548,041 results match your criteria: "Brazil; Hospital Beneficencia Portuguesa de Sao Paulo[Affiliation]"

Exploring the Electronic and Mechanical Properties of TPDH Nanotube: Insights from Ab Initio and Classical Molecular Dynamics Simulations.

ACS Omega

December 2024

Electronic Structure and Atomistic Dynamics Interdisciplinary Group (GEEDAI), Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Avenida dos Estados 5001, 09210-580 Santo Andre, Sao Paulo, Brazil.

Tetra-Penta-Deca-Hexa graphene (TPDH) is a new two-dimensional (2D) carbon allotrope with attractive electronic and mechanical properties. It is composed of tetragonal, pentagonal, decagonal and hexagonal carbon rings. When TPDH graphene is sliced into quasi-one-dimensional (1D) structures such as nanoribbons, it exhibits a range of behaviors, from semimetallic to semiconducting.

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Use of Luminescence Modulation in a New Series of Mixed Lanthanide Metal-Organic Frameworks for Selective Firearm Ammunition Marking.

ACS Omega

December 2024

Grupo de Química de Coordenação e Espectroscopia de Lantanídeos (GQCEL), Instituto de Química, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ 20550-013, Brazil.

Metal-organic frameworks (MOFs) are coordination polymers that can generally be described by secondary building units (SBUs). These include lanthanide MOFs, specifically mixed lanthanide MOFs (m-LnMOFs), encompassing coordination polymers formed by two or more different Ln ions. These compounds have been the subject of study by inorganic chemists worldwide, mainly due to the possibility of obtaining long-awaited tunable luminescence, i.

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This work investigated the production and characterization of a silk fibroin (SF) hydrogel incorporated with an (AV) extract. Four extraction methods, ultrasound-assisted extraction with bath and probe, stirring, and Soxhlet, were tested, while the hydrogel was produced by a one-step freeze-thaw method. Besides the extraction yield, the antioxidant capacity of the extracts was accessed, which allowed to select the extract obtained by ultrasound-assisted extraction to be incorporated into the hydrogels.

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The rising incidence of fungal infections coupled with limited treatment options underscores the urgent need for novel antifungal therapies. Riboswitches, particularly thiamin pyrophosphate (TPP) class, have emerged as promising antimicrobial targets. This study presents a comprehensive genome-wide analysis of TPP riboswitches in 156 medically relevant fungi utilizing advanced covariance models (CMs) tailored for fungal sequences.

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Assessing the Interactions between Snake Venom Metalloproteinases and Hydroxamate Inhibitors Using Kinetic and ITC Assays, Molecular Dynamics Simulations and MM/PBSA-Based Scoring Functions.

ACS Omega

December 2024

Avenida Antônio Carlos 6627, Dept. De Bioquímica e Imunologia, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil.

species are the main cause of snake bites in rural communities of tropical developing countries of Central and South America. Envenomation by snakes is characterized by prominent local inflammation, hemorrhage and necrosis as well as systemic hemostatic disturbances. These pathological effects are mainly caused by the major toxins of the viperidae venoms, the snake venom metalloproteinases (SVMPs).

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The five-coordinate complex [RuCl(PNP)] () was synthesized from the binuclear [RuCl(-cym)] with a PNP-type ligand (PNP = 3,6-di--butyl-1,8-bis(dipropylphosphino)methyl)-9-carbazole - (Cbzdiphos )H) in a toluene solution, within 20 h at 110 °C, producing a green solid, which was precipitated with a 1/1 mixture of - pentane/HMDSO. The complex was characterized by NMR-H, C, and P{H}, mass spectroscopy-LIFDI, FTIR, UV/vis spectroscopy, and cyclic voltammetry, as well as a description of the optimized structure by DFT calculation. The reactivity of was investigated in the presence of potassium triethylborohydride (KBEtH, in THF solution of 1.

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Acute hepatitis of unknown etiology (non-HepA-E hepatitis) emerged affecting children in 2021 and in parallel with the COVID-19 pandemic. In the present article, we performed an analysis between two plasma samples from pediatric patients, one with non-HepA-E hepatitis and the other healthy, to evaluate possible proteomic alterations associated with viral targets as possible causative agents and pathophysiological processes using the high-resolution and label-free LC-MS/MS technique. We identified 72 altered differentially expressed proteins, 45 upregulated and 27 downregulated.

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Ambient temperature and dengue hospitalization in Brazil: A 10-year period case time series analysis.

Environ Epidemiol

February 2025

Barcelona Institute for Global Health, ISGlobal, Universitat Pompeu Fabra, CIBER Epidemiología y Salud Pública, Barcelona, Spain.

Background: Dengue has an increased worldwide epidemic potential with the global rising temperature due to climate change. Heat and rainfall are known to influence seasonal patterns of dengue transmission over the course of weeks to months. However, there is a gap in knowledge about the short-term effect of heat on dengue severity.

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Purpose: Deep learning-based radiomics techniques have the potential to aid specialists and physicians in performing decision-making in COVID-19 scenarios. Specifically, a Deep Learning (DL) ensemble model is employed to classify medical images when addressing the diagnosis during the classification tasks for COVID-19 using chest X-ray images. It also provides feasible and reliable visual explicability concerning the results to support decision-making.

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Psychedelics for the Treatment of Psychiatric Disorders: Interpreting and Translating Available Evidence and Guidance for Future Research.

Am J Psychiatry

January 2025

Department of Psychiatry (McIntyre, Mansur, Rosenblat) and Department of Pharmacology and Toxicology (McIntyre, Mansur, Rosenblat), University of Toronto, Toronto; Brain and Cognition Discovery Foundation, Toronto (Kwan, Teopiz); Faculty of Medicine, University of Ottawa, Ottawa (Kwan); Champalimaud Research and Clinical Center, Champalimaud Foundation, Lisbon (Oliveira-Maia); NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Lisbon (Oliveira-Maia); Department of Psychiatry and Behavioral Sciences, University of South Carolina School of Medicine, Greenville (Maletic); Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Stanford (Suppes); Department of Psychiatry, University of California, San Diego (Stahl).

During the past decade, there has been extraordinary public, media, and medical research interest in psychedelics as promising therapeutics for difficult-to-treat psychiatric disorders. Short-term controlled trial data suggest that certain psychedelics are effective and safe in the treatment of major depressive disorder, treatment-resistant depression, and posttraumatic stress disorder. Preliminary evidence also supports efficacy in other psychiatric disorders (e.

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Addressing the needs for cultural adaptation of DARE-keepin' it REAL among Brazilian students: strategies to improve implementation.

Subst Abuse Treat Prev Policy

December 2024

Department of Preventive Medicine, Universidade Federal de São Paulo, Rua Botucatu, N 740 - Vila Clementino, São Paulo, SP, 04023-062, Brazil.

Background: The widely implemented prevention program in Brazil, PROERD (a translated version of the DARE-kiR program), showed no evidence of effect in preventing drug use in a recent trial. The lack of cultural adaptation and instructors' deviations from the curriculum were identified as potential reasons for its ineffectiveness. This study aims to identify points of inadequacy of the PROERD program for the Brazilian culture, suggesting strategies for revising the curriculum to improve implementation.

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The Influence of Ovarian-Derived Extracellular Vesicles in Reproduction.

Adv Anat Embryol Cell Biol

January 2025

Laboratory of Molecular Morphophysiology and Development, Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, São Paulo, Brazil.

In this chapter, we explore the multifaceted roles of extracellular vesicles (EVs) in ovarian biology, focusing on their contributions to folliculogenesis, oocyte competence, corpus luteum function, and immune response regulation. EVs, particularly those derived from follicular fluid (ffEVs), are crucial mediators of cell-to-cell communication within the ovarian follicle, influencing processes such as meiotic progression, stress response, and hormonal regulation. We review preexisting literature, highlighting key findings on the molecular cargo of EVs, such as miRNAs and proteins, and their involvement in regulating the function of the follicle cells.

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Objective: The relationship between different power equations and the severity of acute respiratory distress syndrome (ARDS) remains unclear. This study aimed to evaluate various power equations: total mechanical power, total elastic power (comprising elastic static and elastic dynamic power), and resistive power, in a cohort of mechanically ventilated patients with and without ARDS. Bayesian analysis was employed to refine estimates and quantify uncertainty by incorporating a priori distributions.

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This study aims to evaluate the post-surgical stability of patients with cleft lip and palate that underwent maxillary advancement surgery. The study was conducted by means of cephalometric analysis of the soft tissues in digital radiographs acquired preoperatively, immediate postoperatively and six months after surgery using Dolphin Imaging 11.5 software.

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Introduction And Aims: Dental practices pose a high risk of microbial contamination due to frequent exposure to bodily fluids like saliva and blood. Bioengineering innovations have emerged as vital tools to enhance infection control in dental settings. This review aims to assess the global applications and effectiveness of these innovations, particularly focusing on antimicrobial biomaterials, sterilization techniques, and personal protective equipment (PPE).

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Objectives: To investigate clinical characteristics, symptom profile, testing practices, treatment patterns and quality of life (QoL) among patients with pulmonary arterial hypertension (PAH) in Latin America.

Design: Data from the Adelphi Real World PAH Disease Specific Programme, a cross-sectional survey with retrospective data collection.

Setting: University/teaching hospital, regional centres, private practices and government institutions in Argentina, Brazil, Colombia and Mexico.

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This study assessed the phytoremediation potential of grown in Oxisol contaminated with varying zinc concentrations. was cultivated in soil with Zn levels from 0 to 1920 mg kg. Growth parameters, Zn concentrations in plant parts, bioaccumulation, and translocation factors were measured.

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Background/aim: This study evaluated the diagnostic accuracy (DA) for colorectal adenomas (CRA), screened by fecal immunochemical test (FIT), using five artificial intelligence (AI) models: logistic regression (LR), support vector machine (SVM), neural network (NN), random forest (RF), and gradient boosting machine (GBM). These models were tested together with clinical features categorized as low-risk (lowR) and high-risk (highR).

Patients And Methods: The colorectal neoplasia (CRN) screening cohort of 5,090 patients included 222 CRA patients and 264 non-CRA patients.

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Changes in blowfly (Diptera: Calliphoridae) wing morphology during succession in rat carcasses across forest and grassland habitats in South Brazil.

Insect Sci

December 2024

Programa de Pós-Graduação em Biodiversidade Animal, Departamento de Ecologia e Evolução, Universidade Federal de Santa Maria, Santa Maria, Brazil.

Succession is one of the most extensively studied ecological phenomena, yet debates persist about the importance of dispersal and external factors in driving this process. We aimed to quantify the influence of these factors by investigating how wing-related traits evolve across succession of blowfly (Diptera: Calliphoridae) communities in South Brazil. Rat carrion was placed in both forest and grassland habitats, and the associated blowfly communities were documented throughout the decomposition process.

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Mindfulness interventions and quality of life in anxiety-related disorders: A systematic review and meta-analysis.

J Affect Disord

December 2024

Anxiety, Obsessions and Compulsions Research Program, Institute of Psychiatry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil; D'Or Institute for Research and Education, Rio de Janeiro, Brazil; Department of Psychiatry, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.

Mindfulness-based interventions (MBIs) effectively treat anxiety symptoms across different anxiety and related disorders (ARDs), including panic disorder, social anxiety disorder, generalized anxiety disorder, obsessive-compulsive disorder, and post-traumatic stress disorder. In this systematic review and meta-analysis, we investigate whether MBIs also lead to improvements in the quality of life (QoL) of patients with ARDs. A systematic review was performed through electronic search in PUBMED, PsycINFO, Embase, Web of Science, and Clinical Trials databases.

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Orofacial pain is one of the most common causes of chronic pain leading to physical and cognitive disability. Several clinical and pre-clinical studies suggest that chronic pain results in cognitive impairment. However, there is a lack of meta-analyses examining the effects of orofacial pain models on behavioral learning and memory in rodents.

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Although sperm sexing technology has progressed considerably in the last decade, there are still challenges to fully understand the reason for the low fertility of sexed sperm. Thus, we aimed to evaluate the effect of sexed and non-sexed sperm on the proteome of bovine oviduct epithelial cells (BOECs). Semen from six Nellore bulls was used and one ejaculate from each bull was collected and separated into three fractions: non-sexed, sexed for X-sperm and sexed for Y-sperm.

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System justification, subjective well-being, and mental health symptoms in members of disadvantaged minority groups.

Clin Psychol Rev

December 2024

Department of Psychology, New York University, Meyer Building, 6 Washington Place, Room 530, New York, NY 10003, United States of America. Electronic address:

Although system justification-believing that the societal status quo is legitimate and desirable-is positively associated with subjective well-being and mental health outcomes for members of advantaged groups, the picture is more complicated for members of disadvantaged minority groups. According to system justification theory, believing that the social system is legitimate and desirable is a way of coping with one's own and fellow in-group members' state of disadvantage. At the same time, it is also a potential stressor, insofar as it implies that there are deficiencies of the individuals and groups who "fail" to succeed in a fair system.

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Automatic segmentation of cardiac structures can change the way we evaluate dose limits for radiotherapy in the left breast.

J Med Imaging Radiat Sci

December 2024

Department of Radiotherapy, Instituto Brasileiro de Controle do Câncer (IBCC), Avenida Alcântara Machado, 2576, Mooca, 03102-002 São Paulo, SP, Brazil; Department of Radiotherapy, Instituto de Radiologia do Hospital das Clínicas - HCFMUSP (InRad), Hospital das Clínicas, University of São Paulo, Rua Doutor Ovídio Pires de Campos, 75, Portaria 1, Cerqueira César, 05403-010 São Paulo, SP, Brazil.

Purpose: Radiotherapy is a crucial part of breast cancer treatment. Precision in dose assessment is essential to minimize side effects. Traditionally, anatomical structures are delineated manually, a time-consuming process subject to variability.

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