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Article Publish Status: FREE
Abstract Title:

Protective effect of astaxanthin on liver fibrosis through modulation of TGF-β1 expression and autophagy.

Abstract Source:

Mediators Inflamm. 2014 ;2014:954502. Epub 2014 Apr 17. PMID: 24860243

Abstract Author(s):

Miao Shen, Kan Chen, Jie Lu, Ping Cheng, Ling Xu, Weiqi Dai, Fan Wang, Lei He, Yan Zhang, Wang Chengfen, Jingjing Li, Jing Yang, Rong Zhu, Huawei Zhang, Yuanyuan Zheng, Yingqun Zhou, Chuanyong Guo

Article Affiliation:

Miao Shen

Abstract:

Liver fibrosis is a common pathway leading to cirrhosis and a worldwide clinical issue. Astaxanthin is a red carotenoid pigment with antioxidant, anticancer, and anti-inflammatory properties. The aim of this study was to investigate the effect of astaxanthin on liver fibrosis and its potential protective mechanisms. Liver fibrosis was induced in a mouse model using CCL4 (intraperitoneal injection, three times a week for 8 weeks), and astaxanthin was administered everyday at three doses (20, 40, and 80 mg/kg). Pathological results indicated that astaxanthin significantly improved the pathological lesions of liver fibrosis. The levels of alanine aminotransferase aspartate aminotransferase and hydroxyproline were also significantly decreased by astaxanthin. The same results were confirmed in bileduct liagtion, (BDL) model. In addition, astaxanthin inhibited hepatic stellate cells (HSCs) activation and formation of extracellular matrix (ECM) by decreasing the expression of NF-κB and TGF-β1 and maintaining the balance between MMP2 and TIMP1. In addition, astaxanthin reduced energy production in HSCs by downregulating the level of autophagy. These results were simultaneously confirmed in vivo and in vitro. In conclusion, our study showed that 80 mg/kg astaxanthin had a significant protective effect on liver fibrosis by suppressing multiple profibrogenic factors.

Study Type : Animal Study

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