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Abstract Title:

Hydroxysafflor Yellow A Promotes Angiogenesis via the Angiopoietin 1/ Tie-2 Signaling Pathway.

Abstract Source:

J Vasc Res. 2016 ;53(5-6):245-254. Epub 2016 Nov 29. PMID: 27894114

Abstract Author(s):

Tangting Chen, Ni Chen, Ningbo Pang, Lamei Xiao, Yongjie Li, Rong Li, Mao Luo, Xin Deng, Meiping Ren, Jianbo Wu, Liqun Wang

Article Affiliation:

Tangting Chen

Abstract:

BACKGROUND: The flowers of Carthamus tinctorius L. are widely used in traditional Chinese medicine to treat cerebrovascular and cardiovascular diseases. Hydroxysafflor yellow A (HSYA), the main constituent of C. tinctorius L. flowers, is known for its multiple biological activities. The present study investigated the effects of HSYA on angiogenesis in vitro and in a mouse hindlimb ischemia model.

METHODS: Using human umbilical vein endothelial cells (HUVEC) in vitro and a mouse hindlimb ischemia model in vivo, the angiogenic role of HSYA was evaluated.

RESULTS: HSYA significantly increased the capillary-like tube formation and migration of HUVEC. HSYA not only induced a rise in the expression of angiopoietin 1 and Tie-2 but it also increased phosphorylation of Tie-2, Akt, and extracellular signal-regulated kinase 1/2. Furthermore, an anti-Tie-2 neutralizing antibody significantly inhibited HSYA-induced HUVEC tube formation and migration. In vivo, the recovery of perfusion of ischemic hindlimb tissue after femoral artery interruption was significantly increased in HSYA-treated mice compared to vehicle controls. Consistent with these results, the arteriole and capillary densities in ischemic gastrocnemius muscles were significantly increased in HSYA-treated mice.

CONCLUSIONS: These results indicate the potential utility of HSYA for the treatment of ischemic diseases.

Study Type : Animal Study

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Sayer Ji
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