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| 1 | Efficient generation of hepatocyte-like cells from human induced pluripotent stem cells显示文摘人的导致的 pluripotent 茎(iPS ) 房间类似于胚胎的茎(ES ) 房间,和罐头强烈地增殖并且区分进许多房间类型。然而,人的 iPS 房间的肝的区别还没被报导了。在这份报告,人的 iPS 房间被导致由一个逐步的协议区分进肝的房间。肝房间标记的表达式和人的 iPS 的肝相关的函数导出房间的房间被监视并且与区分的人的 ES 房间和主要人的 hepatocytes 的相比。在白天 7 点的约 60% 区分的人的 iPS 房间表示了肝的标记 alpha fetoprotein 和白长袍的。在白天 21 点的区分的房间包括白朊 Asecretion,肝糖合成,脲生产和可诱导的细胞色素 P450 活动展出了肝房间功能。肝的标记的表示和 iPS 的肝相关的功能导出房间的肝的房间比得上人的 ES 导出房间的肝的房间的。这些结果证明人的 iPS 房间,类似于人的 ES 房间,能高效地被导致区分房间进象 hepatocyte 一样。 | Zhihua Song Jun Cai Yanxia Liu Dongxin Zhao Jun Yong Shuguang Duo Xijun Song Yushan Guo Yang Zhao Han Qin Xiaolei Yin Chen Wu Jie Che Shichun Lu Mingxiao Ding Hongkui Deng | 2009 | Cell Research2009,19,11: | 63 |
| 2 | XA23 Is an Executor R Protein and Confers Broad-Spectrum Disease Resistance in Rice显示文摘 | Chunlian Wang Xiaoping Zhang Yinglun Fan Ying Gao Qinlong Zhu Chongke Zheng Tengfei Qin Yanqiang Li Jinying Che Mingwei Zhang Bing Yang Yaoguang Liu Kaijun Zhao | 2015 | Molecular Plant2015,8,2: | 55 |
| 3 | Overexpression of SOS (Salt Overly Sensitive) Genes Increases Salt Tolerance in Transgenic Arabidopsis显示文摘土壤咸度是减少种的一个主要不能生活的压力生长和生产率。最近,植物 overexpressing AtNHX1 或 SOS1 显著地增加了盐忍耐,这被报导。为了测试多重基因的 overexpression 是否能改善,甚至更种盐忍耐,我们生产了六不同转基因的 Arabidopsis 植物那 overexpress AtNHX1, SOS3, AtNHX1 ?+? SOS3, SOS1, SOS2 ?+? SOS3,或 SOS1 ?+? SOS2 ?+? SOS3。北污点分析在转基因的植物证实了相关基因抄本的高水平的存在。转基因的 Arabidopsis 植物 overexpressing AtNHX1 独自没在盐忍耐介绍任何重要增加,与更早的报告相反。我们发现那转基因的植物 overexpressing SOS3 展览增加了类似于植物 overexpressing SOS1 的盐忍耐。而且,转基因的植物 overexpressing AtNHX1 的盐忍耐 ?+? SOS3, SOS2 ?+? SOS3,或 SOS1 ?+? SOS2 ?+? 分别地, SOS3 独自显得类似于转基因的植物 overexpressing 任何一个 SOS1 或 SOS3 的忍耐。 | Qing Yang | 2009 | Molecular Plant2009,2,1: | 44 |
| 4 | Preliminary results pertaining to coseismic displacement and preseismic strain accumulation of the Lushan M_S7.0 earthquake,as reflected by GPS surveying显示文摘This paper presents the coseismic displacement and preseismic deformation fields of the Lushan MS7.0 earthquake that occurred on April 20,2013.The results are based on GPS observations along the Longmenshan fault and within its vicinity.The coseismic displacement and preseismic GPS results indicate that in the strain release of this earthquake,the thrust rupture is dominant and the laevorotation movement is secondary.Furthermore,we infer that any possible the rupture does not reach the earth’s surface,and the seismogenic fault is most likely one fault to the east of the Guanxian-Anxian fault.Some detailed results are obtainable.(1)The southern segment of the Longmenshan fault is locked preceding the Lushan earthquake.After the Wenchuan earthquake,the strain accumulation rate in the southeast direction accelerates in the epicenter of the Lushan earthquake,and the angle between the principal compressional strain and the seismogenic fault indicates that a sinistral deformation background in the direction of the seismogenic fault precedes the Lushan earthquake.Therefore,it is evident that the Wenchuan MS8.0 earthquake accelerated the pregnancy of the Lushan earthquake.(2)The coseismic displacements reflected by GPS data are mainly located in a region that is 230 km(NW direction)×100 km(SW direction),and coseismic displacements larger than 10 mm lie predominantly in a100-km region(NW direction).(3)On a large scale,the coseismic displacement shows thrust characteristics,but the associated values are remarkably small in the near field(within 70 km)of the earthquake fault.Meanwhile,the thrust movement in this70-km region does not correspond with the attenuation characteristics of the strain release,indicating that the rupture of this earthquake does not reach the earth’s surface.(4)The laevorotation movements are remarkable in the 50-km region,which is located in the hanging wall that is close to the earthquake fault,and the corresponding values in this case correlate with the attenuation characteristics of the strain release. | WU YanQiang JIANG ZaiSen WANG Min CHE Shi LIAO Hua LI Qiang LI Peng YANG YongLin XIANG HePing SHAO ZhiGang WANG WuXing WEI WenXin LIU XiaoXia | 2013 | Chinese Science Bulletin2013,58,28: | 33 |
| 5 | Therapeutic potential of siRNA-mediated combined knockdown of the lAP genes (Livin, XIAP, and Survivin) on human bladder cancer T24 cells显示文摘Livin, apoptosis (XIAP ) 的 X 连接禁止者,和 Survivin 几乎是 apoptosis 的三个著名禁止者在癌症房间只过去表示并且为癌症治疗被认为有势力目标。在现在的学习,我们发现 Livin, XIAP,和 Survivin 同时在膀胱癌症房间被表示。我们推测了那 Livin, XIAP,和 Survivin 可能在房间生长和 apoptosis 上有 synergistic 效果。我们的结果证实了联合那所有这三基因击倒能 synergistically 禁止增长和高级膀胱癌症 T24 房间的转变能力并且把房间 apoptotic 敏感提升到化疗。而且,联合了 Livin, XIAP,和 Survivin 罐头击倒显著地增加许多活跃 caspase-3,活跃 caspase-7,活跃 caspase-9,和 cytosolic Smac。我们的调查结果暗示 Livin, XIAP,和 Survivin 的那联合 silencing 可以是一个有势力为膀胱癌症的多指向的基因治疗。 | Deyong Yang Xishuang Song Jianing Zhang Lin Ye Shujing Wang Xiangyu Che Jianbo Wang Zhiwei Zhang Lina Wang Wei Shi | 2010 | Acta Biochimica et Biophysica Sinica2010,42,2: | 29 |
| 6 | Zircon U-Pb geochronological framework of Qitianling granite batholith, middle part of Nanling Range, South China显示文摘The Qitianling granite batholith (QGB) is located in the southern Hunan Province, middle part of the Nanling Range, South China. Its total exposure area is about 520 km2. Based on our 25 single grain zircon U-Pb age data and 7 published data as well as the geological, petrological, and space distribution characteristics, we conclude that QGB is an Early Yanshanian (Jurassic) multi-staged composite pluton. Its formation process can be subdivided into three major stages. The first stage, emplaced at 163―160 Ma with a peak at about 161 Ma, is mainly composed of hornblende-biotite monzonitic granites and locally biotite granites, and distributed in the eastern, northern, and western peripheral parts of the pluton. The second stage, emplaced at 157―153 Ma with a peak at 157―156 Ma, is mainly composed of biotite granites and locally containing hornblende, and distributed in the middle and southeastern parts of the pluton. The third stage, emplaced at 150―146 Ma with a peak at about 149 Ma, is mainly composed of fine-grained (locally porphyritic) biotite granites, and distributed in the middle-southern part of the pluton. Each stage can be further disintegrated into several granite bodies. The first two intrusive stages comprise the major phase of QGB, and the third intrusive stage comprises the additional phase. Many second stage fine-grained granite bosses and dykes intruded into the first stage host granites with clear chilling margin-baking phenomena at their intrusive contacts. They were emplaced in the open fracture space of the earlier stage consolidated rocks. Their isotopic ages are mostly 2―6 Ma younger than their hosts. Conceivably, the time interval from magma emplacement, through cooling, crystallization, solidification, up to fracturing of the earlier stage granites cannot exceed 2―6 Ma. During the Middle-Late Jurassic in the Qitianling area and neighboring Nanling Range, the coeval granitic and basic-intermediate magmatic activities were widely developed. It indicates that the Early Yanshanian period was the culmination time of magmatic activities in this region. The Nanling Range was under a post-orogenic, intracontinental geotectonic environment with an obvious lithospheric extension and thinning. The crust-mantle interaction played an important role in formation of granitic rocks in this region. | ZHU JinChu WANG RuCheng ZHANG PeiHua XIE CaiFu ZHANG WenLan ZHAO KuiDong XIE Lei YANG Ce CHE XuDong YU APeng WANG LuBin | 2009 | Science China Earth Sciences2009,52,9: | 27 |
| 7 | Relative Contributions of Boundary-Layer Meteorological Factors to the Explosive Growth of PM2.5 during the Red-Alert Heavy Pollution Episodes in Beijing in December 2016显示文摘Based on observations of urban mass concentration of fine particulate matter smaller than 2.5 μm in diameter(PM_(2.5)), ground meteorological data, vertical measurements of winds, temperature, and relative humidity(RH), and ECMWF reanalysis data, the major changes in the vertical structures of meteorological factors in the boundary layer(BL) during the heavy aerosol pollution episodes(HPEs) that occurred in winter 2016 in the urban Beijing area were analyzed. The HPEs are divided into two stages: the transport of pollutants under prevailing southerly winds, known as the transport stage(TS), and the PM_(2.5) explosive growth and pollution accumulation period characterized by a temperature inversion with low winds and high RH in the lower BL, known as the cumulative stage(CS). During the TS, a surface high lies south of Beijing, and pollutants are transported northwards. During the CS, a stable BL forms and is characterized by weak winds, temperature inversion, and moisture accumulation. Stable atmospheric stratification featured with light/calm winds and accumulated moisture(RH > 80%) below 250 m at the beginning of the CS is closely associated with the inversion, which is strengthened by the considerable decrease in near-surface air temperature due to the interaction between aerosols and radiation after the aerosol pollution occurs. A significant increase in the PLAM(Parameter Linking Aerosol Pollution and Meteorological Elements) index is found, which is linearly related to PM mass change. During the first 10 h of the CS, the more stable BL contributes approximately 84% of the explosive growth of PM_(2.5) mass. Additional accumulated near-surface moisture caused by the ground temperature decrease, weak turbulent diffusion, low BL height, and inhibited vertical mixing of water vapor is conducive to the secondary aerosol formation through chemical reactions, including liquid phase and heterogeneous reactions, which further increases the PM_(2.5) concentration levels. The contribution of these reaction mechanisms to the explosive growth of PM_(2.5) mass during the early CS and subsequent pollution accumulation requires further investigation. | junting zhong xiaoye zhang yaqiang wang junying sun yangmei zhang jizhi wang kaiyan tan xiaojing shen haochi che lu zhang zhouxiang zhang xuefei qi huarong zhao sanxue ren yang li | 2017 | Journal of Meteorological Research2017,31,5: | 25 |
| 8 | Genetic Algorithm-Based Optimization Used in Rolling Schedule显示文摘A genetic algorithm-based optimization was used for 1 370 mm tandem cold rolling schedule,in which the press rates were coded and operated.The superiority individual is reserved in every generation.Analysis and comparison of optimized schedule with the existing schedule were offered.It is seen that the performance of the optimal rolling schedule is satisfactory and promising. | YANG Jing-ming CHE Hai-jun DOU Fu-ping ZHOU Tao | 2008 | Journal of Iron and Steel Research(International)2008,15,2: | 14 |
| 9 | Integral stormwater management master plan and design in an ecological community显示文摘Urban stormwater runoff nearly discharges directly into bodies of water through gray infrastructure in China,such as sewers,impermeable ditches,and pump stations.As urban flooding,water shortage,and other environment problems become serious,integrated water environment management is becoming increasingly complex and challenging.At more than 200 ha,the Oriental Sun City community is a large retirement community located in the eastern side of Beijing.During the beginning of its construction,the project faced a series of serious water environment crises such as eutrophication,flood risk,water shortage,and high maintenance costs.To address these issues,an integral stormwater management master plan was developed based on the concept of low impact development(LID).A large number of LID and green stormwater infrastructure(GSI)approaches were designed and applied in the community to replace traditional stormwater drainage systems completely.These approaches mainly included bioretention(which captured nearly 85th percentile volume of the annual runoff in the site,nearly 5.4×105m3annually),swales(which functioned as a substitute for traditional stormwater pipes),waterscapes,and stormwater wetlands.Finally,a stormwater system plan was proposed by integrating with the gray water system,landscape planning,an architectural master plan,and related consultations that supported the entire construction period.After more than 10 years of planning,designing,construction,and operation,Oriental Sun City has become one of the earliest modern large-scale LID communities in China.Moreover,the project not only addressed the crisis efficiently and effectively,but also yielded economic and ecological benefits. | Wu Che Yang Zhao Zheng Yang Junqi Li Man Shi | 2014 | Journal of Environmental Sciences2014,26,9: | 13 |
| 10 | Hierarchical Magnetic Network Constructed by CoFe Nanoparticles Suspended Within “Tubes on Rods” Matrix Toward Enhanced Microwave Absorption显示文摘Hierarchical magnetic-dielectric composites are promising functional materials with prospective applications in microwave absorption(MA)field.Herein,a three-dimension hierarchical“nanotubes on microrods,”core–shell magnetic metal–carbon composite is rationally constructed for the first time via a fast metal–organic frameworksbased ligand exchange strategy followed by a carbonization treatment with melamine.Abundant magnetic CoFe nanoparticles are embedded within one-dimensional graphitized carbon/carbon nanotubes supported on micro-scale Mo2N rod(Mo2N@CoFe@C/CNT),constructing a special multi-dimension hierarchical MA material.Ligand exchange reaction is found to determine the formation of hierarchical magnetic-dielectric composite,which is assembled by dielectric Mo2N as core and spatially dispersed CoFe nanoparticles within C/CNTs as shell.Mo2N@CoFe@C/CNT composites exhibit superior MA performance with maximum reflection loss of−53.5 dB at 2 mm thickness and show a broad effective absorption bandwidth of 5.0 GHz.The Mo2N@CoFe@C/CNT composites hold the following advantages:(1)hierarchical core–shell structure offers plentiful of heterojunction interfaces and triggers interfacial polarization,(2)unique electronic migration/hop paths in the graphitized C/CNTs and Mo2N rod facilitate conductive loss,(3)highly dispersed magnetic CoFe nanoparticles within“tubes on rods”matrix build multi-scale magnetic coupling network and reinforce magnetic response capability,confirmed by the off-axis electron holography. | Chunyang Xu Lei Wang Xiao Li Xiang Qian Zhengchen Wu Wenbin You Ke Pei Gang Qin Qingwen Zeng Ziqi Yang Chen Jin Renchao Che | 2021 | Nano-Micro Letters2021,13,3: | 10 |
| 11 | Application of open-pit and underground mining technology for residual coal of end slopes显示文摘Given the conditions of residual coal from the boundary of a flat dipping open-pit mine,which uses strip areas mining and inner dumping with slope-covering,we propose an open-pit and underground integrated mining technology for residual coal of end slopes.In the proposal a conveyance road and ventilation conveyance near the slope are built,corresponding to the pit mining area and the surface coal mine dump,as well as an interval haulage tunnel and air-inlet tunnel.The outcome shows that such mining method may reduce the effect to slope stability from underground mining,it does not affect the dumping advance and has a high recovery rate of residual coal resources.The working face is timbered by single hydraulic props,transported by a scraper conveyor and supported by coal walls.This method of mining is one of layered top coal caving,with high resource recovery,low production cost where positive economic benefit can be realized. | CHE, Zhaoxue YANG, Hong | 2010 | Mining Science and Technology2010,20,2: | 9 |
| 12 | Quantized Dynamic Output Feedback H∞ Control for Discrete-time Systems with Quantizer Ranges Consideration显示文摘使量子化的动态产量反馈 H 控制为的问题分离时间线性时间不变(LTI ) 系统在这份报纸被调查。考虑的 quantizer 动态、镇静一可调节激增参数和静态的 quantizer。静态的 quantizer 范围具有实际意义并且充分被考虑。首先,考虑量子化错误,使量子化的控制策略控制器状态依赖于不仅而且在系统测量产量上,它被建议以便使量子化的靠近环的系统是 asymptotically 稳定的,与规定 H,性能跳。根据这结果,然后,一个反复的基于 LMI 的优化算法被开发优化静态的 quantizer 范围为靠近环的系统满足 H 表演要求。一个例子被举说明建议方法的有效性。 | CHE Wei-Wei YANG Guang-Hong | 2008 | 自动化学报2008,34,6: | 7 |
| 13 | An individualized immune signature of pretreatment biopsies predicts pathological complete response to neoadjuvant chemoradiotherapy and outcomes in patients with esophageal squamous cell carcinoma显示文摘No clinically available biomarkers can predict pathological complete response(pCR)for esophageal squamous cell carcinomas(ESCCs)with neoadjuvant chemoradiotherapy(nCRT).Considering that antitumor immunity status is an important determinant for nCRT,we performed an integrative analysis of immune-related gene profiles from pretreatment biopsies and constructed the first individualized immune signature for pCR and outcome prediction of ESCCs through a multicenter analysis.During the discovery phase,14 differentially expressed immune-related genes(DEIGs)with greater than a twofold change between pCRs and less than pCRs( | Chaoqi Zhang Guochao Zhang Nan Sun Zhen Zhang Liyan Xue Zhihui Zhang Haijun Yang Yuejun Luo Xiaoli Zheng Yonglei Zhang Yufen Yuan Ruixue Lei Zhaoyang Yang Bo Zheng Le Wang Yun Che Feng Wang Sihui Wang Shugeng Gao Qi Xue Yi Zhang Jie He | 2020 | Signal Transduction and Targeted Therapy2020,5,1: | 7 |
| 14 | Non-fragile H∞ Filtering for Discrete-time Systems with Finite Word Length Consideration显示文摘过滤有限的词长度(FWL ) 为线性分离时间的系统影响的问题的 nonfragile H 在这份报纸被调查。要设计的过滤器被假定与添加剂获得变化,它在过滤器实现上反映 FWL 效果。结构化的顶点隔板的一个观点被建议处理这个问题并且利用了以一套线性矩阵不平等(LMI ) 为 nonfragile H 过滤器设计开发足够的条件。设计使扩充系统变为 asymptotically 稳定并且保证 H 变细水平不到规定水平。一个数字例子被给说明建议方法的效果。 | CHE Wei-Wei YANG Guang-Hong | 2008 | 自动化学报2008,34,8: | 7 |
| 15 | Synergistic therapy of magnetism-responsive hydrogel for soft tissue injuries显示文摘Soft tissue injury is very common and associated with pain,tissue swelling and even malformation if not treated on time.Treating methods include cryotherapy,electrical therapy,ultrasound therapy and anti-inflammatory drug,but none of them is completely satisfying.In this work,for a better therapeutic effect,drug therapy and pulsed electromagnetic field(PEMF)therapy were combined.We constructed a drug delivery system using the tetra-PEG/agar hydrogel(PA).By incorporating Fe3O4 NPs into the hydrogel network,a magnetism-responsive property was achieved in the system.The cytotoxicity and in vivo study showed a good biocompatibility of the PA/Fe3O4 hydrogel.A magnetism-controlled release was attained by the incorporation of Fe3O4.Finally,in vivo study showed a better performance of the DS-loaded PA/Fe3O4 compared with the commercially available DS ointment regarding the recovery of the injured soft tissue.Therefore,this magnetism-responsive hydrogel may represent a promising alternative to treat soft tissue injury. | Lining Zhang Xiuqin Zuo Shengjie Li Mi Sun Huimin Xie Kai Zhang Jikun Zhou Liyun Che Junxuan Ma Zishan Jia Fei Yang | 2019 | Bioactive Materials2019,4,1: | 7 |
| 16 | Modified Multi-Key Fully Homomorphic Encryption Based on NTRU Cryptosystem without Key-Switching显示文摘The Multi-Key Fully Homomorphic Encryption (MKFHE) based on the NTRU cryptosystem is an important alternative to the post-quantum cryptography due to its simple scheme form,high efficiency,and fewer ciphertexts and keys.In 2012,Lopez-Alt et al.proposed the first NTRU-type MKFHE scheme,the LTV12 scheme,using the key-switching and modulus-reduction techniques,whose security relies on two assumptions:the Ring Learning With Error (RLWE) assumption and the Decisional Small Polynomial Ratio (DSPR) assumption.However,the LTV12and subsequent NTRU-type schemes are restricted to the family of power-of-2 cyclotomic rings,which may affect the security in the case of subfield attacks.Moreover,the key-switching technique of the LTV12 scheme requires a circular application of evaluation keys,which causes rapid growth of the error and thus affects the circuit depth.In this paper,an NTRU-type MKFHE scheme over prime cyclotomic rings without key-switching is proposed,which has the potential to resist the subfield attack and decrease the error exponentially during the homomorphic evaluating process.First,based on the RLWE and DSPR assumptions over the prime cyclotomic rings,a detailed analysis of the factors affecting the error during the homomorphic evaluations in the LTV12 scheme is provided.Next,a Low Bit Discarded&Dimension Expansion of Ciphertexts (LBD&DEC) technique is proposed,and the inherent homomorphic multiplication decryption structure of the NTRU is proposed,which can eliminate the key-switching operation in the LTV12 scheme.Finally,a leveled NTRU-type MKFHE scheme is developed using the LBD&DEC and modulus-reduction techniques.The analysis shows that the proposed scheme compared to the LTV12 scheme can decrease the magnitude of the error exponentially and minimize the dimension of ciphertexts. | Xiaoliang Che Tanping Zhou Ningbo Li Haonan Zhou Zhenhua Chen Xiaoyuan Yang | 2020 | Tsinghua Science and Technology2020,25,5: | 6 |
| 17 | RAPD Analysis of M_1 Generation of Gladiolus hybridus Hort Treated by EMS显示文摘Gladiolus hybridus Hort is one of the world's famous cutting flowers. It is very popular because of the big size, bright color, various shape, and long period of bloom. New species should be cultivated in order to meet the consumers' need of asking for the new. Among the technologies of cultivating new species of flowers, mutagenic breeding is a shortcut. This study treated corm bud of G. hybridus Hort with EMS of different consistency. Then M1 after treated was analyzed by RAPD. The result showed that EMS was a very effective mutagenic agent for the corm bud of G. hybridus Hort. With the increase of consistency, the mutagenic range increased first, then decreased, among which 0.6% EMS treatment had the biggest influence. However, with the same EMS consistency, there was not close relevancy between the amount of mutagenic agent and the divergence of plant's genomes, which offered a molecular basis for selecting plants with good mutation. | WANG Jingang GUO Ying CHE Daidi LIU Shenkui YANG Chuanpin | 2009 | Journal of Northeast Agricultural University(English Edition)2009,16,1: | 6 |
| 18 | Multi-Objective Optimization for Tandem Cold Rolling Schedule显示文摘Considering the multivariable, strong-coupled, and nonlinear features of tandem cold rolling mill, a mathematical model of multi-objective optimization was built to facilitate the design of new systems aiming at equating the relative load, preventing slip, and obtaining best shape. BP (back propagation) neural network based on Levenberg-Marquardt algorithm was used for predicting the rolling force. The multi-objective fuzzy theory and method were introduced during the optimization. With an example of 1[KG-9]370 mm tandem cold rolling mill, the rolling schedule of the common rolling, the single-objective optimization design, and the multi-objective fuzzy optimization design were compared with each other. The results generated from the case study showed that the proposed approach could significantly decreased the values of three objective functions simultaneously and the performance of the optimal rolling schedule was satisfactory and promising. Moreover, the capability and usefulness of fuzzy application in tandem cold rolling schedule were clearly demonstrated. | YANG Jing-ming ZHANG Qing CHE Hai-jun HAN Xin-yan | 2010 | Journal of Iron and Steel Research(International)2010,17,11: | 6 |
| 19 | Comparison of Histological, Microbiological, and Molecular Methods in Diagnosis of Patients with TBLN Having Different Anti-TB Treatment Background显示文摘Objective The influence of anti-tuberculosis(TB) treatment history on tuberculous lymphadenitis(TBLN) diagnosis is unclear. Therefore, this study aims to evaluate the diagnostic methods, including histology, microbiology, and molecular tests, used for TBLN. Methods In this study, suspected patients with TBLN and having different anti-TB treatment background were enrolled. All the samples were tested simultaneously by histology, Ziehl-Neelsen(ZN) staining, mycobacterial culture(culture), Xpert MTB/RIF(xpert), real-time PCR, and high-resolution melting curve PCR(HRM). Thereafter, the performance of these methods on samples with different anti-TB treatment background was assessed. Results In our study, 89 patients were prospectively included 82 patients with TBLN and 7 with other diseases. The overall sensitivities of Xpert, real-time PCR, histology, ZN staining, and culture were 86.6%, 69.5%, 58.5%, 43.9%, and 22.0%, respectively. The anti-TB treatment history revealed dramatic influences on the sensitivity of culture(P < 0.0001). In fact, the treatment that lasted over 3 months also influenced the sensitivity of Xpert(P < 0.05). However, the treatment history did not affect the performance of remaining tests(P > 0.05). For rifampicin drug susceptibility test(DST), the anti-TB treatment showed only significant influence on the success rate of culture DST(P = 0.001), but not on those of Xpert and HRM tests(P > 0.05). Conclusion Other tests as well as culture should be considered for patients with TBLN having retreatment history or over 1-month treatment to avoid false negative results. | CHE Nan Ying HUANG Shao Jun MA Yan HAN Yi LIU Zi Chen ZHANG Chen MU Jing ZHAO Dan QU Yang ZHANG Hai Qing LIU Zhi Dong XU Shao Fa | 2017 | Biomedical and Environmental Sciences2017,30,6: | 6 |
| 20 | HPLC-MS analysis of Schisandra lignans and their metabolites in Caco-2 cell monolayer and rat everted gut sac models and in rat plasma显示文摘The absorption profiles of Schisandra chinensis were evaluated using the human Caco-2 cell monolayer and rat everted gut sac models,as well as in rat plasma.By analyzing the chromatographic and MSn characteristics of individual peak acquired by HPLC-DAD-APCI-MS^(n) determination,thirteen lignans were identified as the major in vitro absorbable components of the Schisandra extract.Most of these compounds were also detected and identified in rat plasma after an oral administration of the Schisandra extract,except for angeloyl(tigloyl)gomisin H and angeloyl(tigloyl)gomisin Q,whose structures possess an ester group at the cyclooctadiene ring.In addition,four metabolites,corresponding to the hydroxylation and demethylation products of schisandrin and the hydrolysis derivative of angeloyl(tigloyl)gomisin Q,were tentatively identified.The results demonstrate that Schisandra lignans are the major absorbable components of this crude drug,and hydroxylation,demethylation and hydrolysis are important metabolic transformations of the absorbable lignans. | Jia-ming Yang Siu-po PIP Hok-keung JYeung Chun-tao Che | 2011 | Acta Pharmaceutica Sinica B2011,1,1: | 6 |