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| 1 | Glutamate reduces experimental intestinal hyperpermeability and facilitates glutamine support of gut integrity显示文摘AIM:To assess whether glutamate plays a similar role to glutamine in preserving gut wall integrity.METHODS:The effects of glutamine and glutamate on induced hyperpermeability in intestinal cell lines were studied.Paracellular hyperpermeability was induced in Caco2.BBE and HT-29CL.19A cell lines by adding phorbol-12,13-dibutyrate(PDB) apically,after which the effects of glutamine and glutamate on horseradish peroxidase(HRP) diffusion were studied.An inhibitor of glutamate transport(L-trans-pyrrolidine-2,4-dicarboxylic acid:trans-PDC) and an irreversible blocker(acivicin) of the extracellular glutamine to glutamate converting enzyme,γ-glutamyltransferase,were used.RESULTS:Apical to basolateral HRP flux increased significantly compared to controls not exposed to PDB (n=30,P<0.001).Glutamine application reduced hyperpermeability by 19%and 39%in the respective cell lines.Glutamate application reduced hyperpermeability by 30%and 20%,respectively.Incubation of HT29CL.19A cells with acivicin and subsequent PDB and glutamine addition increased permeability levels.Incubation of Caco2.BBE cells with trans-PDC followed by PDB and glutamate addition also resulted in high permeability levels.CONCLUSION:Apical glutamate-similar to glutaminecan decrease induced paracellular hyperpermeability.Extracellular conversion of glutamine to glutamate and subsequent uptake of glutamate could be a pivotal step in the mechanism underlying the protective effect of glutamine. | Mechteld AR Vermeulen Jeffrey de Jong Mathijs J Vaessen Paul AM van Leeuwen Alexander PJ Houdijk | 2011 | World Journal of Gastroenterology2011，17，12： | 9 |
| 2 | Botulinum toxin injections after surgery for Hirschsprung disease:Systematic review and meta-analysis显示文摘BACKGROUND A large proportion of patients with Hirschsprung disease experience persistent obstructive symptoms after corrective surgery.Persistent obstructive symptoms may result in faecal stasis that can develop into Hirschsprung-associated enterocolitis,a potential life-threatening condition.Important treatment to improve faecal passage is internal anal sphincter relaxation using botulinum toxin injections.AIM To give an overview of all empirical evidence on the effectiveness of botulinum toxin injections in patients with Hirschsprung disease.METHODS A systematic review and meta-analysis was done by searching PubMed,EMBASE and the Cochrane Library,using entry terms related to:(1)Hirschsprung disease;and(2)Botulinum toxin injections.14 studies representing 278 patients met eligibility criteria.Data that were extracted were proportion of patients with improvement of obstructive symptoms or less enterocolitis after injection,proportion of patients with adverse effects and data on type botulinum toxin,mean dose,average age at first injection and patients with associated syndromes.Random-effects meta-analysis was used to aggregate effects and random-effects meta-regression was used to test for possible confounding factors.RESULTS Botulinum toxin injections are effective in treating obstructive symptoms in on average 66%of patients[event rate(ER)=0.66,P=0.004,I2=49.5,n=278 patients].Type of botulinum toxin,average dose,average age at first injections and proportion of patients with associated syndromes were not predictive for this effect.Mean 7 duration of improvement after one botulinum toxin injections was 6.4 mo and patients needed on average 2.6 procedures.There was a significant higher response rate within one month after botulinum toxin injections compared to more than one month after Botulinum toxin injections(ER=0.79,vs ER=0.46,Q=19.37,P<0.001).Botulinum toxin injections were not effective in treating enterocolitis(ER 0.58,P=0.65,I2=71.0,n=52 patients).There were adverse effects in on average 17%of patients(ER=0.17,P<0.001,I2=52.1,n=187 patients),varying from temporary incontinence to mild anal pain.CONCLUSION Findings from this systematic review and meta-analysis indicate that botulinum toxin injections are effective in treating obstructive symptoms and that adverse effects were present,but mild and temporary. | Danielle Roorda Zarah AM Abeln Jaap Oosterlaan Lodewijk WE van Heurn Joep PM Derikx | 2019 | World Journal of Gastroenterology2019，25，25： | 4 |
| 3 | Antioxidant enriched enteral nutrition and oxidative stress after major gastrointestinal tract surgery显示文摘AIM: To investigate the effects of an enteral supple-ment containing antioxidants on circulating levels of antioxidants and indicators of oxidative stress after major gastrointestinal surgery.METHODS: Twenty-one patients undergoing major upper gastrointestinal tract surgery were randomised in a single centre, open label study on the effect of postoperative enteral nutrition supplementedwith antioxidants. The effect on circulating levels of antioxidants and indicators of oxidative stress, such as F2-isoprostane, was studied. RESULTS: The antioxidant enteral supplement showed no adverse effects and was well tolerated. After surgery a decrease in the circulating levels of antioxidant parameters was observed. Only selenium and glutamine levels were restored to pre-operative values one week after surgery. F2-isoprostane increased in the first three postoperative days only in the antioxidant supplemented group. Lipopolysaccharide binding protein (LBP) levels decreased faster in the antioxidant group after surgery.CONCLUSION: Despite lower antioxidant levels there was no increase in the circulating markers of oxidative stress on the first day after major abdominal surgery. The rise in F2-isoprostane in patients receiving the antioxidant supplement may be related to the conversion of antioxidants to oxidants which raises questions on antioxidant supplementation. Module AOX restored the postoperative decrease in selenium levels. The rapid decrease in LBP levels in the antioxidant group suggests a possible protective effect on gut wall integrity. Further studies are needed on the role of oxidative stress on outcome and the use of antioxidants in patients undergoing major abdominal surgery. | Mireille FM van Stijn Gerdien C Ligthart-Melis Petra G Boelens Peter G Scheffer Tom Teerlink Jos WR Twisk Alexander PJ Houdijk Paul AM van Leeuwen | 2008 | World Journal of Gastroenterology2008，14，45： | 4 |
| 4 | miR147b:白细胞介素-1β介导的人类星形胶质细胞炎症中的新型关键调节因子显示文摘星形胶质细胞是大脑炎症过程的重要介质,可能在包括癫痫在内的几种神经系统疾病中起重要作用。星形胶质细胞中可生产几种miRNA,是炎症通路的关键调节因子,还可能用作治疗靶标。本研究将探索在体外IL-1β介导的炎症条件下,星形胶质细胞内生成的miRNA及其功能,并在人癫痫脑组织中验证。我们通过测序评估IL-1β刺激的人胎儿星形胶质细胞培养物中的miRNA和mRNA表达。使用miRNA模拟物在细胞培养物中过表达miRNA。使用原位杂交技术检测患有结节性硬化症复合体或颞叶癫痫伴海马硬化患者的切除脑组织中miRNA的表达。我们发现了2种差异表达的miRNA:miR146a和miR147b,它们与免疫/炎症反应相关基因的表达增加有关。既往有研究报道,在星形胶质细胞和结节性硬化复合细胞培养物中使用IL-1β刺激后,miR147b的过表达降低了促炎介质IL-6和COX-2的表达。miR146a和miR147b过表达降低了星形胶质细胞的增殖并促进人神经干细胞的神经元分化。miR147b在致癫痫脑中的星形胶质细胞中表达增加。由于其抗炎和恢复异常星形细胞增殖和促进神经元分化的能力,miR146a和miR147b作为与炎症相关的神经疾病(例如癫痫)的潜在治疗靶标值得进一步研究。 | van Scheppingen J Mills JD Zimmer TS Broekaart DWM Iori V Bongaarts A Anink JJ Iyer AM Korotkov A Jansen FE van Hecke W Spliet WG van Rijen PC Baayen JC Vezzani A van Vliet EA Aronica E 聂昊 | 2018 | 神经损伤与功能重建2018，13，12： | 3 |
| 5 | Positron emission tomography to assess hypoxia and perfusion in lung cancer显示文摘In lung cancer, tumor hypoxia is a characteristic feature, which is associated with a poor prognosis and resistance to both radiation therapy and chemotherapy. As the development of tumor hypoxia is associated with decreased perfusion, perfusion measurements provide more insight into the relation between hypoxia and perfusion in malignant tumors. Positron emission tomography(PET) is a highly sensitive nuclear imaging technique that is suited for non-invasive in vivo monitoring of dynamic processes including hypoxia and its associated parameter perfusion. The PET technique enables quantitative assessment of hypoxia and perfusion in tumors. To this end, consecutive PET scans can be performed in one scan session. Using different hypoxia tracers, PET imaging may provide insight into the prognostic significance of hypoxia and perfusion in lung cancer. In addition, PET studies may play an important role in various stages of personalized medicine, as these may help to select patients for specifictreatments including radiation therapy, hypoxia modifying therapies, and antiangiogenic strategies. In addition, specific PET tracers can be applied for monitoring therapy. The present review provides an overview of the clinical applications of PET to measure hypoxia and perfusion in lung cancer. Available PET tracers and their characteristics as well as the applications of combined hypoxia and perfusion PET imaging are discussed. | Eline E Verwer Ronald Boellaard Astrid AM van der Veldt | 2014 | World Journal of Clinical Oncology2014，5，5： | 3 |
| 6 | 抗生素耐药性环境中产生和转移的人类健康风险评估(HHRA)显示文摘[背景]直到最近,人们才明确环境能影响抗生素耐药性风险对临床结果的影响,但迄今为止,很少有文献记录正式评估这些风险的方法。[目标]我们研究可能的方法,并试图确定人类健康风险评估(HHRA)的研究需求,这项评估注重环境在抗生素耐药性病原体所致的抗生素治疗失败中所起的作用。[方法]作者参加了2012年3月4—8日在加拿大魁北克省举行的研讨会,定义抗生素耐药性风险与人类健康环境评估的范围和目标。我们专注于环境中耐药性产生'热点区域'的关键要素,(与食品无关的)暴露评估以及剂量反应,以描述风险特征,从而改善抗生素耐药性管理的方案。[讨论]识别传统风险评估中有助于评估环境中抗生素耐药性的各个新方面。包括:a)解释附加的选择压力对环境耐药基因组的作用,即随着时间的推移,促使抗生素耐药性细菌(ARB)产生;b)在相关的环境组成部分的'热点区域'中识别和描述水平基因转移(HGT)率;c)针对不同健康结局和途径的ARB剂量修改传统的剂量反应方法。[结论]我们建议将抗生素耐药性产生造成的环境影响纳入所有涉及ARB的HHRA过程之中。由于可用的数据有限,一种多标准决策分析方法将有助于进行环境中抗生素耐药性的HHRA,并使风险管理者了解环境抗生素耐药性。 | Nicholas J.Ashbolt Alejandro Amézquita Thomas Backhaus Peter Borriello Kristian K.Brandt Peter Collignon Anja Coors Rita Finley William H.Gaze Thomas Heberer John R.Lawrence D.G.Joakim Larsson Scott A.McEwen James J.Ryan Jens Schnfeld Peter Silley Jason R.Snape Christel Van den Eede Edward Topp 王晓宇 张伊人 操仪 | 2014 | 环境与职业医学2014，31，2： | 3 |
| 7 | Non-invasive quantification of liver perfusion with dynamic computed tomography and a dual-input one compartment model显示文摘 | Van Beers BE Smith AM | 2000 | Clin Sci2000，99，6： | 1 |
| 8 | Mutans streptococci in subgingival plaque of treated and untreated patients with periodontitis显示文摘 | Van der Reijden WA Dellemijn Kippuw N Stijne-van Nes AM | 2001 | J Clin Periodontol2001，28，7： | 1 |
| 9 | Gene therapy with apoptin induces regression of xenografted human hepatomas 显示文摘 | Van der Eb MM Pietersen AM Speetjens FM | 2002 | Cancer Gene Ther2002，9，1： | 1 |
| 10 | Expression of proliferation and apoptosis-related proteins in usual ductal hyperplasia of the breast显示文摘 | Mommers EC van Diest PJ Leonhart AM | 1998 | Hum Pathol1998，29，12： | 1 |
| 11 | MR imaging of eosinophilic granuloma:report of 11 cases显示文摘 | de Schepper AM Ramon F van Marck E | 1993 | Skeletal Radiol1993，22，3： | 1 |
| 12 | The importance of antibodies against low-incidence RBc antigens in complete and abbreviated cross-matching显示文摘 | Sehonewille H van Zijl AM Wijermans PW | 2003 | Transfusion2003，43，7： | 1 |
| 13 | Isolation ofa novel coronavirus from a man with pneumonia in Saudi Arabia显示文摘 | Zaki AM van Boheemen S Bestebroer TM | 2012 | N Engl J Med2012，367，19： | 1 |
| 14 | Causes of death--other than progressive leukemia--in childhood acute lymphoblastic(ALL) and myeloid leukemia (AML):the Dutch Childhood Oncology Group experience显示文摘 | Slats AM Egeler RM van der Does-van den Berg A | | 0，，： | 1 |
| 15 | Magic traits in speciation:‘magic' but not rare显示文摘 | Servedio MR Van Doom GS Kopp M Frame AM Nosil P | | 0，，： | 1 |
| 16 | Rec- ognition of facial emotion and affective prosody in children with ASD (-ADHD) and their unaffected siblings显示文摘 | Oerlemans AM van der Meer JM van Steijn DJ | 2014 | Eur Child Adolesc Psychiatry2014，23，5： | 1 |
| 17 | Brain magnetic resonance imaging correlates of impaired cognition in patients with type 2 diabetes显示文摘 | Manschot SM Brands AM van der Grond J | 2006 | Diabete2006，55，4： | 1 |
| 18 | Functional adi- ponectin resistance at the level of the skelet al muscle in mild to moder- ate chronic heart failure 显示文摘 | Van Berendoncks AM Gamier A Beckers P | 2010 | Circ Heart Fail2010，3，2： | 1 |
| 19 | Receptor for advanced glycation end products facilitates host defense during Escherichia coli-induced abdominal sepsis in mice显示文摘 | van Zoelen MA Schmidt AM Florquin S | 2009 | J Infect Dis2009，200，5： | 1 |
| 20 | 显示文摘 | Jansen SR Van Ziel AM Baarsma HA | 2010 | Am J Physiol Lung Cell Mol Physiol2010，299，2： | 1 |
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