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70篇 您的检索式:作者名="Costa JO"
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1Hyperbaric oxygen therapy as a complementary treatment for radiation proctitis:Useless or useful?-A literature review显示文摘Radiotherapy(RT)is the backbone of multimodality treatment of more than half of cancer cases.Despite new modern RT techniques,late complications may occur such as radiation proctitis(RP).The natural history of RP is unpredictable.Minor symptoms may resolve spontaneously or require conservative treatment.On the other hand,for similar and uncomplicated clinical contexts,symptoms may persist and can even be refractory to the progressive increase in treatment measures.Over the last decades,an enormous therapeutic armamentarium has been considered in RP,including hyperbaric oxygen therapy(HBOT).Currently,the evidence regarding the impact of HBOT on RP and its benefits is conflicting.Additional prospective and randomised studies are necessary to validate HBOT’s effectiveness in the‘real world’clinical practice.This article reviewed the relevant literature on pathophysiology,clinical presentation,different classifications and discuss RP management including a proposal for a therapeutic algorithm with a focus on HBOT.Diogo Alpuim Costa Carla Espiney Amaro Ana Nunes Joana Santos Cardoso Pedro Modas Daniel Isabel Rosa João Vieira Branco 2021World Journal of Gastroenterology2021,27,27:4
2Lymphocyte subsets in alcoholic liver disease显示文摘AIM:To compare lymphocyte subsets between healthy controls and alcoholics with liver disease.METHODS:The patient cohort for this study included individuals who were suspected to have alcoholic liver disease(ALD) and who had undergone liver biopsy(for disease grading and staging,doubts about diagnosis,or concurrent liver disease;n = 56).Normal controls included patients who were admitted for elective cholecystectomy due to non-complicated gallstones(n = 27).Formalin-fixed,paraffin-embedded liver biopsy specimens were sectioned and stained with hematoxylin and eosin and Perls' Prussian blue.The non-alcoholic steatohepatitis score was used to assess markers of ALD.Lymphocyte population subsets were determined by flow cytometry.T lymphocytes were identified(CD3+),and then further subdivided into CD4+ or CD8+ populations.B lymphocytes(CD19+) and natural killer(NK) cell numbers were also measured.In addition to assessing lymphocyte subpopulation differences between ALD patients and controls,we also compared subsets of alcoholic patients without cirrhosis or abstinent cirrhotic patients to normal controls.RESULTS:The patient cohort primarily consisted of older men.Active alcoholism was present in 66.1%.Reported average daily alcohol intake was 164.9 g and the average lifetime cumulative intake was 2211.6 kg.Cirrhosis was present in 39.3% of the patients and 66.1% had significant fibrosis(perisinusoidal and portal/periportal fibrosis,bridging fibrosis,or cirrhosis) in their liver samples.The average Mayo end-stage liver disease score was 7.6.No hereditary hemochromatosis genotypes were found.ALD patients(n = 56) presented with significant lymphopenia(1.5 × 109/L ± 0.5 × 109/L vs 2.1 × 109/L ± 0.5 × 109/L,P < 0.0001),due to a decrease in all lymphocyte subpopulations,except for NK lymphocytes:CD3+(1013.0 ± 406.2/mm3 vs 1523.0 ± 364.6/mm3,P < 0.0001),CD4+(713.5 ± 284.7/mm3 vs 992.4 ± 274.7/mm3,P < 0.0001),CD8+(262.3 ± 140.4/mm3 vs 478.9 ± 164.6/mm3,P < 0.0001),and CD19+(120.6 ± 76.1/mm3 vs 264.6 ± 88.0/mm3,P < 0.0001).CD8+ lymphocytes suffered the greatest reduction,as evidenced by an increase in the CD4+/CD8+ ratio(3.1 ± 1.3 vs 2.3 ± 0.9,P = 0.013).This ratio was associated with the stage of fibrosis on liver biopsy(rs = 0.342,P = 0.01) and with Child-Pugh score(rs = 0.482,P = 0.02).The number of CD8+ lymphocytes also had a positive association with serum ferritin levels(rs = 0.345,P = 0.009).Considering only patients with active alcoholism but not cirrhosis(n = 27),we found similar reductions in total lymphocyte counts(1.8 × 109/L ± 0.3 × 109/L vs 2.1 × 109/L ± 0.5 × 109/L,P = 0.018),and in populations of CD3+(1164.7 ± 376.6/mm3 vs 1523.0 ± 364.6/mm3,P = 0.001),CD4+(759.8 ± 265.0/mm3 vs 992.4 ± 274.7/mm3,P = 0.003),CD8+(330.9 ± 156.3/mm3 vs 478.9 ± 164.6/mm3,P = 0.002),and CD19+(108.8 ± 64.2/mm3 vs 264.6 ± 88.0/mm3,P < 0.0001).In these patients,the CD4+/CD8+ ratio and the number of NK lymphocytes was not significantly different,compared to controls.Comparing patients with liver cirrhosis but without active alcohol consumption(n = 11),we also found significant lymphopenia(1.3 × 109/L ± 0.6 × 109/L vs 2.1 × 109/L ± 0.5 × 109/L,P < 0.0001) and decreases in populations of CD3+(945.5 ± 547.4/mm3 vs 1523.0 ± 364.6/mm3,P = 0.003),CD4+(745.2 ± 389.0/mm3 vs 992.4 ± 274.7/mm3,P = 0.032),CD8+(233.9 ± 120.0/mm3 vs 478.9 ± 164.6/mm3,P < 0.0001),and CD19+(150.8 ± 76.1/mm3 vs 264.6 ± 88.0/mm3,P = 0.001).The NK lymphocyte count was not significantly different,but,in this group,there was a significant increase in the CD4+/CD8+ ratio(3.5 ± 1.3 vs 2.3 ± 0.9,P = 0.01).CONCLUSION:All patient subsets presented with decreased lymphocyte counts,but only patients with advanced fibrosis presented with a significant increase in the CD4+/CD8+ ratio.Luís Costa Matos Paulo Batista Nuno Monteiro Joo Ribeiro Maria A Cipriano Pedro Henriques Fernando Giro Armando Carvalho 2013World Journal of Hepatology2013,5,2:4
3Inflammatory bowel disease in an underdeveloped region of Northeastern Brazil显示文摘AIM: To evaluate the demographic characteristics and clinical phenotypes of inflammatory bowel disease(IBD) in a geographic area in Northeastern Brazil.METHODS: This retrospective study was conducted at the Hospital of the Federal University of Piauí in Northeastern Brazil. Demographic characteristics and clinical phenotypes of IBD were analyzed in relation to the time of diagnostic confirmation, which was defined as the date of disease onset. Data were collected between January 2011 and December 2012 and included all census patients 18 years of age or older during that period for whom there was diagnostic confirmation of Crohn's disease(CD), ulcerative colitis(UC), or unclassified colitis according to the Montreal criteria. We also analyzed the period of time between the onset of clinical manifestations and the diagnosis of IBD(delay in the diagnosis). Statistical analyses included means and standard deviations for numeric variables and the Pearson χ2 adherence test for nominal variables. The annual index occurrence and overall prevalence of IBD at our institution were also calculated, with P values < 0.05 indicating statistical significance. This study was approved by the Institutional Ethics and Research Committee.RESULTS: A total of 252 patients with IBD were included, including 152(60.3%) UC patients and 100(39.7%) CD patients. The clinical and demographic characteristics of all patients with IBD showed a female to male ratio of 1.3:1.0 and a mean age of35.2(SD = 14.5) years. In addition, the majority of patients were miscegenated(171, 67.9%), had received higher education(157, 62.4%), lived in urban areas(217, 86.1%), and were under the age of 40 years(97, 62.5%). For patients with CD, according to the Montreal classification, the predominant features present from the onset of disease were an age between 17 and 40 years(A2); colonic disease location(L2); and nonstricturing, nonfistulizing disease behavior(B1). However, approximately one-quarter of all CD patients demonstrated perineal involvement. We also observed considerable delay in the diagnosis of IBD throughout the entire study period(mean = 35.5 mo). In addition, the annual index occurrence rose from 0.08 to 1.53 cases/105 inhabitants/year during the study period, and the prevalence rate was 12.8 cases/105 inhabitants in 2012. Over the last two decades, there was a noted increase in the frequency of IBD in the study area.CONCLUSION: In this study, there was a predominance of patients with UC, young people under 40 years of age, individuals with racial miscegenation, and low annual incomes.José Miguel Luz Parente Claudio Saddy Rodrigues Coy Viriato Campelo Mírian Perpétua Palha Dias Parente Leonardo Araújo Costa Renata Mendes da Silva Celso Stephan José Murilo Robilotta Zeitune 2015World Journal of Gastroenterology2015,21,4:3
4Association between EGF +61A/G polymorphism and gastric cancer in Caucasians显示文摘AIM: To investigate the association between epidermal growth factor (EGF) +61A/G polymorphism and susceptibility to gastric cancer, through a cross-sectional study. METHODS: Polymerase chain reaction resctriction fragment lenght polymorphism analyses were used to genotype EGF +61 in 207 patients with gastric lesions (162 patients with gastric adenocarcinomas, 45 with atrophy or intestinal metaplasia) and 984 controls. All subjects were Caucasian. RESULTS: Genotype distribution was 23.5% for GG and 76.5% for GA/AA in the control group, 18.4% for GG and 68.6% for GA/AA in the entire group with gastric lesions and 17.9% for GG and 82.1% for GA/AA in the group with gastric adenocarcinoma. No statistically significant associations were found between EGF +61 variants and risk for developing gastric cancer [odds ratios (OR) = 1.41, 95% confidence intervals (CI): 0.90-2.21, P = 0.116]. However, the stratification of individuals by gender revealed that males carrying A alleles (EGF +61A/G or AA) had an increased risk for developing gastric cancer as compared to GG homozygous males (OR = 1.55, 95% CI: 1.05-2.28, P = 0.021). CONCLUSION: In summary, we found that males who were A carriers for EGF +61 had an increased risk for developing gastric cancer. This result may be explained by the suggestion that women secrete less gastric acid than men.Ana Paula Araújo Bruno M Costa Ana L Pinto-Correia Maria Fragoso Paula Ferreira Mário Dinis-Ribeiro Sandra Costa Rui M Reis Rui Medeiros 2011World Journal of Gastroenterology2011,17,4:3
5Toxicity assessment of polyethylene microplastics in combination with a mix of emerging pollutants on Physalaemus cuvieri tadpoles显示文摘Studies in recent years have shown that aquatic pollution by microplastics(MPs)can be considered to pose additional stress to amphibian populations.However,our knowledge of how MPs affect amphibians is very rudimentary,and even more limited is our understanding of their effects in combination with other emerging pollutants.Thus,we aimed to evaluate the possible toxicity of polyethylene MPs(PE-MPs)(alone or in combination with a mix of pollutants)on the health of Physalaemus cuvieri tadpoles.After 30 days of exposure,multiple biomarkers were measured,including morphological,biometric,and developmental indices,behavioral parameters,mutagenicity,cytotoxicity,antioxidant and cholinesterase responses,as well as the uptake and accumulation of PE-MPs in animals.Based on the results,there was no significant change in any of the parameters measured in tadpoles exposed to treatments,but induced stress was observed in tadpoles exposed to PE-MPs combined with themixture of pollutants,reflecting significant changes in physiological and biochemical responses.Through principal component analysis(PCA)and integrated biomarker response(IBR)assessment,effects induced by pollutants in each test group were distinguished,confirming that the exposure of P.cuvieri tadpoles to the PE-MPs in combination with a mix of emerging pollutants induces an enhanced stress response,although the uptake and accumulation of PE-MPs in these animalswas reduced.Thus,our study provides newinsight into the danger to amphibians of MPs coexisting with other pollutants in aquatic environments.Amanda Pereira da Costa Araújo Thiarlen Marinho da Luz Mohamed Ahmed Ibrahim Ahmed Mir Mohammad Ali Md.Mostafizur Rahman Bojan Nataraj Daniela de Melo e Silva DamiàBarceló Guilherme Malafaia 2023Journal of Environmental Sciences2023,,5:2
6氮素改变辣椒初级代谢和薄壁组织厚度调控比叶面积研究显示文摘比叶面积(SLA)是影响植物光截获和光利用效率的关键性状,常常影响植物的生长和产量。SLA是解释不同植物在不同环境下生长差异的一个关键性状。光照和氮素供应都是决定SLA的重要因素。为了更好地了解辐照度和氮素对辣椒(Capsicum chinense)SLA的影响,研究对两个中国辣椒商品种(Biquinho和Habanero)的初级代谢产物和形态特征进行了分析。两种基因型辣椒的SLA随着遮阴而增加,但随氮供应量的增加而下降;在氮素供应由缺乏到充足的范围内Habanero品种的SLA表现稳定。相关分析表明,高氮供应导致SLA降低是因为氨基酸、蛋白质和淀粉含量的调节,从而影响叶片密度。此外,在中度缺氮到充足供氮范围内,两种基因型辣椒的SLA表现出响应差异,Biquinho和Habanero分别在栅栏和海绵状薄壁组织上表现出差异。总之,结果表明,SLA对氮供应的反应是由某些代谢物含量和依赖于基因型的影响叶片厚度及密度的薄壁组织变化平衡调节的。Lucas de ávila Silva Rebeca P.Omena-Garcia Jorge A.Condori-Apfata Paulo Mafra de Almeida Costa Natália Machado Silva Fábio M.Da Matta Agustin Zsogon Wagner L.Araújo Edgard A.de Toledo Picoli Ronan Sulpice Adriano Nunes-Nesi 沈凌峰 吉雪花(译) 2021辣椒杂志2021,,3:2
7Effects of living and metabolically inactive mesenchymal stromal cells and their derivatives on monocytes and macrophages显示文摘Mesenchymal stromal cells (MSCs) are multipotent and self-renewing stem cellsthat have great potential as cell therapy for autoimmune and inflammatorydisorders, as well as for other clinical conditions, due to their immunoregulatoryand regenerative properties. MSCs modulate the inflammatory milieu by releasingsoluble factors and acting through cell-to-cell mechanisms. MSCs switch theclassical inflammatory status of monocytes and macrophages towards a nonclassicaland anti-inflammatory phenotype. This is characterized by an increasedsecretion of anti-inflammatory cytokines, a decreased release of pro-inflammatorycytokines, and changes in the expression of cell membrane molecules and inmetabolic pathways. The MSC modulation of monocyte and macrophage phenotypesseems to be critical for therapy effectiveness in several disease models, sincewhen these cells are depleted, no immunoregulatory effects are observed. Here,we review the effects of living MSCs (metabolically active cells) and metabolicallyinactive MSCs (dead cells that lost metabolic activity by induced inactivation) andtheir derivatives (extracellular vesicles, soluble factors, extracts, and microparticles)on the profile of macrophages and monocytes and the implications forimmunoregulatory and reparative processes. This review includes mechanisms ofaction exhibited in these different therapeutic appro-aches, which induce the antiinflammatoryproperties of monocytes and macrophages. Finally, we overviewseveral possibilities of therapeutic applications of these cells and their derivatives,with results regarding monocytes and macrophages in animal model studies andsome clinical trials.Alexia Nedel Sant'Ana Anelise Bergmann Araújo Fabiany da Costa Gonçalves Ana Helena Paz 2021World Journal of Stem Cells2021,13,9:2
8Inhomogeneous distribution of REE in scheelite and dynamics of Archaean hydrothermal systems (Mt. Charlotte and Drysdale gold deposits, Western Australia)显示文摘Jo?l Brugger Yann Lahaye Sylvie Costa David Lambert Roger Bateman 2000Contributions to Mineralogy and Petrology2000,,3:2
9Wind velocity and sand transport on a barchan dune显示文摘G Sauermann J.S Andrade L.P Maia U.M.S Costa A.D Araújo H.J Herrmann 2003Geomorphology2003,,3:2
10Anti- Helicobacter pylori activity of Terminalia macroptera root显示文摘Olga Silva Sílvia Viegas Cristina de Mello-Sampayo Maria Jo?o P. Costa Rita Serrano José Cabrita Elsa T. Gomes 2012Fitoterapia2012,,5:2
11Multiresponse Optimization and Pareto Frontiers显示文摘Nuno Ricardo Costa Jo?o Louren?o Zulema Lopes Pereira 2011Qual Reliab Engng Int2011,,7:1
12Desirability function approach: A review and performance evaluation in adverse conditions显示文摘Nuno R. Costa Jo?o Louren?o Zulema L. Pereira 2011Chemometrics and Intelligent Laboratory Systems2011,,2:1
13Antithrombotic treatment in chronic heart failure and sinus rhythm: Systematic review显示文摘AIM: To assess the efficacy and safety of antithrombotic drugs(antiplatelet or anticoagulant drugs) compared to no antithrombotic treatment or placebo in patients with heart failure(HF) and sinus rhythm. METHODS: We searched Medline and Cochrane Library for randomized controlled trials evaluating antithrombotic treatment and no antithrombotic treatment in patients with HF and sinus rhythm. Risk ratio(RR) and 95%CIs were estimated performing meta-analysis with random effects method. RESULTS: Two studies met the inclusion criteria: Heart failure Long-term Antithrombotic Study and Warfarin/Aspirin Study in Heart failure, with 336 patients and mean follow-up 1.8-2.25 years. Stroke risk was not reduced by acetylsalicylic acid(RR = 1.18, 95%CI: 0.17-8.15), oral anticoagulation(RR = 0.30, 95%CI: 0.03-2.65) or overall antithrombotic drugs(RR = 0.52, 95%CI: 0.10-2.74). Acetylsalicylic acid showed a significant increased risk of worsening HF(RR = 1.78, 95%CI: 1.08-2.92), while oral anticoagulation had no impact in this outcome(RR = 1.03, 95%CI: 0.61-1.75). Overall antithrombotic drugs showed a significant risk increase of major bleeding(RR = 6.99, 95%CI: 0.89-54.64). CONCLUSION: Best available evidence does not support the routine use of antithrombotic drugs in patients with HF and sinus rhythm. These drugs, particularly oral anti-coagulation has the hazard of increase significantly major bleeding risk.Daniel Caldeira Inês Cruz Rita Calé Cristina Martins Helder Pereira Joaquim J Ferreira Fausto J Pinto Joo Costa 2015World Journal of Meta-Analysis2015,3,1:1
14Chronic subdural hematomas and the elderly:surgical results from a series of 125 cases:Old'horses' are not to be shot显示文摘de Arat~jo Silva DO Matis GK Costa LF et d 2012Surg Neurol Int2012,3,:1
15Neutralizing potency of horse antibothropic antivenom, correlation between in vivo and in vitro methods 显示文摘Maria WS Cambuy Me Costa JO 1998Toxicon1998,36,10:1
16Comparison of kineticstudy of CTMA+ removal of molecular sieveTi-MCM-41 synthesized with natural and commercialsilica显示文摘BRAGA FONTES M D S DE ARAúJO MELO D M DE CASTRO COSTA C 2015Materials research2015,18,3:1
17Species identification of formed fishery products and high pressure-treated fish by electrophoresis:a collaborative study显示文摘Monique Etienne Marc Jér(o)me Jo(e)l Fleurence Hartmut Rehbein Rainer Kündiger Rogério Mendes Helena Costa and Iciar Martínez 2001Food Chemistry2001,72,1:1
18Release of cytokines by stimulated peripheral blood mononuclear cells in chronic periodontitis显示文摘Thais Oliveira Gon?alves Dirceu Costa Claudia Ida Brodskyn Poliana Mendes Duarte Jo?o Batista César Neto Getulio Nogueira-Filho 2010Archives of Oral Biology2010,,12:1
19Analysis of Toll-like receptors,iN- OS and cytokine profiles in patients with pulmonary tuber- culosis during anti-tuberculosis treatment显示文摘DE OLIVEIRA LR PERESI E GOLIM MA GATTO M ARAU- JO JJ DA COSTA E 2014PLoS One2014,9,88:1
20Effects of low doses of inhaled nitric oxide combined with oxygen for the evaluation of pulmonary vascular reactivity in patients with pulmonary hypertension 显示文摘Azeka E Costa Auler JO Jr Kajita L 2002Pediatr Cardiol2002,23,1:1
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