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1Pathophysiological 角色和在糖尿病的 nephropathy 的发炎的治疗学的含意显示文摘 Diabetes mellitus and its complications are becoming one of the most important health problems in the world. Diabetic nephropathy is now the main cause of end-stage renal disease. The mechanisms leading tothe development and progression of renal injury are not well known. Therefore, it is very important to f ind new pathogenic pathways to provide opportunities for early diagnosis and targets for novel treatments. At the present time, we know that activation of innate immunity with development of a chronic low grade inflammatory response is a recognized factor in the pathogenesis of diabetic nephropathy. Numerous experimental and clinical studies have shown the participation of different inflammatory molecules and pathways in the pathophysiology of this complication.Desirée Luis-Rodríguez Alberto Martínez-Castelao José Luis Górriz Fernando de lvaro Juan F Navarro-González 2012World Journal of Diabetes2012,3,1:55
2帕博利珠单抗联合以铂类为基础的化疗治疗非小细胞肺癌合并稳定性脑转移患者的结局:KEYNOTE-021、-189和-407研究的汇总分析显示文摘背景与目的此项探索性分析回顾评价了晚期非小细胞肺癌(non-small cell lung cancer,NSCLC)患者的结局,旨在确定基线时合并脑转移是否会影响一线应用帕博利珠单抗联合化疗(pembrolizumab plus chemotherapy,PC)比对单用化疗的疗效。患者和方法对KEYNOTE-021队列G(非鳞癌)、KEYNOTE-189(非鳞癌)和KEYNOTE-407(鳞癌)三项研究晚期NSCLC患者的数据进行汇总分析。患者接受含铂两药化疗和/或35个周期帕博利珠单抗治疗(每3周200 mg)。所有研究均纳入了经治或初治的稳定性脑转移患者(KEYNOTE-189与KEYNOTE-407研究纳入初治脑转移患者)。经治的脑转移患者已处于病情稳定的状态≥2周(KEYNOTE-021队列G患者≥4周),无新发或脑转移病灶扩大的证据且入组前至少3天以上未使用激素。初治的无症状脑转移患者需定期接受脑部影像学检查。结果共纳入1298例患者,其中171例有基线脑转移,1127例无脑转移。两组的中位随访时间(范围)在数据截止时分别为10.9(0.1-35.1)个月和11.0(0.1-34.9)个月。合并脑转移和无脑转移患者的总生存期[0.48(95%CI:0.32-0.70)和0.63(95%CI:0.53-0.75)]和无进展生存期[0.44(95%CI:0.31-0.62)和0.55(95%CI:0.48-0.63)]的风险比(PC/化疗)相似。合并脑转移的患者中,PC组和单用化疗组患者的中位总生存期分别为18.8个月和7.6个月,中位无进展生存期分别为6.9个月和4.1个月。无论是否合并脑转移,PC组患者的客观缓解率都高于单用化疗组,且缓解持续时间有显著延长。合并脑转移的患者中,PC组与单用化疗组的治疗相关不良事件发生率分别为88.2%和82.8%;而无脑转移的患者中,两组治疗相关不良事件的发生率分别为94.5%和90.6%。结论无论是否合并脑转移,与单用化疗相比,帕博利珠单抗联合以铂类为基础的组织学特异性化疗可改善所有PD-L1亚组的临床结局,其中包括PD-L1肿瘤比例评分<1%的患者,并且在晚期NSCLC患者中安全性良好。该方案是晚期NSCLC初治患者的标准方案,并可用于合并稳定性脑转移的患者。周清(翻译校对) Steven F Powell Delvys Rodríguez-Abreu Corey J Langer Ali Tafreshi Luis Paz-Ares Hans-Georg Kopp Jeronimo Rodríguez-Cid Dariusz M Kowalski Ying Cheng Takayasu Kurata Mark M Awad Jinaxin Lin Bin Zhao M Catherine Pietanza Bilal Piperdi Marina C Garassino 2022中国肺癌杂志2022,25,1:6
3An experimental validation of genomic selection in octoploid strawberry显示文摘The primary goal of genomic selection is to increase genetic gains for complex traits by predicting performance of individuals for which phenotypic data are not available.The objective of this study was to experimentally evaluate the potential of genomic selection in strawberry breeding and to define a strategy for its implementation.Four clonally replicated field trials,two in each of 2 years comprised of a total of 1628 individuals,were established in 2013–2014 and 2014–2015.Five complex yield and fruit quality traits with moderate to low heritability were assessed in each trial.High-density genotyping was performed with the Affymetrix Axiom IStraw90 single-nucleotide polymorphism array,and 17479 polymorphic markers were chosen for analysis.Several methods were compared,including Genomic BLUP,Bayes B,Bayes C,Bayesian LASSO Regression,Bayesian Ridge Regression and Reproducing Kernel Hilbert Spaces.Cross-validation within training populations resulted in higher values than for true validations across trials.For true validations,Bayes B gave the highest predictive abilities on average and also the highest selection efficiencies,particularly for yield traits that were the lowest heritability traits.Selection efficiencies using Bayes B for parent selection ranged from 74%for average fruit weight to 34%for early marketable yield.A breeding strategy is proposed in which advanced selection trials are utilized as training populations and in which genomic selection can reduce the breeding cycle from 3 to 2 years for a subset of untested parents based on their predicted genomic breeding values.Salvador A Gezan Luis F Osorio Sujeet Verma Vance M Whitaker 2017Horticulture Research2017,4,1:6
4pRB expression in esophageal mucosa of individuals at high risk for squamous cell carcinoma of the esophagus显示文摘AIM: To investigate the pRb expression in a large group of patients with history of chronic exposure to the main risk factors for development of squamous cell carcinoma of the esophagus. METHODS: One hundred and seventy asymptomatic individuals at high risk for esophageal squamous cell carcinoma (consumption of more than 80 g of ethanol and 10 cigarettes/d for at least 10 years) underwent upper gastrointestinal endoscopy with biopsies of the esophageal mucosa. As a control group, specimens of esophageal mucosa obtained from 20 healthy subjects were also studied. Immunohistochemical assessment of the tissues was performed using a monoclonal antibody anti-pRB protein. RESULTS: Absence of the pRB staining, indicating loss of RB function, was observed in 33 (19.4%) of the individuals at risk for esophageal cancer, but in none of the healthy controls (P < 0.02). Loss of pRb expression increased in a stepwise fashion according to the severity of the histological findings (P < 0.005): normal mucosa (11/97 or 11.3%), chronic esophagitis (17/60 or 28.3%), low-grade dysplasia (3/10 or 30%), high-grade dysplasia 1/2 or 50%) and squamous cell carcinoma (1/1 or 100%). CONCLUSION: Our findings suggest that abnormal expression of the pRB protein may be implicated in the process of esophageal carcinogenesis. Additional studies are warranted to define the role of the pRBprotein as a biomarker for development of esophageal squamous cell carcinoma in individuals at high risk for this malignancy.Simone S Contu Paulo C Contu Daniel C Damin Renato B Fagundes Fabiano Bevilacqua Aline S Rosa Joo C Prolla Luis F Moreira 2007World Journal of Gastroenterology2007,13,11:5
5Role of the HLA-DQ locus in the development of chronic gastritis and gastric carcinoma in Mexican patients显示文摘AIM: To determine the HLA-DQ locus in Mexican patients with Chronic gastritis and gastric adenocarcinoma. METHODS: Oligotyping for HLA-DQ locus was performed in 45 Mexican patients with chronic gastritis and 13 Mexican patients with diffuse-type gastric adenocarcinoma, and was then compared with 99 clinically healthy unrelated individuals. H pylori infection and CagA status were assessed in patients by enzyme-linked immunosor-bent assay (ELISA) method. RESULTS: We found a significant increased frequency of HLA-DQB1*0401 allele in H pylori-positive patients with chronic gastritis when compared with healthy subjects [19 vs 0%, P= 1 × 10-7, odds ratio (OR) = 4.96; 95% confidence interval (95% CI), 3.87-6.35]. We also found a significant increased frequency of HLA-DQB1*0501 in patients with diffuse-type gastric carcinoma in comparison with healthy individuals (P = 1 × 10-6, OR = 13.07; 95% CI, 2.82-85.14). CONCLUSION: HLA-DQ locus may play a different role in the development of H pylori-related chronic gastritis and diffuse-type gastric adenocarcinoma in the Mexican Mestizo population.Roberto Herrera-Goepfert Jesús K Yamamoto-Furusho Luis F Oate-Ocaa Margarita Camorlinga-Ponce Leopoldo Muoz Jorge A Ruiz-Morales Gilberto Vargas-Alarcón Julio Granados Cellular Biology Section 2006World Journal of Gastroenterology2006,12,48:4
6Phosphorus fractions and sorption dynamics in the sediments of two Ca-SO4 water reservoirs in the central Argentine Andes显示文摘Phosphorus(P) fractionation and sorption behavior were studied in the sediments of two calcium-sulfate(Ca-SO_4: Ca^(2+)170 mg L^(-1); SO_4^(2-) 400 mg L^(-1)) water reservoirs in the southern central Argentine Andes-El Carrizal Reservoir(ECR),which stratifies in summer and El Nihuil Reservoir(ENR),which is vertically mixed throughout the year. Sediment size classes reflected the lithology of both basins and the reservoirs relative location: ECR(downstream from a valley adjacent to a mountain environment) had higher clay proportions while the sand fraction was more important in ENR(just next to a mountain environment).In both reservoirs, the chemical composition revealed low alteration and calcium enrichment. Total P content was relatively high(1.1-1.6 mg P kg^(-1) dry weight) as expected from the contribution of marine formations. P fractionation was dominated by Ca-P(ECR, 69% and ENR, 63%) followed by organic-P(23%)in summer-anoxic ECR and by iron/aluminum(Fe/Al)-P(27%) in oxic ENR. Batch experiments showed that sorption behavior in ECR had a typical Langmuir isotherm plot while in ENR that model fitted only at low dissolved P values(<5 mg PL^(-1)) and co-precipitation evidence was observed at higher P concentrations. It is proposed that lower Fe/Al-P content in anoxic(ECR) vs. oxic(ENR) sediments results from the P released from iron-bound phosphorus due to sulfate reduction-ferrous sulfide formation in an anoxic environment. This condition should enable ECR sediments to adsorb P into fresh oxidized iron,and ENR sediments to co-precipitate P with calcium due to Fe/Al-P saturation, as observed in batch experiments. This paper constitutes the first description of phosphorus content and dynamics in reservoir sediments in arid central western Argentina, where water sulfate concentrations are naturally high due to basin lithology.José Gabriel León Fernando Luis Pedrozo Pedro Félix Temporetti 2017International Journal of Sediment Research2017,32,3:3
7Malnutrition negatively impacts the quality of life of patients with cirrhosis: An observational study显示文摘AIM To verify how malnutrition is related to health-related quality of life(HRQL) impairment in patients with cirrhosis.METHODS Data was retrospectively abstracted from medical records and obtained by direct interview. We included patients with cirrhosis from any etiology, evaluated at the Liver Clinic from Gastroenterology Department in a tertiary healthcare center, from June 2014 to June 2016. Child-Pugh score, data about complications, and demographic, clinical and anthropometric characteristics of patients were obtained. Nutritional status was evaluated by the Subjective Global Assessment(SGA). HRQL was evaluated through the Chronic Liver Disease Questionnaire. Patients were requested to assess their global HRQL with the following code: 0 = impairment of HRQL, when it was compared with other healthy subjects; 1 = good HRQL, if it was similar to the quality of life of other healthy subjects. To compare the primary outcome between malnourished and well-nourished groups, the χ~2 test, Fisher's exact test or Student's t-test were used, based on the variable type. Associations between predictor variables and deterioration of HRQL were determined by calculating the hazard ratio and 95% confidence interval using Cox proportional hazards regression. RESULTS A total of 127 patients with cirrhosis were included, and the mean age was 54.1 ± 12.3 years-old. According to Child-Pugh scoring, 25(19.7%) were classified as A(compensated), 76(59.8%) as B, and 26(20.5%) as C(B/C = decompensated). According to SGA, 58(45.7%) patients were classified as well-nourished. Sixty-nine patients identified HRQL as good, and 76 patients(59.8%) perceived impairment of their HRQL. Multivariate analysis to determine associations between predictor variables and self-perception of an impairment of HRQL found strong association with malnutrition(P < 0.0001). The most important impaired characteristics in malnourished patients were: Presence of body pain, dyspnea on exertion with daily activities, decreased appetite, generalized weakness, trouble lifting or carrying heavy objects, and decreased level of energy(P < 0.0001).CONCLUSION Malnutrition is a key factor related to impairment of HRQL in patients with cirrhosis.Gabriela Rojas-Loureiro Alfredo Servín-Caamano Elizabeth Pérez-Reyes Luis Servín-Abad Fátima Higuerade la Tijera 2017World Journal of Hepatology2017,9,5:3
8Methylation of DAPK and THBS1 genes in esophageal gastric-type columnar metaplasia显示文摘AIM: To explore methylation of DAPK, THBS1, CDH-1, and p14 genes, and Helicobacter pylori(H. pylori) status in individuals harboring esophageal columnar metaplasia.METHODS: Distal esophageal mucosal samples obtained by endoscopy and histologically diagnosed as gastric-type(non-specialized) columnar metaplasia, were studied thoroughly. DNA was extracted from paraffin blocks, and methylation status of deathassociated protein kinase(DAPK), thrombospondin-1(THBS1), cadherin-1(CDH1), and p14 genes, was examined using a methyl-sensitive polymerase chain reaction(MS-PCR) and sodium bisulfite modification protocol. H. pylori cag A status was determined by PCR.RESULTS: In total, 68 subjects(33 females and 35 males), with a mean age of 52 years, were included. H. pylori cag A positive was present in the esophageal gastric-type metaplastic mucosa of 18 individuals. DAPK, THSB1, CDH1, and p14 gene promoters were methylated by MS-PCR in 40(58.8%), 33(48.5%), 46(67.6%), and 23(33.8%) cases of the 68 esophageal samples. H. pyloristatus was associated with methylation of DAPK(P = 0.003) and THBS1(P = 0.019).CONCLUSION: DNA methylation occurs in cases of gastric-type(non-specialized) columnar metaplasia of the esophagus, and this modification is associated with H. pylori cag A positive infection.Roberto Herrera-Goepfert Luis F Onate-Ocana José Luis Mosqueda-Vargas Luis A Herrera Clementina Castro Julia Mendoza Rodrigo González-Barrios 2016World Journal of Gastroenterology2016,22,18:3
9A family study of endophenotypes for psychosis within an early intervention programme in Hong Kong: Rationale and preliminary findings显示文摘The study of endophenotypes may be a viable strategy to tackle the genetic complexity and phenotypic heterogeneity of psychosis, but this research direction is relatively under-developed in China as compared to Western countries. We have recently initiated one of the first family studies of endophenotypes for psychosis in China. Patients entering an established early psychosis intervention service are recruited into this research project for phenotyping, endophenotyping and genotyping. At the endophenotypic level, four domains (neurological soft signs, neurocognition of prospective memory, social cognition of facial emotion recognition, and affective cognition of anticipatory and consummatory pleasure) are studied in the sample of patients with psychosis and their unaffected siblings. This article illustrates the benefit of a research-oriented clinical programme and its findings based on the data collected as of early 2011.LUI Simon S Y SHAM Pak CHAN Raymond C K CHEUNG Eric F C 2011Chinese Science Bulletin2011,56,32:2
10Posttreatment of a brewery wastewater using a sequencing batch reactor 显示文摘Rordrigues Ana C Brito Antonio G Melo Luis F 2001Water Environment Research2001,73,1:2
11Progress and challenges in the comprehensive management of chronic viral hepatitis: Key ways to achieve the elimination显示文摘Chronic viral hepatitis is a significant health problem throughout the world,which already represents high annual mortality.By 2040,chronic viral hepatitis due to virus B and virus C and their complications cirrhosis and hepatocellular carcinoma will be more deadly than malaria,vitellogenesis-inhibiting hormone,and tuberculosis altogether.In this review,we analyze the global impact of chronic viral hepatitis with a focus on the most vulnerable groups,the goals set by the World Health Organization for the year 2030,and the key points to achieve them,such as timely access to antiviral treatment of direct-acting antiviral,which represents the key to achieving hepatitis C virus elimination.Likewise,we review the strategies to prevent transmission and achieve control of hepatitis B virus.Finally,we address the impact that the coronavirus disease 2019 pandemic has had on implementing elimination strategies and the advantages of implementing telemedicine programs.Fátima Higuera-de la Tijera Alfredo Servín-Caamaño Luis Servín-Abad 2021World Journal of Gastroenterology2021,27,26:2
12Mechanisms of fibrinolysis resistance and potential targets for thrombolysis in acute ischaemic stroke: lessons from retrieved stroke emboli显示文摘There has been growing interest and insight into the histological composition of retrieved stroke emboli.One of the main focuses of the stroke clot analysis literature has been the implications of clot composition on mechanical thrombectomy procedures.However,the holy grail of clot analysis may not be in the field of clot-device interaction,but rather,in understanding mechanisms of fibrinolysis resistance.The mechanisms underlying the low response to fibrinolytic therapy,even with the newer,more powerful agents,remain poorly understood.While factors such as embolus size,location and collateral status influence alteplase delivery and recanalisation rates;compositional analyses focused on histological and ultrastructural characteristics offer unique insights into mechanisms of alteplase resistance.In this review,we strive to provide comprehensive review of current knowledge on clot composition and ultrastructural analyses that help explain resistance to fibrinolysis.Waleed Brinjikji Oana Madalina Mereuta Daying Dai David F Kallmes Luis Savastano Yang Liu Shahid M Nimjee Raul G Nogueira Mehdi Abbasi Ramanathan Kadirvel 2021Stroke & Vascular Neurology2021,6,4:2
13Dendritic cell deficiencies persist seven months after SARS-CoV-2 infection显示文摘Severe Acute Respiratory Syndrome Coronavirus(SARS-CoV)-2 infection induces an exacerbated inflammation driven by innate immunity components.Dendritic cells(DCs)play a key role in the defense against viral infections,for instance plasmacytoid DCs(pDCs),have the capacity to produce vast amounts of interferon-alpha(IFN-α).In COVID-19 there is a deficit in DC numbers and IFN-αproduction,which has been associated with disease severity.In this work,we described that in addition to the DC deficiency,several DC activation and homing markers were altered in acute COVID-19 patients,which were associated with multiple inflammatory markers.Remarkably,previously hospitalized and nonhospitalized patients remained with decreased numbers of CD1c+myeloid DCs and pDCs seven months after SARS-CoV-2 infection.Moreover,the expression of DC markers such as CD86 and CD4 were only restored in previously nonhospitalized patients,while no restoration of integrinβ7 and indoleamine 2,3-dyoxigenase(IDO)levels were observed.These findings contribute to a better understanding of the immunological sequelae of COVID-19.Alberto Pérez-Gómez Joana Vitallé Carmen Gasca-Capote Alicia Gutierrez-Valencia María Trujillo-Rodriguez Ana Serna-Gallego Esperanza Muñoz-Muela María de los Reyes Jiménez-Leon Mohamed Rafii-El-Idrissi Benhnia Inmaculada Rivas-Jeremias Cesar Sotomayor Cristina Roca-Oporto Nuria Espinosa Carmen Infante-Domínguez Juan Carlos Crespo-Rivas Alberto Fernández-Villar Alexandre Pérez-González Luis Fernando López-Cortés Eva Poveda Ezequiel Ruiz-Mateos JoséMiguel Cisneros Sonsoles Salto-Alejandre Judith Berastegui-Cabrera Pedro Camacho-Martínez Carmen Infante-Domínguez Marta Carretero-Ledesma Juan Carlos Crespo-Rivas Eduardo Márquez JoséManuel Lomas Claudio Bueno Rosario Amaya JoséAntonio Lepe Jerónimo Pachón Elisa Cordero Javier Sánchez-Céspedes Manuela Aguilar-Guisado Almudena Aguilera Clara Aguilera Teresa Aldabo-Pallas Verónica Alfaro-Lara Cristina Amodeo Javier Ampuero María Dolores Avilés Maribel Asensio Bosco Barón-Franco Lydia Barrera-Pulido Rafael Bellido-Alba Máximo Bernabeu-Wittel Candela Caballero-Eraso Macarena Cabrera Enrique Calderón Jesús Carbajal-Guerrero Manuela Cid-Cumplido Yael Corcia-Palomo Juan Delgado Antonio Domínguez-Petit Alejandro Deniz Reginal Dusseck-Brutus Ana Escoresca-Ortega Fátima Espinosa Nuria Espinosa Michelle Espinoza Carmen Ferrándiz-Millón Marta Ferrer Teresa Ferrer Ignacio Gallego-Texeira Rosa Gámez-Mancera Emilio García Horacio García-Delgado Manuel García-Gutiérrez María Luisa Gascón-Castillo Aurora González-Estrada Demetrio González Carmen Gómez-González Rocío González-León Carmen Grande-Cabrerizo Sonia Gutiérrez Carlos Hernández-Quiles Inmaculada Concepción Herrera-Melero Marta Herrero-Romero Luis Jara Carlos Jiménez-Juan Silvia Jiménez-Jorge Mercedes Jiménez-Sánchez Julia Lanseros-Tenllado Carmina López Isabel López Álvaro López-Barrios Luis F.López-Cortés Rafael Luque-Márquez Daniel Macías-García Guillermo Martín-Gutiérrez Luis Martín-Villén JoséMolina Aurora Morillo María Dolores Navarro-Amuedo Dolores Nieto-Martín Francisco Ortega María Paniagua-García Amelia Peña-Rodríguez Esther Pérez Manuel Poyato Julia Praena-Segovia Rafaela Ríos Cristina Roca-Oporto Jesús F.Rodríguez María Jesús Rodríguez-Hernández Santiago Rodríguez-Suárez Ángel Rodríguez-Villodres Nieves Romero-Rodríguez Ricardo Ruiz Zida Ruiz de Azua Celia Salamanca Sonia Sánchez Víctor Manuel Sánchez-Montagut César Sotomayor Alejandro Suárez Benjumea Javier Toral 2021Cellular & Molecular Immunology2021,18,9:2
14Prognostic value of endothelial dysfunction in type 1 diabetes mellitus显示文摘Patients with diabetes mellitus are at high risk of developing atherosclerosis, associated with higher rates of micro and macro vascular involvement such as coronary artery disease and renal disease. The role of hyperglycemia to induce synthesis of reactive oxygen species by the oxidation of glucose, leading to an increased production of advanced glycosylation end products, as well as inflammation and oxidative stress has been proposed as a possible mechanism in the pathogenesis of endothelial dysfunction(ED). The interaction between C-peptide- the connecting segment of pro-insulin-and nitric oxide in vasodilation is also discussed. Therefore, endothelial dysfunction has been identified as an early marker of vascular disorder in type 1 and type 2 diabetes mellitus. In some other diseases, ED has been considered an independent predictor of vascular disease, regardless of the method used. Studies have demonstrated the importance of endothelial dysfunction as an useful tool for identifying the risk of vascular complications in patients with type 1 diabetes mellitus, particularly as regards to renal impairment. The aim of this review is to clarify the prognostic value of endothelial dysfunction as a marker of vascular disease in these subjects.Ana Marice Ladeia Raphael Ribeiro Sampaio Maiara CostaHita Luis F Adan 2014World Journal of Diabetes2014,5,5:2
15Current trends of liver cirrhosis in Mexico: Similitudes and differences with other world regions显示文摘AIM To investigate the main current etiologies of cirrhosis in Mexico.METHODS We performed a cross-sectional retrospective multicenter study that included eight hospitals in different areas of Mexico. These hospitals provide health care to people of diverse social classes. The inclusion criteria were a histological, clinical, biochemical, endoscopic, or imaging diagnosis of liver cirrhosis. Data were obtained during a 5-year period(January 2012-December 2017). RESULTS A total of 1210 patients were included. The mean age was 62.5 years(SD = 12.1), and the percentages of men and women were similar(52.0% vs 48.0%). The most frequent causes of liver cirrhosis were hepatitis C virus(HCV)(36.2%), alcoholic liver disease(ALD)(31.2%), and nonalcoholic steatohepatitis(23.2%), and the least frequent were hepatitis B virus(1.1%), autoimmune disorders(7.3%), and other conditions(1.0%).CONCLUSION HCV and ALD are the most frequent causes of cirrhosis in Mexico. However, we note that non-alcoholic fatty liver disease(NAFLD) as an etiology of cirrhosis increased by 100% compared with the rate noted previously. We conclude that NAFLD will soon become one of the most frequent etiologies of liver cirrhosis in Mexico.Nahum Méndez-Sánchez Felipe Zamarripa-Dorsey Arturo Panduro Emma Purón-González Edgar Ulises Coronado-Alejandro Carlos Alejandro Cortez-Hernández Fátima Higuera de la Tijera José Luis Pérez-Hernández Eira Cerda-Reyes Heriberto Rodríguez-Hernández Vania César Cruz-Ramón Oscar Lenin Ramírez-Pérez Nancy Edith Aguilar-Olivos Olga Fabiola Rodríguez-Martínez Samantha Cabrera-Palma Guillermo Cabrera-álvarez 2018World Journal of Clinical Cases2018,6,15:2
16Impact of formal training in endoscopic submucosal dissection for early gastrointestinal cancer: A systematic review and a meta-analysis显示文摘AIM: To summarize the clinical impact of a formal training for the effectiveness and safety of endoscopic submucosal dissection for gastrointestinal cancer.METHODS: We searched databases including PubM ed, EMBASE and the Cochrane Library and Science citation Index updated to August 2014 to include eligible articles. In the Meta-analysis, the main outcome measurements were en bloc resection rate, local recurrence rate(R0) and the incidence of procedure-related complications(perforation, bleeding). RESULTS: En bloc resection was high for both, dissecting stomach tumors with an overall percentage of 93.2%(95%CI: 90.5-95.8) and dissecting colorectal tumors with an overall percentage of 89.4%(95%CI: 85.1-93.7). Although the number of studies reporting R0 resection(the dissected specimen was revealed free of tumor in both vertical and lateral margins) was small, the overall estimates for R0 resection were 81.4%(95%CI: 72-90.8) for stomach and 85.9%(95%CI: 77.5-95.5) for colorectal tumors, respectively. The analysis showed that the percentage of immediate perforation and bleeding were very low; 4.96(95%CI: 3.6-6.3) and 1.4%(95%CI: 0.8-1.9) for colorectal tumors and 3.1%(95%CI: 2.0-4.1) and 4.8%(95%CI: 2.8-6.7) for stomach tumors, respectively. CONCLUSION: In order to obtain the same rate of success of the analyzed studies it is a necessity to create training centers in the western countries during the 'several years' of gastroenterology residence first only to teach EGC diagnose and second only to train endoscopic submucosal dissection.Miguel A Tanimoto M Lourdes Guerrero Yoshinori Morita Jonathan Aguirre-Valadez Elisa Gomez Carlos Moctezuma-Velazquez Jose A Estradas-Trujillo Miguel A Valdovinos Luis F Uscanga Rikiya Fujita 2015World Journal of Gastrointestinal Endoscopy2015,7,4:2
17Software Project Management Approaches for Global Software Development: A Systematic Mapping Study显示文摘Global Software Development(GSD) is a well established field of software engineering with the benefits of a global environment. Software Project Management(SPM) plays a key role in the success of GSD. As a result, the need has arisen to study and evaluate the downsides of SPM for GSD, to thereby pave the way for the development of new methods, techniques, and tools with which to tackle them. This paper aims to identify and classify research on SPM approaches for GSD that are available in the literature, to identify their current weaknesses and strengths, and to analyze their applications in industry. We performed a Systematic Mapping Study(SMS) based on six classification criteria. Eighty-four papers were selected and analyzed. The results indicate that interest in SPM for GSD has been increasing since 2006. As a class of approaches, the most frequently reported methods(40%) are those used for coordination, planning, and monitoring, along with estimation techniques that can be used to better match a distributed project. SPM for GSD requires further investigation by researchers and practitioners, particularly with respect to cost and time estimations. These findings will help overcome the challenges that must to be considered in future SPM research for GSD, especially regarding collaboration and time-zone differences.Manal El Bajta Ali Idri Joaquín Nicolás Ros José Luis Fernández-Alemán Juan Manuel Carrillo de Gea Félix García Ambrosio Toval 2018Tsinghua Science and Technology2018,23,6:2
18Resonant vibration behavior of Sn-Zn-Ag solder alloys显示文摘Song J M Lui T S Lan G F 2004Journal of Alloys and Compounds2004,379,12:1
19Analysis and behaviour of flexibly-jointed frames显示文摘Lui E M Chen W F 1986Engineering Structure1986,8,4:1
20Production of 6-aminopenicillanic acid in aqueous two-phase systems by recombinant Escherichia coli with intracellular penicillin acylase显示文摘Cao X J Wu X Y Luis J P F 2004Biotechnology Letters2004,26,:1
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