| 1 | Emodin alleviates cardiac fibrosis by suppressing activation of cardiac fibroblasts via upregulating metastasis associated protein 3显示文摘Excess activation of cardiac fibroblasts inevitably induces cardiac fibrosis. Emodin has been used as a natural medicine against several chronic diseases. The objective of this study is to determine the effects of emodin on cardiac fibrosis and the underlying molecular mechanisms. Intragastric administration of emodin markedly decreased left ventricular wall thickness in a mouse model of pathological cardiac hypertrophy with excess fibrosis induced by transaortic constriction(TAC) and suppressed activation of cardiac fibroblasts induced by angiotensin II(AngII). Emodin upregulated expression of metastasis associated protein 3(MTA3) and restored the MTA3 expression in the setting of cardiac fibrosis. Moreover, overexpression of MTA3 promoted cardiac fibrosis;in contrast, silence of MTA3 abrogated the inhibitory effect of emodin on fibroblast activation. Our findings unraveled the potential of emodin to alleviate cardiac fibrosis via upregulating MTA3 and highlight the regulatory role of MTA3 in the development of cardiac fibrosis. | Dan Xiao Yue Zhang Rui Wang Yujie Fu Tong Zhou Hongtao Diao Zhixia Wang Yuan Lin Zhange Li Lin Wen Xujuan Kang Philipp Kopylov Dmitri Shchekochikhin Yong Zhang Baofeng Yang | 2019 | Acta Pharmaceutica Sinica B2019，9，4： | 11 |
| 2 | Developing polydopamine modified molybdenum disulfide/epoxy resin powder coatings with enhanced anticorrosion performance and wear resistance on magnesium lithium alloys显示文摘Epoxy resin powder coating has been successfully applied on the corrosion protection of magnesium lithium alloys.However,poor wear resistance and microcracks formed during the solidification have limited it extensive application.There are limited approaches to exploit such anti-corrosion and mechanical properties of magnesium lithium alloys.Herein,the epoxy resin powder coating with polydopamine modified molybdenum disulfide(MoS_(2)@PDA-EP powder coating with 0,0.1,0.2,0.5,1.0 wt.%loading)was well prepared by melt extrusion to investigate its anticorrosion performance and wear resistance.The results revealed that the addition of MoS_(2)@PDA enhanced the adhesion strength between coatings and alloys,wear resistance and corrosion protection of the powder coatings.Among them,the optimum was obtained by 0.2 wt.%MoS_(2)@PDA-EP powder coating which could be attributed to well dispersion and efficient adhesion with coating matrix.To conclude,MoS_(2)@PDA-EP powder coating is meaningfully beneficial for the anticorrosive and wear performance improvement of magnesium lithium alloys. | Shibo Chen Changqing Yin Yi Wang Shuang Yi Xiang Gao Xujuan Zhang Qiyu Liao Yuxin Zhang Xia Zhao Jinsong Rao Baorong Hou | 2022 | Journal of Magnesium and Alloys2022，10，9： | 2 |
| 3 | Optimization for quantification of sorghum tannins by Ferric ammonium citrate assay显示文摘Due to the complexity of structure,it is difficult to determine the content of sorghum tannins.The current method for the determination of sorghum tannins is the Ferric ammonium citrate assay described in ISO 9648.However,the standard tannic acid(TA)used in the ISO 9648 method is significantly different in both structure and dynamics from sorghum tannins,resulting in inaccurate quantitative result.Furthermore,the extraction solvent,75%dimethylformamide(DMF),used in each step of this method had large toxicity to human.Hence,the objective of this study is to optimize the ISO 9648 method by selecting proper standard and extraction solvents so as to enhance the accuracy and safety.In this study,Sephadex LH-20 chromatography combined with high pressure liquid chromatography was used to purify and identify the extracted sorghum tannin(ST).Then,commercial TA,epicatechin(EA),grape seed procyanidin(PA)were selected as the standard and ST was used as reference for Ferric ammonium citrate assay to compare the effects of the three standards.Furthermore,the extraction rates of sorghum tannins in the presence of several low toxic solvents,such as absolute ethanol,absolute methanol,70%ethanol solution,70%methanol solution and 70%acetone solution,were compared to determine the alternative solvents of 75%DMF solution.The results showed that PA was superior to TA and EA in structure,with satisfactory color yield close to ST,and higher accuracy than TA.In terms of the extraction solvent,70%acetone solution was selected to replace 75%DMF solution because of its higher extraction yield(only next to 75%DMF)and low toxicity.Verification experiment results showed that both the recovery rate and the repeatability of the optimized method met the requirements of AOCO.Moreover,the optimized method,with higher accuracy and safety than the ISO 9648 method,can be applied widely in laboratory. | Xujuan Wang Xiaoxian Han Limin Li Xueling Zheng | 2020 | Grain & Oil Science and Technology2020，3，4： | 2 |
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