Pesquisa | SciELO

There is a high demand for stroke rehabilitation in the Brazilian public health system, but most studies that have addressed rehabilitation for unilateral spatial neglect (USN) after stroke have been performed in high-income countries. Therefore, the aim of this study was to analyze USN patient recruitment in a multicenter noninvasive brain stimulation clinical trial performed in Brazil and to provide study design recommendations for future studies. We evaluated the reasons for exclusion of patients from a multicenter, randomized, double-blinded clinical trial of rehabilitation of USN patients after stroke. Clinical and demographic variables were compared between the included and excluded patients. A descriptive statistical analysis was performed. Only 173 of the 1953 potential neglect patients (8.8%) passed the initial screening. After screening evaluation, 87/173 patients (50.3%) were excluded for clinical reasons. Cognitive impairment led to the exclusion of 21/87 patients (24.1%). Low socioeconomic status led to the exclusion of 37/173 patients (21.4%). Difficulty obtaining transportation to access treatment was the most common reason for their exclusion (16/37 patients, 43.3%). The analyzed Brazilian institutions have potential for conducting studies of USN. The recruitment of stroke survivors with USN was restricted by the study design and limited financial support. A history of cognitive impairment, intracranial stenting or craniectomy, and lack of transportation were the most common barriers to participating in a multicenter noninvasive brain stimulation trial among patients with USN after stroke.

https://doi.org/10.1590/1414-431x2023e12326

MODELING DIAMETER DISTRIBUTION OF TREE SPECIES IN A SEMIDECIDUOUS FOREST FRAGMENT
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Ferreira, Flaick Rodrigo de Lima

; Pelissari, Allan Libanio

; Cysneiros, Vinicius Costa

; Rodrigues, Carla Krulikowski

; Moura, Lucas Araujo

; Marques, Eduardo Resende Girardi

Revista Árvore

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2023, Volume 47 elocation e4701

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

ABSTRACT Modeling diameter distribution in natural forests is an important tool for understanding the native woody species dynamics, supporting decision-making for degraded lands management and restoration. Therefore, this work aimed to fit probabilistic density functions to evaluate the diameter structure of three tree species with economic interest, such as Campomansesia xanthocarpa Marl. Ex. O. Berg, Piptadenia gonoacantha (Mart.) J.F. Macbr. and Zeyheria tuberculosa (Vell.) Bureau ex Verl., in a Semideciduous Seasonal Forest fragment at São Paulo State, Brazil. The data came from 83 temporary plots of 10 m x 20 m systematically distributed along 164 ha. Log-normal, Gamma, and Weibull functions were fitted to the three species using the fitdistrplus-package in the R program. Kolmogorov-Smirnov's adherence test was used to evaluate the fits at a 5% probability level. The functions were selected employing Akaike's Information Criterion (AIC) and Schwarz's Bayesian Information Criterion (BIC), in addition to a graphical analysis of the fitted functions. The results indicated that the three species diameter structure is positively asymmetric, representing the exponential pattern, representing continuous natural regeneration. AIC and BIC statistics indicated the Log-normal function to describe the diameter distribution of C. xanthocarpa and Z. tuberculosa, while the Gamma function was the most appropriate for P. gonoacantha. For the three species, the graphical analysis showed the Gamma function results in the best fit without tendency for estimating frequency density per diameter class.

RESUMO A modelagem da distribuição diamétrica em florestas naturais é uma ferramenta importante para compreender a dinâmica de espécies nativas lenhosas, auxiliando na tomada de decisão para o manejo e a recuperação de áreas degradadas. Dessa forma, o objetivo deste trabalho foi ajustar funções de densidade probabilística para avaliar a estrutura diamétrica de três espécies arbóreas de interesse econômico, como Campomansesia xanthocarpa Marl. Ex. O. Berg, Piptadenia gonoacantha (Mart.) J.F. Macbr. e Zeyheria tuberculosa (Vell.) Bureau ex Verl., em um fragmento de Floresta Estacional Semidecidual no estado de São Paulo, Brasil. Os dados foram provenientes de 83 parcelas temporárias de 10 m x 20 m distribuídas sistematicamente ao longo de 164 ha. As funções Log-normal, Gamma e Weibull foram ajustadas para as três espécies por meio do pacote fitdistrplus no programa R. O teste de aderência de Kolmogorov-Smirnov foi aplicado a 5% de probabilidade para avaliar os ajustes. As funções foram .selecionadas por meio do Critério de Informação Akaike (AIC) e do Critério de Informação Bayesiano de Schwaarz (BIC), além da análise gráfica das funções ajustadas. Os resultados indicaram que a estrutura diamétrica das três espécies é assimétrica positiva, as quais apresentam o padrão exponencial, sugerindo uma regeneração natural contínua. As estatísticas de AIC e BIC indicaram a função Log-normal para descrever a distribuição diamétrica de C. xanthocarpa e Z. tuberculosa, enquanto a função Gamma foi a mais adequada para P. gonoacantha. Para as três espécies, a análise gráfica mostrou que a função Gamma resultou no melhor ajuste, não apresentando tendências nas estimativas da densidade de frequências por classe de diâmetro.

https://doi.org/10.1590/1806-908820230000001

Global methylation in ‘Valencia’ orange seedlings associated with rootstocks and Huanglongbing
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Rodrigues, M. G. F.

; Nakanishi, E. S.

; Soutello, R. V. G.

; Diniz, F. O. N. H.

Brazilian Journal of Biology

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2023, Volume 83 elocation e277679

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

Abstract Citrus farming is one of the main activities that contributed to the Brazilian trade balance, with citrus seedling being the most important input in the formation of orchards to guarantee high productivity and fruit quality, which fundamentally depends on the chosen genetics. The present study aimed to analyze the existence of epigenetic variability in ‘Valencia’ orange plants on rootstocks, associated or not with HLB, through the quantification of the global methylation of its genome, in order to support works on genetic improvement and crop production. For this purpose, this work was carried out in greenhouse in a completely randomized experimental design, with 5 treatments and 6 replicates per treatment, each seedling being considered a replicate, namely: T1 = “Valencia” orange grafted onto “Rangpur” lemon, inoculated with HLB; T2 = “Valencia” orange grafted onto “Swingle” citrumelo, inoculated with HLB; T3 = “Valencia” orange grafted onto “Rangpur” lemon, without HLB inoculation ; T4 = “Valencia” orange grafted onto “Swingle” citrumelo, without HLB inoculation ; T5 = “Valencia” orange in free standing. The DNA was extracted from leaves and the ELISA test (Enzyme-Linked Immunosorbent Assay) was carried out, based on the use of receptors sensitive to 5-mC., to measure the relative quantification of global methylation between genomic orange DNAs . Since the control treatment (T5) consists of “Valencia” orange in free standing, it could be inferred that both the normal grafting technique in the seedling formation process and the inoculation of buds infected with HLB are external factors capable of changing the methylation pattern in the evaluated plants, including the DNA demethylation process, causing an adaptive response in association with the expression of genes previously silenced by genome methylation.

Resumo A citricultura é uma das principais atividades econômicas contribuintes à balança comercial brasileira, sendo a muda cítrica o insumo mais importante na formação de um pomar para a garantia de uma boa produtividade e qualidade dos frutos, a qual depende fundamentalmente da genética escolhida. O presente teve como objetivo analisar a existência de variabilidade epigenética em plantas de laranja Valência sobre porta-enxertos, associadas ou não ao HLB, por meio da quantificação da metilação global de seu genoma, a fim de subsidiar trabalhos de melhoramento genético e produção da cultura. Para tanto, o trabalho foi desenvolvido em casa de vegetação, em delineamento experimental inteiramente casualizado, com 5 tratamentos e 6 repetições por tratamento, sendo cada muda considerada uma repetição, sendo eles: T1 = laranja “Valência” enxertada sobre limão “Cravo”, inoculada com HLB; T2 = laranja “Valência” enxertada sobre citrumelo “Swingle”, inoculada com HLB; T3 = laranja “Valência” enxertada sobre limão “Cravo”, sem inoculação com HLB; T4 = laranja “Valência” enxertada sobre citrumelo “Swingle”, sem inoculação com HLB; T5 = laranja “Valência” em pé franco. Realizou-se a extração do DNA das folhas e em seguida realizou-se o teste de ELISA (Enzyme-Linked Immunosorbent Assay), baseada no uso de anticorpos sensíveis à 5-mC., para mensurar a quantificação relativa de metilação global entre os DNAs genômicos da laranja. Uma vez que o tratamento controle (T5) consta da laranja “Valência” em pé franco, pode-se verificar que tanto a técnica de enxertia normal no processo de formação de mudas, quanto a inoculação de borbulhas infectadas com HLB são fatores externos capazes de alterar o padrão de metilação nas plantas avaliadas, inclusive, no processo de desmetilação do DNA, provocando uma resposta adaptativa em associação a expressão de genes antes silenciados pela metilação do genoma.

https://doi.org/10.1590/1519-6984.277679

Thermal monitoring of a Cryosol in a high marine terrace (Half Moon Island, Maritime Antarctica)
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SCHAEFER, CARLOS ERNESTO G.R.

; FRANCELINO, MÁRCIO R.

; PEREIRA, ANTONIO B.

; MICHEL, ROBERTO F.M.

; SCHMITZ, DANIELA

; SACRAMENTO, IORRANA F.

; RODRIGUES, WILLIAM F.

; MIRANDA, CAIK O. DE

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Supl. 3 elocation e20210692

Resumo: En | Texto: En | PDF: En

Abstract Active layer and permafrost are important indicators of climate changes in periglacial areas of Antarctica, and the soil thermal regime of Maritime Antarctica is sensitive to the current warming trend. This research aimed to characterize the active layer thermal regime of a patterned ground located at an upper marine terrace in Half Moon Island, during 2015-2018. Temperature and moisture sensors were installed at different soil depths, combined with air temperature, collecting hourly data. Statistical analysis was applied to describe the soil thermal regime and estimate active layer thickness. The thermal regime of the studied soil was typical of periglacial environment, with high variability in temperature and water content in the summer, resulting in frequent freeze-thaw cycles. We detected dominant freezing conditions, whereas soil temperatures increased, and the period of high soil moisture content lasted longer over the years. Active layer thickness varied between the years, reaching a maximum depth in 2018. Permafrost degradation affects soil drainage and triggers erosion in the upper marine terrace, where permafrost occurrence is unlikely. Longer monitoring periods are necessary for a detailed understanding on how current climatic and geomorphic conditions affect the unstable permafrost of low-lying areas of Antarctica (marine terraces).

https://doi.org/10.1590/0001-3765202320210692

Multidisciplinary Scientific Cruises for Environmental Characterization in the Santos Basin – Methods and Sampling Design
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Moreira, Daniel L.

; Dalto, Adriana G.

; Figueiredo JR, Alberto G.

; Valerio, Aline M.

; Detoni, Amalia M. S.

; Bonecker, Ana C. T.

; Signori, Camila N.

; Namiki, Cláudia

; Sasaki, Dalton K.

; Pupo, Daniel V.

; Silva, Danilo A.

; Kutner, Deborah S.

; Duque-Castaño, Diana C.

; Marcon, Eduardo H.

; Gallotta, Fabiana D. C.

; Paula, Fabiana S.

; Gallucci, Fabiane

; Roque, Gabriela C. F.

; Campos, Giulia S.

; Fonseca, Gustavo

; Mattos, Gustavo

; Lavrado, Helena P.

; Silveira, Ilson C. A. da

; Costa, Jessica O.

; Santos Filho, João R. dos

; Carneiro, Juliane C.

; Moreira, Julio C.F.

; Rozo, Laura

; Araujo, Leandro F.M.

; Lazzari, Letícia

; Silva, Letícia O. da

; Michelazzo, Luan S.

; Fernandes, Luciano F.

; Dottori, Marcelo

; Araújo Jr., Marcus A. G. de

; Chuqui, Mateus G.

; Ceccopieri, Milena

; Borges-Silva, Milton

; Kampel, Milton

; Bergo, Natascha M.

; Silva, Paulo V. M.

; Tura, Pedro M.

; Moura, Rafael B. de

; Romano, Renato G.

; Martins, Renato P.

; Carreira, Renato S.

; Toledo, Rodrigo G.A.

; Bonecker, Sérgio L.C.

; Disaró, Sibelle T.

; Rodrigues, Silvana V.

; Corbisier, Thais N.

; Vicente, Thaisa M.

; Paiva, Vitor G. de

; Pellizari, Vivian H.

; Belo, Wellington C.

; Brandini, Frederico P.

; Sousa, Silvia H.M

Ocean and Coastal Research

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2023, Volume 71 Supl. 3 elocation e23022

Resumo: En | Texto: En | PDF: En

Abstract The Santos Basin (SB) is the main petroliferous basin in the Brazilian continental margin and one of the most studied marine areas in Brazil. However, historical data suggest that new efforts should be carried out to acquire quantitative biological data, especially in the deep sea, to establish the baseline of essential ocean variables in different ecosystems for future monitoring programs. The Brazilian energy company Petrobras planned and executed 24 oceanographic cruises over a period of 2 years to assess the benthic (SANSED cruise) and pelagic (SANAGU cruise) systems of the SB (356 days at sea in 2019 and 2021/2022). These efforts were part of the Santos Project, which comprised a comprehensive environmental study aimed at investigating benthic and pelagic variables to characterize ecology, biogeochemistry, thermohaline properties of water masses, and ocean circulation patterns, geomorphology, and sedimentology, as well as organic and inorganic chemistry. Here we present the detailed sampling designs and the field methods employed on board, during the SB scientific cruises. All sampling protocols were based on standardized approaches. For the benthos analyses, triplicate sediment samples were performed using a GOMEX-type box corer (0.25 m²) or a large modified Van Veen grab (0.75 m²) at 100 stations ranging from 25 to 2400 m depth. At each station, 25 geochemical and physico-chemical parameters were analyzed in addition to micro-, meio-, and macrofauna and living foraminifera samples. For the pelagic system, 60 stations were selected to investigate the plankton community, ranging in size from pico- to macroplankton, through vertical, horizontal, and oblique net hauls (20, 200, and 500 μm mesh size), as well as 25 biogeochemical parameters collected with an aid of a CTD-rosette sampler. Part of this scientific information also serves the Regional Environmental Characterization Project (PCR-BS) in support of Petrobras’ Santos Basin drilling licensing process led by the Brazilian Environmental Agency – IBAMA. This project contributes to the sustainable development of the SB, in line with the guidelines of the United Nations Decade of Ocean Science for Sustainable Development.

https://doi.org/10.1590/2675-2824071.22072dlm

Fish diversity in the rivers that drain the Baixada Maranhense and the Mearim basin in northeastern Brazil
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Limeira-Filho, D.

; Moraes, P. S. S.

; Almeida, M. S.

; Silva, A. C. C.

; Silva, J. L. N.

; Farias-Rodrigues, L.

; Teixeira, B. R. S.

; Anjos, J. V. X.

; Birindelli, J. L. O.

; Barros, M. C.

; Fraga, E. C.

Brazilian Journal of Biology

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2023, Volume 83 elocation e273525

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

Abstract The Baixada Maranhense Environmental Protection Area of the Brazilian state of Maranhão encompasses a biologically rich region that includes the basins of four principal rivers, the Mearim, Pericumã, Pindaré, and Turiaçu, which form a complex of wetlands. The present study provides a comprehensive inventory of the fish fauna of the rivers that drain the Baixada Maranhense based on the identification of voucher specimens that were deposited in a scientific collection. Expeditions were conducted between 2014 and 2020. The inventory identified a total of 100 fish species representing 79 genera, 34 families, and 11 orders, which are found in both freshwater and estuarine environments. Six (Potamotrygon orbignyi, Leporinus piau, Moenkhausia loweae, Serrasalmus spilopleura, Pachypops fourcroi and Peckoltia greedoi) of the 100 taxa identified here are considered to be new records for one or more of the basins surveyed during this study, based on the existing data, while four – Colossoma macropomum, Megaleporinus macrocephalus, Cichla sp. and Cichla kelberi – are not native. The most speciose orders were the Siluriformes and Characiformes, while the most diverse families were the Loricariidae, Characidae, Auchenipteridae, Cichlidae, and Serrasalmidae. These data are consistent with the findings of most of the previous studies of freshwater ecosystems in the Neotropical region, in particular those of the rivers of Maranhão. The results of the present study represent an important advance in the understanding of the diversity of the fish fauna of the Mearim, Pericumã, Pindaré, and Turiaçu rivers, which are still poorly studied, and have likely had their diversity underestimated up to now.

Resumo A Área de Proteção Ambiental da Baixada Maranhense do estado brasileiro do Maranhão abrange uma região biologicamente rica que engloba as bacias de quatro rios principais, Mearim, Pericumã, Pindaré e Turiaçu, formando um complexo de áreas inundáveis. O presente estudo fornece um inventário abrangente da ictiofauna de rios que drenam a Baixada Maranhense a partir da identificação de espécimes com material testemunho depositados em coleção científica. As expedições foram realizadas entre 2014 e 2020. O inventário identificou um total de 100 espécies de peixes representando 79 gêneros, 34 famílias e 11 ordens que são encontradas em ambientes de água doce e estuarinos. Dos 100 táxons identificados, seis (Potamotrygon orbignyi, Leporinus piau, Moenkhausia loweae, Serrasalmus spilopleura, Pachypops fourcroi e Peckoltia greedoi) são considerados novo registros para uma ou mais das drenagens aqui levantadas, em comparação com os dados existentes, enquanto quatro: Colossoma macropomum, Megaleporinus macrocephalus, Cichla sp. e Cichla kelberi não são nativos. As ordens mais especiosas foram Siluriformes e Characiformes, enquanto as famílias mais diversas foram Loricariidae, Characidae, Auchenipteridae, Cichlidae e Serrasalmidae. Esses dados corroboram a maioria dos outros estudos de ecossistemas de água doce da região Neotropical, em particular o dos rios do Maranhão. Os resultados do presente estudo representam um avanço importante no conhecimento da diversidade da fauna de peixes dos rios Mearim, Pericumã, Pindaré e Turiaçu, que ainda são pouco estudados e provavelmente com uma diversidade subestimada.

https://doi.org/10.1590/1519-6984.273525

Diversity and composition of ferns and lycophytes in a fragmented landscape in Ecuadorian Amazonia
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Moulatlet, Gabriel Massaine

; Riaño, Karolina

; Rodrigues, Flávio R. O.

; Meneses, Pablo

; Zuquim, Gabriela

Rodriguésia

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2023, Volume 74 elocation e00592023

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

Abstract Tropical forests have been subjected to increasing deforestation, leading to severe habitat loss and fragmentation of the landscape. Studies of various plant groups-indicate alteration in species diversity and assemblage composition in response to these impacts. How theses impacts affect ferns and lycophytes, however, is less well known. In this study we evaluate the effects of habitat loss and fragmentation on ferns and lycophytes in lowland non-inundated forests in Ecuadorian Amazonia. We obtained assemblage information from thirteen plots located in gradients of habitat loss and fragmentation (as measured by the landscape fragmentation index: fragindex) and used community and diversity indices to evaluate species responses. We found 3,824 individuals of 55 species. The plot with the highest fragindex value (more than 20% of habitat loss and fragmentation) had the lowest diversity, but the highest diversity was found in plots with fragindex values from 12% to 21% of habitat loss and fragmentation rather than in the landscapes without deforestation. Although community composition varied along the fragindex gradient, species turnover was not significantly related to this index. These results suggest that changes in the landscape caused by deforestation alter the availability of habitats, consequently affecting the distribution patterns of ferns and lycophytes.

Resumo O incremento do desmatamento em florestas tropicais tem causado uma perda severa de habitats e fragmentação da paisagem. As respostas das espécies a esses impactos antrópicos indicam alteração na diversidade e composição das comunidades de espécies e têm sido estudadas para vários grupos de plantas. Como esses impactos afetam a comunidade de samambaias e licófitas, no entanto, é menos conhecido. Neste estudo, avaliamos os efeitos da perda e fragmentação de habitat em samambaias e licófitas em florestas não inundadas de terras baixas na Amazônia equatoriana (bacia amazônica ocidental). Obtivemos informações da comunidade de treze parcelas localizadas em um gradiente de fragmentação (medido por um índice de fragmentação da paisagem: o fragindex) e usamos índices de comunidade e diversidade para avaliar as respostas das espécies. Encontramos 3.824 indivíduos de 55 espécies de samambaias e licófitas. A parcela com o maior valor de fragindex (mais de 20% de perda e fragmentação de habitat) teve a menor diversidade, mas a maior diversidade foi encontrada em parcelas com valores de fragindex entre 12% e 21% e não nas parcelas em paisagens sem desmatamento. Embora a composição da comunidade tenha variado ao longo do gradiente do fragindex, a renovação de espécies não foi significativamente relacionada a esse índice. Esses resultados sugerem que as mudanças na paisagem causadas pelo desmatamento alteram a disponibilidade de habitats, afetando consequentemente os padrões de distribuição de samambaias e licófitas.

https://doi.org/10.1590/2175-7860202374069

Anatomical and histochemical characterization of stem and leaves of Bauhinia pulchella Benth. (Fabaceae)
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Carvalho, J. L.

; Magalhães, C. S.

; Rodrigues, R. O.

; Randau, K. P.

Brazilian Journal of Biology

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2023, Volume 83 elocation e273614

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

Abstract Bauhinia pulchella Benth. (Fabaceae), is native to Brazil and popularly known as pata-de-bode. In folk medicine, it is used to treat diabetes. Pharmacological studies have demonstrated different properties, such as cytotoxic and antioxidant, and different chemical constituents, such as essential oil, triterpenoids, steroids, among others. In order to highlight the morphological differences of the species B. pulchella from the others of the genus, and its pharmacological potential, the present study aimed to carry out the anatomical and histochemical characterization of the stem and leaves of B. pulchella. Usual methods in plant anatomy were used in the preparation of semi-permanent slides containing cross sections of the stem, petiole and leaf blade and paradermal sections of the leaf blade for analysis in light microscopy and polarized light. Histochemical tests were also performed to localize the metabolites in the stem and leaf blade. The stem of B. pulchella has a cylindrical outline, the bark is composed of 7-8 layers of cells and discontinuously distributed sclerenchyma; petiole presents flat convex contour, prominences in the adaxial region, concentric amphicrivral vascular bundle, surrounding a small concentric anfivasal intramedullary bundle, adaxially two accessory bundles and tector trichomes; leaf blade with anisocytic and tetracytic stomata on the adaxial surface and anisocytic, tetracytic and anomocytic on the abaxial surface; and midrib with plain-convex outline, 1-2 layers of collenchyma and covering trichomes. Characteristics that differ from other species of the genus Bauhinia. Alkaloids, phenolic compounds, lipophilic compounds, lignin, triterpenes, steroids and tannins were observed in the species. The results are fundamental for the pharmacobotanical standardization of the studied species.

Resumo Bauhinia pulchella Benth. (Fabaceae), é nativa do Brasil e popularmente mais conhecida como pata-de-bode. Na medicina popular, é utilizada no tratamento de diabetes. Estudos farmacológicos demonstraram diferentes propriedades, como por exemplo, citotóxica e antioxidante, e diferentes constituintes químicos, como óleo essencial, triterpenoides, esteroides, entre outros. A fim de evidenciar as diferenças morfológicas da espécie B. pulchella das demais do gênero, e seu potencial farmacológico, o presente estudo teve como objetivo realizar a caracterização anatômica e histoquímica do caule e das folhas de B. pulchella. Métodos usuais em anatomia vegetal foram utilizados na preparação de lâminas semipermanentes contendo seções transversais do caule, pecíolo e lâmina foliar e seções paradérmicas da lâmina foliar para análises em microscopia óptica de luz e luz polarizada. Testes histoquímicos também foram realizados para localizar os metabólitos no caule e lâmina foliar. O caule de B. pulchella apresenta contorno cilíndrico, casca composta de 7-8 camadas de células e esclerênquima distribuído descontinuamente; pecíolo apresenta contorno plano convexo, proeminências na região adaxial, feixe vascular concêntrico anficrivral, circundando pequeno feixe concêntrico anfivasal intramedular, adaxialmente dois feixes acessórios e tricomas tectores; lâmina foliar com estômatos anisocíticos e tetracíticos na face adaxial e anisocíticos, tetracíticos e anomocíticos na face abaxial; e nervura central com contorno plano-convexo, 1-2 camadas de colênquima e tricomas tetores. Características que difere de outras espécies do gênero Bauhinia. Alcaloides, compostos fenólicos, compostos lipofílicos, lignina, triterpenos, esteroides e taninos foram observados na espécie. Os resultados são fundamentais para a padronização farmacobotânica da espécie estudada.

https://doi.org/10.1590/1519-6984.273614

DITERPENOS ENT-ABIETANOS DE Euphorbia phosphorea (EUPHORBIACEAE)
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Meireles, Roseana A. R.

; Abreu, Lucas S.

; Silva, Joanda Paolla R. e

; Cavalcanti, Andreza B. S.

; Menezes, Renata Priscila B. de

; Rodrigues, Gabriela Cristina S.

; Rodrigues Junior, Valnês S.

; Melo, José Iranildo M. de

; Kato, Massuo Jorge

; Costa, Vicente Carlos de O.

; Scotti, Marcus Tullius

; Tavares, Josean F.

Química Nova

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Set 2022, Volume 45 Nº 9 Páginas 1092 - 1097

Resumo: Pt | Texto: Pt | PDF: Pt

Phytochemical study of the roots of Euphorbia phosphorea Mart. (Euphorbiaceae) was carried out through chromatographic techniques, resulting in the isolation of a new ent-abietane diterpene named 11β,12β-dihydroxy-ent-abieta-8(14),13(15)-dien-16,12α-olide (1), and of nine known ent-abietane diterpenes jolkinolide A (2), jolkinolide E (3), euphorin H (4), euphopilolide (5) jolkinolide F (6), ent-12-hydroxy-12[R]-abieta-8(14),13(15)-dien-16,12-olide (7), ent-11α-hydroxyabieta-8(14),13(15)-dien-16,12α-olide (8), 17-hydroxyjolkinolide B (9) and caudicifolin (10). The structures of all compounds were established using spectroscopic techniques such as 1D and 2D NMR, and the structure of the compound 1 was established also with MS, IR and ECD. All compounds were submitted to an in silico study through of a predictive model and then submitted to in vitro tests against Mycobacterium tuberculosis and M. smegmatis for evaluation of their antimycobacterial activity. Compounds 5 and 9 showed mycobacterial growth inhibition with MIC values of 62.5 μM against M. tuberculosis and M. smegmatis, respectively.

https://doi.org/10.21577/0100-4042.20170932

10.

Wheelchair basketball improves the treatment of urinary tract infection in people with motor disabilities: a clinical trial
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Cavalcante, Ramirie N.

; Santos, Adeliana C. S.

; Rodrigues, Rosilene Andrade Silva

; Napoleão, Amanda Colichio Bini

; Balogun, Sikiru O.

; Andrade, Benedito R. M. de

; Fett, Carlos A.

; Zavala, Arturo A. Z.

; Arunachalam, Karuppusamy

; Oliveira, Ruberlei G. de

Revista da Associação Médica Brasileira

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Mai 2022, Volume 68 Nº 5 Páginas 559 - 567

Resumo: En | Texto: En | PDF: En

SUMMARY OBJECTIVE: Few studies on physical medicine and rehabilitation analyze the benefit of wheelchair basketball in people with motor disabilities. Given these, this study aimed to investigate the effect of the intervention of wheelchair basketball on urinary tract infection in people with motor disabilities. METHODS: A 12-month experimental follow-up was conducted in a single-center study. A total of 48 male individuals aged 18–55 years were allocated to the control group and experimental group. The experimental group practiced wheelchair basketball for 2 h, twice a week. Intra- and intergroup comparisons were made pre- and post-interventions over urinary tract infection. RESULTS: There was a significant improvement in urinary tract infection and urine culture in pre- and post-intervention antibiograms, respectively. Moreover, the intergroup comparison presented a decrease in infection caused by Klebsiella pneumoniae, as well as an increase in the time variability of partially activated thromboplastin, average corpuscular hemoglobin, and hemoglobin and platelets. In the experimental group, there was an increase in hemoglobin and hematocrit and a decrease in glycated hemoglobin (%HbA1C). On the intragroup comparison, there was a reduction of triiodothyronine (T3), %HbA1C, interleukin-6 pre-intervention, and C-reactive protein post-intervention. CONCLUSIONS: There was a decrease in urinary tract infection and improvement in biochemical, immunological, and microbiological biomarkers evaluated with physical exercise practice by wheelchair basketball, as well as by multiprofessional follow-up and health guidance.

https://doi.org/10.1590/1806-9282.20210896

11.

Art and science: impact of semioccluded vocal tract exercises and choral singing on quality of life in subjects with congenital GH deficiency
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Andrade, Bruna M. R. de

; Valença, Eugenia H. O.

; Salvatori, Roberto

; Oliveira Neto, Luiz A.

; Souza, Anita H. O.

; Oliveira, Alaíde H. A.

; Oliveira, Mario C.P.

; Melo, Enaldo V.

; Carvalho, Susana de

; Sales, Neuza J

; Monteiro, Gisane C.

; Lima, José Marcel de

; Annunziato, Marcos Felipe Harder

; Mannis, Guilherme Daniel Breternitz

; Souza, Lucas E. de A.

; Goes, Yasmin D.

; Carvalho, Thayza S.

; Farias, Celiane de

; Santos, Michela P. dos

; Cardoso, Gabriela P. F.

; Sousa, Carla S. Pereira

; Santana, Julia Rodrigues

; Sales, Ester Almeida

; d’Avila, Jeferson Sampaio

; Aguiar-Oliveira, Manuel H.

Archives of Endocrinology and Metabolism

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Abr 2022, Volume 66 Nº 2 Páginas 198 - 205

Resumo: En | Texto: En | PDF: En

ABSTRACT Objectives: Currently, not much is known about the interactions between voice and growth hormone (GH). We have described large kindred with isolated GH deficiency (IGHD) due to a GHRH receptor mutation, resulting in severe short stature and high-pitched voice. These IGHD individuals have little interest in GH treatment, as they consider themselves “short long-lived people”, rather than patients. Interestingly, they report normal general quality of life, but they rate their Voice-Related Quality of Life (V-RQOL) as low. Here, we assessed the social and auditory-perceptual impacts of artistic-intervention voice therapy with semioccluded vocal tract exercises (SOVTE) and choral singing, on their voices. Material and methods: Seventeen GH-naïve adult IGHD individuals were enrolled in a single-arm interventional pre-post study with 13 weekly sessions of choir singing over 90 days. Outcome measures were V-RQOL scores, self-assessment of voice, and auditory-perceptual analysis (GRBAS scale, G: grade of the severity of dysphonia; R: roughness; B: breathiness; A: asthenia; and S: strain). Results: Marked improvements in total (p = 0.0001), physical (p = 0.0002), and socioemotional (p = 0.0001) V-RQOL scores and in self-assessment of voice (p = 0.004) were found. The general grades of vocal deviation (p = 0.0001), roughness (p = 0.0001), breathiness (p = 0.0001) and strain (p = 0.0001) exhibited accentuated reductions. Conclusions: Voice therapy with semioccluded vocal tract exercises and choral training improved social impact and perceptual voice assessments in IGHD subjects and markedly improved their voice-related quality of life. This is particularly important in a setting where GH replacement therapy is not widely accepted.

https://doi.org/10.20945/2359-3997000000449

12.

Direct seeding as a recruitment alternative for the threatened tropical palm Syagrus coronata (Mart.) Beccari in Brazilian dry forest
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Ferreira, J. R.

; Silva, J. O.

; Morgado, M. V.

; Macêdo, J. D. B

; Rodrigues, P. M. S

Brazilian Journal of Biology

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2022, Volume 82 elocation e264348

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

Resumo A perda de habitat diminui a biodiversidade e ameaça os serviços ecológicos. A utilização de técnicas para recomposição da vegetação como a semeadura direta parece promissora, principalmente por diminuir gastos e mão de obra. O objetivo do estudo foi investigar quais são os principais filtros ecológicos que podem inibir o sucesso da semeadura direta, utilizando a espécie Syagrus coronata (Mart.) Beccari em habitat manejado e natural na Caatinga. Foram testadas as hipóteses: (1) habitat manejado (pastagem) e habitat natural (vegetação de caatinga) apresentam diferenças no destino de sementes; e (2) frutos despolpados terão maior sucesso germinativo comparado aos frutos com polpa. O destino das sementes foi avaliado por dois anos consecutivos, ano I (2016-2017) e ano II (2017-2018), no qual 800 frutos maduros foram enterrados ao longo de transectos de 300 m, metade com tratamento de despolpamento, e monitorados ao longo de 240 dias. A maior sobrevivência de sementes ocorreu no ano II, este resultado pode estar associado a maior pluviosidade registrada durante o experimento, considerando que não houve diferenças entre os habitats. A remoção da polpa facilitou a germinação e reduziu a predação, possivelmente, pela remoção de larvas de invertebrados, antes que elas alcançassem o endocarpo. A dessecação foi a maior causa de mortalidade em todo o estudo e foi maior no habitat manejado, a escassez hídrica pode ter causado a desativação de mecanismos antioxidantes e afetado o embrião. Embora a remoção de polpa possa favorecer a germinação, esse procedimento não seria indicado para pastagens por favorecer a dessecação. O estudo mostrou como as interações planta-animal podem agir diante da funcionalidade do habitat e tratamento do fruto. Mais estudos sobre as relações ecológicas precisam ser realizados para aumentar a compreensão de como a modificação do habitat afeta o funcionamento de ecossistemas de Caatinga.

Abstract Habitat loss reduces biodiversity and threatens ecological services. The use of techniques for vegetation restoration such as direct seeding seems promising, mainly because it reduces costs and labor. The aim of this study was to investigate which are the main ecological filters that can inhibit the success of direct seeding, using Syagrus coronata (Mart.) Beccari (Arecaceae), a species that has great ecological and extractive importance for the Brazilian semi-arid region, and is found in habitats with different management intensities. The following hypotheses were tested: (1) managed habitat (pasture) and natural habitat (caatinga vegetation) show differences in seed fate; and (2) defleshed fruits will have greater seed germination success compared to not defleshed. Seed fate was evaluated for two consecutive years, year I (2016-2017) and year II (2017-2018). Within these years, 800 mature fruits were buried along 300 m transects, half with defleshing treatment, and monitored during 240 days. The highest seed survival occurred in year II, this result may be associated with higher rainfall recorded during the experiment, considering that there was no difference in seed germination between habitats. Defleshing facilitated germination and reduced insect predation, likely by removing invertebrate larvae before they have reached the seed. Desiccation was the major cause of mortality in the entire study and was higher in the managed habitat. Water insufficiency may have caused the deactivation of antioxidant mechanisms and affected the embryo. Although defleshing may favor germination, this procedure would not be indicated for pastures as it favors desiccation. The study showed how habitat management and fruit defleshing can affect seed fate. More studies on ecological relationships need to be carried out to increase understanding of how habitat modification affects the functioning of arid ecosystems.

https://doi.org/10.1590/1519-6984.264348

13.

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

Anais da Academia Brasileira de Ciências

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2022, Volume 94 elocation e20211361

Resumo: En | Texto: En | PDF: En

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.

https://doi.org/10.1590/0001-3765202220211361

14.

Crambe cake protein as a replacement for soybean meal protein: Intake, digestibility, and ruminal parameters in lamb diets
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Poveda-Parra, A.R.

; Pereira, E. S.

; Prado-Calixto, O. P.

; Guerra, G. L.

; Pires, K. A.

; Lopes, M. R.

; Rodrigues, E. R.

; Cavalheiro Junior, E. R.

; do Carmo, J. P. M.

; Mizubuti, I. Y.

South African Journal of Animal Science

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2022, Volume 52 Nº 6 Páginas 873 - 885

Resumo: En | Texto: En | PDF: En

The objective was to evaluate different levels of crambe cake protein (0, 250, 500, 750 and 1000 g/kg of DM) to replace soybean meal protein on the intake, apparent digestibility coefficient (ADC), blood glucose, ruminal fermentation, and protozoal population in lambs. Two experiments were performed. In experiment one, 40 crossbred male lambs weighing 20 ± 3.45 kg were used, distributed in a completely randomized design, to study intake and ruminal parameters. In experiment two, 25 crossbred male lambs weighing 23.44 ± 1.04 kg were used to study digestibility. The intake of dry matter and total carbohydrate (TC) (kg/lambs/day and g/kg0.75), crude protein (kg/lambs/day) and final body weight decreased with increase of crambe cake protein as a replacement for soybean meal protein, while ether extract ( EE) intake (kg/lambs/day and g/kg075) increased. The ADC of EE presented a positive linear effect and the ADC of TC and non-fibrous carbohydrates presented a negative linear effect. There was no interaction within treatments and collection period (0, 3, 6 and 9 h) on ruminal fluid characteristics. Blood glucose presented a quadratic effect for levels of crambe cake protein in diets (max. P = 35.18%), and linear increase for collection period. Ruminal pH showed a quadratic effect for sampling hours (max. P = 5.43 h). For protozoa evaluation, the total amount, Entodinium, and Eudiplodium presented linear decreasing effects with treatment, while Isotricha, Eudiplodium, Ostracodinium and the total amount of protozoa had a linear decrease with sampling hours. Soybean meal protein can be replaced by crambe cake protein at up to 250 g/kg DM.

https://doi.org/10.4314/sajas.v52i6.13

15.

Gas exchange and leaf area of banana plants under salt stress inoculated with growth-promoting bacteria
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Rodrigues, Ana J. O.

; Araújo, Beatriz de A.

; Bezerra, Marlos A.

; Silva, Christiana de F. B. da

; Sousa, Alan B. O. de

; Nogueira, Cynthia M. R.

Revista Brasileira de Engenharia Agrícola e Ambiental

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Nov 2021, Volume 25 Nº 11 Páginas 779 - 786

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

RESUMO Os pomares de banana em regiões áridas e semiáridas requerem o uso de irrigação. Porém, a presença de altos teores de sais na água pode prejudicar o desenvolvimento das plantas, exigindo a busca de tecnologias para amenizar os efeitos do estresse. O objetivo deste estudo foi avaliar as trocas gasosas e área foliar em mudas de bananeira da cultivar Prata Catarina inoculadas com cepas de Bacillus spp. sob diferentes valores de condutividade elétrica da água de irrigação. O experimento foi conduzido em casa de vegetação na Embrapa Agroindústria Tropical, Fortaleza, Ceará, Brasil. O delineamento utilizado foi em blocos casualizados, em esquema fatorial 4 × 4, sendo o primeiro fator os tratamentos de inoculação: sem qualquer aplicação; fertilizante de liberação lenta; as linhagens 186 e 109 e o segundo fator a condutividade elétrica da água de irrigação (0,5; 1,5; 3,0; 4,5 dS m-1), em cinco blocos sendo cada parcela constituída por três plantas. A condutividade elétrica da água de irrigação influenciou negativamente as trocas gasosas da bananeira cv. Prata Catarina na fase vegetativa, aos 89 dias de cultivo. Os Bacillus spp. 186 e 109 não melhoraram as trocas gasosas nem aumentaram a área foliar das plantas em condições de salinidade.

ABSTRACT Banana orchards in arid and semiarid regions require the use of irrigation. However, the presence of high concentration of salts in water can impair the development of plants, requiring the evaluation of new technologies to mitigate the effects of stress. The objective of this study was to evaluate gas exchange and leaf area in banana seedlings of the cultivar Prata Catarina inoculated with strains of Bacillus spp. under different electrical conductivities of irrigation water. The experiment was carried out in a greenhouse at Embrapa Tropical Agroindustry, Fortaleza, Ceará state, Brazil. The design used was in randomized blocks, in a 4 × 4 factorial scheme, with the first factor being the inoculation treatments: without any application; slow-release fertilizer; Strain 186 and Strain 109, and the second factor being the electrical conductivity of irrigation water (0.5; 1.5; 3.0; 4.5 dS m-1), in five blocks and each plot consisting of three plants. The electrical conductivity of irrigation water negatively influenced the gas exchange of banana cv. Prata Catarina in the vegetative stage, during the 89 days of cultivation. The Bacillus spp. strains 186 and 109 did not improve the gas exchange and leaf area of plants under salinity conditions.

https://doi.org/10.1590/1807-1929/agriambi.v25n11p779-786 108 downloads

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