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| 1 | Tight junctions in inflammatory bowel diseases and inflammatory bowel disease associated colorectal cancer显示文摘Inflammatory bowel diseases are characterised by inflammation that compromises the integrity of the epithelial barrier. The intestinal epithelium is not only a static barrier but has evolved complex mechanisms to control and regulate bacterial interactions with the mucosal surface. Apical tight junction proteins are critical in the maintenance of epithelial barrier function and control of paracellular permeability. The characterisation of alterations in tight junction proteins as key players in epithelial barrier function in inflammatory bowel diseases is rapidly enhancing our understanding of critical mechanisms in disease pathogenesis as well as novel therapeutic opportunities. Here we give an overview of recent literature focusing on the role of tight junction proteins, in particular claudins, in inflammatory bowel diseases and inflammatory bowel disease associated colorectal cancer. | Jonathan Landy Emma Ronde Nick English Sue K Clark Ailsa L Hart Stella C Knight Paul J Ciclitira Hafid Omar Al-Hassi | 2016 | World Journal of Gastroenterology2016,22,11: | 39 |
| 2 | Early postoperative feeding in resectional gastrointestinal surgical cancer patients显示文摘Malnutrition is present in the majority of patients presenting for surgical management of gastrointestinal malignancies,due to the effects of the tumour and preoperative anti-neoplastic treatments.The traditional practice of fasting patients until the resumption of bowel function threatens to further contribute to the malnutrition experienced by these patients.Furthermore,the rationale behind this traditional practice has been rendered obsolete through developments in anaesthetic agents and changes to postoperative analgesia practices.Conversely,there is a growing body of literature that consistently demonstrates that providing oral or tube feeding proximal to the anastomosis within 24 h postoperatively,is not only safe,but might be associated with significant benefits to the postoperative course.Early post operative feeding should therefore be adopted as a standard of care in oncology patients undergoing gastrointestinal resections. | Emma J Osland Muhammed Ashraf Memon | 2010 | World Journal of Gastrointestinal Oncology2010,2,4: | 22 |
| 3 | Indirect traumatic optic neuropathy:modeling optic nerve injury in the context of closed head trauma显示文摘Traumatic optic neuropathy:Traumatic brain injury is one of the leading causes of disability and mortality in the United States.It impacts people of all ages and demographics,particularly younger males and members of the military.Vision loss is commonly associated with traumatic brain injuries of all severities and can leave patients permanently disabled.This vision loss can be caused by injury to the visual system at multiple levels,including the eyes,optic nerves,and many different sites in the brain and brainstem(Sen,2017).Despite the far-reaching effects of visual impairment after traumatic brain injury,its incidence after traumatic brain injury is not well measured,and few successful treatments have been identified or implemented. | Emma G.Burke Shelby M.Cansler Nathan K.Evanson | 2019 | Neural Regeneration Research2019,14,4: | 14 |
| 4 | 美国早期特殊教育师资培养体系反思及启示显示文摘早期特殊教育不仅在促进每个障碍儿童的发展和提高其家庭生活质量方面起着至关重要的作用,而且有着巨大的社会效益和经济效益,是和谐社会的重要组成部分。美国法律规定0-21岁的所有障碍儿童有权获得免费和适当的教育,由具有专业化水平的相关人员为这些儿童提供服务和支持。本文从政策层面到实践层面对美国的早期特殊教育师资培养体系进行了系统、全面地分析,了解其现状和存在的挑战,以及未来发展的趋势,以期为促进我国早期特殊教育师资培养体系的发展提供一些理论和实践上的参考。 | 苏雪云 Toby Long Lorelei Emma Marian Jarrett | 2010 | 中国特殊教育2010,,5: | 13 |
| 5 | 用SSR和AFLP技术分析花生抗青枯病种质遗传多样性的比较(英文)显示文摘由Ralstonia solanacearum E.F.Smith引起的青枯病是若干亚洲和非洲国家花生生产的重要限制因子,利用抗病品种是防治这一病害最好的措施。虽然一大批抗青枯病花生种质资源材料已被鉴定出来,但对其遗传多样性没有足够的研究,限制了在育种中的有效利用。本研究以31份对青枯病具有不同抗性的栽培种花生种质为材料,通过简单序列重复(SSR)和扩增片段长度多态性(AFLP)技术分析了它们的遗传多样性。通过78对SSR引物和126对AFLP引物的鉴定,筛选出能显示抗青枯病种质多态性的SSR引物29对和AFLP引物32对。所选用的29对多态性SSR引物共扩增91条多态性带,平均每对引物扩增3.14条多态性带;32对多态性AFLP引物共扩增72条多态性带,平均扩增2.25条多态性带。在所筛选引物中,4对SSR引物(14H06,7G02,3A8,16C6)和1对AFLP引物(P1M62)检测花生多态性的效果优于其他引物。SSR分析获得的31个花生种质的遗传距离为0.12-0.94,平均为0.53,而AFLP分析获得的遗传距离为0.06~0.57,平均为0.25,基于SSR分析的遗传距离大于基于AFLP分析的遗传距离,疏枝亚种组的遗传分化相对大于密枝亚种组。基于两种分析方法所获得的聚类结果基本一致,但SSR数据聚类结果与栽培种花生的形态分类系统更为吻合。根据分析结果,对构建青枯病抗性遗传图谱群体的核心亲本和抗性育种策略提出了建议。 | 姜慧芳 廖伯寿 任小平 雷永 Emma Mace 傅廷栋 J.H.Crouch | 2007 | Journal of Genetics and Genomics2007,34,6: | 12 |
| 6 | Exploring and Exploiting Pan-genomics for Crop Improvement显示文摘Genetic variation ranging from single-nucleotide polymorphisms to large structural variants (SVs) can cause variation of gene content among individuals within the same species. There is an increasing appreciation that a single reference genome is insufficient to capture the full landscape of genetic diversity of a species. Pan-genome analysis offers a platform to evaluate the genetic diversity of a species via investigation of its entire genome repertoire. Although a recent wave of pan-genomic studies has shed new light on crop diversity and improvement using advanced sequencing technology, the potential applications of crop pan-genomics in crop improvement are yet to be fully exploited. In this review, we highlight the progress achieved in understanding crop pan?genomics, discuss biological activities that cause SVs, review important agronomical traits affected by SVs, and present our perspective on the application of pan-genomics in crop improvement. | Yongfu Tao Xianrong Zhao Emma Mace Robert Henry David Jordan | 2019 | Molecular Plant2019,12,2: | 10 |
| 7 | Effects of major ozonated autohemotherapy in the treatment of dry age related macular degeneration: a randomized controlled clinical study显示文摘AIM: To evaluate the effect of systemic ozonated major autohaemotherapy (O3-AHT) in patients affected by dry age related macular degeneration (AMD). METHODS: This study was a randomized, controlled clinical study. One hundred and forty patients with the diagnosis of AMD in both eyes, with the study eye presenting dry AMD and soft drusen, were randomly assigned in a 1:1 ratio to either receive 27 major ozonated autohemotherapy treatments during 12-month period, or a standardized multi-vitamin therapy. Primary outcome was the change in best corrected visual acuity (mean logMar change) between the baseline and 6 and 12 months, end point of the study. In addition, to investigate the safety of prolonged ozonated autohaemotherapy, we measured the routine haemato- chemical parameters and biochemical oxidative stress values at baseline and after 12 months treatment time. RESULTS: The mean baseline best corrected visual acuity in study eyes was 0.36 in the treatment group and 0.38 in the control group (difference not statistically significant). At the primary endpoint, 6 months post-baseline, the mean logMAR change in the treated group improved by 0.1 and the values of the control group at the same time impaired by 0.2 respect to the baseline. Four percent and twenty-five percent of eyes in the group treated with O3-AHT gained 1 or more lines after 6 and 12 months respectively compared to 0% in the eyes which received no treatment (P <0.05 at 12 months). None of the treated patients experienced a loss in visual acuity in their study eye at 6 and 12 months, compared to 16% and 40 % of patients in the control group who lost 2 lines or more at 6 months and 12 months respectively (P <0.05 treated vs control group)). Major ozonated autohemotherapy was shown to be safe and well- tolerated by the patients. Moreover, the haematochemical parameters showed a decrease in the Reactive Oxygen Metabolites (300±10.1 UCARR at 12 months compared to a baseline value of 380±10.4 UCARR, P <0.05) and an increase in Biological Antioxidant Potential plasma values (2100±34.8 micromoles/ C vitamin after 12 months compared to the baseline value of 1610±36.2, P <0.05) in the treated patients when compared to the control group. This data suggests that major ozonated autohaemotherapy may exert a role in reducing oxidative stress by endogenously stimulating the production of antioxidant molecules. CONCLUSION: The results of this study suggests that major ozonated autohaemotherapy could be a safe and effective therapeutic option for high-risk patients with dry AMD, and that a series of such treatments could improve the natural course of AMD. | Emma Borrelli Angelica Diadori Alessandro Zalaffi Velio Bocci | 2012 | International Journal of Ophthalmology(English edition)2012,5,6: | 10 |
| 8 | Computed tomography scans of paranasal sinuses before functional endoscopic sinus surgery显示文摘This review aims to familiarize the radiologist with the common types of sinus surgery including their indications and techniques.We also illustrate how surgeons interpret 3D sinus anatomy when evaluating computed tomography(CT)studies.Preoperative evaluation by CT is mandatory for all patients undergoing functional endoscopic sinus surgery(FESS).In the past decade in particular,CT of the paranasal sinuses has become a roadmap for FESS.The radiologist's goal is to report on five key points:the extent of sinus opacification,opacification of sinus drainage pathways,anatomical variants,critical variants,and condition of surrounding soft tissues of the neck,brain and orbits.We present a systematic approach to the use of coronal,axial,and sagittal images in CT evaluation before FESS. | Emma C Cashman Peter J MacMahon David Smyth | 2011 | World Journal of Radiology2011,3,8: | 10 |
| 9 | 白蛋白刺激肾小管上皮细胞表达基质金属蛋白酶2和9显示文摘目的探讨白蛋白对近端肾小管上皮细胞表达基质金属蛋白酶2(MMP-2)和MMP-9的影响。方法大鼠近端肾小管细胞株NRK52E培养至70%或100%融合时,分别给予不同浓度(0.1~1.0g/L)去脂和非去脂牛血清白蛋白(dBSA和BSA)刺激,于24、48、72h收集培养液,用明胶酶谱和Western印迹方法检测培养液MMP-2和MMP-9活性和蛋白水平。结果与空白对照组比较,1.0g/LBSA刺激未完全融合NRK52E72h后,MMP-2和MMP-9活性分别上调276%、176%(P〈0.05)。与刺激24h比较,1.0g/LBSA刺激72h,在未完全融合NRK52E的MMP-2和MMP-9活性分别上调536%、148%;在完全融合NRK52E分别上调212%、184%(P〈0.05)。与完全融合NRK52E比较,1.0g/LBSA刺激未完全融合NRK52E 72h,MMP-2活性上调增加了274%,MMP-9活性上调减少了45.1%(P〈0.05)。dBSA刺激结果与BSA类似。结论白蛋白刺激呈剂量和时间依赖性上调近端肾小管细胞表达MMP-2和MMP-9。细胞完全融合可抑制MMP-2表达,促进MMP-9表达。 | 孙良忠 Ibrini Juma Parker Emma 陈述枚 Johnson Timothy S. El Nahas A. Meguid | 2007 | 中华肾脏病杂志2007,23,8: | 9 |
| 10 | 中国与非洲近代-现代人类某些颅骨特征的对比及其意义——中国与非洲人类头骨特征对比之二显示文摘对近代 -现代非洲和中国人群 2 6项颅骨特征的观测和分析显示非洲人具有一些显示其特异性的颅骨特征 ,但多数特征的表现与东亚人类非常接近 ,提示现代人群体质特征的趋同性。作者认为非洲人在多数颅骨特征的表现方式上较中国人更为多样化 ,表明现代非洲人群在体质特征的表现上较东亚人类具有更宽广的形态变异谱。作者基于许多东亚。 | 刘武 Emma Mbua 吴秀杰 张银运 | 2003 | 人类学学报2003,22,2: | 9 |
| 11 | Differences in neuroplasticity after spinal cord injury in varying animal models and humans显示文摘Rats have been the primary model to study the process and underlying mechanisms of recovery after spinal cord injury. Two weeks after a severe spinal cord contusion, rats can regain weight-bearing abilities without therapeutic interventions, as assessed by the Basso, Beattie and Bresnahan locomotor scale. However, many human patients suffer from permanent loss of motor function following spinal cord injury. While rats are the most understood animal model, major differences in sensorimotor pathways between quadrupeds and bipeds need to be considered. Understanding the major differences between the sensorimotor pathways of rats, non-human primates, and humans is a start to improving targets for treatments of human spinal cord injury. This review will discuss the neuroplasticity of the brain and spinal cord after spinal cord injury in rats, non-human primates, and humans. A brief overview of emerging interventions to induce plasticity in humans with spinal cord injury will also be discussed. | Mallory E.Filipp Benjamin J.Travis Stefanie S.Henry Emma C.Idzikowski Sarah A.Magnuson Megan YF Loh Daniel J.Hellenbrand Amgad S.Hanna | 2019 | Neural Regeneration Research2019,14,1: | 8 |
| 12 | High-performance size exclusion chromatography with a multi-wavelength absorbance detector study on dissolved organic matter characterisation along a water distribution system显示文摘This study examined the associations between dissolved organic matter(DOM) characteristics and potential nitrification occurrence in the presence of chloramine along a drinking water distribution system. High-performance size exclusion chromatography(HPSEC) coupled with a multiple wavelength detector(200–280 nm) was employed to characterise DOM by molecular weight distribution, bacterial activity was analysed using flow cytometry, and a package of simple analytical tools, such as dissolved organic carbon, absorbance at 254 nm, nitrate,nitrite, ammonia and total disinfectant residual were also applied and their applicability to indicate water quality changes in distribution systems were also evaluated. Results showed that multi-wavelength HPSEC analysis was useful to provide information about DOM character while changes in molecule weight profiles at wavelengths less than 230 nm were also able to be related to other water quality parameters. Correct selection of the UV wavelengths can be an important factor for providing appropriate indicators associated with different DOM compositions. DOM molecular weight in the range of 0.2–0.5 k Da measured at210 nm correlated positively with oxidised nitrogen concentration(r = 0.99), and the concentrations of active bacterial cells in the distribution system(r = 0.85). Our study also showed that the changes of DOM character and bacterial cells were significant in those sampling points that had decreases in total disinfectant residual. HPSEC-UV measured at210 nm and flow cytometry can detect the changes of low molecular weight of DOM and bacterial levels, respectively, when nitrification occurred within the chloraminated distribution system. | Huiping Huang Emma Sawade David Cook Christopher W.K.Chow Mary Drikas Bo Jin | 2016 | Journal of Environmental Sciences2016,28,6: | 7 |
| 13 | 钠-葡萄糖共转运蛋白-2抑制剂或胰高血糖素样肽-1受体激动剂治疗成人2型糖尿病:临床实践指南显示文摘临床问题对于存在不同心血管风险及肾脏结局的2型糖尿病患者,在原有生活方式干预和/或其他降糖药物的基础上加用钠-葡萄糖共转运蛋白2(SGLT-2)抑制剂和胰高血糖素样肽1(GLP-1)受体激动剂的获益及风险是什么?现行做法几十年来,2型糖尿病的治疗决策都以控制血糖为主导。SGLT-2抑制剂和GLP-1受体激动剂在传统观念中常被用于二甲双胍治疗后血糖仍控制不佳的患者。目前这一现状已经发生了改变,这得益于多项临床研究结果。研究显示SGLT-2抑制剂和GLP-1受体激动剂拥有独立于药物降糖作用之外的对于动脉粥样硬化性心血管病(CVD)和慢性肾脏病(CKD)的获益。建议本指南阐述了针对不同风险分层的成人2型糖尿病患者使用SGLT-2抑制剂或GLP-1受体激动剂的建议。•伴有3种或更少的心血管风险因素且不存在CVD或CKD:不建议启动SGLT-2抑制剂或GLP-1受体激动剂治疗。(推荐等级:弱)•伴有3种以上心血管风险因素且不存在CVD或CKD:建议启动SGLT-2抑制剂治疗,不建议启动GLP-1受体激动剂治疗。(推荐等级:弱)•已经存在CVD或CKD:建议启动SGLT-2抑制剂治疗和GLP-1受体激动剂治疗。(推荐等级:弱)•已经存在CVD和CKD:建议启动SGLT-2抑制剂治疗(推荐等级:强)和GLP-1受体激动剂治疗。(推荐等级:弱)•对于那些想要进一步降低CVD和CKD结局风险的患者:推荐优先启用SGLT-2抑制剂治疗而非GLP-1受体激动剂治疗。(推荐等级:弱)这项指南是如何制订的一个由患者、临床医生和方法学家共同组成的国际小组提出了这些推荐意见。这些推荐意见基于可信度较高的指南的标准,并使用GRADE分级方法进行评估。该小组采用了息者个体化的观点。证据一项关于获益与风险的系统综述和网络meta分析(764项随机对照研究,包括421346例参与者)发现SGLT-2抑制剂和GLP-1受体激动剂可以降低总体死亡率、心肌梗死发生率、终末期肾病或肾衰竭的发生率(中等至高等质量的证据)。在不同的亚组中这些药物对卒中、因心力衰竭所致住院和其他主要不良事件有不同的影响。药物绝对获益的程度因患者个体风险的不同有很大的差异。(例如,对于接受了超过5年药物治疗的1000例患者,在最低风险人群中死亡人数减少了5人,在最高风险人群中死亡人数减少了48人)。一项关于预后的综述确认了14种风险预测模型,其中一种(RECODe)在证据总结中报告了大部分基线风险评估数据,小组利用该模型以支持风险分层的建议。考虑到患者的价值观及个体差异,指南推荐的支撑证据包括一项对已发表论文的系统综述、一项患者焦点小组研究、一项临床问题总结,以及一项指南调查。指南解读我们依据不同的CVD和CKD风险水平,综合考虑获益、风险和其他因素的平衡,以及每一个风险组别的实际问题,来对推荐意见进行分层。本指南强烈建议CVD和CKD患者使用SGLT-2抑制剂治疗,这说明专家组认为其具有显著的获益。而对于其他成人2型糖尿病患者,推荐等级较弱,这说明专家组想要在获益、风险及治疗花费上取得一个更好的平衡。临床医生通过该指南可以使用可靠的风险计算模型,如RECODe,来明确其患者的个体心血管和肾脏疾病风险。医患交互式总结临床证据和制订决策有助于患者知晓治疗选择,包括进行共同决策。2型糖尿病人群(全球患病率不断增长1-2)正面临着不断增加的心血管疾病、肾脏病和其他并发症的风险3。数十年来,2型糖尿病的管理始终以控制血糖及糖化血红蛋白(HbA1c)为治疗目标4-5,但是,最近的高质量随机对照研究已经对这种以血糖为中心的治疗模式发起了挑战。研究结果显示,强化血糖控制未必会降低大血管不良事件,它还可能带来不利影响监管机构现在要求新型糖尿病药物必须证明其具有心血管和肾脏获益才能获得批准。对两类新药--钠-葡萄糖共转运蛋白2(SGLT-2)抑制剂和胰高血糖素样肽1(GLP-1)受体激动剂(见框图1)的临床试验结果显示,在现有治疗方案(常规治疗)之上加用这些药物,对死亡、心肌梗死、卒中、心力衰竭和肾脏的结局(如进展为终末期肾病)都有获益8-12。 | Sheyu Li Per Olav Vandvik Lyubov Lytvyn Gordon H Guyatt Suetonia C Palmer Rene Rodriguez-Gutierrez Farid Foroutan Thomas Agoritsas Reed A C Siemieniuk Michael Walsh Lawrie Frere David J Tunnicliffe Evi V Nagler Veena Manja Bjφrn Olav Asvold Vivekanand Jha Mieke Vermandere Karim Gariani Qian Zhao Yan Ren Emma Jane Cartwright Patrick Gee Alan Wickes Linda Fems Robin Wright Ling Li Qiukui Hao Reem A Mustafa 无 郭鹤鸣(译) | 2021 | 英国医学杂志中文版2021,24,9: | 7 |
| 14 | A review on photo-thermal catalytic conversion of carbon dioxide显示文摘The conversion of carbon dioxide into value-added products is of great industrial and environmental interest. However, as carbon dioxide is relatively stable, the input energy required for this conversion is a significant limiting factor in the system's performance. By utilising energy from the sun, through a range of key routes, this limitation can be overcome. In this review, we present a comprehensive and critical overview of the potential routes to harvest the sun's energy, primarily through solar-thermal technologies and plasmonic resonance effects. Focusing on the localised heating approach, this review shortlists and compares viable catalysts for the photo-thermal catalytic conversion of carbon dioxide.Further, the pathways and potential products of different carbon dioxide conversion routes are outlined with the reverse water gas shift,methanation, and methanol synthesis being of key interest. Finally, the challenges in implementing such systems and the outlook to the future are detailed. | Ee Teng Kho Tze Hao Tan Emma Lovell Roong Jien Wong Jason Scott Rose Amal | 2017 | Green Energy & Environment2017,2,3: | 7 |
| 15 | A promising diagnostic method:Terahertz pulsed imaging and spectroscopy显示文摘The terahertz band lies between the microwave and infrared regions of the electromagnetic spectrum.This radiation has very low photon energy and thus it does not pose any ionization hazard for biological tissues.It is strongly attenuated by water and very sensitive to water content.Unique absorption spectra due to intermolecular vibrations in this region have been found in different biological materials.These unique features make tera-hertz imaging very attractive for medical applications in order to provide complimentary information to existing imaging techniques.There has been an increasing interest in terahertz imaging and spectroscopy of biologically related applications within the last few years and more and more terahertz spectra are being reported.This paper introduces terahertz technology and provides a short review of recent advances in terahertz imaging and spectroscopy techniques,and a number of applications such as molecular spectroscopy,tissue characterization and skin imaging are discussed. | Ming Yiu Sy Yi-Xiang J Wang Anil T Ahuja Emma Pickwell-MacPherson | 2011 | World Journal of Radiology2011,3,3: | 7 |
| 16 | SIRT3-mediated inhibition of FOS through histone H3 deacetylation prevents cardiac fibrosis and inflammation显示文摘Sirtuin 3(SIRT3)is a deacetylase that modulates proteins that control metabolism and protects against oxidative stress.Modulation of SIRT3 activity has been proposed as a promising therapeutic target for ameliorating metabolic diseases and associated cardiac disturbances.In this study,we investigated the role of SIRT3 in inflammation and fibrosis in the heart using male mice with constitutive and systemic deletion of SIRT3 and human cardiac AC16 cells.SIRT3 knockout mice showed cardiac fibrosis and inflammation that was characterized by augmented transcriptional activity of AP-1.Consistent with this,SIRT3 overexpression in human and neonatal rat cardiomyocytes partially prevented the inflammatory and profibrotic response induced by TNF-α.Notably,these effects were associated with a decrease in the mRNA and protein levels of FOS and the DNA-binding activity of AP-1.Finally,we demonstrated that SIRT3 inhibits FOS transcription through specific histone H3 lysine K27 deacetylation at its promoter.These findings highlight an important function of SIRT3 in mediating the often intricate profibrotic and proinflammatory responses of cardiac cells through the modulation of the FOS/AP-1 pathway.Since fibrosis and inflammation are crucial in the progression of cardiac hypertrophy,heart failure,and diabetic cardiomyopathy,our results point to SIRT3 as a potential target for treating these diseases. | Xavier Palomer MSilvia Román-Azcona Javier Pizarro-Delgado Ana Planavila Francesc Villarroya Brenda Valenzuela-Alcaraz Fátima Crispi Álvaro Sepúlveda-Martínez Irene Miguel-Escalada Jorge Ferrer JFrancisco Nistal Raquel García Mercy MDavidson Emma Barroso Manuel Vázquez-Carrera | 2020 | Signal Transduction and Targeted Therapy2020,5,1: | 7 |
| 17 | Wireless capsule endoscopy and proximal small bowel lesions in Crohn’s disease显示文摘AIM: To investigate the prevalence of proximal small bowel (SB) lesions detected by wireless capsule endoscopy (WCE) in Crohn's disease (CD). METHODS: WCE was performed in 64 patients: 32 with CD of the distal ileum, and 32 controls with iron-deficiency anemia (IDA) or diarrhea. WCE was performed using the Given SB-WCE, followed by small intestine contrast ultrasonography (SICUS). Findings compatible with CD by using WCE included erosions, aphthoid or deep ulcers, and strictures/stenosis. RESULTS: WCE detected proximal SB lesions in 16/32 (50%) patients (14 aphthoid ulcers, 2 deep ulcers, one stricture), which appeared not to be related to clinical parameters [epigastric pain, age, smoking, non-steroidalanti-inflammatory drugs (NSAIDs), IDA]. Among patients with proximal SB lesions, 6 (37%) were smokers, 3 (19%) NSAID users, 3 (19%) had epigastric pain and 4 (25%) had IDA. SICUS detected proximal SB lesions in 3/32 patients (19%) also showing lesions with WCE. No correlations were observed between proximal SB lesions assessed by WCE or by SICUS (χ2 = 1.5, P = 0.2). CONCLUSION: The use of WCE allows the detection of previously unknown upper SB lesions in a high proportion of patients with a previous diagnosis of CD involving the distal ileum. | Carmelina Petruzziello Sara Onali Emma Calabrese Francesca Zorzi Marta Ascolani Giovanna Condino Elisabetta Lolli Paola Naccarato Francesco Pallone Livia Biancone | 2010 | World Journal of Gastroenterology2010,16,26: | 7 |
| 18 | Role of sirtuins in ischemia-reperfusion injury显示文摘Ischemia-reperfusion injury(IRI)remains an unresolved and complicated situation in clinical practice,especially in the case of organ transplantation.Several factors contribute to its complexity;the depletion of energy during ischemia and the induction of oxidative stress during reperfusion initiate a cascade of pathways that lead to cell death and finally to severe organ injury.Recently,the sirtuin family of nicotinamide adenine dinucleotide-dependent deacetylases has gained increasing attention from researchers,due to their involvement in the modulation of a wide variety of cellular functions.There are seven mammalian sirtuins and,among them,the nuclear/cytoplasmic sirtuin 1(SIRT1)and the mitochondrial sirtuin 3(SIRT3)are ubiquitously expressed in many tissue types.Sirtuins are known to play major roles in protecting against cellular stress and in controlling metabolic pathways,which are key processes during IRI.In this review,we mainly focus on SIRT1 and SIRT3 and examine their role in modulating pathways against energy depletion during ischemia and their involvement in oxidative stress,apoptosis,microcirculatory stress and inflammation during reperfusion.We present evidence of the beneficial effects of sirtuins against IRI and emphasize the importance of developing new strategies by enhancing their action. | Eirini Pantazi Mohamed Amine Zaouali Mohamed Bejaoui Emma Folch-Puy Hassen Ben Abdennebi Joan Roselló-Catafau | 2013 | World Journal of Gastroenterology2013,19,43: | 7 |
| 19 | Three-dimensional perfused human in vitro model of nonalcoholic fatty liver disease显示文摘AIM To develop a human in vitro model of non-alcoholic fatty liver disease(NAFLD), utilising primary hepatocytes cultured in a three-dimensional(3D) perfused platform. METHODS Fat and lean culture media were developed to directly investigate the effects of fat loading on primary hepatocytes cultured in a 3D perfused culture system. Oil Red O staining was used to measure fat loading in the hepatocytes and the consumption of free fatty acids(FFA) from culture medium was monitored. Hepatic functions, gene expression profiles and adipokine release were compared for cells cultured in fat and lean conditions. To determine if fat loading in the system could be modulated hepatocytes were treated with known anti-steatotic compounds. RESULTS Hepatocytes cultured in fat medium were found to accumulate three times more fat than lean cells and fat uptake was continuous over a 14-d culture. Fat loading of hepatocytes did not cause any hepatotoxicity and significantly increased albumin production. Numerous adipokines were expressed by fatty cells and genes associated with NAFLD and liver disease were upregulated including: Insulin-like growth factorbinding protein 1, fatty acid-binding protein 3 and CYP7A1. The metabolic activity of hepatocytes cultured in fatty conditions was found to be impaired and the activities of CYP3A4 and CYP2C9 were significantlyreduced, similar to observations made in NAFLD patients. The utility of the model for drug screening was demonstrated by measuring the effects of known antisteatotic compounds. Hepatocytes, cultured under fatty conditions and treated with metformin, had a reduced cellular fat content compared to untreated controls and consumed less FFA from cell culture medium.CONCLUSION The 3D in vitro NAFLD model recapitulates many features of clinical NAFLD and is an ideal tool for analysing the efficacy of anti-steatotic compounds. | Tomasz Kostrzewski Terri Cornforth Sophie A Snow Larissa Ouro-Gnao Cliff Rowe Emma M Large David J Hughes | 2017 | World Journal of Gastroenterology2017,23,2: | 6 |
| 20 | Role of aldehyde dehydrogenase 2 in ischemia reperfusion injury:An update显示文摘Aldehyde dehydrogenase 2(ALDH2) is best known for its critical detoxifying role in liver alcohol metabolism. However, ALDH2 dysfunction is also involved in a wide range of human pathophysiological situations and is associated with complications such as cardiovascular diseases, diabetes mellitus, neurodegenerative diseases and aging. A growing body of research has shown that ALDH2 provides important protection against oxidative stress and the subsequent loading of toxic aldehydes such as 4-hydroxy-2-nonenal and adducts that occur in human diseases, including ischemia reperfusion injury(IRI). There is increasing evidence of its role in IRI pathophysiology in organs such as heart, brain, small intestine and kidney; however, surprisingly few studies have been carried out in the liver, where ALDH2 is found in abundance. This study reviews the role of ALDH2 in modulating the pathways involved in the pathophysiology of IRI associated with oxidative stress, autophagy and apoptosis. Special emphasis is placed on the role of ALDH2 in different organs, on therapeutic 'preconditioning' strategies, and on the use of ALDH2 agonists such as Alda-1, which may become a useful therapeutic tool for preventing the deleterious effects of IRI in organ transplantation. | Arnau Panisello-Roselló Alexandre Lopez Emma Folch-Puy Teresa Carbonell Anabela Rolo Carlos Palmeira René Adam Marc Net Joan Roselló-Catafau | 2018 | World Journal of Gastroenterology2018,24,27: | 6 |