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The Cretaceous Neornithine record and new Vegaviidae specimens from the López de Bertodano Formation (Upper Maastrichthian) of Vega Island, Antarctic Peninsula
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SOUZA, GEOVANE A. DE

; BULAK, BRUNO A.

; SOARES, MARINA B.

; SAYÃO, JULIANA M.

; WEINSCHÜTZ, LUIZ CARLOS

; BATEZELLI, ALESSANDRO

; KELLNER, ALEXANDER W.A.

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Suppl. 3 elocation e20230802

Abstract: En | Text: En | PDF: En

Abstract A worldwide revision of the Cretaceous record of Neornithes (crown birds) revealed that unambiguous neornithine taxa are extremely scarce, with only a few showing diagnostic features to be confidently assigned to that group. Here we report two new neornithine specimens from Vega Island (López de Bertodano Formation). The first is a synsacrum (MN 7832-V) that shows a complex pattern of transversal diverticula intercepting the canalis synsacri, as in extant neornithines. Micro-CT scanning revealed a camerate pattern of trabeculae typical of neornithines. It further shows the oldest occurrence of lumbosacral canals in Neornithes, which are related to a balance sensing system acting in the control of walking and perching. The second specimen (MN 7833-V) is a distal portion of a tarsometatarsus sharing with Vegavis iaai a straight apical border of the crista plantaris lateralis. Osteohistologically the tarsometatarsus shows a thick and highly vascularized cortex that lacks any growth marks, resembling Polarornis gregorii. The cortex is osteosclerotic as in other extinct and extant diving neornithines. These new specimens increase the occurrences of the Cretaceous avian material recovered from the Upper Cretaceous strata of the James Ross Sub-Basin, suggesting that a Vegaviidae-dominated avian assemblage was present in the Antarctic Peninsula during the upper Maastrichtian.

https://doi.org/10.1590/0001-3765202320230802

TWO-DIMENSIONAL REPRESENTATION FOR TWO-STAGE NETWORK DEA MODELS
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Torres, Bruno Guimarães

; Reis, Juliana de Castro

; Mello, João Carlos C. B. Soares de

Pesquisa Operacional

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2022, Volume 42 elocation e258055

Abstract: En | Text: En | PDF: En

ABSTRACT We propose two-dimensional representations for the efficient frontier for two different Network DEA (NDEA) models. Both representations follow a previous study that developed a generalization of the two-dimensional representation method for the classic DEA using a new form of linearization. The graphical representation of the efficient frontier allows managers and decision-makers unfamiliar with linear programming and DEA to understand the results obtained simply and clearly. In this study, we can obtain graphs that provide information about the efficiencies of each DMU. Furthermore, for the NDEA with an efficiency decomposition approach, it is possible to obtain a graph to evaluate the technical efficiency for each stage, as well as for the overall efficiency. The NDEA model based on efficiency composition only produces one graph. However, this unique representation shows the stage-level and the overall process level information within the same graph.

https://doi.org/10.1590/0101-7438.2022.042.00258055

Seep hunting in the Santos Basin, Southwest Atlantic: sampling strategy and employed methods of the multidisciplinary cruise BIOIL 1
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Sumida, Paulo Y. G.

; Pellizari, Vivian H.

; Lourenço, Rafael A.

; Signori, Camila N.

; Bendia, Amanda G.

; Carrerette, Orlemir

; Nakamura, Fernanda M.

; Ramos, Raissa B.

; Bergamo, Gilberto

; Souza, Bruno H. M.

; Butarelli, Ana C. A.

; Passos, Júlia G.

; Dias, Rodolfo J. S.

; Maly, Mascimiliano

; Banha, Thomás N. S.

; Güth, Arthur Z.

; Soares, Luiza F.

; Perugino, Paula D. N.

; Santos, Felipe R.

; Santana, Frederico R.

; Mahiques, Michel M. de

Ocean and Coastal Research

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2022, Volume 70 Suppl. 2 elocation e22031

Abstract: En | Text: En | PDF: En

Abstract The continental margin off the southeastern Brazilian coast is punctuated by a series of geological-geomorphological features, such as subsurface saline diapirs and pockmarks at the seafloor interface, which evidence the abundant presence of oil and gas in the region. In several of these sites, hydrocarbons can be naturally released into the water column, areas are cold seep areas. These are marked by the presence of oil- and gas-dependent ecosystems, where specific organisms are able to fix carbon from hydrocarbon chemosynthesis. In addition, light hydrocarbon fluid flow through the sediment may build up authigenic carbonates that can be further colonized by cold-water corals, generating large carbonate mounds over geological time, normally positioned at the border of these pockmark features. The present work reports on a multidisciplinary oceanographic cruise carried out in the Santos Basin, SW Atlantic, to seek, map, and collect geological, chemical, and biological data from different deep-sea habitats. The cruise occurred in November 2019 on the R/V Alpha Crucis of the Oceanographic Institute of the University of São Paulo (IOUSP). We intended to discover and detail different geomorphological features, characterize free-living and symbiotic microorganisms, determine the chemosynthetic rates in relation to heterotrophic microbial production, and characterize the fauna and study their ecological and evolutionary links within and across ocean basins. All discoveries made during the cruise and their respective results will be presented separately in several papers that comprise this special volume.

https://doi.org/10.1590/2675-2824070.22077pygs

Dermatobiosis in Panthera onca: first description and multinomial logistic regression to estimate and predict parasitism in captured wild animals
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May-Junior, Joares Adenilson

; Fagundes-Moreira, Renata

; Souza, Vinícius Baggio de

; Almeida, Bruno Albuquerque de

; Haberfeld, Mario B.

; Sartorelo, Leonardo R.

; Ranpim, Lilian Elaine

; Fragoso, Carlos Eduardo

; Soares, João Fabio

Revista Brasileira de Parasitologia Veterinária

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2021, Volume 30 N. 1 elocation e023820

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

Resumo Dermatobia hominis é um parasito amplamente distribuído nas regiões neotropicais. A fase parasitária do ciclo é caracterizada pela formação de um nódulo subcutâneo no hospedeiro, que pode promover infestação por outros dípteros e infecções cutâneas. O objetivo deste relato é registrar o parasitismo por D. hominis em Panthera onca de vida livre, capturado no pantanal brasileiro e determinar fatores biológicos e meteorológicos significativos que podem influenciar a presença de parasitismo larval em onças-pintadas selvagens capturadas. Entre 2011 e 2020, 34 onças-pintadas foram capturadas e examinadas manualmente em busca de lesões características de miíase. Por compressão manual nos nódulos subcutâneos, larvas classificadas morfologicamente como D. hominis (primeiro e terceiro instares) foram coletadas de 13 onças-pintadas. Uma regressão logística multinomial mostrou que onças-pintadas adultas tinham chances 16,49 vezes maiores de serem parasitadas do que subadultos. Assim, onças-pintadas capturadas na temporada de julho a setembro têm probabilidade 34,01 e 11,42 vezes maior de serem parasitadas em comparação com as temporadas de outubro a dezembro e de abril a junho, respectivamente, o que está associado à alta precipitação total mensal na temporada anterior. O presente estudo é o primeiro a descrever parasitismo por larvas de D. hominis em onças-pintadas.

Abstract Dermatobia hominis is a parasite widely distributed in neotropical regions. The parasitic phase of the cycle is characterized by the formation of a subcutaneous nodule in the host, which can promote infestation by other dipterans and skin infections. The aim of this report is to register parasitism by D. hominis in free-ranging Panthera onca captured in the Brazilian wetland and to determine significant biological and meteorological factors that are likely to influence the presence of larval parasitism in captured wild jaguars. Between 2011 to 2020, 34 jaguars were captured and examined manually by searching for lesions characteristic of myiasis. By manual compression in the subcutaneous nodules, larvae morphologically identified as D. hominis (first and third instars) were collected from 13 jaguars. A multinomial logistic regression showed that adult jaguars had 16.49-fold higher odds of being parasitized than subadults. Thus, jaguars captured in the season of July–September have 34.01- and 11.42-fold higher odds of being parasitized compared to the seasons of October–December and April–June, respectively, which is associated with high total monthly precipitation in the previous season. The present study is the first to describe parasitism by D. hominis larvae in jaguars.

https://doi.org/10.1590/s1984-29612021003 431 downloads

Diversity and microhabitat use of benthic invertebrates in an urban forest stream (Southeastern Brazil)
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Ferreira, Vitor Manuel B.

; Paiva, Nathália de O.

; Soares, Bruno E.

; Moraes, Maíra

Iheringia. Série Zoologia

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2021, Volume 111 elocation e2021020

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

RESUMO Diversidade e uso de microhabitat de invertebrados bentônicos de um riacho de floresta urbana (Sudeste do Brasil). Este trabalho teve como objetivo avaliar a diversidade e o uso de microhabitat de invertebrados bentônicos em um riacho de floresta urbana na região do sudeste brasileiro. Os invertebrados foram coletados em um riacho de cabeceira, localizado na Floresta da Tijuca, Rio de Janeiro. Três tipos de microhabitats foram amostrados (folhiço, areia e pedra) usando um amostrador Surber. Os espécimes foram identificados em nível de família e curvas de rarefação foram construídas para a amostragem total e para cada tipo de microhabitat. Índices de estrutura de comunidade (abundância, riqueza taxonômica, diversidade e dominância) foram calculados para cada microhabitat. Diferenças entre os índices foram testados através de uma ANOVA de medidas repetidas, e diferenças entre a composição dos microhabitats através de uma PerMANOVA. Um total de 9,800 espécimes foram registrados em que Chironomidae foi mais abundante. As curvas de rarefação não atingiram a assíntota. Os índices de estrutura de comunidades apresentam diferenças (RM ANOVA; p < 0.001), bem como a composição dos microhabitats (PerMANOVA; p < 0.001). Abundância e riqueza taxonômica foram maiores em folhiço, diversidade foi maior em folhiço e pedra, e areia teve a maior dominância. Os resultados expostos destacaram que a variedade de microhabitats pode aumentar a diversidade local, e que as diferenças na disponibilidade de recursos de cada tipo de microhabitat determina a distribuição desses invertebrados.

ABSTRACT This work aimed to assess the diversity and microhabitat use of benthic invertebrates in an urban forest stream in southeastern Brazilian region. The invertebrates were sampled in a headwater stream, located at the Tijuca Forest, Rio de Janeiro. Three types of microhabitats were sampled (litter, sand and stone) using a Surber sampler. Specimens were identified to the family-level and rarefaction curves were constructed for the total sampling and for each type of microhabitat. Community structure indices (abundance, taxonomic richness, diversity, and dominance) were calculated for each microhabitat. Differences among indices were tested through a repeated measure ANOVA, and differences among microhabitatsʼ composition through a PerMANOVA. A total of 9,800 specimens were registered in which Chironomidae was the most abundant. The rarefaction curves did not reach the asymptote. Community structure indices exhibited differences (RM ANOVA; p < 0.001), as well as microhabitats’ composition (PerMANOVA; p < 0.001). Abundance and taxonomic richness were the highest in litter, diversity was higher both in litter and stone, and sand had the highest dominance. Results highlighted that the variety of microhabitats may enhance local diversity and that the differences in resources availability of each type of microhabitat determine the distribution of these invertebrates.

https://doi.org/10.1590/1678-4766e2021020 205 downloads

The Brazilian octocoral Phyllogorgia dilatata as a source of cytotoxic compounds
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FAGUNDES, THAYSSA S.F.

; MACEDO, ARTHUR L.

; RIGATO, DHIEGO B.

; AMARAL, BRUNO S. DO

; JIMENEZ, PAULA CHRISTINE

; COSTA-LOTUFO, LETÍCIA V.

; PEREIRA, RENATA F.A.

; AGUIAR-ALVES, FÁBIO

; SOARES, ANGÉLICA R.

; VASCONCELOS, THATYANA R.A.

; CASS, QUEZIA B.

; VALVERDE, ALESSANDRA L.

Anais da Academia Brasileira de Ciências

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2021, Volume 93 N. 4 elocation e20200686

Abstract: En | Text: En | PDF: En

Abstract The extensive marine biodiversity has proved to be a promising source of substances with biomedical potential. In this study, the cytotoxicity of the Brazilian octocoral Phyllogorgia dilatata (Gorgoniidae) was evaluated against two tumor cell lines and three bacterial strains. The methanol/dichloromethane crude extract presented no antibacterial activity up to the highest concentration tested (512 µg/mL), however it revealed a noteworthy antiproliferative effect against HCT-116 (80%) and MCF-7 (54%) cell lines at 50 μg/mL. Therefore, guided by the cytotoxic activity, a multistep chemical fractionation of the extract provided the subfraction 5 (PDPH2-5) with IC50 values of 3.18 and 17.80 μg/mL against HCT-116 and MCF-7, respectively. The LC-HRMS/MS analysis of PDPH2-5 showed ions of m/z 219.1742 and 219.1743, characterized as (E,E) and (Z,E) germacrone, after a LC-DAD-SPE/NMR analysis of the hexanic fraction and comparisons of NMR data with the literature. Previously reported assessments to the cytotoxic activity of the (E,E)-diastereoisomer disclosed higher IC50 values than that obtained for the PDPH2-5 fraction, suggesting, herein, a potentiated effect of the diastereoisomeric mixture. Such remark encourage further bioactivity studies with stereoisomer mixtures and reduce the urge for compound isolation.

https://doi.org/10.1590/0001-3765202120200686 65 downloads

Theoretical study of solvent effects on the hyperpolarizabilities of two chalcone derivatives
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Soares, João Victor B.

; Valverde, Clodoaldo

; Silva, André D. da

; Luz, Bruno V.

; dos Santos, Daniel Junior A.

; Carvalho, Elisa G. B.

; Oliveira, Yara Cecilia M.

; Napolitano, Hamilton B.

; Baseia, Basilio

; Osório, Francisco A. P.

Revista Colombiana de Química

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apr 2020, Volume 49 N. 1 Pages 33 - 39

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

Resumen El uso de materiales orgánicos como materiales ópticos no lineales se ha explorado intensamente en los últimos años, debido a la facilidad de manipulación de estas estructuras moleculares y la flexibilidad de síntesis en relación con el cambio de grupos sustituyentes. En el presente trabajo, las propiedades lineales y no lineales de dos derivados de chalcona (E)-1-(4-metilfenil)-3-fenilprop-2-en-1-ona (4MP3P) y (E)-1-(4-nitrofenil)-3-fenilprop-2-en-1-ona (4NP3P), los cuales difieren en la posición del sustituyente en el anillo de fenilo, se estudiaron en presencia de disolventes próticos y apróticos simulados por el Modelo Continuo Polarizable a nivel DFT/B3LYP/6-311+G(d). Además, se estudiaron parámetros moleculares estáticos y dinámicos (1064 nm) como el momento dipolar, la polarización lineal y la primera y la segunda hiperpolarización en función del valor constante dieléctrico del disolvente. El comportamiento geométrico se estudió como ángulos de enlace químico, ángulos de torsión y distribución de carga parcial de compuestos, incluidos los cálculos de energía de huecos en varios solventes. Los resultados mostraron que el cambio del sustituyente CH3 (4MP3P) a NO2 (4NP3P) beneficia las propiedades ópticas no lineales de los compuestos en presencia del medio solvente, los valores absolutos de la primera hiperpolarizabilidad paralela fueron los que presentaron la mayor variación.

Abstract The use of organic as nonlinear optical materials has been intensively explored in the recent years due to the ease of manipulation of the molecular structure and the synthetic flexibility regarding the change of substituent groups. In the present work, the linear and nonlinear properties of two chalcones derivatives (E)-1-(4-methylphenyl)-3-phenylprop-2-en-1-one (4MP3P) and (E)-1-(4-Nitrophenyl)-3-phenylprop-2-en-1-one (4NP3P), that differ by the substituent position at the phenyl ring, were studied in the presence of protic and aprotic solvents simulated by the Polarizable Continuum Model (PCM) at DFT/B3LYP/6-311+G(d) level. The static and dynamic (1064 nm) molecular parameters as the dipole moment, linear polarizability, first and second hyperpolarizabilities were studied as function of the solvent dielectric constant value. The geometrical behavior as the chemical bond angles, torsion angles, and partial charges distribution of the compounds were studied, including calculations of gap energies in various solvents. The obtained results revealed that the substituent change of CH3 (4MP3P) to NO2 (4NP3P) benefits the nonlinear optical properties of the compounds in the presence of the solvent media, the absolute values of the parallel first hyperpolarizability were the ones that present the greater variation.

Resumo O uso de materiais orgânicos como materiais ópticos não lineares tem sido intensamente explorado nos últimos anos, devido à facilidade de manipulação dessas estruturas moleculares e à flexibilidade de síntese em relação à mudança de grupos substituintes. No presente trabalho, as propriedades lineares e não lineares de dois derivados de chalconas (E)-1-(4-metilfenil)-3-fenilprop-2-en-1-ona (4MP3P) e (E)-1-(4-nitrofenil)-3-fenilprop-2-en-1-ona (4NP3P), que diferem pela posição do substituinte no anel fenil, foram estudados na presença de solventes próticos e apróticos simulados pelo Modelo Continuo Polarizável (PCM) no nível DFT/B3LYP/6-311+G(d). Os parâmetros moleculares estáticos e dinâmicos (1064 nm) como momento dipolar, polarizabilidade linear, primeira e segunda hiperpolarizabilidades foram estudados em função do valor da constante dielétrica do solvente. Estudou-se o comportamento geométrico como ângulos de ligação química, ângulos de torção e distribuição parcial de cargas dos compostos, incluindo cálculos de energias de gap em vários solventes. Os resultados obtidos revelaram que a mudança do substituinte de CH3 (4MP3P) para NO2 (4NP3P) beneficia as propriedades ópticas não lineares dos compostos na presença do meio solvente, os valores absolutos da primeira hiperpolarizabilidade paralela foram os que apresentaram a maior variação.

https://doi.org/10.15446/rev.colomb.quim.v1n49.82156 401 downloads

Bartonella henselae infection induces a persistent mechanical hypersensitivity in mice
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Vieira-Damiani, Gislaine

; Almeida, Amanda Roberta de

; Silva, Marilene Neves

; Lania, Bruno Groseli

; Soares, Tânia Cristina Benetti

; Drummond, Marina Rovani

; Lins, Karina A.

; Ericson, Marna

; Gupta, Kalpna

; Velho, Paulo Eduardo Neves Ferreira

Revista do Instituto de Medicina Tropical de São Paulo

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2020, Volume 62 elocation e79

Abstract: En | Text: En | PDF: En

ABSTRACT Bartonella spp. are re-emerging and neglected bacterial pathogens. The natural reservoirs for several species of this genus are domestic animals such as cats and dogs, the most common pets in the USA and Brazil. Some cat studies suggest that the infection is more prevalent in tropical and poverty-stricken areas. These bacteria were associated with a wide spectrum of clinical manifestations: fever of unknown origin, endocarditis, angiomatosis, chronic lymphadenopathy, hepatitis, fatigue, paresthesia and pain. Our group has already demonstrated that B. henselae -infected sickle cell disease mice present with hyperalgesia. We hypothesized that even immunocompetent mice infected by B. henselae would show an increased and persistent mechanical sensitivity. Five ten-week old male BALB/c mice were intraperitoneally inoculated with a 30 µL of suspension containing 10 4 CFU/mL of B. henselae, while five others were inoculated with an equal volume of saline solution. Four days after bacterial inoculation, the mechanical paw withdrawal threshold was measured using von Frey filaments in all animals, for five consecutive days. The infected animals showed hypersensitivity to mechanical stimuli for five consecutive days. The present study has demonstrated that B. henselae infection induces persistent mechanical hypersensitivity, a signal consistent with pain.

https://doi.org/10.1590/s1678-9946202062079 340 downloads

Cross-Sectional Study to Assess Endoscopic Ultrasound Practice in Portugal
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Costa, Juliana M.

; Fernandes, Dália

; Gonçalves, Bruno

; Gonçalves, Raquel

; Soares, João B.

GE-Portuguese Journal of Gastroenterology

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oct 2019, Volume 26 N. 5 Pages 333 - 345

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

Introdução: Apesar do crescente número de serviços nacionais a realizar ecoendoscopia digestiva, não existem dados sobre a prática da ecoendoscopia no nosso país. Objetivos: Pretendemos avaliar a prática da ecoendoscopia em Portugal. Métodos: Por e-mail convidámos um elemento de cada dos 26 serviços nacionais de Gastrenterologia que realizam ecoendoscopia a preencher um questionário disponível na plataforma google forms. O questionário esteve disponível via online de setembro de 2017 a fevereiro de 2018 e foi respondido apenas por médicos que realizam ecoendoscopia. Resultados: Obtivemos resposta de 21 dos 26 serviços convidados (80.8%). Em Portugal existe um total de 42 ecoendoscópios. A maioria das unidades possui 1 ecógrafo (81%), 1 ecoendoscópio radial (66.7%), 1 eco endoscópio linear (76.2%), 1 sonda rectal (57.1%) mas não dispõem de mini-sondas (85.7%). 81% dispõem de agulhas de aquisição de core histológico. Em 81% dos serviços existem pelo menos 2 ecoendoscopistas que realizam ecoendoscopia em conjunto em 47.6% dos serviços. Os ecoendoscopistas também realizam ecografia abdominal, ecografia anal e colangiopancreatografia retrógrada endoscópica em 71.4, 66.7 e 42.9% respectivamente. Os serviços têm em média 2.4 ± 1.1 períodos de ecoendoscopia/semana realizando em média 4 ± 1.5 ecoendoscopia/período (499.2 ± 416.8 ecoendoscopias/ano). A avaliação de lesões subepiteliais e bilio-pancreática, assim como o estadiamento de neoplasias do tubo digestivo são as indicações mais frequentes para a realização de ecoendoscopia. O número de punções diagnósticas guiadas por ecoendoscopia varia entre 10 e 160/ano. A maioria dos serviços (60%) dispõe de rapid on-site pathological evaluation (ROSE) que é realizada pelo citopatologista na maioria das vezes (66.7%). A carência de funcionários nas unidades de Anatomia Patológica é o principal motivo para a ausência de ROSE. A preparação do material citopatológico é realizada pelo ecoendoscopista em 25% dos serviços. A secagem ao ar (50%) e o formol (50%) são o método de fixação dos esfregaços e o meio de preservação mais usados, respetivamente. A drenagem de pseudocisto pancreático (66.7%), neurólise do plexo celíaco (52.4%) e necrosectomia pancreática (42.9%) são os procedimentos terapêuticos mais disseminados. Conclusões: Este trabalho fornece os primeiros dados sobre a prática de ecoendoscopia digestiva em Portugal. Existe uma grande variabilidade nos exames diagnósticos e terapêuticos.

Background: Despite the increasing number of national departments performing endoscopic ultrasound (EUS), there are no official data regarding clinical EUS practice in Portugal. Objectives: We aimed to evaluate the current practice of EUS in Portugal. Methods: By email, we invited 1 physician of each one of the 26 national Gastroenterology Departments which perform EUS to complete a survey questionnaire available on the Google Forms platform. The online questionnaire was available from September 2017 until February 2018 and was answered only by physicians who perform EUS. Results: A total of 21/26 (80.8%) national Gastroenterology Departments answered the questionnaire. In Portugal, there are 42 echoendoscopes in total; most of the echoendoscopy units have only 1 EUS processor (81%), 1 radial echoendoscope (66.7%), 1 linear echoendoscope (76.2%), 1 anorectal probe (57.1%), but no miniprobes (85.7%). About 81% have histological core acquisition needles. In 81% of the units, there are at least 2 ultrasonographers who perform echoendoscopy together (at least 2 ultrasonographers per EUS) in 47.6% of these departments. The ultrasonographers also performed abdominal ultrasound (US), anal US, and endoscopic retrograde cholangiopancreatography in 71.4, 66.7, and 42.9%, respectively. The echoendoscopy units have 2.4 ± 1.1 periods of echoendoscopy per week and 4 ± 1.5 EUS per period (499.2 ± 416.8 EUS per year). Subepithelial lesions and biliopancreatic lesion evaluation as well as gastrointestinal neoplasia staging were the most common EUS indications. The number of FNA (fineneedle aspirations) ranges from 10 to 160/year. Rapid on-site evaluation (ROSE) is available in 60% of units and is performed by the cytopathologist (66.7%) in the majority of cases. The main reason for omitting ROSE is the limited pathology staff. Cytopathological material is prepared by the ultrasonographer in 25% of the units. Air drying (50%) and formalin (50%) are most frequently used to fix and preserve smears, respectively. Pancreatic pseudocyst drainage (66.7%), celiac plexus neurolysis (52.4%) and pancreatic necrosectomy (42.9%) are the most widespread therapeutic procedures. Conclusions: This survey provides the first insight into the current status of digestive echoendoscopy in Portugal. There is a great variability in diagnostic and therapeutic echoendoscopy practice.

https://doi.org/10.1159/000495524 423 downloads

10.

Acute effects of ayahuasca in a juvenile non-human primate model of depression
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da Silva, Flávia S.

; Silva, Erick A.S.

; Sousa Jr., Geovan M. de

; Maia-de-Oliveira, João P.

; Soares-Rachetti, Vanessa de Paula

; de Araujo, Draulio B.

; Sousa, Maria B.C.

; Lobão-Soares, Bruno

; Hallak, Jaime

; Galvão-Coelho, Nicole L.

Brazilian Journal of Psychiatry

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aug 2019, Volume 41 N. 4 Pages 280 - 288

Abstract: En | Text: En | PDF: En

Objective: The incidence rate of major depression in adolescents reaches approximately 14%. This disorder is usually recurrent, without remission of symptoms even after pharmacological treatment, and persists throughout adult life. Since the effects of antidepressants take approximately 2 weeks to begin, new pharmacological therapies are under continuous exploration. Recent evidence suggests that psychedelics could produce rapid antidepressant effects. In this study, we evaluated the potential antidepressant effects of ayahuasca in a juvenile non-human primate model of depression. Methods: While living with their families, juvenile marmosets (8 males; 7 females) were observed on alternate days for four weeks during a baseline phase. This was followed by 8 weeks of an induced depressive state protocol, the social isolated context (IC), in which the animals were monitored in the first and last weeks. Subsequently, five males and four females were randomly selected for treatment, first with a single administration of saline vehicle (1.67 mL/300 g of body weight, via gavage), followed by a single dose of ayahuasca (1.67 mL/300 g of body weight, via gavage). Both phases lasted 1 week and the animals were monitored daily. A third week of sampling was called the tardive-pharmacological effects phase. In all phases the marmosets were assessed for behavior, fecal cortisol levels, and body weight. Results: After IC, the animals presented typical hypocortisolemia, but cortisol recovered to baseline levels 24 h after an acute dose of ayahuasca; this recovery was not observed in vehicle-treated animals. Additionally, in males, ayahuasca, but not the vehicle, reduced scratching, a stereotypic behavior, and increased feeding. Ayahuasca treatment also improved body weight to baseline levels in both sexes. The ayahuasca-induced behavioral response had long-term effects (14 days). Thus, in this translational juvenile animal model of depression, ayahuasca presented beneficial effects. Conclusions: These results can contribute to the validation of ayahuasca as an antidepressant drug and encourage new studies on psychedelic drugs as a tool for treating mood disorders, including for adolescents with early-onset depression.

https://doi.org/10.1590/1516-4446-2018-0140 1646 downloads

11.

Is arbuscular mycorrhizal fungal species community affected by cotton growth management systems in the Brazilian Cerrado?
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NUNES, HELIAB B.

; GOTO, BRUNO T.

; COIMBRA, JOÃO LUIZ

; OLIVEIRA, JAMILE S.

; TAVARES, DÉRICA G.

; ROCHA, MARCELO S.

; SILVA, FABIANE L.

; SOARES, ANA CRISTINA F.

Anais da Academia Brasileira de Ciências

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2019, Volume 91 N. 4 elocation e20180695

Abstract: En | Text: En | PDF: En

Abstract: Conventional cotton production in western Bahia, Brazil, involves intensive use of agricultural inputs and mechanization, which may affect arbuscular mycorrhizal fungi (AMF). This work aimed at studying the impact of conventional and organic cotton production in the AMF of western Bahia. Soil samples were obtained from conventional white cotton and colored cotton organic production systems as well as from native Cerrado areas, close to the white cotton fields, and from the subcaducifolia vegetation, close to the organic colored cotton farms. The most frequent species in the conventional farming areas belonged to the genera Acaulospora (10 spp.); Glomus (8 spp.); Dentiscutata (3 spp.); Ambispora, Pacispora and Scutellospora (2 spp. each), as well as Claroideoglomus etunicatum, Diversispora sp., Entrophospora infrequens, Gigaspora sp., Orbispora pernambucana, Paradentiscutata maritima, and Paraglomus occultum. Eighteen species were found in the organic farming areas, with the predominance of Glomus (5 spp.) and Acaulospora (5 spp.), and with Claroideoglomus, Dentiscutata, Gigaspora, Corymbiglomus, Orbispora, Paraglomus, Scutellospora, and Simiglomus (1 spp. each). Paraglomus bolivianum was first reported in Cerrado. In the native vegetation, nine species were found, with the predominance of Glomus and Acaulospora. The highest number of AMF species was found in the organic farming areas, which deserves further investigation.

https://doi.org/10.1590/0001-3765201920180695 657 downloads

12.

Mortality and Survival in Aortic Arch Surgeries with Preservation of Supra-aortic Vessels: Thirteen Years of Experience
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Oliveira, Paula Ferraz de

; Almeida Junior, Gustavo Luiz Gouvêa de

; Silva, Fabrício Braga da

; Sá, Mauro Paes Leme de

; Carreira, Valdo José

; Rangel, Bruno Soares da Silva

; Silva, Sicilia Pacheco e

International Journal of Cardiovascular Sciences

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oct 2018, Volume 31 N. 5 Pages 466 - 482

Abstract: En | Text: En | PDF: En

Abstract Background: The aortic arch diseases exhibit high morbidity and mortality rates. Some surgical strategies recommend partial preservation of the aortic arch and the supra-aortic vessels, but the immediate and medium-term mortality rates of patients undergoing this surgical strategy is uncertain. Objectives: To compare overall mortality and mid- term survival curve of patients undergoing surgical strategy of partial preservation of the aortic arch and supra-aortic vessels (group A) compared to conventional strategies of the aortic arch approach (group B); to assess cardiovascular mortality over time. Methods: Descriptive and retrospective study of the medical records of patients undergoing aortic arch repair surgery between February 2000 and July 2013. We analyzed 111 patients, 29 in group A and 82 in group B. The overall survival and survival from cardiovascular events were assessed by Kaplan-Meier test. Results: In- hospital mortality from any cause was 31% in group A and 29.3% in group B. At 1 year, 2 year, and 5 year general survival was similar between the groups. In-hospital, 2 years and 5 years mortality from cardiovascular causes was 13.8%, 14.8%, e 22.7% in group A and 26.8%, 34.6% e 50.9% in group B. The difference between the groups in 5 years showed statistical significance (p = 0.0234). Survival from cardiovascular causes in 2 years and 5 years was 85.2% and 77,3% in group A and 65.4% and 49,1% in group B. Occurrence of urgent and emergency procedures were greater in group A, but without statistical significance. Conclusions: There was no difference in all-cause mortality over time between the groups. Group A showed lower cardiovascular mortality at 5 years than group B. (Int J Cardiovasc Sci. 2018;31(5)466-482)

https://doi.org/10.5935/2359-4802.20180069 507 downloads

13.

The Presence and Extension of Myocardial Fibrosis in the Undetermined Form of Chagas’ Disease: A Study Using Magnetic Resonance
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Noya-Rabelo, Marcia Maria

; Macedo, Carolina The

; Larocca, Ticiana

; Machado, Admilson

; Pacheco, Thais

; Torreão, Jorge

; Souza, Bruno Solano de Freitas

; Soares, Milena B. P.

; Ribeiro-dos-Santos, Ricardo

; Correia, Luis Claudio Lemos

Arquivos Brasileiros de Cardiologia

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feb 2018, Volume 110 N. 2 Pages 124 - 131

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

Resumo Fundamento: Dados prévios têm demonstrado que pacientes na forma indeterminada podem apresentar fibrose miocárdica à ressonância magnética (RM). No entanto, são poucas as informações disponíveis quanto ao grau de fibrose miocárdica apresentada por esses indivíduos, o que guardaria relação com o potencial dessa variável na predição de evolução para a forma cardíaca da doença de Chagas. Objetivos: Descrever a frequência e extensão da fibrose miocárdica avaliada por RM em pacientes da forma indeterminada, comparando com as outras formas da doença. Métodos: Pacientes consecutivamente admitidos tiveram história clínica colhida e foram submetidos à realização de exames laboratoriais e RM. Resultados: Foram estudados 61 pacientes portadores da doença de Chagas, com média de idade de 58 ± 9 anos, sendo 17 pacientes na forma indeterminada, 16 na forma cardíaca sem disfunção do ventrículo esquerdo (VE) e 28 na forma com disfunção do VE. Foi considerado estatisticamente significante p < 0,05. Realce tardio foi detectado em 37 pacientes (64%). Foi identificada fibrose miocárdica em 6 indivíduos na forma indeterminada (41%; IC95% 23 - 66), proporção semelhante à observada na forma cardíaca sem disfunção do VE (44%); p = 1,0. Entre os indivíduos com fibrose, a área total do miocárdio acometida foi de 4,1% (IIQ: 2,1 - 10,7) na forma indeterminada versus 2,3% (IIQ: 1 - 5) na forma cardíaca sem disfunção do VE (p = 0,18). A fração de ejeção do ventrículo esquerdo nos indivíduos na forma indeterminada foi semelhante aos portadores da forma cardíaca sem disfunção ventricular (p = 0,09). Conclusão: A presença de fibrose na forma indeterminada da doença de Chagas tem frequência e extensão semelhante à forma cardíaca sem disfunção, o que sugere que a primeira faz parte de um espectro de doença subclínica, em vez da ausência de acometimento cardíaco.

Abstract Background: Previous data has shown that patients in the indeterminate form of Chagas disease may present myocardial fibrosis as shown on through magnetic resonance imaging (MRI). However, there is little information available regarding the degree of severity of myocardial fibrosis in these individuals. This variable has the potential to predict the evolution of Chagas’ disease into its cardiac form. Objectives: To describe the frequency and extent of myocardial fibrosis evaluated using an MRI in patients in the indeterminate form, and to compare it with other forms of the disease. Methods: Patients were admitted one after another. Their clinical history was collected and they were submitted to laboratory exams and an MRI. Results: Sixty-one patients with Chagas’ disease, with an average age of 58 ± 9 years old, 17 patients in the indeterminate form, 16 in the cardiac form without left ventricular (LV) dysfunction and 28 in the cardiac form with LV dysfunction were studied. P <0.05 was considered to be statistically significant. Late enhancement was detected in 37 patients (64%). Myocardial fibrosis was identified in 6 individuals in indeterminate form (41%; 95% CI 23-66) in a proportion similar to that observed in cardiac form without LV dysfunction (44%); p = 1.0. Among the individuals with fibrosis, the total area of the affected myocardium was 4.1% (IIQ: 2.1 - 10.7) in the indeterminate form versus 2.3% (IIQ: 1-5) in the cardiac form without LV (p = 0.18). The left ventricular fraction ejection in subjects in the indeterminate form was similar to that of the individuals in the cardiac form without ventricular dysfunction (p = 0.09). Conclusion: The presence of fibrosis in the indeterminate form of Chagas’ disease has a frequency and extension similar to that of in the cardiac form without dysfunction, suggesting that the former is part of a subclinical disease spectrum, rather than lacking cardiac involvement.

https://doi.org/10.5935/abc.20180016 1221 downloads

14.

ERICA: prevalences of hypertension and obesity in Brazilian adolescents
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Bloch, Katia Vergetti

; Klein, Carlos Henrique

; Szklo, Moyses

; Kuschnir, Maria Cristina C

; Abreu, Gabriela de Azevedo

; Barufaldi, Laura Augusta

; Veiga, Gloria Valeria da

; Schaan, Beatriz

; Silva, Thiago Luiz Nogueira da

; Moraes, Ana Julia Pantoja

; Oliveira, Ana Mayra Andrade de

; Tavares, Bruno Mendes

; Magliano, Erika da Silva

; Oliveira, Cecília Lacroix de

; Cunha, Cristiane de Freitas

; Giannini, Denise Tavares

; Belfort, Dilson Rodrigues

; Santos, Eduardo Lima

; Leon, Elisa Brosina de

; Oliveira, Elizabete Regina Araújo

; Fujimori, Elizabeth

; Borges, Ana Luíza

; Vasconcelos, Francisco de Assis Guedes

; Azevedo, George Dantas

; Brunken, Gisela Soares

; Guimarães, Isabel Cristina Britto

; Faria Neto, José Rocha

; Oliveira, Juliana Souza

; Carvalho, Kenia Mara B. de

; Gonçalves, Luis Gonzaga de Oliveira

; Monteiro, Maria Inês

; Santos, Marize M.

; Jardim, Paulo César B. Veiga

; Ferreira, Pedro Antônio Muniz

; Montenegro Jr., Renan Magalhães

; Gurgel, Ricardo Queiroz

; Vianna, Rodrigo Pinheiro

; Vasconcelos, Sandra Mary

; Goldberg, Tamara Beres Lederer

Revista de Saúde Pública

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2016, Volume 50 Suppl. 1 elocation 9s

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

RESUMO OBJETIVO Estimar as prevalências de hipertensão arterial e obesidade e a fração atribuível populacional de hipertensão arterial devida à obesidade em adolescentes brasileiros. MÉTODOS Foram avaliados dados dos participantes do Estudo de Riscos Cardiovasculares em Adolescentes, estudo seccional l nacional de base escolar. A amostra foi dividida em 32 estratos geográficos e conglomerados de escolas e turmas, com representatividade nacional, macrorregional e de capitais. Obesidade foi classificada pelo índice de massa corporal segundo idade e sexo. Considerou-se hipertensão arterial a média da pressão arterial sistólica ou diastólica maior ou igual ao percentil 95 da curva de referência. Foram estimadas prevalências e intervalos de confiança de 95% (IC95%) de hipertensão arterial e de obesidade, nacionais e nas macrorregiões do País, por sexo e grupo etário, assim como as frações de hipertensão atribuíveis à obesidade na população. RESULTADOS Foram avaliados 73.399 estudantes, 55,4% do sexo feminino, com média de idade 14,7 anos (DP = 1,6). A prevalência de hipertensão arterial foi 9,6% (IC95% 9,0-10,3); sendo as mais baixas observadas nas regiões Norte, 8,4% (IC95% 7,7-9,2) e Nordeste, 8,4% (IC95% 7,6-9,2) e a mais alta na região Sul, 12,5% (IC95% 11,0-14,2). A prevalência de obesidade foi 8,4% (IC95% 7,9-8,9), mais baixa na região Norte e mais alta na Sul. As prevalências de hipertensão arterial e obesidade foram maiores no sexo masculino. Adolescentes com obesidade tiveram prevalência de hipertensão arterial mais elevada, 28,4% (IC95% 25,5-31,2), do que aqueles com sobrepeso, 15,4% (IC95% 13,8-17,0), ou eutróficos, 6,3% (IC95% 5,6-7,0). A fração de hipertensão arterial atribuível à obesidade foi de 17,8%. CONCLUSÕES O ERICA foi o primeiro estudo brasileiro com representatividade nacional a estimar a prevalência de hipertensão arterial aferida em adolescentes. A fração da prevalência de hipertensão arterial atribuível à obesidade mostrou que cerca de 1/5 dos hipertensos poderiam não ser hipertensos se não fossem obesos.

ABSTRACT OBJECTIVE To estimate the prevalence of arterial hypertension and obesity and the population attributable fraction of hypertension that is due to obesity in Brazilian adolescents. METHODS Data from participants in the Brazilian Study of Cardiovascular Risks in Adolescents (ERICA), which was the first national school-based, cross-section study performed in Brazil were evaluated. The sample was divided into 32 geographical strata and clusters from 32 schools and classes, with regional and national representation. Obesity was classified using the body mass index according to age and sex. Arterial hypertension was defined when the average systolic or diastolic blood pressure was greater than or equal to the 95th percentile of the reference curve. Prevalences and 95% confidence intervals (95%CI) of arterial hypertension and obesity, both on a national basis and in the macro-regions of Brazil, were estimated by sex and age group, as were the fractions of hypertension attributable to obesity in the population. RESULTS We evaluated 73,399 students, 55.4% female, with an average age of 14.7 years (SD = 1.6). The prevalence of hypertension was 9.6% (95%CI 9.0-10.3); with the lowest being in the North, 8.4% (95%CI 7.7-9.2) and Northeast regions, 8.4% (95%CI 7.6-9.2), and the highest being in the South, 12.5% (95%CI 11.0-14.2). The prevalence of obesity was 8.4% (95%CI 7.9-8.9), which was lower in the North region and higher in the South region. The prevalences of arterial hypertension and obesity were higher in males. Obese adolescents presented a higher prevalence of hypertension, 28.4% (95%CI 25.5-31.2), than overweight adolescents, 15.4% (95%CI 17.0-13.8), or eutrophic adolescents, 6.3% (95%CI 5.6-7.0). The fraction of hypertension attributable to obesity was 17.8%. CONCLUSIONS ERICA was the first nationally representative Brazilian study providing prevalence estimates of hypertension in adolescents. Regional and sex differences were observed. The study indicates that the control of obesity would lower the prevalence of hypertension among Brazilian adolescents by 1/5.

https://doi.org/10.1590/s01518-8787.2016050006685 1511 downloads

15.

ERICA: prevalences of hypertension and obesity in Brazilian adolescents
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Bloch, Katia Vergetti

; Klein, Carlos Henrique

; Szklo, Moyses

; Kuschnir, Maria Cristina C

; Abreu, Gabriela de Azevedo

; Barufaldi, Laura Augusta

; Veiga, Gloria Valeria da

; Schaan, Beatriz

; Silva, Thiago Luiz Nogueira da

; Moraes, Ana Julia Pantoja

; Oliveira, Ana Mayra Andrade de

; Tavares, Bruno Mendes

; Magliano, Erika da Silva

; Oliveira, Cecília Lacroix de

; Cunha, Cristiane de Freitas

; Giannini, Denise Tavares

; Belfort, Dilson Rodrigues

; Santos, Eduardo Lima

; Leon, Elisa Brosina de

; Oliveira, Elizabete Regina Araújo

; Fujimori, Elizabeth

; Borges, Ana Luíza

; Vasconcelos, Francisco de Assis Guedes

; Azevedo, George Dantas

; Brunken, Gisela Soares

; Guimarães, Isabel Cristina Britto

; Faria Neto, José Rocha

; Oliveira, Juliana Souza

; Carvalho, Kenia Mara B. de

; Gonçalves, Luis Gonzaga de Oliveira

; Monteiro, Maria Inês

; Santos, Marize M.

; Jardim, Paulo César B. Veiga

; Ferreira, Pedro Antônio Muniz

; Montenegro Jr., Renan Magalhães

; Gurgel, Ricardo Queiroz

; Vianna, Rodrigo Pinheiro

; Vasconcelos, Sandra Mary

; Goldberg, Tamara Beres Lederer

Revista de Saúde Pública

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2016, Volume 50 Suppl. 1 elocation 9s

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

https://doi.org/10.1590/s01518-8787.2016050006685 18629 downloads

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