355 results match your criteria: "University of Paraiba UFPB[Affiliation]"

The discovery of antibiotics has significantly transformed the outcomes of bacterial infections in the last decades. However, the development of antibiotic resistance mechanisms has allowed an increasing number of bacterial strains to overcome the action of antibiotics, decreasing their effectiveness against infections they were developed to treat. This study aimed to evaluate the antibacterial activity of synthetic coumarins Staphylococcus aureus in vitro and analyze their interaction with the MepA efflux pump in silico.

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Introduction: Universal single-shade composite resins are characterized by a property that enables the creation of restorations that mimic tooth structure to the extent possible with fewer shades of color.

Objectives: This study aimed to instrumentally and visually evaluate the color correspondence of two single-shade composite resins in extracted human teeth multishade composite resins.

Methods: Upper central incisors and upper and/or lower molars with intact buccal surfaces were selected.

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The aim of this study was to investigate the association of single-nucleotide polymorphisms (SNPs) and the DNA methylation profiles of the DNA methyltransferase () gene family with oral mucositis in children and adolescents with hematologic malignancies treated with methotrexate (MTX). The population was comprised of healthy and oncopediatric patients aged between 4 and 19 years. An evaluation of oral conditions was performed using the Oral Assessment Guide.

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Thermal stress index for native sheep.

J Therm Biol

July 2023

Postgraduate Program in Veterinary Medicine, Department of Veterinary Medicine, Federal University of Campina Grande (UFCG), Avenue Universitária, s/n - Santa Cecilia, Patos, PB, 58708-110, Brazil.

Article Synopsis
  • The study aimed to create a thermal stress index for sheep using environmental and animal data from various conditions in a climate chamber.
  • The research involved analyzing 3,024 physiological data points to determine the best index for assessing sheep thermal comfort by comparing it to existing indices.
  • A new heat stress index (TSI) was developed and showed strong correlations, indicating it effectively reflects sheep's responses to environmental changes.
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Oxidative stability of white striping chicken breasts: effect of cold storage and heat treatments.

Poult Sci

August 2023

Department of Food Engineering, Graduate Program of Food Science and Technology, Technology Center, Federal University of Paraiba (UFPB), João Pessoa, Paraiba, 58051-900, Brazil. Electronic address:

This study aimed to investigate the level of lipid and protein oxidation in poultry breasts with severe white striping (WS; striation thickness > 1 mm) and nonaffected meats (N; normal breast) during storage under refrigeration (1°C for 14 d) and freezing (-18°C for 90 d). WS presented higher lipid content, although no difference in protein content was detected, compared to normal broiler breast (N). Regarding oxidative damages, a reduction in malondialdehyde and carbonyl protein, hexanal, octanal and nonanal levels, alongside the interaction of these compounds with other compounds in raw, roasted, and reheated breasts was observed under refrigerated storage (14 d).

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Extra virgin coconut oil ( L.) intake shows neurobehavioural and intestinal health effects in obesity-induced rats.

Food Funct

July 2023

Experimental Nutrition Laboratory, Department of Nutrition, Federal University of Paraíba (UFPB), Cidade Universitária, s/n-Castelo Branco III, João Pessoa, Paraíba, Brazil.

The present study aimed to evaluate the effect of E-VCO on the neurobehaviour and intestinal health parameters of obesity-induced rats, focusing on food consumption, body composition, bacterial and faecal organic acids and histological analyses in the hippocampus and colon. A total of 32 male Wistar rats were randomized into healthy (HG, = 16) and obese groups (OG, = 16), which consumed a control or cafeteria diet for eight weeks, respectively. After this period, they were subdivided into four groups: healthy (HG, = 8); healthy treated with E-VCO (HGCO, = 8); obese (OG, = 8); obese treated with E-VCO (OGCO, = 8), continuing for another eight weeks with their respective diets.

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Isothermal titration calorimetry (ITC) as a promising tool in pharmaceutical nanotechnology.

Int J Pharm

June 2023

Keizo Asami Institute (iLIKA), Federal University of Pernambuco (UFPE), Av. Prof. Moraes Rego, Cidade Universitária, Recife, PE, Brazil; Laboratory of Nanotechnology, Biotechnology and Cell Culture (NanoBioCel), Academic Center of Vitória, Federal University of Pernambuco (CAV/UFPE), R. Alto do Reservatório, Alto José Leal, Vitória de Santo Antão, PE 55608-680, Brazil. Electronic address:

Isothermal titration calorimetry (ITC) is a technique for evaluating the thermodynamic profiles of connection between two molecules, allowing the experimental design of nanoparticles systems with drugs and/or biological molecules. Taking into account the relevance of ITC, we conducted, therefore, an integrative revision of the literature, from 2000 to 2023, on the main purposes of using this technique in pharmaceutical nanotechnology. The search were carried out in the Pubmed, Sciencedirect, Web of Science, and Scifinder databases using the descriptors "Nanoparticles", "Isothermal Titration Calorimetry", and "ITC".

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Objective: The purpose of this study was to assess feasibility, reliability, and validity of a new performance-based test, the Shoulder Performance Activity Test (SPAT).

Methods: People with shoulder pain (n = 93) and without shoulder pain (n = 43) were included. The SPAT consists of overhead reach, hand behind head, and hand behind back tasks, each performed with 20 repetitions and rated by time, pain, and effort.

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Influence of brushing motions on the shaping of oval canals by rotary and reciprocating instruments.

Clin Oral Investig

July 2023

Postgraduate Program in Dentistry, University of Grande Rio (UNIGRANRIO), Rua Professor José de Souza Herdy, 1160, Duque de Caxias, Rio de Janeiro, RJ, 25071-202, Brazil.

Objective: The effects of brushing on shaping with three different instruments were assessed in oval canals.

Design: Mandibular incisors were assigned to 6 groups (n = 12/group) according to the system, each one with or without brushing: Reciproc Blue, VDW.Rotate, and Race EVO.

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Ameliorating the antiparasitic activity of the multifaceted drug ivermectin through a polymer nanocapsule formulation.

Int J Pharm

May 2023

Graduate Program in Applied Cellular and Molecular Biology, University of Pernambuco (UPE), 50100-130 Recife, PE, Brazil; Aggeu Magalhães Institute (IAM), Oswaldo Cruz Foundation (FIOCRUZ), 50670-420 Recife, PE, Brazil. Electronic address:

Article Synopsis
  • Ivermectin (IVM) is a powerful antiparasitic drug whose effectiveness is limited by low oral bioavailability, prompting the development of new formulations.
  • This study successfully created poly(ε-caprolactone) (PCL) nanocapsules containing IVM, incorporating pumpkin seed oil (PSO) for improved solubility and stability.
  • The optimized nanocapsules showed high encapsulation efficiency, maintained stability over time, and exhibited reduced toxicity alongside enhanced antiparasitic activity against Strongyloides venezuelensis compared to free IVM.
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Maternal high-fat diet alters the neurobehavioral, biochemical and inflammatory parameters of their adult female rat offspring.

Physiol Behav

July 2023

Laboratory of Experimental Nutrition, Department of Nutrition, Federal University of Paraíba, UFPB, João Pessoa, PB CEP: 58051-900, Brazil; Post Graduate Program in Nutrition Sciences, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil; Post Graduate Program in Food Science and Technology, Federal University of Paraíba (UFPB), João Pessoa, Paraíba, Brazil. Electronic address:

Background: Lipid metabolism dysregulations have been associated with depressive and anxious behaviors which can affect pregnant and lactating individuals, with indications that such changes extend to the offspring. Therefore, the aim of this study was to evaluate the effect of a maternal high-fat diet on the neurobehavioral, biochemical and inflammatory parameters of their adult female offspring.

Methods: Wistar rats ± 90 days old were mated.

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The indiscriminate use of oral ferrous sulfate (FeSO) doses induces significant oxidative damage to health. However, carotene-rich foods such as buriti oil can help the endogenous antioxidant defense and still maintain other body functions. This study aimed to assess the effects of buriti oil intake in iron-overloaded rats by FeSO administration.

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Bovine leptospirosis causes economic losses and raises public health concerns. It is possible that there are peculiarities in the epidemiology of leptospirosis in regions with a semiarid climate, such as the Caatinga biome in Brazil, where the climate is hot and dry, and the etiological agent require alternative routes of transmission. This study aimed to close knowledge gaps to the diagnosis and epidemiology of spp.

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Purpose: This study aimed to identify the prevalence of obstructive sleep apnea (OSA) and associated risk factors globally.

Methods: Six databases and registrations and three grey databases were explored for observational field research. Independently and impartially paired reviewers selected research, gathered data, and evaluated the methodological quality.

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Objective: To compare the cortical auditory evoked potential responses pre-and post-Auditory Musical Training associated with hearing aid adaptation in elderly people with presbycusis.

Design: This is a pilot, prospective, randomized, single-blind study.

Study Sample: Eight presbiacusis elderly people between 65 and 80 years, new hearing aid users, divided into two groups participated in the study: Hearing Aid Group: use of hearing aid; and Auditory Training Group: use of hearing aid in addition to musical auditory training for 16 sessions.

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Introduction: Thiophene derivatives have been widely studied as promising options for the treatment of solid tumors. Previous studies have shown that thiophene derivatives have antileishmanial activity and cytotoxic activity against breast, colon, and ovarian cancer cells.

Methods: In our study, we evaluated the anticancer activities of three aminothiophene derivatives: SB-44, SB-83, and SB-200, in prostate and cervical adenocarcinoma cells.

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Article Synopsis
  • The rise of antibiotic-resistant Gram-negative pathogens poses a significant public health risk, particularly from bacteria like Escherichia coli and Klebsiella pneumoniae.
  • Polymyxins, once seen as a last-resort treatment for these resistant infections, are now facing their own resistance issues after frequent use, notably with the emergence of the mcr gene in 2015.
  • This study aims to review the incidence of the mcr gene in Brazil, analyzing its prevalence in various regions, sample types, and bacterial species.
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Objective: To evaluate the thermocycling effect of 3D-printed resins on flexural strength, surface roughness, microbiological adhesion, and porosity.

Materials And Methods: 150 bars (8 × 2 × 2 mm) and 100 blocks (8 × 8 × 2 mm) were made and divided into 5 groups, according to two factors: "material" (AR: acrylic resin, CR: composite resin, BIS: bis-acryl resin, CAD: CAD/CAM resin, and PRINT: 3D-printed resin) and "aging" (non-aged and aged - TC). Half of them were subjected to thermocycling (10,000 cycles).

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The gaining popularity of tobacco and nicotine delivery products, such as electronic cigarettes (e-cigarettes) being perceived as relatively safe is of a medical concern. The long-term safety of these new products remains uncertain for oral health. In this study, in vitro effects of e-liquid were assessed in a panel of normal oral epithelium cell lines (NOE and HMK), oral squamous cell carcinoma (OSCC) human cell lines (CAL27 and HSC3), and a mouse oral cancer cell line (AT84) using cell proliferation, survival/cell death, and cell invasion assays.

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Trans-Caryophyllene (TC), a sesquiterpene, with proven biological activities, which in this work was tested alone, encapsulated in liposomes and associated with Fluconazole in vitro in an attempt to enhance the effect of the drug. Liposomes were characterized from vesicle size, polydispersity index, and Zeta potential, and imaging by scanning electron microscopy. Antifungal assays were performed against Candida albicans, Candida tropicalis and Candida krusei by microdilution to determine the IC values and the viability curve.

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Malícia honey produced by the jandaíra bee has hypoglycaemic and hypolipidemic effects and antioxidant activity in vitro and in vivo, which makes it potential adjuvant treatment for obesity. This study aimed to evaluate the effects of malícia honey on somatic and biochemical parameters, depressive-like behaviour and anti-inflammatory activity in obese rats. A total of 40 adult male Wistar rats were initially randomized into a healthy group (HG, n = 20) that consumed a control diet, and an obese group (OG, n = 20) which consumed a cafeteria diet for eight weeks.

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Unlabelled: The Juçara fruit ( Martius) has been progressively standing out for presenting significant biological and nutritional activity. Its functional characteristics are related to its high content of anthocyanins, which, when isolated, are highly unstable, limiting their applications. The present research proposed to obtain an anthocyanin-rich extract from the juçara pulp, microencapsulate it with the maltodextrin and beta-cyclodextrin (beta-CD) matrices and evaluate the stability of the microencapsulated anthocyanins against light, pH, and milk development fermented.

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Reviewing the relationship between organizational performance, dynamic capabilities and strategic behavior.

SN Bus Econ

December 2022

Scholarship CNPq Research Productivity (1D Level) and Professor, Faculty of Economics, Administration and Accounting, Federal University of Alagoas (UFAL), Maceió, 57072-900 Brazil.

Current business challenges mean that understanding elements that can affect organizational performance represents a differential factor in maintaining competitiveness. In this context, the objective of this article is to conduct a Systematic Literature Review (SLR) of the relationship between dynamic capabilities, strategic behavior, and organizational performance. For this, A three-stage SLR protocol was used: (i) planning, (ii) conduct, and (iii) knowledge development.

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Oxidative stress significantly compromises the production efficiency of laying hens. It has been reported in literature that selenium (Se) in poultry diets has a positive effect on mitigating these effects. This study has been carried out to evaluate the effects of Se supplementation in feeds, from either an inorganic or a hydroxy-selenomethionine (OH-SeMet) source, on the performance and physiological traits of 50- to 70-wk-old Dekalb Brown laying hens under heat stress, and on their egg quality after different storage durations.

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As hydroenergetic losses are inherent to water supply systems, they are a frequent issue which water utilities deal with every day. The control of network pressure is essential to reducing these losses, providing a quality supply to consumers, saving electricity and preserving piping from excess pressure. However, to obtain these benefits, it is necessary to overcome some difficulties such as sensing the pressure of geographically distant consumer units and developing a control logic that is capable of making use of the data from these sensors and, at the same time, a good solution in terms of cost benefit.

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