550,174 results match your criteria: "Brazil; Hospital Samaritano[Affiliation]"

Schizophrenia is a chronic psychiatric disorder characterized by a variety of symptoms broadly categorized into positive, negative, and cognitive domains. Its etiology is multifactorial, involving a complex interplay of genetic, neurobiological, and environmental factors, and its neurobiology is associated with abnormalities in different neurotransmitter systems. Due to this multifactorial etiology and neurobiology, leading to a wide heterogeneity of symptoms and clinical presentations, current antipsychotic treatments face challenges, underscoring the need for novel therapeutic approaches.

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Purpose: Breast cancer encompasses various subtypes with distinct prognoses, necessitating accurate stratification methods. Current techniques rely on quantifying gene expression in limited subsets. Given the complexity of breast tissues, effective detection and classification of breast cancer is crucial in medical imaging.

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"Longing is good": proof-of-concept for a novel psychological intervention to tackle self-blaming emotions.

Front Psychol

January 2025

Department of Psychological Medicine, Centre for Affective Disorders, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom.

Background: Many people with depression, for which self-blame plays a key role, are not amenable to current standard psychological treatments. This calls for novel self-guided interventions, which require less attention and motivation. The present study sought to establish proof-of-concept for a novel self-guided intervention in a non-clinical sample, which prompts people to transform self-blaming feelings into "longing," as a related unpleasant, but presumably more adaptive and approach-related emotion, which plays a key role in many musical and literary genres but has been largely overlooked in clinical research.

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Erythropoietin-producing hepatocellular (Eph) receptors comprise the largest group of surface receptors and are responsible for cellular signals. Eph/ephrin signaling has been identified to play a role in key cancer development and progression processes, especially in the upper gastrointestinal tract. The Eph/ephrin system has been described as a tumor suppressor in duodenal cancer, while in esophageal, gastric, hepatic, and pancreatic cancer, the system has been related to tumor progression.

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Prenatal syphilis and adverse pregnancy outcomes in women with HIV receiving ART in Brazil: a population-based study.

Lancet Reg Health Am

November 2024

Ministry of Health - Brazil, Department of Surveillance, Prevention and Control of STIs, AIDS, and Viral Hepatitis, SRTVN Quadra 701, Lote D, Edifício PO700 - 5º Andar, CEP: 70719-040, Brasília/DF, Brazil.

Background: We aimed to examine factors associated with prenatal syphilis, including prenatal care, and pregnancy outcomes of pregnant women with HIV in Brazil.

Methods: Retrospective data were gathered from a national cohort of Brazilian women with HIV on antiretroviral therapy who became pregnant between January 2015 and May 2018. Prenatal syphilis was defined by clinical diagnoses with treatment or any positive syphilis laboratory result between 30 days before conception and pregnancy conclusion.

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Nationwide economic analysis of pulmonary tuberculosis in the Brazilian healthcare system over seven years (2015-2022): a population-based study.

Lancet Reg Health Am

November 2024

Programa Pós-graduação de Clínica Médica, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.

Background: Tuberculosis (TB) remains a global challenge and disproportionately affecting vulnerable populations. This study analyses the economic burden of pulmonary TB in Brazil, focusing on direct healthcare costs. It also evaluates the cost-effectiveness of the Directly Observed Treatment (DOT) strategy and the economic effort required to achieve a 90% probability of cure.

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Objective: Obsessive-compulsive and related disorders (OCRDs) and disorders due to addictive behavior (DABs) are prevalent conditions that share common neurobiological and behavioral characteristics. This scoping review aims to identify and map the range of subjective assessment tools (e.g.

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Context: This study was inspired by the considerable risks and diminishing enthusiasm among societies to invest in Olympic agendas, which traditionally involve billions of dollars, various opportunities, and complexities for host countries.

Purpose: The objective of this study was to evaluate the risks and benefits of long-term equity investments for companies and governments engaged in the Olympic movement.

Method: Qualitative methodologies were employed for this research, utilizing a multi-case approach that included 38 comprehensive interviews with companies and entities impacted by the Rio 2016 and Tokyo 2020 Olympic Games.

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"Doctor, I Want to Be Like This!": Exploring Global Beauty Body Standards Through a Multicenter Survey.

Plast Reconstr Surg Glob Open

January 2025

Academia de Chirurgia Plastica Mario Mendanha, Rua das Laranjeiras, Porto, Portugal.

Background: Plastic surgery aims to enhance patients' positive features and improve perceived flaws without seeking complete transformation. The body is a living organism, not a sculptural object to be reshaped at will. Aesthetic standards are influenced by subjective factors, including technology and social media's effect on self-perception and beauty ideals.

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Background: The increasing demand for noninvasive gluteal augmentation using hyaluronic acid (HA) gel highlights the need for research into its safety and effectiveness. This study aimed to assess the safety and satisfaction levels of patients and physicians regarding HA body filler for buttock enhancement. It also explores variations in outcomes across different injection sites and among different practitioners.

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Genetics and Epigenetics of Human Pubertal Timing: The Contribution of Genes Associated With Central Precocious Puberty.

J Endocr Soc

January 2025

Cellular and Molecular Endocrinology Laboratory LIM/25, Division of Endocrinology and Metabolism, Clinicas Hospital, School of Medicine, University of Sao Paulo, 01246-903 Sao Paulo, Brazil.

Human puberty is a dynamic biological process determined by the increase in the pulsatile secretion of GnRH triggered by distinct factors not fully understood. Current knowledge reveals fine tuning between an increase in stimulatory factors and a decrease in inhibitory factors, where genetic and epigenetic factors have been indicated as key players in the regulation of puberty onset by distinct lines of evidence. Central precocious puberty (CPP) results from the premature reactivation of pulsatile secretion of GnRH.

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In alignment with the global movement toward reducing animal testing, several reconstructed human epidermis (RHE) models have been created for conducting skin irritation tests. These models have undergone development, verification, validation, and integration into OECD TG 439. Our team has introduced a novel in-house RHE named GB-RHE, and we adhere to OECD TG 439 to pre-validate the model and test its potential employment for nanoparticle irritation studies.

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Pharmacogenetic Testing in Treatment-resistant Panic Disorder: a Preliminary Analysis.

Clin Pract Epidemiol Ment Health

December 2024

Laboratory of Panic and Respiration, Instituto de Psiquiatria, Universidade Federal do Rio de Janeiro (UFRJ). Rio de Janeiro, RJ, Brazil.

Background: Many pharmacological treatments are considered effective in the treatment of panic disorder (PD), however, about 20 to 40% of the patients have treatment-resistant PD. Pharmacogenetics could explain why some patients are treatment-resistant.

Objective: Our objective was to gather preliminary data on the clinical usefulness of pharmacogenetic testing in this disorder.

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Wild rodents serve as crucial reservoirs for zoonotic viruses. Anthropogenic and environmental disruptions, particularly those induced by mining activities, can destabilize rodent populations and facilitate the emergence of viral agents. In the Canaã dos Carajás and Curionópolis regions of Brazil, significant environmental changes have occurred due to mining expansion, potentially creating conditions conducive to the emergence of rodent-associated viral diseases.

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Bovine genital leptospirosis (BGL) is a silent and chronic reproductive syndrome associated with reproductive failures that result in animal suffering and substantial financial losses for farmers. Important aspects of the interactions between the host and the pathogen during chronic leptospirosis have been well described in the kidney, but little is known about the genital infection mechanisms. The present study sheds light on the pathophysiology of BGL based on comparative genomic analysis of renal versus genital isolates of genomes, an endemic species on Latin America.

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Two new species of are described, from Cerro Bañaderos in Hatonuevo, La Guajira, and from Roca Madre Cave, Toluviejo, Sucre, both from the Tropical Dry Forest (TDF) areas of the Colombian Caribbean. The latter represent the first troglobitic species of the genus. Moreover, based on specimens from Sierra Nevada de Santa Marta, Magdalena (type locality), is placed into and an identification key for all species of the genus is given.

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Development of a Second-Generation, Chemical Probe for PIKfyve.

J Med Chem

January 2025

Structural Genomics Consortium, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States.

We optimized our highly potent and cell-active chemical probe for phosphatidylinositol-3-phosphate 5-kinase (PIKfyve), SGC-PIKFYVE-1, resulting in compounds with improved potency and demonstrated stability. Use of an in-cell, kinome-wide selectivity panel allowed for confirmation of excellent in-cell selectivity of our lead compound, , and another promising analogue, . Evaluation of the pharmacokinetic (PK) profiles of these two compounds revealed that both are well tolerated systemically and orally bioavailable.

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Background: Anterior cruciate ligament reconstruction (ACLR) often involves harvesting a bone-patellar tendon-bone (BPTB) autograft. How graft harvest affects tendon strain across the 3 distinct regions (medial, lateral, and central) is not known.

Purpose: To (1) quantify strain in the 3 regions of the patellar tendon during 60% of maximum voluntary isometric contraction (MVIC) in 90° of knee flexion and (2) assess how effort level in 2 different knee joint angles (60° and 90°) impacts strain in the medial and lateral regions of the patellar tendon, in 2 cohorts of patients after ACLR using a BPTB autograft (one group <24 months after surgery and another group ≥24 months after surgery).

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Cold waves in the Amazon rainforest and their ecological impact.

Biol Lett

January 2025

Department of Animal Ecology and Tropical Biology, Biocenter, University of Würzburg, 97074 Würzburg, Germany.

Cold waves crossing the Amazon rainforest are an extraordinary phenomenon likely to be affected by climate change. We here describe an extensive cold wave that occurred in June 2023 in Amazonian-Andean forests and compare environmental temperatures to experimentally measured thermal tolerances and their impact on lowland animal communities (insects and wild mammals). While we found strong reductions in activity abundance of all animal groups under the cold wave, tropical lowland animals showed thermal tolerance limits below the lowest environmental temperatures measured during the cold wave.

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Melanoma is an aggressive cancer that has attracted attention in recent years due to its high mortality rate of 80%. Damage caused by oxidative stress generated by radical (type I reaction) and singlet oxygen, O (type II reaction) oxidative reactions may induce cancer. Thus, studies that aim to unveil the mechanism that drives these oxidative damage processes become relevant.

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This study investigated the effects of transcranial photobiomodulation (t-PBM) on para-athletes' manual dexterity and intralimbal coordination. Six para-athletes from a Boccia Team participated. t-PBM was administered using a LED helmet with 204 LEDs (660 and 850 nm) emitting 10 mW each, delivering 9 J/cm per LED during 15-min sessions three times a week.

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Enhancing the Bothropic Antivenom through a Reverse Antivenomics Approach.

J Proteome Res

January 2025

Departamento de Bioquímica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04023-901, Brazil.

Antivenoms are the only effective treatment for snakebite envenomation and have saved countless lives over more than a century. Despite their value, antivenoms present risks of adverse reactions. Current formulations contain a fraction of nonspecific antibodies and serum proteins.

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