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1温度对美拉德反应的研究(英文)显示文摘本文报道了反应温度对以d-葡萄糖和l-甘氨酸水溶液模式体系美拉德反应的影响。研究了在不同反应温度(80、100、120℃)和不同反应时间下,体系中糖和氨基酸的降解程度,反应中间体:阿利德诺和有机酸的累积程度,类黑素的形成及pH变化程度。研究结果表明:随着反应温度和反应时间的增加,反应速率加快。吴少雄 M A J S van Boeke S I F S Martins 郭祀远 李琳 2005食品科学2005,26,7:54
2Report of an international workshop to standardize baseline evaluation and response criteria for primary CNS lymphoma.显示文摘Abrey LE Batchelor TT Ferreri A J Gospodarowicz M Pulczynski EJ Zucca E Smith JR Korfel A Soussain C DeAngelis LM Neuwelt EA O′Neill BP Thiel E Shenkier T Graus F van den Bent M Seymour JF Poortmans P Armitage JO Cavalli F 2005中国神经肿瘤杂志2005,3,3:53
3初级保健中原发性醛固酮增多症的患病率和临床表现显示文摘原发性醛固酮增多症(primaryaldosteronism,PA)是一种异质性疾病,以高血压和相对自主于肾素血管紧张素系统产生过量醛固酮为特征。与心血管病风险相似的原发性高血压患者相比,PA患者发生心脑血管并发症的风险以及代谢综合征患病率增加,提示正确诊断PA的重要性。Monticone S Burrello J Tizzani D Bertello C Viola A Buffolo F Gabetti L Mengozzi G Williams TA Rabbia F Veglio F Mulatero P 练桂丽 叶鹏 2017中华高血压杂志2017,25,5:58
4最新AD研究用诊断标准:IWG-2标准显示文摘在过去的8年中,国际工作组织(IWG)和美国国立老化研究院-阿尔茨海默协会(NIA-AA)建立了阿尔茨海默病(AD)诊断标准,它能更好地定义AD的临床表型,整合了生物标记物于诊断流程中,并覆盖了疾病的全程。本意见书充分地权衡了IWG标准的优缺点,建议改进诊断框架。依据这些改进,AD的诊断变得简单,只要有恰当的AD临床表型(典型或不典型)和与AD的病理相一致的病理生理学生物标志物出现。我们认为疾病的下游的定位性生物标志,如容积性磁共振成像(MRI)和氟脱氧葡萄糖-正电子发射型计算机断层成像(FDG-PET)等,适合更好地测量和监测疾病过程。本文还详述了非典型性AD、混合性AD和AD临床前期的特异诊断标准。陈刚 曹雯炜 俞羚 糜建华 Dubois B Feldman HH Jacova C Hampel H Molinuevo JL Blennow K DeK osky ST Gauthier S Selkoe D Bateman R Cappa S Crutch S Engelborghs S Frisoni GB Fox NC Galasko D Habert MO Jicha GA Nordberg A Pasquier F Rabinovici G Robert P Rowe C Salloway S Sarazin M Epelbaum S de Souza LC Vellas B Visser PJ Schneider L Stern Y Scheltens P Cummings JL 2014神经病学与神经康复学杂志2014,11,3:31
5尿钠排泄、血压、心血管病与死亡率的关系:社区前瞻性流行病学队列研究显示文摘WHO建议人群钠摄人<2 g/d作为预防心血管病的措施之一,但这一目标在任何国家都没有实现。该建议主要基于短期血压试验的个体水平数据,没有来自随机试验或观察性研究的关于低钠摄入与降低心血管事件的数据。前瞻性城市农村流行病学研究目前正在21个国家进行。该文对其中18个国家的数据进行分析,其中包含了临床结果数据。Mente A O'Donnell M Rangarajan S McQueen M Dagenais G Wielgosz A Lear S Ah STL Wei L Diaz R Avezum A Lopez-Jaramillo P Lanas F Mony P Szuba A Iqbal R Yusuf R Mohammadifard N Khatib R Yusoff K Ismail N Gulec S Rosengren A Yusufali A Kruger L Tsolekile LP Chifamba J Dans A Alhabib KF Yeates K Teo K Yusuf S 刘莉 叶鹏 2018中华高血压杂志2018,26,12:29
6Recent advances in endovascular techniques for management of acute nonvariceal upper gastrointestinal bleeding显示文摘Over the past two decades,transcatheter arterial embolization has become the first-line therapy for the management of upper gastrointestinal bleeding that is refractory to endoscopic hemostasis.Advances in catheter-based techniques and newer embolic agents, as well as recognition of the effectiveness of minimally invasive treatment options,have expanded the role of interventional radiology in the management of hemorrhage for a variety of indications,such as peptic ulcerbleeding,malignant disease,hemorrhagic Dieulafoy lesions and iatrogenic or trauma bleeding.Transcatheter interventions include the following:selective embolization of the feeding artery,sandwich coil occlusion of the gastroduodenal artery,blind or empiric embolization of the supposed bleeding vessel based on endoscopic findings and coil pseudoaneurysm or aneurysm embolization by three-dimensional sac packing with preservation of the parent artery.Transcatheter embolization is a fast,safe and effective,minimally invasive alternative to surgery when endoscopic treatment fails to control bleeding from the upper gastrointestinal tract.This article reviews the various transcatheter endovascular techniques and devices that are used in a variety of clinical scenarios for the management of hemorrhagic gastrointestinal emergencies.Romaric F Loffroy Basem A Abualsaud Ming D Lin Pramod P Rao 2011World Journal of Gastrointestinal Surgery2011,3,7:28
7世界胃肠病学组织全球指南——发展中国家幽门螺杆菌感染显示文摘世界上有一半人口感染幽门螺杆菌(H.pylori),其感染率因地理位置、种族、年龄和社会经济状况不同而存在很大差异.在发展中国家较高.发达国家较低。但总体而言,近年世界许多地区的H.pylori感染率均呈下降趋势。Hunt RH Xiao SD Megraud F Leon-Barua R Bazzoli F van der Merwe S Vaz Coelho LG Fock M Fedail S Cohen H Malfertheiner P Vakil N Hamid S Goh KL Wong BCY Krabshuis J Le Mair A 杜颖 戴宁 2011胃肠病学2011,16,7:27
8急性缺血性卒中的血管内治疗:神经介入外科学学会实践标准委员会的报告显示文摘目的总结采用血管内技术治疗急性缺血性卒中的有关证据并等级分类。方法对美国心脏协会(American Heart Association,AHA)以前发表的推荐意见进行审查并作为当前流程的基础。在此这基础上,进行系统的文献回顾以评估支持急性缺血性卒中血管内治疗的证据。根据AHA卒中委员会和牛津大学循证医学中心提出的循证医学证据分级指南进行评估。对操作安全性、技术效果以及对临床转归的影响进行特别审核。K A Blackham P M Meyers T A Abruzzo F C Alberquerque D Fiorella J Fraser D Frei C D Gandhi D V Heck J A Hirsch D P Hsu M Jayaraman S Narayanan C Prestigiacomo J L Sunshine 包元飞(译) 李永坤(译) 刘新峰(译) 2012国际脑血管病杂志2012,20,12:28
9WJD 5^(th) Anniversary Special Issues(2): Type 2 diabetes Inflammation in diabetic kidney disease显示文摘Diabetes mellitus entails significant health problems worldwide.The pathogenesis of diabetes is multifactorial,resulting from interactions of both genetic and environmental factors that trigger a complex network of pathophysiological events,with metabolic and hemodynamic alterations.In this context,inflammation has emerged as a key pathophysiology mechanism.New pathogenic pathways will provide targets for prevention or future treatments.This review will focus on the implications of inflammation in diabetes mellitus,with special attention to inflammatory cytokines.Patricia M García-García María A Getino-Melian Virginia Domínguez-Pimentel Juan F Navarro-Gonzalez 2014World Journal of Diabetes2014,5,4:26
10肝细胞焦亡和炎性小体颗粒释放诱发肝星状细胞活化和肝纤维化显示文摘【据Journal of Hepatology 2020年8月报道】肝细胞焦亡和炎性小体颗粒释放诱发肝星状细胞活化和肝纤维化(作者Gaul S等)肝细胞死亡增加导致急性和慢性肝病的病理改变。肝细胞焦亡和细胞外炎性小体释放在肝病中的作用尚不清楚。来自美国圣地牙哥加利福尼亚大学儿科部的Gaul等使用原代小鼠和人肝细胞、肝细胞特异性L351P Nlrp3 KI CreA小鼠和Gsdmd KO小鼠研究肝细胞焦亡及其对肝脏炎症和损伤的影响。从突变型NLRP3-yfp HEK细胞中分离到细胞外NLRP3炎性体,并在LX2和原代人肝星状细胞中研究内化。进一步使用了154例经活检证实的NAFLD成人受试者的肝细胞(西澳大利亚奈德兰兹查尔斯·盖德纳爵士医院)。李杰 牛俊奇 GAUL S LESZCZYNSKA A ALEGRE F 2020临床肝胆病杂志2020,36,10:26
11Dissimilatory Fe(Ⅲ) reduction characteristics of paddy soil extract cultures treated with glucose or fatty acids显示文摘Dissimilatory Fe(Ⅲ) reduction is a universal process with irreplaceable biological and environmental importance in anoxic environments. Our knowledge about Fe(Ⅲ) reduction predominantly comes from pure cultures of dissimilatory Fe(Ⅲ) reducing bacteria (DFRB). The objective of this study was to compare the effects of glucose and a selection of short organic acids (citrate, succinate, pyruvate, propionate, acetate, and formate) on Fe(Ⅲ) reduction via the anaerobic culture of three paddy soil solutions with Fe(OH)3 as the sole electron acceptor. The results showed significant differences in Fe(Ⅲ) reduction among the three paddy soil solutions and substrate types. Bacteria from the Sichuan paddy soil responded quickly to substrate supply and showed higher Fe(Ⅲ) reducing activity than the other two soil types. Bacteria in the Jiangxi paddy soil culture solution could not use propionate as a source of electrons for Fe(Ⅲ) reduction. Similarly, bacteria in the Jilin paddy soil culture could not use succinate effectively. Pyruvate was readily used by cultures from all three paddy soil solutions, thus indicating that there were some similarities in substrate utilization by bacteria for Fe(Ⅲ) reduction. The use of glucose and citrate as substrate for dissimilatory Fe(Ⅲ) reduction indicates important ecological implications for this type of anoxic respiration.HE Jiangzhou1,2, QU Dong1, 1. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China.2. Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Tarim University, Alar, Xinjiang Uygur Autonomous Region, Xinjiang 843300, China 2008Journal of Environmental Sciences2008,20,9:24
12OPTICAL PROPERTIES OF GeO_2 AND Ge NANOCRYSTALS显示文摘he co m pound m aterial of n m size particles Ge O2 Si O2 w as synthesied through hydrolysis of Si( O C2 H4) and Ge Cl4 . A heat treatm ent w as carried out for the sa m ples at 100 ~1200 ℃in air . Its optical property w as deter mined by U V Vis spectur m . We have found that theabsorption edge of spectru m shifted progressively to longer w avelengths . The quantu m size ef fect of nanocrystals appears because crystals gro w and energy of optical band gap reduces d ueto the influence of te m perature . By the analysis of X ray diffraction w e have observed theprocess in w hich the structure of particles changed fro m disorder into order .Y.H.Zhou 1) ,Y.Y.Feng 2) and H.Y.Lu 2) 1)Department of Physics Nanjing Normal University, Nanjing 210097,China 2)Physics and Ch寁O P T I C A L P R O P E R T I E S O F Ge O2 A N D Ge N A N O C R Y S T A L S Y. H. Zhou1) , Y. Y. Feng2) 1999Acta Metallurgica Sinica(English Letters)1999,12,5:22
13Non-alcoholic fatty liver disease and diabetes: From physiopathological interplay to diagnosis and treatment显示文摘Non-alcoholic fatty liver disease(NAFLD)is highly prevalent in patients with diabetes mellitus and increasing evidence suggests that patients with type 2diabetes are at a particularly high risk for developing the progressive forms of NAFLD,non-alcoholic steatohepatitis and associated advanced liver fibrosis.Moreover,diabetes is an independent risk factor for NAFLD progression,and for hepatocellular carcinoma development and liver-related mortality in prospective studies.Notwithstanding,patients with NAFLD have an elevated prevalence of prediabetes.Recent studies have shown that NAFLD presence predicts the development of type2 diabetes.Diabetes and NAFLD have mutual pathogenetic mechanisms and it is possible that genetic and environmental factors interact with metabolic derangements to accelerate NAFLD progression in diabetic patients.The diagnosis of the more advanced stages of NAFLD in diabetic patients shares the same challenges as in non-diabetic patients and it includes imaging and serological methods,although histopathological evaluation is still considered the gold standard diagnostic method.An effective established treatment is not yet available for patients with steatohepatitis and fibrosis and randomized clinical trials including only diabetic patients are lacking.We sought to outline the published data including epidemiology,pathogenesis,diagnosis and treatment of NAFLD in diabetic patients,in order to better understand the interplay between these two prevalent diseases and identify the gaps that still need to be fulfilled in the management of NAFLD in patients with diabetes mellitus.Nathalie C Leite Cristiane A Villela-Nogueira Claudia R L Cardoso Gil F Salles 2014World Journal of Gastroenterology2014,20,26:21
14流体饱和多孔介质中热发展强迫对流的熵产分析显示文摘利用Darcy流动模型,同时考虑粘性耗散效应,分析研究了以两等温平板为边界的多孔介质中,热发展强迫对流的熵产.参数研究表明,组参数和Péclet数减小,而Brinkman数增大时,熵产增大.形象化的热线表示方法着重应用于Br<0的情况,在这种情况下,在顺流的某些位置上,存在热传递方向的改变,即从原来的壁面向外传热变为向壁面传热.K·霍曼 A·伊济拉利 F·霍曼 吴承平(译) 张禄坤(校) 2008应用数学和力学2008,29,2:20
15在不影响人足细胞(前)肾素受体信号下,阿利吉仑能抑制细胞内血管紧张素Ⅱ水平显示文摘Sakoda M Ichihara A Kurauchi-Mito A Narita T Kinou-chi K Murohashi-Bokuda K Saleem MA Nishiyama A Suzuki F Itoh H 黄晓斌 2010中华高血压杂志2010,18,7:18
16纳秒、皮秒和飞秒激光脉冲对材料表面的改性(英文)显示文摘对基体材料镉镍铁合金600和多层TiAlN/TiN涂层的激光表面改性在基础研究和实际应用中有着很好的前景。本文观察了由超短脉冲(fs和ns)和短脉冲(ns)激光器引起的镉镍铁合金600和TiAlN/TiN镀层的表面变化。结果显示,3种激光都能使靶面发生形态改变,超短脉冲的破坏轮廓更为清晰。与ps激光脉冲相比,fs激光脉冲能产生更严重的破坏。与产生半球体形状的ps激光束相反,fs激光脉冲产生的破坏斑是圆锥形的。另外,ns脉冲辐照时热效应占支配地位,且所有的辐照都伴随着等离子体。TRTICAM S GAKOVIC B M RADAK B B BATANI D TARASENKO V F PETROVIC S STASIC J MILOVANOVIC D KRMPOT A JELENKOVIC B 2011光学精密工程2011,19,2:18
17Autophagy is required for self-renewal and differentiation of adult human stem cells显示文摘Souzan Salemi Shida Yousefi Mihai A Constantinescu Martin F Fey Hans-Uwe Simon 2012Cell Research2012,22,2:17
18Microbiota modification by probiotic supplementation reduces colitis associated colon cancer in mice显示文摘AIM To investigate the effect of probiotic supplementation during the development of an experimental model of colitis associated colon cancer(CAC). METHODS C57 BL/6 mice received an intraperitoneal injection of azoxymethane(10 mg/kg), followed by three cycles of sodium dextran sulphate diluted in water(5% w/v). Probiotic group received daily a mixture of Lactobacillus acidophilus, Lactobacil us rhamnosus and Bifidobacterium bifidum. Microbiota composition was assessed by 16 Sr RNA Illumina Hi Seq sequencing. Colon samples were collected for histological analysis. Tumor cytokines was assessed by Real Time-PCR(Polymerase Chain Reaction); and serum cytokines by Multiplex assay. All tests were two-sided. The level of significance was set at P < 0.05. Graphs were generated and statistical analysis performed using the software Graph Pad Prism 5.0. The project was approved by the institutional review board committee. RESULTS At day 60 after azoxymethane injection, the mean number of tumours in the probiotic group was 40% lower than that in the control group, and the probiotic group exhibited tumours of smaller size(< 2 mm)(P < 0.05). There was no difference in richness and diversity between groups. However, there was a significant difference in beta diversity in the multidimensional scaling analysis. The abundance of the genera Lactobacillus, Bifidobacterium, Allobaculum, Clostridium XI and Clostridium XVⅢ increased in the probiotic group(P < 0.05). The microbial change was accompanied by reduced colitis, demonstrated by a 46% reduction in the colon inflammatory index; reduced expression of the serum chemokines RANTES and Eotaxin; decreased p-IKK and TNF-α and increased IL-10 expression in the colon. CONCLUSION Our results suggest a potential chemopreventive effect of probiotic on CAC. Probiotic supplementation changes microbiota structure and regulates the inflammatory response, reducing colitis and preventing CAC.Maria Carolina S Mendes Daiane SM Paulino Sandra R Brambilla Juliana A Camargo Gabriela F Persinoti José Barreto C Carvalheira 2018World Journal of Gastroenterology2018,24,18:17
19Laparoscopic versus open surgery for rectal cancer (COLOR II): short-term outcomes of a randomised, phase 3 trial显示文摘Martijn HGM van der Pas Eva Haglind Miguel A Cuesta Alois Fürst Antonio M Lacy Wim CJ Hop Hendrik Jaap Bonjer 2013Lancet Oncology2013,,:17
20XRCC1 and DNA polymerase β in cellular protection against cytotoxic DNA single-strand breaks显示文摘Julie K Horton Mary Watson Donna F Stefanick Daniel T Shaughnessy Jack A Taylor Samuel H Wilson 2008Cell Research2008,18,1:17
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