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This study explores the potential of graphene oxide (GO) as an additive in waterborne polyurethane (WPU) resins to create eco-friendly coatings with enhanced anticorrosive properties. Traditionally, WPU's hydrophilic nature has limited its use in corrosion-resistant coatings. We investigate the impact of incorporating various GO concentrations (0.01, 0.1, and 1.3 wt%) and functionalizing GO with ethylenediamine (EDA) on the development of anticorrosive coatings for carbon steel. It was observed, by potentiodynamic polarization analysis in a 3.5% NaCl solution, that the low GO content in the WPU matrix significantly improved anticorrosion properties, with the 0.01 wt% GO-EDA formulation showing exceptional performance, high Ecorr (-117.82 mV), low icorr (3.70 × 10-9 A cm-2), and an inhibition corrosion efficiency (η) of 99.60%. Raman imaging mappings revealed that excessive GO content led to agglomeration, creating pathways for corrosive species. In UV/condensation tests, the 0.01 wt% GO-EDA coating exhibited the most promising results, with minimal corrosion products compared to pristine WPU. The large lateral dimensions of GO sheets and the cross-linking facilitated by EDA enhanced the interfacial properties and dispersion within the WPU matrix, resulting in superior barrier properties and anticorrosion performance. This advancement underscores the potential of GO-based coatings for environmentally friendly corrosion protection.
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Cardiovascular disease is one of the leading causes of mortality worldwide, primarily driven by atherosclerosis, a chronic inflammatory condition contributing significantly to fatalities. Various biological determinants affecting cardiovascular health across different age and sex groups have been identified. In this context, recent attention has focused on the potential therapeutic and preventive role of increasing circulating levels of heat shock protein 27 (plasma HSP27) in combating atherosclerosis. Plasma HSP27 is recognized for its protective function in inflammatory atherogenesis, offering promising avenues for intervention and management strategies against this prevalent cardiovascular ailment. Exercise has emerged as a pivotal strategy in preventing and managing cardiovascular disease, with literature indicating an increase in plasma HSP27 levels post-exercise. However, there is limited understanding of the impact of exercise on the release of HSP27 into circulation. Clarifying these aspects is crucial for understanding the role of exercise in modulating plasma HSP27 levels and its potential implications for cardiovascular health across diverse populations. Therefore, this review aims to establish a more comprehensive understanding of the relationship between plasma HSP27 and exercise.
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In the context of biorefinery, researchers have been looking for lignocellulosic biomasses and ideal treatments to produce economically viable biofuels. In this scenario, the bamboo culm appears as a plant matrix of great potential, given the high cellulose content of low crystallinity. Thus, the objective and differential of this work was to determine the best conditions for enzymatic hydrolysis of cellulose extracted from bamboo culm and to evaluate its potential application in the production of bioethanol through Separate Hydrolysis and Fermentation (SHF) and Saccharification and Simultaneous Fermentation (SSF) by Saccharomyces cerevisiae modified via CRISPR/Cas9. The average cellulose extraction yield was 41.87 % with an extraction efficiency of 86.76 %. In general, as the hydrolysis time increased, an increase in glucose production was observed in almost all assays, with higher hydrolysis efficiency values at 72 h. The results ranged from 2.09 to 19.8 g/L of glucose obtained with efficiency values of 10.47 to 99 %. The best conditions were found in test 5 (temperature of 36 °C and pH 5.0, with only 10 FPU/g of substrate Cellic Ctec2 Novozymes ® cocktail). It is observed that for all hydrolysis times the independent variables pH and temperature were significant under the hydrolysis efficiency, showing a negative effect, indicating that higher values of the same promote lower values of the response variable. For bioethanol production, a maximum concentration of 7.84 g/L was observed for the SSH process after 4 h of fermentation, while for the SSF process it was 12.6 g/L after 24 h of fermentation, indicating the large potential of the simultaneous process together with the application of bamboo culm biomass for high production of biofuel.
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Biocombustibles , Sistemas CRISPR-Cas , Celulosa , Etanol , Fermentación , Saccharomyces cerevisiae , Saccharomyces cerevisiae/metabolismo , Saccharomyces cerevisiae/genética , Hidrólisis , Celulosa/metabolismo , Etanol/metabolismo , Celulasa/metabolismo , Sasa , Glucosa/metabolismo , Concentración de Iones de Hidrógeno , BiomasaRESUMEN
The hydrothermal pretreatment process stands out as a pivotal step in breaking down the hemicellulosic fraction of lignocellulosic biomasses, such as sugarcane bagasse and eucalyptus sawdust. This pretreatment step is crucial for preparing these materials for subsequent processes, particularly in food applications. This technique aims to disintegrate plant wall components like cellulose, hemicellulose, and lignin, and facilitating access in later phases such as enzymatic hydrolysis, and ultimately making fermentable sugars available. In this study, sugarcane bagasse and eucalyptus sawdust biomass underwent hydrothermal pretreatment at specific conditions, yielding two key components: dry biomass and hemicellulose liquor. The primary focus was to assess the impact of hydrothermal pretreatment followed by enzymatic hydrolysis, using the Celic Ctec III enzyme cocktail, to obtain fermentable sugars. These sugars were then transformed into membranes via strain Gluconacetobacter xylinus bacterial biosynthesis. Notably, the addition of a nitrogen source significantly boosted production to 14.76 g/ in hydrolyzed sugarcane bagasse, underscoring its vital role in bacterial metabolism. Conversely, in hydrolyzed eucalyptus, nitrogen source inclusion unexpectedly decreased yield, highlighting the intricate interactions in fermentation media and the pivotal influence of nitrogen supplementation. Characterization of membranes obtained in synthetic and hydrolyzed media through techniques such as FEG-SEM, FTIR, and TGA, followed by mass balance assessment, gauged their viability on an industrial scale. This comprehensive study aimed not only to understand the effects of pretreatment and enzymatic hydrolysis but to also evaluate the applicability and sustainability of the process on a large scale, providing crucial insights into its feasibility and efficiency in practical food-related scenarios, utilizing nanocellulose bacterial (BNC) as a key component.
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Biomasa , Celulosa , Eucalyptus , Lignina , Saccharum , Lignina/química , Lignina/metabolismo , Celulosa/química , Celulosa/metabolismo , Hidrólisis , Eucalyptus/química , Saccharum/química , Fermentación , Gluconacetobacter xylinus/metabolismo , Polisacáridos/química , Polisacáridos/metabolismoRESUMEN
Methane conversion to valuable chemicals is a highly challenging and desirable reaction. Photocatalysis is a clean pathway to drive this chemical reaction, avoiding the high temperature and pressure of the syngas process. Titanium dioxide, being the most used photocatalyst, presents challenges in controlling the oxidation process, which is believed to depend on the metal sites on its surface that function as heterojunctions. Herein, we supported different metals on TiO2 and evaluated their activity in methane photooxidation reactions. We showed that Ni-TiO2 is the best photocatalyst for selective methane conversion, producing impressively high amounts of methanol (1.600 µmol·g-1) using H2O2 as an oxidant, with minimal CO2 evolution. This performance is attributed to the high efficiency of nickel species to produce hydroxyl radicals and enhance H2O2 utilization as well as to induce carrier traps (Ti3+ and SETOVs sites) on TiO2, which are crucial for C-H activation. This study sheds light on the role of catalyst structure in the proper control of CH4 photoconversion.
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Changes to forests due to deforestation, or their replacement by agricultural areas, alter evapotranspiration and the partitioning of available energy. This study investigated seasonal variations in the energy balance and evapotranspiration in landscapes under different levels of anthropogenic intervention in the semi-arid region of Brazil. Micrometeorological data was obtained from September 2020 to October 2022 for three areas of the semi-arid region: preserved Caatinga (CAA, native vegetation), Caatinga under regeneration (REGE) and a deforested area (DEFA). Here, we use the Bowen ratio energy balance method. Measurements were taken of global solar radiation, air temperature, relative humidity, vapour pressure deficit, rainfall, net radiation, latent heat flux, sensible heat flux, soil heat flux, evapotranspiration, volumetric soil water content and Normalised Difference Vegetation Index. Sensible heat flux was the dominant flux in both areas with 66% for preserved Caatinga vegetation, 63% for Caatinga under regeneration and 62% deforested area. The latent heat flux was equivalent to 28% of the net radiation for preserved Caatinga vegetation, Caatinga under regeneration and deforested area. The evapotranspiration in turn responded as a function of water availability, being higher during the rainy seasons, with average values of 1.82 mm day-1 for preserved Caatinga vegetation, 2.26 mm day-1 for Caatinga under regeneration and 1.25 mm day-1 for deforested area. The Bowen ratio presented values > 1 in deforested area, preserved Caatinga vegetation and Caatinga under regeneration. Thus, it can be concluded that the change in land use alters the energy balance components, promoting reductions in available energy and latent and sensible heat fluxes during the rainy-dry transition in the deforested area. In addition, the seasonality of energy fluxes depends on water availability in the environment.
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Estaciones del Año , Brasil , Conservación de los Recursos Naturales , Bosques , Agricultura , Suelo/química , Temperatura , Transpiración de PlantasRESUMEN
The research addresses zoonotic sporotrichosis in Brazil, particularly caused by Sporothrix brasiliensis, highlighting its epidemiological severity. Transmission occurs through contact with sick animals, especially felines, and diagnosis in humans is challenging due to the low fungal load in the lesions. The study analyzed data from Information System for Notifiable Diseases (SINAN) and Zoonosis Surveillance Unit (UVZ) from January 2017 to March 2023, carried out in Contagem, Minas Gerais. Geospatial tools and statistical analysis revealed a significant increase in cases, peaking in 2021 for felines and 2022 for humans. The geospatial analysis highlighted areas of higher incidence, suggesting a correlation between human and feline populations. The research contributes to the understanding of sporotrichosis in Contagem, emphasizing the importance of integrated approaches for surveillance and control strategies, aiming to mitigate impacts on the local community.
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Enfermedades de los Gatos , Esporotricosis , Zoonosis , Gatos , Animales , Esporotricosis/veterinaria , Esporotricosis/epidemiología , Esporotricosis/microbiología , Enfermedades de los Gatos/epidemiología , Enfermedades de los Gatos/microbiología , Brasil/epidemiología , Zoonosis/epidemiología , Humanos , Incidencia , Análisis Espacio-Temporal , SporothrixRESUMEN
In 2024, the Brazilian government promulgated a decree with new guidelines for the basic food basket, based on the Brazilian Dietary Guidelines. This study describes the acquisition of foods that make up the new basic basket by low-income families in Brazil, using data from the latest edition of the Household Budget Survey, conducted in 2017-18. The household food acquisitions of families with a per capita income of up to half a minimum wage were analyzed, both for the country as a whole and according to housing situation, region of the country, and race/skin color of the head of the family (n=13,706 households). The foods that make up the basket, identified according to Ordinance 966 of the Ministry of Social Development, represented 84.1% of the total calories acquired by low-income households. The food groups with the highest contributions to total calories were cereals (33.4%), sugars and oils/fats (21.3%), and meats and eggs (11.5%). Rice, corn and other grains, and beans represented 19.6% and 4.6% of total calories, respectively. Poultry and beef were the most consumed meats, representing 4.9% and 4.0% of the calories. Fruits contributed to 1.9%, and vegetables and greens to 0.7%. The caloric share of foods that make up the new basic basket was higher in rural areas (88.0%) and in the North (88.2%) and Northeast (85.9%) regions. There were no significant differences between race/skin color categories. Our data show that, in 2017-18, the foods that make up the new basic basket were the foundation of the diet of the poorest population, reinforcing the cultural feasibility of its implementation and the need for policies that ensure continuous access to these foods.
Em 2024, o governo brasileiro promulgou um decreto com novas diretrizes para a cesta básica de alimentos, baseadas no Guia Alimentar para a População Brasileira. Este estudo descreve a aquisição dos alimentos que compõem a nova cesta básica por famílias de baixa renda no Brasil, utilizando dados da última edição da Pesquisa de Orçamentos Familiares, realizada em 2017-8. Foram analisadas as aquisições domiciliares de alimentos das famílias com renda per capita de até meio salário-mínimo, no país como um todo e segundo situação de moradia, região do País e raça/cor da pele do chefe da família (n=13.706 domicílios). Os alimentos que compõem a cesta, identificados conforme a Portaria 966 do Ministério do Desenvolvimento Social, representaram 84,1% do total de calorias adquiridas pelos domicílios de baixa renda. Os grupos alimentares com maiores contribuições para o total de calorias foram cereais (33,4%), açúcares e óleos/gorduras (21,3%), e carnes e ovos (11,5%). Arroz, milho e outros grãos e feijões contribuíram com 19,6% e 4,6% das calorias, respectivamente. Carnes de ave e de boi foram as mais consumidas, representando 4,9% e 4,0% das calorias. Frutas contribuíram com 1,9% e legumes e verduras com 0,7%. A participação calórica de alimentos da nova cesta básica foi maior na área rural (88,0%) e nas regiões Norte (88,2%) e Nordeste (85,9%). Não houve diferenças significativas entre as categorias de raça/cor da pele. Nossos dados mostram que, em 2017-8, os alimentos que compõem a nova cesta eram a base da alimentação da população mais pobre, reforçando a viabilidade cultural da sua implementação e a necessidade de políticas que garantam o acesso contínuo a esses alimentos.
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BACKGROUND: The intensity of dengue virus (DV) replication and circulating non-structural protein 1 (NS1) levels may promote changes in the human immune response and favor severe forms of infection. We investigated the correlations between NS1 with CXCL-8, CXCL-10, IFN-γ, and IL-12p40 serum levels, and IFN-γ receptor α chain (CD119) expression, and CXCL10 production by peripheral blood mononuclear cells (PBMCs) stimulated with recombinant IFN-γ in DV-infected patients with different clinical forms. METHODS: Dengue virus NS1, CXCL-8, CXCL-10, IFN-γ, and IL-12p40 serum levels were measured in 152 DV-infected patients with different clinical forms and 20 non-infected individuals (NI) using enzyme-linked immunosorbent assay (ELISA). In addition, we investigated the CXCL-10 production after in vitro IFN-γ stimulation of PBMCs from 48 DV-infected individuals (with different clinical forms of dengue fever) and 20 NI individuals using ELISA, and CD119 expression on CD14+ cells with flow cytometry. RESULTS: Patients with dengue hemorrhagic fever (DHF) had significantly higher NS1, CXCL-8, and CXCL-10 serum levels than those with classic dengue fever (DF). The response of PBMCs to IFN-γ stimulation was lower in patients with DHF than in those with DF or dengue with complications (DWC), with lower CD119 expression and reduced CXCL-10 synthesis. In addition, these alterations are associated with high NS1 serum levels. CONCLUSIONS: Patients with DHF reported high NS1 levels, low CD119 expression, and low CXCL-10 synthesis in PBMCs, which may be associated with infection progression and severity.
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Quimiocina CXCL10 , Ensayo de Inmunoadsorción Enzimática , Dengue Grave , Proteínas no Estructurales Virales , Humanos , Quimiocina CXCL10/sangre , Masculino , Dengue Grave/sangre , Dengue Grave/inmunología , Femenino , Adulto , Persona de Mediana Edad , Leucocitos Mononucleares/metabolismo , Estudios de Casos y Controles , Adulto Joven , Interferón gamma/sangre , Adolescente , Citometría de FlujoRESUMEN
This is a documentary, exploratory, descriptive study, which is part of a multicenter international study assessing the national health systems with a care model based on primary health care of Brazil, Spain, Italy, and Portugal, funded by the Brazilian National Research Council (CNPq, acronym in Portuguese). It aims to identify the basic health legislation, the right to health, and the doctrinal and organizational principles of each country with a focus on the impact of social determinants of health on the national health systems. The results showed these countries have similar legislation and doctrinal principles, with a constitutional right to health, based on primary health care, and with a care model of the family health type. The challenges identified were low birth rate and high life expectancy at birth in European countries and criteria for access to medication and care financing. Based on our findings, the countries with higher investment in a structural basis, ensuring more dignified, solid, and vigilant socioeconomic and sanitary conditions, provide an important differentiation in responsiveness and sustainability of the national health system and direct impact on the quality of life.
Trata-se de uma pesquisa documental, exploratória, descritiva, partindo de um estudo multicêntrico e internacional entre Brasil, Espanha, Itália e Portugal sobre sistemas nacionais de saúde com modelo de atenção baseado na atenção primária à saúde e financiado pelo Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) do Brasil. Tem como objetivo identificar as legislações de base da saúde, o direito à saúde e os princípios doutrinários e organizativos de cada país selecionado com ênfase no impacto dos determinantes sociais de saúde sobre os sistemas nacionais de saúde. Os resultados revelaram países com legislações e princípios doutrinários semelhantes, com direito à saúde constitucional, ancorados na atenção primária à saúde, e com modelo assistencial de acesso do tipo saúde da família. Os desafios encontrados foram a baixa natalidade e elevada expectativa de vida ao nascer em países europeus e critérios para acesso a medicamentos e financiamento assistencial. Com base nos nossos achados, os países que tiveram maior investimento em base estrutural, perpassando por assegurar condições socioeconômicas e sanitárias mais dignas, sólidas e vigilantes, garantiram importante diferenciação na capacidade de resposta e sustentabilidade do sistema nacional de saúde e no impacto direto na qualidade de vida das pessoas.
Se trata de una investigación documental, exploratoria, descriptiva, parte de un estudio multicéntrico, internacional entre Brasil, España, Italia y Portugal sobre los Sistemas Nacionales de Salud con un modelo de atención basado en la atención primaria de salud y financiado por el Consejo Nacional de Desarrollo Científico y Tecnológico (CNPq) de Brasil. Tiene como objetivo identificar la legislación de base de la salud, el derecho a la salud y los principios doctrinales y organizativos de cada país seleccionado con énfasis en el impacto de los determinantes sociales de la salud sobre los sistemas nacionales de salud. Los resultados revelaron países con legislaciones y principios doctrinales similares, con derecho a salud constitucional, anclados en la atención primaria de salud y con un modelo asistencial de acceso del tipo salud de la familia. Los desafíos encontrados fueron la baja tasa de natalidad y la alta esperanza de vida al nacer en países europeos y criterios para el acceso a medicamentos y financiación asistencial. Con base en nuestros hallazgos, los países que tuvieron mayor inversión en base estructural, asegurando condiciones socioeconómicas y sanitarias más dignas, sólidas y vigilantes, garantizan una diferenciación importante en la capacidad de respuesta y sostenibilidad del sistema nacional de salud y en el impacto directo en la calidad de vida de las personas.
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Determinantes Sociales de la Salud , Humanos , Brasil , Portugal , España , Italia , Programas Nacionales de Salud/legislación & jurisprudencia , Política de Salud/legislación & jurisprudencia , Atención Primaria de Salud/legislación & jurisprudencia , Accesibilidad a los Servicios de Salud/legislación & jurisprudencia , Factores Socioeconómicos , Derecho a la Salud/legislación & jurisprudenciaRESUMEN
The use of invasive physiology methods in patients with renal dysfunction is not well elucidated. Our objective was to evaluate the in-hospital and long-term results of using intracoronary physiology to guide revascularization in patients with chronic kidney disease. In this retrospective study, we evaluated 151 patients from January 2018 to January 2022, divided into 2 groups: CKD (81 patients [114 lesions]) and non-CKD (70 patients [117 lesions]). The mean age was higher (p < 0.001), body mass index was lower (p = 0.007), contrast volume used was lower (p = 0.02) and the number of ischemic lesions/patients was higher (p = 0.005) in the CKD group. The primary outcomes (rate of major adverse cardiac events during follow-up, defined as death, infarction, and need for new revascularization) in the CKD and non-CKD groups were 22.07% and 14.92%, respectively (p = 0.363). There was a significant difference in the target lesion revascularization (TLR) rate (11.68%, CKD group vs. 1.49%, non-CKD group, p = 0.02), this initial statistical difference was not significant after adjusting for variables in the logistic regression model. There was no difference between the rates of death from all causes (6.49%, CKD group vs. 1.49%, non-CKD group, p = 0.15), reinfarction (3.89%, CKD group vs. 1.49%, non-CKD group, p = 0.394), and need for new revascularization (11.68%, CKD group vs. 5.97%, non-CKD group, p = 0.297). As there was no difference in the endpoints between groups with long-term follow-up, this study demonstrated the safety of using intracoronary physiology to guide revascularization in patients with CKD.
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Owing to its exposed nature, the skin can be injured by various factors, including by Staphylococcus aureus, which inhabits its innate microbiota. Treatment of infected wounds presents an important challenge, making it imperative to develop new treatment options. Plant-derived formulations, such as those containing Melaleuca alternifolia essential oil (MaEO), are used for wound treatment because of their healing, anti-inflammatory, and antimicrobial properties. This study presents a cream containing 2% MaEO (2% CMa) and evaluates its effects in an S. aureus-infected wound murine model. The 2% CMa was subjected to quality control testing and pH and analysis of density, organoleptic characteristics, and microbiological effects. The quality control parameters all revealed the good stability of the 2% CMa. The formulation strongly reduced the S. aureus ATCC 6538 colony-forming unit (CFU) count in an ex vivo porcine skin model. In the murine model, daily topical application of 2% CMa reduced the severity and size of S. aureus-infected wounds and the bacterial load. These effects may be due to the presence of terpinen-4-ol, which exhibits anti-inflammatory activity. Based on these findings, the formulation exhibits good quality and safety. We suggest the topical application of this formulation, which exhibited an antimicrobial effect, as an interesting treatment strategy for wound healing.
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Melaleuca , Aceites Volátiles , Infecciones Estafilocócicas , Staphylococcus aureus , Cicatrización de Heridas , Animales , Cicatrización de Heridas/efectos de los fármacos , Staphylococcus aureus/efectos de los fármacos , Ratones , Melaleuca/química , Aceites Volátiles/farmacología , Aceites Volátiles/administración & dosificación , Porcinos , Infecciones Estafilocócicas/tratamiento farmacológico , Infecciones Estafilocócicas/microbiología , Infección de Heridas/tratamiento farmacológico , Infección de Heridas/microbiología , Antibacterianos/farmacología , Antibacterianos/administración & dosificación , Aceite de Árbol de Té/farmacología , Aceite de Árbol de Té/administración & dosificación , Aceite de Árbol de Té/química , Piel/efectos de los fármacos , Piel/microbiología , Productos Biológicos/farmacología , Productos Biológicos/administración & dosificación , Productos Biológicos/química , Femenino , Modelos Animales de Enfermedad , MasculinoRESUMEN
Nanotechnology has been established as a promising alternative for treating a myriad of disease-causing microorganisms that pose threats to human health. The utilization of nanoparticles (NPs) emerges as a strategy to enhance the therapeutic arsenal against these diseases, especially given the tendency of many pathogens to develop resistance to conventional medications. Notably, titanium dioxide nanoparticles (TiO2NPs) have garnered attention for their multifaceted biomedical applications, encompassing antibacterial, antifungal, antiviral, anticancer, antioxidant, and drug delivery properties. This review focuses on the cutting-edge potential of TiO2NPs against helminths, protozoa, and vectors, underscoring their pivotal role in combating these health-threatening agents.
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In 2015-2016, the Zika virus (ZIKV) caused a major epidemic in the Americas, increasing cases of microcephaly and Guillain-Barré syndrome. During this period, the discovery of ZIKV sexual transmission intensified studies on the impact of this virus on the reproductive organs. For this study, 2-month-old male BALB/c mice were infected with 1.26 x 106 PFU/mL of ZIKV in solution via the intravenous route. After three, seven, and fourteen days post-infection (DPI), blood and testicle samples were obtained to detect ZIKV RNA. The authors observed that the infected animals had slower weight gain than the control group. Viremia occurred only at 3DPI, and the ZIKV RNA was detected in one testis sample at 7DPI. The histopathological analysis of this organ revealed intense disorganization of the seminiferous tubules' structure, inflammatory infiltrate, necrosis, hemorrhage, fluid accumulation, congestion of blood vessels, and reduced sperm count. Ultrastructural analysis showed nuclear changes in tubule cells, activation of interstitial cells, and morphological changes in spermatozoa, in addition to fragmentation and decreased electron density of the genetic material of these cells. Thus, despite causing predominantly asymptomatic infections, ZIKV can cause significant subclinical and transient damage, including to male reproductive organs.
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Omega-3 fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), offer numerous health benefits. Enriching these fatty acids in fish oil using cost-effective methods, like lipase application, has been studied extensively. This research aimed to investigate F. solani as a potential lipase producer and compare its efficacy in enhancing polyunsaturated omega-3 fatty acids with commercial lipases. Submerged fermentation with coconut oil yielded Lipase F2, showing remarkable activity (215.68 U/mL). Lipase F2 remained stable at pH 8.0 (activity: 93.84 U/mL) and active between 35 and 70 °C, with optimal stability at 35 °C. It exhibited resistance to various surfactants and ions, showing no cytotoxic activity in vitro, crucial for its application in the food and pharmaceutical industries. Lipase F2 efficiently enriched EPA and DHA in fish oil, reaching 22.1 mol% DHA and 23.8 mol% EPA. These results underscore the economic viability and efficacy of Lipase F2, a partially purified enzyme obtained using low-cost techniques, demonstrating remarkable stability and resistance to diverse conditions. Its performance was comparable to highly pure commercially available enzymes in omega-3 production. These findings highlight the potential of F. solani as a promising lipase source, offering opportunities for economically producing omega-3 and advancing biotechnological applications in the food and supplements industry.
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Ácidos Grasos Omega-3 , Fusarium , Lipasa , Fusarium/enzimología , Fusarium/efectos de los fármacos , Lipasa/metabolismo , Ácidos Grasos Omega-3/metabolismo , Aceites de Pescado/metabolismo , Aceites de Pescado/química , Fermentación , Proteínas Fúngicas/metabolismo , Ácidos Docosahexaenoicos/metabolismo , Ácido Eicosapentaenoico/metabolismo , Concentración de Iones de Hidrógeno , Estabilidad de Enzimas , Aceite de Coco/química , Aceite de Coco/metabolismo , TemperaturaRESUMEN
OBJECTIVES: A recent European randomized trial - Tracheal Occlusion To Accelerate Lung Growth - demonstrated that fetoscopic endoluminal tracheal occlusion (FETO) is associated with increased postnatal survival among infants with severe congenital diaphragmatic hernia (CDH). However, this differs in middle-income countries such as Brazil, where abortion is illegal and neonatal intensive care is inadequate. This study evaluated the effects of FETO on improving the survival of infants with moderate-to-severe CDH in isolated and non-isolated cases. METHODS: This retrospective cohort study selected 49 fetuses with CDH, a normal karyotype, and a lung-to-head ratio (LHR) of <1 from a single national referral center for fetal surgery in São Paulo, Brazil, between January 2016 and November 2019. FETO was performed between 26 and 29 weeks of gestation. The primary outcomes were infant survival until discharge from the neonatal intensive care unit and survival until six months of age. RESULTS: Forty-six women with singleton fetuses having severe CDH underwent prenatal intervention with FETO. Infant survival rates until discharge and at six months of age were both 38â¯%. The observed-to-expected LHR increased by 25â¯% after FETO in neonates who survived until discharge. Spontaneous intrauterine death occurred in four growth-restricted fetuses after FETO. Preterm birth in <37 weeks and preterm rupture of membranes in <34 weeks occurred in 56.5â¯% (26) and 26â¯% (12) cases, respectively. CONCLUSIONS: FETO may increase neonatal survival in fetuses with severe CDH, particularly in countries with limited neonatal intensive care.
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Fetoscopía , Hernias Diafragmáticas Congénitas , Tráquea , Hernias Diafragmáticas Congénitas/cirugía , Hernias Diafragmáticas Congénitas/terapia , Hernias Diafragmáticas Congénitas/mortalidad , Humanos , Femenino , Fetoscopía/métodos , Fetoscopía/estadística & datos numéricos , Estudios Retrospectivos , Embarazo , Tráquea/cirugía , Recién Nacido , Brasil/epidemiología , Adulto , Lactante , Resultado del Tratamiento , Masculino , Tasa de SupervivenciaRESUMEN
Between 2017 and 2021, the Brazilian Unified Health System (BUHS) administered a total of 527,903,302 doses of immunizations. Each immunization results in the presence of a residual volume (RV) due to syringe dead space (DS). The International Organization for Standardization 7886-1 allows a DS of up to 0.07mL in sterile single-use hypodermic syringes with volumes less than 5mL. This study aims to quantify the DS of immunization devices used in Brazil, study the best combinations of needles and syringes to minimize RV, estimate the number of wasted doses from 2017 to 2021, and evaluate the impact on the BUHS. Pneumococcal 10 vaccine with a 25x6mm needle and a regular 1mL syringe exhibited a significantly higher average RV (0.0826mL) and waste rate (14.42%). It was observed that for some intramuscular vaccines, there is less waste when using a 20x5.5mm needle compared to a 25x6mm needle. The use of syringes with plunger stoppers that penetrate the syringe barrel, denoted as low dead space syringes, results in less RV and an estimated difference in the waste rate of approximately 10% compared to the regular syringe. The estimated number of wasted doses from 2017 to 2021 by BUHS is approximately 32 million doses.
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Vacunas , Brasil , Humanos , Jeringas , Agujas , Programas Nacionales de SaludRESUMEN
Green hydrogen is the key to the chemical industry achieving net zero emissions. The chemical industry is responsible for almost 2% of all CO2 emissions, with half of it coming from the production of simple commodity chemicals, such as NH3, H2O2, methanol, and aniline. Despite electrolysis driven by renewable power sources emerging as the most promising way to supply all the green hydrogen required in the production chain of these chemicals, in this review, it is worth noting that the photocatalytic route may be underestimated and can hold a bright future for this topic. In fact, the production of H2 by photocatalysis still faces important challenges in terms of activity, engineering, and economic feasibility. However, photocatalytic systems can be tailored to directly convert sunlight and water (or other renewable proton sources) directly into chemicals, enabling a solar-to-chemical strategy. Here, a series of recent examples are presented, demonstrating that photocatalysis can be successfully employed to produce the most important commodity chemicals, especially on NH3, H2O2, and chemicals produced by reduction reactions. The replacement of fossil-derived H2 in the synthesis of these chemicals can be disruptive, essentially safeguarding the transition of the chemical industry to a low-carbon economy.
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The monkeypox virus (MPXV) outbreak, primarily endemic to Africa, has spread globally, with Brazil reporting the second-highest number of cases. The emergence of MPXV in non-endemic areas has raised concerns, particularly due to the co-circulation of other exanthematous viruses such as varicella-zoster virus (VZV) and molluscum contagiosum virus (MOCV). To perform an accurate differential diagnosis of MPXV during the ongoing outbreak in Minas Gerais, Brazil, a 5PLEX qPCR assay targeting orthopoxviruses (OPV), VZV, and MOCV was used to retrospectively analyze all clinical samples that tested negative for MPXV in the initial screening conducted at Funed. In summary, our study analyzed 1,175 clinical samples received from patients suspected of MPXV infection and found a positivity rate of 33.8% (397 samples) for MPXV using the non-variola qPCR assay. Testing the 778 MPXV-negative clinical samples using the 5PLEX qPCR assay revealed that 174 clinical samples (22.36%) tested positive for VZV. MOCV DNA was detected in 13 and other OPV in 3 clinical samples. The sequencing of randomly selected amplified clinical samples confirmed the initial molecular diagnosis. Analysis of patient profiles revealed a significant difference in the median age between groups testing positive for MPXV and VZV and a male predominance in MPXV cases. The geographic distribution of positive cases was concentrated in the most populous mesoregions of Minas Gerais state. This study highlights the challenges posed by emerging infectious diseases. It emphasizes the importance of epidemiological surveillance and accurate diagnosis in enabling timely responses for public health policies and appropriate medical care. IMPORTANCE: Brazil ranks second in the number of cases during the global monkeypox epidemic. The study, conducted in Minas Gerais, the second most populous state in Brazil with over 20 million inhabitants, utilized differential diagnostics, revealing a significant number of positive cases for other exanthematous viruses and emphasizing the need for accurate diagnoses. During the study, we were able to assess the co-circulation of other viruses alongside monkeypox, including varicella-zoster virus, molluscum contagiosum virus, and other orthopoxviruses. The significance of the research is underscored by the concentration of positive cases in populous areas, highlighting the challenges posed by emerging infectious diseases. This demographic context further amplifies the importance of the research in guiding public health policies and medical interventions, given the substantial population at risk. The study not only addresses a global concern but also holds critical implications for a state with such a large population and geographic expanse within Brazil. Overall, the study emphasizes the pivotal role of surveillance and precise diagnosis in guiding effective public health responses and ensuring appropriate medical interventions.
Asunto(s)
Brotes de Enfermedades , Humanos , Brasil/epidemiología , Estudios Retrospectivos , Masculino , Femenino , Adulto , Diagnóstico Diferencial , Niño , Adolescente , Mpox/diagnóstico , Mpox/epidemiología , Mpox/virología , Adulto Joven , Preescolar , Persona de Mediana Edad , Monkeypox virus/genética , Monkeypox virus/aislamiento & purificación , Herpesvirus Humano 3/genética , Herpesvirus Humano 3/aislamiento & purificación , Lactante , Anciano , Exantema/virología , Exantema/epidemiología , Reacción en Cadena en Tiempo Real de la PolimerasaRESUMEN
Aim: To evaluate the biological and mechanical properties of an adhesive with nanostructured silver vanadate (AgVO3). Materials & methods: Specimens in poly(methyl methacrylate) (PMMA) were treated with Ultra Corega Cream (UCCA) denture adhesive with or without AgVO3. Biofilms of Candida albicans, Candida glabrata and Streptococcus mutans were grown and the viable cells counted. Fluorescence microscopy was used. The viability of the VERO cell and adhesive strength were evaluated. Results: All concentrations of AgVO3 reduced the biofilm formation and showed no cytotoxic effect. At 5 min and 24 h, UCCA with 5 and 10% AgVO3 showed better performance, respectively. Conclusion: AgVO3 promoted the antibiofilm activity of the adhesive, with a positive effect on the adhesive strength, and was biocompatible.
What is this summary about? Some people wear false teeth called dentures. They use a special glue to keep these false teeth in their mouths. It is important to clean dentures well and remove the glue every day. If the dentures get dirty, they can cause infections of the gums. Doctors and dentists can help, but sometimes medicines do not work well. This study checked to see whether adding a medicine that can kill bacteria into the glue could stop gum swelling and other illnesses, or make them better.What were the results? The glue containing the medicine killed microbes like fungi and bacteria. It also stuck things together well and was safe to use.What do the results mean? Using this special glue could help people with dentures to avoid illness.