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1SDF-1/CXCR4 axis modulates bone marrow mesenchymal stem cell apoptosis, migration and cytokine secretion显示文摘Bone marrow mesenchymal stem cells(MSCs)are considered as a promising cell source to treat the acute myocardial infarction.However,over 90%of the stem cells usually die in the first three days of transplantation.Survival potential,migration ability and paracrine capacity have been considered as the most important three factors for cell transplantation in the ischemic cardiac treatment.We hypothesized that stromal-derived factor-1(SDF-1)/CXCR4 axis plays a critical role in the regulation of these processes.In this study,apoptosis was induced by exposure of MSCs to H2O2 for 2 h.After re-oxygenation,the SDF-1 pretreated MSCs demonstrated a significant increase in survival and proliferation.SDF-1 pretreatment also enhanced the migration and increased the secretion of pro-survival and angiogenic cytokines including basic fibroblast growth factor and vascular endothelial growth factor.Western blot and RT-PCR demonstrated that SDF-1 pretreatment significantly activated the pro-survival Akt and Erk signaling pathways and up-regulated Bcl-2/Bax ratio.These protective effects were partially inhibited by AMD3100,an antagonist of CXCR4.We conclude that the SDF-1/CXCR4 axis is critical for MSC survival,migration and cytokine secretion.Xiaolei Liu Biyan Duan Zhaokang Cheng Xiaohua Jia Lina Mao Hao Fu Yongzhe Che Lailiang Ou Lin Liu Deling Kong 2011Protein & Cell2011,2,10:53
2Evaluation of the Xpert MTB/RIF assay for diagnosis of tuberculosis and rifampin resistance in county-level laboratories in Hunan province, China显示文摘Hu Peilei Bai Liqiong Liu Fengping Ou Xichao Zhang Zhiying Yi Songlin Chen Zhongnan Gong Daofang Liu Binbin Guo Jingwei Tan Yunhong 2014Chinese Medical Journal2014,,21:24
3Regulatory T cells as a new therapeutic target for atherosclerosis显示文摘动脉粥样硬化是贡献 T 和 B 房间免疫者回答的过多的激活的 self-self-antigens 和 non-self-antigens 引起的自体免疫的疾病。这些回答进一步加重脉管的 infiammation 并且经由释放 pro-infiammatory cytokines 支持到匾的动脉粥样硬化和危险的前进。特别地,规章的 T 房间( Tregs )由压制象 T 和 B 房间,生来的杀手( NK )房间,单核白血球,和树枝状的房间( DC )那样的各种各样的房间的有免疫力的回答作为主要 immunoregulatory 房间导致并且维持有免疫力的动态平衡和忍耐,象由 secreting 一样处于生理、病理学的状态的禁止的 cytokines interleukin ( IL )-10, IL-35 和抄写生长因素(TGF-)。众多的证据证明 Treg 的减少的数字和机能障碍可以是在动脉粥样硬化致病的 involveved。增加或恢复并且改进 Tregs 的抑制免疫力的能力数字可以用作基本免疫疗法对待动脉粥样硬化患者心血管的疾病。在这篇文章,我们 briefiy 介绍 Treg 子集的当前的知识,总结在 Tregs 和动脉粥样硬化开发之间的关系,并且讨论调整为动脉粥样硬化致病和匾稳定性的改进的预防的 Tregs 的可能性。尽管对动脉粥样硬化的调停 Treg 的保护的准确分子的机制尚待被阐明,为指向 Tregs 的规定的策略可以为动脉粥样硬化患者的预防和治疗提供特定、重要的途径心血管的疾病。Han-xiao OU Bing-bing GUO Qi LIU Yu-kun LI Zhen YANG Wen-jie FENG Zhong-cheng MO 2018Acta Pharmacologica Sinica2018,39,8:24
4Association between Vitamin D Insufficiency and the Risk for Gestational Diabetes Mellitus in Pregnant Chinese Women显示文摘Objective To investigate the association between vitamin D deficiency and risk of gestational diabetes mellitus(GDM) in pregnant Chinese women.Methods A nested case-control study was conducted.Clinical and biochemical data were analyzed for 200 subjects with GDM and 200 subjects with normal glucose tolerance(NGT).Results The median(interquartile range) serum 25-hydroxyvitamin D(25OHD) levels were 22.39(17.67,29.38) and 25.86(19.09,34.88) nmol/L in the GDM and NGT groups,respectively.Rates of 25OHD deficiency or insufficiency were significantly higher in the GDM group than in the NGT group.Subjects with 25OHD levels <25 nmol/L had a 1.8-fold higher risk of GDM compared with subjects with higher vitamin D levels.In the GDM group,serum 25OHD was independently associated with HbA1c and insulin resistance after adjusting for confounding factors.In the NGT group,serum 25OHD was independently associated with fasting plasma glucose and systolic blood pressure after adjusting for maternal age and other confounding factors.Conclusion 25OHD insufficiency is very common in Chinese women.Low 25OHD status may be associated with insulin resistance and act as a risk factor for GDM.WANG Ou NIE Min HU Ying Ying ZHANG Kui LI Wei PING Fan LIU Jun Tao CHEN Li Meng XING Xiao Ping 2012Biomedical and Environmental Sciences2012,25,4:21
5Origin of gray-green sandstone in ore bed of sandstone type uranium deposit in north Ordos Basin显示文摘Dongsheng sandstone-type uranium deposit is located in the northern part of Ordos Basin, occurring in the transitional zones between gray-green and gray sandstones of Jurassic Zhiluo Formation. Sandstones in oxidized zone of the ore bed look gray-green, being of unique signature and different from one of ordinary inter-layered oxidation zone of sandstone-type uranium deposits. The character and origin of gray-green sandstones are systematically studied through their petrology, mineralogy and geochemistry. It is pointed out that this color of sandstones is originated from secondary oil-gas reduction processes after paleo-oxidation, being due to acicular-leaf chlorite covering surfaces of the sandstone grains. To find out the origin of gray-green sandstone and recognize paleo-oxidation zones in the ore bed are of not only theoretical significance for understanding metallogenesis of this kind of sandstone-type uranium deposit, but also very importantly practical significance for prospecting for similar kind of sandstone-type uranium deposit.LI ZiYing FANG XiHeng CHEN AnPing OU GuangXi XIAO XinJian SUN Ye LIU ChiYang WANG Yi 2007Science China Earth Sciences2007,50,z2:20
6Apoptosis of rat hepatic stellate cells induced by anti-focal adhesion kinase antibody显示文摘AIM: To explore the role of focal adhesion kinase (FAI)in the apoptosis in culture-activated rat hepatic stellatecells (HSCs) using a specific anti-FAK antibody.METHODS: Rat HSCs were prepared from Wistar rats byin situ perfusion of collagenase and pronase and single-step density Nycodenze gradient. Culture-activatedHSCs were serum-starved and treated with the anti-FAK antibodies for 24, 48 or 72 h. The apoptosis of HSCwas detected by DNA-fragment assay, flow cytometryand caspase-3 activity determination. The expressionof tissue inhibitor of metalloproteinase-1 (TIMP-1)mRNA was assessed by reverse transcriptionpolymerase chain reaction (RT-PCR).RESULTS: The experiment showed that anti-FAKantibodies induced apoptosis of culture-activated ratHSCs. This phenomenon displayed the classical featuresof apoptotic cell death (DNA fragmentation, cell cycleanalysis) after treated with 30 mg@L-1 FAK antibody for72 h, and accompanied by a significant increase ofcespase-3 activity(1208±76) vs (309±28) nmol@min-1@ g-1, t=-208.5, P<0.05. Meanwhile, treatment with theFAK antibody in HSCs could markedly decrease theTIMP-1 mRNA expression (0.07±0.01 vs 0.38±0.03, t=2.72, P<0.05).CONCLUSION: FAK plays an important role in the survivalof HSCs and the specific anti-FAK antibody could inducethe apoptosis in rat HSCs.Xiao-Jing Liu Ou Qiang Ming-Hui Huang Laboratory of Department of Internal Medicine,West China Hospital,Sichuan University,Chengdu 610041,Sichuan Province,China Li Yang Yi-Ping Wang Department of Gastroenterology of West China Hospital,Sichuan University,Chengdu 610041,Sichuan Province,China Hong-Bin Wu Laboratory of Department of Surgery,West China Hospital,Sichuan University,Chengdu 610041,Sichuan Province,China 2002World Journal of Gastroenterology2002,8,4:17
7Impact of Heat Wave in 2005 on Mortality in Guangzhou, China显示文摘Objective To assess the impact of the heat wave in 2005 on mortality among the residents in Guangzhou and to identify susceptible subpopulations in Guangzhou, China. Methods The data of daily number of deaths and meteorological measures from 2003 to 2006 in Guangzhou were used in this study. Heat wave was defined as ≥7 consecutive days with daily maximum temperature above 35.0 ℃ and daily mean temperature above the 97th percentile during the study period. The excess deaths and rate ratio (RR) of mortality in the case period compared with the reference period in the same summer were calculated. Results During the study period, only one heat wave in 2005 was identified and the total number of excess deaths was 145 with an average of 12 deaths per day. The effect of the heat wave on non-accidental mortality (RR=1.23, 95% CI: 1.11-1.37) was found with statistically significant difference. Also, greater effects were observed for cardiovascular mortality (RR=1.34, 95% CI: 1.13-1.59) and respiratory mortality (RR=1.31, 95% CI: 1.02-1.69). Females, the elderly and people with lower socioeconomic status were at significantly higher risk of heat wave-associatedmortality. Conclusion The 2005 heat wave had a substantial impact on mortality among the residents in Guangzhou, particularly among some susceptible subpopulations. The findings from the present study may provide scientific evidences to develop relevant public health policies and prevention measures aimed at reduction of preventable mortality from heat waves.YANG Jun LIU Hua Zhang OU Chun Quan LIN Guo Zhen DING Yan ZHOU Qin SHEN Ji Chuan CHEN Ping Yan 2013Biomedical and Environmental Sciences2013,26,8:16
8A case-control study of risk factors for severe hand-foot-mouth disease in Yuxi, China, 2010–2012显示文摘Dear Editor,Here,we report the risk factors for severe hand-foot-mouth disease(HFMD)determined by our case-controlstudy.Our findings could help disease prevention and in-tervention initiatives.Patients with severe HFMD displayfatal clinical manifestations with sequelae,requiring≥7days of hospitalization.A tota1 of 249 severe cases treat-ed at Yuxi Children’s Hospital were included in theZe Liu Shukun Wang Rusong Yang Xia Ou 2014Virologica Sinica2014,29,2:14
9Levels and dynamic changes of serum fibroblast growth factor 23 in hypophosphatemic rickets/osteomalacia显示文摘背景 Hypophosphatemic 佝偻病 / 软骨病是骨头的有缺点的矿化作用由于 hypophosphatemia 和低 1,25-dihydroxy 维生素 D 描述的一组疾病。在磷酸盐动态平衡的规定探索成纤维细胞生长因素 23 的角色(FGF-23 ) ,我们与 hypophosphatemic 在健康个人并且在病人测量了这个生长因素的传播集中佝偻病 / 软骨病。有 hypophosphatemic 佝偻病 / 软骨病的十九个病人在 hypophosphatemic 被包括的方法组织(HP, 12 女性和 7 男、吝啬的年龄是 30 年) ,并且 19 个健康匹配年龄的个人担任了控制组。完整的长度 FGF-23 碎片被二地点的连接酶的 immunosorbent assay.Results 平均数 FGF-23 集中测量在 HP 组是显著地更高的((87.4 芤吗??XIA Wei-bo JIANG Yan LI Mei XING Xiao-ping WANG Ou HU Ying-ying ZHANG Hua-bing LIU Huai-cheng MENG Xun-wu ZHOU Xue-ying 2010Chinese Medical Journal2010,,9:14
10PepperHub, an Informatics Hub for the Chili Pepper Research Community显示文摘Feng Liu Huiyang Vu Yingtian Deng Jingyuan Zheng Minglei Liu Lijun Ou Bozhi Yang Xiongze Dai Yanqing Ma Shengyu Feng Shuang He Xuefeng Li Zhuqing Zhang Wenchao Chen Shudong Zhou Rong Chen Minmin Liu Sha Yang Ruimin Wei Huadong Li Feng Li Bo Ouyang Xuexiao Zou 2017Molecular Plant2017,10,8:13
11Mechanization technology:The key to sugarcane production in China显示文摘Sugarcane is an important cash crop in southern China now planted on about 1.5 million ha in the main production areas in Guangxi,Zhuang Autonomous Region and Yunnan,Guangdong,and Hainan Provinces.Since the cost of labor in China is increasing rapidly and the price of local sugar is uncompetitive with the product from mechanized international producers,China needs to change its sugarcane production methods from manual work to mechanization in order to catch up with international trends in this global industry.Although a lot of effort in China have gone into sugarcane mechanization since the 1960s,the overall level of mechanization in sugarcane production is still only approximately 30%,which is about 20%lower than that achieved in the other main field crops.Almost all of the sugarcane grown in China is still harvested by hand.In order to summarize past experience and promote the mechanization of sugarcane production in China,this paper reviews the whole process of developing mechanization since 1960s and describes the current state of sugarcane mechanization in China.The research currently being undertaken and the main obstacles to be overcome in developing a mechanized sugarcane production system,are described.The design and testing of sugarcane harvesting machinery and its key components has been a significant research area by some Chinese universities,research institutes,and manufacturing companies in these past decades.This paper reviews that research and outlines the main achievements which have been made in this area.Mechanized harvesting systems for sugarcane,and the appropriate harvesting patterns suitable for different growing conditions applying in China,have also been studied.The paper concludes with some comments on the future directions for progress in China’s mechanization of sugarcane production and some policy suggestions to facilitate the industry's transition.Ou Yinggang Malcolm Wegener Yang Dantong Liu Qingting Zheng Dingke Wang Meimei Liu Haochun 2013International Journal of Agricultural and Biological Engineering2013,6,1:13
12Tomato SlAN11 regulates flavonoid biosynthesis and seed dormancy by interaction with bHLH proteins but not with MYB proteins显示文摘The flavonoid compounds are important secondary metabolites with versatile human nutritive benefits and fulfill a multitude of functions during plant growth and development.The abundance of different flavonoid compounds are finely tuned with species-specific pattern by a ternary MBW complex,which consists of a MYB,a bHLH,and a WD40 protein,but the essential role of SlAN11,which is a WD40 protein,is not fully understood in tomato until now.In this study,a tomato WD40 protein named as SlAN11 was characterized as an effective transcription regulator to promote plant anthocyanin and seed proanthocyanidin(PA)contents,with late flavonoid biosynthetic genes activated in 35S::SlAN11 transgenic lines,while the dihydroflavonol flow to the accumulation of flavonols or their glycosylated derivatives was reduced by repressing the expression of SlFLS in this SlAN11-overexpressed lines.The above changes were reversed in 35S::SlAN11-RNAi transgenic lines except remained levels of flavonol compounds and SlFLS expression.Interestingly,our data revealed that SlAN11 gene could affect seed dormancy by regulating the expressions of abscisic acid(ABA)signaling-related genes SlABI3 and SlABI5,and the sensitivity to ABA treatment in seed germination is conversely changed by SlAN11-overexpressed or-downregulated lines.Yeast two-hybrid assays demonstrated that SlAN11 interacted with bHLH but not with MYB proteins in the ternary MBW complex,whereas bHLH interacted with MYB in tomato.Our results indicated that low level of anthocyanins in tomato fruits,with low expression of bHLH(SlTT8)and MYB(SlANT1 and SlAN2)genes,remain unchanged upon modification of SlAN11 gene alone in the transgenic lines.These results suggest that the tomato WD40 protein SlAN11,coordinating with bHLH and MYB proteins,plays a crucial role in the fine adjustment of the flavonoid biosynthesis and seed dormancy in tomato.Yongfeng Gao Jikai Liu Yongfu Chen Hai Tang Yang Wang Yongmei He Yongbin Ou Xiaochun Sun Songhu Wang Yinan Yao 2018Horticulture Research2018,5,1:13
13Syntheses and Fungicidal Activities of Thiazole-5-carboxanilides Bearing Thioether Group显示文摘XUE Hansong LIU Aiping LIU Weidong LI Jianming REN Yeguo HUANG Lu HE Lian OU Xiaoming YE Jiao HUANG Mingzhi 2016Chemical Research in Chinese Universities2016,32,5:13
14Effect of hydrophilic silica nanoparticles on hydrate formation: Insight from the experimental study显示文摘Invasion of drilling fluid into natural gas hydrate deposits during drilling might damage the reservoir,induce hydrate dissociation and then cause wellbore instability and distortion of the data from well logging. Adding nanoparticles into drilling fluid is an effective method in reducing the invasion of drilling fluid and enhancing borehole stability. However, the addition of nanoparticles might also introduce hydrate formation risk in borehole because they can act as the 'seeds' for hydrate nucleation. This paper presents an experimental study of the effect of hydrophilic silica nanoparticle on gas hydrate formation in a dynamic methane/liquid-water system. In the experiment, the ultrapure water with and without1.0 wt%–6.0 wt% concentrations of silica nanoparticles, grain sizes of 20 and 50 nm, were pressurized by methane gas under varied conditions of temperature and pressure. The induction time, the gas consumption, and the average rate of gas consumption in the system were measured and compared to those in ultrapure water. The results show that a concentration of 4.0 wt% hydrophilic SiO_2 particles with a grain size of 50 nm has a relatively strong inhibition effect on hydrate formation when the initial experimental condition is 5.0 °C and 5.0 MPa. Compared to ultrapure water, the hydrophilic nano-SiO_2 fluid increases the induction time for hydrate formation by 194% and decreases the amount and average rate of hydrate formation by 10% and 17%, respectively. This inhibition effect may be attributed to the hydrophilicity,amount and aggregation of silica nanoparticle according to the results of water activity and zeta potential measurements. Our work also elucidates hydrophilic, instead of hydrophobic, nanoparticles can be added to the drilling fluid to maintain wellbore stability and to protect the hydrate reservoir from drilling mud damage, because they exhibit certain degree of hydrate inhibition which can reduce the risk of hydrate reformation and aggregation during gas hydrate or deep water drilling if their concentration can be controlled properly.Ren Wang Tianle Liu Fulong Ning Wenjia Ou Ling Zhang Zhen Wang Li Peng Jiaxin Sun Zhichao Liu Tianshu Li Huicui Sun Guosheng Jiang 2019Journal of Energy Chemistry2019,28,3:12
15Curative effect of acupuncture on quality of life in patient with depression: a clinical randomized single-blind placebo-controlled study显示文摘OBJECTIVE:To evaluate the effect of acupuncture on the quality of life in patients with depression by clinical randomized single-blind placebo-controlled study.METHODS:one hundred and sixty-three cases of depression according with the inclusion criteria were randomly divided into a group of acupuncture dredging liver and regulating flow of theosophy(group 1),a group of acupoint shallow stab(group 2)and a group of non-acupoint shallow stab(group 3)at 1∶1∶1 ratio,and treated with acu-puncture,moxibustion,and intradermal embedding of needle,twice a week,for a total of 12 weeks.Scale of Quality of Life(SF-36)was used to measure the scores at four different time points and evaluate the effect of acupuncture on the quality of life of the patients with depression.RESULTS:At each time point after treatment,in scores of the 8 items,physical function,physical role,bodily pain,general physical condition,energy,social function,emotional function and mental health there were statistically significant differences among the 3 groups(P<0.0125).CONCLUSION:Acupuncture can effectively improve the quality of life of patients with depression.Fan Ling Fu Wenbin Chen Zhao Xu Nenggui Liu Jianhua LǚAiping Li Ziping Su Shengyong Wu Taixiang Ou Aihua 2016Journal of Traditional Chinese Medicine2016,36,2:12
16Insight-HXMT observations of the first binary neutron star merger GW170817显示文摘Finding the electromagnetic(EM) counterpart of binary compact star merger, especially the binary neutron star(BNS) merger,is critically important for gravitational wave(GW) astronomy, cosmology and fundamental physics. On Aug. 17, 2017,Advanced LIGO and Fermi/GBM independently triggered the first BNS merger, GW170817, and its high energy EM counterpart,GRB 170817 A, respectively, resulting in a global observation campaign covering gamma-ray, X-ray, UV, optical, IR, radio as well as neutrinos. The High Energy X-ray telescope(HE) onboard Insight-HXMT(Hard X-ray Modulation Telescope) is the unique high-energy gamma-ray telescope that monitored the entire GW localization area and especially the optical counterpart(SSS17 a/AT2017 gfo) with very large collection area(~1000 cm^2) and microsecond time resolution in 0.2-5 MeV. In addition,Insight-HXMT quickly implemented a Target of Opportunity(ToO) observation to scan the GW localization area for potential X-ray emission from the GW source. Although Insight-HXMT did not detect any significant high energy(0.2-5 MeV) radiation from GW170817, its observation helped to confirm the unexpected weak and soft nature of GRB 170817 A. Meanwhile,Insight-HXMT/HE provides one of the most stringent constraints(~10^(-7) to 10^(-6) erg/cm^2/s) for both GRB170817 A and any other possible precursor or extended emissions in 0.2-5 MeV, which help us to better understand the properties of EM radiation from this BNS merger. Therefore the observation of Insight-HXMT constitutes an important chapter in the full context of multi-wavelength and multi-messenger observation of this historical GW event.TiPei Li ShaoLin Xiong ShuangNan Zhang FangJun Lu LiMing Song XueLei Cao Zhi Chang Gang Chen Li Chen TianXiang Chen Yong Chen YiBao Chen YuPeng Chen Wei Cui WeiWei Cui JingKang Deng YongWei Dong YuanYuan Du MinXue Fu GuanHua Gao He Gao Min Gao MingYu Ge YuDong Gu Ju Guan ChengCheng Guo DaWei Han Wei Hu Yue Huang Jia Huo ShuMei Jia LuHua Jiang WeiChun Jiang Jing Jin YongJie Jin Bing Li ChengKui Li Gang Li MaoShun Li Wei Li Xian Li XiaoBo Li XuFang Li YanGuo Li ZiJian Li ZhengWei Li XiaoHua Liang JinYuan Liao CongZhan Liu GuoQing Liu HongWei Liu ShaoZhen Liu XiaoJing Liu Yuan Liu YiNong Liu Bo Lu XueFeng Lu Tao Luo Xiang Ma Bin Meng Yi Nang JianYin Nie Ge OU JinLu Qu Na Sai Liang Sun Yin Tan Lian Tao WenHui Tao YouLi Tuo GuoFeng Wang HuanYu Wang Juan Wang WenShuai Wang YuSa Wang XiangYang Wen BoBing WU Mei Wu GuangCheng Xiao He Xu YuPeng Xu LinLi Yan JiaWei Yang Sheng Yang YanJi Yang AiMei Zhang ChunLei Zhang ChengMo Zhang Fan Zhang HongMei Zhang Juan Zhang Qiang Zhang Shu Zhang Tong Zhang Wei Zhang WanChang Zhang WenZhao Zhang Yi Zhang Yue Zhang YiFei Zhang YongJie Zhang Zhao Zhang ZiLiang Zhang HaiSheng Zhao JianLing Zhao XiaoFan Zhao ShiJie Zheng Yue Zhu YuXuan Zhu ChangLin Zou 2018Science China(Physics,Mechanics & Astronomy)2018,61,3:12
17Laparoscopy-assisted total gastrectomy with trans-orally inserted anvil(OrVil^(TM)):A single institution experience显示文摘AIM:To investigate the feasibility of laparoscopyassisted total gastrectomy(LATG)using trans-orally inserted anvil(OrVilTM)in terms of operative characteristics and short term outcomes. RESULTS:Characteristics of 27 patients with gastric cancer who underwent LATG from October 2009 to October 2012 in the Foshan Affiliated Hospital of South Medical University were retrospectively reviewed. Among these patients,six were reconstructed by minilaparotomy and 21 by OrVilTM.The clinicopathological characteristics,total operation time,total blood loss, abdominal incision and complications of anastomosis including stenosis and leakage,were compared between the groups undergoing LATG with OrVilTM and the group undergoing minilaparotomy. RESULTS:The operations were successfully performed on all the patients without intraoperative complications or conversion to open surgery.Two(10%)patients received palliative procedure under laparoscope who were prepared for LATG preoperatively.One case had hepatic metastatic carcinoma and 1 case had tumor recurrence near the anastomosis 8 mo after surgery.The mean follow-up duration was 10 mo(range,2-24 mo). Operation time was significantly reduced by the use of OrVilTM(198.42±30.28 min vs 240.83±8.23 min). The postoperative course with regard to occurrence of stenosis and leakage was not different between the two groups.There were no significant differences in estimated blood loss.The upper abdominal incision was smaller in OrVilTM group than in minilaparotomy group (4.31±0.45 cm vs 6.43±0.38 cm). CONCLUSION:LATG using OrVil TM is a technically feasible surgical procedure with sufficient lymph node dissection,less operation time and acceptable morbidity.Guan-Qun Liao Xiao-Wei Ou Shi-Qiang Liu Shao-Rui Zhang Wen Huang 2013World Journal of Gastroenterology2013,19,5:11
18Biogenic silica in intertidal marsh plants and associated sediments of the Yangtze Estuary显示文摘Biogenic silica (BSi) contents in the marsh plants (Phragmites australis, Scirpus mariqueter and Spartina alterniflora) and associated sediments in Chongming Island eastern intertidal flat of the Yangtze Estuary were determined. The BSi contents in P. australis, S. mariqueter and S. alterniflora varied from 25.78-42.74 mg/g, 5.71-19.53 mg/g and 6.71-8.92 mg/g, respectively. Over the entire growth season, P. australis and S. mariqueter were characterized by linear accumulation patterns of BSi. The aboveground biomass (leaves and culms) of the marsh plants generally contained more BSi than underground biomass (roots). BSi contents were relatively higher in dead plant tissues than in live tissues which was probably due to the decomposition and the leaching of labile components of plant tissues such as organic carbon and nitrogen. Comparing with the habitats of S. mariqueter and S. alterniflora, the highest BSi content was recorded in sediments inhabited by P. australis, with an annual average of 15.69 mg/g. Overall, the intertidal marshes in the Yangtze Estuary may act as a net sink of BSi via plant uptake and sedimentary burial.Lijun Hou Min Liu Yi Yang Dongni Ou Xiao Lin Hui Chen 2010Journal of Environmental Sciences2010,22,3:10
19Reuse of Fenton sludge as an iron source for NiFe_2O_4 synthesis and its application in the Fenton-based process显示文摘The potentially hazardous iron-containing sludge from the Fenton process requires proper treatment and disposal, which often results in high treatment cost. In this study, a novel method for the reuse of Fenton sludge as an iron source for the synthesis of nickel ferrite particles(NiFe_2O_4) is proposed. Through a co-precipitation method followed by sintering at 800°C, magnetic NiFe_2O_4 particles were successfully synthesized, which was confirmed by powder X-ray diffraction(XRD), scanning electronic microscopy(SEM), energy dispersive spectroscopy(EDS), Fourier transform infrared spectroscopy(FT-IR) and Raman spectroscopy. The synthesized NiFe_2O_4 could be used as an efficient catalyst in the heterogeneous Fenton process. In phenol degradation with H_2O_2 or NiFe_2O_4 alone, the phenol removal efficiencies within the reaction time of 330 min were as low as 5.9% ± 0.1% and 13.5% ±0.4%, respectively. However, in the presence of both NiFe_2O_4 and H_2O_2, phenol removal efficiency as high as 95% ± 3.4% could be achieved, indicating the excellent catalytic performance of NiFe_2O_4 in the heterogeneous Fenton process. Notably, a rapid electron exchange between_Ni II and_Fe III ions in the NiFe_2O_4 structure could be beneficial for the Fenton reaction. In addition, the magnetic catalyst was relatively stable, highly active and recoverable, and has potential applications in the Fenton process for organic pollutant removal.Hui Zhang Jianguo Liu Changjin Ou Faheem Jinyou Shen Hongxia Yu Zhenhuan Jiao Weiqing Han Xiuyun Sun Jiansheng Li Lianjun Wang 2017Journal of Environmental Sciences2017,29,3:10
20Two clinically relevant pressures of carbon dioxide pneumoperitoneum cause hepatic injury in a rabbit model显示文摘AIM:To observe the hepatic injury induced by carbon dioxide pneumoperitoneum(CDP) in rabbits,compare the eects olow-and high-pressure pneumoperitoneum,and to determine the degree o hepatic injury induced by these two clinically relevant CDP pressures.METHODS:Thirty healthy male New Zealand rabbits weighing 3.0 to 3.5 kg were randomly divided into three groups(n = 10 for each group) and subjected to the ollowing to CDP pressures:no gas control,10 mmHg,or 15 mmHg.Histological changes in liver tissues were observed with hematoxylin and eosin staining and transmission electron microscopy.Liver unction was evaluated using an automatic biochemical analyzer.Adenine nucleotide translocator(ANT) activity in liver tissue was detected with the atractyloside-inhibitor stop technique.Bax and Bcl-2 expression levels were detected bywestern blotting.RESULTS:Liver Functions in the 10 mmHg and 15 mmHg experimental groups were significantly disturbed compared with the control group.After CDP,the levels or alanine transaminase and aspartate transaminase were 77.3 ± 14.5 IU/L and 60.1 ± 11.4 IU/L,respectively,in the 10 mmHg experimental group and 165.1 ± 19.4 IU/L and 103.8 ± 12.3 IU/L,respectively,in the 15 mmHg experimental group,which were all higher than those of the control group(p < 0.05).There was no difference in pre-albumin concentration between the 10 mmHg experimental group and the control group,but the prealbumin level of the 15 mmHg experimental group was significantly lower than that of the control group(p < 0.05).No significant differences were observed in the levels of total bilirubin or albumin among the three groups.After 30 and 60 min of CDP,pH was reduced(p < 0.05) and fa CO2 was elevated(p < 0.05) in the 10 mmHg group compared with controls,and these changes were more pronounced in the 15 mmHg group.Hematoxylin and eosin staining showed no significant change in liver morphology,except for mild hyperemia in the two experimental groups.Transmission electron microscopy showed mild mitochondrial swelling in hepatocytes of the 10 mmHg group,and this was more pronounced in the 15 mmHg group.No significant difference in ANT levels was found between the control and 10 mmHg groups.However,ANT concentration was significantly lower in the 15 mmHg group compared with the control group.The expression of hepatic Bax was significantly increased in the two experimental groups compared with the controls,but there were no differences in Bcl-2 levels among the three groups.Twelve hours after CDP induction,the expression of hepatic Bax was more significant in the 15 mmHg group than in the 10 mmHg group.CONCLUSION:A CDP pressure of 15 mmHg caused more substantial hepatic injury,such as increased levels of acidosis,mitochondrial damage,and apoptosis;therefore,10 mmHg CDP is preferable for laparoscopic operations.Jun Li Ying-Hai Liu Zhan-Yong Ye He-Nian Liu Shan Ou Fu-Zhou Tian 2011World Journal of Gastroenterology2011,17,31:10
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