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Articles by Ying-Ying Liu
Total Records ( 3 ) for Ying-Ying Liu
  Li-Chun Zhao , Ying Liu , Zi Wang , Nong Tang , Jing Leng , Bing Zheng , Ying-Ying Liu and Wei Li
  Background and Objective: Platycodi Radix (PR), a famous traditional medicine and folk food, has been used in China. PR exerted numerous pharmacological activities including anti-tumor, anti-obesity and anti-inflammation. The present study aimed to investigate the active constituents by Liquid Chromatography/Mass Spectrometry (LC/MS) analysis and protective effects of saponins from the steamed Platycodi Radix (SSPR) on acute alcohol-induced liver injury in mice. Materials and Methods: Pretreatment with SSPR (100, 200 and 400 mg kg–1) prior to alcohol administration significantly prevented the activities of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and triglyceride (TG) in serum, malondialdehyde (MDA) level in liver tissue compared with the alcohol group (p<0.05). Results: The level of enzymatic antioxidants glutathione (GSH) was increased noticeably (p<0.05) in SSPR pretreatment mice liver tissue. Histopathological examination revealed that pretreatment with 400 mg kg–1 of SSPR markedly ameliorated acute alcohol-induced hepatocyte apoptosis and fatty degeneration. The findings from LC/MS analysis indicated that SSPR had more saponins than unheated-processed one and SSPR mainly contain a polyacetylene (Lobetyolin) and 22 saponins. Conclusion: These results showed the beneficial effect of SSPR on acute alcohol-induced oxidative stress and liver damage.
  Ying-Ying Liu , Ji-Cheng Ma , Lai-Ping Zhang and Jian-Fang Ma
  Four coordination polymers, [Ag(L1)](m-Hbdc) (1), [Ag(L1)]2(p-bdc) · 8H2O (2), [Ag(Hbtc)(L1)][Ag(L1)] · 2H2O (3) and [Ag2(L2)2](OH-bdc)2 · 4H2O (4), where L1 = 1,1`-(1,4-butanediyl)bis(imidazole), L2 = 1,2-bis(imidazol-1-ylmethyl)benzene, m-H2bdc = 1,3-benzenedicarboxylic acid, p-H2bdc = 1,4-benzenedicarboxylic acid, H3btc = 1,3,5-benzenetricarboxylic acid, and OH-H2bdc = 5-hydroxisophthalic acid, were synthesized under hydrothermal conditions. Compound 1 contains a-Ag-L1-Ag-L1-chain and a hydrogen-bonding interaction induced-(m-Hbdc)-(m-Hbdc)-chain. Compound 2 consists of two independent-Ag-L1-Ag-L1-chains. P-bdc anions are not coordinated. Hydrogen bonds form a 3D supramolecular structure. A novel (H2O)16 cluster is formed by lattice water molecules in 2. Compound 3 contains a-Ag-L1-Ag-L1-and a-Ag(Hbtc)-L1-Ag(Hbtc)-L1-chain. The packing diagram shows a 2D criss-cross supramolecular structure, with π ··· π and C-H ··· π interactions stabilizing the framework. Compound 4 contains a [Ag2(L2)2]2+ dimer with hydrogen-bonding, π ··· π, and Ag ··· O interactions forming a 3D supramolecular framework. The luminescent properties for these compounds in the solid state are discussed.
  Ying-Ying Liu , Ji-Cheng Ma , Yun-Peng Xie and Jian-Fang Ma
  Two new coordination polymers, namely [Zn3(1,3,5-BTC)2(L1)2(H2O)2] · 2H2O (1) and [Cd3(1,2,3-BTC)2(L2)3] · H2O (2) (where L1 = 1,2-bis(imidazol-1-ylmethyl)benzene, L2 = 1,1`-(1,4-butanediyl)bis(imidazole), 1,3,5-H3BTC = 1,3,5-benzenetricarboxylic acid and 1,2,3-H3BTC = 1,2,3-benzenetricarboxylic acid), were synthesized in hydrothermal conditions. In 1, each 1,3,5-BTC anion coordinates to three Zn cations, and the framework of 1 can be simplified as (6 · 8 · 10)2(62 · 8 · 103)(82 · 10)(62 · 10) topology. In 2, 1,2,3-BTC anions coordinate to three cadmiums, and the whole structure displays a (62 · 84)2(64 · 8 · 10)(62 · 8)2 network containing three different types of nodes. The luminescent properties for 1 and 2 are discussed.
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