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Characterization of polysaccharides from Tetrastigma hemsleyanum Diels et Gilg Roots and their effects on antioxidant activity and H2O2-induced oxidative damage in RAW 264.7 cells
BMC Chemistry ( IF 4.3 ) Pub Date : 2021-02-05 , DOI: 10.1186/s13065-021-00738-1
Qi Huang , Wen He , Ilkhomjon Khudoyberdiev , Chun-Lin Ye

This work presents an investigation on the composition and structure of polysaccharides from the roots of Tetrastigma hemsleyanum (THP) and its associated antioxidant activity. It further explores the protective effect of THP on RAW264.7 cells against cytotoxicity induced by H2O2. Ion chromatography (IC) revealed that THP contained glucose, arabinose, mannose, glucuronic acid, galactose and galacturonic acid, in different molar ratios. Furthermore, gel permeation chromatography-refractive index-multiangle laser light scattering (GPC-RI-MALS) was employed to deduce the relative molecular mass (Mw) of the polysaccharide, which was 177.1 ± 1.8 kDa. Fourier transform infrared spectroscopy (FT-IR) and Congo red binding assay highlighted that the THP had a steady α-triple helix conformation. Similarly, assays of antioxidant activity disclosed that THP had reasonable concentration-dependent hydroxyl radical and superoxide radical scavenging activities, peroxidation inhibition ability and ferrous ion chelating potency, in addition to a significant 1,1-diphenyl-2-picrylhydrazyl radical scavenging capacity. Moreover, THP could protect RAW264.7 cells against H2O2-induced cytotoxicity by decreasing intracellular ROS levels, reducing catalase (CAT) and superoxide dismutase (SOD) activities, increasing lactate dehydrogenase (LDH) activity and increment in malondialdehyde (MDA) level. Data retrieved from the in vitro models explicitly established the antioxidant capability of polysaccharides from T. hemsleyanum root extracts.

中文翻译:

四合木多糖的特性及其对RAW 264.7细胞抗氧化活性和H 2 O 2诱导的氧化损伤的影响

这项工作提出了对来自四叶草(THP)根的多糖的组成和结构及其相关的抗氧化活性的研究。它进一步探讨了THP对RAW264.7细胞对抗H2O2诱导的细胞毒性的保护作用。离子色谱法(IC)显示,THP含有不同摩尔比的葡萄糖,阿拉伯糖,甘露糖,葡萄糖醛酸,半乳糖和半乳糖醛酸。此外,采用凝胶渗透色谱-折射率-多角度激光散射(GPC-RI-MALS)得出多糖的相对分子质量(Mw),为177.1±1.8 kDa。傅里叶变换红外光谱(FT-IR)和刚果红结合测定法强调了THP具有稳定的α-三重螺旋构象。同样,抗氧化剂活性分析表明,THP除具有显着的1,1-二苯基-2-吡啶并肼基自由基清除能力外,还具有合理的浓度依赖性羟基自由基和超氧化物自由基清除活性,过氧化抑制能力和亚铁离子螯合能力。此外,THP可以通过降低细胞内ROS水平,降低过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性,增加乳酸脱氢酶(LDH)活性和丙二醛(MDA)含量升高来保护RAW264.7细胞免受H2O2诱导的细胞毒性。从体外模型中检索到的数据明确建立了来自棉铃虫根提取物的多糖的抗氧化能力。过氧化抑制能力和亚铁离子螯合能力,以及显着的1,1-二苯基-2-吡啶并肼基自由基清除能力。此外,THP可以通过降低细胞内ROS水平,降低过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性,增加乳酸脱氢酶(LDH)活性和丙二醛(MDA)含量升高来保护RAW264.7细胞免受H2O2诱导的细胞毒性。从体外模型中检索到的数据明确建立了来自棉铃虫根提取物的多糖的抗氧化能力。过氧化抑制能力和亚铁离子螯合能力,以及显着的1,1-二苯基-2-吡啶并肼基自由基清除能力。此外,THP可以通过降低细胞内ROS水平,降低过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性,增加乳酸脱氢酶(LDH)活性和丙二醛(MDA)含量升高来保护RAW264.7细胞免受H2O2诱导的细胞毒性。从体外模型中检索到的数据明确建立了来自棉铃虫根提取物的多糖的抗氧化能力。降低过氧化氢酶(CAT)和超氧化物歧化酶(SOD)的活性,增加乳酸脱氢酶(LDH)的活性,并提高丙二醛(MDA)的水平。从体外模型中检索到的数据明确建立了来自棉铃虫根提取物的多糖的抗氧化能力。降低过氧化氢酶(CAT)和超氧化物歧化酶(SOD)的活性,增加乳酸脱氢酶(LDH)的活性,并提高丙二醛(MDA)的水平。从体外模型中检索到的数据明确建立了来自棉铃虫根提取物的多糖的抗氧化能力。
更新日期:2021-02-05
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