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1Apoptosis and its relationship with cell proliferation,p53,Waf1p21,bcl-2 and c-mycin esophageal carcinogenesis studied with a high-risk population in northern China显示文摘Apoptosisanditsrelationshipwithcelproliferation,p53,Waf1p21,bcl2andcmycinesophagealcarcinogenesisstudiedwithahighriskpopul...WANG LiDong1, ZHOU Qi1, WEI JunPing1, YANG WanCai1, ZHAO Xin1, WANG LiXia1, ZOU Jian Xiang1, GAO ShanShan1, LI YongXin1 and YANG C.S.2Keywords esophageal neoplasms apoptosis precancerous lesions Waf1 p21 gene p53 1998World Journal of Gastroenterology1998,4,4:295
2Performance value of high risk factors in colorectal cancer screening in China显示文摘AIM:To analyze the performance value of high risk factors in population-based colorectal cancer(CRC) screening in China.METHODS:We compared the performance value of the immunochemical fecal occult blood test(iFOBT) and other high risk factors questionnaire in a population sample of 13 214 community residents who completed both the iFOBT and questionnaire investigation.Patients with either a positive iFOBT and/or questionnaire were regarded as a high risk population and those eligible were asked to undergo colonoscopy.RESULTS:The iFOBT had the highest positive predictive value and negative predictive value in screening for advanced neoplasia.The iFOBT had the highest sensitivity,lowest number of extra false positive results associated with the detection of one extra abnormality for screening advanced neoplasias and adenomas.A history of chronic cholecystitis or cholecystectomy,chronic appendicitis or appendectomy,and chronic diarrhea also had a higher sensitivity than a history of adenomatous polyps in screening for advanced neoplasias and adenomas.The sensitivity of a history of chronic cholecystitis or cholecystectomy was highest among the 10 high risk factors in screening for nonadenomatous polyps.A history of chronic appendicitis or appendectomy,chronic constipation,chronic diarrhea,mucous and bloody stool,CRC in first degree relatives,malignant tumor and a positive iFOBT also had higher sensitivities than a history of adenomas polyps in screening for non-adenomatous polyps.Except for a history of malignant tumor in screening for non-adenomatous polyps,the gain in sensitivity was associated with an increase in extra false positive results associated with the detection of one extra abnormality.CONCLUSION:The iFOBT may be the best marker for screening for advanced neoplasias and adenomas.Some unique high risk factors may play an important role in CRC screening in China.Wen Meng Shan-Rong Cai Lun Zhou Qi Dong Shu Zheng Su-Zhan Zhang 2009World Journal of Gastroenterology2009,15,48:41
3Pathological changes at early stage of multiple organ injury in a rat model of severe acute pancreatitis显示文摘BACKGROUND:Severe acute pancreatitis (SAP) is a commonly seen acute abdominal syndrome characterized by sudden onset,rapid progression and high mortality rate.The damage in peripheral organs may be more severe than that in the pancreas,and can even lead to multiple organ dysfunction.It is critical to recognize early pathological changes in multiple organs.This study aimed to assess the early pathological features of damaged organs in a rat model of SAP.METHODS:Thirty clean grade healthy male Sprague-Dawley rats weighing 250-300 g were randomly divided into a model control group (n=15) and a sham-operated group (n=15).The SAP rat model was induced by sodium taurocholate.Samples of blood and from multiple organs were collected 3 hours after operation.We assessed the levels of IL-6,TNF-α,PLA2,NO,ET-1,MDA,amylases and endotoxin in blood and observed the early pathological changes in multiple damaged organs.RESULTS:Levels of IL-6,TNF-α,PLA2,NO,ET-1 and MDA in serum and of amylase and endotoxin in plasma of the model control group rats were significantly higher than those of the sham-operated group (P<0.01).Different degrees of pathological change were observed in multiple damaged organs.CONCLUSION:Multiple organ injury may occur at the early stage of SAP in rats.Zhang, Xi-Ping Zhang, Jie Ma, Mei-Li Cai, Yang Xu, Ru-Jun Xie, Qi Jiang, Xin-Ge Ye, Qian 2010Hepatobiliary & Pancreatic Diseases International2010,9,1:33
4Reoperation of biliary tract by laparoscopy:Experiences with 39 cases显示文摘AIM:To evaluate the safety and feasibility of biliary tract reoperation by laparoscopy for the patients with retained or recurrent stones who failed in endoscopic sphincterotomy. METHODS:A retrospective analysis of data obtained from attempted laparoscopic reoperation for 39 patients in a single institution was performed, examining open conversion rates, operative times, complications, and hospital stay. RESULTS:Out of the 39 cases, 38 (97%) completed laparoscopy, 1 required conversion to open operation because of difficulty in exposing the common bile duct. The mean operative time was 135 min. The mean post-operative hospital stay was 4 d. Procedures included laparoscopic residual gallbladder resection in 3 cases, laparoscopic common bile duct exploration and primary duct closure at choledochotomy in 13 cases, and laparoscopic common bile duct exploration and choledochotomy with T tube drainage in 22 cases. Duodenal perforation occurred in 1 case during dissection and was repaired laparoscopically. Retained stones were found in 2 cases. Postoperative asymptomatic hyperamlasemia occurred in 3 cases. There were no complications due to port placement, postoperative bleeding, bile or bowel leakage and mortality. No recurrence or formation of duct stricture was observed during a mean follow-up period of 18 mo. CONCLUSION:Laparoscopic biliary tract reoperation is safe and feasible if it is performed by experiencedlaparoscopic surgeons, and is an alternative choice for patients with choledocholithiasis who fail in endoscopic sphincterectomy.Li-Bo Li Xiu-Jun Cai Yi-Ping Mou Qi wei 2008World Journal of Gastroenterology2008,14,19:24
5A Simple and Rapid Colloidal Gold-based Immunochromatogarpic Strip Test for Detection of FMDV Serotype A显示文摘A sandwich format immunochromatographic assay for detecting foot-and-mouth disease virus (FMDV) serotypes was developed. In this rapid test,affinity purified polyclonal antibodies from Guinea pigs which were immunized with sucking-mouse adapted FMD virus (A/AV88(L) strain) were conjugated to colloidal gold beads and used as the capture antibody,and affinity purified polyclonal antibodies from rabbits which were immunized with cell-culture adapted FMD virus (A/CHA/09 strain) were used as detector antibody. On the nitrocellulose membrane of the immunochromatographic strip,the capture antibody was laid on a sample pad,the detector antibody was printed at the test line(T) and goat anti-guinea pigs IgG antibodies were immobilized to the control line(C). The lower detection limit of the test for a FMDV 146S antigen is 11.7ng/ml as determined in serial tests after the strip device was assembled and the assay condition optimization. No cross reactions were found with FMDV serotype C,Swine vesicular disease (SVD),Vesicular stomatiti svirus (VSV) and vesicular exanthema of swine virus (VES) viral antigens with this rapid test. Clinically,the diagnostic sensitivity of this test for FMDV serotypes A was 88.7% which is as same as an indirect-sandwich ELISA. The specificity of this strip test was 98.2% and is comparable to the 98.7% obtained with indirect-sandwich ELISA. This rapid strip test is simple,easy and fast for clinical testing on field sites; no special instruments and skills are required,and the result can be obtained within 15 min. To our knowledge,this is the first rapid immunochromatogarpic assay for serotype A of FMDV.Tao Jiang Zhong Liang Wei-wei Ren Juan Chen Xiao-ying Zhi Guang-yu Qi Xiang-tao Liu Xue-peng Cai 2011Virologica Sinica2011,26,1:22
6Generation of haploid embryonic stem cells from Macaca fascicularis monkey parthenotes显示文摘在从经由单性生殖和男性单性生殖的老鼠的胚胎的干细胞(haESCs ) 启用了在修改基因的动物的哺乳动物的房间和代的基因屏蔽的 haploid 的推导的最近的成功。然而, haESCs 是否能从首领被导出,仍然保持未知。这里,我们从 Macaca fascicularis 猴子的单性生殖的胚囊报导 haESCs 的推导。这些房间,作为 PG-haESCs 称为,是 pluripotent 并且能在 vitro 或在 vivo 区分到三胚胎的细菌层的房间。有趣地,一根猴子 PG-haESC 线(MPH1 ) 的 haploidy 与另一个(MPH2 ) 的相比是更稳定的,作为没有排序的激活荧光的房间(FACS ) ,由 haploid 房间的存在出现超过 140 天 haploid 房间的丰富。重要地,转基因的猴子 PG-haESC 线能被 lentivirus- 和 piggyBac 产生调停 transposon 的基因转移。而且,基因屏蔽在猴子 PG-haESCs 是可行的。我们的结果证明 PG-haESCs 能从猴子被产生,提供为在首领的基因分析的一个理想的工具。Hui Yang Zhen Liu Yu Ma Cuiqing Zhong Qi Yin Chikai Zhou Linyu Shi Yijun Cai Hanzhi Zhao Hui Wang Fan Tang Yan Wang Chenchen Zhang Xin-yuan Liu Dongmei Lai Ying Jin Qiang Sun Jinsong Li 2013Cell Research2013,23,10:22
7MADS-Box Transcription Factor AGL21 Regulates Lateral Root Development and Responds to Multiple External and Physiological Signals显示文摘植物根系统形态学被各种各样的环境暗示戏剧性地影响。到环境限制的根系统建筑学的改编,主要取决于侧面的根的形成和生长,是一个重要农学的特点。侧面的根开发被与内在的发信号的小径仔细协调的外部信号调整。疯盒子的抄写因素是到 flowering 和花开发的转变的已知的关键管理者。然而,他们在根开发的功能仍然糟糕被理解。这里,我们报导那 AGL21, AGL17-clade 疯盒子的基因,在侧面的根开发起一个关键作用。AGL21 高度在根被表示,特别地在根中央柱体和侧面的根 primordia。当 agl21 异种显示出损害的侧面的根开发时, AGL21 overexpression 植物生产了更多和更长侧面的根,特别在氮缺乏的条件下面。AGL21 被许多植物荷尔蒙和环境压力导致,建议在响应各种各样的信号的根系统粘性的这基因的一个函数。而且, AGL21 断然被发现由提高本地植物生长素生合成,因此刺激的侧面的根开始和生长在侧面的根 primordia 和侧面的根调整植物生长素累积。我们建议 AGL21 可以涉及各种各样的环境、生理的调停信号的侧面的根开发和生长。Lin-Hui Yu Zi-Qing Miao Guo-Feng Qi Jie Wu Xiao-Teng Cai Jie-Li Mao Cheng-Bin Xiang 2014Molecular Plant2014,7,11:21
8Current 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
9One-step generation of complete gene knockout mice and monkeys by CRISPR/Cas9-mediated gene editing with multiple sgRNAs显示文摘CRISPR/Cas9 系统是一个有效编辑基因的方法,但是编辑基因的动物的多数显示出 mosaicism,与编辑仅仅在房间的部分发生。这里,我们证明那单个基因或多重基因能被 Cas9 mRNA 和多重邻近的单个指南的 RNA 的 zygotic 注射完全在老鼠和猴子胚胎击倒(spaced 10-200 bp 分开) 指向仅仅一把单个钥匙每基因的 exon。个别地在 Y 染色体上跟随八基因的指向的删除的 F0 老鼠的 Phenotypic 分析在产生猛烈老鼠表明了这条途径的坚韧性。重要地,这条途径在高效率交付完全的基因大美人(Arntl 上的 100% 并且 91% 在 Prrt2 上) 在猴子胚胎。最后,我们能在一个单个步骤产生一只完全的 Prrt2 猛烈猴子,表明在很快建立编辑基因的猴子模型的这条途径的实用性。Erwei Zuo Yi-Jun Cai Kui Li Yu Wei Bang-An Wang Yidi Sun Zhen Liu Jiwei Liu Xinde Hu Wei Wei Xiaona Huo Linyu Shi Cheng Tang Dan Liang Yan Wang Yan-Hong Nie Chen-Chen Zhang Xuan Yao Xing Wang Changyang Zhou Wenqin Ying Qifang Wang Ren-Chao Chen Qi Shen Guo-Liang Xu Jinsong Li Qiang Sun Zhi-Qi Xiong Hui Yang 2017Cell Research2017,27,7:21
10Gut microbiota contributes to the distinction between two traditional Chinese medicine syndromes of ulcerative colitis显示文摘BACKGROUND Ulcerative colitis(UC)is considered to be closely associated with alteration of intestinal microorganisms.According to the traditional Chinese medicine(TCM)theory,UC can be divided into two disease syndromes called Pi-Xu-Shi-Yun(PXSY)and Da-Chang-Shi-Re(DCSR).The relationships among gut microbiota,TCM syndromes,and UC pathogenesis have not been well investigated.AIM To investigate the role of gut microbiota in UC and the distinction of microbiota dysbiosis between PXSY and DCSR syndromes.METHODS From May 2015 to February 2016,UC patients presenting to LongHua Hospital who met the established inclusion and exclusion criteria were enrolled in this retrospective study.Fresh stool specimens of UC patients with PXSY or DCSR were collected.The feces of the control group came from the health examination population of Longhua Hospital.The composition of gut bacterial communities in stool samples was determined by the pyrosequencing of 16S ribosomal RNA.The high-throughput sequencing reads were processed with QIIME,and biological functions were predicted using Phylogenetic Investigation of Communities by Reconstruction of Unobserved States.RESULTS The composition of gut bacterial communities in 93 stool samples(30 healthy controls,32 patients with PXSY syndrome,and 31 patients with DCSR syndrome)was determined by the pyrosequencing of 16S ribosomal RNA.Beta diversity showed that the composition of the microbiota was different among the three groups.At the family level,Porphyromonadaceae,Rikeneliaceae,and Lachnospiraceae significantly decreased while Enterococcus,Streptococcus,and other potential pathogens significantly increased in UC patients compared to healthy subjects.At the genus level,Parabacteroides,Dorea,and Ruminococcus decreased while Faeca-libacterium showed increased abundance in UC compared to healthy controls.Five differential taxa were identified between PXSY and DCSR syndromes.At the genus level,a significantly increased abundance of Streptococcus was observed in DCSR patients,while Lachnoclostridium increased in PXSY patients.The differential functional pathways of the gut microbiome between the PXSY and DCSR groups mainly included lipid metabolism,immunity,and the metabolism of polypeptides.CONCLUSION Our study suggests that the gut microbiota contributes to the distinction between the two TCM syndromes of UC.Ya-Li Zhang Li-Ting Cai Jun-Yi Qi Yun-Zheng Lin Yan-Cheng Dai Na Jiao You-Lan Chen Lie Zheng Bei-Bei Wang Li-Xin Zhu Zhi-Peng Tang Rui-Xin Zhu 2019World Journal of Gastroenterology2019,25,25:19
11Memory materials and devices:From concept to application显示文摘Memory cells have always been an important element of information technology.With emerging technologies like big data and cloud computing,the scale and complexity of data storage has reached an unprecedented peak with a much higher requirement for memory technology.As is well known,better data storage is mostly achieved by miniaturization.However,as the size of the memory device is reduced,a series of problems,such as drain gate-induced leakage,greatly hinder the performance of memory units.To meet the increasing demands of information technology,novel and high-performance memory is urgently needed.Fortunately,emerging memory technologies are expected to improve memory performance and drive the information revolution.This review will focus on the progress of several emerging memory technologies,including two-dimensional material-based memories,resistance random access memory(RRAM),magnetic random access memory(MRAM),and phasechange random access memory(PCRAM).Advantages,mechanisms,and applications of these diverse memory technologies will be discussed in this review.Zhenhan Zhang Zongwei Wang Tuo Shi Chong Bi Feng Rao Yimao Cai Qi Liu Huaqiang Wu Peng Zhou 2020InfoMat2020,2,2:15
12Integrative lipidomic and transcriptomic study unravels the therapeutic effects of saikosaponins A and D on non-alcoholic fatty liver disease显示文摘Nonalcoholic fatty liver disease(NAFLD)has become one of the most prominent causes of chronic liver diseases and malignancies.However,few therapy has been approved.Radix Bupleuri(RB)is the most frequently used herbal medicine for the treatment of liver diseases.In the current study,we aim to systemically evaluate the therapeutic effects of saikosaponin A(SSa)and saikosaponin D(SSd),the major bioactive monomers in RB,against NAFLD and to investigate the underlying mechanisms.Our results demonstrated that both SSa and SSd improved diet-induced NAFLD.Integrative lipidomic and transcriptomic analysis revealed that SSa and SSd modulated glycerolipid metabolism by regulating related genes,like Lipe and Lipg.SSd profoundly suppressed the fatty acid biosynthesis by downregulating Fasn and Acaca expression and promoted fatty acid degradation by inducing Acox1 and Cpt1 a expression.Bioinformatic analysis further predicted the implication of master transcription factors,including peroxisome proliferator-activated receptor alpha(PPARα),in the protective effects of SSa and SSd.These results were further confirmed in vitro in mouse primary hepatocytes.In summary,our study uncoded the complicated mechanisms underlying the promising anti-steatosis activities of saikosaponins(SSs),and provided critical evidence inspiring the discovery of innovative therapies based on SSa and SSd for the treatment of NAFLD and related complications.Xiaojiaoyang Li Junde Ge Yajing Li Yajie Cai Qi Zheng Nana Huang Yiqing Gu Qi Han Yunqian Li Rong Sun Runping Liu 2021Acta Pharmaceutica Sinica B2021,11,11:15
13Changes of p53 and Waf1p21 and cell proliferation in esophageal carcinogenesis显示文摘Changesofp53andWaf1p21andcelproliferationinesophagealcarcinogenesisWANGLiDong1,YANGWanCai1,ZHOUQi1,XINGYing1,JIAYunYing2a...WANG Li Dong 1, YANG Wan Cai 1, ZHOU Qi 1, XING Ying 1,JIA Yun Ying 2 and ZHAO Xin 1 1997World Journal of Gastroenterology1997,3,2:15
14Influence of dexamethasone on mesenteric lymph node of rats with severe acute pancreatitis显示文摘AIM: To study the influence and mechanisms of dexamethasone on mesenteric lymph node of rats with severe acute pancreatitis (SAP). METHODS: The SAP rats were assigned to model, treated or sham-operated groups. The mortality, pathological changes of mesenteric lymph nodes, expression levels of NF-kB, P-selectin, Bax, Bcl-2 and caspase-3 protein and changes in apoptotic indexes in lymph nodes were observed at 3, 6 and 12 h after operation. The blood levels of endotoxin, superoxide dismutase (SOD), malondialdehyde (MDA), and endothelin-1 (ET-1) in blood were determined. RESULTS: SOD content, expression of Bax protein and apoptotic index were significantly higher in the treated group than in the model group at different time points (P < 0.05 or P < 0.01). Other blood-detecting indexes and histopathological scores of mesenteric lymphnodes were lower in the treated than in the model group (P < 0.05, P < 0.01 or P < 0.01). NF-kB protein expression was negative in all groups. Comparing P-selectin and caspase-3 expression levels among all three groups, there was no marked difference between the model and treated group. CONCLUSION: Dexamethasone can protect mesen-teric lymph nodes. The mechanism may be by reducing the content of inflammatory mediators in the blood and inducing lymphocyte apoptosis.Xi-Ping Zhang Hong-Miao Xu Yi-Yu Jiang Shuo Yu Yang Cai Bei Lu Qi Xie Tong-Fa Ju 2008World Journal of Gastroenterology2008,14,22:14
15Study on protecting effects of Baicalin and Octreotide on hepatic injury in rats with severe acute pancreatitis显示文摘AIM: To investigate the protective effects and mechanisms of Baicalin and Octreotide on hepatic injury in rats with severe acute pancreatitis (SAP). METHODS: The SAP rat models were prepared and randomly assigned to the model control group, Baicalin treated group, and Octreotide treated group while other healthy rats were assigned to the sham-operated group. Rat mortality, levels of ALT, AST, liver and pancreas pathological changes in all groups were observed at 3, 6 and 12 h after operation. Tissue microarray (TMA) sections of hepatic tissue were prepared to observe expression levels of Bax, Bcl-2 protein and Caspase-3, and changes of apoptotic indexes.RESULTS: Rat survival at 12 h, expression levels of Bax, Caspase-3 protein and apoptotic indexes of liver were all significantly higher in treated groups than in model control group. While the liver and pancreas pathological scores, contents of ALT, AST, and expression levels of Bcl-2 protein were all lower in treated groups than in the model control group. CONCLUSION: Both Baicalin and Octreotide can protect rats with SAP by decreasing the contents of ALT, AST and expression levels of Bcl-2 protein, and improving the expression levels of Bax protein, Caspase-3 protein, and inducing apoptosis.Xi-Ping Zhang Guang-Hua Feng Wei Zhu Yang Cai Qi-Jun Yang Tong-Fa Ju Qi xie Wen-Qin Yuan Jie Zhang Zheng Ren 2008World Journal of Gastroenterology2008,14,42:13
16Prognostic factors for late mortality after liver transplantation for benign end-stage liver disease显示文摘背景正在增加在研究在这些 patients.However 的早死亡上集中了的肝 transplantation.Many 以后熬过超过一年的病人的数字,影响长期的幸存的因素不是充分, understood.This 学习试图评估预言长期的幸存的预示的因素并且为改进为良性的结束阶段肝 diseases.MethodsZHANG Ying-cai ZHANG Qi LI Hua ZHANG Jian WANG Gen-shu XU Chi YI Shu-hong YI Hui-min CAI Chang-jie LU Min-qiang YANG Yang CHEN Gui-hua 2011Chinese Medical Journal2011,,24:13
17Purification and characterization of keratinase from a new Bacillus subtilis strain显示文摘The aim of this study was to purify and characterize a keratinase produced by a new isolated Bacillus subtilis KD-N2 strain. The keratinase produced by the isolate was purified using ammonium sulphate precipitation, Sephadex G-75 and DEAE (diethylaminoethyl)-Sepharose chromatographic techniques. The purified enzyme was shown to have a molecular mass of 30.5 kDa, as determined by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) analysis. The optimum pH at 50 °C was 8.5 and the optimum temperature at pH 8.5 was 55 °C. The keratinase was partially inactivated by some metal ions, organic solvents and serine protease inhibitor phenylmethanesulfonyl fluoride (PMSF). Sodium dodecyl sulfate (SDS) and ethylene diamine tetraacetic acid (EDTA) had positive effect on the keratinase activity. Reducing agents including dithiothreitol (DTT), mercaptoethanol, L-cysteine, sodium sulphite, as well as chemicals of SDS, ammonium sulfamate and dimethylsulfoxide (DMSO) stimulated the enzyme activity upon a feather meal substrate. Besides feather keratin, the enzyme is active upon the soluble proteins ovalbumin, bovine serum albumin (BSA), casein and insoluble ones as sheep wool and human hair. Calf hair, silk and collagen could not be hydrolyzed by the keratinase.Cheng-gang CAI Ji-shuang CHEN Jiong-jiong QI Yun YIN Xiao-dong ZHENG 2008浙江中西医结合杂志2008,18,9:13
18二期尿道成型术更适合于需要横断尿道板并伴有严重弯曲畸形的近段型尿道下裂显示文摘对于伴有严重阴茎弯曲的尿道下裂,横断尿道板后是选择一期还是二期手术仍存在争议。这项回顾性研究比较评价了这两种方法的优劣。本研究共收集66例伴有严重阴茎弯曲的近端型尿道下裂的患者,根据手术方式分成两组,其中32例行一期手术(Duckett),34例行二期手术。一期和二期手术组的中位年龄分别为7.5岁和11.0岁,中位随访时间分别为28.5个月和35个月。所有患者术后尿道外口均位于龟头顶端。随访期间无患者出现阴茎弯曲复发,患者及其家属对阴茎的长度和外观均满意。术后两组各有8例患者出现并发症,两组间并发症率无统计学差异。一期手术尿道狭窄的远期并发症率高j(18.75%1,JO%)。在一期手术组中,青春期前患者的并发症率显著低于青春期后患者(10.52%w46.15%3。中期随访结果提示,横断尿道板可有效矫正近端型尿道下裂合并的重度阴茎弯曲。考虑到一期手术组中较高的尿道狭窄发生率,本文认为分期手术更适合伴有严重阴茎弯曲需要横断尿道板的近端型尿道下裂。Da-Chao Zheng Hai-Jun Yao Zhi-Kang Cai Jun Da Qi Chen Yan-Bo Chen Ke Zhang Ming-Xi Xu Mu-Jun Lu Zhong Wang 2015Asian Journal of Andrology2015,17,1:13
19Cotton-derived oxygen/sulfur co-doped hard carbon as advanced anode material for potassium-ion batteries显示文摘Hard carbon is regarded as promising anode materials for potassium-ion batteries(KIBs)owing to their low price and easy availability.However,the limited rate capability still needs to be improved.Herein,we demonstrate the fabrication of oxygen/sulfur co-doped hard carbon through a facile hydrolyzationsulfuration process of skimmed cotton.The simultaneous dopants significantly improve potassium ion diffusion rate.When served as the anode for KIBs,this hydrolyzed hard carbon delivered a high reversible capacity(409 mAh/g at 0.1 A/g),superior rate capability(135 mAh/g at 2 A/g)and excellent cyclability(about 120 mAh/g overt 500 cycles at 2 A/g).This work provides a facile strategy to prepare low-cost doped-hard carbon with superior potassium storage property.Baolin Xu Shihan Qi Fang Li Xiaoxin Peng Jinfeng Cai Jiaojiao Liang Jianmin Ma 2020Chinese Chemical Letters2020,31,1:12
20Elimination of senescent cells byβ-galactosidase-targeted prodrug attenuates inflammation and restores physical function in aged mice显示文摘Cellular senescence,a persistent state of cell cycle arrest,accumulates in aged organisms,contributes to tissue dysfunction,and drives age-related phenotypes.The clearance of senescent cells is expected to decrease chronic,low-grade inflammation and improve tissue repair capacity,thus attenuating the decline of physical function in aged organisms.However,selective and effective clearance of senescent cells of different cell types has proven challenging.Herein,we developed a prodrug strategy to design a new compound based on the increased activity of lysosomalβ-galactosidase(β-gal),a primary characteristic of senescent cells.Our prodrug SSK1 is specifically activated byβ-gal and eliminates mouse and human senescent cells independently of senescence inducers and cell types.In aged mice,our compound effectively cleared senescent cells in different tissues,decreased the senescence-and age-associated gene signatures,attenuated low-grade local and systemic inflammation,and restored physical function.Our results demonstrate that lysosomalβ-gal can be effectively leveraged to selectively eliminate senescent cells,providing a novel strategy to develop anti-aging interventions.Yusheng Cai Huanhuan Zhou Yinhua Zhu Qi Sun Yin Ji Anqi Xue Yuting Wang Wenhan Chen Xiaojie Yu Longteng Wang Han Chen Cheng Li Tuoping Luo Hongkui Deng 2020Cell Research2020,30,7:12
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