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177篇 您的检索式:作者名="Dan Deng"
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1High expression of ACE2 receptor of 2019-nCoV on the epithelial cells of oral mucosa显示文摘It has been reported that ACE2 is the main host cell receptor of 2019-nCoV and plays a crucial role in the entry of virus into the cell to cause the final infection. To investigate the potential route of 2019-n Cov infection on the mucosa of oral cavity, bulk RNA-seq profiles from two public databases including The Cancer Genome Atlas(TCGA) and Functional Annotation of The Mammalian Genome Cap Analysis of Gene Expression(FANTOM5 CAGE) dataset were collected. RNA-seq profiling data of 13 organ types with para-carcinoma normal tissues from TCGA and 14 organ types with normal tissues from FANTOM5 CAGE were analyzed in order to explore and validate the expression of ACE2 on the mucosa of oral cavity. Further, single-cell transcriptomes from an independent data generated in-house were used to identify and confirm the ACE2-expressing cell composition and proportion in oral cavity. The results demonstrated that the ACE2 expressed on the mucosa of oral cavity. Interestingly, this receptor was highly enriched in epithelial cells of tongue. Preliminarily, those findings have explained the basic mechanism that the oral cavity is a potentially high risk for 2019-nCoV infectious susceptibility and provided a piece of evidence for the future prevention strategy in dental clinical practice as well as daily life.Hao Xu Liang Zhong Jiaxin Deng Jiakuan Peng Hongxia Dan Xin Zeng Taiwen Li Qianming Chen 2020International Journal of Oral Science2020,12,1:69
2Decreased expression of human aquaporin-5 correlated with mucus overproduction in airways of chronic obstructive pulmonary disease显示文摘目的:调查在 aquaporin-5 ( AQP5 )之间的关系在有长期的妨碍的肺的疾病( COPD )和与肺的功能 change.Methods 的关联的中国病人的航线的表示和粘液生产过剩:支气管的纸巾从纤维被获得到 July2004.Twenty 的从4月的韦斯特中国医院里的眼的 bronchoscopy 和支气管的活体检视--五病人们作为 COPD 病人,和另外一个被诊断 20 作为控制病人被诊断。 AQP5 ,粘蛋白 5AC ( MUC5AC ),和在支气管的纸巾的粘蛋白的表情被半检测量的 RT-PCR 在 situ 杂交,和组织化学的免疫和染色的alcianblue周期的 acid-Schiff (AB舞步), respectively.Results :与控制组相比, AQP5 的稀释表情从病人 withCOPD 在整个支气管的纸巾被检测( P < 0.01 ),但是没有差别在肺纸巾存在( P > 0.05 )。同时,增加了 MUC5AC 染色,在 submucosal 腺的粘液被注意(P < 0.01,分别地) 。吸烟稀释了 AQP5 的表情并且增加了在 COPDgroups 在 submucosal 腺染色 MUC5AC 和粘液( P < 0.01 ),当有时,没有重要差别在控制组观察了( P > 0.05 ) AQP5 mRNA 的 .Thedecreased 表示在 1 s ( FEV1 )与强迫的吐气的体积被相关 /forcedvital 能力( FVC )( r=0.60 , P < 0.01 ),FEV1%预言了值( r=0.60 , P < 0.01 ),重要能力( V50 )%预言了的最大的吐气的流动in50%值( r=0.55 , P < 0.01 ),并且在25%重要能力( V25 )的最大的吐气的流动%预言了值( r=0,45 , P < 0.01 )。减少的表达式否定地与上皮航线的 MUC5AC mRNA 被相关(r=-0.45, P < 0.01 ) 并且 submucosalglands 的 AB-PAS-stained 区域(r=-0.61, P < 0.01 ) 。起来 MUC5AC mRNA 的规定相关与断然 submucosal 腺的 AB-PAS-stainedarea 并且与 FEV1/FVC 否定地相关( r=-0.53 ; P < 0.01 ),FEV1%预言了值( r=-0.53 ; P < 0.01 ),V50%预言了值( r=-0.48 ; P < 0.01 ),并且V25%预言了值( r=-0.43 ; P < 0.01 ) .Conclusion : AQP5 的稀释基因表达式在中国 COPD 病人的航线存在,它由粘液分泌过盛是复杂的。AQP5mRNA 的减少的表达式可能与气流阻塞的严厉有关。Ke WANG Yu-lin FENG Fu-qiang WEN Xue-rong CHEN Xue-mei OU Dan XU Jie YANG Zhi-ping DENG 2007Acta Pharmacologica Sinica2007,28,8:24
3L_-glutamine provides acid resistance for Escherichia coil through enzymatic release of ammonia显示文摘Peilon Lu 2013Cell Research2013,23,5:23
4Ten cities cross-sectional questionnaire survey of children asthma and other allergies in China显示文摘Asthma,rhinitis and eczema(allergic or non-allergic)have increased throughout the world during the last decades,especially among children.Changes in the indoor environment are suspected to be important causes.China has experienced a dramatic change in indoor environmental exposures during the past two decades.However,such changes and their associations with children’s asthma and other health aspects have not been thoroughly studied.China,Children,Homes,Health(CCHH),Phase I,was a cross-sectional questionnaire survey of 48219 children 1–8 years old in 10 Chinese cities during 2010–2012.The questionnaire includes the International Study of Asthma and Allergies in Childhood(ISAAC)core health questions and additional questions regarding housing,life habits and outdoor environment.In health analyses,children aged 3–6 years old were included.The prevalences of doctor diagnosed asthma varied from 1.7%to 9.8%(mean 6.8%),a large increase from 0.91%in 1999 and 1.50%in2000.The prevalence of wheeze,rhinitis and atopic eczema(last 12 months)varied from 13.9%to 23.7%,24.0%to 50.8%and4.8%to 15.8%,respectively.Taiyuan had the lowest prevalences of all illnesses and Shanghai the highest,except for wheezewhere the highest value was for Urumqi.We found(1)no obvious association between disease prevalences and ambient PM10concentrations and(2)higher prevalences of disease in humid climates with hot summers and cold winters,but with no centrally heated buildings.Associations between the diseases and economic status as indexed by Gross Domestic Product(GDP)requires further study.ZHANG YinPing LI BaiZhan HUANG Chen YANG Xu QIAN Hua DENG QiHong ZHAO ZhuoHui LI AnGui ZHAO JiaNing ZHANG Xin QU Fang HU Yu YANG Qin WANG Juan ZHANG Ming WANG Fang ZHENG XiaoHong LU Chan LIU ZhiJian SUN YueXia MO JinHan ZHAO YiLi LIU Wei WANG TingTing NORBCK Dan BORNEHAG Carl-Gustaf SUNDELL Jan 2013Chinese Science Bulletin2013,58,34:22
5Application of P507 and isooctanol extraction system in recovery of scandium from simulated red mud leach solution显示文摘The current recovery technique of Sc was complicated and the chemical consumption was high,This was due to the low content of Sc in resources and the difficulty of stripping.In this research,the isooctanol was added into the 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester(P507)extraction system to reduce the extraction and improve the stripping of Sc.The maximum stripping ratio of Sc from loaded organic phase by sulfuric acid can increase from 10%(without isooctanol)to 99%(with 15 vol%isooctanol).In the extraction test of the simulated red mud leaching liquor,the separation factors between Sc and Zr,Sc and Ti are 36 and 350,separately.At the same time,other metals are almost not extracted.The high selectivity and stripping of Sc suggest that the P507 with isooctanol extraction system can be applied in the practical Sc recovery process.Chuanying Liu Li Chen Ji Chen Dan Zou Yuefeng Deng Deqian Li 2019Journal of Rare Earths2019,37,9:22
6Understanding the genetic and epigenetic architecture in complex network of rice flowering pathways显示文摘尽管 flowering 时间控制的分子的基础很好在长天(LD ) 内被把,种 Arabidopsis,它在短天(SD ) 内大部分仍然是未知的植物米饭。瑞斯 flowering 时间(标题日期) 是为季节改编和谷物产量的一个重要农学的特点,它被基因、环境的因素影响。在最后十年期间,作为被识别的、著名进步在探索上被取得了的成花素的性质,成花素基因表示怎么样,遗传上控制。然而,在象 FLOWERING 那样的某些关键 flowering 综合者的 Arabidopsis 表示,地点 C (FLC ) 和 FLOWERING 地点 T (英尺) 被各种各样的染色质修正 epigenetically 也调整几乎不在这个方面上在米饭被知道直到很最近。这评论在米饭 flowering 时间控制总结了基因网络和染色质修正的进展,试图给一个完全的看法基因并且在米饭 flowering 小径的复杂网络的 epigenetic 建筑学。Changhui Sun Dan Chen Jun Fang Pingrong Wang Xiaojian Deng Chengcai Chu 2014Protein & Cell2014,5,12:19
7Correlation Between the Clinical Severity, Bacterial Load, and Inflammatory Reaction in Children with Mycoplasma Pneumoniae Pneumonia显示文摘Given the lack of defining features in the clinical manifestations and radiographic findings for children with mycoplasma pneumoniae pneumonia(MPP),quantitative polymerase chain reaction(qPCR)has become a useful diagnostic method.This study was performed to explore the relationship between the qPCR findings,clinical symptoms,and inflammatory markers in children with MPP.Four hundred children with MPP have been enrolled in this retrospective analysis.All clinical and analytical information,including mycoplasma pneumoniae(MP)PCR results,has been collected.Based on the PCR results,the patients were divided into groups with load values(copy number)<105(54 cases),2105 and<106(71 cases),2106 and<107(112 cases),>107 and<108(114 cases),and>108(49 cases).The clinical features(including symptoms and signs)and inflammatory indicators were compared among the groups.The incidence of high fever(above 39℃),thermal peak during the entire hospitalization period,fever duration,days of hospitalization,and plasma lactate dehydrogenase(LDH)levels were statistically correlated with the MP PCR load value in children with MPP.The analysis of relevance degree showed the correlative order as a thermal peak of hospitalization>duration of fever>period of hospitalization>LDH value>C-reactive protein value.The host immune response was significantly greater in the complication group than in the non-complication group.Chen ZHANG Qiao ZHANG Jie-lin DU Dan DENG Ye-lei GAO Cheng-lin WANG Hong-jie ZHAO Qian GUO Zhou FU Dai-yin TIAN 2020Current Medical Science2020,40,5:19
8From concept to reality-A review to the primary test stand and its preliminary application in high energy density physics显示文摘Pulsed power technology,whereas the electrical energy stored in a relative long period is released in much shorter timescale,is an efficient method to create high energy density physics(HEDP)conditions in laboratory.Around the beginning of this century,China Academy of Engineering Physics(CAEP)began to build some experimental facilities for HEDP investigations,among which the Primary Test Stand(PTS),a multi-module pulsed power facility with a nominal current of 10 MA and a current rising time~90 ns,is an important achievement on the roadmap of the electro-magnetically driven inertial confinement fusion(ICF)researches.PTS is the first pulsed power facility beyond 10 TW in China.Therefore,all the technologies have to be demonstrated,and all the engineering issues have to be overcome.In this article,the research outline,key technologies and the preliminary HEDP experiments are reviewed.Prospects on HEDP research on PTS and pulsed power development for the next step are also discussed.Jianjun Deng Weiping Xie Shuping Feng Meng Wang Hongtao Li Shengyi Song Minghe Xia Ji Ce An He Qing Tian Yuanchao Gu Yongchao Guan Bin Wei Xianbin Huang Xiaodong Ren Jiakun Dan Jing Li Shaotong Zhou Hongchun Cai Siqun Zhang Kunlun Wang Qiang Xu Yujuan Wang Zhaohui Zhang Guilin Wang Shuai Guo Yi He Yiwei Zhou Zhanji Zhang Libing Yang Wenkang Zou 2016Matter and Radiation at Extremes2016,1,1:19
9Organic anion transporting polypeptide-1B1 haplotypes in Chinese patients显示文摘瞄准:在搬运 polypeptide-1B1 的器官的阴离子检测 388G >A 和 521T >C 变体等位基因(OATP1B1,编码基因 SLCO1B1 ) 基因。方法:111 个健康志愿者在我们的学习为 OATP1B1 等位基因被屏蔽。PCR 限制碎片长度多型性被用来鉴别 388G >A 多型性和一个 1 步 tetra 教材方法为 521T >C 变化的决心被开发。结果:在中国人口的 388G >A 和 521T >C 变体等位基因的频率分别地是 73.4% 和 14.0% 。SLCO1B1 *1b 和 *15 haplotypes 的频率分别地是 59.9% 和 14.0% 。结论:SLCO1B1 *1b 和 SLCO1B1 *15 变体在中国人口是相对普通的。他们的频率类似于那在从那在白种人和黑人日本,却显著地不同。Lin-yong XU Yi-jing HE Wei ZHANG Sheng Deng Qing LI Wei-xia ZHANG Zhao-qian LIU Dan WANG Yuan-fei HUANG Hong-hao ZHOU Zhen-qiu SUN 2007Acta Pharmacologica Sinica2007,28,10:18
10STAT-3 correlates with lymph node metastasis and cell survival in gastric cancer显示文摘AIM:To investigate the correlation between gastric cancer growth and signal transducer and activator of transcription-3(STAT3) expression.METHODS:We assessed the expressions of STAT3,phosphor-STAT3(pSTAT3),suppressor of cytokine signaling-1(SOCS-1),survivin and Bcl-2 in gastric cancer patients after gastrectomy by immunohistochemical method.In addition,in situ hybridization was used to further demonstrate the mRNA expression of STAT3 in gastric cancer.RESULTS:With the univariate analysis,expressions of STAT3,pSTAT3,SOCS-1,survivin and Bcl-2,the size of primary tumor and the lymph node metastasis were found to be associated with the overall survival(OS) of gastric cancer patients.However,only pSTAT3 expression and the lymph node metastasis were identified as the independent factors of OS of gastric cancer with multivariate analysis.STAT3 expression was correlated with the lymph node metastasis.There were positive correlations between expressions of STAT3,survivin,Bcl-2 and pSTAT3 in gastric cancer,whereas there was negative correlation between STAT3 expression and SOCS-1 expression in gastric cancer.CONCLUSION:STAT3 can transform into pSTAT3 to promote the survival and inhibit the apoptosis of gastric cancer cells.SOCS-1 might be the valid molecular antagonist to inhibit the STAT3 expression in gastric cancer.Jing-Yu Deng Xiang-Yu Liu Han Liang Dan Sun Yi Pan 2010World Journal of Gastroenterology2010,16,42:16
11Adsorption–desorption behavior of atrazine on agricultural soils in China显示文摘Adsorption and desorption are important processes that affect atrazine transport,transformation,and bioavailability in soils.In this study,the adsorption–desorption characteristics of atrazine in three soils(laterite,paddy soil and alluvial soil) were evaluated using the batch equilibrium method.The results showed that the kinetics of atrazine in soils was completed in two steps:a'fast' adsorption and a 'slow' adsorption and could be well described by pseudo-second-order model.In addition,the adsorption equilibrium isotherms were nonlinear and were well fitted by Freundlich and Langmuir models.It was found that the adsorption data on laterite,and paddy soil were better fitted by the Freundlich model;as for alluvial soil,the Langmuir model described it better.The maximum atrazine sorption capacities ranked as follows:paddy soil > alluvial soil > laterite.Results of thermodynamic calculations indicated that atrazine adsorption on three tested soils was spontaneous and endothermic.The desorption data showed that negative hysteresis occurred.Furthermore,lower solution pH value was conducive to the adsorption of atrazine in soils.The atrazine adsorption in these three tested soils was controlled by physical adsorption,including partition and surface adsorption.At lower equilibrium concentration,the atrazine adsorption process in soils was dominated by surface adsorption;while with the increase of equilibrium concentration,partition was predominant.Lin Yue ChengJun Ge Dan Feng Huamei Yu Hui Deng Bomin Fu 2017Journal of Environmental Sciences2017,29,7:16
12Analysis of risk factors for the interval time, number and pattern of hepatic metastases from gastric cancer after radical gastrectomy显示文摘AIM: To analyze the risk factors for interval time, number and pattern of hepatic metastases from gastric cancer after radical gastrectomy, and provide evidence for predicting and preventing hepatic metastasis from gastric cancer after radical gastrectomy. METHODS: A retrospective study of 87 patients with hepatic metastasis who underwent radical gastrectomy for gastric cancer from 1996 to 2001. The data was analyzed to evaluate significant risk factors for interval time, number and pattern of hepatic metastases originating from gastric cancer after radical gastrectomy. RESULTS: The size of gastric cancer and lymph node metastases were independently correlated with the interval time of hepatic metastases; the depth of invasion was independently correlated with the number of hepatic metastases; while the depth of invasion and Lauren classification were independently correlated with the pattern of hepatic metastases. CONCLUSION: We evaluated the interval time of hepatic metastases with the size of gastric cancer and lymph node metastases. The depth of invasion could be used to evaluate the number of hepatic metastases, while the depth of invasion and the Lauren classification could be used to evaluate the pattern of hepatic metastases in patients who underwent radical gastrectomy.Jing-Yu Deng Han Liang Dan Sun Hong-Jie Zhan Ru-Peng Zhang 2008World Journal of Gastroenterology2008,14,15:14
13Irregular surface of carotid atherosclerotic plaque is associated with ischemic stroke: a magnetic resonance imaging study显示文摘Objective To determine the association between the irregularity of carotid plaque surface using multidimensional magnetic resonance imaging(MRI) of ipsilateral acute cerebral infarction(ACI) cases. Methods Patients with recent cerebrovascular symptoms(stroke or transient ischemic attack < 2 weeks) and atherosclerotic plaque in at least one carotid artery were diagnosed by B-mode ultrasound imaging(intima-media thickness ≥ 1.5 mm) and recruited for the present study. Irregular surface was defined when plaque surface was uneven with high and low fluctuation or plaque with surface ulceration. The irregularity of carotid plaque surface was determined on axial or oblique images alone(single-dimension) and on both axial images and oblique images(multidimensions), separately. Univariate and multivariate logistic regression analyses were performed to calculate the odds ratio(OR) and the corresponding 95% CI of the irregular plaque surface in discriminating the presence of ipsilateral ACI. Results A total of 217 included subjects(mean age: 60.7 ± 10.2 years, 149 men) were recruited and 89(41.0%), 88(40.6%) and 118(54.4%) of them exhibited irregular plaque surface on axial, oblique and multidimensional MR images, respectively. The OR of irregularity of the plaque surface was determined by multidimensional MRI to be 5.88(95% CI: 3.16–10.96, P < 0.001) in discriminating the presence of ipsilateral ACI. Following adjustment for clinical confounding factors, this association remained statistically significant(OR = 5.65, 95% CI: 2.53–12.60, P < 0.001). The analysis included further adjustment for the presence of lipid-rich necrotic core, intraplaque hemorrhage and stenosis and the results included that this association also remained statistically significant(OR = 6.08, 95% CI: 2.52–14.68, P < 0.001). Conclusions The irregular plaque surface was determined by multidimensional MRI as an independent indicator for ipsilateral acute cerebral infarction.Dan ZHOU Jin LI Dong LIU Li-Ya JI Na-Qin WANG Jie DENG Ji-Chen WANG Min YE Xi-Hai ZHAO 2019Journal of Geriatric Cardiology2019,16,12:13
14MicroTom Metabolic Network: Rewiring Tomato Metabolic Regulatory Network throughout the Growth Cycle显示文摘Tomato(Solanum lycopersicum)is a major horticultural crop worldwide and has emerged as a preeminent model for metabolic research.Although many research efforts have focused on the analysis of metabolite differences between varieties and species,the dynamics of metabolic changes during the tomato growth cycle and the regulatory networks that underlie these changes are poorly understood.In this study,we integrated high-resolution spatio-temporal metabolome and transcriptome data to systematically explore the metabolic landscape across 20 major tomato tissues and growth stages.In the resulting MicroTom Metabolic Network,the 540 detected metabolites and their co-expressed genes could be divided into 10 distinct clusters based on their biological functions.Using this dataset,we constructed a global map of the major metabolic changes that occur throughout the tomato growth cycle and dissected the underlying regulatory network.In addition to verifying previously well-established regulatory networks for important metabolites,we identified novel transcription factors that regulate the biosynthesis of important secondary metabolites such as steroidal glycoalkaloids and flavonoids.Our findings provide insights into spatiotemporal changes in tomato metabolism and generate a valuable resource for the study of metabolic regulatory processes in model plants.Yan Li Yang Chen Lu Zhou Shengjie You Heng Deng Ya Chen Saleh Alseekh Yong Yuan Rao Fu Zixin Zhang Dan Su Alisdair R.Fernie Mondher Bouzayen Tao Ma Mingchun Liu Yang Zhang 2020Molecular Plant2020,13,8:10
15Numerical simulation of land subsidence and verification of its character for an iron mine using sublevel caving显示文摘Combined with a digital bored photography system and in-situ statistics concerning the joints and fissures of both ore-body and surrounding rock,a 2D discrete model was constructed using UDEC.The stress field and displacement field changes of different sublevel stoping systems were also studied.Changes in the overlying rock strata settlement pattern has been analyzed and validated by in-situ monitoring data.The results show that:in the caving process,there exists an obvious delay and jump for the overlying rock strata displacement over time,and a stable arch can be formed in the process of caving,which leads to hidden goafs.Disturbed by the mining activity,a stress increase occurred in both the hanging wall and the foot wall,demonstrating a hump-shaped distribution pattern.From the comparison between simulation results and in-situ monitoring results,land subsidence shows a slow-development,suddenfailure,slow-development cycle pattern,which leads eventually to a stable state.This pattern validates the existence of balanced arch and hidden goafs.Cao Shuai Song Weidong Deng Dan Lei Yuankun Lan Jianqiang 2016International Journal of Mining Science and Technology2016,26,2:9
16Relationship between pre-TIPS hepatic hemodynamics and postoperative incidence of hepatic encephalopathy显示文摘BACKGROUND: Hepatic encephalopathy (HE) is one of the complications that have limited the effectiveness of transjugular intrahepatic portosystemic shunt (TIPS) most significantly. Up to the present, the predicting factors of HE post-TIPS have been debated controversially. This study was undertaken to verify the relationship between pre-TIPS intrahepatic hemodynamics and the incidence of post-TIPS HE. METHODS: The hepatic blood dynamics was evaluated in 41 patients with liver cirrhosis before TIPS and at one month after TIPS by ultrasonography. The patients were divided into two groups according to Doppler findings before TIPS: group 1, patients with prograde portal flow, and group 2, patients with hepatofugal or back-forth portal flow. The clinical characteristics (age, sex, etiology of liver disease, pre-TIPS Child-Pugh score, incidence of pre-TIPS HE, and portacaval pressure gradient), incidence of post TIPS HE, and pre-/post-TIPS hepatic arterial resistant index (RI) in the two groups were compared. The independent prognostic value of pre-TIPS variables for the onset of HE after TIPS, including age, Child-Pugh score, presence of HE before TIPS, and the pattern of portal flow, was tested with a multiple-factor regression analysis. RESULTS: No significant difference in age, etiology of liver disease, indications of TIPS placement, incidence of HE before TIPS, and portacaval gradient before and after TIPS was observed between the two groups; but liver failure was more severe in group 2 (P<0.05). The incidence of post-TIPS HE in group 2 was significantly lower than that in group 1 (P<0.01). Pre-TIPS, the RI of the hepatic artery in group 1 was significantly higher than that in group 2 (P<0.01). However, TIPS induced a significantly decreased RI in group 1 (P <0.01), but not in group 2. Multiple-factor regression analysis demonstrated that the pattern of portal flow before TIPS was closely associated with the onset of post TIPS HE. CONCLUSIONS: Pre-TIPS intrahepatic hetnodynamics is closely related to the incidence of post-TIPS HE. Hepatic hetnodynamics of patients with hepatofugal portal blood flow only changes a little after TIPS and still provides compensatory blood supply of the hepatic artery, and the hepatic function is less affected. Hence HE is unlikely. Hepatic hemodynamics of patients with prograde portal blood flow changes a lot after TIPS, and dual blood supply of the portal vein and hepatic artery changes into compensatory blood supply of the hepatic artery, and hepatic function suffers greatly in a short time. Thus HE is mostly likely.Dan Deng, Ming-Song Liao, Jian-Ping Qin and Xiao-An Li Departments of Ultrasonography Gastroenterology General Hospital, Cheng- du Military Command, Chengdu 610083, China 2006Hepatobiliary & Pancreatic Diseases International2006,5,2:9
17Macrophage migration inhibitory factor as a potential prognostic factor in gastric cancer显示文摘AIM:To investigate macrophage migration inhibitory factor(MIF) expression and its clinical relevance in gastric cancer,and effects of MIF knockdown on proliferation of gastric cancer cells. METHODS:Tissue microarray containing 117 samples of gastric cancer and adjacent non-cancer normal tissues was studied for MIF expression by immunohistochemistry(IHC) semiquantitatively,and the association of MIF expression with clinical parameters was analyzed. MIF expression in gastric cancer cell lines was detected by reverse transcriptionpolymerase chain reaction(RT-PCR) and Western blot. Two pairs of si RNA targeting the MIF gene(MIF si-1 and MIF si-2) and one pair of scrambled si RNA as a negative control(NC) were designed and chemically synthesized. All si RNAs were transiently transfected in AGS cells with OligofectamineTM to knock down the MIF expression,with the NC group and mock group(OligofectamineTM alone) as controls. At 24,48,and 72 h after transfection,MIF m RNA was analyzed by RTPCR,and MIF and proliferating cell nuclear antigen(PCNA) proteins were detected by Western blot.The proliferative rate of AGS cells was assessed by methylthiazolyl tetrazolium(MTT) assay and colony forming assay.RESULTS:The tissue microarray was informative for IHC staining,in which the MIF expression in gastric cancer tissues was higher than that in adjacent noncancer normal tissues(P < 0.001),and high level of MIF was related to poor tumor differentiation,advanced T stage,advanced tumor stage,lymph node metastasis,and poor patient survival(P < 0.05 for all). After si RNA transfection,MIF m RNA was measured by real-time PCR,and MIF protein and PCNA were assessed by Western blot analysis. We found that compared to the NC group and mock group,MIF expression was knocked down successfully in gastric cancer cells,and PCNA expression was downregulated with MIF knockdown as well. The cell counts and the doubling times were assayed by MTT 4 d after transfection,and colonies formed were assayed by colony forming assay 10 d after transfection; all these showed significant changes in gastric cancer cells transfected with specific si RNA compared with the control si RNA and mock groups(P < 0.001 for all).CONCLUSION:MIF could be of prognostic value in gastric cancer and might be a potential target for small-molecule therapy.Long-Jun He Dan Xie Pin-Jin Hu Yi-Ji Liao Hai-Xia Deng Hsiang-Fu Kung Sen-Lin Zhu 2015World Journal of Gastroenterology2015,21,34:9
18Gold nanoflowers for 3D volumetric molecular imaging of tumors by photoacoustic tomography显示文摘By binding molecular probes that target tumor cells, gold nanoparticles (AuNPs) with superior characteristics have shown great potential in tumor molecular imaging studies. The non-invasive, high-resolution, and three-dimensional imaging of the targeted AuNPs within the tumor is desirable for both diagnosis and therapy. In this study, gold nanoflowers (AuNFs) are presented as a novel contrast agent for photoacoustic tomography (PAT). By binding to folic acid, the molecular probe, the tail-vein injected AuNFs concentrated within the tumor site in mice; this was clearly visualized by three-dimensional (3D) PAT imaging. In addition, toxicity assay proved that AuNFs were harmless to living cells and animals. Our results demonstrate that AuNFs have great potential in tumor molecular imaging.Yuanyuan Jiang Zijian Deng Dan Yang Xin Deng Qi Li Yinlin Sha Changhui Li Dongsheng Xu 2015Nano Research2015,8,7:8
19Increased expression of human calcium-activated chloride channel 1 is correlated with mucus overproduction in the airways of Chinese patients with chronic obstructive pulmonary disease显示文摘背景长期的妨碍的肺的疾病(COPD ) 与在航线的粘液生产过剩通常是复杂的。最近人的激活钙的氯化物隧道的增加的表示(CaCC1 ) 1 被发现在气喘的航线在粘液生产过剩起一个重要作用。在支气管的纸巾与 COPD, CaCC1 的表情, MUC5AC 和粘液在中国病人的航线调查 CaCC1 和粘液生产过剩的关系是 examined.Methods 支气管的纸巾在 2004 从 4 月在韦斯特中国医院里从 fiberoptic bronchoscopy 和支气管的活体检视被获得到 7 月。25 个病人与 COPD 生产过剩作为病人被诊断,并且另外的 20 是控制题目。在支气管的纸巾的 CaCC1 , MUC5AC 和粘蛋白的表情被反向的transcriptase聚合酶链反应( RT-PCR )检测,在有 digoxigenin 的 situ 杂交(挖) -Iabeled RNA 探查, immunohistochemical 和 alcian 染色的蓝色周期的酸 Schiff (AB舞步), respectively.Results 与控制组相比, CaCC1 的更强壮的表情进一步与 COPD ( P0.01 )从病人在整个支气管的纸巾被检测。而且, CaCC1 mRNA 的更强壮的表情与气流阻塞的严厉有关。从 COPD 的样品显示出在控制题目(P0.01 ) 的比那些的为 MUC5AC 的更强壮的染色,染色的 AB 舞步在 COPD 病人在控制题目(P0.01 ) 与那作比较的 submucosal 腺揭示了更多的粘蛋白。 CaCC1 mRNA 的表达式层次否定地分别地与病人一起被相关在/强迫了的一秒( FEV1 )强迫了吐气的体积重要能力( FVC )数据,FEV1%预言了数据,V50%预言了数据,V25%预言了数据( r=0.43 , r=0.43 , r=0.35 , r=0.36 , P0.01 , P0.01 , P0.05 , P0.05 )。当 CaCC1 mRNA 的表示层次很好与 MUC5AC 的表示层次被相关时,航线上皮和 PAS-AB 的 mRNA 染色了 submucosal 腺的区域(r=0.39, r=0.46, P0.05, P0.01 ) 。MUC5AC mRNA 的表示层次否定地与病人的 FEV1/FVC 数据(P=0.01 ) 被相关, FEV1%pred 数据(P=0.01 ) , V50% 预言了数据, V25% 预言了数据(r=0.53, r=0.53, r=0.48, r=0.43, P0.01, P0.01, P0.01, P0.01 ) 。当 MUC5AC mRNA 的表示层次很好被相关与时断然, PAS-AB 染色了 submucosal 腺(P0.05 ) 的区域,并且关联系数是这些结果建议的 0.43 .Conclusion CaCC1 的更强壮的基因表示存在,与在有 COPD 的中国病人的航线的粘液生产过剩复杂。WANG Ke FENG Yu-ling WEN Fu-qiang CHEN Xue-rong OU Xue-mei XU Dan YANG Jie DENG Zhi-pin 2007Chinese Medical Journal2007,,12:8
20Poly(amide-6-b-ethylene oxide)/SAPO-34 mixed matrix membrane for CO_2 separation显示文摘In this paper, poly(amide-6-b-ethylene oxide)(Pebax1657)/SAPO-34 mixed matrix membranes(MMMs) were prepared by solvent-evaporation method with acetic acid as a novel solvent. CO2, N2, CH4and H2permeation properties were investigated, and the physical properties of Pebax/SAPO-34 MMMs were characterized by XRD and SEM. At low SAPO-34 content, it was homogeneously distributed in the Pebax matrix, and then precipitated and agglomerated at high SAPO-34 content. The crystallinity of Pebax phase in Pebax/SAPO-34 MMMs decreased initially and then rebounded as a result of phase separation. With the increase of transmembrane pressure difference, CO2permeability was enhanced due to the effect of pressure-induced plasticization. Owing to the happening of stratification, the CO2permeability of Pebax/SAPO-34MMMs(50 wt% SAPO-34) increased to 338 Barrer from 111 Barrer of pristine Pebax, while the selectivities of CO2/CH4and CO2/N2were almost unchanged. Compared with the pristine Pebax, the gas separation performances of Pebax/SAPO-34 MMMs were remarkably enhanced.Dan Zhao Jizhong Ren Hui Li Kaisheng Hua Maicun Deng 2014Journal of Energy Chemistry2014,23,2:7
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