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Search Results: 1 - 10 of 35272 matches for " Eduardo Gomes Ferraz "
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Sealing of temporary cements in endodontics
Eduardo Gomes Ferraz,Carolina Montagn Carvalho,Maria Cristina Teixeira Cangussu,Sílvio Albergaria
RGO : Revista Gaúcha de Odontologia , 2009,
Abstract: Objective: The aim of this study was to assess the coronal leakage of three temporary cements in endodontics: Bioplic (Biodinamica, Londrina, Brazil), IRM (Dentsply, Petrópolis, Brazil) and Coltosol (Vigodent, Bonsucesso, Brazil). Methods: Forty human pre-molars were divided into four groups: I (Bioplic + adhesive system), II (Bioplic , Biodinamica, Londrina, Brasil), III (IRM , Dentsply, Petrópolis, Brasil), and IV (Coltosol , Vigodent, Bonsucesso, Brasil). The teeth were immersed in 1% Rodamine and kept at 37°C for 24h. They were then thermal cycled for seven days. Temperatures ranged between 5, 37 and 50°C. After longitudinal sectioning the leakage was measured in mm and statistical analysis was performed using the ANOVA and Tukey tests with a level of significance of 5%.Results: In the group in which Bioplic was used with adhesive, a lower level of leakage was detected (0.37 ± 0.24). There was significant difference (p<0.05) between groups I and III, I and IV, II and III. Conclusion: It was concluded that all the tested material showed coronal leakage and that the use of the (Bioplic Biodinamica, Londrina, Brasil)plus adhesive system showed the lowest level of leakage.
Epidemiology of acute hepatitis B in a university hospital in S?o Paulo, Brazil: retrospective study of two five-year periods
Ferraz, Maria Lúcia Gomes;Yoradjian, Alessandra;Barbieri, Andrea;Figueiredo, Virginia;Lopes Neto, Edmundo;Cruz, Cibele Nascimento;Silva, Antonio Eduardo;
Sao Paulo Medical Journal , 1998, DOI: 10.1590/S1516-31801998000300002
Abstract: context: hbv infection is endemic in brazil and acute hbv infection is still a common disease. objective: to analyze incidence, risk factors and evolution of acute hbv infection. setting: university hospital. patients: 357 patients with acute hbv infection, comparing two periods: 1985-1989 vs. 1990-1994. results: the overall incidence declined from 50 new cases/year in 1985-89 (30% of all cases) to 25 new cases/year in 1990-94 (8% of all cases). transmission among male homosexuals (3.9% of cases in 85-89) declined to 1.3% in 90-94 (p>0.05). amongst health care workers (hcw) it declined from 8.2% to 2.0% (p=0.02). conversely, heterosexual transmission increased from 4.8% to 10.1% (p=0.06). chronification of hbv infection following the acute episode was observed in 1.7%. fulminant hepatic failure was seen in 3.4%. however, 27.2% of patients were lost to follow-up before normalization of the biochemical tests. conclusions: the different patterns of risk factors observed is probably related to measures for preventing aids and to hcw vaccination programs. chronification following acute episodes was not a common event.
In vitro evaluation of the effectiveness of the chemomechanical preparation against Enterococcus faecalis after single- or multiple-visit root canal treatment
Gurgel-Filho, Eduardo Diogo;Vivacqua-Gomes, Nilton;Gomes, Brenda Paula Figueiredo de Almeida;Ferraz, Caio Cezar Randi;Zaia, Alexandre Augusto;Souza-Filho, Francisco José de;
Brazilian Oral Research , 2007, DOI: 10.1590/S1806-83242007000400005
Abstract: the purpose was to assess the elimination of enterococcus faecalis in vitro in human mandibular premolars after chemomechanical preparation with or without the use of a calcium hydroxide dressing. after 60 days of contamination with e. faecalis, the root canals were prepared using the crown-down technique combined with 2% chlorhexidine gel irrigation. then, the specimens were divided into two experimental groups, treated in a single visit or in multiple visits, and two control groups. the multiple-visit group received a dressing with calcium hydroxide for 14 days (calentm) and the single-visit group did not receive any medication. in the two control groups, the canals were filled with bhi after chemomechanical preparation with 2% chlorhexidine gel or distilled water. microbial samples were taken from the root canals for colony forming unit count for each phase of the treatment using sterile paper points inside the root canal lumen. data were ranked and analyzed by the kruskal-wallis statistical test. the residual microbial colonies were then assessed. the results showed that chemomechanical preparation using 2% chlorhexidine gel with no intra-canal dressing reduced by 100% the e. faecalis contamination of the root canal lumen. the calcium-hydroxide group that received the 14-day intra-canal dressing allowed a small number of bacteria to grow between visits, but without statistical differences between groups.
Longitudinal Study of a Human Drug-Induced Model of Autoantibody to Cytoplasmic Rods/Rings following HCV Therapy with Ribavirin and Interferon-α
Gerson Dierley Keppeke, Eunice Nunes, Maria Lucia Gomes Ferraz, Eduardo Ant?nio Benedito Silva, Celso Granato, Edward K. L. Chan, Luís Eduardo C. Andrade
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0045392
Abstract: Background A novel pattern in the indirect immunofluorescence antinuclear antibody assay on HEp-2 cells (IIF-HEp-2) characterized by cytoplasmic rods and rings (RR) was reported in HCV patients, but stringent disease specificity studies and longitudinal analysis are lacking. We investigated the clinical significance of anti-RR in an HCV cohort with up to a 12-month treatment follow up. Methodology/Results 597 patients (342 HCV, 55 HCV/HIV, 200 non-HCV) were screened and titered for anti-RR. Serial samples were available from 78 of 176 treated and 27 of 166 untreated patients. Anti-RR was detected in 14.1% of 342 HCV patients, 9.1% of 55 HCV/HIV, 3.4% of 29 Hepatitis B, and none of 171 non-HCV (p<0.0001; HCV versus non-HCV). Anti-RR was present in 38% of 108 patients receiving interferon-α/ribavirin, but none in 26 receiving either interferon-α or ribavirin, or 166 untreated patients (p<0.0001). Other IIF-HEp-2 patterns were more frequently associated with interferon-α treatment alone (52.2%) as compared to interferon-α/ribavirin (25%), ribavirin alone (33.3%), and no therapy (26.5%). Anti-RR frequency was not associated with sex, age, ethnicity, HCV genotype or viral load. Anti-RR occurred only after initiation of treatment, beginning as early as 1 month (6%), but by the sixth month >47% tested positive for anti-RR. The anti-RR titer generally increased with sustained treatment and remained high in 53% of patients. After treatment, anti-RR titer was negative in 41%. Non-responders to HCV therapy were 77% in anti-RR-positive versus 64% in anti-RR-negative patients. Response to treatment was not associated with anti-RR titer or the dynamics of anti-RR reactivity during and after treatment. Conclusions The exquisite association of anti-RR reactivity with combined interferon-α/ribavirin therapy in HCV patients represents a unique model for drug-induced autoantibody generation in humans as demonstrated by the fact that a significant fraction of patients who have anti-RR during therapy becomes anti-RR-negative after completion of therapy.
Cotidiano e Dan a na periferia: reflex es para uma prática educativa Daily Life and Dance in the Outskirts: Reflexions for an Educational Practice Cuotidiano y Danza en la Periferia: Reflexiones para una Práctica Educativa
Thais Gomes Ferraz
Pensar a Prática , 2006, DOI: 19806183/rpp.v6i0.59
Abstract: O estudo envolve uma pesquisa na comunidade periférica Shangri-Lá, município de Goiania, onde foram efetuadas interven es, observa es e entrevistas com crian as e m es participantes de um projeto de educa o ambiental. Embasados no referencial teórico de Agnes Heller e Newton Duarte, procuramos identificar e discutir o cotidiano e os preconceitos referentes à dan a oriundos na comunidade, com o intuito de promover reflex es pertinentes à prática educativa. Neste sentido, a constru o de comportamentos e pensamentos com respeito à dan a é analisada em processo de rela es com diferentes meios e institui es. PALAVRAS-CHAVE: Cotidiano - Preconceito - Dan a - Educa o. This study involves a research work carried out in a neighborhood named “Shangri-lá”, located in the outskirts of town. In this community, we interacted, observed, and interviewed children and their mothers as they took part in an Environmental Education project. I have based my research on the theoretical works of Agnes Heller and Newton Duarte,and I try to identify and discuss daily life and prejudicial ideas about dance that exist in this community, in order to promote reflexions about educational practices. In this sense, theconstruction of behavioral patterns and thoughts about dance are analyzed in the process of establishing links with diffent media and institutions. KEY WORDS: Daily Life - Prejudice - Dance - Education. El estudio envuelve una investigación en la comunidad periférica shangri-lá. En esta comunidad, intervenciones, observaciones y entrevistas fueron efectuadas con ni os y madres participantes de un proyecto de Educación Ambiental. Baseándose en el referencial teórico de Agnes Heller y Newton Duarte, busco identificar y discutir lo cotidiano y los prejuicios referentes a la danza oriundos en la comunidad, con el propósito de promover reflexiones pertinentes a la práctica educativa. En este sentido, la construcción de comportamientos y pensamientos referentes a la danza, son analizados en proceso de relaciones con diferentes medios e instituciones. PALABRAS CLAVES: Cuotidiano - Prejuicio - Danza - Educación.
O outro no trabalho: mulher e gest o The otherness at work: woman and management
Almiralva Ferraz Gomes
Rege : Revista de Gest?o , 2005,
Abstract: Este trabalho reveste-se de importancia porque o universo do trabalho produtivo é historicamente associado aos homens e apenas recentemente algumas investiga es vêm demonstrando interesse pelos estudos de gênero. Em raz o da complexidade da temática "gênero nas organiza es", neste trabalho só será possível apresentar uma breve revis o e algumas reflex es sobre o assunto. O texto se prop e a analisar, brevemente, a mulher e suas rela es no mundo do trabalho. Mas, antes mesmo de tratar da rela o da mulher com o mundo do trabalho, é pertinente fazer uma breve retrospectiva do mundo do trabalho em si e do trabalho feminino na atualidade. Em seguida, discute-se a implanta o de um negócio próprio como alternativa n o só de ocupa o laboral, mas também de realiza o profissional, e apontam-se alguns dados que caracterizam parcialmente a gest o feminina, de acordo com alguns pesquisadores contemporaneos. Por fim, a discuss o se encerra apontando a necessidade de um aprofundamento teórico que possibilite o amadurecimento de futuras discuss es. Productive work is historically associated with men and only recently some investigations have demonstrated interest in gender studies. However, due to the complexity of the subject of gender in the organizations, only a brief review of the literature that orients the thinking on the subject could be presented. Initially a concise retrospective on the universe of the work itself was presented prior to an analysis of women and their current relationships in this universe. The initiative of undertaking a self-owned business was then discussed, not only as an alternative of work activity but as a professional achievement as well. Some information of contemporary researchers that partially characterizes management by women was cited. The discussion concludes that further in depth theoretical work is necessary to foster more mature future research.
Effect of host-related factors on the intensity of liver fibrosis in patients with chronic hepatitis C virus infection
Costa, Luciano Bello;Ferraz, Maria Lucia Gomes;Perez, Renata M.;Ferreira, Adalgisa S.;Matos, Carla Adriana L.;Lanzoni, Valéria P.;Silva, Ant?nio Eduardo;
Brazilian Journal of Infectious Diseases , 2002, DOI: 10.1590/S1413-86702002000500002
Abstract: there is increasing interest in the identification of factors associated with liver disease progression in patients infected with hepatitis c virus (hcv). we assessed host-related factors associated with a histologically advanced stage of this disease and determined the rate of liver fibrosis progression in hcv-infected patients. we included patients submitted to liver biopsy, who were anti-hcv and hcv rna positive, who showed a parenteral risk factor (blood transfusion or intravenous drug use), and who gave information about alcohol consumption.patients were divided into two groups for analysis: group 1 - grades 0 to 2; group 2 - grades 3 to 4. the groups were compared in terms of sex, age at the time of infection, estimated duration of infection and alcoholism. the rate of fibrosis progression (index of fibrosis) was determined based on the relationship between disease stage and duration of infection (years). logistic regression analysis revealed that age at the time of infection (p<0.01; 95% ci 1.06-1.22) and the duration of infection (p<0.01; 95% ci 1.06-1.32) were independently associated with a more advanced stage of hepatitis c. the median index of fibrosis was 0.14 for the group as a whole. a significant difference in the index of fibrosis was observed between patients aged < 40 years at infection (median = 0.11) and patients aged 3 40 years (median = 0.47). the main factors associated with a more rapid fibrosis progression were age at the time of infection and the estimated duration of infection. patients who acquired hcv after 40 years of age showed a higher rate of fibrosis progression.
Photosynthetic responses of young cashew plants to varying environmental conditions
Souza, Rogéria Pereira de;Ribeiro, Rafael Vasconcelos;Machado, Eduardo Caruso;Oliveira, Ricardo Ferraz de;Silveira, Joaquim Albenísio Gomes da;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005000800002
Abstract: the aim of this study was to characterize gas exchange responses of young cashew plants to varying photosynthetic photon flux density (ppfd), temperature, vapor-pressure deficit (vpd), and intercellular co2 concentration (ci), under controlled conditions. daily courses of gas exchange and chlorophyll a fluorescence parameters were measured under natural conditions. maximum co2 assimilation rates, under optimal controlled conditions, were about 13 mmol m-2 s-1 , with light saturation around 1,000 mmol m-2 s -1. leaf temperatures between 25oc and 35oc were optimal for photosynthesis. stomata showed sensitivity to co2, and a closing response with increasing ci. increasing vpd had a small effect on co2 assimilation rates, with a small decrease above 2.5 kpa. stomata, however, were strongly affected by vpd, exhibiting gradual closure above 1.5 kpa. the reduced stomatal conductances at high vpd were efficient in restricting water losses by transpiration, demonstrating the species adaptability to dry environments. under natural irradiance, co2 assimilation rates were saturated in early morning, following thereafter the ppfd changes. transient fv/fm decreases were registered around 11h, indicating the occurrence of photoinhibition. decreases of excitation capture efficiency, decreases of effective quantum yield of photosystem ii, and increases in non-photochemical quenching were consistent with the occurrence of photoprotection under excessive irradiance levels.
a-Interferon therapy for HBV-related glomerulonephritis
Lopes Neto, Edmundo Pessoa de Almeida;Lopes, Lucila Valente;Kirsztajn, Gianna Mastroianni;Cruz, Cibele Nascimento;Ferraz, Maria Lucia Gomes;Silva, Antonio Eduardo Benedito;
Sao Paulo Medical Journal , 1998, DOI: 10.1590/S1516-31801998000500008
Abstract: we report a case of a patient with hepatitis b virus (hbv)-related membranous glomerulonephritis (mgn) who showed improvement after interferon-a (ifn-a) therapy. a 35-year-old man with nephrotic syndrome and hbv antigens received a 24-week course of ifn-a. at the end of therapy there was an elevation in the level of plasma aminotransferase and an increase in proteinuria, which were followed by antigen/antibody seroconversion. this "flare-up" before seroconversion suggests an increase in disease activity in the liver and kidney, demonstrating in vivo hbv involvement in mgn.
Voto e Classe: notas sobre alguns estudos recentes
Ferraz, Sérgio Eduardo;
Opini?o Pública , 2009, DOI: 10.1590/S0104-62762009000200007
Abstract: this article aims to provide an approach on a possible inflexion ongoing in contemporary electoral comparative studies, challenging the consensus reached in the 1980s and 1990s around the idea of the loss of the relative importance of social divisions and, in particular, classists, as the explanatory variable of electoral behavior in advanced democracies. in that sense, the text presents and discusses samples of recent international studies that converge on the revaluation of social class as a source of guidance on vote. it is pointed out the attributed importance by this new literature on the methodologic question and in the review of empirical information collected in the last decades by vote, especially some of the results that suggest a new understanding of the relationship between class and suffrage in mature democracies.
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