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1China’s urban expansion from 1990 to 2010 determined with satellite remote sensing显示文摘Based on the same data source of Landsat TM/ETM+ in 1990s,2000s and 2010s,all urban built-up areas in China are mapped mainly by human interpretation.Mapping results were checked and refined by the same analyst with the same set of criteria.The results show during the last 20 years urban areas in China have increased exponentially more than 2 times.The greatest area of urbanization changed from Northeastern provinces in 1990s to the Southeast coast of China in Jiangsu,Guangdong,Shandong,and Zhejiang in 2010s.Urban areas are mostly converted from croplands in China.Approximately 17750 km 2 croplands were converted into urban lands.Furthermore,the conversion from 2000 to 2010 doubled that from 1990 to 2000.During the 20 years,the most urbanized provinces are Jiangsu,Guangdong,Shandong and Zhejiang.We also analyzed built-up areas,gross domestic production (GDP) and population of 147 cities with a population of greater than 500000 in 2009.The result shows coastal cities and resource-based cities are with high economic efficiency per unit of built-up areas,resource-based cities have the highest population density,and the economic efficiency of most coastal provinces are lower than central provinces and Guangdong.The newly created urban expansion dataset is useful in many fields including trend analysis of urbanization in China;simulation of urban development dynamics;analysis of the relationship among urbanization,population growth and migration;studies of carbon emissions and climate change;adaptation of climate change;as well as land use and urban planning and management.WANG Lei LI CongCong YING Qing CHENG Xiao WANG XiaoYi LI XueYan HU LuanYun LIANG Lu YU Le HUANG HuaBing GONG Peng 2012Chinese Science Bulletin2012,57,22:64
2TRICHOMEAND ARTEMISININ REGULATOR 1 Is Required for Trichome Development and Artemisinin Biosynthesis in Artemisia annua显示文摘毛状体,许多植物种类的表面上的小伸出,能生产并且存储各种各样的第二等的新陈代谢的产品。Artemisinin,最著名并且为疟疾的有势力药,被综合,存储,并且由 Artemisia annua 毛状体藏匿了。然而,糟糕在 A.annua 遗体调整 artemisinin 的生合成和毛状体的发展的分子的基础理解。这里,我们报导那一个 AP2 抄写因素,毛状体和 ARTEMISININ 管理者 1 (TAR1 ) ,在在 A.annua 调整毛状体的发展和 artemisinin 的生合成起关键作用。TAR1,编码特殊位于原子核的蛋白质,主要在年轻叶子,花芽,和一些毛状体被表示。在 TAR1-RNAi 线,毛状体的形态学和表皮的蜡的作文被改变,并且 artemisinin 内容戏剧性地被减少它能被 TAR1 oeverexpression 显著地增加。当 TAR1 是 silenced 或 overexpressed 时,涉及 artemisinin 生合成的几关键基因的表示层次被改变。由 electrophoretic 活动性移动,酵母一个混血儿和短暂转变 -glucuronidase 试金,我们证明广告和 CYP71AV1,在 artemisinin 的生合成小径的二关键基因,是可能的 TAR1 的直接目标。一起拿,我们的结果显示 TAR1 是在 A.annua 调整毛状体开发和 artemisinin 生合成的分子的网络的一个关键部件。Hexin Tan Ling Xiao Shouhong Gao Qing Li Junfeng Chen Ying Xiao Qian Ji Ruibing Chen Wansheng Chen Lei Zhang 2015Molecular Plant2015,8,9:37
3Two CYP82D Enzymes Function as Flavone Hydroxylases in the Biosynthesis of Root-Specific 4'-Deoxyflavones in Scutellaria baicalensis显示文摘Baicalein, wogonin,和他们的 glycosides 是在药用的植物黄芩 baicalensis Georgi 发现的主要 bioactive 混合物。这些黄酮能在许多癌症房间线导致 apoptosis,但是没在正常房间上有效果。而且,他们为人的健康有许多另外的好处,例如抗氧化剂,抗病毒、肝保护的性质。这里,我们报导二 CYP450 酶, SbCYP82D1.1 和 SbCYP82D2 的隔离和描述,分别地,它在 S. 作为黄酮 6-hydroxylase (F6H ) 和黄酮 8-hydroxylase (F8H ) 工作 ? baicalensis。SbCYP82D1.1 为象 chrysin 和 apigenin 那样的黄酮有宽广底层特性并且在根和 S. 的天线部分为 baicalein 和 scutellarein 的生合成负责 ? baicalensis 分别地。当 SbCYP82D1.1 的表示被击倒时,当时, baicalin 和 baicalein 层次显著地被减少 chrysin glycosides 在毛乎乎的根积累。SbCYP82D2 是有高底层特性的 F8H,接受仅仅象它生产 norwogonin 的底层的 chrysin,尽管次要的 6-hydroxylation 活动能也被检测。种系发生的分析建议 SbCYP82D2 可能经由 neofunctionalization 跟随的基因复制从 SbCYP82D1.1 演变,祖先的 F6H 活动由此部分在导出的 SbCYP82D2 被保留。Qing Zhao Meng-Ying Cui Olesya Levsh Dongfeng Yang Jie Liu Jie Li Lionel Hill Lei Yang Yonghong Hu Jing-Ke Weng Xiao-Ya Chen Cathie Martin 2018Molecular Plant2018,11,1:30
4Telomerase activity in gastric cancer and its clinical implications显示文摘INTRODUCTIONThedevelopmentofcarcinomaresultsfrommultipleindependentgeneticchangesthatactivateprotooncogenesorinactivatetheac...ZHAN Wen Hua, MA Jin Ping, PENG Jun Sheng, GAO Jing Song, CAI Shi Rong, WANG Jian Ping, ZHENG Zhang Qing and WANG Lei 1999World Journal of Gastroenterology1999,5,4:25
5Oxidative stress in granulosa cells contributes to poor oocytequality and IVF-ET outcomes in women with polycystic ovarysyndrome显示文摘The increased levels of intraceHular reactive oxygen species (ROS) in granulosa cells (GCs) may allectthe pregnancy results in women with polycystic ovary syndrome (PCOS). In this study, we compared the in vitrofertilization and embryo transfer (IVF-ET) results of 22 patients with PCOS and 25 patients with tubal factorinfertility and detected the ROS levels in the GCs of these two groups. Results showed that the PCOS group hadsignificantly larger follicles on the administration day for human chorionic gonadotropin than the tubal factorgroup (P 〈 0.05); however, the number of retrieved oocytes was not significantly different between the two groups(P 〉 0.05). PCOS group had slightly lower fertilization, cleavage, grade IflI embryo, clinical pregnancy, andimplantation rates and higher miscarriage rate than the tubal factor group (P 〉 0.05). We further found asignificantly higher ROS level of GCs in the PCOS group than in the tubal factor group (P 〈 0.05). The increasedROS levels in GCs caused GC apoptosis, whereas NADPH oxidase 2 (NOX2) specific inhibitors (diphenyleneio-donium and apocynin) significantly reduced the ROS production in the PCOS group. In conclusion, the increasedROS expression levels in PCOS GCs greatly induced cell apoptosis, which further affected the oocyte quality andreduced the positive IVF-ET pregnancy results of women with PCOS. NADPH oxidase pathway may be involvedin the mechanism of ROS production in GCs of women with PCOS.Qiaohong Lai Wenpei Xiang Qing Li Hanwang Zhang Yufeng Li Guijin Zhu Chengliang Xiong Lei Jin 2018Frontiers of Medicine2018,12,5:26
6Recent advances in biosynthesis of bioactive compounds in traditional Chinese medicinal plants显示文摘Plants synthesize and accumulate large amount of specialized(or secondary) metabolites also known as natural products, which provide a rich source for modern pharmacy. In China, plants have been used in traditional medicine for thousands of years. Recent development of molecular biology, genomics and functional genomics as well as high-throughput analytical chemical technologies has greatly promoted the research on medicinal plants. In this article, we review recent advances in the elucidation of biosynthesis of specialized metabolites in medicinal plants,including phenylpropanoids, terpenoids and alkaloids. These natural products may share a common upstream pathway to form a limited numbers of common precursors, but are characteristic in distinct modifications leading to highly variable structures. Although this review is focused on traditional Chinese medicine, other plants with a great medicinal interest or potential are also discussed. Understanding of their biosynthesis processes is critical for producing these highly value molecules at large scale and low cost in microbes and will benefit to not only human health but also plant resource conservation.Lei Yang Changqing Yang Chenyi Li Qing Zhao Ling Liu Xin Fang Xiao-Ya Chen 2016Science Bulletin2016,61,1:23
7The Reference Genome Sequence of Scutellaria baicalensis Provides Insights into the Evolution of Wogonin Biosynthesis显示文摘Scutellaria baicalensis Georgi is important in Chinese traditional medicine where preparations of dried roots,'Huang Qin,' are used for liver and lung complaints and as complementary cancer treatments. We report a high-quality reference genome sequence for S. baicalensis where 93% of the 408.14-Mb genome has been assembled into nine pseudochromosomes with a super-N50 of 33.2 Mb. Comparison of this sequence with those of closely related species in the order Lamiales, sesamum indicum and Salvia splendens,revealed that a specialized metabolic pathway for the synthesis of 4'-deoxyflavone bioactives evolved in the genus Scu-tellaria. We found that the gene encoding a specific cinnamate coenzyme A ligase likely obtained its newfunc- tion following recent mutations, and that four genes encoding enzymes in the 4'-deoxyflavone pathway are present as tandem repeats in the genome of S. baicalensis. Further analyses revealed that gene duplications, segmental duplication, gene amplification, and point mutations coupled to gene neo- and subfunctionaliza-tions were involved in the evolution of 4'-deoxyflavone synthesis in the genus Scutellaria. Our study not only provides significant insight into the evolution of specific flavone biosynthetic pathways in the mint family, Lamiaceae, but also will facilitate the development of tools for enhancing bioactive productivity by metabolic engineering in microbes or by molecular breeding in plants. The reference genome of S. baicalensis is also useful for improving the genome assemblies for other members of the mint family and offers an important foundation for decoding the synthetic pathways of bioactive compounds in medicinal plants.Qing Zhao Jun Yang Meng-Ying Cui Jie Liu Yumin Fang Mengxiao Yan Wenqing Qiu Huiwen Shang Zhicheng Xu Reheman Yidiresi Jing-Ke Weng Tomas Pluskal Marielle Vigouroux Burkhard Steuernagel Yukun Wei Lei Yang Yonghong Hu Xiao-Ya Chen Cathie Martin 2019Molecular Plant2019,12,7:23
8Early nasogastric enteral nutrition for severe acute pancreatitis: A systematic review显示文摘AIM: To evaluate the effectiveness and safety of early nasogastric enteral nutrition (NGEN) for patients with severe acute pancreatitis (SAP). METHODS: We searched Cochrane Central Register of Controlled Trials (Issue 2, 2006), Pub-Medline (1966-2006), and references from relevant articles. We included randomized controlled trials (RCTs) only, which reported the mortality of SAP patients at least. Two reviewers assessed the quality of each trial and collected data independently. The Cochrane Collaboration’s RevMan 4.2.9 software was used for statistical analysis. RESULTS: Three RCTs were included, involving 131 patients. The baselines of each trial were comparable. Meta-analysis showed no significant differences in mortality rate of SAP patients between nasogastric and conventional routes (RR = 0.76, 95% CI = 0.37 and 1.55, P = 0.45), and in other outcomes, including time of hospital stay (weighted mean difference = -5.87, 95% CI = -20.58 and 8.84, P = 0.43), complication rate of infection (RR = 1.41, 95% CI = 0.62 and 3.23, P = 0.41) or multiple organ defi ciency syndrome (RR = 0.97, 95% CI = 0.27 and 3.47, P = 0.97), rate of admission to ICU (RR = 1.00, 95% CI = 0.48 and 2.09, P = 0.99) or conversion to surgery (RR = 0.66, 95% CI = 0.12 and 3.69, P = 0.64), as well as recurrence of re-feeding pain and adverse events associated with nutrition. CONCLUSION: Early NGEN is a breakthrough in the management of SAP. Based on current studies, early NGEN appears effective and safe. Since the available evidence is poor in quantity, it is hard to make an accurate evaluation of the role of early NGEN in SAP.Before recommendation to clinical practice, further high qualified, large scale, randomized controlled trials are needed.Kun Jiang Xin-Zu Chen Qing Xia Wen-Fu Tang Lei Wang 2007World Journal of Gastroenterology2007,13,39:21
9Effect of Chaiqinchengqi decoction on sarco/endoplasmic reticulum Ca^(2+)-ATPase mRNA expression of pancreatic tissues in acute pancreatitis rats显示文摘AIM: To investigate the effect of Chaiqinchengqi decoction (CQCQD) on sarco/endoplasmic reticulum Ca2+-ATPase (SERCA) mRNA expression of pancreatic tissues in acute pancreatitis (AP) rats. METHODS: Thirty Sprague-Dawley (SD) rats were randomized into control group, AP group and CQCQD group (n = 3 × 10). The rats in the CQCQD group were intragastrically administered with CQCQD (10 mL/kg every 2 h) after induction of AP by intraperitoneal injection of caerulein (50 μg/kg.h × 5) within 4 h. At 6 h after the induction of AP model, pancreatic tissues were collected for the pathological observation, mRNA extraction for determination of SERCA1 and SERCA2 mRNA expression or pancreatic acinar cell isolation for measurement of fluorescence intensity (FI) of intracellular calcium ion concentration [Ca2+]i. RESULTS: There was no expression of pancreatic SERCA1 mRNA in the control group and the AP group. The expression of pancreatic SERCA2 mRNA in the AP group was down-regulated (expression ratio = 0.536; P = 0.001) compared with the control group, while that in the CQCQD group was up-regulated (expression ratio= 2.00; P = 0.012) compared with AP group. The FI of intracellular [Ca2+] of pancreatic acinar cells in the AP group (138.2 ± 23.1) was higher than the C group (111.0 ± 18.4) and the CQCQD group (118.7 ± 15.2 ) (P < 0.05) and the pancreatic pathological score in the CQCQD group was lower than that in the AP group (5.7 ± 1.9 vs 9.2 ± 2.7, P < 0.05).CONCLUSION: CQCQD can up-regulate the expression of SERCA2 mRNA of pancreatic tissues, reduce intracellular calcium overload and relieve pancreatic tissue lesions.Ping Xue Li-Hui Deng Zhao-Da Zhang Xiao-Nan Yang Qing Xia Da-Kai Xiang Lei Huang Mei-Hua Wan 2008World Journal of Gastroenterology2008,14,15:20
10Impaired balance of T helper 17/T regulatory cells in carbon tetrachloride-induced liver fibrosis in mice显示文摘AIM:To investigate the effect of T helper(Th)17/T regulatory(Treg)cells on hepatic fibrosis in mice and its possible mechanism.METHODS:Hepatic fibrosis was induced by intraperitoneal injection of carbon tetrachloride.Hepatic pathological changes were observed by hematoxylin and eosin staining;the protein levels of interleukin(IL)-6,transforming growth factor(TGF)-βandα-smooth muscle actin(SMA)in liver tissue were determined by Western blotting;and the frequency of Th17 and Treg cells in the liver was estimated by flow cytometry.In addition,hepatic stellate cells were isolated from healthy mouse liver and co-cultured with Th17 or Treg cells.Immunofluorescence staining and Western blotting were performed to determine the change in HSC activation.RESULTS:In the model group,there were different degrees of fibroplasia,degeneration and necrosis.The protein levels of IL-6,TGF-βandα-SMA in liver tissue were significantly higher than those in the control group at 12 wk(P<0.05).Compared with the control group,the frequency of Th17 cells in the model group was increased but the frequency of Treg cells decreased gradually.Furthermore,at 4,8 and 12 wk,there were significant differences in the number of Th17 cells(0.52%±0.16%,1.46%±0.24%,and2.60%±0.41%,respectively,P<0.05)and Treg cells(2.99%±0.40%,2.16%±0.50%,and 1.49%±0.34%,respectively,P<0.05).In vitro,Th17 cells promoted,whereas Treg cells inhibited the expression ofα-SMA,both in a dose-dependent manner,compared with the control group.CONCLUSION:Th17/Treg imbalance exists in mice with liver fibrosis,which potentially promotes liver fibrosis via HSC activation.Xiao-Fei Sun Lei Gu Wen-Sheng Deng Qing Xu 2014World Journal of Gastroenterology2014,20,8:20
11Endobronchial ultrasound-guided transbronchial needle aspiration of undiagnosed mediastinal lymphadenopathy显示文摘背景 Endobronchial 指导超声的 transbronchial 针渴望( EBUS-TBNA )能取样由常规 bronchoscopy.It 不能到达的扩大 mediastinal 淋巴节点是一个相对简单、安全的方法在远处看见支气管的 tree.We 从2009年7月描述并且讨论它的起始的申请和我们的 experience.Methods 到2009年12月,有 undiagnosed 的 52 个病人扩大了 mediastinal 淋巴节点在人们的解放军队霍斯皮塔尔克将军与 EBUS-TBNATIAN Qing CHEN Liang-an WANG Hui-shuang ZHU Bao-hua TIAN Lei YANG Zhen AN Yang 2010Chinese Medical Journal2010,,16:19
12Biphasic insulin aspart 30 improved glycemic control in Chinese patients with type 2 diabetes poorly controlled on oral glucose-lowering drugs: a subgroup analysis of the A1chieve study显示文摘Chen Liming Xing Xiaoyan Lei Minxiang Liu Jie Shi Yongquan Li Pengqiu Qin Guijun Li Chengjiang Li Yukun Wang Qing Gao Tianshu Hu Ling Wang Yangwei Yang Wenying 2014Chinese Medical Journal2014,,2:19
13Summer atmospheric boundary layer structure in the hinterland of Taklimakan Desert, China显示文摘Understanding the characteristics of the structure of desert atmospheric boundary layer and its land surface process is of great importance to the simulations of regional weather and climate.To investigate the atmospheric boundary layer structure and its forming mechanism of Taklimakan Desert,and to improve the accuracy and precision of regional weather and climate simulations,we carried out a GPS radiosonde observation experiment in the hinterland of Taklimakan Desert from 25 June to 3 July,2015.Utilizing the densely observed sounding data,we analyzed the vertical structures of daytime convective boundary layer and nighttime stable boundary layer in summer over this region,and also discussed the impacts of sand-dust and precipitation events on the desert atmospheric boundary layer structure.In summer,the convective boundary layer in the hinterland of Taklimakan Desert developed profoundly and its maximum height could achieve 4,000 m;the stable boundary layer at nighttime was about 400–800-m thick and the residual mixing layer above it could achieve a thickness over 3,000 m.Sand-dust weather would damage the structures of nighttime stable boundary layer and daytime convective boundary layer,and the dust particle swarm can weak the solar radiation absorbed by the ground surface and further restrain the strong development of convective boundary layer in the daytime.Severe convective precipitation process can change the heat from the ground surface to the atmosphere in a very short time,and similarly can damage the structure of desert atmospheric boundary layer remarkably.Moreover,the height of atmospheric boundary layer was very low when raining.Our study verified the phenomenon that the atmospheric boundary layer with supernormal thickness exists over Taklimakan Desert in summer,which could provide a reference and scientific bases for the regional numerical models to better represent the desert atmospheric boundary layer structure.WANG Minzhong WEI Wenshou HE Qing YANG Yuhui FAN Lei ZHANG Jiantao 2016Journal of Arid Land2016,8,6:17
14Geographical characteristics of China’s wetlands derived from remotely sensed data显示文摘In this paper, we report the first wetland mapping of the entire China using Landsat enhanced thematic mapper plus (ETM+) data. These data were obtained from the Global Land Cover Facility at the University of Maryland spanning from 1999 to 2002. A total of 597 scenes of Landsat images were georeferenced and mosaiced. Manual image interpretation of satellite images was aided with elevation data, soil data, land cover/land use data and Google Earth. The minimum mapping unit is 10 pixel × 10 pixel, equivalent to 9 ha. The aim of our first round of mapping was only targeted at the boundary delineation of any type of wetland except those wetlands that are under agricultural use (i.e., paddy fields), which has already been well mapped by others. Our interpretation results indicate that a total of 359478 km2 of wetlands are of non-agricultural use. Among our preliminarily mapped wetland, 339353 km2 are inland wetland, 2786 km2 are non-agricultural artificial wetland, and 17609 km2 are coastal wetland. Because low-tide is rarely captured in satellite images, an under-estimation of coastal wetland is inevitable. We conducted some statistics based on our mapped wetlands and compared them with those previously obtained from a number of sources including a land cover/land use map made with satellite images during the late 1990s and early 2000s, a marshland map developed in approximately the same period, survey data of coastal wetland in early 1980s, and area data for approximately 400 larger patches of marshland in China compiled in 1996. Because some inconsistencies exist in the guidelines of those different wetland surveys, difference in area is expected. Some further comparison indicates that the wetland distributions derived from the preliminary wetland map are reasonable and more objective than other sources. The mapping process also indicated that the method adopted by us was efficient and cost-effective. We also found that in order to ensure comparability of the wetland maps developed at different times, a set of standard guidelines on the wetland categories to be mapped, and the mapping methods to be used must be well conceived, developed and effectively employed. We carried out some initial geographical analysis on the distribution of wetlands.NIU ZhenGuo GONG Peng CHENG Xiao GUO JianHong WANG Lin HUANG HuaBing SHEN ShaoQing WU YunZhao WANG XiaoFeng WANG XianWei YING Qing LIANG Lu ZHANG LiNa WANG Lei YAO Qian YANG ZhenZhong GUO ZiQi DAI YongJiu 2009Science China Earth Sciences2009,52,6:15
15Operative treatment for patients with cholelithiasis and liver cirrhosis显示文摘BACKGROUND:Liver cirrhosis and cholelithiasis are both familiar diseases in China.However,the rates of operative complications and death are still high in patients with these diseases.This study was designed to determine the operative indications as well as suitable procedures in the treatment of patients with cholelithiasis and liver cirrhosis. METHODS:We studied retrospectively 60 patients with cholelithiasis and liver cirrhosis who had undergone operation from January 2000 to July 2006.We analyzed the loss of blood during operation,postoperative complications and death rate to determine the proper treatment. RESULTS:Fifty patients were cured and 10(16.7%)died postoperatively,i.e.,six patients died from hepatic-renal failure and multisystem organ dysfunction and 4 from massive bleeding in the gallbladder bed.The 10 patients were clearly correlated with the Child-Pugh classification: Child A(8%),Child B(20%)and Child C(30%). Postoperative bleeding occurred in 10 patients(16.7%), intraabdominal in 6 and gastrointestinal in 4.Seven of the 10 patients with bleeding died postoperatively. CONCLUSIONS:The proper perioperative management of patients with cholelithiasis and liver cirrhosis can decrease the mortality.Cholelithiasis should be managed first by emergency operation.It is safe for the patients of Child A to undergo laparoscopy.It is very safe for patients with cirrhosis and cholelithiasis to undergo devascularization and shunt operation followed by biliary tract surgery.Xu, Qing Gu, Lei Wu, Zhi-Yong 2007Hepatobiliary & Pancreatic Diseases International2007,6,5:15
16Treatment of osteoporotic intertrochanteric fractures by zoledronic acid injection combined with proximal femoral nail anti-rotation显示文摘观察在 osteoporotic intertrochanteric 的处理与 zoledronic 酸注射相结合的近似大腿骨的钉子反旋转(PFNA ) 的临床的结果的目的断裂在老。有 osteoporotic intertrochanteric 破裂的 60 个老病人用一台双精力 X 光检查骨头密度仪器被诊断的方法。病人们随机被划分成治疗或控制组(在每个组的 30 个盒子) 。在两个组的病人被关上 / 打开的减小和内部固定用 PFNA 对待。在治疗组,病人们收到了一 zoledronic 5 mg/100 ml 经由的磷的酸注射静脉内滴下,除了 Caltrate D (qd ) 和 alpha 骨化酒精(qd ) 的 0.25 g 的 600 mg。控制组收到了 Caltrate D (qd ) 和 alpha 骨化酒精(qd ) 的 0.25 g 的 600 mg。口头的药被管理 12 个月。骨头疼痛地势在骨头矿物质密度(BMD ) 被观察,并且变化腰部并且健康方面臀部被记录。临床的结果被评估用视觉类似物规模(管) ,哈里斯关节功能分数,和生活优秀的骨质疏松症可伸缩(OQOLS ) 。结果与控制组,相比,骨头疼痛症状显著地被减轻(p 1-4 , 大腿骨的颈和 trochanter (p p = 0.04 ) 。在处理组的盒子在控制组比那些更快速愈合了[(13 景漠瑳潥潰潲楴? 湩整瑲潲档湡整楲? 牦捡畴敲 ? 祢稠汯摥潲楮 ? 捡摩椠橮' 虡 N 湯挠浯楢敮 ? 楷桴瀠潲楸慭? 敦潭慲? 慮汩愠瑮 ?Yong Li Wen-Bo Zhao De-Li Wang Qing He Qin Li Fu-Xing Pei Lei Liu 2016Chinese Journal of Traumatology2016,19,5:15
17Effect of human umbilical cord-derived mesenchymal stem cells on lung damage in severe COVID-19 patients:a randomized,double-blind,placebo-controlled phase 2 trial显示文摘Treatment of severe Coronavirus Disease 2019(COVID-19)is challenging.We performed a phase 2 trial to assess the efficacy andsafety of human umbilical cord-mesenchymal stem cells(UC-MScs)to treat severe coViD-19 patients with lung damage,based onour phase 1 data.In this randomized,double-blind,and placebo-controlled trial,we recruited 101 severe coVID-19 patients withlung damage.They were randomly assigned at a 2:1 ratio to receive either UC-MSCs(4×10^(7)cells per infusion)or placebo on day 0,3,and 6.The primary endpoint was an altered proportion of whole lung lesion volumes from baseline to day 28.Other imagingoutcomes,6-minute walk test(6-MWT),maximum vital capacity,diffusing capacity,and adverse events were recorded and analyzed.In all,100 COVID-19 patients were finally received either UC-MSCs in=65)or placebo(n=35).UC-MSCs administrationexerted numerical improvement in whole lung lesion volume from baseline to day 28 compared with the placebo(the mediandifference was-13.31%,95%Cl-29.14%,2.13%,P=0.08).UC-MSCs significanty reduced the proportions of solid componentlesion volume compared with the placebo(median difference:-15.45%;95%CI-30.82%,-0.39%;P=0.043).The 6-MWT showedan increased distance in patients treated with UC-MSCs(difference:27.00 m;95%CI 0.00,57.00;P=0.057).The incidence of adverseevents was similar in the two groups.These results suggest that UC-MSCs treatment is a safe and potentially effective therapeuticapproach for COVID-19 patients with lung damage.A phase 3 trial is required to evaluate effects on reducing mortality andpreventing long-term pulmonary disability.Lei Shi Hai Huang Xuechun Lu Xiaoyan Yan Xiaojing Jiang Ruonan Xu Siyu Wang Chao Zhang Xin Yuan Zhe Xu Lei Huang Jun-Liang Fu Yuanyuan Li Yu Zhang Wei-Qi Yao Tianyi Liu Jinwen Song Liangliang Sun Fan Yang Xin Zhang Bo Zhang Ming Shi Fanping Meng Yanning Song Yongpei Yu Jiqiu Wen Qi Li Qing Mao Markus Maeurer Alimuddin Zumla Chen Yao Wei-Fen Xie Fu-Sheng Wang 2021Signal Transduction and Targeted Therapy2021,6,3:13
18Impact of Traffic Emissions on Local Air Quality and the Potential Toxicity of Traffic-related Particulates in Beijing, China显示文摘Objective Air-borne particulates from different sources could have different physicochemical properties and inflammatory potentials. This study aims to characterize the chemical compositions and the toxicity of ambient particulate matter (PM) associated with traffic emissions. Methods The concentrations of trace elements, organic carbon (OC), elemental carbon (EC) and polycyclic aromatic hydrocarbons (PAHs) in PM 2.5 and PM 10 were measured in samples collected at sites in Beijing, China. Their toxic effects on the pulmonary system of rats were investigated. Biochemical parameters (LDH, T-AOC, TP) and inflammatory cytokine(IL-6, IL-1, TNF-α) levels were measured in the lungs of rats exposed to traffic-related PM. Oxidative damage was observed. PM samples were taken from a near road site and an off road site in summer time in 2006. Results The concentrations of the USEPA priority pollutant PAHs in both PM 10 and PM 2.5 were higher (299.658 and 348.412) at the near road site than those (237.728 and 268.472) at the off road site. The similar trend was observed for the concentrations of trace elements in PM. Compared to coarse particles (PM 10 ), fine particles (PM 2.5 ) have a greater adsorption capacity to enrich toxic elements than inhalable particles. Decrease in antioxidant capacity and an increase in the amount of lipid peroxidation products in rat lung tissues was observed. Conclusion The findings of the present study suggest that the differing inflammatory responses of PM collected from the two road sites might have been mediated by the differing physicochemical characteristics.TIAN Lei ZHANG Wei LIN Zhi Qing ZHANG Hua Shan XI Zhu Ge CHEN Jian Hua WANG Wei 2012Biomedical and Environmental Sciences2012,25,6:13
19Isolation, identification and genomic characterization of the Asian lineage Zika virus imported to China显示文摘Dear Editor,Zika virus(ZIKV)used to be an unknown mosquito-borne flavivirus,and maintained its limited sylvatic circulation in a few African and Asian countries(Enfissi et al.,2016).Based on available clinical data,the symptoms in human infections with ZIKV are supposed to be similar to other arbovirus infections such as dengue,and characterized by fever,skin rashes,conjunctivitis,muscle and joint pain,malaise,and headache(Duffy et al.,2009).However。Yong-Qiang Deng Hui Zhao Xiao-Feng Li Na-Na Zhang Zhong-Yu Liu Tao Jiang Da-Yong Gu Lei Shi Jian-An He Hong-Jiang Wang Zhao-Zeng Sun Qing Ye Dong-Yang Xie Wu-Chun Cao Cheng-Feng Qin 2016Science China(Life Sciences)2016,59,4:13
20N-methyl-D-aspartic acid receptor 1 (NMDAR1) aggravates secondary inflammatory damage induced by hemin-NLRP3 pathway after intracerebral hemorrhage显示文摘Xun Weng Yan Tan Xiang Chu Xiao-Feng Wu Rui Liu Yue Tian Lin Li Feng Guo Qing Ouyang Lei Li 2015Chinese Journal of Traumatology2015,18,5:12
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