Pesquisa | SciELO

ABSTRACT This study aimed to determine the antibiotic profile of microorganisms isolated from urine samples of patients with community urine tract infections (UTI) admitted to the University Hospital of the Federal University of Sao Carlos to support an appropriate local empirical treatment. A retrospective cross-sectional study was conducted from October 2018 to October 2020. Data from 1,528 positive urine cultures for bacterial pathogens and antibiograms were tabulated. Bacterial species prevalence and their resistance profile were analyzed and compared by sex and age. For Gram-negative fermenting bacteria, resistance rates were compared between patients with previous hospitalization and the total of infections caused by this group. For comparisons, the Chi-square test was performed, using Fisher’s exact test when necessary (BioEstat program, adopting p ≤ 0.05). A multivariate analysis was applied to assess the effect of the studied variables in predicting multidrug resistance. Infections were more prevalent in women and older adults. Gram-negative bacteria represented 90.44% of total cultures. In both sexes, E. coli prevalence was significantly higher in adults compared with older adults (p < 0.0001). For several antibiotics, resistance rates were higher in the older adults compared with other ages and in patients with Gram-negative fermenting infections and previous hospitalization compared with the total of infections by this group of bacteria. The closer to the hospitalization, the higher the number of antibiotics with superior resistance rates. Resistance rates for aminoglycosides, carbapenems, ceftazidime, nitrofurantoin, piperacillin+tazobactam, and fosfomycin were less than 20%, considered adequate for empirical treatment. Only hospitalization in the previous 90 days was statistically significant in predicting infections by multidrug-resistant bacteria.

https://doi.org/10.1590/s1678-9946202466003

[SciELO Preprints] - What is the influence of lifestyle habits and socioeconomic factors on the occurrence of prostate cancer in Brazil?
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Souza, Marco Antonio de Monteiro, Camila Nascimento Barros, Cláudia Renata dos Santos

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Data de publicação: 2023-12-08

Resumo: En Es Pt

Objective: the investigation of physical, lifestyle and socioeconomic features that may be associated with the occurrence of prostate cancer in Brazil. Methods: a microdata base referring to the 2019 National Health Survey in Brazil was used, with the selection of 42,799 male individuals; this group was analyzed using statistical methods and machine learning modeling (logistic regression and decision tree). Results: the models applied allowed us to identify with a good level of accuracy individuals with prostate cancer diagnosis (DCP), in addition to groups with specific features more strongly associated with such a disease. Conclusion: the models indicate a significant influence of socioeconomic, physical and dietary factors on the frequency of DCP in the analyzed group. The high level of accuracy and sensitivity of the models demonstrates the potential of machine learning methods for predicting DCP.

Objetivo: investigar características físicas, de estilo de vida y socioeconómicas que pueden estar asociadas con la aparición de cáncer de próstata en Brasil. Métodos: se utilizó una base de microdatos referente a la Encuesta Nacional de Salud de 2019, con la selección de 42.799 individuos del sexo masculino; este grupo fue analizado mediante métodos estadísticos y modelado de machine learning (regresión logística y árbol de decisión). Resultados: los modelos aplicados permitieron identificar con buen nivel de exactitud a los individuos con diagnóstico de cáncer de próstata (DCP), además de grupos con características específicas más fuertemente asociadas a esta enfermedad. Conclusión: los modelos indican influencia significativa de factores socioeconómicos, físicos y dietéticos sobre la frecuencia de DCP en el grupo analizado. El alto nivel de exactitud y sensibilidad de los modelos demuestra el potencial de los métodos de machine learning para predecir la DCP.

Objetivo: investigar características físicas, de hábitos de vida e socioeconômicas que podem estar associadas à ocorrência de câncer de próstata no Brasil. Métodos: uma base de microdados referente à Pesquisa Nacional de Saúde 2019 foi utilizada, com a seleção de 42.799 indivíduos do sexo masculino; este grupo foi analisado por meio de métodos estatísticos e modelagem por machine learning (regressão logística e árvore de decisão). Resultados: os modelos aplicados permitiram identificar com bom nível de acurácia os indivíduos que receberam o diagnóstico de câncer de próstata (DCP), além de grupos com características específicas mais fortemente associados a esta doença. Conclusão: os modelos indicam uma influência significativa de fatores socioeconômicos, físicos e alimentares na frequência de DCP no grupo analisado. O alto nível de acurácia e sensibilidade dos modelos demonstra o potencial dos métodos de machine learning para a previsão de DCP.

https://doi.org/10.1590/SciELOPreprints.7566

Reply to the letter regarding the article entitled: “Access to rehabilitation after stroke in Brazil (AReA study): multicenter study protocol” entitled Access AReA study) protocol
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Cacho, Roberta de Oliveira

; Moro, Carla Heloisa Cabral

; Bazan, Rodrigo

; Guarda, Suzete Nascimento Farias da

; Pinto, Elen Beatriz

; Andrade, Suellen Mary Marinho dos Santos

; Valler, Lenise

; Almeida, Kelson James

; Ribeiro, Tatiana Souza

; Jucá, Renata Viana Brígido de Moura

; Minelli, Cesar

; Piemonte, Maria Elisa Pimentel

; Paschoal, Eric Homero Albuquerque

; Pedatella, Marco Túlio Araújo

; Pontes-Neto, Octávio Marques

; Fontana, Ana Paula

; Pagnussat, Aline de Souza

; Conforto, Adriana Bastos

Arquivos de Neuro-Psiquiatria

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Jul 2023, Volume 81 Nº 7 Páginas 703 - 704

Resumo: En | Texto: En | PDF: En

https://doi.org/10.1055/s-0043-1771266

Increased expression of matrix metalloproteinases 2 and 9 as poor prognosis factor for Hodgkin’s lymphoma patients
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Silva, Bárbara de Oliveira

; Medeiros, Jonathan Wagner

; Albuquerque, Giwellington Silva

; Valderrama, Pavel Medina

; Barbosa, Athos Henrique de Quevedo

; Souza, Juliana Maria de

; Oliveira, Renata Santos

; Morais, Adriana Lins

; Silva Neto, Jacinto da Costa

; Muniz, Maria Tereza Cartaxo

Jornal de Pediatria

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Jan 2023, Volume 99 Nº 1 Páginas 59 - 64

Resumo: En | Texto: En | PDF: En

Abstract Objective: The aim of our study was to evaluate the expression of MMP-2 and MMP-9 as a prognostic factor in patients diagnosed with Hodgkin Lymphoma (HL). Methods: In the present study, 45 paraffin biopsies from patients up to 19 years old diagnosed with HL were used in two referral hospitals in the state of Pernambuco, Brazil. Risk groups were classified into favorable and unfavorable, according to Ann Arbor. The expression of matrix metalloproteinases 2 and 9 and their inhibitors was performed by immunohistochemistry (IHC). Data were analyzed using the GraphPad Prism 5 program. Results: MMP-2 intensity pattern was stronger (> 10% of the total field) in patients with stage III/ IV and B symptoms. MMP-2 showed an association with the risk group (p = 0.0388). That is, the stronger the MMP-2 marking, the greater the unfavorable risk. However, for MMP-9 there was no difference in the stronger intensity pattern in relation to stages I/II and III/IV, only in the presence of B symptoms. MMP-9 showed an association with B Symptoms (p = 0.0411). Therefore, patients with B symptoms have higher MMP-9 expression. Conclusion: Our results suggest that MMP-2 expression is associated with HL progression. While MMP-9 expression is related to the clinical worsening of these patients. However, further studies are needed to evaluate the exact role of these proteins in hematologic malignancies.

https://doi.org/10.1016/j.jped.2022.05.004

Reproductive behavior of Pantaneiros sheep, Mato Grosso do Sul, Brazil
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Martins, Charles Ferreira

; Santiago Filho, Arnaldo

; Ferreira, Marcos Barbosa

; Fernandes, Carlos Eurico dos Santos

; Monreal, Antonio Carlos Duenhas

; Souza, Carla Giselly de

; Chagas, Renata Alves das

; Vargas Junior, Fernando Miranda de

Acta Scientiarum. Animal Sciences

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2023, Volume 45 elocation e57518

Resumo: En | Texto: En | PDF: En

ABSTRACT. The objective was to evaluate fertility, cyclicality behavior, and sexual performance of Pantaneiro sheep throughout the year’s photoperiods in Mato Grosso do Sul - Brazil. Two experiments were conducted. In experiment one, the ewes used aged between 2 and 4 years, distributed in three homogeneous groups of 54 animals and subjected to reproductive evaluation in three different predefined luminosity periods, consisting of autumn (11h 45 min.), spring (12h 30 min.), and summer (12h 55 min.). The characteristics studied were body weight (BW), body condition score (BCC), estrus distribution (EST), percentage of pregnant females per cycle (%P), plasma progesterone (PP), and fertility (F) in the three predefined seasons. The mating system used was controlled natural nocturnal and lasted for 45 days. Experiment two, evaluated the ram sexual activity. The males (10) were individually exposed to four ovariectomized ewes. The ewes cycled during evaluated seasons, and the highest fertility was observed in animals with BCC >2.75. The PP concentration differed among periods, and higher conception rates (F) were observed in autumn and spring. The rams (75%) had a medium of sexual performance when they performed more than two ejaculations in 20 min throughout the seasons. Pantaneiro sheep of both genders had a similar fertility index, with early and constant activity throughout the year, displaying no photoperiodism or seasonality.

https://doi.org/10.4025/actascianimsci.v45i1.57518

Hesitação vacinal contra a COVID-19 na América Latina e África: uma revisão de escopo
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Gonçalves, Bruna Aparecida

; Matos, Camila Carvalho de Souza Amorim

; Ferreira, Jonathan Vicente dos Santos

; Itagyba, Renata Fortes

; Moço, Vinicius Rocha

; Couto, Marcia Thereza

Cadernos de Saúde Pública

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2023, Volume 39 Nº 8 elocation e00041423

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

Resumo: A vacinação tem papel relevante para conter os avanços da pandemia de COVID-19. No entanto, a hesitação vacinal com os imunizantes que agem contra o SARS-CoV-2 tem causado preocupação em âmbito global. Esta revisão de escopo tem como objetivo mapear a literatura científica sobre a hesitação vacinal contra a COVID-19 na América Latina e África sob uma perspectiva da Saúde Global, observando as particularidades do Sul Global e o uso de parâmetros validados pela Organização Mundial da Saúde (OMS). O relato da revisão segue as recomendações do protocolo PRISMA para Revisões de Escopo (PRISMA-ScR). O levantamento foi realizado nas bases de dados PubMed, Scopus, Web of Science e Biblioteca Virtual em Saúde (BVS), selecionando estudos publicados entre 1º de janeiro de 2020 e 22 de janeiro de 2022, os quais indicam que a hesitação vacinal contra a COVID-19 envolve fatores como o cenário político, a disseminação de desinformação, diferenças regionais referentes ao acesso à Internet, falta de acesso à informação, o histórico de resistência à vacinação, falta de informações sobre a doença e a vacina, preocupação com eventos adversos, eficácia e segurança dos imunizantes. Quanto ao uso dos referenciais conceituais e metodológicos da OMS sobre hesitação vacinal, poucos estudos (apenas 6 de 94) utilizam instrumentos de pesquisa baseado neles. Desta forma, a replicação de parâmetros conceituais e metodológicos elaborados por expertises do Norte Global em contextos do Sul Global tem sido criticada pela perspectiva da Saúde Global, em decorrência da possibilidade de não considerar as especificidades políticas e socioculturais, as diferentes nuances de hesitação vacinal e questões de acesso às vacinas.

Resumen: La vacunación tiene un papel relevante para frenar los avances de la pandemia de COVID-19. Sin embargo, la indecisión a las vacunas contra el SARS-CoV-2 ha causado preocupación a nivel global. Esta revisión de alcance tiene como objetivo mapear la literatura científica sobre la indecisión a las vacunas contra COVID-19 en América Latina y África desde una perspectiva de la Salud Global, observando las particularidades del Sur Global y el uso de parámetros validados por la Organización Mundial de la Salud (OMS). El informe de la revisión sigue las recomendaciones del protocolo PRISMA para Revisiones de Alcance (PRISMA-ScR). La encuesta se realizó en las bases de datos PubMed, Scopus, Web of Science e Biblioteca Virtual en Salud (BVS), seleccionando los estudios publicados entre 1º de enero de 2020 y 22 de enero de 2022. Los estudios seleccionados indican que la indecisión a las vacunas de COVID-19 involucra factores como el escenario político, la diseminación de desinformación, las diferencias regionales de cada territorio referente al acceso a Internet, la falta de acceso a la información, el historial de resistencia a la vacunación, la falta de informaciones sobre la enfermedad y la vacuna, la preocupación por los eventos adversos, la eficacia y la seguridad de los inmunizantes. En cuanto al uso de los referenciales conceptuales y metodológicos de la Organización Mundial de la Salud (OMS) sobre la indecisión a las vacunas, pocos estudios (6/94) utilizan instrumentos de investigación basados en esos referenciales. Así, la replicación de parámetros conceptuales y metodológicos elaborados por expertos del Norte Global en contextos del Sur Global ha sido criticada por la perspectiva de la Salud Global, por la posibilidad de no considerar las especificidades políticas y socioculturales, los diferentes matices de la indecisión a las vacunas y cuestiones de acceso a las vacunas.

Abstract: Vaccination has played an important role in the containment of COVID-19 pandemic advances. However, SARS-CoV-2 vaccine hesitancy has caused a global concern. This scoping review aims to map the scientific literature on COVID-19 vaccine hesitancy in Latin America and Africa from a Global Health perspective, observing the particularities of the Global South and using parameters validated by the World Health Organization (WHO). The review reporting observes the recommendations of the PRISMA for Scoping Reviews (PRISMA-ScR) model. Search was conducted in PubMed, Scopus, Web of Science, and Virtual Health Library (VHL) databases, selecting studies published from January 1, 2020 to January 22, 2022. Selected studies indicate that COVID-19 vaccine hesitancy involves factors such as political scenario, spread of misinformation, regional differences in each territory regarding Internet access, lack of access to information, history of vaccination resistance, lack of information about the disease and the vaccine, concern about adverse events, and vaccine efficacy and safety. Regarding the use of conceptual and methodology references from the WHO for vaccine hesitancy, few studies (6/94) use research instruments based on these references. Then, the replication in Global South of conceptual and methodological parameters developed by experts from the Global North contexts has been criticized from the perspective of Global Health because of it may not consider political and sociocultural particularities, the different nuances of vaccine hesitancy, and issues of access to vaccines.

https://doi.org/10.1590/0102-311xpt041423

Queima de biomassa da cana-de-açúcar e hospitalizações de crianças e idosos por agravos respiratórios em Pernambuco, Brasil
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Domingues, Renata Cordeiro

; Gurgel, Aline do Monte

; Santos, Romário Correia dos

; Pereira, João Antonio dos Santos

; Bezerra, Virgínia Carmem Rocha

; Souza, Wayner Vieira de

; Santos, Mariana Olívia Santana dos

; Gurgel, Idê Gomes Dantas

Cadernos de Saúde Pública

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2023, Volume 39 Nº 10 elocation e00238422

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

Resumo: Este estudo buscou analisar a relação entre as hospitalizações por agravos respiratórios e a queima regular da cana-de-açúcar em Pernambuco, Brasil. Trata-se de um estudo ecológico de série temporal correspondente ao período de 2008 a 2018. Foram comparadas as taxas de hospitalizações por agravos respiratórios em crianças menores de 5 anos e em idosos maiores de 60 anos em municípios produtores e não produtores de cana-de-açúcar, por meio da análise estatística não paramétrica de Mann-Whitney. Conjuntamente, foi observada a distribuição mensal das ocorrências de focos de calor nos municípios casos e controles e aplicada a correlação de Pearson para analisar a associação entre ambas as variáveis. Foi verificado que, para ambos os grupos etários, as taxas de hospitalizações são maiores nos municípios produtores de cana-de-açúcar, com diferença estatística significativa p < 0,005. A taxa de internação hospitalar em idosos é 28% mais elevada nos municípios casos, sendo ainda maior em crianças menores de 5 anos, cuja razão das medianas é 40%. No entanto, foi identificado que o comportamento sazonal das hospitalizações por agravos respiratórios diverge do observado na distribuição mensal dos focos de calor, não havendo correlação estatística significativa. Esses achados sugerem possível associação com a exposição crônica aos particulados emitidos pela queima de biomassa, comprometendo a saúde de grupos vulneráveis, e endossam a necessidade de substituição das queimadas no monocultivo da cana-de-açúcar, bem como a estruturação de políticas públicas de proteção à saúde humana e ambiental.

Abstract: This study aimed to analyze the relationship between hospitalizations for respiratory problems and the regular burning of sugarcane in Pernambuco State, Brazil. This is an ecological time series study corresponding to the period from 2008 to 2018. The rates of hospitalizations for respiratory diseases in children aged under 5 years and in adults older than 60 years in sugarcane-producing and non-producing municipalities were compared using nonparametric Mann-Whitney statistical analysis. Together, we observed the monthly distribution of the hot spots occurrences in the case and control municipalities and applied Pearson’s correlation to analyze the association between both variables. For both age groups, hospitalization rates are higher in sugarcane-producing municipalities, with a statistically significant difference p < 0.005. The rate of hospitalization in older adults is 28% higher in the case municipalities, and is even higher in children aged under 5 years whose ratio of the medians is 40%. However, the seasonal behavior of hospitalizations for respiratory diseases differs from that observed in the monthly distribution of hot spots, without statistically significant correlation. These findings suggest a possible association with chronic exposure to particulates emitted by biomass burning, compromising the health of vulnerable groups, and endorse the need to replace fires in the monoculture of sugarcane and to structure public policies to protect human and environmental health.

Resumen: Este estudio buscó analizar la relación entre las hospitalizaciones por enfermedades respiratorias y la quema regular de caña de azúcar en Pernambuco, Brasil. Se trata de un estudio ecológico de serie temporal correspondiente al período entre 2008 y 2018. Las tasas de hospitalizaciones por enfermedades respiratorias en niños menores de 5 años y en ancianos mayores de 60 años en municipios productores de caña de azúcar y en los municipios no productores de azúcar se compararon mediante el análisis estadístico no paramétrico de Mann-Whitney. Se observó en conjunto la distribución mensual de las ocurrencias de puntos calientes en los casos y controles de los municipios, y se aplicó la correlación de Pearson para analizar la asociación entre ambas variables. Se encontró que, para ambos grupos de edad, las tasas de hospitalización fueron más altas en los municipios productores de caña de azúcar, con una diferencia estadísticamente significativa p < 0,005. La tasa de hospitalización de los ancianos fue un 28% mayor en los municipios casos, y aún mayor que la de los niños menores de 5 años cuya relación de las medianas fue del 40%. Sin embargo, se identificó que el comportamiento estacional de las hospitalizaciones por enfermedades respiratorias difiere de lo observado en la distribución mensual de puntos calientes, sin correlación estadística significativa. Estos hallazgos evidencian una posible asociación con la exposición crónica a partículas emitidas por la quema de biomasa, lo que afecta la salud de los grupos vulnerables, además apuntan a la necesidad de implementar medidas contra los incendios en el monocultivo de la caña de azúcar y políticas públicas para proteger la salud humana y el medioambiente.

https://doi.org/10.1590/0102-311xpt238422

Accuracy of the urine point-of-care circulating cathodic antigen assay for diagnosing Schistosomiasis mansoni infection in Brazil: A multicenter study
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Pieri, Otavio Sarmento

; Bezerra, Fernando Schemelzer Moraes

; Coelho, Paulo Marcos Zech

; Enk, Martin Johannes

; Favre, Tereza Cristina

; Graeff-Teixeira, Carlos

; Oliveira, Ricardo Riccio

; Reis, Mitermayer Galvão dos

; Andrade, Lee Senhorinha de Almeida

; Beck, Lilian Christina Nóbrega Holsbach

; Favero, Vivian

; Fialho, Thainá Rodrigues de Souza

; Guimarães, Ricardo José de Paula Souza e

; Oliveira, Bruna Souza Santos

; Pascoal, Vanessa Fey

; Pinheiro, Marta Cristhiany Cunha

; Santos, Ronald Alves dos

; Silva, Luciano Kalabric

; Siqueira, Isadora Cristina de

; Souza, Renata Perotto de

; Katz, Naftale

Revista da Sociedade Brasileira de Medicina Tropical

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2023, Volume 56 elocation e0238-2022

Resumo: En | Texto: En | PDF: En

ABSTRACT Background: The World Health Organization recommends a market-ready, urine-based point-of-care diagnostic test for circulating cathodic antigens (CCA) to determine the prevalence of S. mansoni. This study evaluated the performance of the URINE CCA (SCHISTO) ECO TESTE® (POC-ECO), which is currently available in Brazil. Methods: Residents from eight sites with different prevalence estimates provided one urine sample for POC-ECO and one stool sample for Kato-Katz (KK) and Helmintex® (HTX) testing as an egg-detecting reference for infection status. Results: None of the study sites had significantly higher POC-ECO accuracy than KK. Conclusions: POC-ECO is not currently recommended in Brazilian schistosomiasis elimination programs.

https://doi.org/10.1590/0037-8682-0238-2022

Chemical composition and biological activities of the essential oils from Lippia alba and Lippia origanoides
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SANTOS FILHO, LUIZ G.A. DOS

; REIS, RENATA B. DOS

; SOUZA, ANA SHEILA Q.

; CANUTO, KIRLEY M.

; BRITO, EDY S. DE

; CASTRO, KARINA N.C.

; PEREIRA, ALITIENE M.L.

; DINIZ, FÁBIO MENDONÇA

Anais da Academia Brasileira de Ciências

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2023, Volume 95 Nº 1 elocation e20220359

Resumo: En | Texto: En | PDF: En

Abstract There is an increasing interest in essential oils extracted from Verbenaceae plant species as potential sources of biologically active compounds that could provide a starting point for designing novel phyto-pharmaceuticals in aquaculture. The present study was aimed to investigate the chemical composition, antioxidant activity, acute toxicity and antimicrobial effects against Vibrio parahaemolyticus of essential oils extracted from Lippia alba and L. origanoides. Approximately 23 components were identified and quantified by gas chromatography-mass spectrometry and flame ionization detection in each species’ essential oil. The most predominant compounds were geranial (23.0%), limonene (17.0%) and neral (15.5%) in L. alba, and thymol (47.2%), p-cymene (16.0%) and E-caryophyllene (11.3%) in L. origanoides. The essential oils have antibacterial activity against Vibrio parahaemolyticus presenting Minimum Inhibitory Concentration (MIC) and Bactericidal Concentration (MBC) values between 156-625 µg mL-1. The essential oils also show antioxidant potential estimated by 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging assays, presenting IC50 of 60.16 mg mL-1 and 0.22 mg mL-1 for L. alba and L. origanoides EO, respectively. Both oils were classified as toxic to Artemia salina nauplii. Therefore, these essential oils may be useful for controlling pathogenic bacteria important to the aquaculture industry.

https://doi.org/10.1590/0001-3765202320220359

10.

Hesitação vacinal contra a COVID-19 na América Latina e África: uma revisão de escopo
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Gonçalves, Bruna Aparecida

; Matos, Camila Carvalho de Souza Amorim

; Ferreira, Jonathan Vicente dos Santos

; Itagyba, Renata Fortes

; Moço, Vinicius Rocha

; Couto, Marcia Thereza

Cadernos de Saúde Pública

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2023, Volume 39 Nº 8 elocation e00041423

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

https://doi.org/10.1590/0102-311xpt041423

11.

Antileishmanial effects of γCdcPLI, a phospholipase A2 inhibitor from Crotalus durissus collilineatus snake serum, on Leishmania (Leishmania) amazonensis γCdcPLI A serum (Leishmania
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Gonçalves, Marina Neves

; Lopes, Daiana Silva

; Teixeira, Samuel Cota

; Teixeira, Thaise Lara

; de Freitas, Vitor

; Costa, Tássia Rafaella

; Gimenes, Sarah Natalie Cirilo

; de Camargo, Isabella Mitie

; de Souza, Guilherme

; da Silva, Marcelo Santos

; Azevedo, Fernanda Van Petten de Vasconcelos

; Grego, Kathleen Fernandes

; Santos, Luísa Carregosa

; Oliveira, Vinícius Queiroz

; da Silva, Claudio Vieira

; Rodrigues, Renata Santos

; Yoneyama, Kelly Aparecida Geraldo

; Clissa, Patricia Bianca

; Rodrigues, Veridiana de Melo

Memórias do Instituto Oswaldo Cruz

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2023, Volume 118 elocation e220225

Resumo: En | Texto: En | PDF: En

BACKGROUND Leishmaniasis, a neglected disease caused by the parasite Leishmania, is treated with drugs associated with high toxicity and limited efficacy, in addition to constant reports of the emergence of resistant parasites. In this context, snake serums emerge as good candidates since they are natural sources with the potential to yield novel drugs. OBJECTIVES We aimed to show the antileishmanial effects of γCdcPLI, a phospholipase A2 inhibitor from Crotalus durissus collilineatus snake serum, against Leishmania (Leishmania) amazonensis. METHODS Promastigotes forms were exposed to γCdcPLI, and we assessed the parasite viability and cell cycle, as well as invasion and proliferation assays. FINDINGS Despite the low cytotoxicity effect on macrophages, our data indicate that γCdcPLI has a direct effect on parasites promoting an arrest in the G1 phase and reduction in the G2/M phase at the highest dose tested. Moreover, this PLA2 inhibitor reduced the parasite infectivity when promastigotes were pre-treated. Also, we demonstrated that the γCdcPLI treatment modulated the host cell environment impairing early and late steps of the parasitism. MAIN CONCLUSIONS γCdcPLI is an interesting tool for the discovery of new essential targets on the parasite, as well as an alternative compound to improve the effectiveness of the leishmaniasis treatment. Leishmaniasis efficacy context A serum (Leishmania amazonensis cycle assays macrophages G G2M GM G2 M tested Moreover PLA pretreated. pretreated pre treated. pre-treated Also parasitism

https://doi.org/10.1590/0074-02760220225

12.

Malate and cell wall aluminum immobilization act as resistance mechanisms in soybean roots
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Andrade, Renata

; Souza, Genaina Aparecida

; Brito, Danielle Santos

; Gonçalves, Bruno Guilherme

; Valadares, Samuel Vasconcelos

; Dal-Bianco, Maximiller

; Ribeiro, Cleberson

Bragantia

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2023, Volume 82 elocation e20230120

Resumo: En | Texto: En | PDF: En

ABSTRACT Toxic levels of aluminum (Al) in the soil can reduce the growth of different grain crops. To understand the effects of Al in soybean (Glycine max L.) seedlings Al accumulation and its effect on anatomy, morphology, and metabolism in roots of two soybean genotypes were evaluated: Suprema and A7002. For this, soybean plants were grown in nutrient Clark solution, pH 4.0, without Al (control) and with 100 µM of Al for 72 hours. Both genotypes accumulated Al in the roots, however, Suprema showed a higher Al accumulation than A7002. The latter genotype showed Al accumulated only in the cell walls of the epidermis and root cap, which did not affect root growth. On the other hand, in Suprema, Al accumulated in the cells of the root cap, epidermis, and the nucleus of the ground meristem cells, which resulted in inhibited root growth and structural damage in the root epidermis cells. Al modulated the primary metabolism with increases in the levels of glucose, fructose, sucrose, and malate in the roots of the genotype A7002 and reduced the starch levels in the Suprema genotype. The findings of this study suggest the A7002 genotype seems to be more resistant to Al than Suprema, mainly by the use of two important mechanisms: an increase in malate content and Al immobilization in the external cells of the root.

https://doi.org/10.1590/1678-4499.20230120

13.

Deep sea ecosystem exploration and ‘health check’: sampling strategy and methods applied during the iAtlantic_BR10_Petrobras cruise in the Santos Basin, Southwest Atlantic
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Perez, Jose Angel A.

; Barros Neto, Halésio M.C. de

; Arantes, Renata C.M.

; Gaurisas, Daniela Y.

; Silva, Camila F.

; Alves, Fernanda Maria M.

; Costa, Júlia A.

; Eloi, Paula D.C.

; Fonseca, Thayse S.

; Gavazzoni, Lucas

; Lonskis, Isabella da S.

; Nardi, Ricardo U.

; Nascimento, Pedro O.

; Rodrigues, João Vitor M.

; Santos, Ana Lara F. dos

; Santos, Edson C. dos

; Schroeder, Rafael

; Silva, Luis Carlos da

; Souza, Fernanda dos S.S. de

; Bernardino, Ângelo F.

; Cavalcanti, Guarani H.

; Lindner, Alberto

; Mahiques, Michel M. de

; Millo, Christian

; Reis, Priscila

; Sweetman, Andrew K.

; Roberts, J. Murray

Ocean and Coastal Research

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2023, Volume 71 elocation e23046

Resumo: En | Texto: En | PDF: En

Abstract The iAtlantic Project has established an international collaborative strategy to improve mapping and characterization of deep and open ocean ecosystems in understudied regions of the Atlantic and evaluate their health. In December 2022, the first iAtlantic expedition in the South Atlantic set off to map and explore seafloor ecosystems in the Santos Basin slope (200-1,000 m depths) in collaboration with the Petrobras ‘Santos Basin - Regional Characterization Project.’ The 17-day ‘iAtlantic_BR10-Petrobras’ cruise was conducted on board the research vessel NPqHOc Vital de Oliveira (Brazilian Navy) and performed (a) water column structure characterization, (b) seafloor morphology mapping, (c) description of benthic habitats and communities by seafloor imagery and biological/ geological sampling, and (d) ex-situ experiments to assess the functioning of sedimentary ecosystems and their responses to climate-related environmental changes. This study describes the rationale behind the iAtlantic_BR10-Petrobras cruise science plan, reports its sampling strategy and methods, and summarizes its collected data and preliminary results.

https://doi.org/10.1590/2675-2824071.23069jaap

14.

Contribution of public oral pathology services to the diagnosis of oral and oropharyngeal cancer in Brazil
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LOUREDO, Brendo Vinicius Rodrigues

; CURADO, Maria Paula

; PENAFORT, Paulo Victor Mendes

; DE ARRUDA, José Alcides Almeida

; ABREU, Lucas Guimarães

; MESQUITA, Ricardo Alves

; PINTO-JÚNIOR, Décio dos Santos

; ABRAHÃO, Aline Corrêa

; ANDRADE, Bruno Augusto Benevenuto de

; AGOSTINI, Michelle

; MORAES, Renata Mendonça

; ANBINDER, Ana Lia

; DOURADO, Pedro Henrique Silva

; SANTOS, Teresa Cristina Ribeiro Bartholomeu dos

; PIRES, Fábio Ramoa

; BORDIGNON, Natalia Cristina Trentin

; GONDAK, Rogério Oliveira

; DE OLIVEIRA, Marcia Gaiger

; CARRARD, Vinicius Coelho

; MARTINS, Manoela Domingues

; SOUSA-NETO, Sebastião Silvério

; ARANTES, Diego Antônio Costa

; MENDONÇA, Elismauro Francisco

; CIESLAK-SANCHES, Silvia Roberta

; ANTUNES, Daniella Moraes

; AMARAL-SILVA, Gleyson Kleber do

; MANIERI, Patricia Rubia

; RAMALHO, Luciana Maria Pedreira

; DOS SANTOS, Jean Nunes

; LEONEL, Augusto César Leal da Silva

; PEREZ, Danyel Elias da Cruz

; VERHEUL, Hannah Carmem Carlos Ribeiro Silva

; BARROSO, Keila Martha Amorim

; RODRIGUES, Flávia Luiza Santos

; GONZAGA, Amanda Katarinny Goes

; FERNANDES, Romana Renery

; DE SOUZA, Lélia Batista

; SOUZA, Lucas Lacerda de

; PONTES, Flávia Sirotheau Corrêa

; PONTES, Hélder Antônio Rebelo

; SILVA, Caroline Alfaia

; CÂMARA, Jeconias

; LIBÓRIO-KIMURA, Tatiana Nayara

; SANTOS-SILVA, Alan Roger

; LOPES, Márcio Ajudarte

; ALMEIDA, Oslei Paes de

; ROMAÑACH, Mário José

; VARGAS, Pablo Agustin

Brazilian Oral Research

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2023, Volume 37 elocation e126

Resumo: En | Texto: En | PDF: En

Abstract This study aimed to evaluate the contribution of oral and maxillofacial pathology laboratories (OMPLs) in Brazilian public universities to the diagnosis of lip, oral cavity, and oropharyngeal squamous cell carcinoma (SCC). A cross-sectional study was performed using biopsy records from a consortium of sixteen public OMPLs from all regions of Brazil (North, Northeast, Central-West, Southeast, and South). Clinical and demographic data of patients diagnosed with lip, oral cavity, and oropharyngeal SCC between 2010 and 2019 were collected from the patients’ histopathological records. Of the 120,010 oral and maxillofacial biopsies (2010-2019), 6.9% (8,321 cases) were diagnosed as lip (0.8%, 951 cases), oral cavity (4.9%, 5,971 cases), and oropharyngeal (1.2%, 1,399 cases) SCCs. Most cases were from Brazil’s Southeast (64.5%), where six of the OMPLs analyzed are located. The predominant profile of patients with lip and oral cavity SCC was Caucasian men, with a mean age over 60 years, low schooling level, and a previous history of heavy tobacco consumption. In the oropharyngeal group, the majority were non-Caucasian men, with a mean age under 60 years, had a low education level, and were former/current tobacco and alcohol users. According to data from the Brazilian National Cancer Institute, approximately 9.9% of the total lip, oral cavity, and oropharyngeal SCCs reported over the last decade in Brazil may have been diagnosed at the OMPLs included in the current study. Therefore, this data confirms the contribution of public OMPLs with respect to the important diagnostic support they provide to the oral healthcare services extended by the Brazilian Public Health System.

https://doi.org/10.1590/1807-3107bor-2023.vol37.0126

15.

Fish injuries resulting from transient operating conditions in a Brazilian hydropower plant: morphological, physiological and biochemical evaluation in Pimelodus maculatus (Siluriformes: Pimelodidae)
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Pedron, Janaína dos Santos

; Bernardes Junior, Jurandir Joaquim

; Ribolli, Josiane

; Souza, Jennyffer

; Pereira, Aline Guimarães

; Tolentino, Hugo

; Barros, Romuel

; Milarch, Carine de Freitas

; Dias, Rafael José Gonçalves

; Guereschi, Renata Maria

; Latini, Alexandra

; Nuñer, Alex Pires de Oliveira

Neotropical Ichthyology

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2023, Volume 21 Nº 3 elocation e220104

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

Abstract This study investigated injuries sustained by Pimelodus maculatus caused by transient operating conditions in a Brazilian hydroelectric power plant. Fish (n = 43) that inhabited the tailrace and appeared on the water surface after changes in the operating conditions were evaluated (IF). Additionally, fish (n = 10) captured using longline in the vicinity of the tailrace were used for comparisons (NF). Blood samples were evaluated for cortisol, glucose, and lactate concentrations. Tissue samples (gill, liver, brain, and muscle) were analyzed for oxidative stress biomarkers (TBARS, protein carbonyl content, and catalase activity) and histology (gill, liver, and spleen). The most prominent findings in IF were barotraumas with intra-abdominal hemorrhage and swim bladder rupture. Cortisol and glucose concentrations were lower for IF when compared to NF. IF also suffered from oxidative stress, as indicated by increased TBARS in the liver and brain, as well as increased protein carbonyl content in the gills and liver. The main histological alterations induced by the adverse conditions were circulatory disorders, such as telangiectasia and gill aneurysm, hepatic congested veins, and hemorrhage in the liver and spleen. The abrupt drop of pressure resulting from changes in the operating conditions of the turbines caused barotraumas and oxidative stress, which were the leading causes of fish mortality

Resumo Este estudo investigou os efeitos induzidos por condições transitórias de operação em uma usina hidrelétrica brasileira em Pimelodus maculatus. Peixes (n = 43) no canal de fuga que apareceram na superfície da água após mudanças nas condições operacionais foram avaliados. Adicionalmente, peixes (n = 10) capturados a jusante da barragem com espinhel foram utilizados para comparações (NF). Amostras de sangue foram avaliadas para as concentrações de cortisol, glicose e lactato. Amostras de tecidos (brânquia, fígado, cérebro e músculo) foram analisadas para biomarcadores de estresse oxidativo (TBARS, conteúdo de proteína carbonil e atividade da catalase) e histologia (brânquia, fígado e baço). Os achados mais proeminentes dos peixes afetados (IF) foram barotraumas com hemorragia intra-abdominal e ruptura da bexiga natatória. As concentrações de cortisol e glicose foram menores para IF quando comparadas aos NF. IF também sofreram estresse oxidativo representado pelo aumento de TBARS no fígado e cérebro, e aumento do conteúdo das proteínas carboniladas nas brânquias e fígado. As principais alterações histológicas induzidas pelas condições adversas foram distúrbios circulatórios, como telangiectasia e aneurisma nas brânquias, congestão das veias hepáticas, e hemorragia no fígado e baço. A queda abrupta da pressão resultante de mudanças nas condições operacionais das turbinas causou barotrauma e estresse oxidativo, que foram as principais causas da mortalidade dos peixes.

https://doi.org/10.1590/1982-0224-2022-0104

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