Search | SciELO

ABSTRACT Objective: To report outcomes from the largest multicenter series of penile cancer patients undergoing video endoscopic inguinal lymphadenectomy (VEIL). Materials and Methods: Retrospective multicenter analysis. Authors of 21 centers from the Penile Cancer Collaborative Coalition-Latin America (PeC-LA) were included. All centers performed the procedure following the same previously described standardized technique. Inclusion criteria included penile cancer patients with no palpable lymph nodes and intermediate/high-risk disease and those with non-fixed palpable lymph nodes less than 4 cm in diameter. Categorical variables are shown as percentages and frequencies whereas continuous variables as mean and range. Results: From 2006 to 2020, 210 VEIL procedures were performed in 105 patients. Mean age was 58 (45-68) years old. Mean operative time was 90 minutes (60-120). Mean lymph node yield was 10 nodes (6-16). Complication rate was 15.7%, including severe complications in 1.9% of procedures. Lymphatic and skin complications were noted in 8.6 and 4.8% of patients, respectively. Histopathological analysis revealed lymph node involvement in 26.7% of patients with non-palpable nodes. Inguinal recurrence was observed in 2.8% of patients. 10y- overall survival was 74.2% and 10-y cancer specific survival was 84.8%. CSS for pN0, pN1, pN2 and pN3 were 100%, 82.4%, 72.7% and 9.1%, respectively. Conclusion: VEIL seems to offer appropriate long term oncological control with minimal morbidity. In the absence of non-invasive stratification measures such as dynamic sentinel node biopsy, VEIL emerged as the alternative for the management of non-bulky lymph nodes in penile cancer.

https://doi.org/10.1590/s1677-5538.ibju.2023.0065

Fitting Structure-Data Files (.SDF) Libraries to Progenesis QI Identification Searches
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Sanches, Pedro H. G.

; Oliveira, Danilo C. de

; Reis, Ivan G. M. dos

; Fernandes, Anna M. A. P.

; Silva, Alex A. R.

; Eberlin, Marcos N.

; Carvalho, Patrícia O.

; Duarte, Gustavo H. B.

; Porcari, Andreia M.

Journal of the Brazilian Chemical Society

Journal Metrics
- Sobre o periódico
- SciELO Analytics

jul 2023, Volume 34 N. 7 Pages 1013 - 1019

Abstract: En | Text: En | PDF: En

Progenesis QI (PQI) is a multiplatform bioinformatics tool that facilitates the identification workflow for metabolomics experiments. PQI uses fragmentation data provided by MassBank of North America (MoNA) libraries, among others, for metabolite annotation. However, PQI does not officially support MoNA libraries and other libraries based on structure-data files (.sdf). This paper describes the development and application of a software named MoNA to Progenesis QI Library Converter, allowing PQI and MoNA by correcting the fragmentation data of the library for Progenesis readability. We evaluated several public experimental datasets, including human plasma, plant extracts, cultured cells, bacteria, rat serum, and rat hippocampus. The results showed that it is mandatory to proceed with file conversion of each library to allow PQI to access fragmentation information from .msp (main spectra profile) files. This step is highly recommended to improve the identification level of the metabolites.

https://doi.org/10.21577/0103-5053.20230016

Toll-like receptor 9 polymorphisms in brazilian patients with systemic lupus erythematosus: a pilot study
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Barbosa, L. M.

; Santiago, M. B.

; Moretto, V. T.

; Athanazio, D.

; Takahashi, D.

; Reis, E. G.

; Lopes, M.

; Lemaire, D.

; Reis, M. G.

Brazilian Journal of Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 83 elocation e244123

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

Resumo O receptor Toll-like 9 (TLR9) é um componente importante do sistema imunológico inato e tem sido associado a várias doenças autoimunes, como o Lúpus Eritematoso Sistêmico (LES). O objetivo deste estudo foi investigar polimorfismos no gene TLR9 em um grupo de pacientes brasileiros com LES e sua associação com a manifestação clínica, particularmente a artropatia de Jaccoud (JA). Foram analisadas amostras de DNA de 204 pacientes com LES, e um subgrupo com JA (n=24). Um grupo de controle (n=133) da mesma cidade também foi incluído. Os polimorfismos de nucleotídeos únicos TLR9 (SNPs) (−1237 C>T e +2848 G>A) foram identificados pela análise de sequenciamento. A frequência do genótipo genético TLR9 foi semelhante tanto em pacientes com LES quanto no grupo controle. Em toda a população de LES, foi encontrada associação entre a homozigose do alelo C na posição −1237 com psicose e anemia (p < 0,01). Da mesma forma, a homozigose do alelo G na posição +2848 foi associada a uma erupção cutânea discoide (p < 0,05). Não houve associação entre polimorfismos JA e TLR9. Esses dados mostram que os polimorfismos TLR9 não parecem ser um fator predisponível para o LES na população brasileira, e que os SNPs não estão associados ao JA.

Abstract Toll-like receptor 9 (TLR9) is an important component of the innate immune system and have been associated with several autoimmune diseases, such as Systemic Lupus Erythematosus (SLE). The aim of this study was to investigate polymorphisms in TLR9 gene in a Brazilian SLE patients group and their association with clinical manifestation, particularly Jaccoud’s arthropathy (JA). We analyzed DNA samples from 204 SLE patients, having a subgroup of them presenting JA (n=24). A control group (n=133) from the same city was also included. TLR9 single nucleotide polymorphisms (SNPs) (−1237 C>T and +2848 G>A) were identified by sequencing analysis. The TLR9 gene genotype frequency was similar both in SLE patients and the control group. In the whole SLE population, an association between the homozygosis of allele C at position −1237 with psychosis and anemia (p < 0.01) was found. Likewise, the homozygosis of allele G at position +2848 was associated with a discoid rash (p < 0.05). There was no association between JA and TLR9 polymorphisms. These data show that TLR9 polymorphisms do not seem to be a predisposing factor for SLE in the Brazilian population, and that SNPs are not associated with JA.

https://doi.org/10.1590/1519-6984.244123 502 downloads

Development and psychometric properties of the Cognitive Distortions Questionnaire for Adolescents (CD-Quest-T)
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

de Souza, Claudia Luísa Sena Gomes

; Pires, Pedro Paulo

; Couto, Isabela S. L.

; de Vasconcelos, Nina S. S. M.

; Menezes, Igor G.

; de Oliveira, Irismar Reis

Trends in Psychiatry and Psychotherapy

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 45 elocation e20210214

Abstract: En | Text: En | PDF: En

Abstract Introduction The Cognitive Distortions Questionnaire (CD-Quest) is an instrument that identifies logical errors or cognitive distortions and is used in trial-based cognitive therapy (TBCT). However, it had previously only been available for adults. Objectives To develop and validate a version of the CD-Quest for teens (CD-Quest-T) aged 11 to 17 years and test its psychometric properties. Method A total of 299 schoolchildren participated in the investigation. After content validity was assessed, the language was adapted for the target age group, and the length of the instrument was reduced to eight items (from the initial 15). Five cognitive therapists analyzed the content and structure of the items. Finally, to investigate the construct validity of the CD-Quest-T, the instrument was divided into a full scale and two subscales, which measure the frequency of the distortions and the intensity attributed to them, respectively. Results The overall internal consistency of the scale was α = 0.77, whereas subscale indices were α = 0.75 for the frequency scale and α = 0.73 for the intensity scale. Results from exploratory factor analysis and concurrent validity analysis indicated that the CD-Quest-T items have good psychometric properties and generate scores reliably. Conclusion The psychometric properties of the CD-Quest-T demonstrate its adequacy for measurement of cognitive distortions in adolescents.

https://doi.org/10.47626/2237-6089-2021-0214

COMPARANDO A EFICIÊNCIA ANALÍTICA DAS TÉCNICAS FTIR, UV-VIS, CLAE-DAD E ESI(+)MS NO ESTUDO DE CORANTES ALIMENTARES
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Lyrio, Marcos V. V.

; Debona, Danieli G.

; Conceição, Nathália dos S.

; Gomes, Francisco M.

; Pereira, Alan R.

; Frizzera, Henrique A.

; Reis, Jessica L.

; Grecco, Taila T.

; Pires, Bruna C.

; Lacerda Jr., Valdemar

; Castro, Eustaquio V. R.

; Isidoro, Marsele M.

; Filgueiras, Paulo R.

; Romão, Wanderson

Química Nova

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 46 N. 5 Pages 435 - 449

Abstract: Pt | Text: Pt | PDF: Pt

Food additives are chemical substances added to improve organoleptic characteristics, in this context, there are several synthetic dyes, such as sunset yellow, tartrazine, erioglaucine, allura red, indigo carmine, and new coccine, that can also be identified through different analytical techniques such as infrared spectroscopy, UV-Vis spectrophotometry, high performance liquid chromatography with diode array detector and mass spectrometry. Therefore, the objective of this work was to compare methods developed for different analytical techniques, in order to identify the one that presents greater efficiency in certain applications. For this, the patterns of the dyes were analyzed, as well as their mixtures and foods that had them. As a result, the CLAE-DAD presents excellent selectivity and linearity of the calibration curves, but it presents higher LD and LQ values when compared to the UV-Vis, in turn the infrared provides information regarding functional groups and bonds. Mass spectrometry showed great capabilities in identifying the molecular formula and better selectivity in the absence of the erioglaucine dye. It is not feasible to indicate the best or worst analytical approach, but it is possible to point out which one is more suitable for each application. Regarding the quantification capacity, chromatography and UV-Vis are good alternatives, but in mixtures containing more than one dye, CLAE-DAD is more suitable due to the better selectivity. Regarding the identification capacity, mass spectrometry, especially FT-ICR MS, is the most appropriate technique to propose molecular formulas due to its high resolution and mass accuracy. The advantage of FTIR was the easier sample preparation, being able to analyze the dyes in the solid state.

https://doi.org/10.21577/0100-4042.20230037

A food interaction network between psittacines and plants in an urban area in the city of São Carlos – SP, southeastern Brazil
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Leoni, A. M.

; Reis, M. G.

; Dias Filho, M. M.

Brazilian Journal of Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 83 elocation e269353

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

Abstract The Psittacidae presents a great diversity of species in the Neotropical region performing fundamental ecological functions for ecosystems. These frugivorous birds can occupy different positions in the antagonistic-mutualistic gradient of food interactions, acting as predators and/or as seed dispersers. Little is known about bird-plant ecological interaction networks focusing on psittacines in urban environments, which may compromise the management of natural areas in anthropic landscapes and hinder the planning of conservation strategies. In this context, the present study aimed to analyze the network of feeding interactions between psittacines and plants that occur in green areas in urban and periurban areas of the municipality of São Carlos, São Paulo State, southeastern Brazil. Starting with an active searching added to the application of the focal animal sampling at 36 systematized sampling points during the years 2019, 2020 and 2021, the plant species consumed by parrots in the study area were observed. Four species of birds of the Psittacidae family were recorded consuming food resources from 46 plant species. The order of relevance of the birds in structuring the ecological network was: Brotogeris chiriri (Vieillot, 1851), Psittacara leucophthalmus (Statius Muller, 1872), Forpus xanthopterygius (Spix, 1843) and Eupsittula aurea (Gmelin, 1788). The most consumed plants were Syagrus romanzoffiana, Salix babylonica, Caesalpinea pluviosa, Mangifera indica and Handroanthus heptaphyllus. The pattern of consumption by birds was significantly different among species, and overall, they had a broad diet and medium niche overlap. Network nesting was low, as was connectance, i.e., the number of interactions or connections observed between pairs of species was considerably less than the total number possible. Network asymmetry was considerably high, with the psittacine group performing interactions with a large number of plant species, while each plant received on average few psittacine species. The results point to a high plasticity in the use of food resources in anthropic landscapes, indicating that the occupation of the urban environment by psittacines has been occurring successfully and may benefit the populations of the species recorded here.

Resumo A família Psittacidae apresenta grande diversidade de espécies na região Neotropical, as quais desempenham funções ecológicas fundamentais para os ecossistemas. Essas aves frugívoras podem ocupar diferentes posições no gradiente antagonista-mutualista de interações alimentares, atuando como predadoras e/ou como dispersoras de sementes. Pouco se sabe sobre redes de interações ecológicas ave-planta com foco nos psitacídeos em ambientes urbanos, o que pode comprometer a gestão de áreas naturais em paisagens antrópicas e dificultar o planejamento de estratégias de conservação. Nesse contexto, o presente estudo objetivou analisar a rede de interações alimentares entre psitacídeos e plantas que ocorrem em áreas verdes da zona urbana e periurbana do município de São Carlos, estado de São Paulo, sudeste do Brasil. A partir de busca ativa somada à aplicação do método animal-focal em 36 pontos de amostragem sistematizada de 2019 a 2021, foram observadas as espécies de plantas consumidas por psitacídeos na área de estudo. Foram registradas 4 espécies de Psittacidae consumindo recursos alimentares de 46 espécies de plantas. A ordem de relevância das aves na estruturação da rede ecológica foi: Brotogeris chiriri (Vieillot, 1851), Psittacara leucophthalmus (Statius Muller, 1872), Forpus xanthopterygius (Spix, 1843) e Eupsittula aurea (Gmelin, 1788). As plantas mais consumidas foram Syagrus romanzoffiana, Salix babylonica, Caesalpinea pluviosa, Mangifera indica e Handroanthus heptaphyllus. O padrão de consumo pelas aves foi significativamente distinto entre as espécies, sendo que no geral apresentaram uma dieta ampla e sobreposição de nicho mediana. O aninhamento da rede foi baixo, assim como conectância, ou seja, o número de interações ou conexões observadas entre pares de espécies foi consideravelmente menor do que o número total possível. A assimetria da rede foi consideravelmente alta, com o grupo dos psitacídeos realizando interações com um grande número de espécies de plantas, ao passo que cada planta recebeu em média poucas espécies de psitacídeos. Os resultados apontam para uma alta plasticidade no uso de recursos alimentares em paisagens antrópicas, indicando que a ocupação do ambiente urbano por psitacídeos vem ocorrendo com sucesso e pode beneficiar as populações das espécies aqui registradas.

https://doi.org/10.1590/1519-6984.269353

Effects of previous infestation with Bemisia tabaci MEAM1 on the resistance to Chrysodeixis includens in Bt and non-Bt soybean plants
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Costa, E. N.

; Fernandes, M. G.

; Reis, L. C.

; Foresti, A. C.

; Martins, L. O.

; Scalon, S. P. Q.

Brazilian Journal of Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 83 elocation e277899

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

Abstract Transgenic Bt soybean plants have been developed to control insect pests, such as Anticarsia gemmatalis and Chrysodeixis includens. This objective has been achieved successfully; however, recently, some authors claimed that Bt soybean plants have been more susceptible than non-Bt soybean to Bemisia tabaci MEAM1. In addition, it is unknown whether Bt soybean plants infested by B. tabaci become less resistant to target pests. Therefore, this study aimed to evaluate: (i) whether the previous infestation with B. tabaci can compromise Bt and non-Bt soybean resistance to C. includens; (ii) the effects of B. tabaci infestations on Bt and non-Bt soybean plant growth; and (iii) whether B. tabaci feeding reduces contents of chlorophyll and carotenoids of soybean plants. Bt and non-Bt soybean plants pre-infested with B. tabaci showed no changes in resistance to C. includens. Bt soybean plants infested with B. tabaci showed a lower plant height than uninfested plants. Differently, non-Bt soybean plants exhibited no reduction in plant growth due to B. tabaci feeding. Bt soybean plants suffered a reduction in dry matter only under double infestation (B. tabaci and C. includens), while non-Bt soybean plants experienced reduction in dry matter when infested with B. tabaci and C. includens or by C. includens only. B. tabaci feeding did not alter contents of chlorophyll and carotenoids, and perhaps the reduction in plant growth was related to salivary toxins. Concluding, both Bt and non-Bt soybean plants were susceptible to B. tabaci feeding, evidencing necessity of developing soybean cultivars resistant to B. tabaci.

Resumo A soja Bt (transgênica) foi desenvolvida para controlar insetos-praga como Anticarsia gemmatalis e Chrysodeixis includens. Este objetivo foi alcançado com sucesso; no entanto, recentemente, alguns autores afirmaram que as plantas de soja Bt têm sido mais suscetíveis do que a soja não-Bt a Bemisia tabaci MEAM1. Além disso, não se sabe se plantas de soja Bt infestadas por B. tabaci tornam-se menos resistentes às pragas-alvo. Portanto, este estudo teve como objetivo avaliar: (i) se a infestação prévia de B. tabaci pode comprometer a resistência da soja Bt e não Bt a C. includens; (ii) os efeitos de infestações de B. tabaci no crescimento de plantas de soja Bt e não Bt; e (iii) se a alimentação de B. tabaci reduz os teores de clorofila e carotenoides das plantas de soja. Plantas de soja Bt e não Bt pré-infestadas com B. tabaci não apresentaram alterações na resistência a C. includens. Plantas de soja Bt infestadas com B. tabaci apresentaram menor altura de planta do que plantas não infestadas. Diferentemente, as plantas de soja não-Bt não apresentaram redução no crescimento das plantas devido à alimentação de B. tabaci. Plantas de soja Bt sofreram redução de matéria seca apenas sob infestação dupla (B. tabaci e C. includens), enquanto plantas de soja não Bt apresentaram redução de matéria seca quando infestadas por B. tabaci e C. includens ou apenas por C. includens. A alimentação de B. tabaci não alterou os teores de clorofila e carotenoides, e talvez a redução no crescimento da planta esteja relacionada a toxinas salivares. Concluindo, tanto as plantas de soja Bt quanto as não-Bt foram suscetíveis à alimentação de B. tabaci, evidenciando a necessidade do desenvolvimento de cultivares de soja resistentes a B. tabaci.

https://doi.org/10.1590/1519-6984.277899

Impacts of the antartic ozone hole influence events over southern Brazil in October 2015
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

SOUZA, ALANNA M. DE

; PERES, LUCAS V.

; BITTENCOURT, GABRIELA D.

; PINHEIRO, DAMARIS K.

; LOPES, BIBIANA C.

; ANABOR, VAGNER

; LEME, NEUSA M.P.

; MARTINS, MARIA PAULETE P.

; SILVA, RODRIGO DA

; REIS, GABRIELA C.G. DOS

; REIS, MARCO ANTÔNIO G. DOS

; BAGESTON, JOSÉ V.

; BENCHERIF, HASSAN

Anais da Academia Brasileira de Ciências

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 95 Suppl. 3 elocation e20210528

Abstract: En | Text: En | PDF: En

Abstract The impact of the Antarctic Ozone Hole Influence over Southern Brazil in October 2015 was analyzed using daily mean data of the Total Column Ozone (TCO), Ultraviolet Index (UVI) and Radiative Cloud Fraction (RCF) from the Ozone Monitoring Instrument satellite instrument. Vertical profiles and fields of ozone content and Potential Vorticity available from the European Centre for Medium-Range Weather Forecast reanalysis, air masses backward trajectories from the HYbrid Single-Particle Lagrangian Integrated Trajectory model and channel 3 water vapor images from the Geostationary Operational Environmental Satellite GOES-13 were also analyzed. The five identified events showed an -7.4±2.3% average TCO reduction, leading to an +16.6±54.6% UVI increase even with a predominance of partly cloudy days. Other impacts were observed in the ozone profiles, where the most significant anomalies occurred from 650 K reaching 1.2 ppmv at the 850 K level. In the ozone fields at 700 K, the presence of a polar origin tongue was observed causing negatives anomalies between -0.2 and 0.4 ppmv in a transient system format forced with eastward-traveling Rossby waves passing through the Southern of Brazil and Uruguay.

https://doi.org/10.1590/0001-3765202320210528

Observando a influência da temperatura do ar na velocidade de propagação do som com auxílio de um telêmetro acústico
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Falcão Jr., Abdoral M.

; Faria, Bruno de S.

; Guedes, Edson G.

; Amorim, H.S. de

; Azeredo, Lara L.M.

; Reis, Luiz O.G. dos

; Cruz, Tamires R. da

; Guimarães, Waltercy B.

Revista Brasileira de Ensino de Física

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 45 elocation e20230189

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

Neste trabalho apresentamos uma experiência simples que procura mostrar a influência da temperatura do ar atmosférico sobre a velocidade de propagação do som. A experiência consiste na observação simultânea da temperatura do ar e da velocidade de propagação do som, usando as próprias variações diurnas de temperatura. O experimento se baseia num telêmetro acústico e faz uso de uma placa Arduino Uno com um escudo datalogger. som datalogger

In this work we present a simple experiment that seeks to show the influence of atmospheric air temperature on the speed of sound propagation. The experiment consists of the simultaneous observation of air temperature and the speed of propagation of sound, using diurnal temperature variations. The experiment is based on an acoustic range finder and makes use of an Arduino Uno board with a datalogger shield. variations shield

https://doi.org/10.1590/1806-9126-rbef-2023-0189

10.

Achados Ecocardiográficos Anormais em Pacientes Internados com Covid-19: Uma Revisão Sistemática e Metanálise
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Barberato, Silvio Henrique

; Bruneto, Eduardo G.

; Reis, Gabriel S.

; Oliveira, Paula Rauen Franco de

; Possamai, Alexandre F.

; Silvestre, Odilson

; Silva, Miguel M. Fernandes

Arquivos Brasileiros de Cardiologia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

aug 2022, Volume 119 N. 2 Pages 267 - 279

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

Resumo Fundamentos A doença do coronavírus 2019 (Covid-19) pode levar à insuficiência respiratória grave e lesão cardíaca aguda, mas não está claro com que frequência ela pode causar disfunção cardíaca. Objetivos Nesta revisão sistemática, nosso objetivo foi resumir os principais achados ecocardiográficos em pacientes com Covid-19. Métodos Conduzimos uma busca sistemática nos bancos de dados PUBMED, EMBASE, LILACS e Cochrane, além de artigos não pulicados ( preprints ) no MedRxiv e Scielo desde o início até 21 de julho de 2021. Foram incluídos estudos que apresentaram dados ecocardiográficos de pacientes com Covid-19. Características demográficas, doença cardiovascular (DCV) prévia, e achados ecocardiográficos foram extraídos dos estudos. Realizamos uma metanálise de proporções para estimar os principais achados ecocardiográficos. O nível de significância foi p<0,05. Resultados Do total de 11 233 estudos, 38 preencheram os critérios de inclusão e foram incluídos na metanálise. A proporção estimada de disfunção sistólica do ventrículo esquerdo (VE) foi 25% (IC95%: 19, 31; I2 93%), strain longitudinal global anormal 34% (IC95% 23, 45; I2 90%), disfunção sistólica do ventrículo direito (VD) 17% (IC95% 13, 21; I2 90%), derrame pericárdico 17% (IC95%: 9, 26; I2 97%), e hipertensão pulmonar 23% (IC95%: 15, 33, I2 96%). Disfunção sistólica do VE foi diretamente associada com prevalência de ecocardiograma anormal prévio nos estudos (p<0,001). A proporção de pacientes em ventilação mecânica, indicando gravidade da doença, não explicou a heterogeneidade nas proporções de disfunção do VE (p=0,37). Conclusão Entre os pacientes internados com Covid-19, a disfunção ventricular esquerda foi descrita em um quarto dos pacientes, com menores proporções de disfunção do ventrículo direito, derrame pericárdico e hipertensão pulmonar. No entanto, houve uma proporção mais alta de disfunção do VE nos estudos que relataram presença de doença cardíaca prévia, sugerindo que a disfunção cardíaca era predominantemente pré-existente.

Abstract Background Coronavirus disease 2019 (Covid-19) can lead to severe respiratory distress and acute cardiac injury, but it is unclear how often it can cause cardiac dysfunction. Objective In this systematic review, we aimed to summarize the main echocardiographic findings in patients with Covid-19. Methods We systematically searched in PUBMED, EMBASE, LILACS and Cochrane databases, in addition MedRxiv and Scielo preprints from inception to July 21st, 2021. Studies reporting echocardiographic data in patients with Covid-19 were included. Demographic characteristics, previous cardiovascular disease (CVD), and echocardiographic findings were extracted. We performed a meta-analysis of proportions to estimate the main echocardiographic findings. The level of significance was p < 0.05. Results From 11,233 studies, 38 fulfilled inclusion criteria and were included in the meta-analysis. The estimated proportions of left ventricular (LV) systolic dysfunction were 25% (95%CI: 19, 31; I293%), abnormal global longitudinal strain 34% (95% CI 23, 45; I290%), righ ventricular (RV) systolic dysfunction 17% (95%CI 13, 21; I290%), pericardial effusion 17% (95%CI: 9, 26; I297%), and pulmonary hypertension 23% (95%CI: 15, 33, I2 96%). LV systolic dysfunction was directly associated with study-specific prevalence of previous abnormal echocardiogram (p<0.001). The proportion of patients in mechanical ventilation, indicating severity of disease, did not explain the heterogeneity in the proportions of LV dysfunction (p=0.37). Conclusion Among hospitalized patients with Covid-19, LV dysfunction has been reported in one quarter, with smaller proportions of right ventricular dysfunction, pericardial effusion and pulmonary hypertension. However, there was a higher proportion of LV dysfunction among studies reporting the presence of prior heart disease, which suggests that cardiac dysfunction was mostly pre-existing.

https://doi.org/10.36660/abc.20210485

11.

REDGIM COMO APLICATIVO DE SMARTPHONE PARA APLICAÇÕES QUIMIOMÉTRICAS POR MEIO DE ANÁLISE DE IMAGENS: UM USO EM PLS
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rosa, Thalles R.

; Siqueira, Bruno M. M.

; Costa, Rayana A.

; Reis, Jadson Z. dos

; Pacheco, Wagner L. S.

; Moura, Paulo R. G. de

; Romão, Wanderson

; Filgueiras, Paulo R.

Química Nova

Journal Metrics
- Sobre o periódico
- SciELO Analytics

may 2022, Volume 45 N. 5 Pages 550 - 559

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

The study of the spectrum of light has increased its range of action in the field of chemistry, with the help of several advanced equipment and innovative techniques that have become a strong ally of analytical chemistry. However, the simplicity of obtaining results integrated with mobile devices appears as an interesting path to be taken in the field of chemical analysis. This work addresses the dissemination of an application called REDGIM for smartphones on the Android platform capable of working with multivariate image analysis using chemometric methods through the luminous intensities of photos and R (red), G (green) and B (blue) channels. In order to show the potential of REDGIM, we propose two applications using the partial least squares (PLS) regression method: 1) quantification of free chlorine in tap water; and 2) quantification of cannabinol, (CBN, a type of cannabinoid) in marijuana and hashish samples. The free chlorine concentration obtained for two investigated samples was 0.73 and 0.74 mg L-1 and 0.74 and 0.76 mg L-1 by the spectrophotometer and by the application (container: cuvette), respectively. For the quantification of CBN in marijuana and hashish samples, the mean concentration ranged from 6.137 to 8.823 mg mL-1. The results obtained by the application are compatible with results from traditional techniques, such as UV-Vis spectrophotometry, for example. Therefore, REDGIM was proved to be a simple and accessible technological tool for the scientific community, being viable for chemical tests of a multivariate nature.

https://doi.org/10.21577/0100-4042.20170861

12.

Evolution of public policies on natural disasters in brazil and worldwide
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

KUHN, CAIUBI E.S.

; REIS, FÁBIO A.G.V.

; OLIVEIRA, VINICIUS G. DE

; CABRAL, VICTOR C.

; GABELINI, BEATRIZ M.

; VELOSO, VINICIUS Q.

Anais da Academia Brasileira de Ciências

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 94 Suppl. 4 elocation e20210869

Abstract: En | Text: En | PDF: En

Abstract This work aims to carry out an analysis of the evolution of the civil defense protection policy in Brazil, as well as to present an overview of research related to public policies on natural disasters in the world. The research was developed by documentary analysis of Brazilian policies on the protection of civil defense and bibliometric analysis of the global data. The evolution of public policy on natural disasters in Brazil was divided into four different moments: a) military civil defense (1942-1946), b) disaster assistance policy (1967-1988), c) Civil Defense system in construction (1988-2005), and d) consolidation of the civil defense system (2005- to the present). The structuring of public policy reflected in 4 different stages in relation to the recording of information about disasters. Bibliometric analysis showed that the first works related to public civil defense policies in the world appeared only in 1980, and are mainly concentrated in the United States, which accounts for 42.56% of the works, while Brazil is the 6th country with 3.76% of global searches. Thus, it is possible to conclude that public policies and databases have a recent evolution both in Brazil and in the world, especially in developing countries.

https://doi.org/10.1590/0001-3765202220210869

13.

Microbial source tracking and antimicrobial resistance in one river system of a rural community in Bahia, Brazil
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Moretto, V. T.

; Bartley, P. S.

; Ferreira, V. M.

; Santos, C. S.

; Silva, L. K.

; Ponce-Terashima, R. A.

; Blanton, R. E.

; Reis, M. G.

; Barbosa, L. M.

Brazilian Journal of Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 82 elocation e231838

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

Resumo O uso de antibióticos inevitavelmente leva à resistência antimicrobiana. A seleção para resistência antimicrobiana ocorre principalmente no intestino de seres humanos e animais, bem como no meio ambiente, através da resistência natural e resíduos de antibióticos nos esgotos e no solo. Avaliamos a resistência antimicrobiana em bactérias Gram-negativas de um sistema fluvial em uma comunidade rural da Bahia, Brasil. A água foi coletada nos rios Jiquiriçá e Brejões e no abastecimento de água encanada. Além disso, foram coletadas amostras randomizadas de fezes de moradores, vacas, porcos e cavalos próximos ao rio. As amostras foram triadas para bactérias resistentes à ciprofloxacina, cefotaxima e meropenem e identificadas bioquimicamente nos níveis de gênero e espécie. O rastreamento de fontes microbianas demonstrou que a contaminação fecal de ruminantes e humanos aumentou à medida que os rios se aproximavam do centro da vila e diminuía após a última residência. Bactérias resistentes a antibióticos foram identificadas em todas as amostras (n = 32). Nenhuma bactéria demonstrou ser resistente aos carbapenêmicos testados, contudo, foi encontrado enterobactérias resistentes à ciprofloxacina, ainda que essa classe de antibióticos não seja comumente usada na medicina veterinária dos animais dessa região. Considerando esses fatos, juntamente com o padrão de contaminação fecal avaliado, a fonte de contaminação humana foi considerada a mais provável na interação desses isolados resistentes.

Abstract Use of antibiotics inevitably leads to antimicrobial resistance. Selection for resistance occurs primarily within the gut of humans and animals as well as in the environment through natural resistance and residual antibiotics in streams and soil. We evaluated antimicrobial resistance in Gram negative bacteria from a river system in a rural community in Bahia, Brazil. Water was collected from the Jiquiriçá and Brejões rivers and the piped water supply. Additionally, stools were collected from a random sample of residents, cows, pigs and horses near the river. The samples were screened for bacteria resistant to ciprofloxacin, cefotaxime, and meropenem and identified biochemically at the genus and species levels. Microbial source tracking demonstrated that ruminant and human fecal contamination increased as the rivers neared the village center and decreased after the last residence. Antibiotic bacteria were identified from all samples (n = 32). No bacteria were resistant to carbapenems, but the majority of the enterobacteria were resistant to ciprofloxacin, even though this class of antibiotics is not commonly used in food animals in this region. Considering these facts, together with the pattern of human fecal contamination, a human source was considered most likely for these resistant isolates.

https://doi.org/10.1590/1519-6984.231838 492 downloads

14.

Phytochemical characterization, and antioxidant and antibacterial activities of the hydroethanolic extract of Anadenanthera peregrina stem bark
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Marinho, T. A.

; Oliveira, M. G.

; Menezes-Filho, A. C. P.

; Castro, C. F. S.

; Oliveira, I. M. M.

; Borges, L. L.

; Melo-Reis, P. R.

; Silva-Jr, N. J.

Brazilian Journal of Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 82 elocation e234476

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

Resumo O bioma Cerrado brasileiro apresenta em uma grande variedade de espécies endêmicas com diversos compostos bioativos, e Anadenanthera peregrina (L.) Speg é uma espécie promissora. Neste estudo, objetivamos realizar a caracterização fitoquímica e avaliar as atividades antioxidantes e antibacterianas contra Staphylococcus aureus e Escherichia coli do extrato hidroetanólico de cascas do caule de A. peregrina. As cascas foram coletadas no Jardim Botânico de Goiânia, Brasil. O extrato hidroetanólico foi obtido por percolação e submetido a triagem físico-química, estimativa de conteúdo fenólico total, impressão digital por cromatografia líquida de alta eficiência (HPLC) e determinação da atividade antioxidante (valores de IC50 foram calculados para o ensaio 2,2-difenil-1-picril-hidrazil) e antibacteriana. O pH do extrato foi de 5,21 e a densidade foi de 0,956 g/cm3. A triagem fitoquímica indicou a presença de glicosídeos cardíacos, ácidos orgânicos, açúcares redutores, saponinas hemolíticas, fenóis, cumarinas, taninos condensados, flavonóides, catequinas, depsídios e depsidonas derivados de benzoquinonas. O extrato mostrou intensa atividade hemolítica. O conteúdo fenólico total foi de 6,40 g de GAE 100 g-1. A análise por impressão digital por HPLC revelou a presença de ácido gálico, catequina e epicatequina. Confirmamos a atividade antioxidante do extrato. Além disso, o extrato não inibiu o crescimento de colônias de E. coli em nenhum volume testado, mas houve halos em torno das colônias de S. aureus nos três volumes testados. Estes resultados contribuem para uma melhor compreensão da composição química da casca de A. peregrina e apoia ainda mais as aplicações medicinais desta espécie.

Abstract The Brazilian Cerrado biome consists of a great variety of endemic species with several bioactive compounds, and Anadenanthera peregrina (L.) Speg is a promising species. In this study, we aimed to perform phytochemical characterization and evaluate the antioxidant and antibacterial activities against Staphylococcus aureus and Escherichia coli of the hydroethanolic extract of A. peregrina stem bark. The barks were collected in the Botanical Garden of Goiânia, Brazil. The hydroethanolic extract was obtained by percolation and subjected to physicochemical screening, total phenolic content estimation, high-performance liquid chromatography (HPLC) fingerprinting, and antioxidant (IC50 values were calculated for the 2,2-diphenyl-1-picrylhydrazyl assay - DPPH) and antibacterial activity determination. The pH of the extract was 5.21 and density was 0.956 g/cm3. The phytochemical screening indicated the presence of cardiac glycosides, organic acids, reducing sugars, hemolytic saponins, phenols, coumarins, condensed tannins, flavonoids, catechins, depsides, and depsidones derived from benzoquinones. The extract showed intense hemolytic activity. The total phenolic content was 6.40 g GAE 100 g-1. The HPLC fingerprinting analysis revealed the presence of gallic acid, catechin, and epicatechin. We confirmed the antioxidant activity of the extract. Furthermore, the extract did not inhibit the growth of E. coli colonies at any volume tested, but there were halos around S. aureus colonies at all three volumes tested. These results contribute to a better understanding of the chemical composition of A. peregrina stem bark and further support the medicinal applications of this species.

https://doi.org/10.1590/1519-6984.234476 447 downloads

15.

Estudo do Universo de Friedmann partindo de conceitos Newtonianos
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Reis, Patrício D.C. dos

; Seifert, Evandro G.

; Gabrick, Enrique C.

; Jantsch, Rudinei C.S.

; Iarosz, Kelly C.

; Batista, Antonio M.

; Trobia, José

Revista Brasileira de Ensino de Física

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 44 elocation e20220196

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

Neste trabalho, realizamos um estudo numérico para o modelo cosmológico de Friedmann partindo de conceitos Newtonianos. Originalmente, esse modelo foi construído utilizando o ferramental matemático da Relatividade Geral, que possui grande nível de complexidade e não é acessível para os estudantes dos níveis iniciais da graduação. Sendo assim, a abordagem desse modelo através de conceitos Newtonianos torna acessível a compreensão de alguns conceitos básicos da Cosmologia. Além disso, também é possível que o estudante utilize esse material como uma introdução aos estudos dos métodos numéricos e computacionais. Na descrição de um Universo expansivo, as equações diferenciais são resolvidas numericamente pelo Método de Runge-Kutta de quarta ordem. Os resultados apresentados pelos gráficos das soluções numéricas condizem com os dados observacionais, descrevendo qualitativamente as eras pelas quais o Universo passou. Como motivação para o estudante, disponibilizamos as rotinas computacionais em C, Octave e Simulink.

In this work, we study Friedmann’s cosmological model from a numerical approach. To obtain Friedmann’s equations, we use Newtonian concepts. In general, this model has been constructed using the mathematical tools of General Relativity, which have a high level of complexity and are not easily approachable to initial-grade undergraduate students. For this reason, the approach of this model using Newtonian concepts makes the understanding of basic cosmology concepts. Furthermore, it is also possible to make the student use this work as an introduction to numerical and computational methods. Describing an expansive Universe, the differential equations are solved by the fourth-order Runge-Kutta method. The results shown by the numerical solution agree with the observational data, describing the ages of the Universe. As motivation for the student, we provided access to the computational routines in C, Octave, and Simulink.

https://doi.org/10.1590/1806-9126-rbef-2022-0196

Showing

itens per page

Page of 7 Next

Select one or more results

All Alphabetic

Results

Comparative chart Download CSV

Statistics of

Send result

To*

Use ; (semicolon) to insert more emails.

Send to email

This page

Selected records

All references (max. 300)

Your email

Subject

Comments

Export format:

RIS (for EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citation

CSV (for Excel, etc)

Export:

This page

Selected itens

All references (max. 2000)

Sem resultados

No documents were found for your search

Glossary and search help

You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.

For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

See below the complete list of search indexes that can be used:

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

All the contents of this site www.scielo.br, except where otherwise noted, is licensed under a Creative Commons Attribution License.
more »