migration, and inflammation of vascular cells through induction of HO-1 via Nrf2 activation.

journal_name

Curr Med Chem

authors

Lee HJ,Seo M,Lee EJ

doi

10.2174/0929867321666140601195940

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

3095-106

issue

26

eissn

0929-8673

issn

1875-533X

pii

CMC-EPUB-60779

journal_volume

21

pub_type

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