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A Polysaccharide from Amusium Pleuronectes Combined with Praziquantel Treatment Ameliorates Hepatic Fibrosis in Schistosoma Japonicum-Infected Mice

Xiaoniu Tang, Wei Hu, Yechao Lv, Wenqi Zhang, Tian Sun, Yuxin Jiang, Xiaodong Zhan, Shulin Zhou

(School of Preclinical Medicine, Wannan Medical College, Wuhu, Anhui, China (mainland))

Med Sci Monit 2018; 24:1597-1603

DOI: 10.12659/MSM.909320


BACKGROUND: Polysaccharides from bivalves have multiple bioactivities in various aspects of biology. However, the role of a polysaccharide derived from Amusium pleuronectes on potential hepatoprotective effects remains unclear.
MATERIAL AND METHODS: A water-soluble polysaccharide was isolated from Amusium pleuronectes (APS-1) using ultrasound-assisted hot-water extraction. The molecular weight of APS-1 was approximately 11.7 kDa and was determined by calibration with dextran. APS-1 was analyzed by high-performance liquid chromatography (HPLC), and mainly consisted of a uniform glucose polymer. The protective effect of APS-1 on Schistosoma japonicum-induced liver fibrosis was investigated in a mouse model.
RESULTS: Treatment with APS-1 increased serum levels of interleukin (IL)-12 and interferon (IFN)-γ, increased superoxide dismutase (SOD) activity, and decreased levels of IL-13 and IL-5, and hyaluronidase activity. Moreover, immunohistochemical analysis revealed that the collagen content of hepatic tissue of APS-1-treated mice, including that of collagen I, II, and IV, was dramatically decreased. Furthermore, our data showed that combined treatment of APS-1 with praziquantel had more pronounced effects than treatment with either APS-1 or praziquantel alone.
CONCLUSIONS: Our findings suggest that the treatment using APS-1 in combination with praziquantel attenuated S. japonicum egg-induced hepatic fibrosis, and possessed potent hepatoprotective activity.

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