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163篇 您的检索式:作者名="Na Pan"
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1Antidiabetic Effects of Gegen Qinlian Decoction via the Gut Microbiota Are Attributable to Its Key Ingredient Berberine显示文摘Gegen Qinlian Decoction(GQD),a traditional Chinese medicine(TCM)formula,has long been used for the treatment of common metabolic diseases,including type 2 diabetes mellitus.However,the main limitation of its wider application is ingredient complexity of this formula.Thus,it is critically important to identify the major active ingredients of GQD and to illustrate mechanisms underlying its action.Here,we compared the effects of GQD and berberine,a hypothetical key active pharmaceutical ingredient of GQD,on a diabetic rat model by comprehensive analyses of gut microbiota,short-chain fatty acids,proinflammatory cytokines,and ileum transcriptomics.Our results show that berberine and GQD had similar effects on lowering blood glucose levels,modulating gut microbiota,inducing ileal gene expression,as well as relieving systemic and local inflammation.As expected,both berberine and GQD treatment significantly altered the overall gut microbiota structure and enriched many butyrate-producing bacteria,including Faecalibacterium and Roseburia,thereby attenuating intestinal inflammation and lowering glucose.Levels of short-chain fatty acids in rat feces were also significantly elevated after treatment with berberine or GQD.Moreover,concentration of serum proinflammatory cytokines and expression of immune-related genes,including Nfkb1,Stat1,and Ifnrg1,in pancreatic islets were significantly reduced after treatment.Our study demonstrates that the main effects of GQD can be attributed to berberine via modulating gut microbiota.The strategy employed would facilitate further standardization and widespread application of TCM in many diseases.Xizhan Xu Zezheng Gao Fuquan Yang Yingying Yang Liang Chen Lin Han Na Zhao Jiayue Xu Xinmiao Wang Yue Ma Lian Shu Xiaoxi Hu Na Lyu Yuanlong Pan Baoli Zhu Linhua Zhao Xiaolin Tong Jun Wang 2020Genomics, Proteomics & Bioinformatics2020,18,6:29
2Baicalin induces ferroptosis in bladder cancer cells by downregulating FTH1显示文摘Ferroptosis is a non-apoptotic regulated cell death caused by iron accumulation and subsequent lipid peroxidation.Currently,the therapeutic role of ferroptosis on cancer is gaining increasing interest.Baicalin an active component in Scutellaria baicalensis Georgi with anticancer potential various cancer types;however,the effects of baicalein on bladder cancer and the underlying molecular mechanisms remain largely unknown.In the study,we investigated the effect of baicalin on bladder cancer cells5637 and KU-19-19.As a result,we show baicalin exerted its anticancer activity by inducing apoptosis and cell death in bladder cancer cells.Subsequently,we for the first time demonstrate baicalin-induced ferroptotic cell death in vitro and in vivo,accompanied by reactive oxygen species(ROS) accumulation and intracellular chelate iron enrichment.The ferroptosis inhibitor deferoxamine but not necrostatin-1,chloroquine(CQ),N-acetyl-L-cysteine,L-glutathione reduced,or carbobenzoxy-valyl-alanyl-aspartyl-[O-methyl]-fluoromethylketone(Z-VAD-FMK) rescued baicalin-induced cell death,indicating ferroptosis contributed to baicalin-induced cell death.Mechanistically,we show that ferritin heavy chain1(FTH1) was a key determinant for baicalin-induced ferroptosis.Overexpression of FTH1 abrogated the anticancer effects of baicalin in both 5637 and KU19-19 cells.Taken together,our data for the first time suggest that the natural product baicalin exerts its anticancer activity by inducing FTH1-dependent ferroptosis,which will hopefully provide a prospective compound for bladder cancer treatment.Na Kong Xiaying Chen Jiao Feng Ting Duan Shuiping Liu Xueni Sun Peng Chen Ting Pan Lili Yan Ting Jin Yu Xiang Quan Gao Chengyong Wen Weirui Ma Wencheng Liu Mingming Zhang Zuyi Yang Wengang Wang Ruonan Zhang Bi Chen Tian Xie Xinbing Sui Wei Tao 2021Acta Pharmaceutica Sinica B2021,11,12:23
3Current status of diagnosis and treatment of bladder cancer in China-Analyses of Chinese Bladder Cancer Consortium database显示文摘Objective:To investigate current status of diagnosis and treatment of bladder cancer in China.Methods:A database was generated by Chinese Bladder Cancer Consortium(CBCC).From January 2007 to December 2012,14,260 cases from 44 CBCC centers were included.Data of diagnosis,treatment and pathology were collected.Results:The average age was 63.5 year-old and most patients were male(84.3%).The most common histologic types were urothelial carcinoma(91.4%),adenocarcinoma(1.8%),and squamous carcinoma(1.9%).According to 1973 and 2004 WHO grading system,42.0%,41.0%,and 17.0% of patients were grade 1,2,and 3,and 16.0%,48.7%,and 35.3% of patients were papillary urothelial neoplasms of low malignant potential,low,and high grade,respectively.Non-muscle invasive bladder cancer(NMIBC)and muscle invasive bladder cancer(MIBC)were 25.2% and 74.1%,respectively(0.8% not clear).Carcinoma in situ was only 2.4%.Most patients were diagnosed by white-light cystoscopy with biopsy(74.3%).Fluorescence and narrow band imaging cystoscopy had additional detection rate of 1.0% and 4.0%,respectively.Diagnostic transurethral resection(TUR)provided detection rate of 16.9%.Most NMIBCs were treated with TUR(89.2%).After initial TUR,2.6%accepted second TUR,and 45.7%,69.9%,and 58.7% accepted immediate,induced,and maintenance chemotherapy instillation,respectively.Most MIBCs were treated with radical cystectomy(RC,59.7%).Laparoscopic RCs were 35.1%,while open RC 63.4%.Extended and standard pelvic lymph node dissection were 7% and 66%,respectively.Three most common urinary diversions were orthotopic neobladder(44%),ileal conduit(31%),and ureterocutaneostomy(23%).Only 2.3% of patients accepted neo-adjuvant chemotherapy and only 18%of T3 and T4 patients accepted adjuvant chemotherapy.Conclusion:Disease characteristics are similar to international reports,while differences of diagnosis and treatment exist.This study can provide evidences for revisions of the guideline on bladder cancer in China.Kaiwen Li Tianxin Lin Wei Xue Xin Mu Enci Xu Xu Yang Fubao Chen Guangyong Li Lulin Ma Guoliang Wang Chaozhao Liang Haoqiang Shi Ming Li Mao Tang Xueyi Xue Yisong Lv Yaoliang Deng Chengyang Li Zhiwen Chen Xiaozhou Zhou Fengshuo Jin Xudong Liu Jinxin Wei Lei Shi Xin Gou Weiyang He Liqun Zhou Lin Cai Baiye Jin Guanghou Fu Xiangbo Kong Hongyan Sun Ye Tian Lang Feng Tiejun Pan Yiyi Wu Dongwen Wang Hailong Hao Benkang Shi Yaofeng Zhu Qiang Wei Ping Han Changli Wu Dawei Tian Zhangqun Ye Zheng Liu Zhiping Wang Junqiang Tian Lin Qi Minfeng Chen Wei Li Jinchun Qi Gongxian Wang Longlong Fu Zhaolin Sun Guangheng Luo Zhoujun Shen Zhaowei Zhu Jinchun Xing Zhun Wu Dong Wei Xin Chen Yanqun Na Hongfeng Guo Chunxi Wang Zhihua Lu Chuize Kong Yang Liu Jin Yang Jianyun Hu Xin Gao Jielin Li Changjun Yin Pu Li Shan Chen Zhen Du Jiongming Li Yongji Yan Xu Zhang Shuang Huang Fangjian Zhou Zhiling Zhang Yinghao Sun Shuxiong Zeng Song Cen Jiaquan Zhou Hanzhong Li Jin Wen Jian Huang 2015Asian Journal of Urology2015,2,2:21
4A review of ecological restoration techniques in fluvial rivers显示文摘Rivers play an important role in people's living and agricultural production,however,intense human activities have broken the original ecological balance,and affected structures and functions of the river ecosystem.To restore the damaged river ecosystem back to a healthy status,effective ecological restoration measures need to be implemented.The main problems that the damaged rivers face are either the locally altered hydrological processes affected by construction of hydraulic facilities,or the deterioration of water quality resulted from pollution emissions,or both.In this study,ecological restoration techniques of the rivers affected by engineering control or pollution are reviewed respectively.In addition,three kinds of methods,i.e.physical,chemical and biological-ecological methods are introduced in details for the rivers affected by water pollution.At present,the development of river restoration techniques shows the following trends:1) the scale of ecological restoration is becoming larger;2) ecological restoration measures are required to meet multiple objectives;and 3) the management of water environment is changing from water quality management to aquatic ecosystem management.Baozhu Pan Jianping Yuan Xinhua Zhang Zhaoyin Wang Jiao Chen Jinyou Lu Wenjun Yang Zhiwei Li Na Zhao Mengzhen Xu 2016International Journal of Sediment Research2016,31,2:18
5A Cross-sectional Survey Assessing Carriage of Streptococcus pneumoniae in a Healthy Population in Xinjiang Uygur Autonomous Region of China显示文摘链球菌 pneumoniae 的车厢率和 serotype 分发(S。pneumoniae ) 在在中国遗体的一张健康人口不清楚。在这研究,我们在 Xinjiang 从 513 个个人收集了 oropharyngeal 拖把,中国。指向 lytA 基因和 12 serotypes 的实时 PCR 被估计识别 S。pneumoniae 马车。S 的全部的车厢率。pneumoniae 是 70.4%(361/513 ) 。最流行的 serotypes 是 19B/F, 18B/C, 5,并且 6A/B。S 的最高的车厢率。pneumoniae 6-10 年(88.6%) 在孩子被注意,它应得进一步的注意。二的合作殖民率或更多的 S。pneumoniae serotypes 是 79.8%(264/331 ) 。这研究试图在中国在健康个人之中调查基线 pneumococcal 马车率改进我们 S 的传染病学的理解。pneumoniae。XIE Na CHEN Zhao Yun CHEN Tao ZHU Bing Qing XU Li GAO Yuan ZHANG Ai Yu ZHAO Pan LIU Ji Wen SHAO Zhu Jun 2018Biomedical and Environmental Sciences2018,31,3:15
6An exploratory analysis of benthic macroinvertebrates as indicators of the ecological status of the Upper Yellow and Yangtze Rivers显示文摘这研究在黄和长江的来源区域介绍水的关於生命的集合的第一系统的分析的调查结果。它向一个起始的基础提供作为指示物选择代表性的有机体在这个区域估计河的水的生态的地位。Macroinvertebrates 被认为随着时间的过去由于他们的限制范围和坚持是长期的环境变化的好指示物。macroinvertebrates 的领域调查在长江的来源区域在黄河的来源区域,并且在 2010 年 7 月在 2009 年 8 月被进行。属于 29 个家庭和 59 个类的 macroinvertebrates 的总的来说 68 taxa 被识别。在他们之中是 8 个环节动物, 5 个软体动物, 54 个节肢动物和 1 个另外的动物。在 macroinvertebrates 的黄河, taxa 数字,密度和生物资源的来源区域是 50, 329 个人 m2 和 0.3966 g 分别地弄干重量 m2。为长江的来源区域的相等的数字是 29, 59 个人 m2 和 0.0307 g 弄干重量 m2。在长江的来源区域的更低的 benthic 动物资源被归功于到更高的高度,更高的沉积集中和沼泽地降级。这探索研究的初步的调查结果显示水力发电的发电站在 benthic 居民上有弱影响,但是一系列人的活动引起的沼泽地降级在 macroinvertebrates 的幸存上有灾难的影响。象保守放牧和植被管理那样的生态的保护措施被要求最小化草地降级和 desertification,并且减少土壤侵蚀率和河沉积分泌物。PAN Baozhu WANG Zhaoyin LI Zhiwei YU Guo-an XU Mengzhen ZHAO Na Gary BRIERLEY 2013Journal of Geographical Sciences2013,23,5:14
7Distribution and species composition of macroinvertebrates in the hyporheic zone of bed sediment显示文摘hyporheic 地区是 benthic 动物通常为他们的生命周期的任何部分生活,成长,喂,复制,并且存在的一张河床上的底层的层。hyporheic 地区被采样和实验在山溪流学习。在 hyporheic 地区的 Macroinvertebrates 从 2008 年 5 月从回教的安息日, Xizhi, Songhua, Yanghe,和 Guishui 河被取样到 2009 年 8 月。在石子或卵石床的不同深度的 macroinvertebrates 的殖民的一个实验在回教的安息日河里被进行。结果表明有生活 macroinvertebrates 的 hyporheic 地区的厚度在一个大范围以内变化了。hyporheic 地区在卵石床上在沙床,而是多达 60 厘米上仅仅是几厘米厚的。taxa 的数字与增加床材料的中部的直径增加了。众多的 taxa 在石子和卵石床被发现,但是很少在淤泥和好沙床被观察。实验显示出在大约 6 个星期内在一个新产地开拓殖民地于的那 macroinvertebrates;食肉动物种类更长拿了开拓殖民地于比另外的种类。Macroinvertebrate 丰富与床深度和沉积尺寸变化了。最高的丰富在 030 厘米的床深度被发现。更多的 macroinvertebrates 与 510 厘米的中部的直径比在卵石床上与 2 厘米的中部的直径在石子床上被发现。不同 taxa 展出了不同的床深度偏爱。Dytiscidae, Haliplidae,和 Atyidae 的幼虫与精装书或壳在床表面,和 taxa 附近仅仅在上面的层住在一起,例如比较喜欢的 Corydalidae, Naucoridae,和 Corbiculidae 的幼虫有比 30 厘米大的床深度的更低的层。Meng-zhen XU Zhao-yin WANG Bao-zhu PAN Na ZHAO 2012International Journal of Sediment Research2012,27,2:12
8Piglets cloned from induced pluripotent stem cells显示文摘Nana Fan Jijun Chen Zhouchun Shang Hongwei Dou Guangzhen Ji Qingjian Zou Lu Wu Lixiazi He Fang Wang Kai Liu Na Liu Jianyong Han Qi Zhou Dengke Pan Dongshan Yang Bentian Zhao Zhen Ouyang Zhaoming Liu Yu Zhao Lin Lin Chongming Zhong Quanlei Wang Shouqi Wang Ying Xu Jing Luan Yu Liang Zhenzhen Yang Jing Li Chunxia Lu Gabor Vajta Ziyi Li Hongsheng Ouyang Huayan Wang Yong Wang Yang Yang Zhonghua Liu Hong Wei Zhidong Luan Miguel A Esteban Hongkui Deng Huanming Yang Duanqing Pei Ning Li Gang Pei Lin Liu Yutao Du Lei Xiao Liangxue Lai 2013Cell Research2013,23,1:12
9Application of brassinolide alleviates cold stress at the booting stage of rice显示文摘The objective of the study was to determine the physiological mechanisms of plants in response to brassinolide(BR) alleviating cold water stress on rice. In this study, physiological responses of rice to exogenous BR and cold water submergence were investigated using the chilling-tolerant cultivar Kongyu 131(KY131) and the chilling-sensitive cultivar Kenjiandao 6(KJD6). A total of 2 mg L^-1 BR increased activities of superoxide dismutase(SOD) and peroxidase(POD) and the contents of soluble sugar, soluble protein, and chlorophyll, but decreased the malondialdehyde(MDA) content in KY131 and KJD6 under cold water stress. The observed decreases in SOD and POD activities and MDA content recovered quickly after plants were returned to irrigation with water at temperatures of about 23.0°C in 2014. Additionally, the contents of nitrogen(N), phosphorous(P), and potassium(K) were increased by BR treatment under cold water stress. Exposure to BR also raised the percentage of high effective leaf area and leaf area index at the heading stage. Furthermore, it promoted soluble sugar synthesis, increased the rate of dry matter accumulation, and enhanced the export and translocation rates of the stem-sheath. The yield in KJD6 was significantly(P≤0.01 and P≤0.05) higher than that of the control in 2013 and 2014, respectively. The effect of BR treatment on rice leaf SOD and POD activities, MDA, chlorophyll, P, and stem-sheath K contents were more significant in KJD6 than in KY131. In conclusion, exogenous BR effectively reduced the physiological and metabolic damage in rice due to cold stress at the booting stage, promoted functional recovery in plants that received irrigation with water at a normal temperature following cold stress, and mitigated the effects of cold water stress on yield.The two varieties exhibited differential responses to BR;the weaker cold-resistant variety was more sensitive to BR and displayed stronger responses to exogenous BR.WANG Shi-qiang ZHAO Hai-hong ZHAO Li-ming GU Chun-mei NA Yong-guang XIE Bao-sheng CHENG Shi-hua PAN Guo-jun 2020Journal of Integrative Agriculture2020,19,4:10
10Mercury adsorption characteristics of HBr-modified fly ash in an entrained-flow reactor显示文摘In this study, the mercury adsorption characteristics of HBr-modified fly ash in an entrained-flow reactor were investigated through thermal decomposition methods. The results show that the mercury adsorption performance of the HBr-modified fly ash was enhanced significantly. The mercury species adsorbed by unmodified fly ash were Hg Cl2,Hg S and Hg O. The mercury adsorbed by HBr-modified fly ash, in the entrained-flow reactor,existed in two forms, Hg Br2 and Hg O, and the HBr was the dominant factor promoting oxidation of elemental mercury in the entrained-flow reactor. In the current study, the concentration of Hg Br2 and Hg O in ash from the fine ash vessel was 4.6 times greater than for ash from the coarse ash vessel. The fine ash had better mercury adsorption performance than coarse ash, which is most likely due to the higher specific surface area and longer residence time.Yongsheng Zhang Lilin Zhao Ruitao Guo Na Song Jiawei Wang Yan Cao William Orndorff Wei-ping Pan 2015Journal of Environmental Sciences2015,27,7:9
11Origin of the unusually high dibenzothiophene concentrations in Lower Ordovician oils from the Tazhong Uplift,Tarim Basin,China显示文摘The origin of the unusually high dibenzothiophene (DBT) concentrations in Lower Ordovician oils from the Tazhong Uplift,Tarim Basin was studied by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS).The most abundant sulfur compounds in the oils are S 1 species with doublebond equivalent (DBE) values of 1-19 and 11-48 carbon atoms.The range of the number of carbon atoms in the sulfur compounds detected by the FT-ICR MS (S 1 species with DBE=9) is about ten times larger than that for sulfur compounds detected by GC/MS (DBTs).This suggests that FT-ICR MS is a much better approach than GC/MS for characterization of DBTs in crude oils.The abundance of S 1 species with DBE=1-8 decreased with increasing thermal maturity,while the abundance of S 1 species with DBE=9 (primarily DBTs) increased.Therefore,thermal maturity is an important factor in the formation of oils with high DBT concentrations.Unusually high abundances of S 1 species with low DBE values (1-8),which include sulfide,thiophene and benzothiophene,were observed in several oils,especially the TZ83 (O 1) oil with high or very high thermal maturity.Thermochemical sulfate reduction (TSR) was thought to be the reason for the high abundance of these low DBE compounds in deep reservoirs,and thermochemical sulfate reduction could affect the distribution and composition of DBTs in the oils.According to the results of FT-ICR MS analysis,there are no signs that TSR is occurring or has occurred recently for most of the Lower Ordovician oils.Li Sumei Pang Xiongqi Shi Quan Zhang Baoshou Zhang Haizu Pan Na Zhao Ming 2011Petroleum Science2011,8,4:9
12Long-term bone and lung consequences associated with hospital-acquired severe acute respiratory syndrome:a 15-year follow-up from a prospective cohort study显示文摘The most severe sequelae after rehabilitation from SARS are femoral head necrosis and pulmonary fibrosis. We performed a 15-year follow-up on the lung and bone conditions of SARS patients. We evaluated the recovery from lung damage and femoral head necrosis in an observational cohort study of SARS patients using pulmonary CT scans, hip joint MRI examinations, pulmonary function tests and hip joint function questionnaires. Eighty medical staff contracted SARS in 2003. Two patients died of SARS, and78 were enrolled in this study from August 2003 to March 2018. Seventy-one patients completed the 15-year follow-up. The percentage of pulmonary lesions on CT scans diminished from 2003(9.40 ± 7.83)% to 2004(3.20 ± 4.78)%(P < 0.001) and remained stable thereafter until 2018(4.60 ± 6.37)%. Between 2006 and 2018, the proportion of patients with interstitial changes who had improved pulmonary function was lower than that of patients without lesions, as demonstrated by the one-second ratio(FEV1/FVC%, t = 2.21, P = 0.04) and mid-flow of maximum expiration(FEF25%–75%, t = 2.76, P = 0.01). The volume of femoral head necrosis decreased significantly from 2003(38.83 ± 21.01)% to 2005(30.38 ± 20.23)%(P = 0.000 2), then declined slowly from 2005 to 2013(28.99 ± 20.59)% and plateaued until 2018(25.52 ± 15.51)%. Pulmonary interstitial damage and functional decline caused by SARS mostly recovered, with a greater extent of recovery within 2 years after rehabilitation. Femoral head necrosis induced by large doses of steroid pulse therapy in SARS patients was not progressive and was partially reversible.Peixun Zhang Jia Li Huixin Liu Na Han Jiabao Ju Yuhui Kou Lei Chen Mengxi Jiang Feng Pan Yali Zheng Zhancheng Gao Baoguo Jiang 2020Bone Research2020,8,1:8
13Copper-Bismuth Bimetallic Microspheres for Selective Electrocatalytic Reduction of CO2 to Formate显示文摘Summary of main observation and conclusion Electrocatalytic carbon dioxide reduction holds great promise for reducing the atmospheric CO2 level and alleviating the energy crisis. High-performance electrocatalysts are often required in order to lower the high overpotential and expedite the sluggish reaction kinetics of CO2 electroreduction. Copper is a promising candidate metal. However, it usually suffers from the issues of poor stability and low product selectivity. In this work, bimetallic Cu-Bi is obtained by reducing the microspherical copper bismuthate (CuBi2O4) for selectively catalyzing the CO2 reduction to formate (HCOO-). The bimetallic Cu-Bi electrocatalyst exhibits high activity and selectivity with the Faradic efficiency over 90% in a wide potential window. A maximum Faradaic efficiency of ~95% is obtained at -0.93 V versus reversible hydrogen electrode. Furthermore, the catalyst shows high stability over 6 h with Faradaic efficiency of -95%. This study provides an important clue in designing new functional materials for CO2 electroreduction with high activity and selectivity.Lin Jia Hui Yang Jun Deng Junmei Chen Yuan Zhou Pan Ding Leigang Li Na Han Yanguang Li 2019Chinese Journal of Chemistry2019,37,5:8
14Molecular insights into the heterogeneity of telomere reprogramming in induced pluripotent stem cells显示文摘有各种各样的长度的 telomeres 的返老还童在导致的 pluripotent 干细胞(iPSCs ) 被发现了。telomere 长度规定的机制在 iPSCs 的正式就职和增长期间留下逃犯。我们证明 telomere 动力学在 reprogramming 和经过期间在鼠标 iPSCs 是可变的,并且建议这些差别多半源于多重潜在的因素,包括包括外长的 reprogramming 因素的表示的 telomerase 机械, telomerase 独立的机制和同种细胞的影响。用一个基因模型 telomerase 缺乏(为 iPSCs 的推导和段落的 Terc −/− 和 Terc +/−) 房间,我们发现 telomerase 在 iPSCs 的 reprogramming 和自强起一个关键作用。进一步,当由再结合的延伸和维护的其他的小径也被要求时, telomeres 的 telomerase 维护为真 pluripotency 的正式就职是必要的,然而并非足够。一起, telomere 生物学的几个方面可以在 iPSCs 说明可变 telomere 动力学。尤其是,采用在 iPSC reprogramming 期间维持 telomeres 的机制很类似于胚胎的干细胞的那些。这些调查结果可以也联系到这些机制能为在由体的房间的原子 reprogramming 以后的 telomere 异质负责的克隆的地原子转移。Fang Wang Yu Yin Xiaoying Ye Kai Liu Haiying Zhu Lingling Wang Maria Chiourea Maja Okuka Guangzhen Ji Jiameng Dan Bingfeng Zuo Minshu Li Qian Zhang Na Liu Lingyi Chen Xinghua Pan Sarantis Gagos David L Keefe Lin Liu 2012Cell Research2012,22,4:7
15Acellular ostrich corneal stroma used as scaffold for construction of tissue-engineered cornea显示文摘AIM:To assess acellular ostrich corneal matrix used as a scaffold to reconstruct a damaged cornea.· METHODS:A hypertonic saline solution combined with a digestion method was used to decellularize the ostrich cornea.The microstructure of the acellular corneal matrix was observed by transmission electron microscopy(TEM) and hematoxylin and eosin(H&E) staining.The mechanical properties were detected by a rheometer and a tension machine.The acellular corneal matrix was also transplanted into a rabbit cornea and cytokeratin 3 was used to check the immune phenotype.·RESULTS:The microstructure and mechanical properties of the ostrich cornea were well preserved after the decellularization process.In vitro,the methyl thiazolyl tetrazolium results revealed that extracts of the acellular ostrich corneas(AOCs) had no inhibitory effects on the proliferation of the corneal epithelial or endothelial cells or on the keratocytes.The rabbit lamellar keratoplasty showed that the transplanted AOCs were transparent and completely incorporated into the host cornea while corneal turbidity and graft dissolution occurred in the acellular porcine cornea(APC) transplantation.The phenotype of the reconstructed cornea was similar to a normal rabbit cornea with a high expression of cytokeratin 3 in the superficial epithelial cell layer.· CONCLUSION:We first used AOCs as scaffolds to reconstruct damaged corneas.Compared with porcine corneas,the anatomical structures of ostrich corneas are closer to those of human corneas.In accordance with the principle that structure determines function,a xenograft lamellar keratoplasty also confirmed that the AOC transplantation generated a superior outcome compared to that of the APC graft.Xian-Ning Liu Xiu-Ping Zhu Jie Wu Zheng-Jie Wu Yong Yin Xiang-HuaXiao Xin Su Bin Kong Shi-Yin Pan Hua Yang Yan Cheng Na An Sheng-Li Mi 2016International Journal of Ophthalmology(English edition)2016,9,3:6
16P2X7 receptor activation aggravates NADPH oxidase 2-induced oxidative stress after intracerebral hemorrhage显示文摘Oxidative stress is a crucial pathological process that contributes to secondary injury following intracerebral hemorrhage. P2X7 receptor(P2X7R), which is activated by the abnormal accumulation of extracellular ATP, plays an important role in the regulation of oxidative stress in the central nervous system, although the effects of activated P2X7R-associated oxidative stress after intracerebral hemorrhage remain unclear. Mouse models of intracerebral hemorrhage were established through the stereotactic injection of 0.075 U VII collagenase into the right basal ganglia. The results revealed that P2X7R expression peaked 24 hours after intracerebral hemorrhage, and P2X7R expressed primarily in neurons. The inhibition of P2X7R, using A438079(100 mg/kg, intraperitoneal), reduced nicotinamide adenine dinucleotide phosphate oxidase 2(NOX2) expression and malondialdehyde generation, increased superoxide dismutase and glutathione/oxidized glutathione levels, and alleviated neurological damage, brain edema, and apoptosis after intracellular hemorrhage. The P2X7R inhibitor A438079(100 mg/kg, intraperitoneal injection) inhibited the activation of extracellular signal-regulated kinase 1/2(ERK1/2) and nuclear factor kappa-B(NF-κB) after intracerebral hemorrhage. Blocking ERK1/2 activation, using the ERK1/2 inhibitor U0126(2 μg, intraventricular injection), reduced the level of NOX2-mediated oxidative stress induced by P2X7R activation after intracellular hemorrhage. Similarly, the inhibition of NF-κB, using the NF-κB inhibitor JSH-23(3.5 μg, intraventricular), reduced the level of NOX2-mediated oxidative stress induced by P2X7R activation. Finally, GSK2795039(100 mg/kg, intraperitoneal), a NOX2 antagonist, attenuated P2X7R-mediated oxidative stress, neurological damage, and brain edema after intracerebral hemorrhage. The results indicated that P2X7R activation aggravated NOX2-induced oxidative stress through the activation of the ERK1/2 and NF-κB pathways following intracerebral hemorrhage in mice. The present study was approved by the Ethics Committee of Huazhong University of Science and Technology, China(approval No. TJ-A20160805) on August 26, 2016.Hong Deng Ye Zhang Gai-Gai Li Hai-Han Yu Shuang Bai Guang-Yu Guo Wen-Liang Guo Yang Ma Jia-Hui Wang Na Liu Chao Pan Zhou-Ping Tang 2021Neural Regeneration Research2021,16,8:6
17Famitinib in combination with concurrent chemoradiotherapy in patients with locoregionally advanced nasopharyngeal carcinoma: a phase 1, open-label, dose-escalation Study显示文摘Background:Famitinib is a tyrosine kinase inhibitor against multiple targets,including vascular endothelial growth factor receptor 2/3,platelet-derived growth factor receptor,and stem cell factor receptor(c-kit).Previous studies have demonstrated anti-tumour activities of famitinib against a wide variety of advanced-stage solid cancers.We aimed to determine the safety and efficacy of famitinib with concurrent chemoradiotherapy(CCRT)in patients with locoregionally advanced nasopharyngeal carcinoma(NPC).We also evaluated the feasibility of contrast-enhanced ultrasound(D-CEUS)as a predictor of early tumour response to famitinib and to correlate functional parameters with clinical efficacy.Methods:The trial was conducted in subjects with stage III or IVa-b NPC using a 3+3 design of escalating fami-tinib doses.Briefly,subjects received 2 weeks of famitinib monotherapy followed by 7 weeks of famitinib plus CCRT.D-CEUS of the neck lymph nodes was performed at day 0,8 and 15 after famitinib was administered before starting concurrent chemoradiotherapy.End points included safety,tolerability and anti-tumour activity.Results:Twenty patients were enrolled(six each for 12.5,16.5 and 20 mg and two for 25 mg).Two patients in the 25 mg cohort developed dose-limiting toxicities,including grade 4 thrombocytopenia and grade 3 hypertension.The most common grade 3/4 adverse events were leukopenia,neutropenia and radiation mucositis.D-CEUS tests showed that more than 60%of patients achieved a perfusion parameter response after 2 weeks taking famitinib alone,and the parameter response was associated with disease improvement.In the famitinib monotherapy stage,three patients(15%)showed partial responses.The complete response rate was 65%at the completion of treatment and 95%3 months after the treatment ended.After a median follow-up of 44 months,the 3-year progression-free survival(PFS)and distant metastasis-free survival were 70%and 75%,respectively.Subjects with a decrease of perfusion parameter response,such as peak intensity decreased at least 30%after 1 week of famitinib treatment,had higher 3-year PFS(90.9%vs.44.4%,95%CI 73.7%-100%vs.11.9%-76.9%,P<0.001)than those with an increase or a reduction of less than 30%.Conclusions:The recommended famitinib dose for phase II trial is 20 mg with CCRT for patients with local advanced NPC.D-CEUS is a reliable and early measure of efficacy for famitinib therapies.Further investigation is required to confirm the effects of famitinib plus chemoradiotherapy.Qiuyan Chen Linquan Tang Na Liu Feng Han Ling Guo Shanshan Guo Jianwei Wang Huai Liu Yanfang Ye Lu Zhang Liting Liu Pan Wang Yingqin Li Qingmei He Xiaoqun Yang Qingnan Tang Yang Li YuJing Liang XueSong Sun Chuanmiao Xie Yunxian Mo Ying Guo Rui Sun Haoyuan Mo Kajia Cao Xiang Guo Musheng Zeng Haiqiang Mai Jun Ma 2018Cancer Communications2018,38,1:6
18Anxiety symptoms in patients with Mayer-Rokitansky-Küster-Hauser syndrome:a cross-sectional study显示文摘Background:As a congenital malformation that results in infertility and an inability to have vaginal intercourse,Mayer-Rokitansky-Küster-Hauser(MRKH)syndrome places a considerable psychological burden on patients,which results in anxiety symptoms.However,only single case studies or a few small to medium-sized cross-sectional studies were identified to focus on anxiety symptoms in MRKH patients.Thus,the aim of this study was to explore the status of anxiety symptoms and the related factors in patients with MRKH syndrome.Methods:This cross-sectional study involving 141 patients with MRKH syndrome and 178 healthy women was conducted from January 2018 to December 2018.All participants were required to complete a demographic questionnaire and the Generalized Anxiety Disorder 7-item scale(GAD-7),Patient Health Questionnaire-9,Eysenck Personality Questionnaire-Revised,Short Scale for Chinese,and Chinese Version of the Female Sexual Function Index.The main outcome was the anxiety symptoms measured by the GAD-7.Main outcome was compared between the MRKH syndrome group and the healthy control group.Then,we explored the related factors by comparing patients with and without anxiety symptoms.Results:Of the respondents,24.1%experienced moderate to severe anxiety symptoms.Patients with MRKH syndrome manifested more severe anxiety symptoms than healthy women.Negative self-evaluation of femininity(odds ratio[OR]2.706,95%confidence interval[CI]1.010-7.247),neurotic personality traits(OR 1.100,95%CI 1.029-1.175),and coexisting depressive symptoms(OR 4.422,95%CI 1.498-13.049)were more prevalent in anxious patients.Conclusion:The findings stress the importance of anxiety symptom screening in MRKH patients and identify patients at risk of anxiety symptoms,providing a possible basis for future intervention.Shuang Song Na Chen Yan-Ping Duan Jia Kang Shan Deng Hong-Xin Pan Lan Zhu 2020Chinese Medical Journal2020,,4:6
19Ti-Zr-Be-Fe quaternary bulk metallic glasses designed by Fe alloying显示文摘A series of Ti-Zr-Be-Fe bulk metallic glasses(BMGs)with good glass-forming ability(GFA)and high specific strength have been developed.With different alloying routes and content of Fe,it is found that these alloys exhibit different GFA and mechanical properties.The effects of Fe addition on the GFA and mechanical properties of Ti-Zr-Be alloy are systemically investigated.The possible mechanisms for the improvement or damage to the GFA by addition of Fe can be interpreted in view of the mixing enthalpy,atomic size differences and electronegativity differences of the alloys,while the mechanical properties strongly depend on the Poisson’s ratio and free volume concentration.The experimental results also show that alloying technology is an effective method to improve the GFA and mechanical properties of Ti-Zr-Be glassy alloy.GONG Pan WANG Xin SHAO Yang CHEN Na YAO KeFu 2013Science China(Physics,Mechanics & Astronomy)2013,56,11:6
20Amino acids 89-96 of Salmonella typhimunum Tlagell=n represent the major domain responsible for TLR5-independent adjuvanticity in the humoral immune response显示文摘Lei Zhang Zhiming Pan Xilong Kang Yun Yang Heekap Kang Na Zhang James M Rosati Xinan Jiao 2015Cellular & Molecular Immunology2015,12,5:6
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