[Objective] This study aimed to investigate the allelopathic effects of Torreya fargesii aril. [Method] By indoor bioassay, the effects of different con-centrations （10, 20,40, 80 g/L） of aqueous extract of T...[Objective] This study aimed to investigate the allelopathic effects of Torreya fargesii aril. [Method] By indoor bioassay, the effects of different con-centrations （10, 20,40, 80 g/L） of aqueous extract of T. fargesii aril on seed germination rate, seedling root length, seedling height, fresh weight, chlorophyll content, malondialdehyde （MDA） content and anti oxidative enzyme activities of radish, mustard and cabbage were analyzed and compared. [ Result] Different concentrations of aqueous extract of T. fargesii aril inhibited seed germination and seedling growth of three crops, and the inhibitory effects were enhanced with the increase of concentration. Seedling height and fresh weight of three crops were improved by low concentrations of aqueous extract of T. fargesii aril and inhibited by high concentrations of aqueous extract. Overall, aqueous extract of T. fargesii aril exhibited allelopathic inhibitory effects on three crops, and the level of allelopath-ic inhibitory effects demonstrated a descending order of radish 〉 mustard 〉 cabbage. Compared with the control group, 80 g/L aqueous extract of T. fargesii aril almost significantly reduced seed germination rate, seedling root length, seedling height, fresh weight and chlorophyll content, and significantly improved MDA con-tent and antioxidative enzyme （SOD, CAT, POD） activities of radish, mustard and cabbage （P 〈 0 .0 5 ） . [ Conclusion] Aqueous extract of T. fargesii aril exhibited remarkable allelopathic inhibitory effects on seed germination of radish, mustard and cabbage, which indicated that there might be dormancy-associated germination in-hibiting allelochemicals in T. fargesii aril. This study provided theoretical basis for subsequent clarification of the mechanism of seed dormancy of T. fargesii.展开更多
[Objectives]To explore the neuroprotective effects and mechanism of Longan Aril(LA)effective parts on PC12 cells injured by H2O2.[Methods]The neuroprotective effects of LA were evaluated by the cell viability,SOD and ...[Objectives]To explore the neuroprotective effects and mechanism of Longan Aril(LA)effective parts on PC12 cells injured by H2O2.[Methods]The neuroprotective effects of LA were evaluated by the cell viability,SOD and MDA content,apoptosis assay and relative protein expression of Aβand p-Tau.The neuroprotective mechanism of LA was studied by using metabolomics and network pharmacology,and the expressions of RAS/MEK/ERK signaling pathway-related proteins were detected by western blotting.[Results]LA could improve the cell survival rate and SOD content,and reduce apoptosis and expression of Aβand p-tau.Inhibition of RAS/MEK/ERK signaling pathway is a possible mechanism of LA neuroprotective effects.[Conclusions]LA has a neuroprotective effects in vitro and be likely to inhibit the process of AD by inhibition of RAS/MEK/ERK signalling pathway.展开更多
目的建立黔产香榧假种皮的高效液相色谱(HPLC)指纹图谱及多指标含量测定方法,为黔产香榧假种皮的资源利用提供科学依据。方法采用Agilent Eclipse Plus C 18色谱柱(4.6 mm×150 mm,5μm);以甲醇(A)-0.06%醋酸-水溶液(B)为流动相,梯...目的建立黔产香榧假种皮的高效液相色谱(HPLC)指纹图谱及多指标含量测定方法,为黔产香榧假种皮的资源利用提供科学依据。方法采用Agilent Eclipse Plus C 18色谱柱(4.6 mm×150 mm,5μm);以甲醇(A)-0.06%醋酸-水溶液(B)为流动相,梯度洗脱;流速1.0 mL/min;检测波长是230、255、270、330 nm;柱温30℃;进样量5μL。结果18批香榧假种皮指纹图谱相似度均大于0.995,共确定18个共有峰,指认了苯甲酸和金松双黄酮。对样品中的苯甲酸、异鼠李素、芹菜素、金松双黄酮和异银杏素5种化学成分进行含量测定和方法学考察,包括专属性、线性、精密度、重复性和稳定性,均符合要求;平均回收率在96.98%~101.08%,RSD≤1.57%。香榧假种皮中该5种化学成分的含量分别为(56.49~110.91、183.14~418.64、69.81~104.91、105.59~197.17、270.36~400.22)μg/g。结论本研究所建立的HPLC指纹图谱和多指标含量测定的方法准确可行,可作为黔产香榧假种皮质量评价的一种有效手段。展开更多
基金Supported by National Natural Science Foundation of China(31470568)Scientific and Technological Research Program of Chongqing Municipal Education Commission(KJ1401204)Program for Innovation Team Building of Yangtze Normal University(2014XJTD06)
文摘[Objective] This study aimed to investigate the allelopathic effects of Torreya fargesii aril. [Method] By indoor bioassay, the effects of different con-centrations （10, 20,40, 80 g/L） of aqueous extract of T. fargesii aril on seed germination rate, seedling root length, seedling height, fresh weight, chlorophyll content, malondialdehyde （MDA） content and anti oxidative enzyme activities of radish, mustard and cabbage were analyzed and compared. [ Result] Different concentrations of aqueous extract of T. fargesii aril inhibited seed germination and seedling growth of three crops, and the inhibitory effects were enhanced with the increase of concentration. Seedling height and fresh weight of three crops were improved by low concentrations of aqueous extract of T. fargesii aril and inhibited by high concentrations of aqueous extract. Overall, aqueous extract of T. fargesii aril exhibited allelopathic inhibitory effects on three crops, and the level of allelopath-ic inhibitory effects demonstrated a descending order of radish 〉 mustard 〉 cabbage. Compared with the control group, 80 g/L aqueous extract of T. fargesii aril almost significantly reduced seed germination rate, seedling root length, seedling height, fresh weight and chlorophyll content, and significantly improved MDA con-tent and antioxidative enzyme （SOD, CAT, POD） activities of radish, mustard and cabbage （P 〈 0 .0 5 ） . [ Conclusion] Aqueous extract of T. fargesii aril exhibited remarkable allelopathic inhibitory effects on seed germination of radish, mustard and cabbage, which indicated that there might be dormancy-associated germination in-hibiting allelochemicals in T. fargesii aril. This study provided theoretical basis for subsequent clarification of the mechanism of seed dormancy of T. fargesii.
基金Liaoning Natural Science Foundation(20180530033)Open Fund of Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications,Liaoning University of Traditional Chinese Medicine。
文摘[Objectives]To explore the neuroprotective effects and mechanism of Longan Aril(LA)effective parts on PC12 cells injured by H2O2.[Methods]The neuroprotective effects of LA were evaluated by the cell viability,SOD and MDA content,apoptosis assay and relative protein expression of Aβand p-Tau.The neuroprotective mechanism of LA was studied by using metabolomics and network pharmacology,and the expressions of RAS/MEK/ERK signaling pathway-related proteins were detected by western blotting.[Results]LA could improve the cell survival rate and SOD content,and reduce apoptosis and expression of Aβand p-tau.Inhibition of RAS/MEK/ERK signaling pathway is a possible mechanism of LA neuroprotective effects.[Conclusions]LA has a neuroprotective effects in vitro and be likely to inhibit the process of AD by inhibition of RAS/MEK/ERK signalling pathway.
文摘目的建立黔产香榧假种皮的高效液相色谱(HPLC)指纹图谱及多指标含量测定方法,为黔产香榧假种皮的资源利用提供科学依据。方法采用Agilent Eclipse Plus C 18色谱柱(4.6 mm×150 mm,5μm);以甲醇(A)-0.06%醋酸-水溶液(B)为流动相,梯度洗脱;流速1.0 mL/min;检测波长是230、255、270、330 nm;柱温30℃;进样量5μL。结果18批香榧假种皮指纹图谱相似度均大于0.995,共确定18个共有峰,指认了苯甲酸和金松双黄酮。对样品中的苯甲酸、异鼠李素、芹菜素、金松双黄酮和异银杏素5种化学成分进行含量测定和方法学考察,包括专属性、线性、精密度、重复性和稳定性,均符合要求;平均回收率在96.98%~101.08%,RSD≤1.57%。香榧假种皮中该5种化学成分的含量分别为(56.49~110.91、183.14~418.64、69.81~104.91、105.59~197.17、270.36~400.22)μg/g。结论本研究所建立的HPLC指纹图谱和多指标含量测定的方法准确可行,可作为黔产香榧假种皮质量评价的一种有效手段。
