2,591 results match your criteria: "Fluminense Federal University.[Affiliation]"
Discov Nano
November 2024
Health Sciences Post-Graduation Program, Federal University Mato Grosso, Sinop, 78550-728, Brazil.
Background: Malaria, a tropical neglected disease, imposes a significant burden on global health, leading to the loss of thousands of lives annually. Its gold standard treatment is a combination therapy of lumefantrine (LUM) and artemether (ART). Nanotechnology holds significant potential for improving drug bioavailability and potency while reducing adverse effects.
View Article and Find Full Text PDFAn Acad Bras Cienc
November 2024
National Observatory, Department of Geophysics, R. Gal. José Cristino, 77, 20921-400 Rio de Janeiro, RJ, Brazil.
This study focuses on the laboratory-scale petrophysical characterization of sandstones from the Rio Bonito Formation (Lower Permian), Paraná Basin, carried out from drill core samples from well PN-14-SC.02 obtained by CPRM-Brazilian Geological Service in the 1980s on the eastern edge of the Basin. This study includes integrating experimental data from routine petrophysics, sedimentary petrography, and nuclear magnetic resonance (NMR) obtained from 6 samples arranged in the normal direction of the stratification, present between 40 and 200 m deep.
View Article and Find Full Text PDFInt J Gynaecol Obstet
November 2024
Division of Minimally Invasive Gynecologic Surgery, Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville, Florida, USA.
The authors propose a new classification of intrauterine adhesions (IUAs) to facilitate understanding for both the gynecologist and the patient, documenting the location and characteristics of the adhesions in a single image. This tool significantly improves surgical planning and patient outcomes in the treatment of intrauterine adhesions. In addition, having a simple and consistent method of describing IUAs will facilitate longitudinal studies tracking the outcomes of various surgical techniques, adhesion barriers and the impact of hormonal treatment.
View Article and Find Full Text PDFJ Epidemiol Glob Health
December 2024
Department of Primary Care and Population Health, University of Nicosia Medical School, Nicosia, Cyprus.
Introduction: The COVID-19 pandemic overwhelmed health systems, resulting in a surge in excess deaths. This study clustered countries based on excess mortality to understand their response to the pandemic and the influence of various factors on excess mortality within each cluster.
Materials And Methods: This ecological study is part of the COVID-19 MORtality (C-MOR) Consortium.
Int J Mol Sci
October 2024
Clinical Research Unit, Antonio Pedro Hospital, Fluminense Federal University, Niteroi 24033-900, Brazil.
The development of effective biomaterials for tissue regeneration has led to the exploration of blood derivatives such as leucocyte- and platelet-rich fibrin (L-PRF). A novel variant, Albumin-Enriched Platelet-Rich Fibrin (Alb-PRF), has been introduced to improve structural stability and bioactivity, making it a promising candidate for bone regeneration. This study aimed to evaluate Alb-PRF's capacity for cytokine and growth factor release, along with its effects on the proliferation, differentiation, and mineralization of human osteoblasts in vitro.
View Article and Find Full Text PDFHypertrophic cardiomyopathy (HCM) is a hereditary cardiovascular condition marked by heart muscle thickening, fibrosis, and myocardial disorders. It is often inherited in an autosomal dominant pattern. Symptoms include dyspnea, fatigue, palpitations, dizziness, syncope, and an increased risk of sudden cardiac death (SCD).
View Article and Find Full Text PDFFront Physiol
October 2024
Laboratory of Pulmonary Investigation, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Acute Respiratory Distress Syndrome (ARDS) is initiated by a primary insult that triggers a cascade of pathological events, including damage to lung epithelial and endothelial cells, extracellular matrix disruption, activation of immune cells, and the release of pro-inflammatory mediators. These events lead to increased alveolar-capillary barrier permeability, resulting in interstitial/alveolar edema, collapse, and subsequent hypoxia and hypercapnia. ARDS not only affects the lungs but also significantly impacts the cardiovascular system.
View Article and Find Full Text PDFBrain Behav Immun
October 2023
D'Or Institute for Research and Education (IDOR), Rua Diniz Cordeiro, 30, Botafogo, 22281-100 Rio de Janeiro, RJ, Brazil.
Post-COVID-19 Condition (PCC) refers to a multisystemic syndrome that persists for months after SARS-CoV-2 infection. Cognitive deficits, fatigue, depression, and anxiety are common manifestations of the condition, but the underlying mechanisms driving these long-lasting neuropsychiatric features are still unclear. We conducted a prospective multi-method investigation of post-hospitalization COVID-19 patients in Rio de Janeiro, Brazil.
View Article and Find Full Text PDFFront Endocrinol (Lausanne)
November 2024
Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil.
Galectin-3 is an endogenous lectin which binds mainly to β-galactosides on the cell surface and extracellular matrix (ECM) glycoproteins. In the thymus, this lectin is constitutively expressed, being involved in thymocyte adhesion, migration, and death. Galectin-3 has been related to type 1 diabetes, an autoimmune disease characterized by pancreatic β-cell destruction mediated by autoreactive T lymphocytes.
View Article and Find Full Text PDFAppl Environ Microbiol
November 2024
Center for Food Analysis (NAL), Technological Development Support Laboratory (LADETEC), Federal University of Rio de Janeiro (UFRJ), Cidade Universitária, Rio de Janeiro, Brazil.
In response to the COVID-19 pandemic, scientific authorities were routinely consulted by mainstream media outlets through interviews, statements and/or supporting images. In this framework, our goal in this study was to analyze the media representation of scientists in Brazil during the first year of this global public health crisis. To this end, we applied a research protocol and, using statistical techniques, quantitatively analyzed newscasts on the country's main TV news program, Jornal Nacional.
View Article and Find Full Text PDFPLoS One
October 2024
State University of Ceará, Graduate Program in Nutrition and Health, Fortaleza, Ceará, Brazil.
The main factors related to the lack of coverage in Health Information Systems are concentrated in the scarce and incipient training of health professionals regarding the collection and typing of data, as well as the importance of using information. The aim of this study was to analyze the perceptions of primary health care professionals from Brazil about the functioning of the Food and Nutritional Monitoring System (SISVAN). Multicentric qualitative study, carried out with 38 health professionals in Basic Health Units (BHU) in five regions around the country.
View Article and Find Full Text PDFToxins (Basel)
September 2024
Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niteroi 24033-900, Brazil.
Propolis possesses many bioactive compounds that could modulate the gut microbiota and reduce the production of uremic toxins in patients with chronic kidney disease (CKD) undergoing hemodialysis (HD). This clinical trial aimed to evaluate the effects of propolis on the gut microbiota profile and uremic toxin plasma levels in HD patients. These are secondary analyses from a previous double-blind, randomized clinical study, with 42 patients divided into two groups: the placebo and propolis group received 400 mg of green propolis extract/day for eight weeks.
View Article and Find Full Text PDFDent J (Basel)
September 2024
Dental Specialty Center, Brazilian Military Police, Belo Horizonte 30350-190, Brazil.
Crit Rev Food Sci Nutr
October 2024
Department of Food Technology, Faculty of Veterinary, Fluminense Federal University (UFF) - Niterói, Rio de Janeiro, Brazil.
Background: The Amazon forest produces a variety of fruits with strong biotechnological potential. However, their use in dairy products is restricted.
Scope And Approach: This work aims to carry out a bibliographic survey on the technological applications of select edible Amazonian fruits and their residues in the elaboration and quality of dairy products.
Arch Oral Biol
January 2025
Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil. Electronic address:
Objectives: To investigate the association between genetic polymorphisms in suppressor of cytokine signaling-1 (SOCS-1), tumor necrosis factor-⍺ (TNF-α) and its receptors 1 and 2 (TNFRSF1A and TNFRSF1B), receptor activator of nuclear factor kappa-b (RANK), receptor activator of nuclear factor-kappa B ligand (RANKL) and osteoprotegerin (OPG), and persistent apical periodontitis (PAP).
Methods: Patients with pulp necrosis and apical periodontitis at the time of non-surgical root canal treatment were followed up for at least one year. A total of 423 subjects were included, 172 with signs/symptoms of PAP and 251 with apical periodontitis healed.
Periodontol 2000
October 2024
Department of Periodontology, Operative and Preventive Dentistry, University of Bonn, Bonn, Germany.
To provide an overview of the use of autogenous platelet concentrates (APCs) in periodontal regeneration and to conduct a systematic review (SR) of the treatment outcomes of periodontal intrabony defects by using platelet-rich fibrin (PRF) compared with other commonly utilized modalities. The eligibility criteria comprised randomized controlled trials (RCTs) comparing the clinical outcomes of PRF with that of other modalities. Studies were classified into 21 categories and into five different groups as follows: Group I (1) open flap debridement (OFD) alone versus OFD/PRF, (2) OFD versus Titanium-PRF (T-PRF) Group II, (3) Comparative PRF protocols (PRF vs.
View Article and Find Full Text PDFCureus
September 2024
Neurosurgery, Fluminense Federal University, Niterói, BRA.
Malar J
October 2024
Evandro Chagas National Institute of Infectious Diseases, Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Rio de Janeiro, Brazil.
Background: Malaria is an infectious disease caused by the Plasmodium species and is a global burden. When not treated correctly, it can reemerge as a relapse or recrudescence. Malaria relapse cases can contribute to maintaining active transmission chains and can influence the patient to develop severe malaria, potentially leading to hospitalization or death.
View Article and Find Full Text PDFJ Oral Biol Craniofac Res
October 2024
Department of Orthodontics, University Hospital Bonn, Medical Faculty, Bonn, Germany.
Background And Objectives: Pulp calcification is associated with many factors and triggers, including individual genetic predisposition and orthodontic forces. This study aimed to investigate whether genetic polymorphisms in are associated with a risk of dental pulp calcifications in orthodontic patients.
Materials And Methods: Digital orthopantomography (OPG) and genomic DNA from 132 patients were analyzed in this cross-sectional study.
Cureus
September 2024
Neurosurgery, Fluminense Federal University, Niterói, BRA.
Peripheral nerve injuries (PNIs) pose significant clinical challenges due to their complex healing processes and the often incomplete functional recovery. This review and bibliometric analysis aimed to provide a comprehensive overview of advancements in peripheral nerve regeneration research, focusing on trends, influential studies, and emerging areas. By analyzing 2921 publications from the Web of Science Core Collection, key themes such as nerve regeneration, repair, and the critical role of Schwann cells were identified.
View Article and Find Full Text PDFJ Clin Sleep Med
October 2024
Antonio Pedro University Hospital, Fluminense Federal University, Rio de Janeiro, Brazil.
The botulinum toxin (BT) is US Food and Drug Administration-approved for therapeutic applications in different medical conditions. However, BT is not considered an obstructive sleep apnea (OSA) therapy. OSA is characterized by recurrent airway collapse during sleep, leading to intermittent hypoxia, hypercapnia, and arousal.
View Article and Find Full Text PDFSci Rep
October 2024
Biology Institute and SAGE/COPPE, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, 21941-617, Brazil.
Coral microbiomes play crucial roles in holobiont homeostasis and adaptation. The host's ability to populate broad ecological niches and to cope with environmental changes seems to be related to the flexibility of the coral microbiome. By means of high-throughput DNA sequencing we characterized simultaneously both bacterial (16S rRNA) and Symbiodiniaceae (ITS2) communities of four reef-building coral species (Mussismilia braziliensis, Mussismilia harttii, Montastraea cavernosa, and Favia gravida) that differ in geographic distribution and niche specificity.
View Article and Find Full Text PDFDiagnostics (Basel)
September 2024
Hemato-Oncology Molecular Program, National Institute of Cancer, 23rd Red Cross Square, 6th Floor, Rio de Janeiro 20230-130, RJ, Brazil.
: Osteopontin (OPN) is a glycoprotein involved in various physiological and pathological processes, and its aberrant expression in cancer cells is closely linked to tumor progression. In colorectal cancer (CRC), OPN is overexpressed, but the roles of its splice variants (OPN-SVs), OPNa, OPNb, and OPNc, are not well understood. This study aimed to characterize the expression patterns of OPN-SVs and their potential diagnostic and prognostic implications in CRC using transcriptomic data deposited in TSVdb and TCGA.
View Article and Find Full Text PDFSensors (Basel)
October 2024
Institute of Science and Technology, Fluminense Federal University, Rio das Ostras 28895-532, Brazil.
The digital twin (DT), which involves creating a virtual replica of a physical asset or system, has emerged as a transformative set of tools across various industries. In the oil and gas (O&G) industry, the development of DTs represents a significant evolution in how companies manage complex operations, enhance safety, and optimize decision-making processes. Despite these significant advancements, the underlying tools, technologies, and frameworks for developing DTs in O&G applications remain non-standardized and unfamiliar to many O&G practitioners, highlighting the need for a systematic literature review (SLR) on the topic.
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