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Antioxidant and hepatoprotective activities of low molecular weight sulfated polysaccharide from Laminaria japonica

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Abstract

A low molecular weight sulfated polysaccharide (LMWF) was prepared from Laminaria japonica by mild acid hydrolysis. The antioxidant activity of LMWF in vitro was studied using three kinds of oxygen free radical systems. LMWF had effective scavenging abilities on superoxide radical, hydroxyl radical and hypochlorous acid directly in vitro. The hepatoprotective effect of LMWF was studied using two acute liver injury mice models induced by carbon tetrachloride (CCl4) and D-galactosamine (D-GalN). Addition of LMWF significantly lowered the content of serum malonaldehyde and markedly increased the activities of superoxide dismutase and glutathione peroxidase, compared with the model groups in both kinds of liver injury mice. Moreover, administration of LMWF significantly inhibited the elevation of glutamate pyruvate transaminase induced by CCl4 and D-GalN in mice. The results suggest that the antioxidant activity of LMWF plays an important role in its hepatoprotective effect in the liver injury mice induced by CCl4 and D-GalN.

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Authors
  1. Xue Zhao
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  2. Chang-Hu Xue
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  3. Zhao-Jie Li
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  4. Yue-Piao Cai
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  5. Hong-Ying Liu
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  6. Hong-Tao Qi
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Zhao, X., Xue, CH., Li, ZJ. et al. Antioxidant and hepatoprotective activities of low molecular weight sulfated polysaccharide from Laminaria japonica . Journal of Applied Phycology 16, 111–115 (2004). https://doi.org/10.1023/B:JAPH.0000044822.10744.59

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  • DOI: https://doi.org/10.1023/B:JAPH.0000044822.10744.59

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