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| 1 | Double-stranded DNA in exosomes: a novel biomarker in cancer detection显示文摘 | Basant Kumar Thakur Haiying Zhang Annette Becker Irina Matei Yujie Huang Bruno Costa-Silva Yan Zheng Ayuko Hoshino Helene Brazier Jenny Xiang Caitlin Williams Ruth Rodriguez-Barrueco Jose M Silva Weijia Zhang Stephen Hearn Olivier Elemento Navid Paknejad Katia Manova-Todorova Karl Welte Jacqueline Bromberg Hector Peinado David Lyden | 2014 | Cell Research2014,24,6: | 98 |
| 2 | Gastroenteric tube feeding: Techniques, problems and solutions显示文摘Gastroenteric tube feeding plays a major role in the management of patients with poor voluntary intake,chronic neurological or mechanical dysphagia or gut dysfunction,and patients who are critically ill.However,despite the benefits and widespread use of enteral tube feeding,some patients experience complications.This review aims to discuss and compare current knowledge regarding the clinical application of enteral tube feeding,together with associated complications and special aspects.We conducted an extensive literature search on PubMed,Embase and Medline using index terms relating to enteral access,enteral feeding/nutrition,tube feeding,percutaneous endoscopic gastrostomy/jejunostomy,endoscopic nasoenteric tube,nasogastric tube,and refeeding syndrome.The literature showed common routes of enteral access to include nasoenteral tube,gastrostomy and jejunostomy,while complications fall into four major categories:mechanical,e.g.,tube blockage or removal;gastrointestinal,e.g.,diarrhea;infectious e.g.,aspiration pneumonia,tube site infection;and metabolic,e.g.,refeeding syndrome,hyperglycemia.Although the type and frequency of complications arising from tube feeding vary considerably according to the chosen access route,gastrointestinal complications are without doubt the most common.Complications associated with enteral tube feeding can be reduced by careful observance of guidelines,including those related to food composition,administration rate,portion size,food temperature and patient supervision. | Irina Blumenstein Yogesh M Shastri Jürgen Stein | 2014 | World Journal of Gastroenterology2014,20,26: | 63 |
| 3 | Ellagic acid induces apoptosis through inhibition of nuclear factor κB in pancreatic cancer cells显示文摘AIM:To determine the effect of ellagic acid on apop-tosis and proliferation in pancreatic cancer cells and to determine the mechanism of the pro-survival effects of ellagic acid. METHODS:The effect of ellagic acid on apoptosis was assessed by measuring Phosphatidylserine externalization,caspase activity,mitochondrial membrane potential and DNA fragmentation;and proliferation by measuring DNA thymidine incorporation. Mitochondrial membrane potential was measured in permeabilized cells,and in isolated mitochondria. Nuclear factor kB(NF-kB) activity was measured by electromobility shift assay(EMSA) . RESULTS:We show that ellagic acid,a polyphenolic compound in fruits and berries,at concentrations 10 to 50 mmol/L stimulates apoptosis in human pancreatic adenocarcinoma cells. Further,ellagic acid decreases proliferation by up to 20-fold at 50 mmol/L. Ellagic acid stimulates the mitochondrial pathway of apoptosis associated with mitochondrial depolarization,cytochrome C release,and the downstream caspaseactivation. Ellagic acid does not directly affect mitochondria. Ellagic acid dose-dependently decreased NF-kB binding activity. Furthermore,inhibition of NF-kB activity using IkB wild type plasmid prevented the effect of ellagic acid on apoptosis. CONCLUSION:Our data indicate that ellagic acid stimulates apoptosis through inhibition of the prosu-rvival transcription factor NF-kB. | Mouad Edderkaoui Irina Odinokova Izumi Ohno Ilya Gukovsky Vay Liang W Go Stephen J Pandol Anna S Gukovskaya | 2008 | World Journal of Gastroenterology2008,14,23: | 30 |
| 4 | Role of digital single-operator cholangioscopy in the diagnosis and treatment of biliary disorders显示文摘Due to the need for improvement in the diagnosis and minimally invasive therapy of the bile duct disorders new technologies for cholangioscopy have been recently developed. Per-oral cholangioscopy has become an important diagnostic and therapeutic tool leading to avoidance of aggressive and unnecessary surgery in many clinical scenarios. This paper focuses on the newly developed SpyGlass DS technology, its advantages, and the technique of single-operator cholangioscopy(SOC), biliary indications and possible adverse events. We also review the available literature; discuss the limitations and future expectations.Digital SOC(D-SOC) is a useful technique, which provides endoscopic imaging of the biliary tree, optical diagnosis, biopsy under direct vision and therapeutic interventions. The implementations are diagnostic and therapeutic. Diagnostic indications are indeterminate biliary strictures, unclear filling defects, staging of cholangiocarcinoma, staging of ampullary tumors(extension into the common bile duct), unclear bile duct dilation, exploring cystic lesions of the biliary tree,unexplained hemobilia, posttransplant biliary complications. Therapeutic indications are lithotripsy of difficult stones, retrieval of migrated stents, foreign body removal, guide wire placement, transpapillary gallbladder drainage and endoscopic tumor ablative therapy. Most studied and established indications are the diagnosis of indeterminate biliary stricture and intraductal lithotripsy of difficult stones. The adverse events are not different and more common compared to those of Endoscopic retrograde cholangiopancreatography(ERCP)alone. D-SOC is a safe and effective procedure, adjunct to the standard ERCP and the newly available digital technology overcomes many of the limitations of the previous generations of cholangioscopes. | Petko Karagyozov Irina Boeva Ivan Tishkov | 2019 | World Journal of Gastrointestinal Endoscopy2019,11,1: | 22 |
| 5 | Targeting of the AKT/m-TOR Pathway: Biomarkers of Resistance to Cancer Therapy——AKT/m-TOR Pathway and Resistance to Cancer Therapy显示文摘Resistance to cancer therapy continues to be a major limitation for the successful treatment of cancer. There are many published studies on therapy resistance in breast and prostate cancers; however, there are currently no data on molecular markers associated with resistance. The conflicting data were reported regarding the AKT/m-TOR signaling pathway components as markers predicting resistance. The AKT/m-TOR signaling pathway is involved in the development of many human cancers; its activation is related to cell proliferation, angiogenesis, apoptosis, as well as to therapy resistance. Molecular alterations in the AKT/m-TOR signaling pathway provide a platform to identify universal markers associated with the development of resistance to cancer therapy. | Liudmila V SPIRINA Irina V KONDAKOVA Natalia V TARASENKO Elena M SLONIMSKAYA Evgeny A USYNIN Alexey K GORBUNOV Zahar A YURMAZOV Svetlana Yu CHIGEVSKAYA | 2018 | 中国肺癌杂志2018,21,1: | 18 |
| 6 | Proton pump inhibitors therapy and risk of Clostridium difficile infection: Systematic review and meta-analysis显示文摘AIM To perform a systematic review and meta-analysis on proton pump inhibitors(PPIs) therapy and the risk of Clostridium difficile infection(CDI). METHODS We conducted a systematic search of MEDLINE/Pub Med and seven other databases through January 1990 to March 2017 for published studies that evaluated the association between PPIs and CDI. Adult case-control and cohort studies providing information on the association between PPI therapy and the development of CDI were included. Pooled odds ratios(ORs) estimates with 95% confidence intervals(CIs) were calculated using the random effect. Heterogeneity was assessed by I^2 test and Cochran's Q statistic.Potential publication bias was evaluated via funnel plot, and quality of studies by the Newcastle-Otawa Quality Assessment Scale(NOS). RESULTS Fifty-six studies(40 case-control and 16 cohort) involving 356683 patients met the inclusion criteria and were analyzed. Both the overall pooled estimates and subgroup analyses showed increased risk for CDI despite substantial statistical heterogeneity among studies. Meta-analysis of all studies combined showed a significant association between PPI users and the risk of CDI(pooled OR = 1.99, CI: 1.73-2.30, P < 0.001) as compared with non-users. The association remained significant in subgroup analyses: by design-case-control(OR = 2.00, CI: 1.68-2.38, P < 0.0001), and cohort(OR = 1.98, CI: 1.51-2.59, P < 0.0001); adjusted(OR = 1.95, CI: 1.67-2.27, P < 0.0001) and unadjusted(OR = 2.02, CI: 1.41-2.91, P < 0.0001); unicenter(OR = 2.18, CI: 1.72-2.75, P < 0.0001) and multicenter(OR = 1.82, CI: 1.51-2.19, P < 0.0001); age ≥ 65 years(OR = 1.93, CI: 1.40-2.68, P < 0.0001) and < 65 years(OR = 2.06, CI: 1.11-3.81, P < 0.01). No significant differences were found in subgroup analyses(test for heterogeneity): P = 0.93 for case-control vs cohort, P = 0.85 for adjusted vs unadjusted, P = 0.24 for unicenter vs multicenter, P = 0.86 for age ≥ 65 years and < 65 years. There was significant heterogeneity across studies(I^2 = 85.4%, P < 0.001) as well as evidence of publication bias(funnel plot asymmetry test, P = 0.002). CONCLUSION This meta-analysis provides further evidence that PPI use is associated with an increased risk for development of CDI. Further high-quality, prospective studies are needed to assess whether this association is causal. | Anca Trifan Carol Stanciu Irina Girleanu Oana Cristina Stoica Ana Maria Singeap Roxana Maxim Stefan Andrei Chiriac Alin Ciobica Lucian Boiculese | 2017 | World Journal of Gastroenterology2017,23,35: | 15 |
| 7 | Effect of Helicobacter pylori on gastric epithelial cells显示文摘The gastrointestinal epithelium has cells with features that make them a powerful line of defense in innate mucosal immunity. Features that allow gastrointestinal epithelial cells to contribute in innate defense include cell barrier integrity, cell turnover, autophagy, and innate immune responses. Helicobacter pylori(H. pylori) is a spiral shape gram negative bacterium that selectively colonizes the gastric epithelium of more than half of the world's population. The infection invariably becomes persistent due to highly specialized mechanisms that facilitate H. pylori 's avoidance of this initial line of host defense as well as adaptive immune mechanisms. The host response is thus unsuccessful in clearing the infection and as a result becomes established as a persistent infection promoting chronic inflammation. In some individuals the associated inflammation contributes to ulcerogenesis or neoplasia. H. pylori has an array of different strategies to interact intimately with epithelial cells and manipulate their cellular processes and functions. Among the multiple aspects that H. pylori affects in gastric epithelial cells are their distribution of epithelial junctions, DNA damage, apoptosis, proliferation, stimulation of cytokine production, and cell transformation. Some of these processes are initiated as a result of the activation of signaling mechanisms activated on binding of H. pylori to cell surface receptors or via soluble virulence factors that gain access to the epithelium. The multiple responses by the epithelium to the infection contribute to pathogenesis associated with H. pylori. | Shatha Alzahrani Taslima T Lina Jazmin Gonzalez Irina V Pinchuk Ellen J Beswick Victor E Reyes | 2014 | World Journal of Gastroenterology2014,20,36: | 15 |
| 8 | Immunopathogenesis of chronic hepatitis B显示文摘Chronic hepatitis B(CHB) is a widespread infectious disease with unfavorable outcomes and life-threatening consequences for patients, in spite of modern vaccination and antiviral treatment modalities. Cutting-edge experimental approaches have demonstrated key pathways that involve cross-talk between viral particles and host immune cells. All events, including penetration of hepatitis B virus(HBV) particles into host cells, establishing persistence, and chronization of CHB infection, and possibility of complete elimination of HBV particles are controlled by the immune system. Researchers have paid special attention to the replication capacity of HBV in host cells, which is associated with cellular changes that reflect presentation of viral antigens and variability of HBV antigen features. In addition, specific HBV proteins have an immune-modulating ability to initiate molecular mechanisms that 'avoid' control by the immune system. The relationship between immunological shifts and chronic infection stages has been intensively studied since it was recognized that the immune system is a direct participant in the recurrent(cyclic) nature of CHB. Understanding the wide diversity of molecular pathways and the crosstalk between innate and adaptive immune system components will provide fresh insight into CHB immune pathogenesis and the possibilities of developing new treatment strategies for this disease. | Irina P Balmasova Nikolay D Yushchuk Ospan A Mynbaev Nageswara R Alla Elena S Malova Zhongjie Shi Chang-Lu Gao | 2014 | World Journal of Gastroenterology2014,20,39: | 15 |
| 9 | 桦褐孔菌菌核提取物对细菌抑菌活性研究显示文摘采用纸片法研究了桦褐孔菌的水、甲醇、丙酮、氯仿、石油醚提取物对大肠杆菌ERcat、EnR£、ATCC25923和金黄色葡萄球菌ATCC25923、O41ermc的抑制作用。结果表明:桦褐孔菌各提取物对大肠杆菌ERcat、ATCC25923和金黄色葡萄球菌O41ermc均有不同程度的抑制作用。其中甲醇提取物在10mg·mL-1浓度下对大肠杆菌ERcat的抑菌效果最好,抑制率高达84.1%;石油醚提取物对除大肠杆菌EnR£以外的其它供试菌株均表现出显著的抑菌活性。另外,浓度为10mg·mL-1的丙酮提取物对大肠杆菌EnR£的生长有一定的抑制作用;浓度2.5mg·mL-1的甲醇提取物和浓度10mg·mL-1的石油醚提取物对金黄色葡萄球菌ATCC25923的抑菌作用较为明显。 | 刘迎秋 熊红霞 包海鹰 Irina A.Gorbunova 李玉 | 2009 | 中国食用菌2009,28,2: | 13 |
| 10 | 沈抚石油污水灌区稻田土壤细菌遗传多样性——16S rDNA-PCR-DGGE分析显示文摘以不依赖于培养的16S rDNA-PCR-DGGE技术,评价了石油污染对我国最大的石油污水灌区——沈抚灌区稻田土壤细菌遗传多样性的影响,并对微生物群落中的优势菌群进行了研究。结果表明,沈抚灌区土壤总石油烃(Total petroleum hydrocarbon,TPH)含量为277—5213mgkg^-1干土,TPH在灌区干渠和支渠中的积累和分布趋势大体上是上游地区较严重,下游地区较轻,并且与土壤中有机质含量呈显著正相关(r=0.691,P〈0.05)。在目前的污染程度下,石油污水能够刺激土壤好氧异养细菌(Aerobic heterotrophic bacteria,AHB)的生长,其数量与TPH含量呈显著正相关(r=0.928,P〈0.001),而细菌遗传多样性与TPH含量呈显著负相关(r=-0.715,P=0.013)。DGGE图谱优势条带测序结果表明沈抚灌区土壤细菌群落中的优势菌群为变形细菌(Proteobacteria)β-亚群和γ-亚群的菌种,这些优势菌群的形成可能与石油烃的生物降解有关。 | 李慧 张颖 苏振成 徐慧 KRAVCHENKO Irina 张成刚 | 2006 | 土壤学报2006,43,6: | 12 |
| 11 | 生态地质调查评价——以辽宁铁岭地区为例显示文摘参照俄罗斯生态地质调查评价方法,结合辽宁铁岭地区资源与环境状况,增加了土壤侵蚀、土壤厚度及植被发育状况等相关调查内容,建立了基于'土壤、植被、水文及地质灾害发育程度等'评价指标的'生态地质综合评价法'.由此将工作区划分出5类生态地质景观,提出了相应的资源开发与环境保护建议. | 陈树旺 邢德和 丁秋红 郑月娟 高飞 卞雄飞 张志斌 商翎 Antonina A.Zhukovskaya Irina V.Ershova Nadezhda A.Tomilovskaya | 2012 | 地质与资源2012,21,6: | 12 |
| 12 | Engineering of Yarrowia lipolytica for production of astaxanthin显示文摘Astaxanthin is a red-colored carotenoid,used as food and feed additive.Astaxanthin is mainly produced by chemical synthesis,however,the process is expensive and synthetic astaxanthin is not approved for human consumption.In this study,we engineered the oleaginous yeast Yarrowia lipolytica for de novo production of astaxanthin by fermentation.First,we screened 12 different Y.lipolytica isolates for β-carotene production by introducing two genes for β-carotene biosynthesis:bi-functional phytoene synthase/lycopene cyclase(crtYB)and phytoene desaturase(crtI)from the red yeast Xanthophyllomyces dendrorhous.The best strain produced 31.1±0.5 mg/L β-carotene.Next,we optimized the activities of 3-hydroxy-3-methylglutaryl-coenzyme A reductase(HMG1)and geranylgeranyl diphosphate synthase(GGS1/crtE)in the best producing strain and obtained 453.9±20.2 mg/L β-carotene.Additional downregulation of the competing squalene synthase SQS1 increased the β-carotene titer to 797.1±57.2 mg/L.Then we introduced β-carotene ketolase(crtW)from Paracoccus sp.N81106 and hydroxylase(crtZ)from Pantoea ananatis to convert β-carotene into astaxanthin.The constructed strain accumulated 10.4±0.5 mg/L of astaxanthin but also accumulated astaxanthin biosynthesis intermediates,5.7±0.5 mg/L canthaxanthin,and 35.3±1.8 mg/L echinenone.Finally,we optimized the copy numbers of crtZ and crtW to obtain 3.5 mg/g DCW(54.6 mg/L)of astaxanthin in a microtiter plate cultivation.Our study for the first time reports engineering of Y.lipolytica for the production of astaxanthin.The high astaxanthin content and titer obtained even in a small-scale cultivation demonstrates a strong potential for Y.lipolytica-based fermentation process for astaxanthin production. | Kanchana Rueksomtawin Kildegaard Belen Adiego-Perez David Domenech Belda Jaspreet Kaur Khangura Carina Holkenbrink Irina Borodina | 2017 | Synthetic and Systems Biotechnology2017,2,4: | 12 |
| 13 | Impact of Clostridium difficile infection on inflammatory bowel disease outcome: A review显示文摘Although a considerable number of studies support a substantial increase in incidence, severity, and healthcare costs for Clostridium difficile infection(CDI) in inflammatory bowel disease(IBD), only few evaluate its impact on IBD outcome. Medline and several other electronic databases from January 1993 to October 2013 were searched in order to identify potentially relevant literature. Most of the studies showed that IBD patients with CDI present a greater proportion of worse outcomes than those without CDI. These patients have longer length of hospital stay, higher rates of colectomies, and increased mortality. Patients with ulcerative colitis are more susceptible to CDI and have more severe outcomes than those with Crohn's disease. However, studies reported variable results in both short-and long-term outcomes. Contrasting results were also found between studies using nationwide data and those reporting from single-center, or between some NorthAmerican and European studies. An important limitation of all studies analyzed was their retrospective design. Due to contrasting data often provided by retrospective studies, further prospective multi-center studies are necessary to evaluate CDI impact on IBD outcome. Until then, a rapid diagnosis and adequate therapy of infection are of paramount importance to improve IBD patients' outcome. The aim of this article is to provide up to date information regarding CDI impact on outcome in IBD patients. | Anca Trifan Carol Stanciu Oana Stoica Irina Girleanu Camelia Cojocariu | 2014 | World Journal of Gastroenterology2014,20,33: | 11 |
| 14 | The enhanced X-ray Timing and Polarimetry mission—eXTP显示文摘In this paper we present the enhanced X-ray Timing and Polarimetry mission—eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources.The paper provides a detailed description of:(1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload;(2) the elements and functions of the mission, from the spacecraft to the ground segment. | ShuangNan Zhang Andrea Santangelo Marco Feroci YuPeng Xu FangJun Lu Yong Chen Hua Feng Shu Zhang Sφren Brandt Margarita Hernanz Luca Baldini Enrico Bozzo Riccardo Campana Alessandra De Rosa YongWei Dong Yuri Evangelista Vladimir Karas Norbert Meidinger Aline Meuris Kirpal Nandra Teng Pan Giovanni Pareschi Piotr Orleanski QiuShi Huang Stephane Schanne Giorgia Sironi Daniele Spiga Jiri Svoboda Gianpiero Tagliaferri Christoph Tenzer Andrea Vacchi Silvia Zane Dave Walton ZhanShan Wang Berend Winter Xin Wu Jean J.M.in't Zand Mahdi Ahangarianabhari Giovanni Ambrosi Filippo Ambrosino Marco Barbera Stefano Basso Jörg Bayer Ronaldo Bellazzini Pierluigi Bellutti Bruna Bertucci Giuseppe Bertuccio Giacomo Borghi XueLei Cao Franck Cadoux Francesco Ceraudo TianXiang Chen Yu Peng Chen Jerome Chevenez Marta Civitani Wei Cui WeiWei Cui Thomas Dauser Ettore Del Monte Sergio Di Cosimo Sebastian Diebold Victor Doroshenko Michal Dovciak YuanYuan Du Lorenzo Ducci QingMei Fan Yannick Favre Fabio Fuschino JoséLuis Ga'lvez Min Gao MingYu Ge Olivier Gevin Marco Grassi QuanYing Gu YuDong Gu DaWei Han Bin Hong Wei Hu Long Ji ShuMei Jia WeiChun Jiang Thomas Kennedy Ingo Kreykenbohm Irfan Kuvvetli Claudio Labanti Luca Latronico Gang Li MaoShun Li Xian Li Wei Li ZhengWei Li Olivier Limousin HongWei Liu XiaoJing Liu Bo Lu Tao Luo Daniele Macera Piero Malcovati Adrian Martindale Malgorzata Michalska Bin Meng Massimo Minuti Alfredo Morbidini Fabio Muleri Stephane Paltani Emanuele Perinati Antonino Picciotto Claudio Piemonte JinLu Qu Alexandre Rachevski Irina Rashevskaya Jerome Rodriguez Thomas Schanz ZhengXiang Shen LiZhi Sheng JiangBo Song LiMing Song Carmelo Sgro Liang Sun Ying Tan Phil Uttley Bo Wang DianLong Wang GuoFeng Wang Juan Wang LangPing Wang YuSa Wang Anna L.Watts XiangYang Wen Jörn Wilms ShaoLin Xiong JiaWei Yang Sheng Yang YanJi Yang Nian Yu WenDa Zhang Gianluigi Zampa Nicola Zampa Andrzej A.Zdziarski AiMei Zhang ChengMo Zhang Fan Zhang Long Zhang Tong Zhang Yi Zhang XiaoLi Zhang ZiLiang Zhang BaoSheng Zhao ShiJie Zheng Yu Peng Zhou Nicola Zorzi J.Frans Zwart | 2019 | Science China(Physics,Mechanics & Astronomy)2019,62,2: | 11 |
| 15 | Serum leptin levels and insulin resistance are associated with gallstone disease in overweight subjects显示文摘AIM: To establish an association between the serum leptin levels and the development of gallstone disease (GD).METHODS: We carried out a non-matched case-controlled study in a university hospital in Mexico City. Two hundred and eighty-seven subjects were included: 97 cases with gallstones and 190 controls. Body mass index (BMI), fasting plasma leptin, insulin, serum lipid, and lipoprotein levels were measured. Insulin resistance was calculated by homeostasis model assessment (HOMA-IR). Unconditional logistic regression analysis (univariate and multivariate)stratified by BMI was used to calculate the risk of GD.RESULTS: The multivariate conditional regression analysis revealed a model for those patients with BMI <30. The selected variables in the model were HOMA-IR index with OR = 1.31, P= 0.02 and leptin higher than median with OR = 2.11, P= 0.05. In the stratum of BMI ≥30, we did not find a useful model.CONCLUSION: We concluded that insulin resistance and the development of GD appears to be associated with serum leptin levels in subjects with overweight, but not in obese subjects with similar metabolic profiles. | Nahum Méndez-Sánchez Luisa B Bermejo-Martínez Yolanda Vi(n|~)als Norberto C Chavez-Tapia Irina Vander Graff Guadalupe Ponciano-Rodríguez Martha H Ramos Misael Uribe | 2005 | World Journal of Gastroenterology2005,11,39: | 11 |
| 16 | Post-liver transplant biliary complications:Current knowledge and therapeutic advances显示文摘Liver transplantation is the current standard of care for end-stage liver disease and an accepted therapeutic option for acute liver failure and primary liver tumors.Despite the remarkable advances in the surgical techniques and immunosuppressive therapy,the postoperative morbidity and mortality still remain high and the leading causes are biliary complications,which affect up to one quarter of recipients.The most common biliary complications are anastomotic and non-anastomotic biliary strictures,leaks,bile duct stones,sludge and casts.Despite the absence of a recommended treatment algorithm many options are available,such as surgery,percutaneous techniques and interventional endoscopy.In the last few years,endoscopic techniques have widely replaced the more aggressive percutaneous and surgical approaches.Endoscopic retrograde cholangiography is the preferred technique when duct-to-duct anastomosis has been performed.Recently,new devices and techniques have been developed and this has led to a remarkable increase in the success rate of minimally invasive procedures.Understanding the mechanisms of biliary complications helps in their early recognition which is the prerequisite for successful treatment.Aggressive endoscopic therapy is essential for the reduction of morbidity and mortality in these cases.This article focuses on the common post-transplant biliary complications and the available interventional treatment modalities. | Irina Boeva Petko Ivanov Karagyozov Ivan Tishkov | 2021 | World Journal of Hepatology2021,13,1: | 11 |
| 17 | Dynamic changes in microbial activity and community structure during biodegradation of petroleum compounds:A laboratory experiment显示文摘与在实验室的 110-d 孵化实验,微生物引起的数量的回答,土壤酶的活动,和到柴油修正案的不同数量的细菌的社区结构被学习揭示某些生物、生物化学的特征是否能在草地褐土壤用作石油烃污染的可靠指示物,并且使用这些指示物在 Shenfu 灌溉区域在土壤功能上评估50年的精制石油的废水灌溉的实际生态的影响。结果证明≤ 1 的修正案 000 mg/kg 柴油刺激了氧气的异养细菌的生长,并且增加了土壤脱氢酶, hydrogenperoxidase,多酚氧化酶和导致底层的呼吸的活动。土壤细菌的差异在孵化的开始的 15 d 期间稍微减少了并且在白天 30 上恢复了到控制水平。当土壤与≥ 5 被修改时,形成土壤放线菌和细丝状的真菌的单位的殖民地的重要减少能作为石油污染的敏感生物指示物被拿 000 mg/kg 柴油。在脲酶活动的锋利的减少被推荐为重柴油污染的最敏感的生物化学的指示物。在到 Sphingomonadaceae 在 Proteobacteria 的α - 亚群以内记录的一个社区的社区结构的移动能作为柴油污染的敏感、精确的指示物被服务。基于在这篇论文描述的结果,在 Shenfu 灌溉区域的土壤功能被扰乱到某程度。 | LI Hui ZHANG Ying KRAVCHENKO Irina XU Hui ZHANG Cheng-gang | 2007 | Journal of Environmental Sciences2007,19,8: | 11 |
| 18 | Species concepts and biodiversity in Trichoderma and Hypocrea:from aggregate species to species clusters?显示文摘Trichoderma/Hypocrea is a genus of soil-borne or wood-decaying fungi containing members important to mankind as producers of industrial enzymes and biocontrol agents against plant pathogens, but also as opportunistic pathogens of immunocompromised humans. Species identification, while essential in view of the controversial properties of taxa ofthis genus, has been problematic by traditional methods. Here we will present a critical survey of the various identification methods in use. In addition,we will present an update on the taxonomy and phylogeny of the 88 taxa (which occur as 14 holomorphs, 49 teleomorphs and 25 anamorphs in nature) of Trichoderma/Hypocrea that have been confirmed by a combination of morphological, physiological and genetic approaches. | DRUZHININA Irina KUBICEK Christian P. | 2005 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2005,6,2: | 10 |
| 19 | Superior mesenteric artery first approach versus standard pancreaticoduodenectomy: a systematic review and meta-analysis显示文摘BACKGROUND: The superior mesenteric artery(SMA) first approach was proposed recently as a new modification of the standard pancreaticoduodenectomy. Increasing evidence showed that a periadventiceal dissection of the SMA with early transection of the inflow during pancreaticoduodenectomy associates better early perioperative results, and setup the scene for long-term oncological benefits. The objectives of the current study are to compare the operative results and long-term oncological outcomes of SMA first approach pancreaticoduodenectomy(SMA-PD) with standard pancreaticoduodenectomy(S-PD).DATA SOURCES: Electronic search of the PubM ed/MEDLINE, EMBASE, Web of Science and Cochrane Library was performed until July 2015. We considered randomized controlled trials(RCTs) and non-randomized comparative studies(NRCSs) comparing SMA-PD with S-PD to be eligible if they included patients with periampullary cancers.RESULTS: A total of one RCT and thirteen NRCSs met the inclusion criteria, involving 640 patients with SMA-PD and 514 patients with S-PD. The SMA-PD was associated with less intraoperative bleeding, less blood transfusions and higher rate of associated venous resections. The pancreatic fistula and delayed gastric emptying had a significantly lower rate in the SMA-PD group. There were no differences between the two approaches regarding overall complications, major complication rates and in-hospital mortality. There was no difference regarding R0 resection rate, and one-, two-or three-year over-all survival. The SMA-PD was associated with a lower local, hepatic and extrahepatic metastatic rate.CONCLUSIONS: The SMA-PD is associated with better perioperative outcomes, such as blood loss, transfusion requirements, pancreatic fistula, and delayed gastric emptying. Although the one-, two-or three-year overall survival rate is not superior, the SMA-PD has a lower local and metastatic recurrence rate. | Ionut Negoi Sorin Hostiuc Alexandru Runcanu Ruxandra Irina Negoi Mircea Beuran | 2017 | Hepatobiliary & Pancreatic Diseases International2017,16,2: | 10 |
| 20 | 制备条件对稀土掺杂TiO_2物理性质和光催化降解吡唑草胺性能的影响(英文)显示文摘多相光催化是一种非常有效的降解各种水污染物的方法.本文以稀土(镝和镨)掺杂的TiO2为光催化剂,考察了制备条件对其物理性质和光催化性能的影响.采用溶胶-凝胶法和不同条件(反应温度450,550,650 oC;反应时间4,8,12 h)的固态反应法制备了TiO2样品.运用X射线衍射分析了该样品的晶相,发现只存在锐钛矿相,并得到Raman光谱的证实.同时采用扫描电镜观察了样品的结构和粒径;以BET法计算了其比表面积;运用紫外-可见光漫反射光谱测得了样品的带隙能量.通过测量紫外光照射下常用除草剂吡唑草胺的降解速率评价了样品的光催化活性,反应过程中吡唑草胺的浓度用高效液相色谱分析.结果表明,稀土掺杂使得TiO2吸收边红移,并提高了其光催化活性;制备时最优的固态反应条件为550 oC反应8 h. | Marcela Kralova Irina Levchuk Vit Kasparek Mika Sillanpaa Jaroslav Cihlar | 2015 | 催化学报2015,36,10: | 9 |