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| 1 | Seven microcystins from Microcystis waterbloom in Lake Dalai,China显示文摘Seven types of microcystins,isolated from Microcystis waterbloom in Lake Dalai,were characterized.The major toxins:MCYST-LR,MCYST-RR,[D-Asp3]MCYST-LR and[Dha7]MCYST-LR were identified by high performance liquid chromatography(HPLC),as com-pared with the authentic microcystins.The minor toxins:MCYST FR,[L-Mser7]MCYST-LRand an unknown MCYST which was most likely to be MCYST-(H4)YR were identified with frit-fast atom bombardment liquid chromatography/mass spectrometry(Frit-FAB LC/MS)and aminoacid analysis.The toxigenic diversity in blue-green algae(cyanobacteria)was discussed. | He Zhenrong He Jiawan Yu Minjuan Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,ChinaQiao Mingye Shen Zhi Wu Liandi Inner Mongolia Environmental Science Research Instìtute,Huhehote 010010,ChinaWu Suozhu Guo Yunfeng Hulunbeer League Environmental Monitoring Station,Inner Mogolia 021008,ChinaFumio Kondo Aichi Prefectural Institute of Public Health,Tsuji-machi,Kita-ku,Nagoya 462,JapanKen-ichi Harada Faculty of Pharmacy,Meijo University,Tempaku,Nagoya 468,Japan | 1997 | Journal of Environmental Sciences1997，9，1： | 6 |
| 2 | Carboxymethyl chitosan as a polyampholyte mediating intrafibrillar mineralization of collagen via collagen/ACP self-assembly显示文摘The significant role of the polyelectrolytic nature of non-collagenous proteins (NCPs) in regulating the in vivo mineralization of collagen provides important insights for scientists searching for analogues of NCPs to achieve in vitro collagen mineralization. Polyampholyte carboxymethyl chitosan (CMC) has both carboxyl and amino groups, which allows it to act as a cationic or anionic polyelectrolyte below or above its isoelectric point (IP), respectively. In this study, CMC was employed as the analogue of NCPs to stabilize amorphous calcium phosphate (ACP) under acidic conditions (pH < 3.5) via the formation of CMC/ACP nanocomplexes. In the presence of both ACP nanoparticles and acid collagen molecules, ACP nanoparticles could be integrated into collagen fibrils during the process of collagen self-assembly and achieve intrafibrillar mineralization of collagen in vitro (i.e., synchronous self-assembly/mineralization (SSM) of collagen). This mode of mineralization is different from established mechanisms in which mineralization follows the self-assembly (MFS) of collagen. Thus, SSM provides a new strategy for developing materials from mineralized collagen scaffolds. | Mingli Lin Huanhuan Liu Jingjing Deng Ran An Minjuan Shen Yanqiu Li Xu Zhang | 2019 | Journal of Materials Science & Technology2019，35，9： | 4 |
| 3 | Effects of pioglitazone on proliferation and differentiation of human preadipocytes显示文摘Objective: To explore the effects of thiazolidinediones(TZDs) pioglitazone on proliferation and differentiation of human preadipocytes. Methods:Omental adipose tissue biopsies were obtained from 15 patients who were undergoing elective open-abdominal surgery. The primary culture and differentiated induction of human preadipocytes were performed, and the human preadipo-cytes were treated with pioglitazone at different concentrations at proper moments. Dynamic morphological changes of the human preadipocytes were observed, and their proliferation and differentiation were assessed with Colorimetric MTT Assay and Oil Red O Staining. Results:After 24 hours and 72 hours with pioglitazone, 0.1 μmol/L(μmol/ml) pioglitazone increased the MTT values of the human preadipocytes by 25.3% and 34.8%,respectively(P < 0.05), while 1 μmol/L pioglitazone by 27.4% and 26.6%(P < 0.05), compared with the control group without pioglitazone. The human preadipocytes with pioglitazone cumulated more adipose in the endochylema than those without pioglitazone obviously. 0.1 μmol/L pioglitazone increased the differentiation degree of the human preadipocytes differentiated for 8-10 days by 44.81% and 1 μmol/L pioglitazone by 53.76%(P < 0.05). Conclusion:Thiazolidinediones pioglitazone may significantly promote the proliferation and differentiation of the human omental preadipocytes. | Jianying Zhou Minjuan Ge Yamei Wang Haiwei Wu Jie Shen Xianghua Ma | 2007 | Journal of Nanjing Medical University2007，21，2： | 2 |
| 4 | Affective e-Learning:Using 'Emotional' Data to Improve Learning in Pervasive Learning Environment显示文摘 | Liping Shen Minjuan Wang Ruimin Shen | 2009 | Journal of Educational Technology & Society2009，，17： | 1 |
| 5 | BGB-A445,a novel non-ligand-blocking agonistic anti-OX40 antibody,exhibits superior immune activation and antitumor effects in preclinical models显示文摘t OX40 is a costimulatory receptor that is expressed primarily on activated CD4+,CD8+,and regulatory T cells.The ligation of OX40 to its sole ligand OX40L potentiates T cell expansion,differentiation,and activation and also promotes dendritic cells to mature to enhance their cytokine production.Therefore,the use of agonistic anti-Ox40 antibodies for cancer immunotherapy has gained great interest.However,most of the agonistic anti-OX40 antibodies in the clinic are OX40L-competitive and show limited efficacy.Here,we discovered that BGB-A445,a non-ligand-competitive agonistic anti-OX40 antibody currently under clinical investigation,induced optimal T cell activation without impairing dendritic cell function.In addition,BGB-A445 dose-dependently and significantly depleted regulatory T cells in vitro and in vivo via antibody-dependent cellular cytotoxicity.In the MC38 syngeneic model established in humanized OX40 knock-in mice,BGB-A445 demonstrated robust and dose-dependent antitumor efficacy,whereas the ligand-competitive anti-Ox40 antibody showed antitumor efficacy characterized by a hook effect.Furthermore,BGB-A445 demonstrated a strong combination antitumor effect with an anti-PD-1 antibody.Taken together,our findings show that BGB-A445,which does not block OX40-OX40L interaction in contrast to clinical-stage anti-OX40 antibodies,shows superior immune-stimulating effects and antitumor efficacy and thus warrants further clinical investigation. | Beibei Jiang Tong Zhang Minjuan Deng Wei Jin Yuan Hong Xiaotong Chen Xin Chen Jing Wang Hongjia Hou Yajuan Gao Wenfeng Gong Xing Wang Haiying Li Xiaosui Zhou Yingcai Feng Bo Zhang Bin Jiang Xueping Lu Lijie Zhang Yang Li Weiwei Song Hanzi Sun Zuobai Wang Xiaomin Song Zhirong Shen Xuesong Liu Kang Li Lai Wangl Ye Liu | 2023 | Frontiers of Medicine2023，17，6： | 0 |
| 6 | Investigation on step overcharge to self-heating behavior and mechanism analysis of lithium ion batteries显示文摘To obtain intrinsic overcharge boundary and investigate overcharge mechanism,here we propose an innovative method,the step overcharge test,to reduce the thermal crossover and distinguish the overcharge thermal behavior,including 5%state of charge(SOC)with small current overcharge and resting until the temperature equilibrium under adiabatic conditions.The intrinsic thermal response and the self-excitation behaviour are analysed through temperature and voltage changes during the step overcharge period.Experimental results show that the deintercalated state of the cathode is highly correlated to self-heating parasitic reactions.Before reaching the upper limit of Negative/Positive(N/P)ratio,the temperature changes little,the heat generation is significantly induced by the reversible heat(endothermic)and ohmic heat,which could balance each other.Following that the lithium metal is gradually deposited on the surface of the anode and reacts with electrolyte upon overcharge,inducing selfheating side reaction.However,this spontaneous thermal reaction could be“self-extinguished”.When the lithium in cathode is completely deintercalated,the boundary point of overcharge is about 4.7 V(~148%SOC,>40℃),and from this point,the self-heating behaviour could be continuously triggered until thermal runaway(TR)without additional overcharge.The whole static and spontaneous process lasts for 115 h and the side reaction heat is beyond 320,000 J.The continuous self-excitation behavior inside the battery is attributed to the interaction between the highly oxidized cathode and the solvent,which leads to the dissolution of metal ions.The dissolved metal ions destroy the SEI(solid electrolyte interphase)film on the surface of the deposited Li of anode,which induces the thermal reaction between lithium metal and the solvent.The interaction between cathode,the deposited Li of anode,and solvent promotes the temperature of the battery to rise slowly.When the temperature of the battery reaches more than 60℃,the reaction between lithium metal and solvent is accelerated.After the temperature rises rapidly to the melting point of the separator,it triggers the thermal runaway of the battery due to the short circuit of the battery. | Fengling Yun Shiyang Liu Min Gao Xuanxuan Bi Weijia Zhao Zenghua Chang Minjuan Yuan Jingjing Li Xueling Shen Xiaopeng Qi Ling Tang Yi Cui Yanyan Fang Lihao Guo Shangqian Zhao Xiangjun Zhang Shigang Lu | 2023 | Journal of Energy Chemistry2023，，4： | 0 |
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