982 results match your criteria: "Federal University of Santa Catarina-UFSC[Affiliation]"

Protective effects of different exercise modalities on oxidative stress in animal models of high intraocular pressure and diabetes.

Exp Eye Res

December 2024

Department of Biochemistry, Post-Graduate Program in Biochemistry and Post-Graduate Program in Pharmacology, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil. Electronic address:

High intraocular pressure (HIOP) and high glucose levels are associated with oxidative stress. Although physical exercise protects against oxidative damage, its specific impact on eye health remains unclear. Thus, this study aimed to assess the impact of physical exercise on the oxidative status of whole eyes in male Swiss mice subjected to HIOP model and cafeteria diet (CD).

View Article and Find Full Text PDF

Water pollution caused by ash from grassland fires alters the molecular, biochemical, and morphological biomarkers of non-biting midge larvae.

J Hazard Mater

December 2024

Post-graduation program in Ecology and Biodiversity Conservation, Federal University of Mato Grosso (UFMT), Mato Grosso, MT 78060-900, Brazil; Post-graduation program in Ecology. Department of Ecology and Zoology, Laboratory of Freshwater Biodiversity, Federal University of Santa Catarina (UFSC), Florianópolis, SC 88040-900, Brazil.

The frequency and intensity of wildfires have been increasing in many parts of the world, which may result in biodiversity loss. Wildfires can devastate plant communities, generating toxic ash that pollutes watercourses through runoff. However, our understanding of the effects of ash exposure on aquatic biodiversity is still limited.

View Article and Find Full Text PDF

Electrophysiological findings of brainstem auditory evoked potentials in infants with down syndrome: A systematic review and meta-analysis.

Int J Pediatr Otorhinolaryngol

December 2024

Department of Speech-Language Pathology, Graduate Program in Speech-Language Pathology, Federal University of Santa Catarina (UFSC), Florianópolis, SC, R. Eng. Agronômico Andrei Cristian Ferreira, s/n, 88040-900, Brazil. Electronic address:

Objective: to summarize the evidence on the electrophysiological findings in the auditory brainstem response (ABR) in infants with DS.

Material And Methods: This is a systematic review study, whose protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO CRD42023424139) and conducted in accordance with the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Observational studies were included: cross-sectional and cohort studies that performed ABR evaluation in infants with DS up to two years of age, which had their results compared with normal infants, of the same age group.

View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to assess how adding extra implants to mandibular overdentures affects oral health and patient satisfaction among edentulous patients.
  • Patients were split into two groups: one received a standard overdenture with two implants, while the other received an overdenture with two additional short implants for greater anchorage.
  • Results showed that while the extra implants did provide some benefits, they did not significantly improve overall patient satisfaction or quality of life compared to the standard implant setup.
View Article and Find Full Text PDF

This study investigates the effect of chloride levels on the mode of action of palladium complexes for the activation of propargyl- and allene-protected fluorophores and chemotherapeutic drugs through uncaging reactions. Four Pd(II) complexes were synthesized and characterized using various spectroscopic techniques to confirm their structure and electronic properties. Kinetic studies and density functional theory calculations revealed that chloride ions in phosphate buffered saline (PBS) significantly enhance catalytic efficiency, particularly for allenyl-protected substrates compared to propargylic counterparts.

View Article and Find Full Text PDF

Some native Chilean berries, including murtilla, have gained attention for their high phenolic content which renders them attractive for the beverage industry. However, phenolic-rich by-products are generated during the production of murtilla juice (murtilla pomace), and there has been no scientific consideration of this by-product as a source of different forms of phenolic compounds. The aim of this study was thus to obtain phenolic extracts from the soluble fraction (free, esterified, and etherified) of murtilla pomace as well from the counterpart that contains insoluble-bound compounds, and evaluate their antioxidant properties.

View Article and Find Full Text PDF

Seamless Transition to Post-Quantum TLS 1.3: A Hybrid Approach Using Identity-Based Encryption.

Sensors (Basel)

November 2024

Graduate Program on Computer Science, Department of Informatics and Statistics, Federal University of Santa Catarina (UFSC), Florianópolis 88040-370, SC, Brazil.

We propose a novel solution to streamline the migration of existing Transport Layer Security (TLS) protocol implementations to a post-quantum Key Encapsulation Mechanism for Transport Layer Security (KEMTLS). By leveraging Identity-Based Encryption (IBE), our solution minimizes the necessary modifications to the surrounding infrastructure, enabling the reuse of existing keys and certificates. We provide a proof-of-concept implementation and performance analysis, demonstrating the practical feasibility and effectiveness of our proposed approach.

View Article and Find Full Text PDF

This manuscript evaluated the performance of silanes in cementitious matrices in the partial replacement of superplasticizers by silanes. For this, pastes with a water/cement ratio of 0.186 were produced and the superplasticizer admixture based on polycarboxylate esters was partially substituted by three types of silanes-vinyltriethoxysilane silanes (VTES), n-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AEAPTMS), and methacryloxypropyltrimethox-ysilane (MCPTMS)-in two substitutions levels (20% and 40%), and then tested in Portland cement pastes.

View Article and Find Full Text PDF

Immediate effects of Kinesio Taping ® on respiratory parameters in healthy individuals.

J Bodyw Mov Ther

October 2024

Physiotherapy Department, University of Southern Santa Catarina (UNISUL), Palhoça, Santa Catarina, Brazil; Health Sciences Department, Federal University of Santa Catarina (UFSC), Araranguá, Santa Catarina, Brazil. Electronic address:

Background: Kinesio taping® (KT) could facilitate respiratory muscle contraction, improving breathing. Therefore, this study aimed to analyze the immediate effects of KT application on thoracoabdominal mobility, vital capacity, and respiratory muscle strength of healthy young individuals.

Methods: This clinical trial included 19 healthy individuals, measuring their maximum inspiratory and expiratory pressure, vital capacity, and thoracoabdominal mobility using cirtometry.

View Article and Find Full Text PDF

The jaboticaba is a fruit with a highly promising chemical profile for producing fermented products with biological activity. In this context, evaluating pre-fermentative maceration techniques in jaboticaba fermentations is essential to optimize the extraction of phenolic compounds and other metabolites of interest, imparting antioxidant characteristics to the product and offering potential health benefits. This study evaluated the impact of two pre-fermentative maceration techniques on the phenolic composition, bioaccessibility, and biological activities (α-amylase, α-glucosidase, and ACE inhibition) of alcoholic and acetic fermented products from jaboticaba.

View Article and Find Full Text PDF

Piezoresistive pressure sensors have been prepared by the electrospinning of poly(vinylidene fluoride) (PVDF) containing graphene nanoplatelets (GNP) functionalized using 1-butyl-3-methylimidazolium trifluoromethanesulfonate (BMIM(OTf)) ionic liquid (IL). Optical microscopy demonstrated that the functionalized GNP powder presented particles with a smaller lateral size. The obtained mats were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, differential scanning calorimetry, electrical resistivity using two and four probes, and electromechanical testing with up to 32 load-unload cycles.

View Article and Find Full Text PDF

Background: Diabetic animals often display dysregulated nitric oxide (NO) metabolism, contributing to vascular dysfunction. This study evaluates the metabolic and vascular effects of organic nitrate isosorbide mononitrate (ISMN) versus inorganic sodium nitrate (NaNO3) in mice with type 1 diabetes mellitus (T1DM) induced by streptozotocin (STZ).

Experimental Approach: T1DM was induced in male C57Bl6 mice with STZ ip and confirmed by fasting glucose.

View Article and Find Full Text PDF

To analyze mortality from head and neck cancer (HNC) in the State of Santa Catarina from 1979 to 2023. Ecological study of data available in the Mortality Atlas of the National Cancer Institute and in the Mortality Information System. Approximately 13,309 deaths due to HNC were recorded in the Mortality Atlas, considering the period from 1979 to 2021 and 11,027 deaths recorded in SIM in the period from 1996 to 2023.

View Article and Find Full Text PDF

Chemical and thermal modification of geopolymer for efficient dye removal.

Environ Monit Assess

November 2024

Graduate Program in Chemical Engineering (POSENQ), Department of Chemical Engineering and Food Engineering (EQA), Federal University of Santa Catarina (UFSC), Florianópolis, SC, 88040-900, Brazil.

In the pursuit of advancing sustainable wastewater treatment solutions in the industry, this study investigates the effect of chemical and thermal modifications on adsorbent geopolymer (GP) structure. Optimal conditions of sulfuric acid treatment and calcination temperature were determined to enhance the adsorption of the direct red dye 28 (DR28). Functional groups (FTIR), mineralogical composition (DRX), morphology (SEM-EDS), and physical properties (BET/BJH) were employed to study the effect of attack with HSO and calcination on GP characteristics.

View Article and Find Full Text PDF

Objective: The systematic review with meta-analysis aimed to verify the occurrence of a protective effect on hearing loss due to a higher intake of carotenoids, vitamins A, C, E, and folate present in diets.

Methods: The search for scientific articles was carried out by 2 independent researchers in electronic databases. Meta-analysis was performed by constructing summary risk measures for each vitamin or antioxidant, combining the risk ratios or adjusted odds ratios (OR) for the various variables observed in the highest categories of vitamin or antioxidant consumption.

View Article and Find Full Text PDF

Introduction: The most common hearing losses in the population are associated with genetic conditions, use of ototoxic substances or medications, infectious diseases, metabolic diseases and chronic ear diseases and the association of exposure to occupational risks or the natural aging process.

Objective: Verify the association between hearing loss in workers and metabolic diseases.

Method: Retrospective cross-sectional study with analysis of secondary data of subjects exposed to occupational noise and undergoing drug treatment for metabolic disease, attended in two occupational health clinics (C1 and C2) from January 2020 to December 2022, considering the data of reference examinations from the year 2005.

View Article and Find Full Text PDF

Vascular hamartoma is an abnormal development of endothelial tissue that rarely affects horses. Histopathological examination remains the gold standard for definitive diagnosis, yet the presence of abnormal vascular structures must be carefully differentiated from other vascular anomalies and neoplasms. This report describes two cases of vascular proliferation affecting the skin on the lateral side over the left tarsus and the dorsolateral region over the fetlock joint of two fillies.

View Article and Find Full Text PDF

Introduction: Interventions to treat speech-language difficulties in primary progressive aphasia (PPA) often use word accuracy as a highly comparable outcome. However, there are more constructs of importance to people with PPA that have received less attention.

Methods: Following Core Outcome Set Standards for Development Recommendations (COSSTAD), this study comprised: Stage 1 - systematic review to identify measures; Stage 2 - consensus groups to identify important outcome constructs for people with PPA (n = 82) and care partners (n = 91); Stage 3 - e-Delphi consensus with 57 researchers.

View Article and Find Full Text PDF

Introduction: This study aimed to analyze the effect of caffeine (CAF) intake on pulmonary oxygen uptake (V˙O2) kinetics, muscle fatigue, and physiological and perceptual parameters during severe-intensity cycling exercise.

Methods: Twelve physically active men (age: 26 ± 5 years; V˙O2peak: 46.7 ± 7.

View Article and Find Full Text PDF

Genetic polymorphisms and bruxism: A scoping review.

Sleep Med

December 2024

Brazilian Centre for Evidence-Based Research (COBE), Department of Dentistry, Federal University of Santa Catarina (UFSC), Florianópolis, Brazil.

Article Synopsis
  • - The study explores bruxism's complex origins, noting that both genetic and non-genetic factors contribute to its development, but the role of genetic markers is still not well understood.
  • - Researchers analyzed 21 reports, including 16 original studies, focusing on genetic associations with sleep bruxism (SB) and awake bruxism (AB), identifying 15 significant genetic polymorphisms across 11 genes.
  • - Findings suggest specific genes associated with SB (like serotonergic and dopaminergic pathways) and AB (like ACTN3 and ANKK1), indicating potential genetic influences but highlighting the need for further research.
View Article and Find Full Text PDF

The purpose of this study was to investigate the influence of the color of positioning guides on the CIEL*a*b* color coordinates of ceramic, resin composite and bovine tooth surfaces measured by a clinical spectrophotometer. Positioning guides (n=10) in different colors (translucent, purple, yellow, green and, blue) were made for each surface (ceramic, resin composite and bovine tooth). The CIEL*a*b* color coordinates were measured with the positioning guides and with no positioning guide (control group).

View Article and Find Full Text PDF
Article Synopsis
  • - The study examines the fibers from tucum, a palm species from the Atlantic Forest, and highlights their characteristics for potential uses in textiles and engineering applications.
  • - Techniques like SEM, FTIR, and tensile strength tests show that tucum fibers have high tensile strength, good dye affinity, and are comparable to cotton and linen.
  • - The findings suggest that tucum fibers are a renewable and sustainable material suitable for manufacturing high-quality products while promoting waste valorization.
View Article and Find Full Text PDF

Multienzyme Immobilization on PVDF Membrane via One-Step Mussel-Inspired Method: Enhancing Fouling Resistance and Self-Cleaning Efficiency.

Membranes (Basel)

September 2024

Department of Food and Chemical Engineering, Universidade Regional Integrada do Alto Uruguai e das Missões (URI), 1621 Sete de Setembro Av., Centro, Erechim 99709-910, Brazil.

Immobilizing different enzymes on membranes can result in biocatalytic active membranes with a self-cleaning capacity toward a complex mixture of foulants. The membrane modification can reduce fouling and enhance filtration performance. Protease, lipase, and amylase were immobilized on poly(vinylidene fluoride) (PVDF) microfiltration membranes using a polydopamine coating in a one-step method.

View Article and Find Full Text PDF
Article Synopsis
  • A eucalyptus essential oil-based nanoemulsion was created and tested for its antimicrobial effectiveness and toxicity on rabbit surface mucous cells.
  • The nanoemulsion had a small average particle size of about 100 nm and maintained good cell viability, indicating it was relatively safe.
  • It showed strong antimicrobial properties in both the nanoemulsion itself and in mouthwash formulations containing the nanoemulsion, suggesting potential applications in preventive dentistry for oral health.
View Article and Find Full Text PDF

Objectives: This systematic review was conducted to evaluate the applicability of the envelope (E) protein in the diagnosis of arboviruses.

Methods: This review was performed in accordance with the PRISMA statement. Five databases were explored (PubMed, Web of Science, Scopus, EMBASE, and IEDB).

View Article and Find Full Text PDF