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12018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents显示文摘Syncope belongs to the transient loss of consciousness(TLOC), characterized by a rapid onset, short duration, and spontaneous complete recovery. It is common in children and adolescents, accounting for 1% to 2% of emergency department visits.Recurrent syncope can seriously affect children's physical and mental health, learning ability and quality of life and sometimes cardiac syncope even poses a risk of sudden death. The present guideline for the diagnosis and treatment of syncope in children and adolescents was developed for guiding a better clinical management of pediatric syncope. Based on the globally recent development and the evidence-based data in China, 2018 Chinese Pediatric Cardiology Society(CPCS) guideline for diagnosis and treatment of syncope in children and adolescents was jointly prepared by the Pediatric Cardiology Society, Chinese Pediatric Society, Chinese Medical Association(CMA)/Committee on Pediatric Syncope, Pediatricians Branch, Chinese Medical Doctor Association(CMDA)/Committee on Pediatric Cardiology, Chinese College of Cardiovascular Physicians, Chinese Medical Doctor Association(CMDA)/Pediatric Cardiology Society, Beijing Pediatric Society, Beijing Medical Association(BMA). The present guideline includes the underlying diseases of syncope in children and adolescents, the diagnostic procedures, methodology and clinical significance of standing test and headup tilt test, the clinical diagnosis vasovagal syncope, postural orthostatic tachycardia syndrome, orthostatic hypotension and orthostatic hypertension, and the treatment of syncope as well as follow-up.Cheng Wang Yaqi Li Ying Liao Hong Tian Min Huang Xiangyu Dong Lin Shi Jinghui Sun Hongfang Jin Junbao Du Jindou An Jie Chen Mingwu Chen Qi Chen Sun Chen Yonghong Chen Zhi Chen Adolphus Kai-tung Chau Junbao Du Zhongdong Du Junkai Duan Hongyu Duan Xiangyu Dong Lin Feng Lijun Fu Fangqi Gong Yonghao Gui Ling Han Zhenhui Han Bing He Zhixu He Xiufen Hu Yimin Hua Guoying Huang Min Huang Ping Huang Yujuan Huang Hongfang Jin Mei Jin Bo Li Fen Li Tao Li Xiaohui Li Xiaoyan Liu Yan Li Haitao Lv Tiewei Lv Zipu Li Luyi Ma Silin Pan Yusheng Pang Hua Peng Yuming Qin Jie Shen Lin Shi Kun Sun Jinghui Sun Hong Tian Jie Tian Cheng Wang Hong Wang Lei Wang Jinju Wang Wendi Wang Yuli Wang Rongzhou Wu Tianhe Xia Yanyan Xiao Chunhong Xie Yanlin Xing Zhenyu Xiong Baoyuan Xu Yi Xu Hui Yan Shiwei Yang Qijian Yi Xia Yu Xianyi Yu Yue Yuan Hongyan Zhang Huili Zhang Li Zhang Qingyou Zhang Xi Zhang Yanmin Zhang Zhiwei Zhang Cuifen Zhao Bin Zhou Hua Zhu 2018Science Bulletin2018,63,23:54
2Puerarin protects rat brain against ischemia/reperfusion injury by suppressing autophagy via the AMPK-mT OR-ULK1 signaling pathway显示文摘Puerarin suppresses autophagy to alleviate cerebral ischemia/reperfusion injury, and accumulating evidence indicates that the AMPKm TOR signaling pathway regulates the activation of the autophagy pathway through the coordinated phosphorylation of ULK1. In this study, we investigated the mechanisms underlying the neuroprotective effect of puerarin and its role in modulating autophagy via the AMPK-m TOR-ULK1 signaling pathway in the rat middle cerebral artery occlusion model of cerebral ischemia/reperfusion injury. Rats were intraperitoneally injected with puerarin, 50 or 100 mg/kg, daily for 7 days. Then, 30 minutes after the final administration, rats were subjected to transient middle cerebral artery occlusion for 90 minutes. Then, after 24 hours of reperfusion, the Longa score and infarct volume were evaluated in each group. Autophagosome formation was observed by transmission electron microscopy. LC3, Beclin-1 p62, AMPK, m TOR and ULK1 protein expression levels were examined by immunofluorescence and western blot assay. Puerarin substantially reduced the Longa score and infarct volume, and it lessened autophagosome formation in the hippocampal CA1 area following cerebral ischemia/reperfusion injury in a dose-dependent manner. Pretreatment with puerarin(50 or 100 mg/kg) reduced Beclin-1 expression and the LC3-II/LC3-I ratio, as well as p-AMPK and p S317-ULK1 levels. In comparison, it increased p62 expression. Furthermore, puerarin at 100 mg/kg dramatically increased the levels of p-m TOR and p S757-ULK1 in the hippocampus on the ischemic side. Our findings suggest that puerarin alleviates autophagy by activating the APMK-m TOR-ULK1 signaling pathway. Thus, puerarin might have therapeutic potential for treating cerebral ischemia/reperfusion injury.Jin-Feng Wang Zhi-Gang Mei Yang Fu Song-Bai Yang Shi-Zhong Zhang Wei-Feng Huang Li Xiong Hua-Jun Zhou Wei Tao Zhi-Tao Feng 2018Neural Regeneration Research2018,13,6:45
3Magnetic resonance diffusion tensor imaging following major ozonated autohemotherapy for treatment of acute cerebral infarction显示文摘Major ozonated autohemotherapy has been shown to promote recovery of upper limb motor function in patients with acute cerebral infarction,but whether major ozonated autohemotherapy affects remote injury remains poorly understood.Here,we assumed that major ozonated autohemotherapy contributes to recovery of clinical function,possibly by reducing remote injury after acute cerebral infarction.Sixty acute cerebral infarction patients aged 30–80 years were equally and randomly allocated to ozone treatment and control groups.Patients in the ozone treatment group received medical treatment and major ozonated autohemotherapy(47 mg/L,100 m L ozone) for 10 ± 2 days.Patients in the control group received medical treatment only.National Institutes of Health Stroke Scale score,modified Rankin scale score,and reduced degree of fractional anisotropy values of brain magnetic resonance diffusion tensor imaging were remarkably decreased,brain function improved,clinical efficiency significantly increased,and no obvious adverse reactions detected in the ozone treatment group compared with the control group.These findings suggest that major ozonated autohemotherapy promotes recovery of neurological function in acute cerebral infarction patients by reducing remote injury,and additionally,exhibits high safety.Xiao-na Wu Tao Zhang Jun Wang Xiao-yan Liu Zhen-sheng Li Wei Xiang Wei-qing Du Hong-jun Yang Tie-gen Xiong Wen-ting Deng Kai-run Peng Su-yue Pan 2016Neural Regeneration Research2016,11,7:32
4Augmented reality and virtual reality displays:emerging technologies and future perspectives显示文摘With rapid advances in high-speed communication and computation,augmented reality(AR)and virtual reality(VR)are emerging as next-generation display platforms for deeper human-digital interactions.Nonetheless,to simultaneously match the exceptional performance of human vision and keep the near-eye display module compact and lightweight imposes unprecedented challenges on optical engineering.Fortunately,recent progress in holographic optical elements(HOEs)and lithography-enabled devices provide innovative ways to tackle these obstacles in AR and VR that are otherwise difficult with traditional optics.In this review,we begin with introducing the basic structures of AR and VR headsets,and then describing the operation principles of various HOEs and lithography-enabled devices.Their properties are analyzed in detail,including strong selectivity on wavelength and incident angle,and multiplexing ability of volume HOEs,polarization dependency and active switching of liquid crystal HOEs,device fabrication,and properties of micro-LEDs(light-emitting diodes),and large design freedoms of metasurfaces.Afterwards,we discuss how these devices help enhance the AR and VR performance,with detailed description and analysis of some state-of-the-art architectures.Finally,we cast a perspective on potential developments and research directions of these photonic devices for future AR and VR displays.Jianghao Xiong En-Lin Hsiang Ziqian He Tao Zhan Shin-Tson Wu 2021Light(Science & Applications)2021,10,11:27
5Metabolic dysregulation and emerging therapeutical targets for hepatocellular carcinoma显示文摘Hepatocellular carcinoma(HCC)is an aggressive human cancer with increasing incidence worldwide.Multiple efforts have been made to explore pharmaceutical therapies to treat HCC,such as targeted tyrosine kinase inhibitors,immune based therapies and combination of chemotherapy.However,limitations exist in current strategies including chemoresistance for instance.Tumor initiation and progression is driven by reprogramming of metabolism,in particular during HCC development.Recently,metabolic associated fatty liver disease(MAFLD),a reappraisal of new nomenclature for nonalcoholic fatty liver disease(NAFLD),indicates growing appreciation of metabolism in the pathogenesis of liver disease,including HCC,thereby suggesting new strategies by targeting abnormal metabolism for HCC treatment.In this review,we introduce directions by highlighting the metabolic targets in glucose,fatty acid,amino acid and glutamine metabolism,which are suitable for HCC pharmaceutical intervention.We also summarize and discuss current pharmaceutical agents and studies targeting deregulated metabolism during HCC treatment.Furthermore,opportunities and challenges in the discovery and development of HCC therapy targeting metabolism are discussed.Danyu Du Chan Liu Mengyao Qin Xiao Zhang Tao Xi Shengtao Yuan Haiping Hao Jing Xiong 2022Acta Pharmaceutica Sinica B2022,12,2:27
6Delayed ethyl pyruvate therapy attenuates experimental severe acute pancreatitis via reduced serum high mobility group box 1 levels in rats显示文摘AIM: To investigate the effect of delayed ethyl pyruvate (EP) delivery on distant organ injury, survival time and serum high mobility group box 1 (HMGB1) levels in rats with experimental severe acute pancreatitis (SAP). METHODS: A SAP model was induced by retrograde injection of artificial bile into the pancreatic ducts of rats. Animals were divided randomly into three groups (n = 32 in each group): sham group, SAP group and delayed EP treatment group. The rats in the delayed EP treatment group received EP (30 mg/kg) at 12 h, 18 h and 30 h after induction of SAP. Animals were sacrificed, and samples were obtained at 24 h and 48 h after induction of SAP. Serum HMGB1, aspartate aminotransferase (AST), alanine aminotransferase (ALT), blood urea nitrogen (BUN), and creatinine (Cr) levels were measured. Lung wet-to-dry-weight (W/D) ratios and histological scores were calculated to evaluate lung injury. Additional experiments were performed between SAP and delayed EP treatment groups to study the in? uence of EP on survival times of SAP rats. RESULTS: Delayed EP treatment significantly reduced serum HMGB1 levels, and protected against liver, renal and lung injury with reduced lung W/D ratios (8.22 ±0.42 vs 9.76 ± 0.45, P < 0.01), pulmonary histological scores (7.1 ± 0.7 vs 8.4 ± 1.1, P < 0.01), serum AST (667 ± 103 vs 1 368 ± 271, P < 0.01), ALT (446 ± 91 vs 653 ± 98, P < 0.01) and Cr (1.2 ± 0.3 vs 1.8 ± 0.3, P < 0.01) levels. SAP rats had a median survival time of 44 h. Delayed EP treatment signifi cantly prolonged median survival time to 72 h (P < 0.01). CONCLUSION: Delayed EP therapy protects against distant organ injury and prolongs survival time via reduced serum HMGB1levels in rats with experimental SAP. EP may potentially serve as an effective new therapeutic option against the inflammatory response and multiple organ dysfunction syndrome (MODS) in SAP patients.Zhi-Yong Yang Yan Ling Tao Yin Jing Tao Jiong-Xin Xiong He-Shui Wu Chun-You Wang 2008World Journal of Gastroenterology2008,14,28:23
7Genome analysis of Taraxacum kok-saghyz Rodin provides new insights into rubber biosynthesis显示文摘The Russian dandelion Taraxacum kok-saghyz Rodin(TKS), a member of the Composite family and a potential alternative source of natural rubber(NR) and inulin, is an ideal model system for studying rubber biosynthesis. Here we present the draft genome of TKS, the first assembled NR-producing weed plant. The draft TKS genome assembly has a length of 1.29 Gb, containing 46 731 predicted protein-coding genes and68.56% repeats, in which the LTR-RT elements predominantly contribute to the genome enlargement. We analyzed the heterozygous regions/genes, suggesting its possible involvement in inbreeding depression.Through comparative studies between rubber-producing and non-rubber-producing plants, we found that enzymes of the mevalonate(MVA) pathway and rubber elongation might be critical for rubber biosynthesis, and several key isoforms have been isolated and shown to be predominantly expressed in the latex, indicating their crucial functions in rubber biosynthesis. Moreover, for two important families in rubber elongation, the CPT/CPTL and REF/SRPP families, diverse evolutionary tracks have been revealed. These results provide valuable resources and new insights into the mechanism of NR biosynthesis,and facilitate the development of alternative NR-producing crops.Tao Lin Xia Xu Jue Ruan Shizhong Liu Shigang Wu Xiujuan Shao Xiaobo Wang Lin Gan Bi Qin Yushuang Yang Zhukuan Cheng Suhua Yang Zhonghua Zhang Guosheng Xiong Sanwen Huang Hong Yu Jiayang Li 2018National Science Review2018,5,1:22
8Effect of Cesarean Section on the Severity of Postpartum Hemorrhage in Chinese Women: The Shanxi Study显示文摘Chang XU Qiang FU Hong-bing TAO Xiao-jun LIN Man-li WANG Shu-xu XIA Hao-ling XIONG 2018Current Medical Science2018,38,4:22
9A Strigolactone Biosynthesis Gene Contributed to the Green Revolution in Rice显示文摘Plant architecture is a complex agronomic trait and a major factor of crop yield,which is affected by several important hormones.Strigolactones(SLs)are identified as a new class hormoneinhibiting branching in many plant species and have been shown to be involved in various developmental processes.Genetical and chemical modulation of the SL pathway is recognized as a promising approach to modify plant architecture.However,whether and how the genes involved in the SL pathway could be utilized in breeding still remain elusive.Here,we demonstrate that a partial loss-of-function allele of the SL biosynthesis gene,HIGH TILLERING AND DWARF 1/DWARF17(HTD1/D17),which encodes CAROTENOID CLEAVAGE DIOXYGENASE 7(CCD7),increases tiller number and improves grain yield in rice.We found that the HTD1 gene had been widely utilized and co-selected with Semidwarf 1(SD1),both contributing to the improvement of plant architecture in modern rice varieties since the Green Revolution in the 1960s.Understanding how phytohormone pathway genes regulate plant architecture and how they have been utilized and selected in breeding will lay the foundation for developing the rational approaches toward improving crop yield.Yuexing Wang Lianguang Shang Hong Yu Longjun Zeng Jiang Hu Shen Ni Yuchun Rao Sanfeng Li Jinfang Chu Xiangbing Meng Lei Wang Ping Hu Jijun Yan Shujing Kang Minghao Qu Hai Lin Tao Wang Quan Wang Xingming Hu Hongqi Chen Bing Wang Zhenyu Gao Longbiao Guo Dali Zeng Xudong Zhu Guosheng Xiong Jiayang Li Qian Qian 2020Molecular Plant2020,13,6:23
10Isolation and biological analysis of tumor stem cells from pancreatic adenocarcinoma显示文摘AIM: To explore the method of isolation and biological analysis of tumor stem cells from pancreatic adenocarcinoma cell line PANC-1. METHODS: The PANC-1 cells were cultured in Dulbecco modified eagle medium F12 (1:1 volume) (DMEM-F12) supplemented with 20% fetal bovine serum (FBS). Subpopulation cells with properties of tumor stem cells were isolated from pancreatic adenocarcinoma cell line PANC-1 according to the cell surface markers CD44 and CD24 by flow cytometry. The proliferative capability of these cells in vitro were estimated by 3-[4,5-dimehyl-2-thiazolyl]-2,5-diphenyl-2H-tetrazolium bromide (MTT) method. And the tumor growth of different subpopulation cells which were injected into the hypodermisof right and left armpit of nude mice was studied,and expression of CD44 and CD24 of the CD44+CD24+ cell-formed nodules and PANC-1 cells were detected by avidin-biotin-peroxidase complex (ABC) immunohistochemical staining. RESULTS: The 5.1%-17.5% of sorted PANC-1 cells expressed the cell surface marker CD44,57.8% -70.1% expressed CD24,only 2.1%-3.5% of cells were CD44+ CD24+. Compared with CD44-CD24-cells,CD44+CD24+ cells had a lower growth rate in vitro. Implantation of 104 CD44-CD24-cells in nude mice showed no evidenttumor growth at wk 12. In contrast,large tumors were found in nude mice implanted with 103 CD44+CD24+ cells at wk 4 (2/8),a 20-fold increase in tumorigenic potential (P < 0.05 or P < 0.01). There was no obvious histological difference between the cells of the CD44+CD24+ cell-formed nodules and PANC-1 cells. CONCLUSION: CD44 and CD24 may be used as the cell surface markers for isolation of pancreatic cancer stem cells from pancreatic adenocarcinoma cell line PANC-1. Subpopulation cells CD44+CD24+ have properties of tumor stem cells. Because cancer stem cells are thought to be responsible for tumor initiation and its recurrence after an initial response to chemotherapy,it may be a very promising target for new drug development.Peng Huang Chun-YouWang Shan-Miao Gou He-Shui Wu Tao Liu Jiang-Xin Xiong 2008World Journal of Gastroenterology2008,14,24:19
11Advanced Space-based Solar Observatory(ASO-S):an overview显示文摘The Advanced Space-based Solar Observatory(ASO-S)is a mission proposed for the 25 th solar maximum by the Chinese solar community.The scientific objectives are to study the relationships between the solar magnetic field,solar flares and coronal mass ejections(CMEs).Three payloads are deployed:the Full-disk vector Magneto Graph(FMG),the Lyman-αSolar Telescope(LST)and the Hard X-ray Imager(HXI).ASO-S will perform the first simultaneous observations of the photospheric vector magnetic field,non-thermal imaging of solar flares,and the initiation and early propagation of CMEs on a single platform.ASO-S is scheduled to be launched into a 720 km Sun-synchronous orbit in 2022.This paper presents an overview of the mission till the end of Phase-B and the beginning of Phase-C.Wei-Qun Gan Cheng Zhu Yuan-Yong Deng Hui Li Yang Su Hai-Ying Zhang Bo Chen Zhe Zhang Jian Wu Lei Deng Yu Huang Jian-Feng Yang Ji-Jun Cui Jin Chang Chi Wang Ji Wu Zeng-Shan Yin Wen Chen Cheng Fang Yi-Hua Yan Jun Lin Wei-Ming Xiong Bin Chen Hai-Chao Bao Cai-Xia Cao Yan-Ping Bai Tao Wang Bing-Long Chen Xin-Yu Li Ye Zhang Li Feng Jiang-Tao Su Ying Li Wei Chen You-Ping Li Ying-Na Su Hai-Yan Wu Mei Gu Lei Huang Xue-Jun Tang 2019Research in Astronomy and Astrophysics2019,19,11:17
12Vascularity of hepatic VX2 tumors of rabbits: Assessment with conventional power Doppler US and contrast enhanced harmonic power Doppler US显示文摘AIM: To investigate the characteristics of the vascularity ofhepatic metastasis.METHODS: Six New Zealand rabbits, weighing averagely2.7±0.4 kg, were selected and operated to establish hepaticVX2 tumor carrier model. Hepatic VX2 tumors were thenimaged with conventional B mode US, second harmonicimaging (SHI), color Doppler flow imaging (CDFI), powerDoppler imaging (PDI) and harmonic PDI by a transducerS8 connected to HP-5 500 ultrasound system. A kind of selfmade echo contrast agent was intravenously injected at adose of 0.01 mL/kg through ear vein, and then the venouspassage was cleaned with sterilized saline.RESULTS: Totally, 6 hypoechoic lesions and 3 hyperechoiclesions were found in the six carrier rabbits with a mean sizeabout 2.1±0.4 cm under conventional B mode ultrasound, theywere oval or round in shape with a dear outline or a hypoechoichalo at the margin of the lesions. Contrast agent could notchange the echogenicity of the lesions under conventional Bmode and SHI, however, it could greatly increase the flowsensitivity of the lesions under PDI and harmonic PDI. Nutrientartery of these metastatic lesions might also be well depictedunder contrast enhanced PDI and harmonic PDI.CONCLUSION: Our result suggested that contrast enhancedPDI, especially harmonic PDI, was a promised method inthe detection of vascularity of hepatic tumor nodules.Wen-Hua Du Wei-Xiao Yang Xiang Wang Xiu-Qin Xiong Yi Zhou Tao Li Department of US, Daping Hospital & Research Institute of Surgery, the Third Military Medical University, Chongqing 400042, China 2003World Journal of Gastroenterology2003,9,2:17
13Hyperhomocysteinemia-mediated DNA Hypomethylation and its Potential Epigenetic Role in Rats显示文摘Hyperhomocysteinemia (HHcy ) 它是为动脉粥样硬化,基因表达的力量原因 dysregulation,而是特征和关键连接的一个独立风险因素在它的病原的机制包含了仍然糟糕被理解。学习是在 DNA methylation 和人半胱氨酸(Hcy ) 的内在的机制上调查 HHcy 的效果的礼品的目的导致了 DNA methylation.HHcy 在 4 星期一本低、中等或高的蛋氨酸食谱以后在 Sprague-Dawley 老鼠被导致。全部的人半胱氨酸的层次,S-腺苷甲硫氨酸( AdoMet ) andS-adenosylhomocysteine ( AdoHcy )被基因的高效的液体 chromatography.Theexpression 层次检测,S-腺苷高半胱氨酸水疗院的蛋白质放射激光, DNA methyltransferaseand methyl-CpG-binding 领域 2 被即时反向的抄写聚合酶链反应和蛋白质印迹 analysis.A 检测高产量的量的 methylation 试金 基于usingfluorescence 的即时聚合酶链反应被采用决定 DNAmethylation.The 结果的层次显示 HHcy 导致了 AdoHcy 集中的举起, AdoMet 集中的衰落, AdoMet/AdoHcy 和 RNA 和蛋白质表示 ofS-adenosylhomocysteine 水疗院的比率放射激光并且 methyl-CpG-binding 领域 2 ,以及 DNAmethyltransferase 的增加活动。与不同 methylation 依赖的限制 endonucleases,异常 demethylation 被发现喜欢 CCGG 序列而不是 CpG 岛。在 B1 重复元素的 HHcysignificantly 增加的染色体 hypomethylation 的增加的层次。HHcy 的不同层次的影响证明 HHcy 的改变的有害效果能通过不同机制被归因于不同集中。在温和、中等的 HHcy, Hcy 可能首先通过 transferringmethyl 组新陈代谢的干扰影响基因表达的 epigenetic 规定。在高 Hcy 集中,然而,影响可能通过氧化应力, apoptosis 和发炎是更有害的。Yideng JIANG Tao SUN Jiantuan XIONG Jun CAO Guizhong LI Shuren WANG 2007Acta Biochimica et Biophysica Sinica2007,39,9:16
14Clinical Utility of the Ratio Between Circulating Fibrinogen and Fibrin (ogen) Degradation Products for Evaluating Coronary Artery Disease in Type 2 Diabetic Patients显示文摘Background: We investigated whether and to what extent the ratio between circulating fibrinogen (Fg) and its degradation products (FDP) reflects the severity of coronary artery disease (CAD) in type 2 diabetic patients. Methods: Plasma levels of Fg and FDP were determined, and Fg/FDP ratio was calculated in 344 consecutive patients with type 2 diabetes and chest pain on exertion undergoing coronary angiography. The severity of CAD was evaluated by the number of significant CAD (〉50% luminal diameter narrowing) and Gensini score. Results: Plasma Fg was higher, but Fg/FDP ratio was lower in patients with significant CAD (n = 255) compared with those without (n = 89), due to a disproportionate increase in FDP. Fg and FDP correlated positively, while Fg/FDP ratio negatively, with the number of diseased coronary arteries and the tertile of Gensini score (all P values for trend 〈 0.01). After adjusting for age, sex, risk factors for CAD, lipid profiles, glycosylated hemoglobin A1 c, creatinine, leukocyte count, and high-sensitivity C-reactive protein, Fg/FDP ratio remained an independent determinant for multivessel coronary disease (MVD) (odds ratio [OR], 0.869; 95% confidence interval [C/], 0.788~).958, P = 0.005) and high tertile of Gensini score (OR, 0.797, 95% CI, 0.682-0.930, P = 0.004). The area under the curve of Fg/FDP ratio was larger than that of Fg for predicting the presence of MVD (0.647 vs. 0.563, P = 0.048) and Gensini score 〉 30 (0.656 vs. 0.538, P = 0.026). Conclusions: Elevated plasma Fg and FDP level and reduced Fg/FDP ratio are associated with presence of CAD, and Fg/FDP ratio is superior to Fg in reflecting severe coronary atherosclerosis for patients with type 2 diabetes.Wei-Xin Xiong Ying Shen Dao-Peng Dai Lin Lu Qi Zhang Rui-Yan Zhang Wei-Feng Shen Rong Tao 2015Chinese Medical Journal2015,,6:16
15Changes in China’s lakes: climate and human impacts显示文摘Lakes have played a critical role in providing water and ecosystem services for people and other organisms in China for millennia.However,accelerating climate change and economic boom have resulted in unprecedented changes in these valuable lakes.Using Landsat images covering the entity of the country,we explored the changes in China’s lakes and the associated driving forces over the last 30 years(i.e.mid-1980 s to 2015).We discovered that China’s lakes have changed with divergent regional trends:in the sparsely populated Tibetan Plateau,lakes are abundant and the lake area has increased dramatically from 38596 to46831 km^2(i.e.increased by 8235 km^2,or 21.3%),whereas,in the densely populated northern and eastern regions,lakes are relatively scarce and the lake area has decreased from 36659 to 33657 km^2(i.e.decreased by 3002 km^2,or 8.2%).In particular,severe lake decreases occurred in the Mongolia-Xinjiang Plateau and the Eastern Plain(-2151 km^2).Statistical analyses indicated that climate was the most important factor controlling lake changes in the Tibetan Plateau,the Yun-Gui Plateau and the Northeast Plain.However,the strength of climatic control on lake changes was low in the Eastern Plain and the Mongolia-Xinjiang Plateau,where human activities,e.g.impoldering,irrigation and mining,have caused serious impacts on lakes.Further lake changes will exacerbate regional imbalances between lake resources and population distribution,and thus may increase the risk of water-resource crises in China.Shengli Tao Jingyun Fang Suhui Ma Qiong Cai Xinyu Xiong Di Tian Xia Zhao Leqi Fang Heng Zhang Jiangling Zhu Shuqing Zhao 2020National Science Review2020,7,1:14
16Blockade of sonic hedgehog signal pathway enhances antiproliferative effect of EGFR inhibitor in pancreatic cancer cells显示文摘目的:在胰腺的癌症房间表明分子调查声音的刺猬(嘘)和表皮的生长因素受体( EGFR )的表达式,并且由 cyclopamine andIressa 通过 SHH 和 EGFR 发信号小径的封锁估计禁止的效果, respectively.Methods :在胰腺的癌症房间线( PANC-1 , SUIT-2 ,和 ASPC-1 )的嘘和 EGFR 的表达式被 RT-PCR 和西方的污点分析检测。在有 cyclopamine 的不同集中的治疗以后,独自或在有 Iressa 的联合,胰腺的癌症房间上的 antiproliferativeeffect 被甲基 thiazolyl tetrazolium assays.A flowcytometry 分析分析被用来检测细胞的周期分发和胰腺的癌症 cells.Results 的 apoptosis : 3 胰腺的癌症,房间衬里的所有表示了嘘, Smoothened ( SMO ), andEGFR.Cyclopamine 能击倒在所有细胞 lines.Cyclopamine 或 Iressacould 调整 EGFR 的表示导致生长以一种剂量依赖者方式的禁止的效果。而且, 2.5mu mol/L cyclopamine 的联合使用和 1 亩 mol/L Iressa 独自比任何代理人导致了提高的禁止的效果和 greaterapoptosis 率。 G0/G1 和 sub-G1phases 的细胞人口的百分比显著地与 cyclopamine and/orIressa.Conclusion 的增加的剂量一起被增加:声音的刺猬信号小径的封锁提高 EGFR 禁止者的 antiproliferativeeffect 通过下面它在嘘并且 EGFR 发信号的同时的封锁代表的胰腺的 cancercells.The 的表示的规定为胰腺的癌的新治疗策略的可能的目标。Wei-guo HU Tao LIU Jiong-xin XIONG Chun-you WANG 2007Acta Pharmacologica Sinica2007,28,8:13
17Distribution and source of microplastics in China's second largest reservoir-Danjiangkou Reservoir显示文摘Fresh water microplastic pollution is of pressing concern globally,but its distribution and sources in reservoirs are poorly documented.Danjiangkou Reservoir is the second largest reservoir in China and is divided into the Han Reservoir and Dan Reservoir.In this work,microplastic abundances and morphological characteristics of the reservoir were investigated.The microplastic abundance of 15 main tributaries of the reservoir was also measured.The vertical distribution(in water column and sediment),horizontal distribution(in Han Reservoir and Dan Reservoir)and source of microplastics were analyzed.Microplastics accumulated in the middle layer of the reservoir,and the size and color of the microplastic particles changed from the surface to the bottom,which implies that surveys of surface water are not enough to determine the microplastic contamination for deep water reservoirs.In the surface water,the microplastic abundance in the Han Reservoir was lower than that in the Dan Reservoir(p<0.05),but microplastic abundance did not differ significantly in the intermediate and bottom water.Tributaries were one of the main sources of microplastics for Han Reservoir but not for Dan Reservoir.Agricultural cultivation in the hydro-fluctuation belt might be an important source of microplastics in the Dan Reservoir,which should be given additional attention.The results of this study can provide valuable information for developing microplastic sampling strategies in deep water reservoirs.Further studies are recommended to investigate the process through which microplastics in the hydro-fluctuation belt enter the reservoir and the sinking behavior of microplastics in the reservoir.Li Lin Xiong Pan Sheng Zhang Danwen Li Wenliang Zhai Zhen Wang Jingxiang Tao Changqing Mi Qingyun Li John C.Crittenden 2021Journal of Environmental Sciences2021,33,4:13
18Persistence of side population cells with high drug efflux capacity in pancreatic cancer显示文摘AIM: To investigate the persistence of side population (SP) cells in pancreatic cancer and their role and mechanism in the drug resistance. METHODS: The presentation of side population cells in pancreatic cancer cell line PANC-1 and its proportion change when cultured with Gemcitabine, was detected by Hoechst 33342 staining and FACS analysis. The expression of ABCB1 and ABCG2 was detected by real- time PCR in either SP cells or non-SP cells. RESULTS: SP cells do exist in PANC-1, with a median of 3.3% and a range of 2.1-8.7%. After cultured with Gemcitabine for 3 d, the proportion of SP cells increased significantly (3.8% ± 1.9%, 10.7% ± 3.7%, t = 4.616, P = 0.001 < 0.05). ABCB1 and ABCG2 expressed at higher concentrations in SP as compared with non-SP cells (ABCB1: 1.15 ± 0.72, 5.82 ± 1.16, t = 10.839, P = 0.000 < 0.05; ABCG2: 1.16 ± 0.75, 5.48 ± 0.94, t = 11.305, P = 0.000 < 0.05), which may contribute to the efflux of fluorescent staining and drug resistance. CONCLUSION: SP cells with inherently high resistance to chemotherapeutic agents do exist in pancreatic cancers, which may be candidate cancer stem cells contributing to the relapse of the tumor.Jing Zhou Chun-You Wang Tao Liu Bin Wu Feng Zhou Jiong-Xin Xiong He-Shui Wu Jing Tao Gang Zhao Ming Yang Shan-Miao Gou 2008World Journal of Gastroenterology2008,14,6:13
19Changes of Oxidative Stress and Soluble Sugar in Anthers Involve in Rice Pollen Abortion Under Drought Stress显示文摘Two rice maintaining lines with different drought tolerances, viz., Jin 23B (tolerant) and Zhenshan 97B (sensitive), were used to study the oxidative stress and soluble sugar in rice anthers and pollen viability under drought stress during flowering stage. Higher antioxidant enzyme activities and lower malonaldehyde (MDA) content in rice anthers were observed in Jin 23B than in Zhenshan 97B under drought stress. Further, a great increase in the content of soluble sugar in rice anthers of Jin 23B was observed across the whole drought exposure, while Zhenshan 97B showed significant decrease in soluble sugar during 9-12 d after drought stress (DADS). Accordingly, a marked decline of pollen fertility and activity, pollen numbers in an anther and pollen numbers on a stigma was observed in Zhenshan 97B, whereas little difference was found in Jin 23B. Thus, we suggest that pollen abortion caused by drought stress may be related with the reciprocity between oxidative stress and soluble sugar content in rice anthers.FU Guan-fu SONG Jian XIONG Jie LI Yu-rong CHEN Hui-zhe LE Ming-kai TAO Long-xing 2011Agricultural Sciences in China2011,10,7:12
20Effects of surface chemical properties of activated coke on selective catalytic reduction of NO with NH_3 over commercial coal-based activated coke显示文摘Surface chemical properties of typical commercial coal-based activated cokes were characterized by Xray photoelectron spectroscopy(XPS) and acid-base titration, and then the influence of surface chemical properties on catalytic performance of activated cokes of NO reduction with NH3 was investigated in a fixed-bed quartz micro reactor at 150 ℃. The results indicate that the selective catalytic reduction(SCR) activity of activated cokes with the increase of its surface acidic sites and oxygen content,obviously, a correlation between catalytic activity and surface acidic sites content by titration has higher linearity than catalytic activity and surface oxygen content by XPS. While basic sites content by acid-base titration have not correlation with SCR activity. It has been proposed that surface basic sites content measured by titration may not be on adjacent of acidic surface oxides and then cannot form of NO2-like species, thus the reaction of reduction of NO with NH3 have been retarded.Xie Wei Sun Zhongchao Xiong Yinwu Li Lanting Wu Tao Liang Daming 2014International Journal of Mining Science and Technology2014,24,4:12
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