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793篇 您的检索式:作者名="de Mello"
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1Epidermal growth factor receptor and K-Ras in non-small cell lung cancer-molecular pathways involved and targeted therapies显示文摘Lung cancer is currently the leading cause of cancer death in Western nations.Non-small cell lung cancer(NSCLC)represents 80%of all lung cancers,and adenocarcinoma is the predominant histological type.Despite the intensive research carried out on this field and therapeutic advances,the overall prognosis of these patients remains unsatisfactory,with a 5-year overall survival rate of less than 15%.Nowadays,pharmacogenetics and pharmacogenomics represent the key to successful treatment.Recent studies suggest the existence of two distinct molecular pathways in the carcinogenesis of lung adenocarcinoma:one associated with smoking and activation of the K-Ras oncogene and the other not associated with smoking and activation of the epidermal growth factor receptor(EGFR).The K-ras mutation is mainly responsible for primary resistance to new molecules which inhibit tyrosine kinase EGFR(erlotinib and gefitinib)and most of the EGFR mutations are responsible for increased tumor sensitivity to these drugs.This article aims to conduct a systematic review of the literature regarding the molecular pathways involving the EGFR,K-Ras and EGFR targeted therapies in NSCLC tumor behavior.Ramon Andrade de Mello Dania Sofia Marques Rui Medeiros António MF Araújo 2011World Journal of Clinical Oncology2011,2,11:16
2Role of mi RNAs and their potential to be useful as diagnostic and prognostic biomarkers in gastric cancer显示文摘Alterations in epigenetic control of gene expression play an important role in many diseases, including gastric cancer. Many studies have identified a large number of upregulated oncogenic mi RNAs and downregulated tumour-suppressor mi RNAs in this type of cancer. In this review, we provide an overview of the role of mi RNAs, pointing to their potential to be useful as diagnostic and/or prognostic biomarkers in gastric cancer. Moreover, we discuss the influence of polymorphisms and epigenetic modifications on mi RNA activity.Kelly Cristina da Silva Oliveira Taíssa Maíra Thomaz Araújo Camila Inagaki Albuquerque Gabriela Alcantara Barata Carolina Oliveira Gigek Mariana Ferreira Leal Fernanda Wisnieski Fernando Augusto Rodrigues Mello Junior André Salim Khayat Paulo Pimentel de Assumpcao Rommel Mário Rodriguez Burbano Marília Cardoso Smith Danielle Queiroz Calcagno 2016World Journal of Gastroenterology2016,22,35:11
3Liver transplantation and alcoholic liver disease:History,controversies,and considerations显示文摘Alcohol consumption accounts for 3.8% of annual global mortality worldwide, and the majority of these deaths are due to alcoholic liver disease(ALD), mainly alcoholic cirrhosis. ALD is one of the most common indications for liver transplantation(LT). However, it remains a complicated topic on both medical and ethical grounds, as it is seen by many as a 'self-inflicted disease'. One of the strongest ethical arguments against LT for ALD is the probability of relapse. However, ALD remains a common indication for LT worldwide. For a patient to be placed on an LT waiting list, 6 mo of abstinence must have been achieved for most LT centers. However, this '6-mo rule' is an arbitrary threshold and has never been shown to affect survival, sobriety, or other outcomes. Recent studies have shown similar survival rates among individuals who undergo LT for ALD and those who undergo LT for other chronic causes of end-stage liver disease. There are specific factors that should be addressed when evaluating LT patients with ALD because these patients commonly have a high prevalence of multisystem alcohol-related changes. Risk factors for relapse include the presence of anxiety or depressive disorders, short pre-LT duration of sobriety, and lack of social support. Identification of risk factors and strengthening of the social support system may decrease relapse among these patients. Family counseling for LT candidates is highly encouraged to prevent alcohol consumption relapse. Relapse has been associated with unique histopathological changes, graft damage, graft loss, and even decreased survival in some studies. Research has demonstrated the importance of a multidisciplinary evaluation of LT candidates. Complete abstinence should be attempted to overcome addiction issues and to allow spontaneous liver recovery. Abstinence is the cornerstone of ALD therapy. Psychotherapies, including 12-step facilitation therapy, cognitive-behavioral therapy, and motivational enhancement therapy, help support abstinence. Nutritional therapy helps to reverse muscle wasting, weight loss, vitamin deficiencies, and trace element deficiencies associated with ALD. For muscular recovery, supervised physical activity has been shown to lead to a gain in muscle mass and improvement of functional activity. Early LT for acute alcoholic hepatitis has been the subject of recent clinical studies, with encouraging results in highly selected patients. The survival rates after LT for ALD are comparable to those of patients who underwent LT for other indications. Patients that undergo LT for ALD and survive over 5 years have a higher risk of cardiorespiratory disease, cerebrovascular events, and de novo malignancy.Claudio Augusto Marroni Alfeu de Medeiros Fleck Jr Sabrina Alves Fernandes Lucas Homercher Galant Marcos Mucenic Mario Henrique de Mattos Meine Guilherme Mariante-Neto Ajacio Bandeira de Mello Brandao 2018World Journal of Gastroenterology2018,24,26:7
4HER2 therapies and gastric cancer:A step forward显示文摘Gastric cancer usually is diagnosed in advanced stages and thus current medical practice affords limited therapeutic options.However,recent studies established the role of human epidermal growth factor receptor 2(HER2)in clinical management.Trastuzumab,an antiHER2 monoclonal antibody,acquired a main role in advanced gastric cancer harboring HER2 overexpression and/or amplification improving survival to 17.1 mo according to trastuzumab for gastric cancer phaseⅢtrial results.Also,new promising drugs,such as c-Met inhibitors,are in development and assessment for this setting.Certainly,novel drugs will emerge in the next feel years for help oncologists improve clinical management of advanced gastric cancer providing higher survival and quality of life.In this mini-review we will discuss some issues in this regard and provide an actual overview of this setting.Ramon Andrade de Mello Andrea Marin Marques António Araújo 2013World Journal of Gastroenterology2013,19,37:7
5Personalizing therapies for gastric cancer: Molecular mechanisms and novel targeted therapies显示文摘Globally,gastric cancer is the 4thmost frequently diagnosed cancer and the 2ndleading cause of death from cancer,with an estimated 990000 new cases and738000 deaths registered in 2008.In the advanced setting,standard chemotherapies protocols acquired an important role since last decades in prolong survival.Moreover,recent advances in molecular therapies provided a new interesting weapon to treat advanced gastric cancer through anti-human epidermal growth factor receptor 2(HER2)therapies.Trastuzumab,an anti-HER2 monoclonal antibody,was the first target drug in the metastatic setting that showed benefit in overall survival when in association with platinum-5-fluorouracil based chemotherapy.Further,HER2 overexpression analysis acquired a main role in predict response for trastuzumab in this field.Thus,we conducted a review that will discuss the main points concerning trastuzumab and HER2 in gastric cancer,providing a comprehensive overview of molecular mechanisms and novel trials involved.Michael Luis Ana Tavares Liliana S Carvalho Lúcio Lara-Santos António Araújo Ramon Andrade de Mello 2013World Journal of Gastroenterology2013,19,38:6
6应用增爬群改善大雨条件下800 kV叠锥型支柱绝缘子的雨闪性能(英文)显示文摘Studies based on AC high voltage tests have been done at Cepel to investigate the performance of 800 kV busbar insulators under heavy wetting conditions.Insulators were tested which are now used on site and also with different configurations of booster sheds.Images recorded by ultra-violet(UV) camera were used to help the investigations on the effectiveness of booster sheds.By comparing UV images of the insulator being stressed with high voltage under heavy artificial rain,with and without booster sheds,it was possible to observe how significant the reduction on the flashover formation process was when booster sheds were used.The effectiveness of booster sheds was also quantified by determining the disruptive discharge of the insulator with and without them.The results of these studies can also be considered as contribution to national and international standard technical committees to improving the standardized procedure for tests on ultra high voltage(UHV) insulators under heavy rain.Subjects such as the clear definition of relevant UHV test procedure and test arrangements,including the use of UV camera,have to be taken into account.Orsino Oliveira Filho José Antonio Cardoso Darcy Ramalho de Mello Rogério Magalhes de Azevedo Sylvia G Carvalho 2011高电压技术2011,37,11:5
7Herb-induced liver injury: Systematic review and meta-analysis显示文摘BACKGROUND The use of herbal supplements and alternative medicines has been increasing in the last decades.Despite popular belief that the consumption of natural products is harmless,herbs might cause injury to various organs,particularly to the liver,which is responsible for their metabolism in the form of herb-induced liver injury(HILI).AIM To identify herbal products associated with HILI and describe the type of lesion associated with each product.METHODS Studies were retrieved using Medical Subject Headings Descriptors combined with Boolean operators.Searches were run on the electronic databases Scopus,Web of Science,MEDLINE,BIREME,LILACS,Cochrane Library for Systematic Reviews,SciELO,Embase,and Opengray.eu.Languages were restricted to English,Spanish,and Portuguese.There was no date of publication restrictions.The reference lists of the studies retrieved were searched manually.To access causality,the Maria and Victorino System of Causality Assessment in Drug Induced Liver Injury was used.Simple descriptive analysis were used to summarize the results.RESULTS The search strategy retrieved 5918 references.In the final analysis,446 references were included,with a total of 936 cases reported.We found 79 types of herbs or herbal compounds related to HILI.He-Shou-Wu,Green tea extract,Herbalife,kava kava,Greater celandine,multiple herbs,germander,hydroxycut,skullcap,kratom,Gynura segetum,garcinia cambogia,ma huang,chaparral,senna,and aloe vera were the most common supplements with HILI reported.Most of these patients had complete clinical recovery(82.8%).However,liver transplantation was necessary for 6.6%of these cases.Also,chronic liver disease and death were observed in 1.5%and 10.4%of the cases,respectively.CONCLUSION HILI is normally associated with a good prognosis,once the implied product is withdrawn.Nevertheless,it is paramount to raise awareness in the medical and non-medical community of the risks of the indiscriminate use of herbal products.Vinícius Remus Ballotin Lucas Goldmann Bigarella Ajacio Bandeira de Mello Brandão Raul Angelo Balbinot Silvana Sartori Balbinot Jonathan Soldera 2021World Journal of Clinical Cases2021,9,20:4
8Methane production and small intestinal bacterial overgrowth in children living in a slum显示文摘AIM:To analyze small intestinal bacterial overgrowth in school-aged children and the relationship between hydrogen and methane production in breath tests.METHODS:This transversal study included 85 children residing in a slum and 43 children from a private school,all aged between 6 and 10 years,in Osasco,Brazil.For characterization of the groups,data regarding the socioeconomic status and basic housing sanitary conditions were collected.Anthropometric data was obtained in children from both groups.All children completed the hydrogen(H 2) and methane(CH 4) breath test in order to assess small intestinal bacterial overgrowth(SIBO).SIBO was diagnosed when there was an increase in H 2 ≥ 20 ppm or CH 4 ≥ 10 ppm with regard to the fasting value until 60 min after lactulose ingestion.RESULTS:Children from the slum group had worse living conditions and lower nutritional indices than children from the private school.SIBO was found in 30.9%(26/84) of the children from the slum group and in 2.4%(1/41) from the private school group(P = 0.0007).Greater hydrogen production in the small intestine was observed in children from the slum group when compared to children from the private school(P = 0.007).A higher concentration of hydrogen in the small intestine(P < 0.001) and in the colon(P < 0.001) was observed among the children from the slum group with SIBO when compared to children from the slum group without SIBO.Methane production was observed in 63.1%(53/84) of the children from the slum group and in 19.5%(8/41) of the children from the private school group(P < 0.0001).Methane production was observed in 38/58(65.5%) of the children without SIBO and in 15/26(57.7%) of the children with SIBO from the slum.Colonic production of hydrogen was lower in methaneproducing children(P = 0.017).CONCLUSION:Children who live in inadequate environmental conditions are at risk of bacterial overgrowth and methane production.Hydrogen is a substrate for methane production in the colon.Carolina Santos Mello Soraia Tahan Lígia Cristina FL Melli Mirian Silva do Carmo Rodrigues Ricardo Martin Pereira de Mello Isabel Cristina Affonso Scaletsky Mauro Batista de Morais 2012World Journal of Gastroenterology2012,18,41:3
9Differences in viral kinetics between genotypes 1 and 3 of hepatitis C virus and between cirrhotic and non-cirrhotic patients during antiviral therapy显示文摘AIM: To evaluate the impact of hepatitis C virus (HCV) infection with genotype 1 or 3 and the presence or absence of liver cirrhosis (LC) in the early viral kinetics response to treatment. METHODS: Naive patients (n = 46) treated with interferon-α (IFN-α) and ribavirin and followed up with frequent early HCV-RNA determinations were analysed. Patients were infected with genotype 1 (n = 28, 7 with LC) or 3 (n = 18, 5 with LC). RESULTS: The fi rst phase decline was larger in geno- type 3 patients than in genotype 1 patients (1.72 vs 0.95 log IU/mL, P < 0.001). The second phase slope decline was also larger in genotype 3 patients than in genotype 1 patients (0.87 vs 0.15 log/wk, P < 0.001). Differences were found in both cirrhotic and non-cirrhotic patients. Genotype 1 cirrhotic patients had a slower 2nd phase slope than non-cirrhotic patients (0.06 vs 0.18 log/wk, P < 0.02). None of genotype 1 cirrhotic patients had a 1st phase decline larger than 1 log (non-cirrhotic patients: 55%, P < 0.02). A similar trend toward a slower 2nd phase slope was observed in genotype 3 cirrhotic pa- tients but the 1st phase slope decline was not different. Sustained viral response was higher in genotype 3 pa- tients than in genotype 1 patients (72% vs 14%, P < 0.001) and in genotype 1 non-cirrhotic patients than in genotype 1 cirrhotic patients (19% vs 0%). A secondphase decline slower than 0.3 log/wk was predictive of non-response in all groups. CONCLUSION: Genotype 3 has faster early viral decline than genotype 1. Cirrhosis correlates with a slower 2nd phase decline and possibly with a lower 1st phase slope decline in genotype 1 patients.José Eymard Medeiros-Filho Isabel Maria Vicente Guedes de Carvalho Mello Joo Renato Rebello Pinho Avidan U Neumann Fernanda de Mello Malta Luiz Caetano da Silva Flair José Carrilho 2006World Journal of Gastroenterology2006,12,45:3
10Immunohistochemical expression of thymidylate synthase and prognosis in gastric cancer patients submitted to fluoropyrimidine-based chemotherapy显示文摘Objective: Adjuvant chemotherapy with 5-fluorouracil(5-FU) has been widely used in gastric cancer(GC)patients to prevent relapse after curative resection. 5-FU acts by inhibiting thymidylate synthase(TS), and high levels of TS correlate with resistance to treatment with fluoropyrimidines. The aim of this study was to evaluate the expression of TS in GC patients, and its relation with clinicopathological characteristics and prognosis in adjuvant chemotherapy with 5-FU.Methods: We retrospectively evaluated 285 patients who underwent D2-gastrectomy with curative intent. TS expression was determined by immunohistochemistry(IHC) in tumor cells by tissue microarray(TMA). TS level was evaluated according to the intensity and percentage of cells marked by a score system. Patients were divided in three groups according to their TS-score: negative, low and high.Results: TS expression was positive in 92.3% of GC. TS-high, TS-low and TS-negative were observed in46.3%, 46.0% and 7.7% of patients, respectively. High-TS GC were associated with older age(P=0.007), high neutrophil/lymphocyte ratio(P=0.048), well/moderately differentiated histology(P=0.001), intestinal Lauren type(P<0.001) and absence of perineural invasion(P=0.003). Among 285 patients, 133 stage Ⅱ/Ⅲ patients(46.7%)received chemotherapy with 5-FU. In survival analysis, TS-high was associated with worse disease-free survival(DFS) in stage Ⅲ GC patients who received 5-FU-based chemotherapy(P=0.007). Multivariate analysis revealed that total gastrectomy, poorly differentiated tumors and high TS-score were associated with worse DFS in stage Ⅲ GC patients.Conclusions: High TS-score in stage Ⅲ GC was associated with poor DFS in patients treated with fluoropyrimidine-based chemotherapy.Marina Alessandra Pereira Marcus Fernando Kodama Pertille Ramos ANDre Roncon Dias Sheila Friedrich Faraj Cinthya dos Santos Cirqueira EvANDro Sobroza de Mello Bruno Zilberstein Venancio Avancini Ferreira Alves Ulysses Ribeiro Jr 2018Chinese Journal of Cancer Research2018,30,5:3
11Anti-angiogenic therapies for metastatic colorectal cancer:Current and future perspectives显示文摘Colorectal cancer(CRC)is the fourth most commonly diagnosed cancer and the second leading cause of cancer death in both men and women in the United States,with about 142820 new cases and 50830 deaths expected in 2013.Metastatic disease(mCRC)remains a challenge for oncologists worldwide due to its potential comorbidities.Recently,chemotherapy regimens containing 5-fluorouracil,leucovorin,oxaliplatin and irinotecan combinations are a standard of care in the metastatic disease.Currently,biological therapies involving vascular endothelial growth factor and epidermal growth factor receptor pathways,such as bevacizumab and cetuximab,have emerged as good option for improving mCRC patient survival.Now,aflibercept plus standard chemotherapy has also been approved in second line regimen for mCRC patients.Our review will discuss novel biological drugs and their indications for mCRC patients and will bring future perspectives in this regard.Inês Marques António Araújo Ramon Andrade de Mello 2013World Journal of Gastroenterology2013,19,44:3
12输了两美元显示文摘常说做事要听从内心的声音,可是有时候人总难免产生“歪念”。这样一来,如何判断好坏便成了我们随心而行时必须考虑的事情——如果对了,得到的可能是一笔财富;反之,也许是一无所有。而无论结果如何,若能以“两美元”的心态对待,这份淡定也算难能可贵了。Anthony de Mello 小狐 2010疯狂英语(初中天地)2010,,11:2
13A correct and complete algorithm for the generation of mechanical assembly sequences显示文摘Homem de Mello L S Sanderson A C 1991IEEE Journal of Robotics and Automation1991,7,2:2
14Low platelet count: Predictor of death and graft loss after liver transplantation显示文摘BACKGROUND The impact of platelets on liver transplantation(LT) is well recognized, but not completely understood. Platelets exert dichotomous effects on the graft and on the patient. On the one hand, they are essential for primary hemostasis and tissue repair and regeneration. On the other hand, they support ischemia/reperfusion injury and inflammatory processes. Recent evidence has shown a new role for platelet count(PC) in predicting outcomes after LT.AIM To evaluate if low PC is a predictor of short-and long-term outcomes after LT.METHODS Four hundred and eighty consecutive LT patients were retrospectively assessed.PC from the preoperative to the seventh postoperative day(POD) were considered. C-statistic analysis defined the ideal cutoff point for PC. Cox regression was performed to check whether low PC was a predictor of death,retransplantation or primary changes in graft function within one year after LT.RESULTS The highest median PC was 86 × 109/L [interquartile range(IQR) = 65–100 ×109/L] on seventh POD, and the lowest was 51 × 109/L(IQR = 38–71 × 109/L) on third POD. The C-statistic defined a PC < 70 × 109/L on fifth POD as the ideal cutoff point for predicting death and retransplantation. In the multivariate analysis, platelets < 70 × 109/L on 5 POD was an independent risk factor for death at 12 mo after LT [hazard ratio(HR) = 2.01; 95% confidence interval(CI) 1.06-3.79;P = 0.031]. In the Cox regression, patients with PC < 70 × 109/L on 5 POD had worse graft survival rates up to one year after LT(HR = 2.76; 95%CI 1.52-4.99; P =0.001).CONCLUSION PC < 70 × 109/L on 5 POD is an independent predictor of death in the first year after LT. These results are in agreement with other studies that indicate that low PC after LT is associated with negative outcomes.Pedro Beltrame Santiago Rodriguez Ajacio Bandeira de Mello Brand?o 2019World Journal of Hepatology2019,11,1:2
15Epidermal growth factor receptor and metastatic colorectal cancer:Insights into target therapies显示文摘Colorectal cancer(CRC)has high incidence and mortality worldwide.In 2012,CRC was the second most prevalent cancer among males(9%)and the third among females(8%).In recent decades,standard chemotherapies protocols combining 5-fluorouracil,leucovorin,irinotecan and oxaliplatin were important for improve survival in this set of patients.Further,biological drugs throughout epidermal growth factor receptor(EGFR)pathways showed interesting results in metastatic disease(mCRC)control when in association to standard chemotherapy regimens.Cetuximab and panitumumab are two cornerstones for mCRC treatment and are both approved in Europe and United States based on previous results phaseⅢtrials.This paper will briefly summarize those anti-EGFR therapies framework in mCRC and discusses some issues in this regard.Ramon Andrade de Mello Andrea Marin Marques António Araújo 2013World Journal of Gastroenterology2013,19,38:2
16Personalizing medicine for metastatic colorectal cancer:Current developments显示文摘Metastatic colorectal cancer(mCRC)is still one of the tumor types with the highest incidence and mortality.In 2012,colorectal cancer was the second most prevalence cancer among males(9%)and the third among females(8%).In this disease,early diagnosis is important to improve treatment outcomes.However,at the time of diagnosis,about one quarter of patients already have metastases,and overall survival of these patients at 5-years survival is very low.Because of these poor statistics,the development of new drugs against specific targets,including the pathway of angiogenesis,has witnessed a remarkable increase.So,targets therapies through epidermal growth factor and its receptor and also KRAS pathways modulation acquired a main role whether in association with standard chemotherapy and radiotherapy.With the current knowledge in the field of molecular biology,including genetic mutations and polymorphisms,we know better why patients respond so differently to the same treatments.So,in the future we can develop increasingly personalized treatments to the patient and not the disease.This review aims to summarize some molecular pathways and their relation to tumor growth,as well as novel targeted developing drugs and recently approved for mCRC.rea Marin Marques Alice Turner Ramon rade de Mello 2014World Journal of Gastroenterology2014,20,30:2
17Derivation of synchronous machine parameters from tests显示文摘de MELLO F P RIBEIRO J R 1977IEEE Trans on Powcr Apparatus and Systems1977,96,4:1
18A computerised information system for the analysis of hospital admission flow and characteristics显示文摘De Mello PS Almeida RM Pereira WC 2001Int J Med Inf2001,61,1:1
19Ecpression of the aphthovirus RNA polymerase gene in Escherichia coli and its use together with otherbioengineered non-structural antigens in detection of late persistent infections显示文摘Neitzert E Beck E De Mello P A 1991Virology1991,184,:1
20Management of chest injuries-a 5 year retrospective survey 显示文摘Kalyanaraman R De Mello WF Ravishankar M 1998Injury1998,29,6:1
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