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| 1 | The role of gut microbiota(commensal bacteria)and the mucosal barrier in the pathogenesis of inflammatory and autoimmune diseases and cancer:contribution of germ-free and gnotobiotic animal models of human diseases显示文摘Metagenomic approaches are currently being used to decipher the genome of the microbiota(microbiome),and,in parallel,functional studies are being performed to analyze the effects of the microbiota on the host.Gnotobiological methods are an indispensable tool for studying the consequences of bacterial colonization.Animals used as models of human diseases can be maintained in sterile conditions(isolators used for germ-free rearing)and specifically colonized with defined microbes(including non-cultivable commensal bacteria).The effects of the germ-free state or the effects of colonization on disease initiation and maintenance can be observed in these models.Using this approach we demonstrated direct involvement of components of the microbiota in chronic intestinal inflammation and development of colonic neoplasia(i.e.,using models of human inflammatory bowel disease and colorectal carcinoma).In contrast,a protective effect of microbiota colonization was demonstrated for the development of autoimmune diabetes in non-obese diabetic(NOD)mice.Interestingly,the development of atherosclerosis in germ-free apolipoprotein E(ApoE)-deficient mice fed by a standard low-cholesterol diet is accelerated compared with conventionally reared animals.Mucosal induction of tolerance to allergen Bet v1 was not influenced by the presence or absence of microbiota.Identification of components of the microbiota and elucidation of the molecular mechanisms of their action in inducing pathological changes or exerting beneficial,disease-protective activities could aid in our ability to influence the composition of the microbiota and to find bacterial strains and components(e.g.,probiotics and prebiotics)whose administration may aid in disease prevention and treatment. | Helena Tlaskalova-Hogenova Renata Stepankova Hana Kozakova Tomas Hudcovic Luca Vannucci Ludmila Tuckova Pavel Rossmann TomasHrncır Miloslav Kverka Zuzana Zakostelska Klara Klimesova Jaroslava Pribylova Jirina Bartova Daniel Sanchez Petra Fundova Dana Borovska Dagmar Sru˚tkova Zdenek Zıdek Martin Schwarzer Pavel Drastich David P Funda | 2011 | Cellular & Molecular Immunology2011,8,2: | 47 |
| 2 | Skeletal muscle mitochondrial remodeling in exercise and diseases显示文摘 | Zhenji Gan Tingting Fu Daniel R Kelly Rick B. Vega | 2018 | Cell Research2018,28,10: | 25 |
| 3 | Mesalazine preparations for the treatment of ulcerative colitis: Are all created equal?显示文摘Oral mesalazine(also known as mesalamine) is a 5-aminosalicylic acid compound used in the treatment of mild to moderate ulcerative colitis, with high rates of efficacy in induction and maintenance of remission.The therapeutic effect of mesalazine occurs topically at the site of diseased colonic mucosa. A myriad of oral mesalazine preparations have been formulated with various drug delivery methods to minimize systemic absorption and maximise drug availability at the inflamed colonic epithelium. It remains unclear whether different oral mesalazine formulations are bioequivalent. This review aims to evaluate the differences between mesalazine formulations based on the currently available literature and explore factors which may influence the selection of one agent above another. | Bei Ye Daniel R van Langenberg | 2015 | World Journal of Gastrointestinal Pharmacology and Therapeutics2015,6,4: | 14 |
| 4 | WJSC 6^(th) Anniversary Special Issues(2):Mesenchymal stem cells Progress of mesenchymal stem cell therapy for neural and retinal diseases显示文摘Complex circuitry and limited regenerative power make central nervous system(CNS)disorders the most challenging and difficult for functional repair.With elusive disease mechanisms,traditional surgical and medical interventions merely slow down the progression of the neurodegenerative diseases.However,the number of neurons still diminishes in many patients.Recently,stem cell therapy has been proposed as a viable option.Mesenchymal stem cells(MSCs),a widely-studied human adult stem cell population,have been discovered for more than 20 years.MSCs have been found all over the body and can be conveniently obtained from different accessible tissues:bone marrow,blood,and adipose and dental tissue.MSCs have high proliferative and differentiation abilities,providing an inexhaustible source of neurons and glia for cell replacement therapy.Moreover,MSCs also show neuroprotective effects without any genetic modification or reprogramming.In addition,the extraordinary immunomodulatory properties of MSCs enable autologous and heterologous transplantation.These qualities heighten the clinical applicability of MSCs when dealing with the pathologies of CNS disorders.Here,we summarize the latest progress of MSC experimental research as well as human clinical trials for neural and retinal diseases.This review article will focus on multiple sclerosis,spinal cord injury,autism,glaucoma,retinitis pigmentosa and age-related macular degeneration. | Tsz Kin Ng Veronica R Fortino Daniel Pelaez Herman S Cheung | 2014 | World Journal of Stem Cells2014,6,2: | 13 |
| 5 | 精液分析和精子功能测试显示文摘尽管对于精液分析的临床应用价值仍存在争议,但男性生育能力的调查研究仍有赖于标准化的精液参数分析。这一现状在发展中国家和发达国家的不育诊所中尤其常见,其它可选择的检测和更复杂高级的技术还未被广泛应用。这篇综述着重强调了世界卫生组织新的精液分析手册中描述的精液分析方面的重要调整。手册中提到的最重要的变化是,以循证医学为基础的出版物作为参考来确定常态值的临界值。除了上述的变化,初步评估及操作方法在大多数情况下与之前的版本相同。此外,本文评估了男科学质量控制的重要性,强调了对精子形态的评价。rygerberg医院自1995年开始启动了世界卫生组织精子形态学培训计划。外部质量控制计划已经确保了绝大多数参与者已经具有了精子形态判断技能。本文进一步综合了当前的精子功能试验,如诱导顶体反应,精子一透明带结合试验,以及对精子质量的影响(DNA完整性),和精子功能检测与精子形态的关系。 | Daniel R Franken Sergio Oehninger | 2012 | Asian Journal of Andrology2012,14,1: | 11 |
| 6 | 炼钢过程含铁尘泥的基本物性与综合利用显示文摘对国内8家具有行业代表性的长、短流程钢铁企业含铁粉尘利用现状进行调研,并采用X射线荧光光谱、化学分析、激光粒度分析、X射线衍射和扫描电子显微分析等手段对含铁粉尘性状进行了分析.结果表明:炼钢粉尘铁、钙、锌元素含量较高,不仅可在钢铁生产中回收利用,还可开发为高附加值产品,用于化工、材料等行业;但产自不同工序的粉尘的粒度、比表面积、水分等物性差异较大;铁主要以磁铁矿、赤铁矿、氧化亚铁、少量金属铁及铁酸钙形式存在,Zn以铁酸锌存在.炼钢粉尘的研发利用必须充分考虑上述诸多因素.目前炼钢粉尘外售比例较大,部分用作烧结配料,少量用于炼钢造渣剂,利用层次较低,需研究高效利用工艺技术. | 庄昌凌 刘建华 崔衡 刘松涛 Daniele R Attorre Jim Hunt | 2011 | 北京科技大学学报2011,33,S1: | 11 |
| 7 | Inflammatory bowel disease serology in Asia and the West显示文摘AIM:To study serological antibodies in Caucasians and Asians,in health and inflammatory bowel disease(IBD),in Australia and Hong Kong(HK).METHODS:Anti-glycan antibodies[anti-chitobioside(ACCA),anti-laminaribioside(ALCA)],and anti-mannobioside(AMCA),anti-Saccharomyces cervisiae(gASCA);and atypical perinuclear anti-neutrophil cytoplasmic antibody(pANCA)were tested in IBD patients,their unaffected relatives,and healthy controls in Australia and HK(China).Antibody status(positive or negative)and titre was compared between subjects of different geography,ethnicity and disease state.RESULTS:Ninety subjects were evaluated:21 Crohn’s disease(CD),32 ulcerative colitis(UC),29 healthy controls,and 8 IBD patient relatives.Forty eight subjects were Australian(29 Caucasian and 19 ethnic Han Chinese)and 42 were from HK(all Han Chinese).Caucasian CD patients had a significantly higher antibody prevalence of gASCA(67%vs 3%,P<0.001),ALCA(44%vs 6%,P=0.005),and AMCA(67%vs 15%,P=0.002),whereas HK CD patients had a higher prevalence of only AMCA(58%vs 25%,P=0.035),when compared with UC and healthy subjects in both countries.Caucasian CD had significantly higher gASCA prevalence(67%vs 0%,P<0.001)and titre(median59 vs 9,P=0.002)than HK CD patients.Prevalence and titres of ALCA,ACCA and AMCA did not differ between CD in the two countries.Presence of at least one antibody was higher in Caucasian than HK CD patients(100%vs 58%,P=0.045).pANCA did not differ between countries or ethnicity.CONCLUSION:Serologic CD responses differ between HK Asian and Australian Caucasian patients.Different genetic,environmental or disease pathogenic factors may account for these differences. | Lani Prideaux Michael A Kamm Peter De Cruz Daniel R van Langenberg Siew C Ng Iris Dotan | 2013 | World Journal of Gastroenterology2013,19,37: | 10 |
| 8 | Evolving treatment strategies for colorectal cancer: A critical review of current therapeutic options显示文摘Management of rectal cancer has markedly evolved over the last two decades.New technologies of staging have allowed a more precise definition of tumor extension.Refinements in surgical concepts and techniques have resulted in higher rates of sphincter preservation and better functional outcome for patients with this malignancy.Although,preoperative chemoradiotherapy followed by total mesorectal excision has become the standard of care for locally advanced tumors,many controversial matters in management of rectal cancer still need to be defined.These include the feasibility of a non-surgical approach after a favorable response to neoadjuvant therapy,the ideal margins of surgical resection for sphincter preservation and the adequacy of minimally invasive techniques of tumor resection.In this article,after an extensive search in PubMed and Embase databases,we critically review the current strategies and the most debatable matters in treatment of rectal cancer. | Daniel C Damin Anderson R Lazzaron | 2014 | World Journal of Gastroenterology2014,20,4: | 10 |
| 9 | Oncogenic role of leptin and Notch interleukin-1 leptin crosstalk outcome in cancer显示文摘Obesity is a global pandemic characterized by high levels of body fat(adiposity) and derived-cytokines(i.e., leptin). Research shows that adiposity and leptin provide insight on the link between obesity and cancer progression. Leptin's main function is to regulate energy balance. However, obese individuals routinely develop leptin resistance, which is the consequence of the breakdown in the signaling mechanism controlling satiety resulting in the accumulation of leptin. Therefore, leptin levels are often chronically elevated in human obesity. Elevated leptin levels are related to higher incidence, increased progression and poor prognosis of several human cancers. In addition to adipose tissue, cancer cells can also secrete leptin and overexpress leptin receptors. Leptin is known to act as a mitogen, inflammatory and pro-angiogenic factor that induces cancer cell proliferation and tumor angiogenesis. Moreover, leptin signaling induces cancer stem cells, which are involved in cancer recurrence and drug resistance. A novel and complex signaling crosstalk between leptin, Notch and interleukin-1(IL-1) [Notch, IL-1 and leptin crosstalk outcome(NILCO)] seems to be an important driver of leptin-induced oncogenic actions. Leptin and NILCO signaling mediate the activation of cancer stem cells that can affect drug resistance. Thus, leptin and NILCO signaling are key links between obesity and cancer progression. This review presents updated data suggesting that adiposity affects cancer incidence, progression, and response to treatment. Here we show data supporting the oncogenic role of leptin in breast, endometrial, and pancreatic cancers. | Crystal C Lipsey Adriana Harbuzariu Danielle Daley-Brown Ruben R Gonzalez-Perez | 2016 | World Journal of Methodology2016,6,1: | 8 |
| 10 | Dual color optogenetic control of neural populations using low-noise,multishank optoelectrodes显示文摘Optogenetics allows for optical manipulation of neuronal activity and has been increasingly combined with intracellular and extracellular electrophysiological recordings.Genetically-identified classes of neurons are optically manipulated,though the versatility of optogenetics would be increased if independent control of distinct neural populations could be achieved on a sufficient spatial and temporal resolution.We report a scalable multisite optoelectrode design that allows simultaneous optogenetic control of two spatially intermingled neuronal populations in vivo.We describe the design,fabrication,and assembly of low-noise,multisite/multicolor optoelectrodes.Each shank of the four-shank assembly is monolithically integrated with 8 recording sites and a dualcolor waveguide mixer with a 7×30μm cross-section,coupled to 405 nm and 635 nm injection laser diodes(ILDs)via gradient-index(GRIN)lenses to meet optical and thermal design requirements.To better understand noise on the recording channels generated during diode-based activation,we developed a lumped-circuit modeling approach for EMI coupling mechanisms and used it to limit artifacts to amplitudes under 100μV upto an optical output power of 450μW.We implanted the packaged devices into the CA1 pyramidal layer of awake mice,expressing Channelrhodopsin-2 in pyramidal cells and ChrimsonR in paravalbumin-expressing interneurons,and achieved optical excitation of each cell type using sub-mW illumination.We highlight the potential use of this technology for functional dissection of neural circuits. | Komal Kampasi Daniel F.English John Seymour Eran Stark Sam McKenzie Mihály Vöröslakos György Buzsáki Kensall D.Wise Euisik Yoon | 2018 | Microsystems & Nanoengineering2018,4,1: | 8 |
| 11 | Operative complications and economic outcomes of cholecystectomy for acute cholecystitis显示文摘BACKGROUND Recent management of acute cholecystitis favors same admission(SA)or emergent cholecystectomy based on overall shorter hospital stay and therefore cost savings.We adopted the practice of SA cholecystectomy for the treatment of acute cholecystitis at our tertiary care center and wanted to evaluate the economic benefit of this practice.We hypothesized that the existence of complications,particularly among patients with a higher degree of disease severity,during SA cholecystectomy could negate the cost savings.AIM To compare complication rates and hospital costs between SA vs delayed cholecystectomy among patients admitted emergently for acute cholecystitis.METHODS Under an IRB-approved protocol,complications and charges for were obtained for SA,later after conservative management(Delayed),or elective cholecystectomies over an 8.5-year period.Patients were identified using the acute care surgery registry and billing database.Data was retrieved via EMR,operative logs,and Revenue Cycle Operations.The severity of acute cholecystitis was graded according to the Tokyo Guidelines.TG18 categorizes acute cholecystitis by Grades 1,2,and 3 representing mild,moderate,and severe,respectively.Comparisons were analyzed withχ2,Fisher’s exact test,ANOVA,ttests,and logistic regression;significance was set at P<0.05.RESULTS Four hundred eighty-six(87.7%)underwent a SA while 68 patients(12.3%)received Delayed cholecystectomy.Complication rates were increased after SA compared to Delayed cholecystectomy(18.5%vs 4.4%,P=0.004).The complication rates of patients undergoing delayed cholecystectomy was similar to the rate for elective cholecystectomy(7.4%,P=0.35).Mortality rates were 0.6%vs 0%for SA vs Delayed.Patients with moderate disease(Tokyo 2)suffered more complications among SA while none who were delayed experienced a complication(16.1%vs 0.0%,P<0.001).Total hospital charges for SA cholecystectomy were increased compared to a Delayed approach($44500±$59000 vs$35300±$16700,P=0.019).The relative risk of developing a complication was 4.2x[95%confidence interval(CI):1.4-12.9]in the SA vs Delayed groups.Among eight patients(95%CI:5.0-12.3)with acute cholecystitis undergoing SA cholecystectomy,one patient will suffer a complication.CONCLUSION Patients with Tokyo Grade 2 acute cholecystitis had more complications and increased hospital charges when undergoing SA cholecystectomy.This data supports a selective approach to SA cholecystectomy for acute cholecystitis. | Christopher P Rice Krishnamurthy B Vaishnavi Celia Chao Daniel Jupiter August B Schaeffer Whitney R Jenson Lance W Griffin William J Mileski | 2019 | World Journal of Gastroenterology2019,25,48: | 8 |
| 12 | Maintenance infliximab for Crohn’s disease: the ACCENT I randomised trial显示文摘 | Stephen B Hanauer Brian G Feagan Gary R Lichtenstein Lloyd F Mayer S Schreiber Jean Frederic Colombel Daniel Rachmilewitz Douglas C Wolf Allan Olson Weihang Bao Paul Rutgeerts | 2002 | The Lancet2002,,9317: | 6 |
| 13 | Human fetal mesenchymal stem cells differentiate into brown and white adipocytes: a role for ERRα in human UCP1 expression显示文摘我们调查了胎儿的间充质的干细胞(fMSCs ) 的能力区分进棕色、白的 adipocytes 并且比较了很多标记基因和关键规章的因素的表示。我们证明关键 adipocyte 管理者和标记的表示在另外的人、鼠科的 adipocyte 模型在区别期间类似于那,包括 PPAR 纬 2 和 FABP4 的正式就职。尤其是,我们发现 preadipocyte 标记, Pref-1,当这个过程继续,显著地在区别然后衰落早被导致,当他们承诺 adipogenic 系,建议 fMSCs 首先获得 preadipocyte 特征,在他们进成熟 adipocytes 的区别以前。在 adipogenic 正式就职以后,某干细胞孤立区分了进类似于棕色的 adipocytes 和其它进白 adipocytes 的房间。一个的详细调查孤立证明新奇棕色的胖决定的因素 PRDM16 在区别前后两个都被表示。重要地,展出的这些房间提高了基础 UCP-1 表示,它依赖于孤儿的活动原子受体犯错伪,加亮一个新奇角色为犯错在人的棕色的脂肪的伪。因此 fMSCs 代表一在 vitro 有用为人的 adipogenesis 当模特儿,并且提供机会在对 adipocyte 系的承诺以前学习阶段。他们也提供无价的卓见进人的棕色的脂肪的特征。 | Daniel L Morganstein Pensee Wu Meritxell R Mane Nick M Fisk Roger White Malcolm G Parker | 2010 | Cell Research2010,20,4: | 5 |
| 14 | Relationship between HER-2 overexpression and brain metastasis in esophageal cancer patients显示文摘AIM:To study if HER-2 overexpression by locally advanced esophageal cancers increase the chance of brain metastasis following esophagectomy.METHODS:We retrospectively reviewed the medical records of esophageal cancer patients who underwent esophagectomy at University of Iowa Hospitals and Clinics between 2000 and 2010.Data analyzed consisted of demographic and clinical variables.The brain metastasis tissue was assayed for HER-2 overexpression utilizing the FDA approved DAKO Hercept Test.RESULTS:One hundred and forty two patients were reviewed.Median age was 64 years(36-86 years).Eighty eight patients(62%) received neoadjuvant chemoradiotherapy.Pathological complete and partial responses were achieved in 17(19%) and 71(81%) patients.Cancer relapsed in 43/142(30%) patients.The brain was the first site of relapse in 9/43 patients(21%,95% CI:10%-36%).HER-2 immunohistochemistry testing of the brain metastasis tissue showed that 5/9(56%) cases overexpressed HER-2(3+ staining).CONCLUSION:HER-2 overexpression might be associated with increased risk of brain metastasis in esophageal cancer patients following esophagectomy.Further studies will be required to validate this observation. | Taher Abu Hejleh Barry R DeYoung Eric Engelman Jeremy M Deutsch Bridget Zimmerman Thorvardur R Halfdanarson Daniel J Berg Kalpaj R Parekh William R Lynch Mark D Iannettoni Sudershan Bhatia Gerald Clamon | 2012 | World Journal of Gastrointestinal Oncology2012,4,5: | 5 |
| 15 | Satisfaction with patient-doctor relationships in inflammatory bowel diseases:Examining patient-initiated change of specialist显示文摘AIM:To assess the reasons for,and factors associated with,patient-initiated changes in treating specialist in inflammatory bowel diseases(IBD).METHODS:Prospectively identified IBD patients(n = 256) with ≥ 1 encounter at a metropolitan hospital were surveyed,including whether they had changed treating specialist and why.Negative reasons included loss of confidence,disagreement,and/or personality clash with the specialist.RESULTS:Of 162 respondents,70(43%) had ever changed specialists;30/70(43%) for negative reasons,52/70(74%) in the preceding year.Patients with negative reasons for changing(n = 30) were younger(median,35.2 years vs 45.3 years),had higher IBD knowledge(median,5.0 years vs 4.0 years),yet had lower medication adherence and satisfaction scores(median,19.0 years vs 22.0 years,14.0 years vs 16.0 years respectively,Mann-Whitney tests,all P < 0.05),compared to all other responders(n = 132).Patients with a recent change(for any reason) were more likely to have Crohn's disease,currently active disease,previous bowel resection and recent hospitalization [OR 2.6,95% CI(1.3-5.4),2.2(1.0-4.7),5.56(1.92-16.67),2.0(1.3-3.0),eachP < 0.05].CONCLUSION:Changing specialist appears associated with patient-related(age,nonadherence) and contemporaneous disease-related factors(recent relapse) which,where modifiable,may enhance patient-doctor relationships and therefore quality of care. | Daniel R van Langenberg Jane M Andrews | 2012 | World Journal of Gastroenterology2012,18,18: | 5 |
| 16 | Time to clinical response and remission for therapeutics in inflammatory bowel diseases: what should the clinician expect, what should patients be told?显示文摘An awareness of the expected time for therapies to induce symptomatic improvement and remission is necessary for determining the timing of follow-up, disease(re)assessment, and the duration to persist with therapies, yet this is seldom reported as an outcome in clinical trials. In this review, we explore the time to clinical response and remission of current therapies for inflammatory bowel disease(IBD) as well as medication, patient and disease related factors that may influence the time to clinical response. It appears that the time to therapeutic response varies depending on the indication for therapy(Crohn's disease or ulcerative colitis). Agents with the most rapid time to clinical response included corticosteroids, calcineurin inhibitors, exclusive enteral nutrition, aminosalicylates and anti-tumor necrosis factor therapy which will work in most patients within the first 2 mo. Vedolizumab,methotrexate and thiopurines had a longer time to clinical response and can take several months to achieve maximal efficacy. Factors affecting the time to clinical response of therapies included use of concomitant therapy, disease duration, smoking status, disease phenotype and advanced age. There appears to be marked variation in time to clinical response for therapies used in IBD which is further influenced by disease and patient related factors. Understanding the expected time to therapeutic response is integral to inform further decision making, maintain a patientcentered approach and ensure treatment is given an appropriate timeframe to achieve maximal benefit prior to cessation. | Abhinav Vasudevan Peter R Gibson Daniel R van Langenberg | 2017 | World Journal of Gastroenterology2017,23,35: | 4 |
| 17 | Comparison of inhaled milrinone, nitric oxide and prostacyclin in acute respiratory distress syndrome显示文摘AIM To evaluate the safety and efficacy of inhaled milrinone in acute respiratory distress syndrome(ARDS).METHODS Open-label prospective cross-over pilot study where fifteen adult patients with hypoxemic failure meeting standard ARDS criteria and monitored with a pulmonary artery catheter were recruited in an academic 24-bed medico-surgical intensive care unit. Random sequential administration of i NO(20 ppm) or nebulized epoprostenol(10 μg/mL) was done in all patients. Thereafter, inhaled milrinone(1 mg/mL) alone followed by inhaled milrinone in association with inhaled nitric oxide(iN O) was administered. A jet nebulization device synchronized with the mechanical ventilation was use to administrate the epoprostenol and the milrinone. Hemodynamic measurements and partial pressure of arterial oxygen(PaO_2) were recorded before and after each inhaled therapyadministration.RESULTS The majority of ARDS were of pulmonary cause(n = 13) and pneumonia(n = 7) was the leading underlying initial disease. Other pulmonary causes of ARDS were: Post cardiopulmonary bypass(n = 2), smoke inhalation injury(n = 1), thoracic trauma and pulmonary contusions(n = 2) and aspiration(n = 1). Two patients had an extra pulmonary cause of ARDS: A polytrauma patient and an intra-abdominal abscess Inhaled nitric oxide, epoprostenol, inhaled milrinone and the combination of inhaled milrinone and i NO had no impact on systemic hemodynamics. No significant adverse events related to study medications were observed. The median increase of PaO 2 from baseline was 8.8 mmH g [interquartile range(IQR) = 16.3], 6.0 mm Hg(IQR = 18.4), 6 mm Hg(IQR = 15.8) and 9.2 mm Hg(IQR = 20.2) respectively with i NO, epoprostenol, inhaled milrinone, and i NO added to milrinone. Only i NO and the combination of inhaled milrinone and i NO had a statistically significant effect on PaO 2. CONCLUSION When comparing the effects of inhaled NO, milrinone and epoprostenol, only NO significantly improved oxygenation. Inhaled milrinone appeared safe but failed to improve oxygenation in ARDS. | Martin Albert Daniel Corsilli David R Williamson Marc Brosseau Patrick Bellemare Stéphane Delisle Anne QN Nguyen France Varin | 2017 | World Journal of Critical Care Medicine2017,6,1: | 4 |
| 18 | 面子研究的传承与嬗变显示文摘从历史演变到当下多视角的热议,面子研究呈现了历史传承性与嬗变性。本文主要从其概念衍生的历史渊源以及研究内容、手段的演变两个方面,对面子研究进行了详实的回溯。在此基础之上,本文从积极面子与消极面子划分之争、特定文化面子问题研究的不足、以及汉语文化特性面子研究的必要性三个方面进行概述,并提出未来研究的新议题、新思路。 | 周凌 Daniel Kádár | 2016 | 外语研究2016,33,3: | 4 |
| 19 | Valgus osteotomy for nonunion and neglected neck of femur fractures显示文摘Nonunion neck of femur can be a difficult problem to treat, particularly in the young, and is associated with high complication rates of avascular necrosis due to the precarious blood supply and poor biomechanics.The various treatment options that have been described can be broadly divided according to the aim of improving either biology or biomechanics. Surgeries aimed at improving the biology, such as vascularized fibula grafting, have good success rates but require high levels of expertise and substantial resources. A popular surgical treatment aimed at improving the biomechanics-valgus intertrochanteric osteotomyoptimizes conditions for fracture healing by converting shear forces across the fracture site into compressive forces. Numerous variations of this surgical procedure have been developed and successfully applied in clinical practice. As a result, the proximal femoral orientation for obtaining a good functional outcome has evolved over the years, and the present concept of altering the proximal femoral anatomy as little as possible has arisen. This technical objective supports attaining union as well as a good functional outcome, since excessive valgus can lead to increased joint reaction forces. This review summarizes the historical and current literature on valgus intertrochanteric osteotomy treatment of nonunion neck of femur, with a focus on factors predictive of good functional outcome and potential pitfalls to be avoided as well as controversies surrounding this procedure. | Viju Daniel Varghese Abel Livingston P R Boopalan Thilak S Jepegnanam | 2016 | World Journal of Orthopedics2016,7,5: | 4 |
| 20 | Coexpression of receptor-tyrosine-kinases in gastric adenocarcinoma-a rationale for a molecular targeting strategy?显示文摘AIM: To define the (co-)expression pattern of target receptor-tyrosine-kinases (RTK) in human gastric adenocarcinoma. METHODS: The (co-)expression pattern of VEGFR1-3,PDGFRα/b and EGFR1 was analyzed by RT-PCR in 51 human gastric adenocarcinomas. In addition,IHC staining was applied for confirmation of expression and analysis of RTK localisation. RESULTS: The majority of samples revealed a VEGFR1 (98%),VEGFR2 (80%),VEGFR3 (67%),PDGFRα (82%) and PDGFRβ(82%) expression,whereas only 62% exhibited an EGFR1 expression. 78% of cancers expressed at least four out of six RTKs. While VEGFR1-3 and PDGFRα revealed a predominantly cytoplasmatic staining in tumor cells,accompanied by an additional nuclear staining for VEGFR3 ,EGFR1 was almost exclusively detected on the membrane of tumor cells. PDGFRβ was restricted to stromal pericytes,which also depicted a PDGFRα expression.receptor-tyrosine-kinases coexpression in gastric adenocarcinoma and might therefore encourage an application of multiple-target RTK-inhibitors within a combination therapy. | Daniel Drescher Markus Moehler Ines Gockel Kirsten Frerichs Annett Müller Friedrich Dünschede Thomas Borschitz Stefan Biesterfeld Martin Holtmann Thomas Wehler Andreas Teufel Kerstin Herzer Thomas Fischer Martin R Berger Theodor Junginger Peter R Galle Carl C Schimanski | 2007 | World Journal of Gastroenterology2007,13,26: | 4 |