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Search Results: 1 - 10 of 78207 matches for " Deise Luiza da Silva;Menna-Barreto "
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A organiza??o dos trabalhadores desempregados como media??o para a consciência de classe
Ferraz, Deise Luiza da Silva;Menna-Barreto, Jo?o Alberto;
Organiza??es & Sociedade , 2012, DOI: 10.1590/S1984-92302012000200002
Abstract: we aim to analyze the economic and political determinations which have instigated the movement towards a class consciousness among an unemployed population mediated by the formation of a social movement, the unemployed workers movement (mtd). we use the marxist debate about social classes (sc) and class consciousness using the studies of iasi (2006). the research method used in the present work is characteristic of the dialectical-materialist approach, which is based in three assumptions: contradiction, totality and historicity. the condition of the unemployed which fostered the movement for group fusion (sartre's discussion), was the result of the new organization of production that has caused both to the working class and the movement of regressivity in the advanced progressivity as regards the possibilities of organization beyond the trade unions. the sc are imposed at the same time as they are imposed by the concrete action of their subjects, in a way which is required by capitalism, but only take place while practical mediations, while contingent mediations.
A Organiza o dos Trabalhadores Desempregados como Media o para a Consciência de Classe
Deise Luiza da Silva Ferraz,Jo?o Alberto Menna-Barreto
Organiza??es & Sociedade , 2012,
Abstract: Objetivamos analisar as determina es econ micas e políticas que tensionaram o movimento de constitui o de uma consciência de classe em um estrato da popula o desempregada, mediada pela forma o do Movimento dos Trabalhadores Desempregados [MTD]. Valemos-nos do debate marxista sobre classes sociais (CS) e consciência de classe, utilizando os estudos de Iasi (2006). A metodologia utilizada é própria da abordagem dialético-materialista, que se assenta em três pressupostos: a contradi o, a totalidade e a historicidade. A condi o de desempregados que impulsionou o movimento de fus o do grupo (discuss o sartriana) é resultante da nova forma de organiza o da produ o a qual implicou à classe trabalhadora tanto o movimento de regressividade na progressividade avan ada quanto as possibilidades de organiza o para além das entidades sindicais. As CS est o instituídas ao mesmo tempo em que se instituem pela a o concreta de seus sujeitos, de modo que s o necessárias ao capitalismo, mas - e t o somente - só se realizam enquanto media es práticas, enquanto media es contingentes. ---- The Organization of Unemployed Workers as Mediation for Class Consciousness ---- ABSTRACT ---- We aim to analyze the economic and political determinations which have instigated the movement towards a class consciousness among an unemployed population mediated by the formation of a social movement, the Unemployed Workers Movement (MTD). We use the Marxist debate about social classes (SC) and class consciousness using the studies of Iasi (2006). The research method used in the present work is characteristic of the dialectical-materialist approach, which is based in three assumptions: contradiction, totality and historicity. The condition of the unemployed which fostered the movement for group fusion (Sartre’s discussion), was the result of the new organization of production that has caused both to the working class and the movement of regressivity in the advanced progressivity as regards the possibilities of organization beyond the Trade Unions. The SC are imposed at the same time as they are imposed by the concrete action of their subjects, in a way which is required by capitalism, but only take place while practical mediations, while contingent mediations.
Avalia??o evolutiva da espirometria na fibrose cística
ANDRADE, ELENARA DA FONSECA;FONSECA, DEISI LETíCIA OLIVEIRA DA;SILVA, FERNANDO ANT?NIO DE ABREU E;MENNA-BARRETO, SéRGIO SALDANHA;
Jornal de Pneumologia , 2001, DOI: 10.1590/S0102-35862001000300002
Abstract: objectives: to evaluate the evolution pattern of dynamic pulmonary flow and volume in cystic fibrosis patients and analyze the relation between the severity of ventilatory attacks and age, gender, genotype and pulmonary colonization. methods: at the pediatric pulmonary unit and pulmonary service of hospital de clínicas of porto alegre, 243 spirometries performed between 1987 and 1999 in 52 cystic fibrosis patients older than four years of age were reviewed. from the patients' medical records the following informations were extracted: age at diagnosis, genetic data, bronchial colonization and absolute as well as percent values of the flows and volumes of the best annual spirometry. results: the age of the patients ranged from four to 26 years (mean = 13.04 ± 4.82). out of the 52 patients, 49 (94%) had at least one sputum culture with p. aeruginosa, 45 (86%) with s. aureus and 13 (25%) with b. cepacia. at initial evaluation, that included patients four to six years old (n = 40), mean values for fvc and fev1 were 114.24% and 112.25%, respectively. mean fvc remained above baseline until 18 years of age, when it abruptly dropped to 67.2% (p = 0.0002). mean fev1 values dropped to less than 80% at ten years and was 50% at 18 years (p < 0.00001). the fev1/fvc% relationship, the most obstruction sensitive index, was observed to be reduced as early as initial evaluation. it was 85% between four and six years and gradually decreased to 63% at 18 years. the mean values of fef50, fef75 and fmef were initially normal (94%, 80% and 90%, respectively), showed a greater and earlier statistically significant decline, and reached to 37%, 12.5% and 19%, respectively, at 18 years. although a tendency to lower terminal flow was seen in the girls, the differences were not statistically significant. significant correlations between pulmonary function and the airway colonizator or genotype were not detected statistic. conclusion: the evolution pattern of pulmonary function alterations found
Avalia o evolutiva da espirometria na fibrose cística
ANDRADE ELENARA DA FONSECA,FONSECA DEISI LETíCIA OLIVEIRA DA,SILVA FERNANDO ANT?NIO DE ABREU E,MENNA-BARRETO SéRGIO SALDANHA
Jornal de Pneumologia , 2001,
Abstract: Objetivo do estudo: Avaliar o padr o da evolu o dos fluxos e volumes pulmonares dinamicos dos pacientes com fibrose cística (FC), assim como analisar a rela o entre a gravidade do comprometimento ventilatório com a idade, sexo, genótipo e coloniza o pulmonar. Material e método: Na Unidade de Pneumologia Infantil e Servi o de Pneumologia do Hospital de Clínicas de Porto Alegre, foram avaliadas 243 espirometrias de 52 pacientes portadores de FC maiores de quatro anos realizadas no período de 1987 a 1999. Do prontuário médico foram extraídas informa es sobre idade ao diagnóstico, pesquisa genética, coloniza o br nquica e os valores absolutos e percentuais para fluxos e volumes da melhor espirometria de cada ano. Resultados: A idade dos pacientes variou de quatro a 26 anos (média = 13,04 ± 4,82). Dos 52 pacientes, 49 (94%) tiveram pelo menos uma cultura de escarro com P. aeruginosa, 45 (86%) com S. aureus e 13 (25%) com B. cepacia. Na avalia o inicial dos quatro aos seis anos (n = 40), os valores médios da CVF e do VEF1 foram de 114,24% e 112,25%, respectivamente. A média da CVF manteve-se acima do normal até os 18 anos, quando apresentou queda súbita para 67,2% (p = 0,0002). A média do VEF1 atingiu valores abaixo de 80% aos dez anos, estando em 50% aos 18 anos (p < 0,00001). A rela o VEF1/CVF%, índice mais sensível de obstru o, mostrou-se diminuída já na primeira avalia o, sendo 85% entre os quatro e seis anos, com declínio lento progressivo, chegando a 63% aos 18 anos. Os valores médios do FEF50, FEF75 e FMEF inicialmente foram normais (94%, 80% e 90%, respectivamente), mostraram queda maior e mais precoce, estatisticamente significativa, atingindo valores médios aos 18 anos de 37%, 12,5% e 19%, respectivamente. Embora houvesse tendência para fluxos terminais mais baixos para as meninas, as diferen as n o tiveram valor estatístico. Também n o foram detectadas correla es estatisticamente significativas entre a fun o pulmonar e o germe colonizador da via aérea ou o genótipo. Conclus o: O padr o evolutivo das altera es funcionais pulmonares encontrado nos pacientes está de acordo com o descrito na literatura, onde predomina o distúrbio ventilatório obstrutivo com redu o precoce dos fluxos terminais e acometimento tardio da CVF.
Cellular Growth and Mitochondrial Ultrastructure of Leishmania (Viannia) braziliensis Promastigotes Are Affected by the Iron Chelator 2,2-Dipyridyl
Camila Mesquita-Rodrigues,Rubem F. S. Menna-Barreto,Leonardo Sabóia-Vahia,Silvia A. G. Da-Silva,Elen M. de Souza,Mariana C. Waghabi,Patrícia Cuervo ,José B. De Jesus
PLOS Neglected Tropical Diseases , 2013, DOI: 10.1371/journal.pntd.0002481
Abstract: Background Iron is an essential element for the survival of microorganisms in vitro and in vivo, acting as a cofactor of several enzymes and playing a critical role in host-parasite relationships. Leishmania (Viannia) braziliensis is a parasite that is widespread in the new world and considered the major etiological agent of American tegumentary leishmaniasis. Although iron depletion leads to promastigote and amastigote growth inhibition, little is known about the role of iron in the biology of Leishmania. Furthermore, there are no reports regarding the importance of iron for L. (V.) braziliensis. Methodology/Principal Findings In this study, the effect of iron on the growth, ultrastructure and protein expression of L. (V.) braziliensis was analyzed by the use of the chelator 2,2-dipyridyl. Treatment with 2,2-dipyridyl affected parasites' growth in a dose- and time-dependent manner. Multiplication of the parasites was recovered after reinoculation in fresh culture medium. Ultrastructural analysis of treated promastigotes revealed marked mitochondrial swelling with loss of cristae and matrix and the presence of concentric membranar structures inside the organelle. Iron depletion also induced Golgi disruption and intense cytoplasmic vacuolization. Fluorescence-activated cell sorting analysis of tetramethylrhodamine ester-stained parasites showed that 2,2-dipyridyl collapsed the mitochondrial membrane potential. The incubation of parasites with propidium iodide demonstrated that disruption of mitochondrial membrane potential was not associated with plasma membrane permeabilization. TUNEL assays indicated no DNA fragmentation in chelator-treated promastigotes. In addition, two-dimensional electrophoresis showed that treatment with the iron chelator induced up- or down-regulation of proteins involved in metabolism of nucleic acids and coordination of post-translational modifications, without altering their mRNA levels. Conclusions Iron chelation leads to a multifactorial response that results in cellular collapse, starting with the interruption of cell proliferation and culminating in marked mitochondrial impairment in some parasites and their subsequent cell death, whereas others may survive and resume proliferating.
Caracteriza??o e distribui??o de cronotipos no sul do Brasil: diferen?as de gênero e esta??o de nascimento
Alam, Marilene Farias;Tomasi, Elaine;Lima, Maurício Silva de;Areas, Roberta;Menna-Barreto, Luiz;
Jornal Brasileiro de Psiquiatria , 2008, DOI: 10.1590/S0047-20852008000200001
Abstract: objective: to analyze circadian typology (diurnal preference) and gender differences in a university student population from southern brazil. methods: seven hundred and thirty six university student volunteers, with an age range 17-49 years, filled the brazilian version of the chronotype questionnaire (cq), the portuguese translation of the horne and ?stberg's morningness-eveningness questionnaire (meq). central and dispersion tendencies measures and cq scores distribution curve (kolmogorov-smirnov) were calculated according to gender (student t), age, birth season, and daylight-saving time discomfort (qui-square). results: six hundred and fourty eight individuals (36% men; 64% women) were included in this study, with 12% of losses due to incorrect questionnaires. cq score distribution was correlated to the normal curve (range=18-77; mean=46.6; s.d.=10.8). in this sample, 32% were evening-types; 54% were intermediate-types, and 14% were morning-types. cq means were significatively different (p=0.003) when males (44.9±10.8) were compared to females (47.5±10.7), and 70% of those born during spring and summer were evening-types (p=0.015).there was no gender-by-season association. conclusions: men, and individuals born in spring and summer, presented eveningness preference, without gender-birth season interaction. our results are also in agreement with studies performed in the northern hemisphere, which showed an association between birth season and diurnal preference.
Human T-cell lymphotropic virus type II in Guaraní Indians, Southern Brazil
Menna-Barreto, Marcio;Bender, Ana Ligia;Bonatto, Sandro L.;Freitas, Loreta B.;Salzano, Francisco M.;Tsuneto, Luiza T.;Petzl-Erler, Maria Luiza;
Cadernos de Saúde Pública , 2005, DOI: 10.1590/S0102-311X2005000600045
Abstract: human t-cell lymphotropic virus type ii (htlv-ii) is found in many new world indian groups on the american continent. in brazil, htlv-ii has been found among urban residents and indians in the amazon region, in the north. guaraní indians in the south of brazil were studied for htlv-i/ii infection. among 52 individuals, three (5.76%) showed positive anti-htlv-ii antibodies (enzyme-linked immunosorbent assay and western blot). this preliminary report is the first seroepidemiological study showing htlv-ii infection among indians in the south of brazil.
Bacteriological analysis of induced sputum for the diagnosis of pulmonary tuberculosis in the clinical practice of a general tertiary hospital
Garcia, Sabrina Bollmann;Perin, Christiano;Silveira, Marcel Muller da;Vergani, Gustavo;Menna-Barreto, Sérgio Saldanha;Dalcin, Paulo de Tarso Roth;
Jornal Brasileiro de Pneumologia , 2009, DOI: 10.1590/S1806-37132009001100006
Abstract: objective: to determine the diagnostic sensitivity of bacteriological analyses in induced sputum (is) for the diagnosis of pulmonary tuberculosis (tb) and to identify the clinical characteristics associated with the confirmed diagnosis, as well as to determine the diagnostic yield of bronchoscopy carried out when is tests negative for afb in smear microscopy. methods: a retrospective, cross-sectional study of patients suspected of having active pulmonary tb and referred to our clinic for sputum induction. we consecutively reviewed the laboratory data of all patients submitted to sputum induction between june of 2003 and january of 2006, as well as their electronic medical records. in addition, the results of the bacteriological analysis of bronchoscopic specimens collected from the patients whose afb tests were negative in is were reviewed. results: of the 417 patients included in the study, 83 (19.9%) presented is samples that tested positive for tb (smear microscopy or culture). in the logistic regression analysis, radiological findings of cavitation (or = 3.8; 95% ci: 1.9-7.6) and of miliary infiltrate (or = 3.7; 95% ci: 1.6-8.6) showed the strongest association with the diagnosis of pulmonary tb. in 134 patients, bronchoscopy was carried out after negative afb results in is and added 25 (64.1%) confirmed diagnoses of pulmonary tb. conclusions: in our clinical practice, the frequency of confirmed diagnosis of pulmonary tb using is (19.9%) was lower than that previously reported in controlled trials. cavitation and miliary infiltrate increase the diagnostic probability of pulmonary tb using is. the use of bronchoscopy when is tests negative for afb significantly increases sensitivity in the diagnosis of pulmonary tb.
O desafio de diagnosticar tromboembolia pulmonar aguda em pacientes com doen?a pulmonar obstrutiva cr?nica
Menna-Barreto, Sérgio Saldanha;
Jornal Brasileiro de Pneumologia , 2005, DOI: 10.1590/S1806-37132005000600012
Abstract: pulmonary thromboembolism and exacerbation of chronic obstructive pulmonary disease are common conditions. chronic obstructive pulmonary disease is a clinical risk factor for pulmonary thromboembolism. the presentation of acute pulmonary thromboembolism and acute exacerbation of chronic obstructive pulmonary disease often mimic each other so closely that they cannot be distinguished clinically. the structural abnormalities of the lungs in chronic obstructive pulmonary disease make also difficult to interpret the results of noninvasive tests like ventilation-perfusion lung scans. therefore, diagnosing acute pulmonary thromboembolism in patients with underlying chronic obstructive pulmonary disease is a challenging task. in order to update knowledge of the subject and offer suggestions regarding conduct, we evaluated various studies addressing this theme, including case reports and case series. in addition, we reviewed diagnostic approaches to acute pulmonary thromboembolism, and we reflect upon that topic. the clinical probability of pulmonary thromboembolism concomitant to chronic obstructive pulmonary disease is typically intermediate, as is positivity on the ventilation-perfusion lung scan. diagnostic algorithms should take that into consideration.
Tuberculous meningoencephalomyelitis and coinfection with HTLV-I + HTLV-II: case report
Menna-Barreto, Marcio;Machado, Denise C.;
Arquivos de Neuro-Psiquiatria , 2006, DOI: 10.1590/S0004-282X2006000100026
Abstract: htlv-i and htlv-ii are endemic in some areas of brazil, where an associated disease, htlv-i-associated myelopathy/tropical spastic paraparesis (ham/tsp) have been diagnosed in significant number of infected individuals. tuberculosis has been demonstrated among those individuals, with higher prevalence than in the general population, suggesting that there is an increased risk for this comorbidity. we report the case of an individual coinfected with htlv-i and htlv-ii, suffering from an insidious meningoencephalomyelitis caused by mycobacterium tuberculosis. the patient was a 44 years old man successfully treated with steroids and antituberculous drugs, improving clinically and turning to a negative pcr and to a normal blood-cerebrospinal fluid barrier.
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