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1.
Synthesis and Biological Evaluation of Novel 1,3-Benzoxathiol-2-one Sulfonamides against Toxic Activities of the Venom of Bothrops jararaca and Bothrops jararacussu Snakes
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Chazin, Eliza L.
; Martins, Leonardo B.
; Souza, Marcus Vinícius N. de
; Gomes, Claudia Regina B.
; Silva, Ana Cláudia R. da
; Branco, Marcelly C.
; Sanchez, Eladio F.
; Fuly, André L.
; Vasconcelos, Thatyana R. A.
.
This work describes the synthesis of new 1,3-benzoxathiol-2-one sulfonamides and evaluation of their ability to inhibit some in vitro (coagulant, proteolytic and hemolytic) and in vivo (hemorrhagic, edematogenic and lethality) toxic activities of Bothrops jararaca and Bothrops jararacussu venoms. Compounds have been synthesized from the coupling of intermediate 5-amino-6 methoxybenzo[d][1,3]oxathiol-2-one 4 with benzenesulfonyl chlorides. Characterization of the products was achieved by nuclear magnetic resonance (NMR) and electrospray ionization mass spectra (ESI-MS) techniques. Biological assay results have shown that most of compounds inhibited the main toxic activities of the venom of the two snake species. Compound 5b (N-(6 methoxy-2 oxobenzo[d][1,3]oxathiol-5-yl)-4-nitrobenzenesulfonamide) was the most efficient in inhibiting hemolysis of B. jararaca, and coagulation and proteolysis induced by both venoms. For in vivo activities, all compounds inhibited the edema, from 35 to 72%, and most of them exhibited antihemorrhagic and antilethality activities. Thus, the results pointed to the biological potential of these compounds, being promising molecules to treat envenomation by these snakes as well as to aid the current antivenom serum therapy.
2.
Schools reopening and the COVID-19 pandemic: a case study from Macaé, Rio de Janeiro, Brazil
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POZZOBON, ALLAN P. B.
; PETRY, ANA C.
; ZILBERBERG, CARLA
; BARROS, CINTIA M. DE
; NEPOMUCENO-SILVA, JOSÉ L.
; FEITOSA, NATÁLIA M.
; GOMES NETO, LUPIS R.
; RODRIGUES, BRUNO C.
; BRINDEIRO, RODRIGO M.
; NOCCHI, KEITY JAQUELINE C.V.
; MURY, FLAVIA B.
; SOUZA-MENEZES, JACKSON DE
; SILVA, MANUELA L. DA
; MEDEIROS, MARCIO JOSÉ DE
; GESTINARI, RAQUEL S.
; ALVARENGA, ALESSANDRA S. DE
; SILVA, CARINA A.O.
; SANTOS, DANIELE G. DOS
; SILVESTRE, DIEGO HENRIQUE
; SOUSA, GRAZIELE F. DE
; ALMEIDA, JANIMAYRI F. DE
; SILVA, JHENIFER N. DA
; BRANDÃO, LAYZA M.
; DRUMMOND, LEANDRO O.
; CARPES, RAPHAEL M.
; SANTOS, RENATA C. DOS
; PORTAL, TAYNAN M.
; TANURI, AMILCAR
; NUNES-DA-FONSECA, RODRIGO
.
Abstract Since the first reported case of COVID-19 in Brazil, the public and private educational system started to close. Up to November 2020, scientific discussions about the return of schooling activities have been rarely performed by the national scientific community and police-makers. The great delay of school returning in Brazil contrasts with successful international strategies of school reopening worldwide and seems counterintuitive with the reopening of non-essential activities. Here, important issues to be considered before and during school reopening are reviewed and discussed. COVID-19 testing is essential to avoid disease spreading, but high cost of individual RT-qPCRs impairs an extensive testing strategy for school returning. To reduce costs and increase the speed of diagnosis, we tested the efficiency of a pooled-sample PCR strategy in a cohort of the educational staff in the city of Macaé/RJ, finding five asymptomatic individuals (0,66%) among the 754 people tested. Thus, a polled-sample PCR testing strategy of the educational staff might prevent infection spreading in schools at a reasonable cost. We discuss how our test strategy could be coupled with internationally recognized safety rules to allow for a safe school return and how countries from different world regions are dealing with educational activities during COVID-19 pandemic.
3.
Treatment outcomes of pulp revascularization in traumatized immature teeth using calcium hydroxide and 2% chlorhexidine gel as intracanal medication
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PEREIRA, Andrea Cardoso
; OLIVEIRA, Matheus Lima de
; CERQUEIRA-NETO, Ana Carolina C. L.
; GOMES, Brenda P. F. A.
; FERRAZ, Caio Cezar Randi
; ALMEIDA, José Flávio Affonso de
; MARCIANO, Marina Angélica
; DE-JESUS-SOARES, Adriana
.
Abstract Objective Pulp revascularization is an effective treatment for immature necrotic teeth. Calcium hydroxide has been used in pulp revascularization as an intracanal medication due to its antimicrobial action and the non-exhibition of crown discoloration and cytotoxicity for stem cells from the apical papilla. Our study aimed to investigate the clinical success and quantitative radiographic changes of root development in immature traumatized teeth using calcium hydroxide plus 2% chlorhexidine gel as intracanal medication. Methodology In this retrospective study, 16 patients were treated with a standardized pulp revascularization protocol. Calcium hydroxide and 2% chlorhexidine gel were manipulated in a 1:1 (v/v) ratio and inserted into root canals with Lentulo spirals (Dentsply Maillefer, Baillaigues, Switzerland). Patients were followed up for a period from 9 to 36 months for the evaluation of clinical and radiological data. Radiographic measurements of root length, root width, apical diameter, and MTA placement from the apex were quantified using software ImageJ. Wilcoxon test and t-test were used, according to nonparametric or parametric data, respectively, for changes over time in root length, root width, and apical diameter. Results Fifteen teeth survived during the follow-up period (93.75%) and met the criteria for clinical success. Although the changes seem to be very small in many cases, significant increases in the average root length (14.28%, p<0.0001), root width (8.12%, p=0.0196), and decrease in apical diameter (48.37%, p=0.0007) were observed. MTA placement from the apex and age at the time of treatment was not significantly associated with the quantitative radiographic outcomes. Conclusions Pulp revascularization in traumatized immature teeth treated with calcium hydroxide plus 2% chlorhexidine gel as intracanal medication had high success and survival rates, showing periodontal healing and resolution of signs and symptoms. However, concerning the continued root development, the outcomes can still be considered unpredictable.
https://doi.org/10.1590/1678-7757-2020-0217
1201 downloads
4.
Inhibition of Zika Virus Replication by Synthetic Bis-Naphthoquinones
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Gonzaga, Daniel T. G.
; Gomes, Rafaela S. P.
; Marra, Roberta K. F.
; Silva, Fernando C. da
; Gomes, Max W. L.
; Ferreira, Davis F.
; Santos, Raissa M. A.
; Pinto, Ana M. V.
; Ratcliffe, Norman Arthur
; Cirne-Santos, Claudio C.
; Barros, Caroline S.
; Ferreira, Vitor F.
; Paixão, Izabel Christina N. P.
.
Journal of the Brazilian Chemical Society
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Zika virus (ZIKV) is a mosquito-borne pathogen which is a current global public health concern. There are currently no approved vaccines or antivirals against ZIKV infection. Taking into account that naphthoquinones have shown promising antiviral activity, the aim of this study was to describe the screening of two bis-naphthoquinones series against ZIKV. Twenty seven compounds were evaluated against ZIKV using Vero cells. The findings showed that among the compounds analyzed four were promising. Compound 3,3’-((2-nitrophenyl)methylene)bis(2-hydroxynaphthalene-1,4-dione) containing the nitro group at the ortho position showed the best selectivity index, followed by compound 3,3’-(4-chlorophenylmethylene)bis(naphthalene-1,2,4-triyl triacetate) with the chlorophenylmethylene radical. These results demonstrate that these bis-naphthoquinones are largely effective in inhibiting the replication of ZIKV.
https://doi.org/10.21577/0103-5053.20190071
681 downloads
5.
POLYPHENOL AND TRITERPENOID CONSTITUENTS OF Eugenia florida DC. (MYRTACEAE) LEAVES AND THEIR ANTIOXIDANT AND CYTOTOXIC POTENTIAL
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Santos, Priscila F. P.
; Gomes, Luiz N. L. F.
; Mazzei, José L.
; Fontão, Ana Paula A.
; Sampaio, André L. F.
; Siani, Antonio C.
; Valente, Ligia M. M.
.
Leaves of Eugenia florida DC. have been used in folk medicine as hypotensive, hypoglycemic, antipyretic and for gastrointestinal disorders, among others. In this study dried leaves were extracted with ethanol and the extract was partitioned with hexane, CHCl3, EtOAc, BuOH and water to afford triterpenoid- and polyphenol-rich fractions which were analyzed by GC-MS and UFLC-DAD-ESI-Ion Trap-MSn. All fractions were tested against the proliferation of leukemic K562 and human melanoma SK-Mel-28 cell lines and for their ability to scavenge DPPH radical. Twenty-nine compounds were fully identified (among triterpenic and phenolic acids, flavonol- and dihydroflavonol-monoglyclosides) based on mass fragmentation patterns and comparison to standards and/or literature data. The ability to scavenge DPPH radical resulted in the following order: BuOH ≈ EtOAc > crude extract ≈ Water >> CHCl3 >> hexane; with the two most active reaching half of the TBHQ control potency (EC50 6.59 ± 0.03 µg mL-1). On testing against the proliferation of K562 and SK-Mel-28 cell lines, the most significant inhibitions were achieved on the former by the crude extract (IC50 12 µg mL-1) and the hexane and EtOAc fractions at 15 µg mL-1.
https://doi.org/10.21577/0100-4042.20170284
1339 downloads
6.
Hepatitis C in Brazil: lessons learned with boceprevir and telaprevir
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Gomes, Lenyta Oliveira
; Teixeira, Marina Rodrigues
; Rosa, Júnior André da
; Feltrin, Alberi Adolfo
; Rodrigues, João Paulo V.
; Vecchi, Mariane D’Avila
; Carneiro, Jane Meire M.
; Noblat, Lúcia de Araújo C. B.
; Chachá, Silvana Gama F.
; Martinelli, Ana de Lourdes C.
; Pereira, Leonardo Regis L.
; Silveira, Marysabel Pinto T.
; Blatt, Carine Raquel
; Farias, Mareni Rocha
.
Revista do Instituto de Medicina Tropical de São Paulo
- Journal Metrics
ABSTRACT In 2012, the first-generation protease inhibitors telaprevir (TVR) and boceprevir (BOC) were introduced in the Brazilian health system for treatment of chronic hepatitis C, after their approval by the National Committee for Health Technology Incorporation (CONITEC). However, these medicines were discontinued in 2015. The short period of use in therapy and their high cost require a discussion about the consequences for patients and for the health system of the early incorporation of new therapies. The article presents a qualitative analysis of the incorporation process of both medications in Brazil and the results of a multicenter study that included patients treated with BOC or TVR between January 2011 and December 2015 in five Brazilian cities. The study included 855 patients (BOC: n=247) and (TVR: n=608). The document analysis showed that CONITEC’s decision to incorporate BOC and TVR was based on results of phase III clinical trials that compared sustained virologic response (SVR) rates of patients treated with BOC and TVR with rates of those that received placebo. However, these studies included a low percentage of cirrhotic patients. The SVR rates observed in this multicenter study were worse than clinical trials pointed out (BOC: 45.6%; TVR: 51.8%), but similar to those achieved with previously adopted therapies. The discontinuation rate due to adverse events was (BOC: 15.4%; TVR: 12.7%). Based on these unsatisfactory results, the study brings a discussion that goes beyond the therapy outcomes, exploring the incorporation of these high-cost medicines and the related decision-making process, contributing to future decisions in medicine policies and in the treatment of chronic hepatitis C.
https://doi.org/10.1590/s1678-9946201860029
1586 downloads
7.
Adsorption isotherms of the red mombin powder produced in spouted bed dryer
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Lins, Analha D. F.
; Rocha, Ana P. T.
; Gomes, Josivanda P.
; Feitosa, Regilane M.
; Araujo, Gilmar T.
; Santos, Dyego da C.
.
Revista Brasileira de Engenharia Agrícola e Ambiental
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RESUMO A seriguela é um fruto sazonal e susceptível a reações de deterioração devido ao seu elevado teor de água, o que evidencia a necessidade de utilização de processos que prolonguem sua vida útil e a disponibilize durante todo o ano, inclusive a mercados distantes dos locais de produção. Assim, objetivou-se produzir a polpa de seriguela em pó em secador de leito de jorro, analisá-la quanto aos parâmetros físicos e químicos e avaliar seu comportamento higroscópico nas temperaturas de 20, 30 e 40 °C, com ajustes dos modelos de GAB, Oswin e Peleg aos dados experimentais. Os resultados das análises físicas e químicas evidenciaram tempo de molhagem intermediário, de 0,39 g min-1, solubilidade superior a 60% e média fluidez com fator de Hausner e índice de Carr compreendido entre 1,26-1,34 e 0,21-0,25, respectivamente. As partículas de pó se apresentaram com formato esférico, superfície lisa e algumas irregularidades, com tendência de formação de aglomerados. As isotermas tiveram comportamento sigmoidal do tipo II, com o modelo de Peleg detendo, em todas as temperaturas, os melhores ajustes aos dados experimentais com coeficientes de determinação superiores a 0,99 e desvios percentuais médios inferiores a 2,0%.
ABSTRACT Red mombin is a seasonal fruit and susceptible to degradation reactions due to its high water content. This highlights the need to use processes that prolong its life and make it available all year round, including to markets away from the production sites. Thus, the objective of this study was to produce red mombin pulp powder in spouted bed dryer, evaluate it regarding physical and chemical parameters and assess its hygroscopic behavior at temperatures of 20, 30 and 40 °C, fitting the models of the GAB, Oswin and Peleg to the experimental data. The results of the physical and chemical analyses showed intermediate wetting time of 0.39 g min-1, solubility higher than 60% and mean flowability with Hausner ratio and Carr index of 1.26-1.34 and 0.21-0.25, respectively. The powder particles exhibited spherical shape, smooth surface and some irregularities, with tendency to form agglomerates. The isotherms had a type-II sigmoidal behavior, and the Peleg model, at all temperatures, showed the best fits to the experimental data with determination coefficients above 0.99 and mean percentage deviations lower than 2.0%.
https://doi.org/10.1590/1807-1929/agriambi.v21n8p562-567
1635 downloads
8.
Growing knowledge: an overview of Seed Plant diversity in Brazil
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Zappi, Daniela C.
; Filardi, Fabiana L. Ranzato
; Leitman, Paula
; Souza, Vinícius C.
; Walter, Bruno M.T.
; Pirani, José R.
; Morim, Marli P.
; Queiroz, Luciano P.
; Cavalcanti, Taciana B.
; Mansano, Vidal F.
; Forzza, Rafaela C.
; Abreu, Maria C.
; Acevedo-Rodríguez, Pedro
; Agra, Maria F.
; Almeida Jr., Eduardo B.
; Almeida, Gracineide S.S.
; Almeida, Rafael F.
; Alves, Flávio M.
; Alves, Marccus
; Alves-Araujo, Anderson
; Amaral, Maria C.E.
; Amorim, André M.
; Amorim, Bruno
; Andrade, Ivanilza M.
; Andreata, Regina H.P.
; Andrino, Caroline O.
; Anunciação, Elisete A.
; Aona, Lidyanne Y.S.
; Aranguren, Yani
; Aranha Filho, João L.M.
; Araújo, Andrea O.
; Araújo, Ariclenes A.M.
; Araújo, Diogo
; Arbo, María M.
; Assis, Leandro
; Assis, Marta C.
; Assunção, Vivian A.
; Athiê-Souza, Sarah M.
; Azevedo, Cecilia O.
; Baitello, João B.
; Barberena, Felipe F.V.A.
; Barbosa, Maria R.V.
; Barros, Fábio
; Barros, Lucas A.V.
; Barros, Michel J.F.
; Baumgratz, José F.A.
; Bernacci, Luis C.
; Berry, Paul E.
; Bigio, Narcísio C.
; Biral, Leonardo
; Bittrich, Volker
; Borges, Rafael A.X.
; Bortoluzzi, Roseli L.C.
; Bove, Cláudia P.
; Bovini, Massimo G.
; Braga, João M.A.
; Braz, Denise M.
; Bringel Jr., João B.A.
; Bruniera, Carla P.
; Buturi, Camila V.
; Cabral, Elza
; Cabral, Fernanda N.
; Caddah, Mayara K.
; Caires, Claudenir S.
; Calazans, Luana S.B.
; Calió, Maria F.
; Camargo, Rodrigo A.
; Campbell, Lisa
; Canto-Dorow, Thais S.
; Carauta, Jorge P.P.
; Cardiel, José M.
; Cardoso, Domingos B.O.S.
; Cardoso, Leandro J.T.
; Carneiro, Camila R.
; Carneiro, Cláudia E.
; Carneiro-Torres, Daniela S.
; Carrijo, Tatiana T.
; Caruzo, Maria B.R.
; Carvalho, Maria L.S.
; Carvalho-Silva, Micheline
; Castello, Ana C.D.
; Cavalheiro, Larissa
; Cervi, Armando C.
; Chacon, Roberta G.
; Chautems, Alain
; Chiavegatto, Berenice
; Chukr, Nádia S.
; Coelho, Alexa A.O.P.
; Coelho, Marcus A.N.
; Coelho, Rubens L.G.
; Cordeiro, Inês
; Cordula, Elizabeth
; Cornejo, Xavier
; Côrtes, Ana L.A.
; Costa, Andrea F.
; Costa, Fabiane N.
; Costa, Jorge A.S.
; Costa, Leila C.
; Costa-e-Silva, Maria B.
; Costa-Lima, James L.
; Cota, Maria R.C.
; Couto, Ricardo S.
; Daly, Douglas C.
; De Stefano, Rodrigo D.
; De Toni, Karen
; Dematteis, Massimiliano
; Dettke, Greta A.
; Di Maio, Fernando R.
; Dórea, Marcos C.
; Duarte, Marília C.
; Dutilh, Julie H.A.
; Dutra, Valquíria F.
; Echternacht, Lívia
; Eggers, Lilian
; Esteves, Gerleni
; Ezcurra, Cecilia
; Falcão Junior, Marcus J.A.
; Feres, Fabíola
; Fernandes, José M.
; Ferreira, D.M.C.
; Ferreira, Fabrício M.
; Ferreira, Gabriel E.
; Ferreira, Priscila P.A.
; Ferreira, Silvana C.
; Ferrucci, Maria S.
; Fiaschi, Pedro
; Filgueiras, Tarciso S.
; Firens, Marcela
; Flores, Andreia S.
; Forero, Enrique
; Forster, Wellington
; Fortuna-Perez, Ana P.
; Fortunato, Reneé H.
; Fraga, Cléudio N.
; França, Flávio
; Francener, Augusto
; Freitas, Joelcio
; Freitas, Maria F.
; Fritsch, Peter W.
; Furtado, Samyra G.
; Gaglioti, André L.
; Garcia, Flávia C.P.
; Germano Filho, Pedro
; Giacomin, Leandro
; Gil, André S.B.
; Giulietti, Ana M.
; A.P.Godoy, Silvana
; Goldenberg, Renato
; Gomes da Costa, Géssica A.
; Gomes, Mário
; Gomes-Klein, Vera L.
; Gonçalves, Eduardo Gomes
; Graham, Shirley
; Groppo, Milton
; Guedes, Juliana S.
; Guimarães, Leonardo R.S.
; Guimarães, Paulo J.F.
; Guimarães, Elsie F.
; Gutierrez, Raul
; Harley, Raymond
; Hassemer, Gustavo
; Hattori, Eric K.O.
; Hefler, Sonia M.
; Heiden, Gustavo
; Henderson, Andrew
; Hensold, Nancy
; Hiepko, Paul
; Holanda, Ana S.S.
; Iganci, João R.V.
; Imig, Daniela C.
; Indriunas, Alexandre
; Jacques, Eliane L.
; Jardim, Jomar G.
; Kamer, Hiltje M.
; Kameyama, Cíntia
; Kinoshita, Luiza S.
; Kirizawa, Mizué
; Klitgaard, Bente B.
; Koch, Ingrid
; Koschnitzke, Cristiana
; Krauss, Nathália P.
; Kriebel, Ricardo
; Kuntz, Juliana
; Larocca, João
; Leal, Eduardo S.
; Lewis, Gwilym P.
; Lima, Carla T.
; Lima, Haroldo C.
; Lima, Itamar B.
; Lima, Laíce F.G.
; Lima, Laura C.P.
; Lima, Leticia R.
; Lima, Luís F.P.
; Lima, Rita B.
; Lírio, Elton J.
; Liro, Renata M.
; Lleras, Eduardo
; Lobão, Adriana
; Loeuille, Benoit
; Lohmann, Lúcia G.
; Loiola, Maria I.B.
; Lombardi, Julio A.
; Longhi-Wagner, Hilda M.
; Lopes, Rosana C.
; Lorencini, Tiago S.
; Louzada, Rafael B.
; Lovo, Juliana
; Lozano, Eduardo D.
; Lucas, Eve
; Ludtke, Raquel
; Luz, Christian L.
; Maas, Paul
; Machado, Anderson F.P.
; Macias, Leila
; Maciel, Jefferson R.
; Magenta, Mara A.G.
; Mamede, Maria C.H.
; Manoel, Evelin A.
; Marchioretto, Maria S.
; Marques, Juliana S.
; Marquete, Nilda
; Marquete, Ronaldo
; Martinelli, Gustavo
; Martins da Silva, Regina C.V.
; Martins, Ângela B.
; Martins, Erika R.
; Martins, Márcio L.L.
; Martins, Milena V.
; Martins, Renata C.
; Matias, Ligia Q.
; Maya-L., Carlos A.
; Mayo, Simon
; Mazine, Fiorella
; Medeiros, Debora
; Medeiros, Erika S.
; Medeiros, Herison
; Medeiros, João D.
; Meireles, José E.
; Mello-Silva, Renato
; Melo, Aline
; Melo, André L.
; Melo, Efigênia
; Melo, José I.M.
; Menezes, Cristine G.
; Menini Neto, Luiz
; Mentz, Lilian A.
; Mezzonato, A.C.
; Michelangeli, Fabián A.
; Milward-de-Azevedo, Michaele A.
; Miotto, Silvia T.S.
; Miranda, Vitor F.O.
; Mondin, Cláudio A.
; Monge, Marcelo
; Monteiro, Daniele
; Monteiro, Raquel F.
; Moraes, Marta D.
; Moraes, Pedro L.R.
; Mori, Scott A.
; Mota, Aline C.
; Mota, Nara F.O.
; Moura, Tania M.
; Mulgura, Maria
; Nakajima, Jimi N.
; Nardy, Camila
; Nascimento Júnior, José E.
; Noblick, Larry
; Nunes, Teonildes S.
; O'Leary, Nataly
; Oliveira, Arline S.
; Oliveira, Caetano T.
; Oliveira, Juliana A.
; Oliveira, Luciana S.D.
; Oliveira, Maria L.A.A.
; Oliveira, Regina C.
; Oliveira, Renata S.
; Oliveira, Reyjane P.
; Paixão-Souza, Bruno
; Parra, Lara R.
; Pasini, Eduardo
; Pastore, José F.B.
; Pastore, Mayara
; Paula-Souza, Juliana
; Pederneiras, Leandro C.
; Peixoto, Ariane L.
; Pelissari, Gisela
; Pellegrini, Marco O.O.
; Pennington, Toby
; Perdiz, Ricardo O.
; Pereira, Anna C.M.
; Pereira, Maria S.
; Pereira, Rodrigo A.S.
; Pessoa, Clenia
; Pessoa, Edlley M.
; Pessoa, Maria C.R.
; Pinto, Luiz J.S.
; Pinto, Rafael B.
; Pontes, Tiago A.
; Prance, Ghillean T.
; Proença, Carolyn
; Profice, Sheila R.
; Pscheidt, Allan C.
; Queiroz, George A.
; Queiroz, Rubens T.
; Quinet, Alexandre
; Rainer, Heimo
; Ramos, Eliana
; Rando, Juliana G.
; Rapini, Alessandro
; Reginato, Marcelo
; Reis, Ilka P.
; Reis, Priscila A.
; Ribeiro, André R.O.
; Ribeiro, José E.L.S.
; Riina, Ricarda
; Ritter, Mara R.
; Rivadavia, Fernando
; Rocha, Antônio E.S.
; Rocha, Maria J.R.
; Rodrigues, Izabella M.C.
; Rodrigues, Karina F.
; Rodrigues, Rodrigo S.
; Rodrigues, Rodrigo S.
; Rodrigues, Vinícius T.
; Rodrigues, William
; Romaniuc Neto, Sérgio
; Romão, Gerson O.
; Romero, Rosana
; Roque, Nádia
; Rosa, Patrícia
; Rossi, Lúcia
; Sá, Cyl F.C.
; Saavedra, Mariana M.
; Saka, Mariana
; Sakuragui, Cássia M.
; Salas, Roberto M.
; Sales, Margareth F.
; Salimena, Fatima R.G.
; Sampaio, Daniela
; Sancho, Gisela
; Sano, Paulo T.
; Santos, Alessandra
; Santos, Élide P.
; Santos, Juliana S.
; Santos, Marianna R.
; Santos-Gonçalves, Ana P.
; Santos-Silva, Fernanda
; São-Mateus, Wallace
; Saraiva, Deisy P.
; Saridakis, Dennis P.
; Sartori, Ângela L.B.
; Scalon, Viviane R.
; Schneider, Ângelo
; Sebastiani, Renata
; Secco, Ricardo S.
; Senna, Luisa
; Senna-Valle, Luci
; Shirasuna, Regina T.
; Silva Filho, Pedro J.S.
; Silva, Anádria S.
; Silva, Christian
; Silva, Genilson A.R.
; Silva, Gisele O.
; Silva, Márcia C.R.
; Silva, Marcos J.
; Silva, Marcos J.
; Silva, Otávio L.M.
; Silva, Rafaela A.P.
; Silva, Saura R.
; Silva, Tania R.S.
; Silva-Gonçalves, Kelly C.
; Silva-Luz, Cíntia L.
; Simão-Bianchini, Rosângela
; Simões, André O.
; Simpson, Beryl
; Siniscalchi, Carolina M.
; Siqueira Filho, José A.
; Siqueira, Carlos E.
; Siqueira, Josafá C.
; Smith, Nathan P.
; Snak, Cristiane
; Soares Neto, Raimundo L.
; Soares, Kelen P.
; Soares, Marcos V.B.
; Soares, Maria L.
; Soares, Polyana N.
; Sobral, Marcos
; Sodré, Rodolfo C.
; Somner, Genise V.
; Sothers, Cynthia A.
; Sousa, Danilo J.L.
; Souza, Elnatan B.
; Souza, Élvia R.
; Souza, Marcelo
; Souza, Maria L.D.R.
; Souza-Buturi, Fátima O.
; Spina, Andréa P.
; Stapf, María N.S.
; Stefano, Marina V.
; Stehmann, João R.
; Steinmann, Victor
; Takeuchi, Cátia
; Taylor, Charlotte M.
; Taylor, Nigel P.
; Teles, Aristônio M.
; Temponi, Lívia G.
; Terra-Araujo, Mário H.
; Thode, Veronica
; Thomas, W.Wayt
; Tissot-Squalli, Mara L.
; Torke, Benjamin M.
; Torres, Roseli B.
; Tozzi, Ana M.G.A.
; Trad, Rafaela J.
; Trevisan, Rafael
; Trovó, Marcelo
; Valls, José F.M.
; Vaz, Angela M.S.F.
; Versieux, Leonardo
; Viana, Pedro L.
; Vianna Filho, Marcelo D.M.
; Vieira, Ana O.S.
; Vieira, Diego D.
; Vignoli-Silva, Márcia
; Vilar, Thaisa
; Vinhos, Franklin
; Wallnöfer, Bruno
; Wanderley, Maria G.L.
; Wasshausen, Dieter
; Watanabe, Maurício T.C.
; Weigend, Maximilian
; Welker, Cassiano A.D.
; Woodgyer, Elizabeth
; Xifreda, Cecilia C.
; Yamamoto, Kikyo
; Zanin, Ana
; Zenni, Rafael D.
; Zickel, Carmem S
.
Resumo Um levantamento atualizado das plantas com sementes e análises relevantes acerca desta biodiversidade são apresentados. Este trabalho se iniciou em 2010 com a publicação do Catálogo de Plantas e Fungos e, desde então vem sendo atualizado por mais de 430 especialistas trabalhando online. O Brasil abriga atualmente 32.086 espécies nativas de Angiospermas e 23 espécies nativas de Gimnospermas e estes novos dados mostram um aumento de 3% da riqueza em relação a 2010. A Amazônia é o Domínio Fitogeográfico com o maior número de espécies de Gimnospermas, enquanto que a Floresta Atlântica possui a maior riqueza de Angiospermas. Houve um crescimento considerável no número de espécies e nas taxas de endemismo para a maioria dos Domínios (Caatinga, Cerrado, Floresta Atlântica, Pampa e Pantanal), com exceção da Amazônia que apresentou uma diminuição de 2,5% de endemicidade. Entretanto, a maior parte das plantas com sementes que ocorrem no Brasil (57,4%) é endêmica deste território. A proporção de formas de vida varia de acordo com os diferentes Domínios: árvores são mais expressivas na Amazônia e Floresta Atlântica do que nos outros biomas, ervas são dominantes no Pampa e as lianas apresentam riqueza expressiva na Amazônia, Floresta Atlântica e Pantanal. Este trabalho não só quantifica a biodiversidade brasileira, mas também indica as lacunas de conhecimento e o desafio a ser enfrentado para a conservação desta flora.
Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora.
https://doi.org/10.1590/2175-7860201566411
33340 downloads
9.
Novidades taxonômicas em Croton sect. Argyroglossum Baill. e C. sect. Lasiogyne Klotzsch (Crotonoideae-Euphorbiaceae)
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Nove novos sinônimos, um neótipo e três lectotipificações de espécies de Croton são propostos. Além disso, C.schomburgkianus A. P. S. Gomes & M. F. Sales é designada como um novo nome para C. nervosus Klotzsch. Na seção Argyroglossum Baill., Croton argyroglossus Baill. e C. micans var. argyroglossus Baill. são sinonimizadas sob C. argyrophyllus Kunth; C. alagoensis Müll. Arg. e C. floribundus var. piauhiensis Rizzini sinonimizadas sob C. blanchetianus; C. micans var. pubescens Müll. Arg., Croton argyrophyllus var. pubescens (Klotzsch) Müll. Arg., e C. argyrophyllus var. villosus Müll. Arg. são sinonimizadas sob C. schomburgkianus e C. argyrophylloides Müll. Arg. sinonimizada sob C. tricolor Klotzsch ex Baill. Croton sonderianus Müll. Arg. é sinonimizada sob C. jacobinensis Baill. na seção Lasiogyne Klotzsch.
Ninenew synonyms, one neotype and three lectotypifications in Croton are proposed. Croton schomburgkianus A. P. S. Gomes & M. F. Sales is assigned as a new name for C. nervosus Klotzsch. In section Argyroglossum Baill., Croton argyroglossus Baill. and C. micans var. argyroglossus Baill. are synonymized under C. argyrophyllus Kunth, C. alagoensis Müll. Arg. and C. floribundus var. piauhiensis Rizzini are synonymized under C. blanchetianus, C. micans var. pubescens Müll. Arg., Croton argyrophyllus var. pubescens (Klotzsch) Müll. Arg., and C. argyrophyllus var. villosus Müll. Arg. are synonymized under C. schomburgkianus and, C. argyrophylloides Müll. Arg. is synonymized under C. tricolor Klotzsch ex Baill. Finally, C. sonderianus Müll. Arg. is synonymized under C. jacobinensis Baill. in section Lasiogyne Klotzsch.
https://doi.org/10.1590/S0102-33062010000400004
3510 downloads
10.
Fracture process characterization of fiber-reinforced dental composites evaluated by optical coherence tomography, SEM and optical microscopy
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Matheus, Tibério C. U.
; Kauffman, Cynthia M. F.
; Braz, Ana K. S.
; Mota, Cláudia C. B. O.
; Gomes, Anderson S. L.
.
This study used optical coherence tomography (OCT) compared to scanning electron microscopy (SEM) and optical microscopy (OM) to evaluate qualitatively crack propagation and final fracture in restorative composite materials - Filtek Z250 and Filtek Z350 (3M ESPE) - with fiber reinforcement after cyclic loading. Samples were made using a split mold. Initially, 3-point bending tests were performed to determine the maximum force and tension at the fracture moment using samples without fiber reinforcement. Then, mechanical cycling tests were performed using samples with glass fiber embedded internally. The failures were analyzed using the 3 methods described before. OCT permitted good characterization of internal crack propagation of the dental composites, which, however, could not be visualized by either SEM or OM. OCT was proven to be laboratory research tool that is easy to use, does not require any specific preparation of the samples, and is less expensive than SEM.
3897 downloads
11.
Colonização nasofaríngea por Streptococcus pneumoniae em crianças com infecção pelo vírus da imunodeficiência humana
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Cardoso, Viviane C.
; Cervi, Maria C.
; Cintra, Otávio A. L.
; Salathiel, Adriana S. M.
; Gomes, Ana C. L. F.
.
OBJETIVO: Estabelecer a prevalência de colonização pneumocócica em crianças infectadas pelo HIV seguidas ambulatorialmente, com idades entre 0 e 18 anos; determinar a resistência à penicilina, identificar os sorotipos e avaliar se houve associação entre fatores de risco conhecidos e colonização nesse grupo. MATERIAL E MÉTODO: Estudo observacional de corte transversal, no qual foram coletados 112 swabs de nasofaringe das crianças no dia de sua consulta mensal, sendo aplicado um questionário às mães. O material coletado foi processado no laboratório de microbiologia do hospital, conforme as normas do National Committee for Clinical Laboratory Standards, e a sorotipagem foi realizada no Centers for Disease Control and Prevention. Na análise estatística, foram empregados o teste de qui-quadrado e análises uni e multivariável por meio de regressão logística múltipla. RESULTADOS: A prevalência de colonização nasofaríngea por pneumococo encontrada foi de 28,6%, com 15,6% de resistência à penicilina (6,2% de resistência intermediária e 9,4% de resistência plena). Os sorotipos identificados foram 6A, 6B, 7C, 9V, 11A, 13, 14, 15A, 16F, 18C, 19B, 19F, 23B, 23F e 34. Não houve associação entre colonização pneumocócica e os fatores de riscos estudados para essa população. CONCLUSÕES: A prevalência de colonização pneumocócica entre crianças infectadas pelo HIV em nosso serviço não foi superior àquela descrita na literatura em crianças sadias.
OBJECTIVE: To determine the prevalence of pneumococcus colonization among HIV-infected outpatients aged 0 to 18 years. To determine the resistance to penicillin of the microorganisms observed, to identify their serotypes, and to determine whether there are associations between known risk factors and colonization in this group. MATERIAL AND METHOD: This was an observational and cross-sectional study in which nasopharynx swabs were collected from 112 children on the occasion of their monthly appointments and a questionnaire applied to the mothers. The material collected was processed at the microbiology laboratory of the hospital in accordance with National Committee for Clinical Laboratory Standards (NCCLS) regulations and serotyping was performed at the Centers for Diseases Control and Prevention (CDC). Data were analyzed statistically using the chi-square test and with univariate and multivariate analysis with multiple logistic regression. RESULTS: The prevalence rate of nasopharyngeal colonization by pneumococci was 28.6%, with a 15.6% rate of resistance to penicillin (6.2% intermediate resistance and 9.4% full resistance). The serotypes identified were 6A, 6B, 7C, 9V, 11A, 13, 14, 15A, 16F, 18C, 19B, 19F, 23B, 23F, and 34. In this population there were no associations between pneumococcal colonization and the risk factors studied. CONCLUSIONS: The prevalence of pneumococcal colonization among HIV-infected children at our service was not higher than prevalence rates observed in healthy children and reported in the literature.
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12.
Helmintoses intestinais em população de rua da cidade do Rio de Janeiro
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Gomes, Tatiana C.
; Almeida, Monique F.
; Miura, Lina A.
; Granja, Jeferson
; Santos, Desirée V.G.
; Oliveira, Rejane M.F.
; Lopes, Alexandre
; Sequeira, Bruno P.
; Rolemberg, Alessandro A.
; Moraes, Ana L.
; Santos, Carlos S.
.
Revista da Sociedade Brasileira de Medicina Tropical
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Em 82 exames parasitológicos de fezes realizados pelo método de sedimentação espontânea, em indivíduos moradores em ruas da Cidade do Rio de Janeiro, foram encontrados ovos de Ascaris lumbricoides em 40 (48,8%), de Trichuris trichiura em 27 (32,9%) e ancilostomídeos 7 (8,5%).
Stool examination by sedimentation method in 82 homeless individuals living in the streets of Rio de Janeiro City, revealed Ascaris lumbricoides eggs in 40 (48.85%), Trichuris trichiura in 27 (32.9%) and hookworm in 7 (8.5%).
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