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Articles by Ruqi Yang
Total Records ( 2 ) for Ruqi Yang
  Xun Wang , Haifeng Liu , Ling Zhao , Han Dong , Yuhao Wang , Di Sun , Yuyin Liu , Ruqi Yang and Xuewei Li
  To study the effects of Crude Polysaccharides from Catathelasma ventricosum (CVCP) on proliferation and differentiation of 3T3-L1 preadipocyte. 3T3-L1 cells were treated with culture media contained different concentrations of CVCP (0, 150, 300 and 600 μg mL-1) for 24 h and subsequently cell proliferation was assayed by MTT Method. The extent of the differentiation was determined by fluescence spectrophotometry and Nile Red staining on days 8 after treatment with culture media supplemented with different concentration CVCP (0, 150, 300 and 600 μg mL-1). As the results, the different concentration CVCP (150, 300 and 600 μg mL-1) promoted proliferation of 3T3-L1 preadipocytes when compared with the control (p<0.05). And it stimulated cell differentiation into adipocyte at low concentration (150 μg mL-1) while it inhibited cell differentiation into adipocyte at higher concentration (300 and 600 μg mL-1). But the difference was not significant (p>0.05). Besides, lipid content in 3T3-L1 cells treated with 150 μg mL-1 was significantly higher than treated with 600 μg mL-1 (p<0.05). It can be concluded from the results that the CVCP promoted proliferation of the 3T3-L1 cells 24 h after treatment. Meanwhile, it was involved to some extent in regulation of adipogenesis and lipogenesis.
  Ling Zhao , Kaiyu Wang , Ruqi Yang , Xun Wang , Defang Chen and Fei Shi
  To deeply explore the pharmacological activities of the Chinese truffle Tuber sinense (CT) in this study, three kinds of the crude polysaccharides from Chinese Truffle Tuber sinense (CTCP) were extracted by the method of water extracting-alcohol precipitating which include Water-soluble Polysaccharide (W-CTCP) and Alkali-soluble Polysaccharides (A-CTCPI, A-CTCPII) and then the polysaccharide content of the CTCP were determined. The antioxidant activities of the CTCPs were evaluated by reducing power, superoxide radical and hydroxyl radical free radical-scavenging assay. As the results, the polysaccharide (W-CTCP, A-CTCPI and A-CTCPII) content was 46.76, 74.05 and 57.68%, respectively. The polysaccharides all exhibited antioxidant activities in vitro and W-CTCP showed the strongest activity. It can be concluded that the polysaccharides extracted from CT should be explored as a potential natural antioxidant agent for use in functional foods or medicine.
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