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| 1 | Analysis of Autopilot Disengagements Occurring During Autonomous Vehicle Testing显示文摘In present-day highly-automated vehicles, there are occasions when the driving system disengages and the human driver is required to take-over. This is of great importance to a vehicle's safety and ride comfort. In the U.S state of California, the Autonomous Vehicle Testing Regulations require every manufacturer testing autonomous vehicles on public roads to submit an annual report summarizing the disengagements of the technology experienced during testing. On 1 January 2016,seven manufacturers submitted their first disengagement reports:Bosch, Delphi, Google, Nissan, Mercedes-Benz, Volkswagen, and Tesla Motors. This work analyses the data from these disengagement reports with the aim of gaining abetter understanding of the situations in which a driver is required to takeover, as this is potentially useful in improving the Society of Automotive Engineers(SAE) Level 2 and Level 3 automation technologies.Disengagement events from testing are classified into different groups based on attributes and the causes of disengagement are investigated and compared in detail. The mechanisms and time taken for take-over transition occurred in disengagements are studied. Finally, recommendations for OEMs, manufacturers, and government organizations are also discussed. | Chen Lv Dongpu Cao Yifan Zhao Daniel J. Auger Mark Sullman Huaji Wang Laura Millen Dutka Lee Skrypchuk Alexandros Mouzakitis | 2018 | IEEE/CAA Journal of Automatica Sinica2018,5,1: | 15 |
| 2 | Effect of percutaneous endoscopic gastrostomy on gastroesophageal reflux in mechanically-ventilated patients显示文摘瞄准:在机械地通气的病人在胃的食道的倒流(GER ) 上调查经皮的内视镜的胃造口术(木钉) 的效果。方法:在未来的、使随机化的、控制研究有周期性或坚持的联系通风机的肺病(VAP ) 和 GER >
的 36 个病人 6% 被划分成木钉组(n = 16 ) 或非木钉组(n = 20 ) 。11 通气了没有倒流的病人(GER <
3%) 用作控制组。食道的 pH-metry 被执行由在基线“渡过”方法,在木钉以后的 2 和 7 d。病人们严格地被跟随在上面为胃的滋养的残余的半侧卧的位置和控制。结果:median (范围)的重要减少倒流从 7.8 在木钉组被观察( 6.2 - 15.6 )在到 2.7 的基线( 0 - 10.4 )在 d 上 7 post-gastrostomy ( P <
0.01 ),当倒流从 9 增加了时( 6.2 - 22 )到 10.8 ( 6.3 - 36.6 )( P <
0.01 )在非木钉组。在 GER (%) 和 nasogastric 试管的停留之间的重要关联被检测(r = 0.56, P <
0.01 ) 。结论:胃造口术什么时候与滋养的胃的残余的半侧卧的位置和缺席结合了,在通气病人减少胃的食道的倒流。 | Emmanuel E Douzinas Andreas Tsapalos Antonios Dimitrakopoulos Evanthia Diamanti-Kandarakis Alexandros D Rapidis Charis Roussos | 2006 | World Journal of Gastroenterology2006,12,1: | 15 |
| 3 | Small-bowel capsule endoscopy: A ten-point contemporary review显示文摘The introduction of capsule endoscopy (CE) in clinical practice increased the interest for the study of the small-bowel. Consequently, in about 10 years, an impressive quantity of literature on indications, diagnostic yield (DY), safety profile and technical evolution of CE has been published as well as several reviews. At present time, there are 5 small-bowel capsule enteroscopy (SBCE) models in the worldwide market. Head-to-head trials have showed in the great majority of studies comparable results in terms of DY, image quality and completion rate. CE meta-analyses formed the basis of national/international guidelines; these guidelines place CE in a prime position for the diagnostic work-up of patients with obscure gastrointestinal bleeding, known and/or suspected Crohn's disease and possible small-bowel neoplasia. A 2-L polyethylene glycol-based purge, administered the day before the procedure,is the most widely practiced preparation regimen. Whether this regimen can be further improved (i.e. , by further decreasing its volume, changing the timing of administration, coupling it with prokinetics and/or other factors) or if it can really affect the DY, is still under discussion. Faecal calprotectin has been used in SBCE studies in two settings: in patients taking non-steroidal anti-inflammatory drugs, to evaluate the type and extent of mucosal damage and, more importantly from a clinical point of view, in patients with known or suspected Crohn's disease for assessment of inflam-mation activity. Although there is still a lot of debate around the exact reasons of SBCE poor performance in various small-bowel segments, it is worth to remember that the capsule progress is non-steerable, hence more rapid in the proximal than in lower segments of the small-bowel. Capsule aspiration, a relatively unexpected complication, has been reported with increasing frequency. This is probably related with the increase in the mean age of patients undergoing CE. CE video review is a time-consuming procedure. Therefore, several attempts have been made to develop technical software features, in order to make CE video analysis easier and shorter (without jeopardizing its accuracy). Suspected Blood Indicator, QuickView and Fujinon Intelligent Chromo Endoscopy are some of the software tools that have been checked in various clinical studies to date. | Anastasios Koulaouzidis Emanuele Rondonotti Alexandros Karargyris | 2013 | World Journal of Gastroenterology2013,19,24: | 14 |
| 4 | Red blood cell distribution width in elderly hospitalized patients with cardiovascular disease显示文摘BACKGROUND Red blood cell distribution width(RDW)is elevated in patients with cardiovascular disease(CVD).AIM To determine RDW values and impact of CV and non-CV coexisting morbidities in elderly patients hospitalized with chronic CVD.METHODS This prospective study included 204 consecutive elderly patients(age 77.5[7.41]years,female 94[46%],left ventricular ejection fraction 53.00%[37.50,55.00])hospitalized with chronic CVD at the Cardiology Department of Larissa University General Hospital(Larissa,Greece)from January 2019 to April 2019.Elderly patients were selected due to the high prevalence of coexisting morbidities in this patient population.Hospitalized patients with acute CVD(acute coronary syndromes,new-onset heart failure[HF],and acute pericarditis/myocarditis),primary isolated valvular heart disease,sepsis,and those with a history of blood transfusions or cancer were excluded.The evaluation of the patients within 24 h from admission included clinical examination,laboratory blood tests,and echocardiography.RESULTS The most common cardiac morbidities were hypertension and coronary artery disease,with acutely decompensated chronic heart failure(ADCHF)and atrial fibrillation(AF)also frequently being present.The most common non-cardiac morbidities were anemia and chronic kidney disease followed by diabetes mellitus,chronic obstructive pulmonary disease,and sleep apnea.RDW was significantly elevated 15.48(2.15);121(59.3%)of patients had RDW>14.5%which represents the upper limit of normal in our institution.Factors associated with RDW in stepwise regression analysis were ADCHF(coefficient:1.406;95%confidence interval[CI]:0.830-1.981;P<0.001),AF(1.192;0.673 to 1.711;P<0.001),and anemia(0.806;0.256 to 1.355;P=0.004).ADCHF was the most significant factor associated with RDW.RDW was on average 1.41 higher for patients with than without ADCHF,1.19 higher for patients with than without AF,and 0.81 higher for patients with than without anemia.When patients were grouped based on the presence or absence of anemia,ADCHF and AF,heart rate was not increased in those with anemia but was significantly increased in those with ADCHF or AF.CONCLUSION RDW was elevated in elderly hospitalized patients with chronic CVD.Factors associated with RDW were anemia and CV factors associated with elevated heart rate(ADCHF,AF),suggesting sympathetic overactivity. | Andrew Xanthopoulos Konstantinos Tryposkiadis Apostolos Dimos Angeliki Bourazana Alexandros Zagouras Nikolaos Iakovis Michail Papamichalis Grigorios Giamouzis George Vassilopoulos John Skoularigis Filippos Triposkiadis | 2021 | World Journal of Cardiology2021,13,9: | 13 |
| 5 | Heart failure with preserved ejection fraction in the elderly: pathophysiology, diagnostic and therapeutic approach显示文摘Heart failure with preserved ejection fraction(HFpEF)is a clinical syndrome characterized by symptoms and sings of heart failure with elevated left ventricular filling pressures at rest or during exercise.It is the most common type of heart failure in the elderly and its prevalence increases with age and is higher in females at any given age.HFpEF is frequently accompanied of comorbid conditions such as diabetes mellitus,obesity,atrial fibrillation and renal dysfunction.The diagnosis relies in the integration of clinical information,laboratory data and interpretation of cardiac imaging and hemodynamic findings at rest and during exercise.Conditions that have a specific treatment such as coronary artery disease,valvular disease,cardiac amyloidosis and constrictive pericarditis should be considered and evaluated as appropriate.Aggressive management of comorbidities,optimization of blood pressure control and volume status using diuretics as needed are among the current treatment recommendations.There are no specific therapies that have shown to decrease mortality in HFpEF.In symptomatic patients with history of hospital admission for decompensated heart failure,the implantation of a wireless pulmonary artery pressure monitor should be considered.Finally,given the high mortality of this condition,goals of care discussion should be initiated early and involvement of palliative care medicine should be considered. | Ernesto Ruiz Duque Alexandros Briasoulis Paulino A Alvarez | 2019 | Journal of Geriatric Cardiology2019,16,5: | 13 |
| 6 | Inflammatory bowel diseases and spondyloarthropathies: From pathogenesis to treatment显示文摘Spondyloarthropathies(SpA) include many different forms of inflammatory arthritis and can affect the spine(axial SpA) and/or peripheral joints(peripheral SpA) with Ankylosing spondylitis(AS) being the prototype of the former. Extraarticular manifestations, like uveitis, psoriasis and inflammatory bowel disease(IBD) are frequently observed in the setting of SpA and are, in fact, part of the SpA classification criteria. Bowel involvement seems to be the most common of these manifestations. Clinically evident IBD is observed in 6%-14% of AS patients, which is significantly more frequent compared to the general population. Besides, it seems that silent microscopic gut inflammation, is evident in around 60% in AS patients. Interestingly, occurrence of IBD has been associated with AS disease activity. For peripheral SpA, two different forms have been proposed with diverse characteristics. Of note, SpA(axial or peripheral) is more commonly observed in Crohn's disease than in ulcerative colitis. The common pathogenetic mechanisms that explain the link between IBD and SpA are still ill-defined. The role of dysregulated microbiome along with migration of T lymphocytes and other cells from gut to the joint('gut-joint' axis) has been recognized, in the context of a genetic background including associations with alleles inside or outside the human leukocyte antigen system. Various therapeutic modalities are available with monoclonal antibodies against tumour necrosis factor, interleukin-23 and interleukin-17, being the most effective. Both gastroenterologists and rheumatologists should be alert to identify the coexistence of these conditions and ideally follow-up these patients in combined clinics. | George E Fragoulis Christina Liava Dimitrios Daoussis Euangelos Akriviadis Alexandros Garyfallos Theodoros Dimitroulas | 2019 | World Journal of Gastroenterology2019,25,18: | 13 |
| 7 | Double versus single homologous intrauterine insemination for male factor infertility: a systematic review and meta-analysis显示文摘男因素不孕影响 30 % -50%世界范围的不肥沃的夫妇,并且对这些病人的最佳的管理有增加的利息。在比较双、单个的子宫内的授精(IUI ) 的研究,向更高的怀孕的一个趋势评价在结合男因素不孕被观察。因此,我们开始执行元分析与男搭挡的精子检验双对单个的 IUI 的优势在结合男因素不孕。机会比率(或) 95 %信心间隔(CI ) 为怀孕率被计算。结果被根据结果的异质使用 Mantel-Haesel 或 DerSimonian 地主模型分析。总的来说,包含 1125 个 IUI 周期的五试用在元分析被包括。与有单个 IUI 的一个周期相比在有双 IUI 的一个周期以后的怀孕有双重的增加(或:2.0;95 %CI:1.07-3.75;P< 0.03 ) 。不过,这结果主要被归因于大试用的存在那象几乎 50 % 加权;在全面分析。敏感分析,排除这大试用,在两倍 IUI 周期之中向更高的怀孕率揭示了仅仅一个趋势(或:1.58;95 %CI:0.59-4.21 ) ,但是没有统计意义(P=0.20 ) 。我们系统的评论热点关于两倍 IUI 在的使用的可得到的证据结合男因素不孕碎片、弱。尽管可以向更高的怀孕率有一个趋势,当 IUI 的数字每周期被增加时,进一步大、设计得好的使随机化的审判被需要提供稳固的证据指导当前的临床的实践。 | Apostolos Zavos Alexandros Daoonte Antonios Garas Christina Verykouki Evangelos Papanikolao~ Georgios Anifandis Nikolaos P Polyzos | 2013 | Asian Journal of Andrology2013,15,4: | 9 |
| 8 | Oxidized phospholipids and lipoprotein-associated phospholipase A_2 as important determinants of Lp(a) functionality and pathophysiological role显示文摘Lipoprotein(a) [Lp(a)] is composed of a low density lipoprotein(LDL)-like particle to which apolipoprotein(a)[apo(a)] is linked by a single disulfide bridge. Lp(a) is considered a causal risk factor for ischemic cardiovascular disease(CVD) and calcific aortic valve stenosis(CAVS). The evidence for a causal role of Lp(a) in CVD and CAVS is based on data from large epidemiological databases, mendelian randomization studies, and genome-wide association studies. Despite the well-established role of Lp(a) as a causal risk factor for CVD and CAVS, the underlying mechanisms are not well understood. A key role in the Lp(a) functionality may be played by its oxidized phospholipids(OxPL) content. Importantly, most of circulating OxPL are associated with Lp(a); however, the underlying mechanisms leading to this preferential sequestration of OxPL on Lp(a) over the other lipoproteins,are mostly unknown. Several studies support the hypothesis that the risk of Lp(a) is primarily driven by its OxPL content.An important role in Lp(a) functionality may be played by the lipoprotein-associated phospholipase A_2(Lp-PLA_2),an enzyme that catalyzes the degradation of OxPL and is bound to plasma lipoproteins including Lp(a). The present review article discusses new data on the pathophysiological role of Lp(a) and particularly focuses on the functional role of OxPL and Lp-PLA_2 associated with Lp(a). | Alexandros D.Tselepis | 2018 | The Journal of Biomedical Research2018,32,1: | 8 |
| 9 | Wireless endoscopy in 2020:Will it still be a capsule?显示文摘Currently,the major problem of all existing commercial capsule devices is the lack of control of movement.In the future,with an interface application,the clinician will be able to stop and direct the device into points of interest for detailed inspection/diagnosis,and therapy delivery.This editorial presents current commerciallyavailable new designs,European projects and delivery capsule and gives an overview of the progress required and progress that will be achieved-according to the opinion of the authors- in the next 5 year leading to 2020. | Anastasios Koulaouzidis Dimitris K Iakovidis Alexandros Karargyris Emanuele Rondonotti | 2015 | World Journal of Gastroenterology2015,21,17: | 8 |
| 10 | High-resolution microendoscopy for esophageal cancer screening in China: A cost-effectiveness analysis显示文摘AIM:To study the cost-effectiveness of high-resolution microendoscopy(HRME)in an esophageal squamous cell carcinoma(ESCC)screening program in China.METHODS:A decision analytic Markov model of ESCC was developed.Separate model analyses were conducted for cohorts consisting of an averagerisk population or a high-risk population in China.Hypothetical 50-year-old individuals were followed until age 80 or death.We compared three different strategies for both cohorts:(1)no screening;(2)standard endoscopic screening with Lugol’s iodine staining;and(3)endoscopic screening with Lugol’s iodine staining and an HRME.Model parameters were estimated from the literature as well as from GLOBOCAN,the Cancer Incidence and Mortality Worldwide cancer database.Health states in the model included non-neoplasia,mild dysplasia,moderate dysplasia,high-grade dysplasia,intramucosal carcinoma,operable cancer,inoperable cancer,and death.Separate ESCC incidence transition rates were generated for the average-risk and high-risk populations.Costs in Chinese currency were converted to international dollars(I$)and were adjusted to 2012dollars using the Consumer Price Index.RESULTS:The main outcome measurements for this study were quality-adjusted life years(QALYs)and incremental cost-effectiveness ratio(ICER).For the average-risk population,the HRME screening strategy produced 0.043 more QALYs than the no screening strategy at an additional cost of I$646,resulting in an ICER of I$11808 per QALY gained.Standard endoscopic screening was weakly dominated.Among the high-risk population,when the HRME screening strategy was compared with the standard screening strategy,the ICER was I$8173 per QALY.For both the high-risk and average-risk screening populations,the HRME screening strategy appeared to be the most cost-effective strategy,producing ICERs below the willingness-topay threshold,I$23500 per QALY.One-way sensitivity analysis showed that,for the average-risk population,higher specificity of Lugol’s iodine(>40%)and lower specificity of HRME(<70%)could make Lugol’s iodine screening cost-effective.For the high-risk population,the results of the model were not substantially affected by varying the follow-up rate after Lugol’s iodine screening,Lugol’s iodine test characteristics(sensitivity and specificity),or HRME specificity.CONCLUSION:The incorporation of HRME into an ESCC screening program could be cost-effective in China.Larger studies of HRME performance are needed to confirm these findings. | Chin Hur Sung Eun Choi Chung Yin Kong Gui-Qi Wang Hong Xu Alexandros D Polydorides Li-Yan Xue Katherine E Perzan Angela C Tramontano Rebecca R Richards-Kortum Sharmila Anandasabapathy | 2015 | World Journal of Gastroenterology2015,21,18: | 8 |
| 11 | Parametric optimisation of two Pelton turbine runner designs using CFD显示文摘This paper aims to develop a generic optimisation method for Pelton turbine runners using computational fluid dynamics(CFD). Two different initial runners are optimised to achieve more generic results. A simple bucket geometry based on existing bibliography is parameterised and initially optimised using fast Lagrangian solver(FLS). It is then further optimised with a more accurate method using ANSYS Fluent. The second geometry is a current commercial geometry with good initial performance and is optimised using ANSYS CFX. The analytical results provided by CFX and Fluent simulations are used to analyse the characteristics of the flow for different runner geometries. | IDONIS Audrius PANAGIOTOPOULOS Alexandros AGGIDIS George A. ANAGNOSTOPOULOS John S. PAPANTONIS Dimitris E. | 2015 | Journal of Hydrodynamics2015,27,3: | 6 |
| 12 | Hepatitis B virus reactivation in hepatitis B virus surface antigen negative patients receiving immunosuppression: A hidden threat显示文摘AIM: To present the characteristics and the course of a series of anti- hepatitis B virus core antibody (HBc) antibody positive patients, who experienced hepatitis B virus (HBV) reactivation after immunosuppression. METHODS: We retrospectively evaluated in our tertiary centers the medical records of hepatitis B virus surface antigen (HBsAg) negative patients who suffered from HBV reactivation after chemotherapy or immunosuppression during a 3-year period (2009-2011). Accordingly, the clinical, laboratory and virological characteristics of 10 anti-HBc (+) anti-HBs (-)/HBsAg (-) and 4 anti-HBc (+)/antiHBs (+)/HBsAg (-) patients, who developed HBV reactivation after the initiation of chemotherapy or immunosuppressive treatment were analyzed. Quantitative determination of HBV DNA during reactivation was performed in all cases by a quantitative real time polymerase chain reaction kit (COBAS Taqman HBV Test; cut-off of detection: 6 IU/mL). RESULTS: Twelve out of 14 patients were males; median age 74.5 years. In 71.4% of them the primary diagnosis was hematologic malignancy; 78.6% had received rituximab (R) as part of the immunosuppressive regimen. The median time from last chemotherapy schedule till HBV reactivation for 10 out of 11 patients who received R was 3 (range 2-17) mo. Three patients (21.4%) deteriorated, manifesting ascites and hepatic encephalopathy and 2 (14.3%) of them died due to liver failure. CONCLUSION: HBsAg-negative anti-HBc antibody positive patients can develop HBV reactivation even 2 years after stopping immunosuppression, whereas prompt antiviral treatment on diagnosis of reactivation can be lifesaving. | Kalliopi Zachou Alexandros Sarantopoulos Nikolaos K Gatselis Themistoklis Vassiliadis Stella Gabeta Aggelos Stefos Asterios Saitis Panagiota Boura George N Dalekos | 2013 | World Journal of Hepatology2013,5,7: | 6 |
| 13 | On the Misunderstanding of the Ziegler-Nichols's Formulae Usage显示文摘In the Ziegler-Nichols' s method of reaction curve,the proportional gain should be calculated as an inverse relation of the plant steady-state gain. One of the reasons behind this is to avoid an excessively high loop gain, which can jeopardize many required characteristics of the closed loop. However, many reports, scientific papers and books have been neglecting such gain compensation in the tuning formulae.This brief presents a comprehensive discussion about such uncompensated tuning rules. The main paper finding is that either the stability margin or the disturbance rejection is reduced in this case. A theoretical analysis is performed to obtain the main result. Moreover, a consistent simulation study is also performed to show the impact of the lack of compensation on performance. | Alexandro Garro Brito | 2019 | IEEE/CAA Journal of Automatica Sinica2019,6,1: | 5 |
| 14 | Cytokines as biomarkers of inflammatory response after open versus endovascular repair of abdominal aortic aneurysms: a systematic review显示文摘一个腹的大动脉的动脉瘤(AAA ) 的修理是与有煽动性的串联的随后的激活的神经质、新陈代谢的压力相关的反应有关的一个高风险的外科的过程。与开的修理相对照(或) , endovascular 大动脉的动脉瘤修理(EVAR ) 由为更少提供广泛的切口,解剖,和织物操作似乎是手术后的压力到减少。然而,这些有益的效果可以是由代谢物在用在 endovascular 的导管的血栓的 intra 钠操作期间修理的 cytokines 和 arachidonic 酸的版本的偏移量,导致全身的煽动性的反应(先生) ,它是临床上叫的培植以后的症候群。在我们比较了的这系统的评论或与 EVAR,以 post-interventional,从改变导致传播 cytokine 的煽动性的反应铺平。我们寻求了在 EVAR 以后关于培植以后的症候群总结所有最近的证据。我们寻找了为临床的研究作为煽动性的反应的部分在 cytokines 的版本上报导在以后的 Medline (PubMed ) , ClinicalTrials.gov 和 Cochrane 图书馆开 / 常规并且 AAA 的 endovascular 修理。我们鉴别 17 学习检验 cytokine 层次在以后或对 EVAR。或似乎特别地比 EVAR 与一位更大的先生被联系,由增加的 cytokine 层次证实了 IL-6 和 IL-8 而 IL-1, IL-10 和 TNF- 出现了,冲突在二之间的结果或没有差别组织。聚酯 endografts 看起来断然在 EVAR 以后与培植以后的症候群的发生被相关。未来大未来的研究被保证位于在 surgical 以后的 cytokine 相互作用下面描出的机制煽动性的反应背景。 | Diamantis I TSILIMIGRAS Fragiska SIGALA Georgios KARAOLANIS Ioannis NTANASIS-STATHOPOULOS Eleftherios SPARTALIS Michael SPARTALIS Nikolaos PATELIS Alexandros PAPALAMPROS Chandler LONG Demetrios MORIS | 2018 | Acta Pharmacologica Sinica2018,39,7: | 5 |
| 15 | Nickel and nickel-phosphorous matrix composite electrocoatings显示文摘Nickel and nickel-phosphorous matrix composite coatings reinforced by TiO2,SiC and WC particles were produced under direct and pulse current conditions from an additive-free Watts' type bath.The influence of the variable electrolysis parameters(type of current,frequency of current pulses and current density) and the reinforcing particles properties(type,size and concentration in the bath) on the surface morphology and the structure of the deposits was examined.It is demonstrated that the embedding of ceramic particles modifies in various ways the nickel electrocrystallisation process.On the other hand,Ni-P amorphous matrix is not affected by the occlusion of the particles.Overall,the imposition of pulse current conditions leads to composite coatings with increased embedded percentage and more homogenous distribution of particles in the matrix than coatings produced under direct current regime. | Nicolas SPYRELLIS Evangelia A.PAVLATOU Styliani SPANOU Alexandros ZOIKIS-KARATHANASIS | 2009 | 中国有色金属学会会刊:英文版2009,19,4: | 5 |
| 16 | Capsule-odometer: A concept to improve accurate lesion localisation显示文摘In order to improve lesion localisation in small-bowel capsule endoscopy,a modified capsule design has been proposed incorporating localisation and-in theorystabilization capabilities.The proposed design consists of a capsule fitted with protruding wheels attached to a spring-mechanism.This would act as a miniature odometer,leading to more accurate lesion localization information in relation to the onset of the investigation(spring expansion e.g.,pyloric opening).Furthermore,this capsule could allow stabilization of the recorded video as any erratic,non-forward movement through the gut is minimised.Three-dimensional(3-D)printing technology was used to build a capsule prototype.Thereafter,miniature wheels were also 3-D printed and mounted on a spring which was attached to conventional capsule endoscopes for the purpose of this proof-of-concept experiment.In vitro and ex vivo experiments with porcine small-bowel are presented herein.Further experiments have been scheduled. | Alexandros Karargyris Anastasios Koulaouzidis | 2013 | World Journal of Gastroenterology2013,19,35: | 5 |
| 17 | Double Nicking by RNA-Guided CRISPR Cas9 for Enhanced Genome Editing Specificity显示文摘 | F. Ann Ran Patrick D. Hsu Chie-Yu Lin Jonathan S. Gootenberg Silvana Konermann Alexandro E. Trevino David A. Scott Azusa Inoue Shogo Matoba Yi Zhang Feng Zhang | 2013 | Cell2013,,2: | 4 |
| 18 | Management and control applications in Agriculture domain via a Future Internet Businessto- Business platform显示文摘The Agriculture business domain,as a vital part of the overall supply chain,is expected to highly evolve in the upcoming years via the developments,which are taking place on the side of the Future Internet.This paper presents a novel Business-to-Business collaboration platform from the agri-food sector perspective,which aims to facilitate the collaboration of numerous stakeholders belonging to associated business domains,in an effective and flexible manner.The contemporary B2B collaboration schemes already place the requirements for swift deployment of cloud applications,capable of both integrating diverse legacy systems,as well as developing in a rapid way new services and systems,which will be able to instantly communicate and provide complete,'farm-to-fork'solutions for farmers,agrifood and logistics service providers,ICT companies,end-product producers,etc.To this end,this conceptual paper describes how these requirements are addressed via the FIspace B2B platform,focusing on the Greenhouse Management&Control scenarios. | Sokratis Barmpounakis Alexandros Kaloxylos Aggelos Groumas Lampros Katsikas Vasileios Sarris Konstantina Dimtsa Fabiana Fournier Eleni Antoniou Nancy Alonistioti Sjaak Wolfert | 2015 | Information Processing in Agriculture2015,2,1: | 4 |
| 19 | Molecular aspects of carcinogenesis in pancreatic cancer显示文摘BACKGROUND:Pancreatic cancer(PCa)is one of the most aggressive human solid tumors,with rapid growth and metastatic spread as well as resistance to chemotherapeutic drugs,leading rapidly to virtually incurable disease.Over the last 20 years,however,significant advances have been made in our understanding of the molecular biology of PCa,with a focus on the cytogenetic abnormalities in PCa cell growth and differentiation. DATA SOURCES:A MEDLINE search and manual cross- referencing were utilized to identify published data for PCa molecular biology studies between 1986 and 2008, with emphasis on genetic alterations and developmental oncology. RESULTS:Activation of oncogenes,deregulation of tumor suppressor and genome maintenance genes,upregulation of growth factors/growth factor receptor signaling cascade systems,and alterations in cytokine expression,have been reported to play important roles in the process of pancreatic carcinogenesis.Alterations in the K-ras proto- oncogene and the p16INK4a,p53,FHIT,and DPC4 tumor suppressor genes occur in a high percentage of tumors. Furthermore,a variety of growth factors are expressed at increased levels.In addition,PCa often exhibits alterations in growth inhibitory pathways and evades apoptosis through p53 mutations and aberrant expression of apoptosis-regulating genes,such as members of the Bcl family.Additional pathways in the development of an aggressive phenotype,local infiltration and metastasis are still under ongoing genetic research.The present paper reviews recent studies on the pathogenesis of PCa,and includes a brief reference to alterations reported for other types of pancreatic tumor. CONCLUSIONS:Advances in molecular genetics and biology have improved our perception of the pathogenesis of PCa.However,further studies are needed to better understand the fundamental changes that occur in PCa,thus leading to better diagnostic and therapeutic management. | Alexandros Koliopanos Constantinos Avgerinos Constantina Paraskeva Zisis Touloumis Dionisisa Kelgiorgi Christos Dervenis | 2008 | Hepatobiliary & Pancreatic Diseases International2008,7,4: | 4 |
| 20 | Melatonin attenuates high fat diet-induced fatty liver disease in rats显示文摘AIM:To investigate melatonin's preventive action in oxidative stress in a rat model with high fat diet-induced non-alcoholic fatty liver disease(NAFLD).METHODS:NAFLD was induced by high fat diet(HFD)in adult,male,Wistar rats,weighing 180-230 g.After acclimatization for one week,they were randomly assigned to 6 experimental groups that comprised animals on regular diet plus 5 or 10 mg/kg melatonin,for 4 or 8 wk;animals on HFD,with or without 5 or 10 mg/kg melatonin,for 4 or 8 wk;and animals on HFD for 8 or 12 wk,with melatonin 10 mg/kg for the last 4 wk.Liver damage was assessed biochemically by the serum levels of alanine aminotransferase(ALT),aspartate aminotransferase(AST),and histologically.Lipid peroxidation and oxidative stress were assessed by malondialdehyde and glutathione levels in liver tissue.Lipidemic indices and portal vein pressure were also measured.RESULTS:Compared to rats not receiving melatonin,rats on 5 or 10 mg/kg of melatonin had lower mean liver weight(-5.0 g and-4.9 g)(P < 0.001)and lower liver weight to body weight ratio(-1.0%)(P < 0.001),for the two doses,respectively.All rats fed HFD without melatonin developed severe,grade Ⅲ,steatosis.Rats on HFD with concurrent use of melatonin showed significantly less steatosis,with grade Ⅲ steatosis observed in 1 of 29(3.4%)rats on 10 mg/kg melatonin and in 3 of 27(11.1%)rats on 5 mg/kg melatonin.Melatonin was ineffective in reversing established steatosis.Melatonin also had no effect on any of the common lipidemic serum markers,the levels of which did not differ significantly among the rats on HFD,irrespective of the use or not of melatonin.Liver cell necrosis was significantly less in rats on HFD receiving melatonin than in those not on melatonin,with the AST levels declining by a mean of 170 U/L(P = 0.01)and 224 U/L(P = 0.001),and the ALT levels declining by a mean of 62.9 U/L(P = 0.01)and 93.4 U/L(P < 0.001),for the 5 and 10 mg/kg melatonin dose,respectively.Melatonin mitigated liver damage due to peroxidation and oxidative stress in liver tissue as indicated by a significant decline in MDA production by 12.7(P < 0.001)and 12.2(P < 0.001)μmol/L/mg protein/mg tissue,and a significant increase in glutathione by 20.1(P = 0.004)and 29.2(P < 0.001)μmol/L/mg protein/mg tissue,for the 5 and 10 mg/kg melatonin dose,respectively.CONCLUSION:Melatonin can attenuate oxidative stress,lessen liver damage,and improve liver histology in rats with high fat diet-induced NAFLD,when given concurrently with the diet. | Gregorios Hatzis Panayiotis Ziakas Nikolaos Kavantzas Aggeliki Triantafyllou Panagiotis Sigalas Ioanna Andreadou Konstantinos Ioannidis Stamatios Chatzis Konstantinos Filis Alexandros Papalampros Fragiska Sigala | 2013 | World Journal of Hepatology2013,5,4: | 4 |