Pesquisa | SciELO

ABSTRACT Pyrrhulina brevis is an endemic fish from the Amazon basin that is valued in the ornamental fish market. In larviculture, fish are very sensitive to stressors and have a high mortality rate. Salinized water may provide more energy to overcome stress and feeding frequency is an important strategy to improve productive performance. Therefore, the aim of this study was to evaluate the best feeding frequency and the best level of water salinization for larval development of P. brevis. A total of 360 post-larvae of P. brevis (5.26 ± 1.65 mg, 5.57 ± 0.68 mm) were randomly distributed in 36 aquariums (1 L) in a 3x4 factorial scheme, to evaluate three concentrations of salt in water (0, 1 and 2 g L-1) and four feeding frequencies (once, twice, three and four times a day). We offered 150 Artemia nauplii per day and per post-larvae during 15 days. The fish kept at 1 g L-1 salinized water, and those fed 3 and 4 times a day presented significantly greater final length and weight, weight gain, and specific growth rate for length and weight. An interaction between salinized water and feeding frequency was observed for survival rate. We conclude that, during the initial rearing phase of P. brevis, feeding frequency of three times a day and salinized water at 1 g L-1 is recommended.

RESUMO Pyrrhulina brevis é um peixe endêmico da bacia amazônica que apresenta bons valores no mercado de peixes ornamentais. Na larvicultura, os peixes são muito sensíveis aos estressores e apresentam alta taxa de mortalidade. A água salinizada pode fornecer mais energia para superar o estresse e a frequência alimentar é uma estratégia importante para melhorar o desempenho produtivo. Portanto, o objetivo deste trabalho foi avaliar a melhor frequência alimentar e o melhor nível de salinização da água para o desenvolvimento larval de P. brevis. Um total de 360 pós-larvas de P. brevis (5,26 ± 1,65 mg, 5,57 ± 0,68 mm) foram distribuídos aleatoriamente em 36 aquários (1 L) em esquema fatorial 3x4, para avaliar três concentrações de sal na água (0, 1 e 2 g L-1) e quatro frequências de alimentação (uma, duas, três e quatro vezes ao dia). Foram oferecidas 150 náuplios de Artemia por dia e por pós-larva, durante 15 dias. Os peixes mantidos com 1 g L-1 de água salinizada e os alimentados 3 e 4 vezes ao dia apresentaram comprimento e peso finais, ganho de peso e taxa de crescimento específico para comprimento e peso significativamente maiores. Uma interação entre água salinizada e frequência alimentar foi observada para a taxa de sobrevivência. Concluímos que, durante a fase inicial de criação de P. brevis, recomenda-se uma frequência alimentar de três vezes ao dia e água salinizada a 1 g L-1.

https://doi.org/10.1590/1809-4392202200602

Identification of management factors associated with glanders’s occurrence in equids in Brazilian Northeast region
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Carvalho, Jéssica de Crasto Souza

; Pinheiro Junior, José Wilton

; Falcão, Marcus Vinícius Dias

; Silva, Karla Patrícia Chaves da

; Santana, Vania Lucia de Assis

; Mota, Rinaldo Aparecido

Ciência Rural

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2023, Volume 53 Nº 10 elocation e20220316

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

ABSTRACT: Glanders is a contagious zoonotic infectious disease characterized by an acute or chronic condition that mainly affects equids and is caused by Burkholderia (B.) mallei. From January 2005 to December 2017, 697 farms with positive cases of this disease were registered in Brazil, with the Northeast region accounting for 61.4% (428/697) of the total number of cases. This study conducted an epidemiological study of B. mallei infections that occurred in farms in the states of Pernambuco, Paraíba, Ceará and Alagoas. For this purpose, investigative questionnaires were applied to six farms where there were outbreaks of glanders and 11 farms where there were no reports of glanders between 2017 and 2021, and statistical analysis of the factors associated with the occurrence of glanders in Northeastern Brazil was performed. Factors such as the purpose of rearing (P = 0.023), lack of information on disease transmission modes (P = 0.034), failure to carry out periodic tests for glanders diagnosis (P = 0,029), no request for glanders tests prior to the purchase of new animals periodic tests for glanders diagnosis (P = 0.029), not requiring a negative test for glanders in the acquisition of animals (P = 0.06), use of extensive breeding systems(P = 0.027), and poor stall hygiene were associated with disease occurrence (P = 0.001). Understanding the factors related to the occurrence of glanders in the Northeast Region of Brazil helps to establish management measures that minimize bacteria transmission, thereby reducing the number of cases in the region and economic losses associated with glanders.

RESUMO: O mormo é uma doença infectocontagiosa, zoonótica, de caráter agudo ou crônico, que acomete principalmente os equídeos, causado por Burkholderia (B.) mallei. De janeiro de 2005 até dezembro de 2017, 697 focos da doença foram registrados no Brasil, sendo que a região Nordeste detém 61,4% (428/697) do total de focos. Objetivou-se realizar um estudo epidemiológico da infecção por Burkholderia mallei em propriedades nos estados de Pernambuco, Paraíba, Ceará e Alagoas. Para tal foi aplicado questionário investigativo em seis fazendas onde houve caso de Mormo e 11 fazendas em que não houve relato entre 2007 e 2011 e realizada análise estatística dos fatores de manejo associados à ocorrência do Mormo no Nordeste do Brasil. Observou-se associação significativa para as seguintes variáveis: objetivo da criação (comércio, esporte e trabalho nas fazendas) (P = 0,023); ausência de informação sobre as formas de transmissão da bactéria (P = 0,034); não realização de exames periódicos para o diagnóstico do mormo (P = 0,029); exigência de exame negativo na compra de equinos (P = 0,06); utilização do sistema de criação extensivo (P = 0,027) e deficiência de higienização das baias (P = 001). Os resultados obtidos devem ser utilizados na implementação de medidas de manejo que minimizem o risco de transmissão da bactéria, reduzindo os casos da doença na região e as perdas econômicas com o mormo.

https://doi.org/10.1590/0103-8478cr20220316

Safety of genetically modified glyphosate-tolerant eucalyptus designed for integrated weed management
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Avisar, Dror

; Dias, Tatiane B.

; Santos, Anselmo A. dos

; Galan, Maria P.

; Gonsalves, José M. W

; Graça, Rodrigo N.

; Livne, Sivan

; Manoeli, Alexandre

; Drezza, Thaís R.

; Porto, Antonio C. M.

; Rocha, Carolina S.

; Pinheiro, Ana Cristina

Advances in Weed Science

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2023, Volume 41 elocation e020230032

Resumo: En | Texto: En | PDF: En

Background Eucalyptus is the primary cultivated wood species in Brazil, covering 7.5 million hectares. Weed competition in eucalyptus plantations reduces yield and increases operational costs. FuturaGene/Suzano has developed genetically modified (GM) eucalyptus varieties with glyphosate herbicide tolerance (HT) as a modern tool for improving weed management practices in plantations. The first event received regulatory approval for commercial deployment in 2021. However, the introgression of a new GM trait into eucalyptus, a non-isogenic species, cannot be achieved through selfing or backcrossing. To overcome this limitation and expedite the introgression of HT into the breeding population, multiple GM events were generated, in various genetic backgrounds and genomic locations, enabling simultaneous crossing with numerous elite parents. Objective To characterize the newly developed HT GM eucalyptus events and assess their safety for the environment and wood production. Methods HT GM eucalyptus events were subjected to genome sequencing and glyphosate tolerance testing. Biosafety analyses and environmental impact assessments were conducted through field trials in various eucalyptus cultivation regions, comparing the HT GM eucalyptus with conventional clones. Results The new events proved highly tolerant to glyphosate and displayed different genomic insertion sites. No adverse effects on non-target organisms were observed, and there were no significant differences in the soil microbiota or decomposition profile.Conclusions: The HT GM events have been proven to be safe, posing a low risk to the environment, humans, and animals. Consequently, these HT GM eucalyptus varieties can be confidently utilized for wood production.

https://doi.org/10.51694/advweedsci/2023;41:00019

Scientific diving in Brazil: history, present and perspectives
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Leite, Tatiana S.

; Pinheiro, Igor E.

; Berchez, Flávio

; Bertoncini, Áthila A.

; Cima, Oswaldo M. Del

; Demetrescu, Irene E.

; Francini-Filho, Ronaldo B.

; Kikuchi, Ruy K.P

; Machado, Arthur A.

; Maia-Nogueira, Rodrigo

; Martins, Flavio L.

; Mendes, Liana F.

; Rambelli, Gilson

; Sampaio, Claudio L.S.

; Segal, Barbara

; Aguiar, Aline A.

; Auler, Augusto S.

; Barroco-Neto, José

; Bonaldo, Roberta M.

; Buchmann, Francisco S.

; Calippo, Flavio

; Cesar, Augusto

; Gama, Matheus A.C.

; Ghilardi-Lopes, Natalia

; Leão, Zelinda M.A.N.

; Lessa, Guilherme C.

; Menegola, Carla

; Pinheiro, Hudson T.

; Rocha, Luiz A.

; Sabino, José

; Seoane, José C.S.

; Sestokas, Julia

; Tiago, Cláudio C.

; Wegner, Ewerton

; Lotufo, Tito

Ocean and Coastal Research

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2023, Volume 71 elocation e23045

Resumo: En | Texto: En | PDF: En

Abstract Scientific diving (SD) is defined as any diving activity that applies scientific procedures to produce subsidies for studies and technical works in underwater environments. The first report of an underwater scientific study in Brazil dates to the 19th century, in the Abrolhos reefs. Currently, in Brazil, scientific diving has been performed in various areas, from shallow coastal regions to remote and sometimes hard-to-reach places, such as oceanic islands, flooded caves, and icy areas like Antarctica. However, the regulation of SD in Brazil still lacks more concrete actions towards an effective and efficient self-regulation that offers physical safety to practitioners and institutional safeguards for organizations that use it in their research projects. Thus, this article aims to contribute to a better understanding of this critical issue in Brazil and to serve as a reference and incentive for the training of professionals and the development of these activities in the country. It includes: 1) a historical review of SD; 2) a diagnosis of the training and application of SD in Brazil; 3) the evolution of marine sciences in Brazil from the perspective of SD; 4) a review of the use of environmental assessment and underwater conservation techniques in oceans and internal waters; 5) an analysis of the evolution of scientific diver training in Brazil, including a diagnosis on training; 6) the history and updates of the rules, regulations, and safety of SD. Given all the potential of diving combined with specific techniques for research, monitoring, and marine and limnic science in Brazil, we aim to understand the evolution of scientific diving teaching and to outline perspectives in the country, as it is crucial for the training of qualified scientists capable of performing these underwater tasks. Finally, we present future plans for the development of this activity in Brazil from the point of view of research and the labor market.

https://doi.org/10.1590/2675-2824071.23036tsl

Gênero Cryptostegia: fitoquímica, atividades biológicas e aplicações industriais
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Morais, Selene M. de

; Pinheiro, Hamanda B.

; Rebouças Filho, José V.

; Cavalcante, Gessica S.

; Bonilla, Oriel H.

Química Nova

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Jun 2021, Volume 44 Nº 6 Páginas 709 - 716

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

The genus Cryptostegia comprises two species, C. madagascariensis (Bojer) and C. grandiflora (Roxb. Ex R. Br) that belong to the Apocynaceae family and are widely distributed in the tropics, as in Australia, New Zealand, India and Brazil, where they cause great socioeconomic and environmental damage, as they are invaders causing damage, mainly in the cultivation of carnaúba, a native plant of great importance in the wax and derivatives industry in Northeast Brazil. Both are perennial shrubs, native to the island of Madagascar, have abundant latex and are known as rubber vine. The plants have the potential for pharmacological, biological and industrial applications. This is due to a rich source of chemical compounds (proteins, phenols, flavonoids, steroids, triterpenoids, cardiac glycosides, etc.) resulting from primary and secondary metabolism. The plants of the Cryptostegia genus showed many activities against bacteria, fungi, insects, Ae. aegypti larvae, Shistosoma sp., as well as for human health as analgesic, anti-inflammatory, antioxidant and antitumoral, and for industrial purposes acting as fibrinogenolytic, hydrolytic, anticorrosive, coagulant and depilatory for leather. Nevertheless, the toxicity is a limitation for the plant use then in order to stand out the economic potential a detailed research on toxicity and management of growing conditions is necessary.

https://doi.org/10.21577/0100-4042.20170716 81 downloads

Persistent symptoms and decreased health-related quality of life after symptomatic pediatric COVID-19: A prospective study in a Latin American tertiary hospital
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Fink, Thais T.

; Marques, Heloisa H.S.

; Gualano, Bruno

; Lindoso, Livia

; Bain, Vera

; Astley, Camilla

; Martins, Fernanda

; Matheus, Denise

; Matsuo, Olivia M.

; Suguita, Priscila

; Trindade, Vitor

; Paula, Camila S.Y.

; Farhat, Sylvia C.L.

; Palmeira, Patricia

; Leal, Gabriela N.

; Suzuki, Lisa

; Odone Filho, Vicente

; Carneiro-Sampaio, Magda

; Duarte, Alberto José S.

; Antonangelo, Leila

; Batisttella, Linamara R.

; Polanczyk, Guilherme V.

; Pereira, Rosa Maria R.

; Carvalho, Carlos Roberto R.

; Buchpiguel, Carlos A.

; Latronico, Ana Claudia

; Seelaender, Marilia

; Silva, Clovis Artur

; Pereira, Maria Fernanda B.

; Sallum, Adriana M. E.

; Brentani, Alexandra V. M.

; Neto, Álvaro José S.

; Ihara, Amanda

; Santos, Andrea R.

; Canton, Ana Pinheiro M.

; Watanabe, Andreia

; Santos, Angélica C. dos

; Pastorino, Antonio C.

; Franco, Bernadette D. G. M.

; Caruzo, Bruna

; Ceneviva, Carina

; Martins, Carolina C. M. F.

; Prado, Danilo

; Abellan, Deipara M.

; Benatti, Fabiana B.

; Smaria, Fabiana

; Gonçalves, Fernanda T.

; Penteado, Fernando D.

; Castro, Gabriela S. F. de

; Gonçalves, Guilherme S.

; Roschel, Hamilton

; Disi, Ilana R.

; Marques, Isabela G.

; Castro, Inar A.

; Buscatti, Izabel M.

; Faiad, Jaline Z.

; Fiamoncini, Jarlei

; Rodrigues, Joaquim C.

; Carneiro, Jorge D. A.

; Paz, Jose A.

; Ferreira, Juliana C.

; Ferreira, Juliana C. O.

; Silva, Katia R.

; Bastos, Karina L. M.

; Kozu, Katia

; Cristofani, Lilian M.

; Souza, Lucas V. B.

; Campos, Lucia M. A.

; Silva Filho, Luiz Vicente R. F.

; Sapienza, Marcelo T.

; Lima, Marcos S.

; Garanito, Marlene P.

; Santos, Márcia F. A.

; Dorna, Mayra B.

; Aikawa, Nadia E.

; Litvinov, Nadia

; Sakita, Neusa K.

; Gaiolla, Paula V. V.

; Pasqualucci, Paula

; Toma, Ricardo K.

; Correa-Silva, Simone

; Sieczkowska, Sofia M.

; Imamura, Marta

; Forsait, Silvana

; Santos, Vera A.

; Zheng, Yingying

Clinics

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2021, Volume 76 elocation e3511

Resumo: En | Texto: En | PDF: En

OBJECTIVES: To prospectively evaluate demographic, anthropometric and health-related quality of life (HRQoL) in pediatric patients with laboratory-confirmed coronavirus disease 2019 (COVID-19) METHODS: This was a longitudinal observational study of surviving pediatric post-COVID-19 patients (n=53) and pediatric subjects without laboratory-confirmed COVID-19 included as controls (n=52) was performed. RESULTS: The median duration between COVID-19 diagnosis (n=53) and follow-up was 4.4 months (0.8-10.7). Twenty-three of 53 (43%) patients reported at least one persistent symptom at the longitudinal follow-up visit and 12/53 (23%) had long COVID-19, with at least one symptom lasting for >12 weeks. The most frequently reported symptoms at the longitudinal follow-up visit were headache (19%), severe recurrent headache (9%), tiredness (9%), dyspnea (8%), and concentration difficulty (4%). At the longitudinal follow-up visit, the frequencies of anemia (11% versus 0%, p=0.030), lymphopenia (42% versus 18%, p=0.020), C-reactive protein level of >30 mg/L (35% versus 0%, p=0.0001), and D-dimer level of >1000 ng/mL (43% versus 6%, p=0.0004) significantly reduced compared with baseline values. Chest X-ray abnormalities (11% versus 2%, p=0.178) and cardiac alterations on echocardiogram (33% versus 22%, p=0.462) were similar at both visits. Comparison of characteristic data between patients with COVID-19 at the longitudinal follow-up visit and controls showed similar age (p=0.962), proportion of male sex (p=0.907), ethnicity (p=0.566), family minimum monthly wage (p=0.664), body mass index (p=0.601), and pediatric pre-existing chronic conditions (p=1.000). The Pediatric Quality of Live Inventory 4.0 scores, median physical score (69 [0-100] versus 81 [34-100], p=0.012), and school score (60 [15-100] versus 70 [15-95], p=0.028) were significantly lower in pediatric patients with COVID-19 at the longitudinal follow-up visit than in controls. CONCLUSIONS: Pediatric patients with COVID-19 showed a longitudinal impact on HRQoL parameters, particularly in physical/school domains, reinforcing the need for a prospective multidisciplinary approach for these patients. These data highlight the importance of closer monitoring of children and adolescents by the clinical team after COVID-19.

https://doi.org/10.6061/clinics/2021/e3511

Antimicrobial properties of heterocyclic compounds against clinical mastitis isolates
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Acosta, Atzel C.

; Cardoso, Marcos V.O.

; Oliveira Filho, Gevanio B.

; Pinheiro Junior, José W.

; Leite, Ana Cristina L.

; Mota, Rinaldo A.

Pesquisa Veterinária Brasileira

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2021, Volume 41 elocation e06862

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: A mastite causa significativas perdas econômicas à indústria leiteira bovina. O presente estudo teve como objetivo avaliar as propriedades antibacterianas de 39 derivados heterocíclicos (1,3-tiazóis e 4-tiazolidinonas) contra isolados clínicos de mastite em vacas leiteiras. Amostras de leite foram coletadas de vacas com mastite clínica e as espécies bacterianas isoladas foram identificadas por PCR. A atividade antibacteriana foi avaliada pelo método de microdiluição em caldo. Primeiramente, os 39 compostos heterocíclicos foram testados contra quatro isolados bacterianos (Staphylococcus aureus, Streptococcus agalactiae, Corynebacterium bovis e Escherichia coli) escolhidos aleatoriamente dentre os recuperados das amostras de leite (Estudo 1). Posteriormente, compostos com atividade antibacteriana mais forte foram testados contra todos os isolados bacterianos recuperados das amostras de leite (Estudo 2). Os compostos 1,3-tiazóis apresentaram a maior atividade antibacteriana, principalmente os compostos 30 e 38, que também apresentaram propriedades bactericidas de acordo com seus valores de concentração inibitória mínima (CIM) e concentração bactericida mínima (CBM). Os isolados Corynebacterium spp. e Enterobacteriaceae foram os mais suscetíveis aos compostos 30 e 38. Os compostos 30 e 38 mostraram-se promissores como novos agentes antimicrobianos.

ABSTRACT: Mastitis causes significant economic losses to the dairy cattle industry. The present study aimed to evaluate the antibacterial properties of 39 heterocyclic derivatives (1,3-thiazoles and 4-thiazolidinones) against clinical mastitis isolates from dairy cows. Milk samples were collected from cows with clinical mastitis and the bacterial species were identified by PCR. Antibacterial activity was assessed using the broth microdilution method. First, 39 heterocyclic compounds were tested against four bacterial isolates (Staphylococcus aureus, Streptococcus agalactiae, Corynebacterium bovis and Escherichia coli) randomly chosen from those recovered from the milk samples (Study 1). Subsequently, the compounds with the strongest antibacterial activity were tested against all the bacterial isolates recovered from the milk samples (Study 2). 1,3-thiazoles showed the strongest antibacterial activity, specially compounds 30 and 38, which also showed bactericidal properties according to their minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) values. Corynebacterium spp. and Enterobacteriaceae isolates were the most susceptible to compounds 30 and 38. Compounds 30 and 38 are promising targets for new antimicrobial agents.

https://doi.org/10.1590/1678-5150-pvb-6862 26 downloads

Reprodutibilidade das mensurações da mecânica respiratória em pacientes sob ventilação mecânica invasiva
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Menezes Júnior, José da Natividade

; Silva, Ludmilla Mota

; Santos, Leonardo José Morais

; Correia, Helena França

; Lopes, Wende

; Silva, Virgínia Eugênia Pinheiro e

; Anjos, Jorge Luis Motta dos

; Martinez, Bruno Prata

Revista Brasileira de Terapia Intensiva

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Set 2020, Volume 32 Nº 3 Páginas 398 - 404

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Objetivo: Avaliar a reprodutibilidade intra e interexaminador das mensurações da resistência e das complacências estática e dinâmica do sistema respiratório em pacientes sob ventilação mecânica. Métodos: Trata-se de estudo analítico realizado com indivíduos com idade ≥ 18 anos, em ventilação mecânica invasiva, que não tinham diagnóstico clínico de doença do aparelho respiratório e/ou anormalidade de caixa torácica. Foram realizadas três aferições da mecânica respiratória com intervalo de 1 minuto entre elas. A primeira e a terceira aferições foram realizadas pelo avaliador A e a segunda aferição, pelo avaliador B. A comparação dos valores de resistência e complacências estática e dinâmica do sistema respiratório foi calculada por meio do coeficiente de correlação intraclasse. Resultados: Foram realizadas 198 aferições da mecânica respiratória em 66 pacientes sob ventilação mecânica, com idade média de 52,6 ± 18,6 anos, índice de massa corporal médio de 21,6 ± 2,1kg/m2, predomínio do perfil cirúrgico (61,5%) e sexo feminino (53,8%). Foram obtidos valores médios das três aferições para resistência do sistema respiratório (A1: 15,7 ± 6,8cmH2O/L/s; B1: 15,7 ± 6,4cmH2O/L/s e A2: 15,9 ± 6,2cmH2O/L/s), para complacência estática do sistema respiratório (A1: 42,1 ± 13,7mL/cmH2O; B1: 42,4 ± 14,6mL/cmH2O e A2: 42,2 ± 14,5mL/cmH2O) e para complacência dinâmica do sistema respiratório (A1: 21,3 ± 7,3mL/cmH2O; B1: 21,4 ± 7,5mL/cmH2O e A2: 21,3 ± 6,2mL/cmH2O). Também foram encontrados valores do coeficiente de correlação intraclasse para resistência do sistema respiratório (R = 0,882 e p = 0,001; R = 0,949 e p = 0,001 - interexaminadores A1 versus B e B versus A2, respectivamente; R = 0,932 e p = 0,001 - intraexaminador); complacência estática do sistema respiratório (R = 0,951 e p = 0,001; R = 0,958 e p = 0,001 - interexaminadores A1 versus B e B versus A2, respectivamente; R = 0,965 e p = 0,001 - intraexaminador) e complacência dinâmica do sistema respiratório (R = 0,957 e p = 0,001; R = 0,946 e p = 0,001 - interexaminadores A1 versus B e B versus A2 respectivamente; R = 0,926 e p = 0,001 - intraexaminador). Conclusão: A mensuração de mecânica respiratória apresenta boa reprodutibilidade intra e interexaminador para as aferições de resistência e complacências estática e dinâmica do sistema respiratório em pacientes ventilados.

ABSTRACT Objective: To evaluate the intra- and interexaminer reproducibility of measurements of the resistance and static and dynamic compliance of the respiratory system in patients on mechanical ventilation. Methods: This was an analytical study conducted with individuals aged ≥ 18 years who were on invasive mechanical ventilation and had no clinical diagnosis of respiratory system disease and/or chest abnormality. Three measurements of respiratory mechanics were performed with a 1-minute interval between them. The first and third measurements were performed by examiner A, the second by examiner B. The values for the resistance and static and dynamic compliance of the respiratory system were compared using the intraclass correlation coefficient. Results: A total of 198 measurements of respiratory mechanics were performed for 66 patients on mechanical ventilation. The patients had a mean age of 52.6 ± 18.6 years and a mean body mass index of 21.6 ± 2.1kg/m2; a surgical profile (61.5%) and female sex (53.8%) were predominant. Mean values were obtained for the three measurements of respiratory system resistance (A1: 15.7 ± 6.8cmH2O/L/s; B1: 15.7 ± 6.4cmH2O/L/s and A2: 15.9 ± 6.2cmH2O/L/s), respiratory system static compliance (A1: 42.1 ± 13.7mL/cmH2O; B1: 42.4 ± 14.6mL/cmH2O and A2: 42.2 ± 14.5mL/cmH2O) and respiratory system dynamic compliance (A1: 21.3 ± 7.3mL/cmH2O; B1: 21.4 ± 7.5mL/cmH2O and A2: 21.3 ± 6.2mL/cmH2O). The intraclass correlation coefficient was also calculated for respiratory system resistance (R = 0.882 and p = 0.001; R = 0.949 and p = 0.001 - interexaminer A1 versus B and B versus A2, respectively; R = 0.932 and p = 0.001 - intraexaminer); respiratory system static compliance (R = 0.951 and p = 0.001; R = 0.958 and p = 0.001 - interexaminer A1 versus B and B versus A2, respectively; R = 0.965 and p = 0.001 - intraexaminer) and respiratory system dynamic compliance (R = 0.957 and p = 0.001; R = 0.946 and p = 0.001 - interexaminer A1 versus B and B versus A2, respectively; R = 0.926 and p = 0.001 - intraexaminer). Conclusion: The measurements of resistance and static and dynamic compliance of the respiratory system show good intra- and interexaminer reproducibility for ventilated patients.

https://doi.org/10.5935/0103-507x.20200068 1078 downloads

Project and Analysis of Quasi-Periodic PBG for Microstrip Antenna
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Guimarães, Ádller O.

; Barreto, Tarcisio S.

; Silva, José P.

; Sena, Francisco C. B. de

; Pinheiro, Jonathan P. P.

; Lavor, Otávio P.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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Jun 2020, Volume 19 Nº 2 Páginas 152 - 164

Resumo: En | Texto: En | PDF: En

Abstract In this work the influence of quasi-periodic distributions of air holes with 6, 12 and 6-fold modified symmetries, applied to the substrate of a rectangular microstrip patch antenna are analyzed. To validate the study, parameters such as S11 parameter, bandwidth, total gain, radiation pattern and electric field were investigated through computational simulations. The results obtained for all the PBG structures were compared to each other and to a reference antenna without PBG. In addition, we analyzed the resonating modes of each structure and it was observed improvements in bandwidth and gain for all modified structures when compared with the reference antenna, as well as reduction of the dielectric constant that is also recalculated. Some prototypes were built to compare the computational results to the measured results. It was verified that the measured and simulated results of return loss are in agreement and the antenna with 6-fold modified symmetry presented better performance than the others analyzed PBG structures.

https://doi.org/10.1590/2179-10742020v19i2821 513 downloads

10.

Triatomine bugs (Hemiptera, Reduviidae, Triatominae) in the Domiciles of the Guaribas Valley Territory, in Northeastern Brazil
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Mendes-Sousa, Antonio Ferreira

; Araújo, Leid Daiane Neri de

; Sousa, Samires Silva de

; Alencar, Suzane de Carvalho

; Sousa Júnior, Wesesller Almeida de

; Sousa, Larisse Maria de

; Rocha, Suzane Maria da

; Maia, José Cleves da Silva

; Marques, Márcia Maria Mendes

; Pinheiro, Tamaris Gimenez

; Silva, Edson Lourenço da

; Barros, Veruska Cavalcanti

; Pacheco, Ana Carolina Landim

Revista da Sociedade Brasileira de Medicina Tropical

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2020, Volume 53 elocation e20200177

Resumo: En | Texto: En | PDF: En

Abstract INTRODUCTION Triatomine bugs are hematophagous insects that are extremely important in public health because they are natural vectors of Trypanosoma cruzi, the causative agent of Chagas disease. In this study, we aimed to assess the occurrence of triatomine species and the natural T. cruzi infection in the Guaribas Valley territory, an endemic region for Chagas disease in northeastern Brazil. METHODS Insects were actively captured from July 2017 to October 2019 in the intra- and peridomiciles of 16 municipalities of the Guaribas Valley territory, in the southeast area of Piauí state. Triatomine species were identified following a taxonomic key, and natural infection was investigated through insects’ fresh feces exams. RESULTS A total of 430 triatomines were collected, including 211 nymphs and 219 adults. Of all collected specimens, 39 (9.1%) were from the intradomiciles and 391 (90.9%) from peridomiciles. Nine species, including two subspecies, could be identified: Triatoma brasiliensis brasiliensis, T. brasiliensis macromelasoma, T. pseudomaculata, T. sordida, T. juazeirensis, T. melanocephala, Panstrongylus lutzi, Rhodnius domesticus, R. nasutus, and R. robustus. T. brasiliensis were the most frequently collected bugs, representing 72% of all the identified insects. None of the examined invertebrates presented flagellate forms of T. cruzi. CONCLUSIONS: This is the first report of T. b. macromelasoma and T. juazeirensis in the Guaribas Valley territory. The persistence of triatomine species in the domiciles in an endemic area for Chagas disease emphasizes the relevance of entomological surveillance and vector control measures in the studied area.

https://doi.org/10.1590/0037-8682-0177-2020 373 downloads

11.

Mesophotic ecosystems at Fernando de Noronha Archipelago, Brazil (South-western Atlantic), reveal unique ichthyofauna and need for conservation
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Pimentel, Caio R.

; Rocha, Luiz A.

; Shepherd, Bart

; Phelps, Tyler A. Y.

; Joyeux, Jean-Christophe

; Martins, Agnaldo S.

; Stein, Carlos Eduardo

; Teixeira, João B.

; Gasparini, João Luiz

; Reis-Filho, José Amorim

; Garla, Ricardo C.

; Francini-Filho, Ronaldo B.

; Delfino, Stephanie D. T.

; Mello, Thayná J.

; Giarrizzo, Tommaso

; Pinheiro, Hudson T.

Neotropical Ichthyology

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2020, Volume 18 Nº 4 elocation e200050

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Apesar de muitos estudos sobre a ictiofauna do Arquipélago de Fernando de Noronha terem sido realizados, sua diversidade de peixes mesofóticos nunca foi estudada antes. Neste estudo utilizamos mergulho autônomo e mergulho técnico, vídeos subaquáticos remotos com isca e veículo operado remotamente para registrar peixes de ecossistemas rasos (≤ 30 m de profundidade) e mesofóticos (31 a 150 m de profundidade). Dezenove espécies de peixes pertencentes a 14 famílias são apresentadas aqui como novos registros, representando um aumento de 8,2% na riqueza de peixes marinhos da região, que agora possui um total de 250 espécies e 77 famílias. Esses novos registros incluem quatro prováveis novas espécies e reforçam a importância de estudos em ecossistemas mesofóticos. Nossos resultados também enfatizam a necessidade de proteção e atenção à essa ictiofauna única encontrada nesses ecossistemas profundos.

Abstract Although several studies on the ichthyofauna of the Fernando de Noronha Archipelago have been carried out, its mesophotic fish diversity has never been surveyed before. Here we used SCUBA and technical rebreather diving, baited remote underwater videos and remotely operated vehicle to record shallow (≤ 30 m depth) and mesophotic (31 to 150 m depth) fishes. Nineteen fish species belonging to 14 families are reported here as new records, representing an increase of 8.2% in marine fish richness for the region, which now has a total of 250 species and 77 families. These new records include four potential new species and highlight the importance of surveying mesophotic ecosystems, even in well studied sites. Our results also emphasize the need for protection and attention to the unique ichthyofauna found at mesophotic depths.

https://doi.org/10.1590/1982-0224-2020-0050 1657 downloads

12.

Criopreserved ovarian tissue transplantation and bone restoration metabolism in castrated rats
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SILVA, LÍGIA HELENA FERREIRA MELO E

; SILVA, JOÃO MARCOS DE MENESES E

; SALAMA, MAHMOUD

; PINHEIRO, LUIZ GONZAGA PORTO

; LUNARDI, FRANCIELE OSMARINI

; SILVA, PAULO GOBERLÂNIO BARROS DA

; HIRTH, CARLOS GUSTAVO

; LUCENA, IGOR FREITAS DE

; GOMES, GLAUCO JORGE DA COSTA

; LEITE, JOSÉ ALBERTO DIAS

Revista do Colégio Brasileiro de Cirurgiões

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2018, Volume 45 Nº 1 elocation e1577

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO Objetivos: avaliar os níveis de estradiol e os efeitos do autotransplante de tecido ovariano aquecido, após vitrificação, no metabolismo ósseo de ratas previamente ooforectomizadas bilateralmente. Métodos: trabalho experimental com 27 ratas com idades entre 11 e 12 semanas e pesando 200g a 300g, submetidas à ooforectomia bilateral e criopreservação de tecido ovariano para posterior reimplante. Os animais foram divididos em dois grupos, A e B, com oito e 19 ratas, respectivamente. O autotransplante ocorreu em dois períodos de acordo com o tempo de castração: após uma semana, no grupo A, e após um mês no grupo B. Mensurações de estradiol sérico e análise histológica de ovário e tíbia foram feitos antes e após o período de ooforectomia (precoce ou tardio) e um mês após o reimplante. Resultados: nos grupos A e B, as espessuras corticais médias da tíbia foram 0,463±0,14mm (média±DP) na linha de base, 0,360±0,14mm após ooforectomia e 0,445±0,17mm em um mês após o reimplante (p<0,005). As médias trabeculares foram 0,050±0,08mm (média±DP) na linha de base, 0,022±0,08mm após ooforectomia e 0,049±0,032mm em um mês após o reimplante (p<0,005). Não houve diferença estatística entre a variação do estradiol entre os dois grupos de estudo (p=0,819). Conclusão: o transplante de tecido ovariano criopreservado restabeleceu os parâmetros ósseos, e estes resultados sugerem que a reimplantação ovariana em mulheres pode apresentar os mesmos efeitos benéficos sobre o metabolismo ósseo.

ABSTRACT Objectives: to evaluate estradiol levels and autotransplantation heated ovarian tissue effects, after vitrification, on rats bone metabolism previously oophorectomized bilaterally. Methods: experimental study with 27 rats aged 11 to 12 weeks and weighing 200g to 300g, submitted to bilateral oophorectomy and ovarian tissue cryopreservation for subsequent reimplantation. Animals were divided into two groups, A and B, with 8 and 19 rats, respectively. Autotransplantation occurred in two periods according to castration time: after one week, in group A, and after one month in group B. Serum estradiol measurements and ovary and tibia histological analysis were performed before and after oophorectomy period (early or late) and one month after reimplantation. Results: in groups A and B, tibia median cortical thickness was 0.463±0.14mm (mean±SD) at the baseline, 0.360±0.14mm after oophorectomy and 0.445±0.17mm one month after reimplantation p<0.005). Trabecular means were 0.050±0.08mm (mean±SD) at baseline, 0.022±0.08mm after oophorectomy and 0.049±0.032mm one month after replantation (p<0.005). There was no statistical difference in estradiol variation between the two study groups (p=0.819). Conclusion: cryopreserved ovarian tissue transplantation restored bone parameters, and these results suggest that ovarian reimplantation in women may have the same beneficial effects on bone metabolism.

https://doi.org/10.1590/0100-6991e-20181577 2044 downloads

13.

Pharmaceutical development of tablets containing a spray-dried optimized extract from Lippia origanoides H. B. K.: influence of excipients and toxicological assessment
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Coelho, Angélica Gomes

; Lima Neto, José de Sousa

; Moura, Arkellau Kenned Silva

; Morais, Ilmara Cecilia Pinheiro da Silva

; Cunha, Francisco Valmor Macedo

; Melo-Neto, Bernardo

; Medeiros, Maria das Graças Freire de

; Vasconcelos, Eilika Andreia Feitosa

; Arcanjo, Daniel Dias Rufino

; Nunes, Lívio Cesar Cunha

; Citó, Antônia Maria das Graças Lopes

Brazilian Journal of Pharmaceutical Sciences

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2018, Volume 54 Nº 2 elocation e17226

Resumo: En | Texto: En | PDF: En

ABSTRACT Lippia origanoides is a honey shrub which has showed hypotensive potential assessed by in vivo studies. The aim of this work is the development of a pharmaceutical formulation composed by an optimized extract obtained from aerial parts of L. origanoides. The quantification of the naringenin marker in the dry extract and tablets developed was performed, as well as the assessment of the oral acute toxicity in rats. The hydroalcoholic extract of L. origanoides was spray-dried with the addition of colloidal silicon dioxide (Lo-HAE/CSD), and then applied in the preparation of eight different lots of tablets. The influence of the diluent (cellulose or babassu mesocarp), the presence of binder, and the percentage of lubricant, as well as organoleptic and physicochemical characteristics were screened. For the quantification of the marker content both in Lo-HAE/CSD and in the tablets, an analytical curve of the naringenin standard was fitted, and the samples were then analyzed in UFLC. The toxicological assessment was performed in female Wistar rats according to the Acute Toxic Class Method from OECD. The developed tablets produced meet acceptable macroscopic characteristics, and the presence of babassu as diluent provided improved physicochemical properties. The best content of Lo-HAE/CSD in the tablet (100.27%) was identified for the lot containing babassu, composed by 1.0% magnesium stearate, without PVP binder in its formulation. Moreover, Lo-HAE/CSD showed no signs of toxicity. Therefore, the babassu mesocarp powder is a promising pharmaceutical excipient for the development of herbal tablets containing the Lippia origanoides extract.

https://doi.org/10.1590/s2175-97902018000217226 1465 downloads

14.

Influence of toluene and salinity on biosurfactant production by Bacillus sp.: scale up from flasks to a bench-scale bioreactor
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Souza, Ellen Cristina

; Vessoni-Penna, Thereza Christina

; Arni, Saleh Al

; Domínguez, José Manuel

; Converti, Attilio

; Oliveira, Ricardo Pinheiro de Souza

Brazilian Journal of Chemical Engineering

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Abr 2017, Volume 34 Nº 2 Páginas 395 - 405

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ABSTRACT To select the best biosurfactant producer, Pseudomonas putida, Bacillus megatherium, Bacillus licheniformis and Bacillus subtilis were cultured in flasks on media with different salinity [low salinity (LS), Bushnell-Haas (BH) and artificial sea water (SW) media] supplemented or not with toluene as a model pollutant. Toluene inhibited the growth of all microorganisms and stimulated the biosurfactant production. B. subtilis exhibited the best performance, being able to lower the surface tension (ST) in the LS medium to 65.5 mN/min in the absence of toluene, and to 46.5 mN/min in the BH medium in the presence of toluene, corresponding to ST reductions of 13.0 and 27.5 mN/m, respectively. Scaling up the process to a bench-scale fermentor, the best results were obtained in the LS medium, where B. subtilis was able to reduce the toluene concentration from 26.0 to 4.3 g/L within 12 h and ST by 17.2 mN/m within 18 h. The results of this study point out that B. subtilis is an interesting biosurfactant producer, which could be used in the bioremediation of toluene-contaminated water.

https://doi.org/10.1590/0104-6632.20170342s20150787 1519 downloads

15.

Incidence of tuberculosis among patients with rheumatoid arthritis using TNF blockers in Brazil: data from the Brazilian Registry of Biological Therapies in Rheumatic Diseases (Registro Brasileiro de Monitoração de Terapias Biológicas - BiobadaBrasil)
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Yonekura, Claudia Leiko

; Oliveira, Rene Donizeti Ribeiro

; Titton, David C.

; Ranza, Roberto

; Ranzolin, Aline

; Hayata, André L.

; Duarte, Ângela

; Silveira, Inês G.

; Carvalho, Hellen M. da S. de

; Moraes, Júlio C. Bertacini de

; Abreu, Mirhelen Mendes de

; Valim, Valéria

; Bianchi, Washington

; Brenol, Claiton Viegas

; Pereira, Ivanio A.

; Costa, Izaias

; Macieira, José C.

; Miranda, José R.S.

; Guedes-Barbosa, Luiz S.

; Bertolo, Manoel B.

; Sauma, Maria Fátima Lobato da C.

; Silva, Marília B.G.

; Freire, Marlene

; Scheinberg, Morton A.

; Toledo, Roberto A.

; Oliveira, Sheila K.F.

; Fernandes, Vander

; Pinheiro, Marcelo M.

; Castro, Glaucio

; Vieira, Walber Pinto

; Baaklini, Cesar Emile

; Ruffino-Netto, Antonio

; Pinheiro, Geraldo da Rocha Castelar

; Laurindo, Ieda Maria Magalhães

; Louzada-Junior, Paulo

Revista Brasileira de Reumatologia

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2017, Volume 57 Supl. 2 Páginas s477 - s483

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Resumo Objetivos Avaliar incidência de tuberculose e triagem para tuberculose latente em brasileiros com artrite reumatoide em uso de agentes biológicos na prática clinica. Pacientes e métodos Estudo de coorte com dados do Registro Brasileiro de Monitoração de Terapias Biológicas (BiobadaBrasil), de 01/2009 a 05/2013, abrangeu 1.552 tratamentos, 415 somente com drogas modificadoras do curso da doença (MMCDs) sintéticas, 942 MMCDs sintéticas em associação com anti-TNF (etanercepte, infliximabe, adalimumabe) e 195 MMCDs sintéticas em associação com outros biológicos (abatacepte, rituximabe e tocilizumabe). Avaliaram-se ocorrência de tuberculose, tempo de exposição às drogas e triagem para TB. Análise estatística: teste t não pareado e teste de Fisher bicaudal; p < 0,05. Resultados O tempo de exposição dos controles foi de 981 pacientes-ano, do grupo de anti-TNF foi de 1.744 pacientes-ano (adalimumabe = 676, infliximabe = 547 e etanercepte = 521 pacientes-ano) e o de outros biológicos de 336 pacientes-ano. A incidência de TB foi de 1,01/1.000 pacientes-ano nos controles e de 2,87 pacientes-ano nos usuários de anti-TNF (adalimumabe = 4,43/1.000 pacientes-ano; etanercepte = 1,92/1.000 pacientes-ano e infliximabe = 1,82/1.000 pacientes-ano). Não houve casos de tuberculose no grupo de outros biológicos. O tempo médio de exposição até a ocorrência de tuberculose foi de 27(11) meses para o grupo anti-TNF. Conclusões A incidência de tuberculose foi maior nos usuários de MMCDs sintéticas e anti-TNF do que nos usuários de MMCDs sintéticas e de MMCDs sintéticas e biológicos não anti-TNF, e também mais tardia, sugerindo infecção durante o tratamento, e não falha na triagem.

Abstract Objectives To assess the incidence of tuberculosis and to screen for latent tuberculosis infection among Brazilians with rheumatoid arthritis using biologics in clinical practice. Patients and methods This cohort study used data from the Brazilian Registry of Biological Therapies in Rheumatic Diseases (Registro Brasileiro de Monitoração de Terapias Biológicas - BiobadaBrasil), from 01/2009 to 05/2013, encompassing 1552 treatments, including 415 with only synthetic disease-modifying anti-rheumatic drugs, 942 synthetic DMARDs combined with anti-tumor necrosis factor (etanercept, infliximab, adalimumab) and 195 synthetic DMARDs combined with other biologics (abatacept, rituximab and tocilizumab). The occurrence of tuberculosis and the drug exposure time were assessed, and screening for tuberculosis was performed. Statistical analysis: Unpaired t-test and Fisher's two-tailed test; p < 0.05. Results The exposure times were 981 patient-years in the controls, 1744 patient-years in the anti-TNF group (adalimumab = 676, infliximab = 547 and etanercept = 521 patient-years) and 336 patient-years in the other biologics group. The incidence rates of tuberculosis were 1.01/1000 patient-years in the controls and 2.87 patient-years among anti-TNF users (adalimumab = 4.43/1000 patient-years; etanercept = 1.92/1000 patient-years and infliximab = 1.82/1000 patient-years). No cases of tuberculosis occurred in the other biologics group. The mean drug exposure time until the occurrence of tuberculosis was 27(11) months for the anti-TNF group. Conclusions The incidence of tuberculosis was higher among users of synthetic DMARDs and anti-TNF than among users of synthetic DMARDs and synthetic DMARDs and non-anti-TNF biologics and also occurred later, suggesting infection during treatment and no screening failure.

https://doi.org/10.1016/j.rbre.2017.05.005 3602 downloads

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Você pode enriquecer sua busca de uma forma muito simples. Use os índices de pesquisa combinados com os conectores (AND ou OR) e especifique cada vez mais sua busca.

Por exemplo, se você deseja buscar artigos sobre
casos de dengue no Brasil em 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

Veja abaixo a lista completa de índices de pesquisa que podem ser usados:

Cód. do Índice	Elemento
ti	título do artigo
au	autor
kw	palavras-chave do artigo
subject	assunto (palavras do título, resumo e palavras-chave)
ab	resumo
ta	título abreviado da revista (ex. Cad. Saúde Pública)
journal_title	título completo da revista (ex. Cadernos de Saúde Pública)
la	código do idioma da publicação (ex. pt - Português, es - Espanhol)
type	tipo do documento
pid	identificador da publicação
publication_year	ano de publicação do artigo
sponsor	financiador
aff_country	código do país de afiliação do autor
aff_institution	instituição de afiliação do autor
volume	volume do artigo
issue	número do artigo
elocation	elocation
doi	número DOI
issn	ISSN da revista
in	código da coleção SciELO (ex. scl - Brasil, col - Colômbia)
use_license	código da licença de uso do artigo

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Email: scielo@scielo.org

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