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au:NASCIMENTO, EDSON F.

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New lectin isolated from the tropical sponge Haliclona (Reniera) implexiformis (Hechtel, 1965) shows antibiofilm effect
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ANDRADE, FRANCISCO R.N.

; TABOSA, PEDRO A.S.

; TORRES, RENATO C.F.

; CARNEIRO, RÔMULO F.

; VASCONCELOS, MAYRON A.

; ANDRADE, ALEXANDRE L.

; NASCIMENTO, ELIELTON

; PINHEIRO, ULISSES

; TEIXEIRA, EDSON H.

; NAGANO, CELSO S.

; SAMPAIO, ALEXANDRE H.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 N. 1 elocation e20220379

Abstract: En | Text: En | PDF: En

Abstract A lectin from the marine sponge Haliclona (Reniera) implexiformis (HiL) was isolated by affinity chromatography on Sepharose™ matrix. HiL showed specificity for galactose and its derivatives. The glycoproteins porcine stomach mucin (PSM) and bovine stomach mucin (BSM) were potent inhibitors. Hemagglutinating activity of the lectin was maximal between pH 5.0 and 9.0. The lectin remained active until 60°C. The presence of CaCl2 and EDTA did not affect the hemagglutinating activity. In SDS-PAGE, HiL showed a single band of 20 kDa under reduced conditions, whereas in the non-reducing conditions, it showed a band of 20 kDa and one additional band of 36 kDa. The average molecular mass determined by Electrospray Ionization Mass Spectrometry (ESI-MS) was 35.874 ± 2 Da in native and non-reducing conditions, whereas carboxyamidomethylated-lectin showed 18,111 Da. These data indicated that HiL consists in a dimer formed by identical subunits linked by disulfide bonds. Partial amino acid sequence of HiL was determined by mass spectrometry, and revealed that it is a new type of lectin, which showed no similarity with any protein. Secondary structure consisted of 6% α-helice, 31% β-sheet, 18% β-turn and 45% random coil. HiL showed significant reduction in the number of viable cells of Staphylococcus biofilms.

https://doi.org/10.1590/0001-3765202320220379

Healthcare workers exposed to COVID-19 patients present an inflammatory status and Th2/Th17/Th22 immune profile: findings from before vaccine application in Brazil
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AQUINO, RODRIGO CESAR A. DE

; BARROS, BÁRBARA RAFAELA S.

; SILVA, GUILHERME ANTONIO S.

; SOUSA, GEORON F. DE

; SOUZA, EDSON B. DE

; SILVA, DYEGO R.C.

; NASCIMENTO, ARIONE V. DO

; SÁ, IGOR W.A. DE

; LIMA, ELKER L.S. DE

; SILVA, BÁRBARA O.

; LIMA, LUÍSA P.O. DE

; VIEIRA, AMANDA M.

; BARBOSA NETO, ADAUTO G.

; MARCOS, BIANCA F. SÃO

; SILVA, ANNA JÉSSICA D.

; OLIVEIRA, TALITA HELENA ARAÚJO DE

; CARVALHO, BRUNO M.

; MUNIZ, MARIA TEREZA C.

; FREITAS, ANTONIO CARLOS DE

; CAMPELO JÚNIOR, EVÔNIO B.

; MELO, CRISTIANE M.L. DE

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Suppl. 1 elocation e20220502

Abstract: En | Text: En | PDF: En

Abstract Healthcare workers present an increased risk of contagion for the SARS-CoV-2 virus due to their labor exposure. Here, we describe the clinical, laboratory, and immunological characteristics of healthcare workers, before vaccine application, exposed to SARS-CoV-2-infected patients. We collected sociodemographic, clinical, and laboratory information from 50 professionals who worked during the COVID-19 pandemic at the Clinical Hospital of the Northwest in Brazil. The results showed that most workers are women, over 50 years old, and worked as nursing technicians. Approximately 56% of workers were positive for a previous infection by RT-PCR and/or anti-SARS-CoV-2-immunoglobulin tests. Increased levels of hematocrit, neutrophils, NK lymphocytes, and fibrinogen, were found in positive healthcare workers, suggesting a light inflammatory status. The immunological findings showed an increase in IL-17 production and a Th2/Th17/Th22 profile followed by high serology for anti-SARS-CoV-2 IgM and IgG. Those data reveal the importance of studies with healthcare workers to investigate if the continuous exposition to the virus may result in chronic activation of the immune system and/or pulmonary inflammation in this target group.

https://doi.org/10.1590/0001-3765202320220502

Epoxy/Graphite Composite Electrode Modified with Recycled Silver Nanoparticles: An Eco-Friendly Strategy to Improve Lead Detection
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Cabral, Taíssa S.

; Nascimento, Suéllen F. L. do

; Faria, Lucas V. de

; Lisboa, Thalles P.

; Borges, Pedro H. S.

; Nossol, Edson

; Semaan, Felipe S.

; Dornellas, Rafael M.

; Pacheco, Wagner F.

Journal of the Brazilian Chemical Society

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2023, Volume 34 N. 12 Pages 1788 - 1795

Abstract: En | Text: En | PDF: En

In this work, silver nanoparticles (AgNPs) obtained from photographic waste were synthesized and electrodeposited via cyclic voltammetry using epoxy-graphite composite as an electrochemical substrate. Both electrodes, unmodified (Epoxy/C) and modified (Epoxy/C/AgNPs), were characterized electrochemically by electrochemical impedance spectroscopy (EIS), charge transfer constant (K0), and electroactive area. The modified electrode provided lower charge transfer resistance (275 Ω), more kinetically favored electron transfer (K0 = 1.15 × 10-3 cm s-1), and a 1.7-fold increase in the active area compared to the unmodified electrode. Additional characterizations by scanning electron microscopy (SEM) and Raman spectroscopy confirmed the presence of AgNPs structures on the carbonaceous surface. As a proof of concept, Pb2+ was used as a model analyte, and a square wave anodic stripping voltammetry (SWASV) method was developed to evaluate the analytical performance of both electrodes. A wider linear range (4.0 to 40.0 µg L-1), the appropriate limit of detection (1.2 µg L-1), and a 6-fold increase in sensitivity were found using the modified electrode, suggesting that the AgNPs significantly contributed to the performance of the electrode. The proposed method was applied to three real water samples, where the Pb2+ levels varied from 11.3 to 19.5 µg L-1. The proposed protocol (reuse of silver waste) has proven to be a powerful tool for improving the detection of Pb2+, which can be helpful for other electrochemical sensing applications in locations with minimal infrastructure.

https://doi.org/10.21577/0103-5053.20230071

Deep sea ecosystem exploration and ‘health check’: sampling strategy and methods applied during the iAtlantic_BR10_Petrobras cruise in the Santos Basin, Southwest Atlantic
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Perez, Jose Angel A.

; Barros Neto, Halésio M.C. de

; Arantes, Renata C.M.

; Gaurisas, Daniela Y.

; Silva, Camila F.

; Alves, Fernanda Maria M.

; Costa, Júlia A.

; Eloi, Paula D.C.

; Fonseca, Thayse S.

; Gavazzoni, Lucas

; Lonskis, Isabella da S.

; Nardi, Ricardo U.

; Nascimento, Pedro O.

; Rodrigues, João Vitor M.

; Santos, Ana Lara F. dos

; Santos, Edson C. dos

; Schroeder, Rafael

; Silva, Luis Carlos da

; Souza, Fernanda dos S.S. de

; Bernardino, Ângelo F.

; Cavalcanti, Guarani H.

; Lindner, Alberto

; Mahiques, Michel M. de

; Millo, Christian

; Reis, Priscila

; Sweetman, Andrew K.

; Roberts, J. Murray

Ocean and Coastal Research

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2023, Volume 71 elocation e23046

Abstract: En | Text: En | PDF: En

Abstract The iAtlantic Project has established an international collaborative strategy to improve mapping and characterization of deep and open ocean ecosystems in understudied regions of the Atlantic and evaluate their health. In December 2022, the first iAtlantic expedition in the South Atlantic set off to map and explore seafloor ecosystems in the Santos Basin slope (200-1,000 m depths) in collaboration with the Petrobras ‘Santos Basin - Regional Characterization Project.’ The 17-day ‘iAtlantic_BR10-Petrobras’ cruise was conducted on board the research vessel NPqHOc Vital de Oliveira (Brazilian Navy) and performed (a) water column structure characterization, (b) seafloor morphology mapping, (c) description of benthic habitats and communities by seafloor imagery and biological/ geological sampling, and (d) ex-situ experiments to assess the functioning of sedimentary ecosystems and their responses to climate-related environmental changes. This study describes the rationale behind the iAtlantic_BR10-Petrobras cruise science plan, reports its sampling strategy and methods, and summarizes its collected data and preliminary results.

https://doi.org/10.1590/2675-2824071.23069jaap

Purification, biochemical characterization of a lectin from marine sponge Ircinia strobilina and its effect on the inhibition of bacterial biofilms
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ALMEIDA, ALEXANDRA S. DE

; MENDONÇA, DAYARA N.M.

; CARNEIRO, RÔMULO F.

; PINHEIRO, ULISSES

; NASCIMENTO, ELIELTON FRANCISCO DO

; ANDRADE, ALEXANDRE L.

; VASCONCELOS, MAYRON A. DE

; TEIXEIRA, EDSON H.

; NAGANO, CELSO S.

; SAMPAIO, ALEXANDRE H.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Suppl. 2 elocation e20220619

Abstract: En | Text: En | PDF: En

Abstract A new lectin from marine sponge Ircinia strobilina, denominated IsL, was isolated by combination of affinity chromatography in Guar gum matrix followed by size exclusion chromatography. IsL was able to agglutinate native and enzymatically treated rabbit erythrocytes, being inhibited by galactosides, such as α-methyl-D-galactopyranoside, β-methyl-D-galactopyranoside and α-lactose. IsL hemagglutinating activity was stable at neutral to alkaline pH, however the lectin loses its activity at 40° C. The molecular mass determinated by mass spectrometry was 13.655 ± 5 Da. Approximately 40% of the primary structure of IsL was determined by mass spectrometry, but no similarity was observed with any protein. The secondary structure of IsL consists of 28% α-helix, 26% β-sheet, and 46% random region, as determined by dichroism circular. IsL was a calcium-dependent lectin, but no significant variations were observed by circular dichroism when IsL was incubated in presence of calcium and EDTA. IsL was not toxic against Artemia nauplii and did not have antimicrobial activity against bacterial cells. However, the IsL was able to significantly inhibit the biofilm formation of Staphylococcus aureus and Staphylococcus epidermidis.

https://doi.org/10.1590/0001-3765202320220619

Memory elicitation, T-cell response and antibody production: an independent study of an inactivated entire virus vaccine (Coronavac)
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SOUZA-SILVA, GUILHERME ANTONIO DE

; AQUINO, RODRIGO CESAR A. DE

; SOUSA, GEORON F. DE

; BARROS, BÁRBARA RAFAELA S.

; LIMA, MARÍLLIA RAPHAELLA C.F. DE

; CRUZ, LEONARDO C.O.

; MARCOS, BIANCA F. SÃO

; SILVA, ANNA JÉSSICA D.

; TALES, APARECIDA VIRGÍNIA S.

; DINIZ, MADI V.

; LIMA, MÔNICA MARIA C.

; SÁ, IGOR W.A. DE

; RODRIGUES, FÁBIO AUGUSTO C.

; SOUZA, EDSON B. DE

; NASCIMENTO, ARIONE V. DO

; VIEIRA, AMANDA M.

; CARVALHO, BRUNO M. DE

; CAMPELO JÚNIOR, EVÔNIO B.

; FREITAS, ANTONIO CARLOS DE

; MELO, CRISTIANE M.L. DE

Anais da Academia Brasileira de Ciências

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2022, Volume 94 N. 3 elocation e20211590

Abstract: En | Text: En | PDF: En

Abstract Health professionals working to mitigate the COVID-19 pandemic are one of the main risk groups for the disease, being prioritized for vaccination. Considering this, the aim of this study was to analyze the immune response of these professionals immunized with CoronaVac in the first and second doses. Blood samples were collected after the first and second doses of the vaccine (CoronaVac) and used to investigate hematological and biochemical parameters, analysis of immunoglobulin production, cytokines, and gene expression profile, as well as the identification of subsets of immune cells. Post-first dose immunological phenotypic memory (CD27+) profiles (T CD4+, TCD8+ and CD19+) showed a significant increase, as did Monocyte APCs (CD80+HLA-DR+) in relation to the second dose. The cytokines IL-2, IL-6 and IFN-° showed increased values in relation to the other analyzed cytokines. The Th2/Th17 profile in the second dose was characterized by gene expression analysis. The production of IgM and IgG after vaccination showed statistically significant values in the comparison between doses. CoronaVac showed activation of APCs monocytes, memory response of T and B lymphocytes, with immunoglobulins production. This set of responses is characterized by the Th2/Th17 immunological profile.

https://doi.org/10.1590/0001-3765202220211590

Disfunção miocárdica e alterações no trânsito de cálcio intracelular em ratos obesos
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Lima-Leopoldo, Ana Paula

; Leopoldo, André S.

; Sugizaki, Mário M.

; Bruno, Alessandro

; Nascimento, André F.

; Luvizotto, Renata A. M.

; Oliveira Júnior, Silvio A. de

; Castardeli, Edson

; Padovani, Carlos R.

; Cicogna, Antonio C.

Arquivos Brasileiros de Cardiologia

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sep 2011, Volume 97 N. 3 Pages 232 - 240

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

FUNDAMENTO: Vários mecanismos têm sido propostos contribuir para a disfunção cardíaca em modelos de obesidade, tais como alterações nas proteínas do trânsito de cálcio (Ca+2) e nos receptores beta-adrenérgicos. Todavia, o papel desses fatores no desenvolvimento da disfunção miocárdica induzida pela obesidade ainda não está claro. OBJETIVO: Este estudo pretende investigar se a obesidade induzida por um ciclo de dieta hipercalóricas resulta em disfunção cardíaca. Além disso, foi avaliado se essa alteração funcional em ratos obesos está relacionada com o prejuízo do trânsito de Ca+2 e do sistema beta-adrenérgico. MÉTODOS: Ratos Wistar machos, 30 dias de idade, foram alimentados com ração padrão (C) e um ciclo de cinco dietas hipercalóricas (Ob) por 15 semanas. A obesidade foi definida pelo aumento da porcentagem de gordura corporal dos ratos. A função cardíaca foi avaliada mediante análise isolada do músculo papilar do ventrículo esquerdo em condições basais e após manobras inotrópicas e lusitrópicas. RESULTADOS: Em comparação com o grupo controle, os ratos obesos apresentaram aumento da gordura corporal e intolerância a glicose. Os músculos dos ratos obesos desenvolveram valores basais semelhantes; entretanto, as respostas miocárdicas ao potencial pós-pausa e aumento de Ca+2 extracelular foram comprometidas. Não houve alterações na função cardíaca entre os grupos após a estimulação beta-adrenérgica. CONCLUSÃO: A obesidade promove disfunção cardíaca relacionada com alterações no trânsito de Ca+2 intracelular. Esse prejuízo funcional é provavelmente ocasionado pela redução da atividade da bomba de Ca+2 do retículo sarcoplasmático (SERCA2a) via Ca+2 calmodulina-quinase.

BACKGROUND: Several mechanisms have been proposed to contribute to cardiac dysfunction in obesity models, such as alterations in calcium (Ca2+) handling proteins and β-adrenergic receptors. Nevertheless, the role of these factors in the development of myocardial dysfunction induced by obesity is still not clear. OBJECTIVE: The purpose of this study was to investigate whether obesity induced by hypercaloric diets results in cardiac dysfunction. Furthermore, it was evaluated whether this functional abnormality in obese rats is related to abnormal Ca2+ handling and the β-adrenoceptor system. METHODS: Male 30-day-old Wistar rats were fed with standard food (C) and a cycle of five hypercaloric diets (Ob) for 15 weeks. Obesity was defined as increases in body fat percentage in rats. Cardiac function was evaluated by isolated analysis of the left ventricle papillary muscle under basal conditions and after inotropic and lusitropic maneuvers. RESULTS: Compared with the control group, the obese rats had increased body fat and glucose intolerance. The muscles of obese rats developed similar baseline data, but the myocardial responsiveness to post-rest contraction stimulus and increased extracellular Ca2+ were compromised. There were no changes in cardiac function between groups after β-adrenergic stimulation. CONCLUSION: Obesity promotes cardiac dysfunction related to changes in intracellular Ca2+ handling. This functional damage is probably caused by reduced cardiac sarcoplasmic reticulum Ca2+ ATPase (SERCA2) activation via Ca2+ calmodulin kinase.

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Classification of journals in the QUALIS System of CAPES URGENT need of changing the criteria!
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Andriolo, Adagmar

; Souza, Aécio Flávio Meireles

; Farias, Alberto Queiroz

; Barbosa, Alfredo José Afonso

; França Netto, Antonio Spina

; Hernandez, Arnaldo José

; Camargos, Aroldo F.

; Barraviera, Benedito

; Kadunc, Bogdana Victoria

; Caramelli, Bruno

; Campos, Carlos Eduardo Aguilera

; Brites, Carlos

; Nascimento, Dejair Caitano do

; Braile, Domingo M.

; Goldenberg, Dov Charles

; Baracat, Edmund Chada

; Kimura, Edna T.

; Marchiori, Edson

; Vieira, Eduardo de Paula

; Almeida, Eros Antônio de

; Jotz, Geraldo Pereira

; Camanho, Gilberto

; Friedman, Gilberto

; Cerri, Giovanni Guido

; Duarte, Ivomar Gomes

; Costa, Izelda Maria Carvalho

; Mello Júnior, João Ferreira de

; Faintuch, Joel

; Martinez, José Antônio Baddini

; Antonio Livramento, José

; Manso, José Eduardo Ferreira

; Amaral, José Luiz Gomes do

; Battistella, Linamara Rizzo

; Machado, Luís dos Ramos

; Moreira, Luiz Felipe P.

; Gebrim, Luiz Henrique

; Madeira, Marcelo

; Riberto, Marcelo

; Bastos, Marcus

; Falcão, Mário Cícero

; Conceição, Mario J. da

; Silva, Mauricio Rocha e

; Ruiz, Milton Artur

; Shibata, Milton K.

; Santiago, Mittermayer Barreto

; Andreollo, Nelson Adami

; Malafaia, Osvaldo

; Martins, Regina Helena Garcia

; Procianoy, Renato Soibelmann

; Baroudi, Ricardo

; Fuller, Ricardo

; Viebig, Ricardo Guilherme

; Nitrini, Ricardo

; Moura, Rita Cristina Mainieri R. de

; Dedivitis, Rogério

; Damião, Ronaldo

; Lianza, Sergio

; Rode, Sigmar de Mello

; Yoshida, Winston Bonetti

; Handar, Zuher

Arquivos de Neuro-Psiquiatria

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apr 2010, Volume 68 N. 2 Pages 327 - 329

Abstract: En | Text: En | PDF: En

3236 downloads Cited 9 times in SciELO

Classificação dos Periódicos no Sistema QUALIS da CAPES - a Mudança dos Critérios é URGENTE!
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Andriolo, Adagmar

; Souza, Aécio Flávio Meireles

; Farias, Alberto Queiroz

; Barbosa, Alfredo José Afonso

; França Netto, Antonio Spina

; Hernandez, Arnaldo José

; Camargos, Aroldo F.

; Barraviera, Benedito

; Kadunc, Bogdana Victoria

; Caramelli, Bruno

; Campos, Carlos Eduardo Aguilera

; Brites, Carlos

; Nascimento, Dejair Caitano do

; Braile, Domingo M.

; Goldenberg, Dov Charles

; Kimura, Edna T

; Marchiori, Edson

; Vieira, Eduardo de Paula

; Almeida, Eros Antônio de

; Jotz, Geraldo Pereira

; Camanho, Gilberto

; Friedman, Gilberto

; Cerri, Giovanni Guido

; Duarte, Ivomar Gomes

; Costa, Izelda Maria Carvalho

; Mello Júnior, João Ferreira de

; Faintuch, Joel

; Martinez, José Antônio Baddini

; Livramento, José Antonio

; Manso, José Eduardo Ferreira

; Battistella, Linamara Rizzo

; Machado, Luís dos Ramos

; Moreira, Luiz Felipe P.

; Gebrim, Luiz Henrique

; Madeira, Marcelo

; Riberto, Marcelo

; Bastos, Marcus

; Falcão, Mário Cícero

; Conceição, Mario J. da

; Rocha e Silva, Mauricio

; Ruiz, Milton Artur

; Shibata, Milton K.

; Santiago, Mittermayer Barreto

; Andreollo, Nelson Adami

; Malafaia, Osvaldo

; Martins, Regina Helena Garcia

; Procianoy, Renato Soibelmann

; Baroudi, Ricardo

; Fuller, Ricardo

; Viebig, Ricardo Guilherme

; Nitrini, Ricardo

; Moura, Rita Cristina Mainieri R. de

; Dedivitis, Rogério

; Damião, Ronaldo

; Lianza, Sergio

; Rode, Sigmar de Mello

; Yoshida, Winston Bonetti

; Handar, Zuher

Arquivos Brasileiros de Cardiologia

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mar 2010, Volume 94 N. 3 Pages 290 - 291

Abstract: Pt | Text: Pt | PDF: Pt

3995 downloads Cited 2 times in SciELO

10.

Chemical composition and larvicidal activity of the essential oils of Cordia leucomalloides and Cordia curassavica from the Northeast of Brazil
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Santos, Renata P.

; Nunes, Edson P.

; Nascimento, Ronaldo F.

; Santiago, Gilvandete Maria P.

; Menezes, Gustavo Henrique A.

; Silveira, Edilberto R.

; Pessoa, Otília Deusdênia L.

Journal of the Brazilian Chemical Society

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oct 2006, Volume 17 N. 5 Pages 1027 - 1030

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Os óleos essenciais das folhas de Cordia leucomalloides e Cordia curassavica foram obtidos por hidrodestilação e suas composições químicas determinadas por uma combinação de CG-EM e CG-DIC. Como resultado, vinte e três componentes foram identificados em ambos os óleos, representando 98,6 e 91,2% da composição volátil. O óleo essencial de C. leucomalloides foi caracterizado por uma alta percentagem de sesquiterpenos (90,6%), sendo delta-cadineno (17,4%), (E)-cariofileno (15,7%), biciclogermacreno (12,5%) e germacreno D (11,2%) os majoritários. Por outro lado, o óleo de C. curassavica mostrou proporções similares de monoterpenos (47,3%) e sesquitepenos (43,9%), entre os quais alfa-pineno (20,5%), beta-pineno (13,1%), (E)-cariofileno (12,4%) e biciclogermacreno (13,8%) foram os compostos predominantes. O potencial larvicida dos dois óleos foi avaliado contra larvas no terceiro estágio do mosquito Aedes aegypti. Os resultados mostraram que ambos os óleos apresentaram atividade biológica significativa, particularmente o óleo essencial de C. leucomalloides, o qual foi capaz de matar 98,7% das larvas numa concentração de 100 ppm.

The essential oils obtained from the leaves of Cordia leucomalloides and Cordia curassavica were obtained by hydrodistillation and their chemical compositions determined by a combination of GC-MS and GC-FID. Twenty-three components were tentatively identified in both oils representing 98.6 and 91.2% of the volatile content. The oil of C. leucomalloides was characterized by a large percentage of sesquiterpenes (90.6%), being delta-cadinene (17.4%), (E)-caryophyllene (15.7%), bicyclogermacrene (12.5%) and germacrene D (11.2%) the major ones. On the other hand, the oil of C. curassavica showed similar proportions of monoterpenes (47.3%) and sesquiterpenes (43.9%) among which <FONT FACE=Symbol>a-</FONT>pinene (20.5%), beta-pinene (13.1%), (E)-caryophyllene (12.4%) and bicyclogermacrene (13.8%) were the predominant compounds. The larvicidal potential of the two oils were evaluated against the third-instar of Aedes aegypti larvae. The results showed that both oils exhibited significant activity, particularly the oil of C. leucomalloides which was able to kill 98.7% of the larvae in the concentration of 100 ppm.

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11.

O peso da perda de alimentos para a sociedade: o caso das hortaliças
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Vilela, Nirlene J.

; Lana, Milza M.

; Nascimento, Edson F.

; Makishima, Nozomu

Horticultura Brasileira

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jun 2003, Volume 21 N. 2 Pages 142 - 144

Abstract: Pt | Text: Pt | PDF: Pt

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12.

Identificação das causas de perdas pós-colheita de cenoura no varejo, Brasília-DF
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Lana, Milza M.

; Moita, Antônio Williams

; Nascimento, Edson F. do

; Souza, Geraldo da S. e

; Melo, Mário Felipe de

Horticultura Brasileira

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- Sobre o periódico
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jun 2002, Volume 20 N. 2 Pages 241 - 245

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

As perdas pós-colheita de cenoura em 4 lojas de uma rede de supermercados de Brasília foram avaliadas pelo período de um ano. A amostragem foi realizada em duas etapas: antes da exposição do produto na área de vendas (amostra Qualidade Inicial) e após o descarte das perdas do produto (amostra Descarte). Foram quantificadas a proporção de raízes pequenas, médias e grandes e a incidência dos danos: bifurcação, rachadura, defeitos de formato, doença, praga, dano mecânico e outros. A cenoura comprada pelo supermercado apresentou cerca de 86,88 + 0,66% das raízes na faixa de 12-22 cm. No descarte, diminuiu a proporção de cenouras médias e grandes, enquanto aumentou a proporção de cenouras pequenas e quebradas. A proporção de raízes com ombro verde foi reduzida de 23,74 + 1,11% na amostra Qualidade Inicial para 13,29 + 1,37% na amostra Descarte, indicando que grande parte das raízes com ombro verde foi adquirida pelo consumidor, e neste caso não parece ter sido um fator indutor de perda. Cerca de 51% das cenouras recebidas no supermercado apresentavam algum tipo de dano, sendo os mais importantes defeitos de formato (31,0 + 1,16%), dano mecânico (9,46 + 0,4%) e murcha (4,66 + 0,99%). As principais causas de descarte foram dano mecânico (37,4 + 2,47%), defeitos de formato (32,0 + 2,58%) e murcha (7,6 + 1,59%).

Carrot post-harvest losses were evaluated for one year in four stores of a supermarket chain in Brasilia, Brazil. Sampling was performed at two stages: at reception in the store and after exclusion or removal from retail displays. The proportion of large, middle, small and broken roots was measured. Damaged roots were classified in one of the following categories and measured: splitting, forking, mishaped roots, pathological breakdown, pest damage, mechanical damage, and unidentified damage. About 86,88 + 0,66% of the roots were 12-22 cm long (middle size). Wastage presented a higher proportion of small and broken roots and a lower proportion of middle and large roots. The incidence of green top in waste decreased, when compared to the sample taken before marketing, from 23,74 + 1,11% to 13,29 + 1,37%. This is an indication that a substantial proportion of roots with green tops were sold and therefore this defect do not seem to be a factor inducing loss. About 51% of the roots delivered at the supermarket were damaged and the most important defects were mishaped roots (31,0 + 1,16%), mechanical damage (9,46 + 0,4%), and wilting (4,66 + 0,99%). The main causes of waste were mechanical damage (37,4 + 2,47%), mishaped roots (32,0 + 2,58%) and wilting (7,6 + 1,59%).

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13.

Redução de perdas pós-colheita em tomate de mesa acondicionado em três tipos de caixas
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Luengo, Rita Fátima A.

; Moita, Antônio Williams

; Nascimento, Edson F.

; Melo, Mário F.

Horticultura Brasileira

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jul 2001, Volume 19 N. 2 Pages 151 - 154

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Atualmente, no Brasil, a embalagem mais usada para tomate continua sendo a caixa de madeira que era usada para transportar querosene na segunda guerra mundial, há meio século, conhecida como caixa "K". Esta embalagem possui características que favorecem as injúrias mecânicas e comprometem a durabilidade e qualidade das hortaliças, como o fato de apresentar superfície áspera, alojar patógenos, profundidade excessiva, possuir aberturas laterais cortantes. Considerando os problemas da caixa K e a necessidade de proteção do tomate, a Embrapa Hortaliças iniciou, em janeiro de 1997, pesquisa para geração de uma embalagem adequada para acondicionamento e transporte de tomate. A embalagem definitiva foi testada em relação à caixa 'K' e caixa de plástico existente no mercado. Nos frutos de tomate foram avaliados a variação de matéria fresca, vida útil, cor, danos mecânicos, variação da firmeza, teor relativo de água e deterioração. A nova embalagem foi nomeada caixa Embrapa e apresenta menores percentagens de danos mecânicos, provavelmente a característica mais importante avaliada, reduzindo perdas pós-colheita em tomate de mesa.

The most common box used for harvested vegetables in Brazil is the wood one which was used for kerosene transporting during second world war, in 1945. This box causes mechanical damage and reduces vegetables shelf-life and quality, due to its rough surface allowing pathogen colonization, due to the excessive number of fruit layers, and due to the lateral cut openings. Considering the problems of the K box and the necessity of protecting tomato fruits, Embrapa Hortaliças began in January 1997 a research to develop an adequate box to protect tomato fruits. The definitive box, named "Embrapa box", was compared with the K box and the most common plastic boxes from the market. The weight, shelf-life, color, mechanical damage, firmness, relative water content and deterioration were evaluated. The damage was significantly different and lower in the Embrapa box, reducing post-harvest losses in tomato fruits.

6276 downloads

14.

Neurocisticercose com quadro clínico inicial de meningite aguda
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Bonametti, Ana Maria

; Baldy, José Luíz da Silveira

; Bortoliero, André Luíz

; Maio, Cláudia Maria Dantas de

; Passos, Joselina do Nascimento

; Takata, Paulo Kiyoshi

; Pauli, Dayse Souza de

; Guimarães, Joaquim Celso Andrade

; Anzai, Edson Tsuyomi

; Elisbão, Maria do Carmo Manfredini

Revista do Instituto de Medicina Tropical de São Paulo

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feb 1994, Volume 36 N. 1 Pages 27 - 32

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

São apresentados 27 casos de neurocisticercose, com quadro clínico inicial de meningite aguda, atendidos no Hospital Universitário Regional do Norte do Paraná (HURNP - Universidade Estadual de Londrina). Vinte (74,1%) pacientes eram do sexo masculino; a idade variou de 4 a 52 anos (23,6 ± 11,7 anos); 11 tinham menos de 20 anos, 10 tinham entre 21 e 30 anos e 6, mais de 30 anos. O diagnóstico etiológico foi estabelecido pela reatividade no líquido cefalorraquidiano (LCR) do teste de fixação do complemento (Weinberg) em 17 pacientes e pelo imunoenzimático (ELISA) para cisticercose em 10. Em 6 pacientes foi realizada tomografia computadorizada de crânio, todas com alterações sugestivas de neurocisticercose. No LCR colhido na admissão, em 21 (77,78%) pacientes havia predomínio de linfócitos/monócitos e em 6 (22,2%), predomínio de neutrófilos. A presença de eosinófilos, possibilitando a suspeita de neurocisticercose, só ocorreu na primeira amostra de LCR em 7 casos; desses, 4 casos a pleocitose era linfomonocitária e 3 era neutrofilica. Hiperproteinorraquia e hipoglicorraquia no LCR colhido na admissão foram observadas em 18 (66,6%) e 6 (22,2%) pacientes, respectivamente. Nos doentes em que não havia eosinófilos no LCR colhido na admissão, o diagnóstico inicial foi de meningite linfomonocitária de etiología presumivelmente viral ou de meningite purulenta. O tratamento da meningite aguda por neurocisticercose foi realizado com dexametasona e houve desaparecimento dos sintomas e sinais. Não houve óbito em nenhum caso. Os autores ressaltam a importância de incluir a neurocisticercose no diagnóstico diferencial das meningites agudas, em áreas endêmicas para essa doença, assim como realizar rotineiramente em todas as amostras de LCR colhidas de pacientes atendidos o teste ELISA para cisticercose.

Twenty seven cases of neurocysticercosis, with clinical picture of acute meningitis, are described. Twenty (74.1%) patients are male; the age was 4 to 42 years (23.6 ±11.7 years). The etiologic diagnosis was defined by the complement fixation test (Weinberg) and/ or enzyme-linked immunosorbent assay (ELISA) for cysticercosis in the cerebrospinal fluid (c. s. f.). Six patients that realized cranial computerized tomographic scan ressembling neurocysticercosis. Twenty one (77.8%) have predominancy of lymphomononuclear cells in the c. s. f. obtained in the admission to the hospital; in 6 (22.2%) there were predominancy of polymorphonuclear neutrophils. In this c. s. f. there were eosinosis in four patients that have c. s. f. lymphomononuclear pleocytosis and in three that have c. s. f. neutrophyl pleocytosis, suggesting the diagnosis of neurocysticercosis. The treatment of acute neurocysticercosis was made with dexamethasone. All the patients survived and were transfered to the ambulatory of Neurology for follow-up and complementary treatment

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