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834篇 您的检索式:作者名="Sun, Bing"
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1Antitumor activities of human autologous cytokineinduced killer(CIK)cells against hepatocellular carcinoma cells in vitro and in vivo显示文摘AIM: To characterize the anticancer function of cytokine-induced killer cells (CIK) and develop an adoptiveimmunotherapy for the patients with primary hepatocellularcarcinoma (HCC), we evaluated the proliferation rate,phenotype and the antitumor activity of human CIK cellsfrom healthy donors and HCC patients in vitro and in vivo.METHODS: Peripheral blood mononuclear cells (PBMC) fronhealthy donors and patients with primary HCC were incubatedin vitro and induced into ClK cells in the presence of variouscytokines such as interferon-gamma (IFN-γ), interleukin-1(IL-1), IL-2, and monoclonal antibody (mAb) against CD3.The phenotype and characterization of CIK cells wereidentified by flow cytometric analysis. The cytotoxicity of CIKcells was determined by 51 Cr release assay.RESULTS: The CIK cells were shown to be a heterogeneouspopulation with different cellular phenotypes. Thepercentage of CD3+/CD56+ positive cells, the dominanteffector cells, in total CIK cells from healthy donors andHCC patients, significantly increased from 0.1-0.13 % at day0 to 19.0-20.5 % at day 21 incubation, which suggested thatthe CD3+ CD56+ positive cells proliferated faster than othercell populations of CIK cells in the protocol used in thisstudy. After 28 day in vitro incubation, the ClK cells frompatients with HCC and healthy donors increased by morethan 300-fold and 500-fold in proliferation cell number,respectively. CIK cells originated from HCC patientspossessed a higher in vitro antitumor cytotoxic activity onautologous HCC cells than the autologous lymphokine-activated killer (LAK) cells and PBMC cells. In in vivoanimal experiment, CIK cells had stronger effects on theinhibition of tumor growth in Balb/c nude mice bearing BEL-7402-producing tumor than LAK cells (mean inhibitory rate,84.7 % vs 52.8 %, P < 0.05) or PBMC (mean inhibitoryrate, 84.7% vs37.1%, P<0.01).CONCLUSION: Autologous CIK cells are of highly efficientcytotoxic effector cells against primary hepatocellularcarcinoma cells and might serve as an alternative adoptivetherapeutic strategy for HCC patients.Fu-Sheng Wang Ming-Xu Liu Bing Zhang Ming Shi Zhou-Yun Lei Wen-Bing Sun Qing-You Du Ju-Mei Chen,Division of Biological Engineering,Beijing Institute of Infectious Diseases,Beijing 100039,China Wen-Bing Sun,Department of Surgery,Beijing Hospital of Infectious Diseases,Beijing 100039,China 2002World Journal of Gastroenterology2002,8,3:108
25-methylcytosine promotes mRNA export--NSUN2 as the methyltransferase and ALYREF as an m5C reader显示文摘Yang, Xin Yang, Ying Sun, Bao-Fa Chen, Yu-Sheng Xu, Jia-Wei Lai, Wei-Yi Li, Ang Wang, Xing Bhattarai, Devi Prasad Xiao, Wen Sun, Hui-Ying Zhu, Qin Ma, Hai-Li Adhikari, Samir Sun, Min Hao, Ya-Juan Zhang, Bing Huang, Chun-Min Huang, Niu Jiang, Gui-Bin Zhao, Yong-Liang Wang, Hai-Lin Sun, Ying-Pu Yang, Yun-Gui 2017Cell Research2017,27,5:62
3Nitric oxide suppresses NLRP3 inflammasome activation and protects against LPS-induced septic shock显示文摘Inflammasomes 是触发 caspase-1 的激活和 interleukin-1β 的成熟的多蛋白质建筑群;(IL-1β) ,然而,这些建筑群的规定仍然保持糟糕描绘了。这里,我们显示出那氮的氧化物(没有) 禁止了调停 NLRP3 的 ASC pyroptosome 形成, caspase-1 激活和 IL-1β在从老鼠和人的 myeloid 房间的分泌物。同时,内长不否定地也源于 iNOS (没有 synthase 的可诱导的形式) 调整 NLRP3 inflammasome 激活。iNOS 的弄空响应 LPS 和 ATP 导致了不正常的线粒体的增加的累积,它为增加的 IL-1β 负责;生产和 caspase-1 激活。没有生产的 iNOS 缺乏或药理学抑制在 vivo 提高了 NLRP3 依赖的 cytokine 生产,因此在老鼠从导致 LPS 的败血增加死亡,它被 NLRP3 阻止缺乏。我们的结果因此经由线粒体的稳定作为 NLRP3 inflammasome 的一个批评否定管理者不识别。这研究有重要含意让新策略的设计控制 NLRP3 相关的疾病。Kairui Mao Shuzhen Chen Mingkuan Chen Yonglei Ma Yan Wang Bo Huang Zhengyu He Yan Zeng Yu Htl Shuhui Sun Jing Li Xiaodong Wu Xiangrui Wang Warren Strober Chang Chen Guangxun Meng Bing Sun 2013Cell Research2013,23,2:59
42018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up.Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu 2018Science Bulletin2018,63,23:54
5Transplantation of UC-MSCs on collagen scaffold activates follicles in dormant ovaries of POF patients with long history of infertility显示文摘Premature ovarian failure(POF) is a refractory disease for clinical treatment with the goal of restoring fertility. In this study,umbilical cord mesenchymal stem cells on a collagen scaffold(collagen/UC-MSCs) can activate primordial follicles in vitro via phosphorylation of FOXO3 a and FOXO1. Transplantation of collagen/UC-MSCs to the ovaries of POF patients rescued overall ovarian function, evidenced by elevated estradiol concentrations, improved follicular development, and increased number of antral follicles. Successful clinical pregnancy was achieved in women with POF after transplantation of collagen/UC-MSCs or UC-MSCs. In summary, collagen/UC-MSC transplantation may provide an effective treatment for POF.Lijun Ding Guijun Yan Bin Wang Lu Xu Yan Gu Tong Ru Xiaoying Cui Lei Lei Jingyu Liu Xiaoqiang Sheng Bin Wang Chunxue Zhang Yanjun Yang Ruiwei Jiang Jianjun Zhou Na Kong Feifei Lu Huaijun Zhou Yannan Zhao Bing Chen Yali Hu Jianwu Dai Haixiang Sun 2018Science China(Life Sciences)2018,61,12:43
6Does Helicobacter pylori infection play a role in iron deficiency anemia? A meta-analysis显示文摘AIM:To perform a meta-analysis of observational studies and randomized controlled trials(RCTs)on the association between Helicobacter pylori(H.pylori)and iron deficiency anemia(IDA).METHODS:A defined search strategy was used to search Medline,Embase,the Cochrane Library,Clinical Trials,Cochrane Central Register of Controlled Trials,Premedline and Healthstar.Odds ratio(OR)was used to evaluate observational epidemiology studies,and weighted mean difference(WMD)was used to demonstrate the difference between control and intervention groups.RESULTS:Fifteen observational studies and 5 RCTs were identified and used for calculation.The pooled OR for observational studies was 2.22(95%CI:1.52-3.24,P<0.0001).The WMD for hemoglobin(HB) was 4.06 g/L(95%CI:-2.57-10.69,P=0.01),and the WMD for serum ferritin(SF)was 9.47μg/L(95%CI:-0.50-19.43,P<0.0001).Results were heterogeneous for all comparisons.CONCLUSION:This meta-analysis on observational studies suggests an association between H.pylori and IDA.In RCTs,eradication of H.pylori can improve HB and SF levels but not significantly.Qu, Xin-Hua Huang, Xiao-Lu Xiong, Ping Zhu, Cui-Ying Huang, You-Liang Lu, Lun-Gen Sun, Xu Rong, Lan Zhong, Liang Sun, Da-Yu Lin, Hai Cai, Ming-Ci Chen, Zhi-Wei Hu, Bing Wu, Lian-Ming Jiang, Yi-Bin Yan, Wei-Li 2010World Journal of Gastroenterology2010,16,7:34
7A Comparative Analysis of Environmental Quality Assessment Methods for Heavy Metal-Contaminated Soils显示文摘Four assessment methods(two pollution indexes and two fuzzy mathematical models) were employed to investigate the environmental quality of four soils around a ferroalloy plant in Nanjing City.Environmental quality was assessed as class IV(moderately polluted) for each soil with single-factor index method,and was identified to be classes IV,III(slightly polluted),III,and III for soils A,B,C,and D,respectively,with the comprehensive index model.In comparison with the single-factor index method,the comprehensive index model concerned both dominant parameter and average contribution of all factors to the integrated environmental quality.Using the two fuzzy mathematical methods(single-factor deciding and weighted average models),the environmental risks were determined to be classes IV,III,II(clean),and II for soils A,B,C,and D,respectively.However,divergence of the membership degree to each pollution class still occurred between the two methods.In fuzzy mathematical methods,membership functions were used to describe the limits between different pollution degrees,and different weights were allocated for the factors according to pollution contribution.Introduction of membership degree and weight of each factor to fuzzy mathematical models made the methods more reasonable in the field of environmental risk assessment.LI Wei-Xin ZHANG Xu-Xiang WU Bing SUN Shi-Lei CHEN Yan-Song PAN Wen-Yang ZHAO Da-Yong CHENG Shu-Pei 2008Pedosphere2008,18,3:29
8Astragaloside IV attenuates free fatty acid-induced ER stress and lipid accumulation in hepatocytes via AMPK activation显示文摘尽管非酒精的脂肪肝疾病(NAFLD ) 的致病完全没被理解,进肝和导致船边交货的肝的 endoplasmic 蜂窝胃的免费的丰满的酸(船边交货) 的增加的流入(嗯) 应力是在 NAFLD 的开始和开发的二关键病原的进程。在这研究,我们调查了 astragaloside IV (AS-IV ) 的效果,从 Astragali 根值净化的 bioactive 混合物,在在 hepatocytes 和阐明的位于 \O 下面机制的导致船边交货的类脂化合物累积上。人的 HepG2 房间和主要鼠科的 hepatocytes 暴露于船边交货(1 mmol/L, oleate/palmitate, 2:1 比率) 与或没有为 24 h 的 AS-IV。到船边交货的暴露在 hepatocytes 导致了显著类脂化合物累积,而有 AS-IV (100 g/mL ) 的合作处理显著地稀释了这现象。尤其是, AS-IV (50-200 g/mL ) concentration-dependently 提高了 AMPK, acetyl-CoA carboxylase (ACC ) 和 SREBP-1c 的 phosphorylation,禁止了累积,成熟 SREBP-1 并且随后的原子 translocation 减少了包括 acc1,船边交货和 scd1 的 lipogenic 基因的 mRNA 层次。AS-IV 处理 concentration-dependently 也稀释了导致船边交货肝嗯应力由关键标记, GRP78,砍和 p 津贴的减小证实了。Pretreated 有 AMPK 禁止者混合物 C (20 mol/L ) 的房间极大地减少了 AS-IV 的这些有益的效果。我们的结果证明 AS-IV 稀释导致船边交货嗯以在 hepatocytes 的一种 AMPK 依赖的方式的压力和类脂化合物累积,它为肝的脂肪变性作为有希望的治疗学支持它的使用。Bing ZHOU Dan-li ZHOU Xiao-hong WEI Rong-yu ZHONG Jie XU Liao SUN 2017Acta Pharmacologica Sinica2017,38,7:29
9Directional hydraulic fracturing to control hard-roof rockburst in coal mines显示文摘Hard roof is the main factor that induces rock-burst.In view of the present obvious weakness of control measures for hard roof rockburst in domestic collieries,the mechanism and field application of directional hydraulic fracturing technology for rock-burst prevention have been investigated in this paper using theoretical analysis and numerical simulation.The results show that the weighting span of the main roof and the released kinetic energy as well as the total elastic energy decreased greatly after the directional fracturing of hard roof with the mining progression,thereby reducing the rockburst hazard degree to coal body.The directional hydraulic fracturing technology was carried out in 6305 working face of Jisan Coal Mine to prevent rockburst.Field practices have proved that this technology is much simpler and safer to operate with better prevention effect compared with blasting.By optimizing the operation procedures and developing a new technology of automated high-pressure delivery pipe,the maximum fracturing radius now reaches more than 9 m and the borehole depth exceeds 20 m.Additionally,drilling cutting method was applied to monitor the stress of the coal mass before and after the fracturing,and the drill cuttings dropped significantly which indicates that the burst prevention effect of directional hydraulic fracturing technology is very remarkable.The research results of this paper have laid a theoretical and practical foundation for the widespread application of the directional hydraulic fracturing technology in China.Fan Jun Dou Linming He Hu Du Taotao Zhang Shibin Gui Bing Sun Xinglin 2012International Journal of Mining Science and Technology2012,22,2:28
10Bispectral index monitoring prevent awareness during total intravenous anesthesia: a prospective, randomized, double-blinded, multi-center controlled trial显示文摘背景了解是一般 anesthesia.In 中国的严肃的复杂并发症, intraoperative 了解的发生在经历全部的静脉内的麻醉( TIVA )的病人是 1 .In 这研究,我们比较了在指导的 Bispectral 索引(二度)和平淡的 TIVA 协议之间的了解的发生并且在阻止 awareness.Methods A 上评估了二度的效果未来,使随机化, 双blinded , multicenter 控制了试用 performed.Patients ( 18 岁)正在经历 TIVA 随机ZHANG Chen XU Liang MA Ya-qun SUN Yan-xia LI Yan-hong ZHANG Liang FENG Chun-sheng LUO Bing ZHAO Zhen-long GUO Jian-rong JIN Yao-jun WU Gang YUAN Wei YUAN Zhi-guo YUE Yun 2011Chinese Medical Journal2011,,22:22
11Negative regulation of NLRP3 infl ammasome signaling显示文摘Infl ammasomes are multiprotein complexes that serve as a platform for caspase-1 activation and interleukin-1β(IL-1β)maturation as well as pyroptosis.Though a number of infl ammasomes have been described,the NLRP3 inflammasome is the most extensively studied.NLRP3 inflammasome is triggered by a variety of stimuli,including infection,tissue damage and metabolic dysregulation,and then activated through an integrated cellular signal.Many regulatory mechanisms have been identifi ed to attenuate NLRP3 infl ammasome signaling at multiple steps.Here,we review the developments in the negative regulation of NLRP3 inflammasome that protect host from inflammatory damage.Shuzhen Chen Bing Sun 2013Protein & Cell2013,4,4:23
12Effect of intestinal ischemia-reperfusion on expressions of endogenous basic fibroblast growth factor and transforming growth factor β in lung and its relation with lung repair显示文摘AIM To study the changes of endogenoustransforming growth factor β(TGFβ)and basicfibroblast growth factor(bFGF)in lung followingintestinal ischemia and reperfusion injury andtheir effects on lung injury and repair.METHODS Sixty Wistar rats were divided intofive groups,which underwent sham-operation,ischemia(45 minutes),and reperfusion(6,24and 48 hours,respectively)after ischemia(45minutes).Immunohistochemical method wasused to observe the localization and amounts ofboth growth factors.RESULTS Positive signals of both growthfactors could be found in normal lung,mainly inalveolar cells and endothelial cells of vein.Afterischemia and reperfusion insult,expressions ofboth growth factors were increased and theiramounts at 6 hours were larger than those ofnormal control or of 24 and 48 hours after insult.CONCLUSION The endogenous bFGF and TGF βexpression appears to be up-regulated in thelung following intestinal ischemia andreperfusion,suggesting that both growth factorsmay be involved in the process of lung injury andrepair.Xiao Bing Fu Yin Hui Yang Tong Zhu Sun Xiao Man Gu Li Xian Jiang Xiao Oing Sun Zhi Yong Sheng Research Laboratory,304th Hospital of PLA,Beijing 100037,China 2000World Journal of Gastroenterology2000,6,3:21
13Expression of B7 costimulation molecules by colorectal cancer cells reduces tumorigenicity and induces anti-tumor immunity显示文摘METHODSB7genewastransfectedintomousecoloncancercellineCMT93.ThetransfectantswereselectedinDMEMcontaining800mg/LG418,andB7mole...HU Jin Yue, WANG Sa, ZHU Jian Gao, ZHOU Guo Hua and SUN Qu Bing 1999World Journal of Gastroenterology1999,5,2:20
14Multiscale modeling of heterogeneous propellants from particle packing tograin failure using a surface-based cohesive approach显示文摘In the present work,a computational framework is established for multiscale modeling and analysis ofsolid propellants.A packing algorithm,considering the ammonium perchlorate(AP) and aluminum(Al) particles asspheres or discs is developed to match the size distributionand volume fraction of solid propellants.A homogenizationtheory is employed to compute the mean stress and strainof a representative volume element(RVE).Using the meanresults,a suitable size of RVE is decided.Without considering the interfaces between particles and matrix,several numerical simulations of the relaxation of propellants are performed.The relaxation effect and the nonlinear mechanicalbehavior of propellants which are dependent on the appliedloads are discussed.A new technology named surface-basedcohesive behavior is proposed to describe the phenomenonof particle dewetting consisting of two ingredients:a damageinitiation criterion and a damage evolution law.Several examples considering contact damage behavior are computedand also nonlinear behavior caused by damaged interfaces isdiscussed in this paper.Furthermore the effects of the critical contact stress,initial contact stiffness and contact failuredistance on the damaged interface model have been studied.Shi-Jun Zhi Bing Sun Jian-Wei Zhang 2012Acta Mechanica Sinica2012,28,3:19
15Hierarchical 3D mesoporous silicon@graphene nanoarchitectures for lithium ion batteries with superior performance显示文摘硅为高能力锂离子电池作为最有希望的阳极材料被认出了。然而,大体积变化在骑车上在充电和分泌物期间导致 Si 电极和快能力损失的弄成粉。Si 电极的这个缺点能被联合与组织良好的 graphene 泡沫克服。在这个工作,层次三维的碳涂的 mesoporous Si nanospheres@graphene 泡沫(C@Si@GF ) nanoarchitectures 被热水泡喷射成功地综合帮助 chemical-vapor-deposition 和 magnesiothermic 减小方法。同样准备的 nanocomposites 的形态学和结构被扫描电子显微镜学,传播电子显微镜学和拉曼光谱学的地排放描绘。当在锂离子电池作为阳极材料采用了时, C@Si@GF nanocomposites 在 1 A/g,优秀的高率能力和突出的 cyclability 的当前的密度包括 1,200 mAh/g 的一个高特定的能力展出了优异电气化学的性能。验尸,分析鉴别在 200 个周期以后的 3D C@Si@GF 电极的形态学很好被维持。从 mesoporous Si nanospheres 和 graphene 泡沫 nanoarchitectures 的联合产生的 synergistic 效果可以处理 Si 电极的难处理的弄成粉问题。Shuangqiang Chen Peite Bao Xiaodan Huang Bing Sun Guoxiu Wang 2014Nano Research2014,7,1:19
16Transplantation of human bone marrow-derived mesenchymal stem cells transfected with ectodysplasin for regeneration of sweat glands显示文摘有严重完整厚度的灼伤损害的背景病人受不了他们的无能因为完全的 destructed 汗腺不能被改革,通过排汗维持身体温度。因为他们的容易的纯化和 multipotency,骨头导出髓的间充质的干细胞(BM-MSCs ) 为房间治疗代表理想的干细胞来源。在这研究,我们试图导致人的 BM-MSCs 通过 ectodysplasin (EDA ) 为汗腺新生区分进汗腺房间基因 transfection。EDA 和 EDA 受体(EDAR ) 的动态表示第一在胚胎学的开发期间在汗腺形成被观察的方法。在有 EDA 表示向量的 transfection 以后,人的 BM-MSCs 被移植进灼伤动物模型的受伤区域。汗腺的新生被排汗测试和 immunohistochemical 分析识别。结果 EDA 和 EDAR 的内长的表示在人的胎儿的皮肤与汗腺开发相关。在 EDA transfection 以后, BM-MSC 获得了 sweat-gland-cell 显型,由流动 cytometry 分析由他们汗腺标记的表示证实了。染色的 Immunohistochemical 揭示了一显著地到在烫伤的爪的汗腺的新生的 EDA-transfected BM-MSCs 的贡献。为为与 EDA-transfected BM-MSCs 对待的爪的排汗测试的积极的率比与 BM-MSCs 或 EDA 表示向量(P 0.05 ) 对待的那些显著地高。我们的结果在汗腺的发展证实了 EDA 的重要角色的结论。有 EDA 的 BM-MSCs transfected 显著地改进了汗腺新生。这研究为受伤皮肤和它的附器的修理和新生建议修改 EDA 的 MSC 的潜在的申请。CAI Sa PAN Yu HAN Bing SUN Tong-zhu SHENG Zhi-yong FU Xiao-bing 2011Chinese Medical Journal2011,,15:18
17Chemotherapy-induced intestinal inflammatory responses are mediated by exosome secretion of double-strand DNA via AIM2 inflammasome activation显示文摘化疗经常被知道导致严重的胃肠的道毒性,但是内在的机制仍然保持不清楚。这研究作为一个代表性的代理人认为广泛地应用的细胞毒素的代理人是 irinotecan (CPT-11 ) 并且证明治疗从说明混合物的限制剂量的肠的毒性的肠导致双海滨 DNA 的巨大的版本。明确地,通过 exosome 分泌物释放的 self-DNA 进入天生的有免疫力的房间的 cytosol 并且激活 AIM2 (在黑瘤 2 不在) inflammasome。这导致成熟 IL-1 和 IL-18 分泌物并且导致肠的 mucositis 和迟了发作的腹泻。有趣地,在 AIM2 缺乏的老鼠或由象镇静药那样的一个药理学禁止者,没有影响 CPT-11 的 anticancer 功效, AIM2 发信号的废除显著地减少导致药的腹泻的发生。这些调查结果提供化疗怎么触发引起肠的毒性的天生的有免疫力的回答的机械学的卓见,并且揭示维持反瘤效果,但是围绕联系不利煽动性的反应的新化疗政体。Lian, Qiaoshi Xu, Jun Yan, Shanshan Huang, Min Ding, Honghua Sun, Xiaoyu Bi, Aiwei Ding, Jian Sun, Bing Geng, Meiyu 2017Cell Research2017,27,6:18
18Historical trends of heavy metal contamination and their sources in lacustrine sediment from Xijiu Lake,Taihu Lake Catchment,China显示文摘Concentrations of Cd,Cr,Cu,Pb,Zn and Hg in Xijiu Lake sediment from the Taihu Lake catchment,China,were analyzed.Their contamination state was investigated based on the geoaccumulation index and enrichment factors.Statistical analysis was used to differentiate the anthropogenic versus natural sources of heavy metals (HMs),and the anthropogenic accumulation fluxes were calculated to quantify anthropogenic contribution to HMs.The results indicated that the lake sediment had been heavily contaminated by Cd,enrichment of Zn and Hg was at a relatively high level,while that of Cu and Pb was in the lower-to-moderate level and Cr was in the low enrichment level.Sources of Cr in the sediment were mainly from natural inputs,while other metals,especially Cd,were predominantly derived from anthropogenic sources.In the past century,anthropogenic accumulation fluxes of Pb,Zn and Hg increased by 0.1-47.3 mg/(cm2·yr),2.4-398.1 mg/(cm2·yr),and 3.7-110.3 ng/(m2·yr),respectively,accounting for most inputs of HMs entering the sediment.The contamination state of HMs varied with industrial development of the catchment,which demonstrated that contamination started in the early 20th century,reached the maximal level between the mid-1970s and mid-1990s,and decreased a little after the implementation of constraints on high contamination industries,although the contamination of some HMs,such as Cd,Zn and Hg,is still at high levels.Haijian Bing Yanhong Wu Zhaobin Sun Shuchun Yao 2011Journal of Environmental Sciences2011,23,10:18
19Microwave Exposure Impairs Synaptic Plasticity in the Rat Hippocampus and PC12 Cells through Over-activation of the NMDA Receptor Signaling Pathway显示文摘Objective The aim of this study is to investigate whether microwave exposure would affect the N-methyl-D-aspartate receptor(NMDAR) signaling pathway to establish whether this plays a role in synaptic plasticity impairment. Methods 48 male Wistar rats were exposed to 30 m W/cm2 microwave for 10 min every other day for three times. Hippocampal structure was observed through H&E staining and transmission electron microscope. PC12 cells were exposed to 30 m W/cm2 microwave for 5 min and the synapse morphology was visualized with scanning electron microscope and atomic force microscope. The release of amino acid neurotransmitters and calcium influx were detected. The expressions of several key NMDAR signaling molecules were evaluated. Results Microwave exposure caused injury in rat hippocampal structure and PC12 cells, especially the structure and quantity of synapses. The ratio of glutamic acid and gamma-aminobutyric acid neurotransmitters was increased and the intracellular calcium level was elevated in PC12 cells. A significant change in NMDAR subunits(NR1, NR2 A, and NR2B) and related signaling molecules(Ca2+/calmodulin-dependent kinase II gamma and phosphorylated c AMP-response element binding protein) were examined. Conclusion 30 m W/cm2 microwave exposure resulted in alterations of synaptic structure, amino acid neurotransmitter release and calcium influx. NMDAR signaling molecules were closely associated with impaired synaptic plasticity.XIONG Lu SUN Cheng Feng ZHANG Jing GAO Ya Bing WANG Li Feng ZUO Hong Yan WANG Shui Ming ZHOU Hong Mei XU Xin Ping DONG Ji YAO Bin Wei ZHAO Li PENG Rui Yun 2015Biomedical and Environmental Sciences2015,28,1:16
20Antidiabetic effects of chitooligosaccharides on pancreatic islet cells in streptozotocin-induced diabetic rats显示文摘AIM: To investigate the effect of chitooligosaccharides on proliferation of pancreatic islet cells, release of insulin and 2 h plasma glucose in streptozotocin-induced diabetic rats.METHODS: In vitro, the effect of chitooligosaccharides on proliferation of pancreatic islet cells and release of insulin was detected with optical microscopy, colorimetric assay, and radioimmunoassay respectively. In vivo, the general clinical symptoms, 2 h plasma glucose, urine glucose, oral glucose tolerance were examined after sixty days of feeding study to determine the effect of chitooligosaccharides in streptozotocin-induced diabetic rats. RESULTS: Chitooligosaccharides could effectively accelerate the proliferation of pancreatic islet cells. Chitooligosaccharides (100 mg/L) had direct and prominent effect on pancreastic β cells and insulin release from islet cells. All concentrations of chitooligosaccharides could improve the general clinical symptoms of diabetic rats, decrease the 2 h plasma glucose and urine glucose, and normalize the disorders of glucose tolerance.CONCLUSION: Chitooligosaccharides possess various biological activities and can be used in the treatment of diabetes mellitus.Bing Liu Wan-Shun Liu Bao-Qin Han Yu-Ying Sun 2007World Journal of Gastroenterology2007,13,5:16
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