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1China Stroke Statistics 2019:A Report From the National Center for Healthcare Quality Management in Neurological Diseases,China National Clinical Research Center for Neurological Diseases,the Chinese Stroke Association,National Center for Chronic and Non-communicable Disease Control and Prevention,Chinese Center for Disease Control and Prevention and Institute for Global Neuroscience and Stroke Collaborations显示文摘China faces the greatest challenge from stroke in the world.The death rate for cerebrovascular diseases in China was 149.49 per 100000,accounting for 1.57 million deaths in 2018.It ranked third among the leading causes of death behind malignant tumours and heart disease.The age-standardised prevalence and incidence of stroke in 2013 were 1114.8 per 100000 population and 246.8 per 100000 person-years,respectively.According to the Global Burden of Disease Study 2017,the years of life lost(YLLs)per 100000 population for stroke increased by 14.6%;YLLs due to stroke rose from third highest among all causes in 1990 to the highest in 2017.The absolute numbers and rates per 100000 population for all-age disability-adjusted life years(DALYs)for stroke increased substantially between 1990 and 2017,and stroke was the leading cause of all-age DALYs in 2017.The main contributors to cerebrovascular diseases include behavioural risk factors(smoking and alcohol use)and pre-existing conditions(hypertension,diabetes mellitus,dyslipidaemia and atrial fibrillation(AF)).The most prevalent risk factors among stroke survivors were hypertension(63.0%-84.2%)and smoking(31.7%-47.6%).The least prevalent was AF(2.7%-7.4%).The prevalences for major risk factors for stroke are high and most have increased over time.Based on the latest national epidemiological data,26.6%of adults aged≥15 years(307.6 million adults)smoked tobacco products.For those aged≥18 years,age-adjusted prevalence of hypertension was 25.2%;adjusted prevalence of hypercholesterolaemia was 5.8%;and the standardised prevalence of diabetes was 10.9%.For those aged≥40 years,the standardised prevalence of AF was 2.31%.Data from the Hospital Quality Monitoring System showed that 3010204 inpatients with stroke were admitted to 1853 tertiary care hospitals during 2018.Of those,2466785(81.9%)were ischaemic strokes(ISs);447609(14.9%)were intracerebral haemorrhages(ICHs);and 95810(3.2%)were subarachnoid haemorrhages(SAHs).The average age of patients admitted was 66 years old,and nearly 60%were male.A total of 1555(0.1%),2774(0.6%)and 1347(1.4%)paediatric strokes(age<18 years)were identified among IS,ICH and SAH,respectively.Over one-third(1063892(35.3%))of the patients were covered by urban resident basic medical insurance,followed by urban employee basic medical insurance(699513(23.2%))and new rural cooperative medical schema(489361(16.3%)).The leading risk factor was hypertension(67.4%for IS,77.2%for ICH and 49.1%for SAH),and the leading comorbidity was pneumonia or pulmonary infection(10.1%for IS,31.4%for ICH and 25.2%for SAH).In-hospital death/discharge against medical advice rate was 8.3%for stroke inpatients,ranging from 5.8%for IS to 19.5%for ICH.The median and IQR of length of stay was 10.0(7.0-14.0)days,ranging from 10.0(7.0-13.0)in IS to 14.0(8.0-22.0)in SAH.Data from the Chinese Stroke Center Alliance demonstrated that the composite scores of guideline-recommended key performance indicators for patients with IS,ICH and SAH were 0.77±0.21,0.72±0.28 and 0.59±0.32,respectively.Yong-Jun Wang Zi-Xiao Li Hong-Qiu Gu Yi Zhai Yong Jiang Xing-Quan Zhao Yi-Long Wang Xin Yang Chun-Juan Wang Xia Meng Hao Li Li-Ping Liu Jing Jing Jing Wu An-Ding Xu Qiang Dong David Wang Ji-Zong Zhao On behalf of China Stroke Statistics 2019 Writing Committee 2020Stroke & Vascular Neurology2020,5,3:181
2Wnt/b-catenin signaling plays an ever-expanding role in stem cell self-renewal,tumorigenesis and cancer chemoresistance显示文摘Wnt signaling transduces evolutionarily conserved pathways which play important roles in initiating and regulating a diverse range of cellular activities,including cell proliferation,calcium homeostasis,and cell polarity.The role of Wnt signaling in controlling cell proliferation and stem cell self-renewal is primarily carried out through the canonical pathway,which is the best-characterized the multiple Wnt signaling branches.The past 10 years has seen a rapid expansion in our understanding of the complexity of this pathway,as many new components of Wnt signaling have been identified and linked to signaling regulation,stem cell functions,and adult tissue homeostasis.Additionally,a substantial body of evidence links Wnt signaling to tumorigenesis of cancer types and implicates it in the development of cancer drug resistance.Thus,a better understanding of the mechanisms by which dysregulation of Wnt signaling precedes the development and progression of human cancer may hasten the development of pathway inhibitors to augment current therapy.This review summarizes and synthesizes our current knowledge of the canonical Wnt pathway in development and disease.We begin with an overview of the components of the canonical Wnt signaling pathway and delve into the role this pathway has been shown to play in stemness,tumorigenesis,and cancer drug resistance.Ultimately,we hope to present an organized collection of evidence implicating Wnt signaling in tumorigenesis and chemoresistance to facilitate the pursuit of Wnt pathway modulators that may improve outcomes of cancers in which Wnt signaling contributes to aggressive disease and/or treatment resistance.Maryam K.Mohammed Connie Shao Jing Wang Qiang Wei Xin Wang Zachary Collier Shengli Tang Hao Liu Fugui Zhang Jiayi Huang Dan Guo Minpeng Lu Feng Liu Jianxiang Liu Chao Ma Lewis L.Shi Aravind Athiviraham Tong-Chuan He Michael J.Lee 2016Genes & Diseases2016,3,1:70
3Artificial intelligence in healthcare:past,present and future显示文摘Artificial intelligence(AI)aims to mimic human cognitive functions.It is bringing a paradigm shift to healthcare,powered by increasing availability of healthcare data and rapid progress of analytics techniques.We survey the current status of AI applications in healthcare and discuss its future.AI can be applied to various types of healthcare data(structured and unstructured).Popular AI techniques include machine learning methods for structured data,such as the classical support vector machine and neural network,and the modern deep learning,as well as natural language processing for unstructured data.Major disease areas that use AI tools include cancer,neurology and cardiology.We then review in more details the AI applications in stroke,in the three major areas of early detection and diagnosis,treatment,as well as outcome prediction and prognosis evaluation.We conclude with discussion about pioneer AI systems,such as IBM Watson,and hurdles for real-life deployment of AI.Fei Jiang Yong Jiang Hui Zhi Yi Dong Hao Li Sufeng Ma Yilong Wang Qiang Dong Haipeng Shen Yongjun Wang 2017Stroke & Vascular Neurology2017,2,4:76
4Anisotropic coding metamaterials and their powerful manipulation of differently polarized terahertz waves显示文摘Metamaterials based on effective media can be used to produce a number of unusual physical properties(for example,negative refraction and invisibility cloaking)because they can be tailored with effective medium parameters that do not occur in nature.Recently,the use of coding metamaterials has been suggested for the control of electromagnetic waves through the design of coding sequences using digital elements‘0’and‘1,'which possess opposite phase responses.Here we propose the concept of an anisotropic coding metamaterial in which the coding behaviors in different directions are dependent on the polarization status of the electromagnetic waves.We experimentally demonstrate an ultrathin and flexible polarization-controlled anisotropic coding metasurface that functions in the terahertz regime using specially designed coding elements.By encoding the elements with elaborately designed coding sequences(both 1-bit and 2-bit sequences),the x-and y-polarized waves can be anomalously reflected or independently diffused in three dimensions.The simulated far-field scattering patterns and near-field distributions are presented to illustrate the dual-functional performance of the encoded metasurface,and the results are consistent with the measured results.We further demonstrate the ability of the anisotropic coding metasurfaces to generate a beam splitter and realize simultaneous anomalous reflections and polarization conversions,thus providing powerful control of differently polarized electromagnetic waves.The proposed method enables versatile beam behaviors under orthogonal polarizations using a single metasurface and has the potential for use in the development of interesting terahertz devices.Shuo Liu Tie Jun Cui Quan Xu Di Bao Liangliang Du Xiang Wan Wen Xuan Tang Chunmei Ouyang Xiao Yang Zhou Hao Yuan Hui Feng Ma Wei Xiang Jiang Jiaguang Han Weili Zhang Qiang Cheng 2016Light(Science & Applications)2016,5,1:36
5Achieving maximum power transfer of inductively coupled wireless power transfer system based on dynamic tuning control显示文摘As an emerging research field,inductively coupled wireless power transfer(ICWPT) technology has attracted wide spread attention recently.In this paper,the maximum power transfer performances of four basic topologies labeled as SS,SP,PS and PP are investigated.By modeling the equivalent circuits of these topologies in high frequency(HF),the primary resonance compensation capacitances for maximum power transfer capability are deduced.It is found that these capacitances fluctuate with load resistance change,which is disadvantageous to SP,PS and PP topologies and an obstacle to their practical applications as well.To solve this problem,a phase controlled inductor circuit is proposed.By adjusting the triggering angle,the real-time dynamic tuning control can be achieved to guarantee maximum power transfer.Finally,simulations and experiments show that the proposed method is of great effectiveness and reliability to solve the issue of resonance compensation capacitance fluctuation with load change and to guarantee the flexible applications of all topologies.QIANG Hao HUANG XueLiang TAN LinLin JI QingJing ZHAO JiaMing 2012Science China(Technological Sciences)2012,55,7:23
6Current 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
7Diverse modes of clonal evolution in HBV-related hepatocellular carcinoma revealed by single-cell genome sequencing显示文摘Hepatocellular 癌(HCC ) 是癌症实质词法,基因并且 phenotypic 差异。然而,我们不理解在 intratumor 异质和肿瘤的联系词法 / 组织学的特征之间的关系。用介绍 96 个肿瘤房间(30-36 各个) 和 15 个正常的肝房间(5 各个) 的单个房间的整个染色体的定序,与联系 HBV 的 HCC 从三个男病人收集了,我们证实拷贝数字变化在 hepatocarcinogenesis 早发生,但是此后在整个肿瘤仍然保持相对稳定前进。重要地,我们证明特定的 HCC 能具有 monoclonal 或 polyclonal 起源。有汇合的 multinodular 形态学的肿瘤是典型 polyclonal 肿瘤并且显示最高的 intratumor 异质。除了 mutational 和拷贝数字侧面,我们把了用导出 HBV 的外国 genomic 标记的 HCC 的同种细胞的起源。在 monoclonal HCC,所有肿瘤单身者房间展出一样的 HBV 集成,显示 HBV 集成是一个早司机事件并且在肿瘤前进期间仍然保持极其稳定。另外,我们的结果显示那两个都转移,迟了的传播并且早播种当模特儿,在 HCC 有一个角色前进。尤其是,开始的克隆传播的早 intrahepatic 导致同步 multifocal 肿瘤的形成。同时,我们在 HCC 识别了潜在的司机基因 ZNF717,它展出变化的高频率在单个房间并且人口铺平,,通过调整 IL-6/STAT3 小径行动的肿瘤 suppressor。这些调查结果热点多重不同肿瘤在 HCC 的进化机制,它为特定的处理策略建议需要。Meng Duan, Shu Zhang, Zhichao Wang, Jieyi Shi, Longzi Liu, Xiaoying Wang, Aiwu Ke, Jian Zhou, Jia Fan, Qiang Gao Junfeng Hao, Chong Li Sijia Cui Daniel L Worthley Ya Cao Ruibin Xi Xiaoming Zhang Jian Zhou, Jia Fan Qiang Gao 2018Cell Research2018,28,3:21
8Valproic acid reduces autophagy and promotes functional recovery after spinal cord injury in rats显示文摘Secondary damage is a critical determinant of the functional outcome in patients with spinal cord injury (SCI), and involves multiple mechanisms of which the most important is the loss of nerve cells mediated by multiple factors. Autophagy can result in cell death, and plays a key role in the development of SCI. It has been recognized that valproic acid (VPA) is neuroprotective in certain experimental animal models, however, the levels of autophagic changes in the process of neuroprotection by VPA treatment following SCI are still unknown. In the present study, we determined the extent of autophagy after VPA treatment in a rat model of SCI. We found that both the mRNA and protein levels of Beclin-1 and LC3 were significantly increased at 1, 2, and 6 h after SCI and peaked at 2 h; however, Western blot showed that autophagy was markedly decreased by VPA treatment at 2 h post-injury. Besides, post-SCI treatment with VPA improved the Basso-Beattie-Bresnahan scale, increased the number of ventral horn motoneurons, and reduced myelin sheath damage compared with vehicle-treated animals at 42 days after SCI. Together, our results demonstrated the characteristics of autophagy expression following SCI, and found that VPA reduced autophagy and enhanced motor function.Hai-Hu Hao Li Wang Zhi-Jian Guo Lang Bai Rui-Ping Zhang Wei-Bing Shuang Yi-Jia Jia Jie Wang Xiao-Yu Li Qiang Liu 2013Neuroscience Bulletin2013,29,4:19
9Impact of livelihood diversification of rural households on their ecological footprint in agro-pastoral areas of northern China显示文摘Human-environment relationship is a focus of academic researches and an understanding of the relationship is important for making effective policies and decisions. In this study, based on rural household survey data of Taibus Banner, Duolun county and Zhengxiangbai Banner in the Inner Mongolia autonomous region of China, we identified the impact of livelihood diversification on ecosystems in these agro-pastoral areas by using the ecological footprint theory and methodology together with the one-way analysis of variance(ANOVA) and correlation analysis methods. In 2011, the total ecological footprint of consumption(EFC) was 0.665 g hm2, and the total ecological footprint of production(EFP) was 2.045 g hm2, which was more than three times the EFC. The ecological footprint of arable land consumption(EFAC) accounted for a large proportion of the EFC, and the ecological footprint of grassland production(EFGP) occupied a large proportion of the EFP. Both the ecological footprint of grassland consumption(EFGC) and EFGP had a significant positive correlation with the income, indicating that income was mainly depended on livestock production and the households with higher incomes consumed more livestock products. The full-time farming households(FTFHs) had the highest EFP, ecological footprint of arable land production(EFAP), EFGP and EFGC, followed by the part-time farming households(PTFHs) and non-farming households(NFHs), which indicated that part-time farming and non-farming employment reduced the occupancy and consumption of rural households on local ecosystems and natural resources to some extent. When farming households engaged in livestock rearing, both the EFAP and EFAC became smaller, while the EFP, EFC, EFGC and EFGP increased significantly. The differences in ecological footprints among different household groups should be taken into account when making ecosystem conservation policies. Encouraging the laborers who have the advantages of participating in non-farming employment to move out of the rural areas and increasing the diversification of livelihoods of rural households are important in reducing the environmental pressures and improving the welfare of households in the study area. Moreover, grassland should be utilized more effectively in the future.HAO Haiguang ZHANG Jiping LI Xiubin ZHANG Huiyuan ZHANG Qiang 2015Journal of Arid Land2015,7,5:19
10Effectiveness of Different Waist Circumference Cut-off Values in Predicting Metabolic Syndrome Prevalence and Risk Factors in Adults in China显示文摘Objective To study the effectiveness of waist circumference cut-off values in predicting the prevalence of metabolic syndrome(MetS) and risk factors in adults in China. Methods A cross-sectional survey was condcuted in 14 provinces(autonomous region, municipality) in China. A total of 47 325 adults aged ≥20 years were selected by multistage stratified sampling, and questionnaire survey and physical and clinical examination were conducted among them. MetS was defined according to the International Diabetes Federation(IDF) criteria and modified IDF criteria.Results The age-standardized prevalence of MetS was 24.2%(22.1% in men and 25.8% in women) and 19.5%(22.1% in men and 18.0% in women) according to the IDF criteria and modified IDF criteria respectively. The age-standardized prevalence of pre-MetS was 8.1%(8.6% in men and 7.8% in women) according to the modified IDF criteria. The prevalence of MetS was higher in urban residents than rural residents and in northern China residents than in southern China residents. The prevalence of central obesity was about 30% in both men and women according to the ethnicity-specific cut-off values of waist circumference for central obesity(90 cm for men and 85 cm for women). Multivariate regression analysis revealed no significant difference in risk factors between the two MetS definitions. Conclusion Using both the modified IDF criteria and ethnicity-specific cut-off values of waist circumference can provide more useful information about the prevalence of MetS in China.ZHOU Hai Cheng LAI Ya Xin SHAN Zhong Yan JIA Wei Ping YANG Wen Ying LU Ju Ming WENG Jian Ping JI Li Nong LIU Jie TIAN Hao Ming JI Qiu He ZHU Da Long CHEN Li GUO Xiao Hui ZHAO Zhi Gang Li Qiang ZHOU Zhi Guang GE Jia Pu SHAN Guang Liang 2014Biomedical and Environmental Sciences2014,27,5:17
11Rapid improvement of PM2.5 pollution and associated health benefits in China during 2013–2017显示文摘Exposure to fine particulate matter(PM2.5)is known to harm public health.In China,after implementation of aggressive emissions control measures under the Action Plan of Air Pollution Prevention and Control(2013-2017),air quality has significantly improved.In this work,we investigated changes in PM2.5 exposure and the associated health impacts in China for the period 2013-2017.We used an optimal estimator of PM2.5 combining in-situ observations,satellite measurements,and simulations from a chemical transport model to derive the spatial and temporal variations in PM2.5 exposure,and then used welldeveloped exposure-response functions to estimate the premature deaths attributable to PM2.5 exposure.We found that national population-weighed annual mean PM2.5 concentrations decreased from 67.4μgm-3 in 2013 to 45.5μgm-3 in 2017(32%reduction).This rapid decrease in PM2.5 pollution led to a 14%reduction in premature deaths due to long-term exposure.We estimated that,during 2013-2017,the premature deaths attributable to long-term PM2.5 exposure decreased from 1.2 million(95%CI:1.0,1.3;fraction of total mortality:13%)in 2013 to 1.0 million(95%CI:0.9,1.2;10%)in 2017.Despite the rapid decrease in annual mean PM2.5 concentrations,health benefits associated with reduced long-term exposure were limited,because for many cities,the PM2.5 levels remain at the portion where the exposure-response function is less steeper than that at the lowconcentration end.We also found that the deaths associated with acute exposure decreased by 61%during 2013-2017 due to rapid reduction in the number of heavily polluted days.Our results confirm that clean air policies in China have mitigated the air pollution crisis;however,continuous emissions reduction efforts are required to protect citizens from air pollution.Tao XUE Jun LIU Qiang ZHANG Guannan GENG Yixuan ZHENG Dan TONG Zhu LIU Dabo GUAN Yu BO Tong ZHU Kebin HE Jiming HAO 2019Science China Earth Sciences2019,62,12:17
12The role of the HIF-1α/ALYREF/PKM2 axis in glycolysis and tumorigenesis of bladder cancer显示文摘Background:As a rate-limiting enzyme of glycolysis,pyruvate kinase muscle isozyme M2(PKM2)participates in tumor metabolism and growth.The regulatory network of PKM2 in cancer is complex and has not been fully studied in bladder cancer.The 5-methylcytidine(m5C)modification in PKM2 mRNA might participate in the pathogenesis of bladder cancer and need to be further clarified.This study aimed to investigate the biological function and regulatory mechanism of PKM2 in bladder cancer.Methods:The expression of PKM2 and Aly/REF export factor(ALYREF)was measured by Western blotting,qRT-PCR,and immunohistochemistry.The bioprocesses of bladder cancer cells were demonstrated by a series of experiments in vitro and in vivo.RNA immunoprecipitation,RNA-sequencing,and dualluciferase reporter assays were conducted to explore the potential regulatory mechanisms of PKM2 in bladder cancer.Results:In bladder cancer,we first demonstrated that ALYREF stabilized PKM2 mRNA and bound to its m5C sites in 3′-untranslated regions.Overexpression of ALYREF promoted bladder cancer cell proliferation by PKM2-mediated glycolysis.Furthermore,high expression of PKM2 and ALYREF predicted poor survival in bladder cancer patients.Finally,we found that hypoxia-inducible factor-1alpha(HIF-1α)indirectly up-regulated the expression of PKM2 by activating ALYREF in addition to activating its transcription directly.Conclusions:The m5C modification in PKM2 mRNA in the HIF-1α/ALYREF/PKM2 axis may promote the glucose metabolism of bladder cancer,providing a new promising therapeutic target for bladder cancer.Jing-Zi Wang Wei Zhu Jie Han Xiao Yang Rui Zhou Hong-Cheng Lu Hao Yu Wen-Bo Yuan Peng-Chao Li Jun Tao Qiang Lu Ji-Fu Wei Haiwei Yang 2021Cancer Communications2021,41,7:17
13Distribution Pattern of Photosynthetic Picoplankton and Heterotrophic Bacteria in the Northern South China Sea显示文摘在北华南海的微微浮游生物分发的环境规定在 2004 的冬季和夏天被检验。平均许多 Synechococcus , Prochlorococcus ,和异养细菌在冬季是更低的( 30 , 21 ,并且 780x103 cells/cm3 ,分别地)比在夏天( 53 , 85 ,和 1 090x103 cells/cm3 ,分别地),但是季节的模式为微微是相反的真核细胞的浮游植物(在冬季和夏天的 4 500 和 3 200 cells/cm3 ,分别地)。Synechococcus,微微优核质,和细菌很充满 thenutrient 富有的沿海的地区和大陆棚,但是 Prochlorococcus 很充满大陆人斜坡和开的海洋。每个光合的组和异养细菌的垂直分布在二个季节之间变化了。有显然不同的 phycoerythrobilin 内容的 Synechococcus 人口在夏天发生在许多车站。另外, Prochlorococcus 的二张不同人口被发现:(i) 小,微弱地发荧光在表面层的房间;并且(i i ) 在深层的更大的、强烈荧光灯的房间。光合的微微浮游生物和异养细菌的分发模式取决于环境效果和他们的 ecophysiological 差别。Synechococcus 的分发看起来与滋养的可获得性有关,而 Prochlorococcus 的分发看起来由温度有限。Synechococcus 是有与细菌的一种一致强壮的关系的唯一的微微浮游植物……Yu-Ming Cai Xiu-Ren Ning Cheng-Gang Liu Qiang Hao 2007Journal of Integrative Plant Biology2007,49,3:15
14miR-132 inhibits colorectal cancer invasion and metastasis via directly targeting ZEB2显示文摘AIM:To investigate the biological role and underlying mechanism of miR-132 in colorectal cancer(CRC)progression and invasion.METHODS:Quantitative RT-PCR analysis was used to examine the expression levels of miR-132 in five CRC cell lines(SW480,SW620,HCT116,HT29 and LoVo)and a normal colonic cell line NCM460,as well as in tumor tissues with or without metastases.The KaplanMeier method was used to analyze the prognostic significance of miR-132 in CRC patients.The biological effects of miR-132 were assessed in CRC cell lines using the transwell assay.Quantitative RT-PCR and western blot analyses were employed to evaluate the expression of miR-132 targets.The regulation of ZEB2 by miR-132was confirmed using the luciferase activity assay.RESULTS:miR-132 was significantly down-regulated in the CRC cell lines compared with the normal colonic cell line(P<0.05),as well as in the CRC tissues withdistant metastases compared with the tissues without metastases(10.52±4.69 vs 23.11±7.84)(P<0.001).Down-regulation of miR-132 was associated with tumor size(P=0.016),distant metastasis(P=0.002),and TNM stage(P=0.020)in CRC patients.Kaplan-Meier survival curve analysis indicated that patients with low expression of miR-132 tended to have worse diseasefree survival than patients with high expression of miR-132(P<0.001).Moreover,ectopic expression of miR-132 markedly inhibited cell invasion(P<0.05)and the epithelial-mesenchymal transition(EMT)in CRC cell lines.Further investigation revealed ZEB2,an EMT regulator,was a downstream target of miR-132.CONCLUSION:Our study indicated that miR-132 plays an important role in the invasion and metastasis of CRC.Yong-Bin Zheng Hai-Ping Luo Qiang Shi Zhi-Nan Hao Yu Ding Qiu-Shuang Wang Sheng-Bo Li Gao-Chun Xiao Shi-Lun Tong 2014World Journal of Gastroenterology2014,20,21:14
15Geo-engineered buffer capacity of two-layered absorbing system under the impact of rock avalanches based on Discrete Element Method显示文摘Many rock avalanches were triggered by the Wenchuan earthquake on May 12,2008 in southwest China.Protection galleries covered with a single soil layer are usually used to protect against rockfall.Since one-layer protection galleries do not have sufficient buffer capacity,a two-layered absorbing system has been designed.This study aims to find whether an expanded poly-styrol(EPS) cushion,which is used in the soil-covered protection galleries for shock absorption,could be positioned under dynamic loadings.The dynamic impacts of the two-layered absorbing system under the conditions ofrock avalanches are numerically simulated through a 2D discrete element method.By selecting reasonable parameters,a series of numerical experiments were conducted to find the best combination for the twolayered absorbing system.The values of the EPS layer area as a percentage of the total area were set as 0%(S1),22%(S2),and 70%(S3).22% of the area of the EPS layer was found to be a reasonable value,and experiments were conducted to find the best position of the EPS layer in the two-layered absorbing system.The numerical results yield useful conclusions regarding the interaction between the impacting avalanches and the two-layered absorbing system.The soil layer can absorb the shock energy effectively and S2(0.4-m thick EPS cushion covered with soillayer) is the most efficient combination,which can reduce the impact force,compared with the other combinations.BI Yu-zhang HE Si-ming LI Xin-po WU Yong XU Qiang OUYANG Chao-jun SU Li-Jun WANG Hao 2016Journal of Mountain Science2016,13,5:14
16Reproductive traits associated with invasiveness in Conyza sumatrensis显示文摘Conyza sumatrensis (Retz.) E. Walker, a member of Asteraceae, is a highly invasive species. However, its reproduction biology remains poorly known. To understand the role of reproductive traits in successful invasion of the species, we studied several traits of its reproductive system: the miniature capitulum and gynomonoecious sexual system, the biology and phenology of capitula and florets, pollen/ovule ratio, the mating system (self-compatibility), flower visitors, physical traits and dispersal potential of achenes, germination potential of achenes from manually pollinated capitula, and the association of these traits with invasiveness. Our study showed that the reproductive traits of autonomous seed production, versatile mating system of self- and cross-pollination, and generalized pollination system might contribute to the species' successful invasive capability. The invasiveness was further enhanced by the high and rapid production of achenes, as well as the high percentage, rapid germination rate and high dispersal capability of achenes. It was concluded that in annual or winter-annual weeds, autonomous seed production contributed significantly to the invasiveness of the species.jian-Hua HAO Sheng QIANG Qian-Qian LIU Fei CAO 2009Journal of Systematics and Evolution2009,47,3:13
17Using the EMD Method to Determine Fault Criterion for Medium-low Pressure Gas Regulators显示文摘By extracting the outlet pressure data of gas regulators,this paper uses the EMD toolbox of the MATLAB software,which can perform data decomposition and the Hilbert-Huang Transform to find the rules with fault data.Eventually,the medium-low pressure gas regulator fault criterion can be established.HAO Xuejun LIU Qiang YANG Guobin DU Yi 2015Journal of Thermal Science2015,24,6:11
18Torn discoid lateral meniscus treated with arthroscopic meniscectomy:observations in 62 knees显示文摘膝的背景圆盘形的侧面的新月在中国人口是普通的。关于为圆盘形的侧面的新月眼泪的最好的处理有可观的争论。这研究的目的是为在 1999 年 7 月和 2004 年 12 月之间的圆盘形的侧面的新月 tears.Methods 的治疗观察 arthroscopic meniscectomy 的效果, arthroscopic meniscectomy 与圆盘形的侧面的新月眼泪在 57 个病人的 62 menisci 上被执行(52 单方, 5 双边) 。41 menisci 是“完全的圆盘形的新月”, 21 “不完全”。根据新月眼泪的程度,部分 meniscectomy 在 52 膝, 7 膝上的全部的 meniscectomy,和通过 arthroscope.After 在 3 膝上与新月缝术相结合的部分 meniscectomy 上被执行操作,包括 straight-leg-raising 和 range-of-motion 锻练,早康复训练节目被执行。51 个病人被跟随在上面为 1 年 2 个月到 6 年 5 个月(平均数, 3 年 3 个月) , 6 个病人被失去。Lysholm- 得分系统被用来在操作前估计膝关节的函数,没有复杂并发症,在 follow-up.Results 期间,所有 62 膝上的操作是成功的。病人能在完成 2 星期的 postoperation 康复程序以后通常走。在 3-4 星期以后,他们能过正常生活并且参予运动或另外的物理活动的中等数量。吝啬的 Lysholm- 分数是 89 (60-100 ) 在后续,在操作前比那显著地高,期间 50,范围 34-74;P0.01 ) 。88% 病人完成了优秀或好的临床的 results.Conclusions Arthroscopic meniscectomy 是为有最小的创伤的效果的圆盘形的侧面的新月眼泪的治疗的一种选择。它能完成早动员和低复杂并发症到最大的程度的新月结构和功能的率,以及保藏。在有合适的康复训练的联合,操作能导致好或优秀的结果。LU Ying LI Qiang HAO Jie 2007Chinese Medical Journal2007,,3:11
19Clopidogrel with aspirin in High- risk patients with Acute Non- disabling Cerebrovascular Events II (CHANCE-2): rationale and design of a multicentre randomised trial显示文摘Background In patients with a minor ischaemic stroke or transient ischaemic attack(TIA),separate trials have shown that dual antiplatelet therapy with clopidogrel plus aspirin(clopidogrel-aspirin)or ticagrelor plus aspirin(ticagrelor-aspirin)are more effective than aspirin alone in stroke secondary prevention.However,these two sets of combination have not been directly compared.Since clopidogrel was less effective in stroke patients who were CYP2C19 loss-of function(LOF)allele carriers,whether ticagrelor-aspirin is clinically superior to clopidogrel-aspirin in this subgroup of patients with stroke is unclear.Aim To describe the rationale and design considerations of the Clopidogrel in High-risk patients with Acute Non-disabling Cerebrovascular Events(CHANCE-2)trial.Design CHANCE-2 is a randomised,double-blind,double-dummy,placebo-controlled,multicentre trial that compares two dual antiplatelet strategies for minor stroke or TIA patients who are CYP2C19 LOF allele carriers:ticagrelor(180 mg loading dose on day 1 followed by 90 mg twice daily on days 2-90)or clopidogrel(300 mg loading dose on day 1 followed by 75 mg daily on days 2-90),plus open-label aspirin with a dose of 75-300 mg on day 1 followed by 75 mg daily on day 2-21.All will be followed for 1 year.Study outcomes The primary efficacy outcome is any stroke(ischaemic or haemorrhagic)within 3 months and the primary safety outcome is any severe or moderate bleeding event within 3 months.Discussion The CHANCE-2 trial will evaluate whether ticagrelor-aspirin is superior to clopidogrel-aspirin for minor stroke or TIA patients who are CYP2C19 LOF allele carriers.Yongjun Wang Claiborne Johnston Philip M Bath Xia Meng Jing Jing Xuewei Xie Anxin Wang Yuesong Pan Anding Xu Qiang Dong Yilong Wang Xingquan Zhao Zixiao Li Hao Li 2021Stroke & Vascular Neurology2021,6,2:10
20Computer-assisted preoperative planning for proximal humeral fractures by minimally invasive plate osteosynthesis显示文摘Chen Yanxi Zhang Kun Qiang Minfei Li Haobo Dai Hao 2014Chinese Medical Journal2014,,18:9
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