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Dinámica temporal de cambio de uso de suelo y vegetación en la cuenca Juluapan en el estado de Colima
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Meza-Rodríguez, Demetrio

; Olguín-López, José Luis

; Quintero-Gradilla, Shatya Devi

; Sánchez-Rodríguez, Enrique Valente

; Villalvazo-López, Víctor Manuel

Terra Latinoamericana

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dec 2023, Volume 41 elocation e1317

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

Summary: The study of the dynamic processes of the change of land use and vegetation is essential given the trends in the degradation processes of ecosystems. The Juluapan basin exhibits processes of change of land use and vegetation for more than 50 years, therefore, the objective of our study was to analyze the changes in land and vegetation use over time for the periods 1971 to 2010 and 2010 to 2018, with aerial and satellite images using Geographic Information Systems (GIS). The results obtained for the period of 1971-2010 show the loss of 752 hectares of shrub vegetation that represents 13.3% of the total area. For the 2010-2018 period, a loss of 202 hectares was estimated, with a deforested area of 3.6%. The exchange rate for tree vegetation of the 1971-2010 period was defined with -1.47% and for the 2010-2018 period with a -2.03%. The scenarios of change of land use and vegetation presented in this study will allow the development of actions in favor of soil resource planning related to land use ordinance at the local level, as well as the execution of programs that reduce the impact on natural resources and promote the rational use of ecosystems in this region.

Resumen: El estudio del proceso dinámico de cambio de uso de suelo y vegetación se considera esencial dadas las tendencias de los procesos de degradación de los ecosistemas. La cuenca Juluapan presenta procesos de cambio de uso de suelo y vegetación desde hace más de 50 años, por lo que el objetivo de la investigación es analizar el cambio de uso de suelo y vegetación a través del tiempo para los periodos 1971 a 2010 y 2010 a 2018, utilizando imágenes aéreas y de satélite, usando los Sistemas de Información Geográfica (SIG). Los resultados obtenidos para periodo de 1971-2010, manifiestan la pérdida de 752 hectáreas de vegetación arbustiva que representa 13.3% de la superficie total. Para el periodo 2010-2018, se estimó una pérdida de 202 hectáreas, con una superficie deforestada del 3.6%. La tasa de cambio para la vegetación arbórea del periodo de 1971-2010 se definió con un -1.47% y para el periodo 2010-2018 con una tasa de cambio -2.03%. Los escenarios de cambio en la cubierta vegetal y uso del suelo presentados en este estudio permitirán el desarrollo de acciones en favor de la planificación del recurso suelo, vinculadas con el ordenamiento del territorio a escala local y la ejecución de programas que aminoren el impacto hacia los recursos naturales y favorezcan el uso racional de los ecosistemas en esta región.

https://doi.org/10.28940/terra.v41i0.1317

Análisis espacial de las dinámicas de movilidad en la Zona Metropolitana de San Luis Potosí
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Hernández Cerda, Claudia N.

; Ávila Galarza, Alfredo

; Aguilar Robledo, Miguel

; Vázquez Solís, Valente

Estudios demográficos y urbanos

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aug 2023, Volume 38 N. 2 Pages 581 - 618

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

Resumen Este trabajo expone un análisis espacial de la movilidad cotidiana en la Zona Metropolitana de San Luis Potosí, cuyos patrones de desplazamiento de su población hasta ahora eran desconocidos. Con la implementación de una encuesta de movilidad y una matriz origen-destino, se observan las características de los viajes habituales de las personas y su distribución en el área de estudio. Los resultados reflejan las características de la movilidad, la concentración de viajes en ciertos puntos de la ciudad, la necesidad de tener más opciones de transporte, las limitantes en accesibilidad y conectividad, y las implicaciones socioambientales del esquema actual de movilidad.

Abstract This work presents a spatial analysis of daily mobility in the Metropolitan Area of San Luis Potosí, where the displacement patterns of its population are unknown. With the implementation of a mobility survey, and an origin-destination matrix, the characteristics of people’s habitual trips and their flows in the studied area are observed. The results reflect the characteristics of mobility, the concentration of trips in certain parts of the city, the need for more transportation options, the limitations in accessibility and connectivity, and the social and environmental implications of the current mobility scheme.

https://doi.org/10.24201/edu.v38i2.2123

A comprehensive case study on the sustainability of tropical dairy cattle farming in Oaxaca, Mexico Oaxaca
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Martínez, Verónica Rosales

; Valente, Ángel de Jesús Bautista

; Estrada, Urfila Victoria Peláez

; Lagarda, José Luis Valenzuela

; González, Beatriz Herrera

; Saguilán, Pedro Cisneros

Ciência Rural

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2023, Volume 53 N. 11 elocation e20210026

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

RESUMO: A pecuária leiteira tropical é uma das atividades econômicas mais relevantes para a produção de alimentos, embora atualmente enfrente crescente discussão da sociedade devido ao seu potencial dano aos recursos naturais e ao meio ambiente. Além disso, alguns fatores são primordiais para a avaliação da sustentabilidade e potencial produtivo de qualquer popriedade leiteira tropical: qualidade do solo, rentabilidade e eficiência energética. O objetivo deste estudo foi realizar uma análise de sustentabilidade em quatro tipos de propriedades de gado leiteiro tropical, por meio de três indicadores chave (rentabilidade econômica, eficiência energética e qualidade do solo) e com uma abordagem abrangente na região da Costa de Oaxaca, México. Portanto, quarto propriedades de diferentes tamanhos (isto é, pequenas, médias, grandes e muito grandes) foram selecionadas na Costa de Oaxaca, México. A coleta de dados foi realizada para a produção diária de leite, a dinâmica dos insumos da fazenda (introdução ou retirada) do sistema de produção, juntamente com coleta de amostras de solo. Os agroecossistemas avaliados foram economicamente rentáveis, sendo que aqueles com maior intensificação de suas áreas de pastagens apresentam maiores margens de lucro e eficiência energética. Em termos de qualidade do solo, existe um potencial regular para a sua utilização racional. RESUMO alimentos ambiente disso solo econômica Oaxaca México Portanto isto pequenas médias leite introdução retirada rentáveis racional

ABSTRACT: Tropical dairy cattle farming is one the most relevant economic activities for food production; although, currently faces increasing scrutiny from society due to its potential harm to natural resources and the environment. Moreover, some factors are paramount for the evaluation of the sustainability and productive potential of any given tropical dairy farm: soil quality, profitability, and energy efficiency. This study carried out a sustainability analysis in four types of tropical dairy cattle ranches, through three key indicators (economic profitability, energy efficiency and soil quality) and with a comprehensive approach in the Costa region of Oaxaca, Mexico. Therefore, four farms of different sizes (i.e., small, medium, large, and very large) were selected in Costa de Oaxaca, Mexico. The data collection was carried out for daily milk production, the dynamics of farm inputs (introduction or removal) from the production system, alongside with collection of soil samples. The agroecosystems evaluated were economically profitable, and those with greater intensification of their pasture areas display higher profit margins and energy efficiency. In terms of soil quality, there is a regular potential for its rational utilization. ABSTRACT although environment Moreover quality profitability ranches Oaxaca Mexico Therefore i.e., ie i e (i.e. small medium large introduction removal system samples profitable utilization i.e. (i.e i.e

https://doi.org/10.1590/0103-8478cr20210026

Rinite não alérgica
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Varandas, Cláudia

; Valente, Cristina

; Martins-dos-Santos, Gonçalo

; Sangalho, Inês

; Marques, Maria Luís

; Rama, Tiago Azenha

; Pereira, Ana Margarida

Revista Portuguesa de Imunoalergologia

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dec 2022, Volume 30 N. 4 Pages 299 - 309

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

ABSTRACT Non-allergic rhinitis is an inflammatory disorder of the nasal mucosa characterized by the absence of signs of sensitization to inhalant allergens. It includes different subphenotypes, such as vasomotor rhinitis (the most frequent), senile rhinitis, drug-induced rhinitis, gustatory rhinitis, hormonal rhinitis, and atrophic rhinitis. Its pathophysiology is heterogeneous and, despite being a frequent entity, the lack of specific complementary diagnostic tests makes its diagnosis difficult. Its treatment is based on the predominant symptomatology. The aim of this article is to gather current scientific evidence on non-allergic rhinitis, in what concerns its phenotypes, pathophysiology, diagnosis and appropriate management, using clinical vignettes as a starting point.

RESUMO A rinite não alérgica é uma patologia inflamatória da mucosa nasal caracterizada pela ausência de evidência de sensibilização a aeroalergénios. Engloba um conjunto de subfenótipos de rinite, como a rinite vasomotora (o subfenótipo mais frequente), rinite senil, rinite induzida por fármacos, rinite gustativa, rinite hormonal e rinite atrófica. A sua fisiopatologia é heterogénea e, apesar de se tratar de uma entidade frequente, a inexistência de meios complementares de diagnóstico específicos dificultam o seu diagnóstico. O tratamento é feito de acordo com a sintomatologia predominante. Este artigo tem como objetivo reunir a atual evidência científica relativa à rinite não alérgica no que se refere aos vários subtipos, fisiopatologia, diagnóstico e adequada abordagem terapêutica, usando casos clínicos para contextualização do problema.

https://doi.org/10.32932/rpia.2022.12.094

Fenología reproductiva de árboles en una zona montañosa del occidente de México
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Zárate Cuevas, Lizbeth

; Núñez López, Nora M.

; Cuevas Guzmán, Ramón

; Morales Arias, José Guadalupe

; Sánchez Rodríguez, Enrique Valente

; Guzmán Hernández, Luis

; Solís Magallanes, José Arturo

Revista mexicana de ciencias forestales

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feb 2022, Volume 13 N. 69 Pages 155 - 176

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

Abstract Knowledge of the flowering and fruiting patterns of tree species is important, given their relationship with pollinators and dispersers and because they are indicative of the best dates for collecting flowers and fruits for taxonomic and reproductive purposes. Therefore, the flowering and fruiting patterns of the tree species of the Las Joyas Scientific Station and adjacent areas in the Sierra of Manantlán in the state of Jalisco were analyzed, and their correlation with precipitation, temperature, insolation, relative humidity and evaporation was researched. Herbarium specimens with flowers and fruits collected from 1985 and deposited in the ZEA Herbarium of the University of Guadalajara were reviewed. The descriptive statistics of the data were performed using histograms. One way variance analysis was performed in search of differences between flowering and fruiting periods and Pearson's correlations in order to determine the relationships between flowering and fruiting and environmental variables. The highest richness of flowering and fruiting species was found to occur during the dry season of the year. The type of vegetation that registered the most species was the cloud forest, a plant community whose flowering and fruiting pattern conforms to the general pattern of all taxa. The richness of flowering and fruiting tree species exhibited a negative and significant correlation with relative humidity and precipitation, the most important environmental variables.

Resumen El conocimiento de los patrones de floración y fructificación de las especies arbóreas es de importancia por la relación que presentan con polinizadores, dispersores y su contribución para conocer las mejores fechas de recolecta de flores y frutos con propósitos taxonómicos y reproductivos. Por lo anterior, se analizaron los patrones de floración y fructificación de las especies arbóreas de la Estación Científica Las Joyas y áreas aledañas en la sierra de Manantlán en el estado de Jalisco; y se indagó su correlación con la precipitación, temperatura, insolación, humedad relativa y evaporación. Se revisaron ejemplares de herbario con flores y frutos recolectados a partir de 1985 que forman parte del acervo del Herbario ZEA de la Universidad de Guadalajara. Se realizó la estadística descriptiva de los datos mediante histogramas; además se hicieron análisis de varianza de una vía en busca de diferencias entre los períodos de floración y fructificación, y correlaciones de Pearson para determinar las relaciones entre la floración y fructificación con las variables ambientales. Se registró que la mayor riqueza de especies en floración y fructificación se presentó en la estación seca del año. El tipo de vegetación con más especies fue el bosque mesófilo de montaña y el patrón de floración y fructificación en esta comunidad vegetal se ajustó al patrón general de todos los taxones. La riqueza de especies arbóreas en floración y fructificación tuvo correlación negativa y significativa con la humedad relativa y la precipitación, las variables ambientales de mayor importancia.

https://doi.org/10.29298/rmcf.v13i69.1176 22 downloads

Clinical, radiological, and transbronchial biopsy findings in patients with long COVID-19: a case series
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Baldi, Bruno Guedes

; Fabro, Alexandre Todorovic

; Franco, Andreia Craveiro

; Machado, Marília Helena C

; Prudente, Robson Aparecido

; Franco, Estefânia Thomé

; Marrone, Sergio Ribeiro

; Vale, Simone Alves do

; Cezare, Talita Jacon

; Moraes, Marcelo Padovani de Toledo

; Ferreira, Eloara Vieira Machado

; Albuquerque, André Luis Pereira

; Sawamura, Marcio Valente Yamada

; Tanni, Suzana Erico

Jornal Brasileiro de Pneumologia

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2022, Volume 48 N. 3 elocation e20210438

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

RESUMO Esta comunicação breve demonstra a correlação de sintomas respiratórios persistentes com achados funcionais, tomográficos e de biópsia pulmonar transbrônquica em pacientes com COVID-19 que tiveram um longo período de acompanhamento. Relatamos uma série de seis pacientes com COVID-19 com acometimento pulmonar que apresentavam dispneia persistente após 4-15 meses da alta. Realizamos biópsias transbrônquicas, e o padrão histopatológico consistentemente demonstrou remodelação peribrônquica com fibrose pulmonar intersticial. Portanto, a biópsia pulmonar pode ser útil na abordagem de pacientes com COVID-19 prolongada, embora o tipo de procedimento, suas indicações precisas e o momento de sua realização ainda não estejam esclarecidos. (Registro Brasileiro de Ensaios Clínicos - ReBEC; número de identificação: RBR-8j9kqy [http://www.ensaiosclinicos.gov.br])

ABSTRACT This brief communication demonstrates the correlation of persistent respiratory symptoms with functional, tomographic, and transbronchial pulmonary biopsy findings in patients with COVID-19 who had a long follow-up period. We report a series of six COVID-19 patients with pulmonary involvement who presented with persistent dyspnea within 4-15 months of discharge. We performed transbronchial biopsies, and the histopathological pattern consistently demonstrated peribronchial remodeling with interstitial pulmonary fibrosis. Therefore, lung biopsy may be useful in the approach of patients with long COVID-19, although the type of procedure, its precise indication, and the moment to perform it are yet to be clarified. (Brazilian Registry of Clinical Trials-ReBEC; identifier: RBR-8j9kqy [http://www.ensaiosclinicos.gov.br])

https://doi.org/10.36416/1806-3756/e20210438

Meningitis caused by Capnocytophaga canimorsus in a COVID-19 patient: a rare complication of dog bites
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Farias, Luís Arthur Brasil Gadelha

; Stolp, Ângela Maria Veras

; Bandeira, Silviane Praciano

; Mesquita, Rafael Ferreira

; Bessa, Pedro Pinheiro de Negreiros

; Holanda, Pablo Eliack Linhares de

; Costa, Silvia Figueiredo

; Takeda, Christianne Fernandes Valente

; Perdigão Neto, Lauro Vieira

Revista do Instituto de Medicina Tropical de São Paulo

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2022, Volume 64 elocation e33

Abstract: En | Text: En | PDF: En

ABSTRACT Capnocytophaga canimorsus is a gram-negative rod that is part of the commensal microbiota of dogs’ and cats’ mouths. In this case, we report an 85-year-old man with COVID-19 who had his right arm bitten by a dog. His symptoms were impaired consciousness, agitation and aggressive behavior. Physical examination revealed neck stiffness and Brudzinski’s sign. The cerebrospinal fluid culture was compatible with Capnocytophaga canimorsus. He required intensive care and received a 14-day prescription of meropenem. After 40 days of hospitalization, the patient was fully recovered and was discharged. This case highlights the importance of physician and microbiologist be awareness of this disease, mainly in patients with neurological symptoms after a dog or cat bite.

https://doi.org/10.1590/s1678-9946202264033

Use of aerobic treadmill exercises on nerve regeneration after sciatic nerve injury in spontaneously hypertensive rats
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Figueiredo, Gustavo Santiago de Lima

; Fernandes, Marcela

; Atti, Vinícius Neves

; Valente, Sandra Gomes

; Roth, Felipe

; Nakachima, Luis Renato

; Santos, João Baptista Gomes dos

; Fernandes, Carlos Henrique

Acta Cirúrgica Brasileira

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2022, Volume 37 N. 8 elocation e370804

Abstract: En | Text: En | PDF: En

ABSTRACT Purpose: Various postoperative protocols have been proposed to improve outcomes and accelerate nerve regeneration. Recently, the use of physical exercise in a post-surgical neurorraphy procedure has shown good results when started early. We experimentally investigated the hypothesis that post-operative exercise speeds up results and improves clinical and morphologic parameters. Methods: Isogenic rats were randomly divided into four groups: 1 SHAM; 2 SHAM submitted to the exercise protocol (EP); 3 Grafting of the sciatic nerve; and 4 Grafting of the sciatic nerve associated with the EP. The EP was based on aerobic activities with a treadmill, with a progressive increase in time and intensity during 6 weeks. The results were evaluated by the sciatic functional index (SFI), morphometric and morphologic analysis of nerve distal to the lesion, and the number of spinal cord motor neurons, positive to the marker Fluoro-Gold (FG), captured retrogradely through neurorraphy. Results: Functional analysis (SFI) did not show a statistical difference between the group grafted with (–50.94) and without exercise (-65.79) after 90 days. The motoneurons count (Spinal cord histology) also showed no diference between these groups (834.5 × 833 respectively). Although functionally there is no difference between these groups, morphometric study showed a greater density (53.62) and larger fibers (7.762) in GRAFT group. When comparing both operated groups with both SHAM groups, all values were much lower. Conclusions: The experimental model that this aerobic treadmill exercises protocol did not modify nerve regeneration after sciatic nerve injury and repair with nerve graft.

https://doi.org/10.1590/acb370804

Vulnerabilidad turística en sitios de la región Huasteca, San Luis Potosí, México, como resultado de la variabilidad climática
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García García, Ana Mónica de Jhesú

; Vázquez Solís, Valente

Revista de geografía Norte Grande

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2022, N. 83 Pages 331 - 352

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

Resumen: En los últimos años, la variabilidad climática ha afectado el comportamiento de numerosos sectores económicos, entre ellos el turismo. Esta condición es primordial para México, país que basa parte significativa de sus ingresos en las cadenas de valor agregado motivadas por la visita a espacios turísticos naturales donde ocurren un creciente número amenazas asociadas con la variabilidad climática. Tal es el caso de la Huasteca Potosina, región donde el aumento de temperatura modifica la regularidad de fenómenos hidrometeorológicos y sus impactos potenciales se desconocen. El trabajo consta de tres apartados; primero se discuten los fundamentos de la variabilidad climática y la relación que guarda con el turismo de la naturaleza, posteriormente, se obtuvo una línea base climática para determinar las anomalías ocurridas de 1990 a 2014, se seleccionaron indicadores para determinar el grado de exposición, sensibilidad y resiliencia, y se obtuvo un índice de vulnerabilidad climática para los 27 atractivos turísticos seleccionados; por último, se proyectan las implicaciones futuras que la actividad plantea. Se concluye que para los próximos años existirán condiciones climáticas extremas observables en el incremento de temperatura, la reducción de la estética paisajística de los sitios, del confort de los visitantes, así como la contracción del sector.

Abstract: In recent years, climate variability has affected the performance of many economic sectors, including tourism. This condition is fundamental for Mexico, a country that bases a significant part of its income on the value-added chains motivated by the visit to natural tourist areas where an increasing number of threats associated with climate variability occur. Such is the case of the Huasteca Potosina, a region where the increase in temperature modifies the regularity of hydrometeorological phenomena and its potential impacts are unknown. The work consists of three sections; first, the fundamentals of climate variability and its relationship with nature tourism are discussed, then a climate baseline is obtained to determine the anomalies that occurred from 1990 to 2014, indicators are selected to determine the degree of exposure, sensitivity and resilience, and a climate vulnerability index is obtained for the 27 selected tourist attractions; finally, the future implications of the activity are projected. It is concluded that in the coming years there will be extreme climatic conditions that can be observed in the increase of temperature, the reduction of the landscape aesthetics of the sites, the comfort of the visitors, as well as the contraction of the sector.

10.

Assessment of a vaquejada horse training protocol based on laboratory clinical parameters
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Melo, Daniel Ânderson de Souza

; Santiago, Juliano Martins

; Lucena, Jorge Eduardo Cavalcante

; Costa, Luís Artur Cordeiro

; Ribeiro, Ana Clara Sarzedas

; Silva, Andreza Correia da

; Gonzaga, Iaçanã Valente Ferreira

Revista Brasileira de Zootecnia

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2022, Volume 51 elocation e20210111

Abstract: En | Text: En | PDF: En

ABSTRACT The objective of this study was to assess a training protocol employed in the Brazilian Northeast region for fitness conditioning of vaquejada horses. For 12 months, 24 Quarter Horses were evaluated under a completely randomized split-plot experimental design in which the plots comprised three age groups: horses at two, three, and four years of age. The split plots were made up of six fitness tests carried out every other month. The fitness test protocol consisted of five levels of protocol exercises on a standard vaquejada track. Prior to the tests with fasted animals, we collected blood samples to determine muscle enzymes (aspartate aminotransferase, creatine kinase, and lactate dehydrogenase). During the tests, heart rate, speed, and distance run were recorded using a heart rate monitor. Next, the results were used to calculate speed at which each horse reached 150 bpm (V150), speed at which each horse reached 200 bpm (V200), maximum heart rate (HRmax), maximum speed (Vmax), recovery time needed for the heart rate of horses to return to half the maximum value reached during the fitness tests (HR50%), and recovery time needed for the heart rate of horses to return to baseline values (HRbasal). No difference was found among the age groups for V150, HRmax, Vmax, HR50%, HRbasal, or muscle enzymes. By the final stage of training, the V200 of the three-year-old horses was higher than that of the four-year-old foals. During training, all groups exhibited increases in serum concentrations of muscle enzymes and reductions in efficiency to recover heart rate after exercise. The training protocol assessed is unable to maintain proper fitness for competitions throughout the year.

https://doi.org/10.37496/rbz5120210111

11.

Polyphenol Profile and Quantitative Assessment of the Flavonoid Kaempferitrin in Wild and Cultivated Brazilian Amazonian Uncaria guianensis (Rubiaceae)
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Paixão, Djavan da

; Barboza, Rodolfo S.

; Valente, Ligia M. M.

; Souza, Matheus O.

; Siani, Antonio C.

; Pereira, Rita C. A.

; Gallo, Blanca

; Berrueta, Luis A.

Journal of the Brazilian Chemical Society

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aug 2021, Volume 32 N. 8 Pages 1670 - 1679

Abstract: En | Text: En | PDF: En

The Amazonian Rubiaceae species Uncaria guianensis (UG) is locally used as anti-inflammatory, antitumor, antidiabetic, anti-ulcers, and others. The phenolic content of its leaves is characterized by the great predominance of the flavonoid kaempferol-3,7-O-(α)-L-dirhamnoside (kaempferitrin). The present study quantitatively evaluates the kaempferitrin content in the leaves and branches of cultivated and wild UG specimens collected in different locations of the Brazilian Amazon rainforest by employing high-performance liquid chromatography coupled to a diode array detector (HPLC-DAD). Besides, the understanding of the polyphenol profile performed by electron spray ionization is deepened by tandem mass spectrometry analysis (ESI-MS/MS), using a previously approached leaf UG extract, and the flavonoid quercetin-3,7-O-(α)-L-dirhamnoside was first isolated from UG. All samples showed quite similar qualitative polyphenol profiles. Kaempferitrin in UG ranged from 1.1 to 1.9 mg 100 mg-1 for dry leaves of adult wild plants, 0.3 to 0.7 mg 100 mg-1 for dry leaves of cultivated young plants and 0.00 to 0.04 mg 100 mg-1 for dry branches of adult wild plants. Besides suggesting the distribution of kaempferitrin in the species, these results reinforce this flavonol as a suitable chemical marker for UG leaves and the products derived from them.

https://doi.org/10.21577/0103-5053.20210064 82 downloads

12.

Diretriz Brasileira de Cardio-oncologia – 2020
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Hajjar, Ludhmila Abrahão

; Costa, Isabela Bispo Santos da Silva da

; Lopes, Marcelo Antônio Cartaxo Queiroga

; Hoff, Paulo Marcelo Gehm

; Diz, Maria Del Pilar Estevez

; Fonseca, Silvia Moulin Ribeiro

; Bittar, Cristina Salvadori

; Rehder, Marília Harumi Higuchi dos Santos

; Rizk, Stephanie Itala

; Almeida, Dirceu Rodrigues

; Fernandes, Gustavo dos Santos

; Beck-da-Silva, Luís

; Campos, Carlos Augusto Homem de Magalhães

; Montera, Marcelo Westerlund

; Alves, Sílvia Marinho Martins

; Fukushima, Júlia Tizue

; Santos, Maria Verônica Câmara dos

; Negrão, Carlos Eduardo

; Silva, Thiago Liguori Feliciano da

; Ferreira, Silvia Moreira Ayub

; Malachias, Marcus Vinicius Bolivar

; Moreira, Maria da Consolação Vieira

; Valente Neto, Manuel Maria Ramos

; Fonseca, Veronica Cristina Quiroga

; Soeiro, Maria Carolina Feres de Almeida

; Alves, Juliana Barbosa Sobral

; Silva, Carolina Maria Pinto Domingues Carvalho

; Sbano, João

; Pavanello, Ricardo

; Pinto, Ibraim Masciarelli F.

; Simão, Antônio Felipe

; Dracoulakis, Marianna Deway Andrade

; Hoff, Ana Oliveira

; Assunção, Bruna Morhy Borges Leal

; Novis, Yana

; Testa, Laura

; Alencar Filho, Aristóteles Comte de

; Cruz, Cecília Beatriz Bittencourt Viana

; Pereira, Juliana

; Garcia, Diego Ribeiro

; Nomura, Cesar Higa

; Rochitte, Carlos Eduardo

; Macedo, Ariane Vieira Scarlatelli

; Marcatti, Patricia Tavares Felipe

; Mathias Junior, Wilson

; Wiermann, Evanius Garcia

; Val, Renata do

; Freitas, Helano

; Coutinho, Anelisa

; Mathias, Clarissa Maria de Cerqueira

; Vieira, Fernando Meton de Alencar Camara

; Sasse, André Deeke

; Rocha, Vanderson

; Ramires, José Antônio Franchini

; Kalil Filho, Roberto

Arquivos Brasileiros de Cardiologia

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nov 2020, Volume 115 N. 5 Pages 1006 - 1043

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

https://doi.org/10.36660/abc.20201006 4180 downloads

13.

Corrosion Protection of Steel by Volatile Corrosion Inhibitors: Vapor Analysis by Gas-Diffusion Microextraction and Mass Loss and Electrochemical Impedance in NaCl Deliquescence Tests
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Valente Jr., Marco A. G.

; Gonçalves, Luís M.

; Passaretti Filho, Juliano

; Cardoso, Arnaldo A.

; Rodrigues, José A.

; Fugivara, Cecilio S.

; Benedetti, Assis V.

Journal of the Brazilian Chemical Society

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oct 2020, Volume 31 N. 10 Pages 2038 - 2048

Abstract: En | Text: En | PDF: En

A new methodology using gas-diffusion microextraction (GDME) was developed for the analysis of volatile corrosion inhibitors (VCIs). The evaluation of the inhibition efficiency and corrosion rate (ν) was performed by NaCl deliquescence tests and correlated with measurements of polarization resistance (Rp) obtained from electrochemical impedance spectroscopy (EIS) analysis and with the pH resulting from the atmosphere of the inhibitor (pHGDME). The correlation obtained between n and pHGDME indicates that the higher the value of pHGDME the lower the corrosion rate. The Raman spectra of steel was used to monitor in situ adsorption of VCI and the surface modifications caused by the inhibitors. The scanning electron microscopy (SEM) images corroborate the data of ν, both indicating that the cyclohexylamine vapor showed the best corrosion resistance performance.

https://doi.org/10.21577/0103-5053.20200104 529 downloads

14.

One-Step Isolation of Monoterpene Indole Alkaloids from Psychotria leiocarpa Leaves and Their Antiviral Activity on Dengue Virus Type-2
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Costa, Jéssica O.

; Barboza, Rodolfo S.

; Valente, Ligia M. M.

; Wolff, Thiago

; Gomes, Mário

; Gallo, Blanca

; Berrueta, Luis A.

; Guimarães-Andrade, Iris P.

; Gavino-Leopoldino, Daniel

; Assunção-Miranda, Iranaia

Journal of the Brazilian Chemical Society

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oct 2020, Volume 31 N. 10 Pages 2104 - 2113

Abstract: En | Text: En | PDF: En

The leaf MeOH extract of Psychotria leiocarpa (Rubiaceae) showed in vitro non-cytotoxic and anti-dengue virus serotype 2 (DENV2) activity in human hepatocarcinoma cell lineage (HepG2). A one-step and cost-effective reversed-phase solid-phase extraction method based on high-performance liquid chromatography (HPLC) parameters allowed the isolation, directly from this bioactive extract, of the monoterpene indole alkaloids: N-glucopyranosyl vincosamide (1), vincosamide (2) and strictosidinic acid (3). The chemical structures were characterized based on 1D and 2D nuclear magnetic resonance (NMR), UV and high-resolution mass spectra (HRMS). The methodology has also allowed yielding a polyphenolic-rich fraction that was analyzed by high-performance liquid chromatography coupled to diode array detection and electrospray ionization tandem mass spectrometry (HPLC-DAD-ESI-MS/MS) revealing two flavonol triglycosides (4, 5) and three caffeoylquinic acid isomers (6-8). Compound 3 is reported for the first time in P. leiocarpa and all the phenolic compounds (4-8) are described for the first time in the genus Psychotria. Compounds 1-3 showed to be non-cytotoxic and anti-dengue active towards DENV2, highlighting vincosamide (2).

https://doi.org/10.21577/0103-5053.20200111 327 downloads

15.

Pneumonia por Chlamydia psittaci: Um Caso Clínico
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Castro, José Luís

; Xavier, Filipa Castro

; Valente, Joana

; Rodrigues, Marina

; Rollo, Ana Castro

Gazeta Médica

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sep 2020, Volume 7 N. 3 Pages 282 - 285

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

Resumo A psitacose, também conhecida como ornitose, é geralmente uma doença com manifestações sistémicas proeminentes e alguns sintomas respiratórios, causada por Chlamydia psittaci. Os pássaros psitacinos são o principal reservatório e meio de transmissão da doença para os humanos. Descreve-se o caso clínico de uma doente de 50 anos, trabalhadora num armazém agro-avícola, que foi observada três vezes em contexto de urgência por quadro de dispneia, tosse seca, toracalgia, cansaço generalizado e febre. Relata-se o seu percurso e evolução até ao diagnóstico de pneumonia a Chlamydia psittaci. Este relato de caso reforça a importância de realizar sempre uma adequada anamnese, revelando-se preponderante para o sucesso diagnóstico e terapêutica dirigida.

Abstract Psittacosis, also known as ornithosis, is a condition, caused by Chlamydia psittaci, which usually causes both prominente systemic manifestations and respiratory symptoms. This condition is transmitted to the vast majority of humans by psitaciformes birds. In this article, we describe a clinical case of a 50-year-old patient, working in an agro-poultry warehouse, who was observed three times due to dyspnea, dry cough, chest pain, general tiredness and fever. Only after she have been submitted to additional tests, the diagnosis of pneumonia to Chlamydia psittaci was revealed. With this case we aim to stress the fundamental role played by an adequate anamnesis and her importance for a successful diagnosis and concomitant targeted therapy.

https://doi.org/10.29315/gm.v7i3.314 43 downloads

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