242 results match your criteria: "University of Pernambuco (UPE)[Affiliation]"

Arthropod-borne viral diseases are acute febrile illnesses, sometimes with chronic effects, that can be debilitating and even fatal worldwide, affecting particularly vulnerable populations. Indigenous communities face not only the burden of these acute febrile illnesses, but also the cardiovascular complications that are worsened by urbanization. A cross-sectional study was conducted in an Indigenous population in the Northeast Region of Brazil to explore the association between arboviral infections (dengue, chikungunya, and Zika) and cardiac biomarkers, including cardiotrophin 1, growth differentiation factor 15, lactate dehydrogenase B, fatty-acid-binding protein 3, myoglobin, N-terminal pro-B-type natriuretic peptide, cardiac troponin I, big endothelin 1, and creatine kinase-MB, along with clinical and anthropometric factors.

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Background: Fluoxetine, a serotonin reuptake inhibitor antidepressant, raises extracellular serotonin levels and promotes angiogenesis and neurogenesis. Numerous animal models have shown its beneficial effects on recovery from peripheral nerve injury.

Purpose: The primary objective of this study was to analyze the influence of fluoxetine on the sensory-motor function recovery of the sciatic nerve in Wistar rats after axonotmesis.

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New leishmanicidal products are needed for the treatment to be effective, since current drugs are toxic to healthy human/animal cells and have low efficacy against the parasite. Bioactive compounds from microalgae, such as lectins, can be explored as new anti-Leishmania candidates. This study aimed to evaluate the cytotoxic and anti-Leishmania action of the cell extract (CE) and lectin (CVU) from Chlorella vulgaris biomass.

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Mosquito vectors such as . are responsible for the transmission of arboviruses that have a major impact on public health. Therefore, it is necessary to search for ways to control these insects, avoiding the use of conventional chemical insecticides that are proven to be toxic to nature.

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Article Synopsis
  • - The study aimed to evaluate the resilience of individuals with traumatic spinal cord injuries using two specific resilience scales (CD-RISC-10 and RS-14) and to assess the relationship between resilience and various demographic factors.
  • - Conducted with 254 adults, the research found that the average resilience scores were moderate, with significant correlations between the two scales, but no associations with sociodemographic factors like gender or income.
  • - The findings highlight the importance of understanding resilience in spinal cord injury patients to improve care but indicate that resilience levels aren't influenced by common demographic variables.
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Proteases are a large group of enzymes in high demand due to their wide and different biotechnological applications mainly in the biomedical field. Ultrasound (US) has been used successfully in several Bioprocesses in biotechnology, such as in the upregulation of enzymatic hydrolysis (biocatalysis). The objective of this work was to purify an enzyme from Streptomyces parvulus and to characterize it through physic-chemical applications including ultrasound effect.

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  • The study investigates the use of natural products as disinfectants for PMMA dentures, focusing on their potential to prevent denture stomatitis in wearers.
  • After reviewing literature, 46 studies were selected that assessed 39 different natural products for their effectiveness against Candida albicans, with 43 showing positive results.
  • The findings indicate that while natural products, especially those from plants, are promising in lab settings, more clinical research is needed to confirm their effectiveness in real-world scenarios involving denture users.
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  • Schistosomiasis mansoni (SM) leads to periportal fibrosis (PPF) due to inflammation from parasite eggs, resulting in collagen and matrix protein buildup in the liver.
  • The study involved 242 individuals infected with S. mansoni in Pernambuco, Brazil, assessing the link between MMP-3 gene polymorphism (-1171 5A>6A) and PPF, alongside various sociodemographic factors.
  • Findings revealed no significant link between MMP-3 polymorphism and PPF; however, male gender and age over 41 were identified as predictors for the hepatosplenic form of the disease.
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This scoping review aimed to assess immunohistochemical markers associated with the physiopathogenesis of Persistent Apical Periodontitis. The protocol was adapted from the Joanna Briggs Institute Reviewer's Manual (2017) and reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines for Scoping Reviews. A total of 239 articles were considered potentially eligible, and their full texts read by two reviewers.

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Employing machine learning for advanced gap imputation in solar power generation databases.

Sci Rep

October 2024

Polytechnic School of Engineering (POLI-UPE), Postgraduate Program in Systems Engineering, University of Pernambuco (UPE), Recife, Brazil.

Article Synopsis
  • The research focuses on using advanced machine learning algorithms like Random Forest and Gradient Boosting to fill in missing data in solar energy generation databases, which helps improve green hydrogen production systems.
  • Random Forest outperforms other models, achieving high accuracy with strong predictive metrics like a mean absolute error (MAE) of 0.0364 and an R² of 0.9779, making it more effective than traditional models like linear regression.
  • The study highlights the importance of robust data imputation methods for enhancing the efficiency of photovoltaic systems and emphasizes their role in optimizing renewable energy technologies and resource management.
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Background: Temporomandibular disorders (TMDs) are conditions that involve the temporomandibular joints, masticatory muscles, and associated tissues, causing orofacial pain. Central sensitisation (CS) is a relevant part of the TMD pathophysiology. Migraine, psychological aspects, parafunctional oral habits and widespread pain are commonly associated with both TMD and CS and could confound the association between them.

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  • The study evaluated the indirect cytotoxicity of two concentrations of nano silver fluoride (NSF) compared to various cariostatic agents using dentin discs from human molars.
  • Dentin discs were divided into seven groups, treated with different substances, and then assessed for cellular viability and mineralization effects.
  • Results indicated that both concentrations of NSF did not harm the MDPC-23 cells and showed similar cell activity to the positive control, while other agents negatively impacted mineralization.
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  • Chagas disease, caused by Trypanosoma cruzi, has acute and chronic phases, with chronic Chagas cardiomyopathy being the most notable, and there's a potential link between vitamin D deficiency and cardiovascular issues.
  • The study aimed to assess the effects of vitamin D on blood cells from patients with various chronic forms of Chagas disease by measuring cytokine production in vitro.
  • Results indicated that vitamin D treatment influenced cytokine production, showing distinct changes among patients, though no statistically significant differences were found among the groups.
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Statement Of Problem: Three-dimensional printing is a rapid and cost-effective method that eliminates material waste during the manufacture of indirect restorations. Parameters such as print angle significantly affect the physical properties of the printed material. Several manufacturers suggest using an angle of 45 degrees to perform printing; however, different angles have been used, and the optimum parameters are unclear.

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Aims And Background: To evaluate the effect of sleeping in the lateral decubitus position on the average thickness of the retinal nerve fiber layer (RNFL) in the peripapillary region of the optic nerve since the effect of posture on intraocular pressure (IOP) and glaucoma progression is not yet sufficiently understood.

Materials And Methods: A cross-sectional observational study was carried out with 40 volunteers who preferably slept in a right lateral decubitus (RLD) (RLD group = 20) and left lateral decubitus (LLD) (LLD group = 20) position. IOP was measured in both eyes, first in the sitting position and again after 10 minutes in a supine position, right lateral, and LLD, respectively.

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Leishmaniases, a group of neglected tropical diseases caused by an intracellular parasite of the genus Leishmania, have significant impacts on global health. Current treatment options are limited due to drug resistance, toxicity, and high cost. This study aimed to develop nanostructured lipid carriers (NLCs) for delivering Citrus sinensis essential oil (CSEO) and its main constituent, R-limonene, against leishmaniasis.

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Purpose: The purpose of this diagnostic study was to assess the accuracy and time efficiency of a digital method to draw the denture foundation extension outline on preliminary casts compared with the conventional technique.

Materials And Methods: A total of 28 preliminary edentulous casts with no anatomical landmarks were digitized using a laboratory scanner. The outlining of the entire basal seat of the denture was performed on preliminary casts and digitized.

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In this paper, we investigate a scenario in which protected and unprotected services coexist in an elastic optical network under dynamic traffic. In the investigated scenario, unprotected services can reuse the reserved idle bandwidth to provide protection to the protected services. Under this scenario, we propose a new heuristic algorithm that enables such reuse as well as define and introduce a new assignment problem in elastic optical networks, named a Transmission Spectrum Assignment (T-SA) problem.

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Background: The DNA mismatch repair (MMR) system serves as a sophisticated guardian of the precise functioning of the human genome. Dysregulation within this system is linked to the oncogenesis process. Reduced expression of MMR system proteins identified in salivary gland tumors (SGTs) suggests an increased risk of tumoral occurrence.

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Acute Effects of Breaking up Sitting Time With Isometric Wall Squat Exercise on Vascular Function and Blood Pressure in Sedentary Adults: Randomized Crossover Trial.

J Cardiopulm Rehabil Prev

September 2024

Author Affiliations: Department of Rehabilitation Sciences, Universidade Nove de Julho (UNINOVE), São Paulo, São Paulo, Brazil (Ms Silva, Mr O. Silva, and Drs Ritti-Dias, Correia, and Farah); Graduate Program in Physical Education, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil (Ms Silva and Dr Farah); University of Pernambuco (UPE), Recife, Pernambuco, Brazil (Dr Menêses); School of Psychology and Life Sciences, Canterbury Christ Church University, Kent, United Kingdom (Dr O'Driscoll); Department of Physical Education, Federal Rural University of Pernambuco (UFRPE), Recife, Pernambuco, Brazil (Dr Farah).

Purpose: The World Health Organization has recommended breaking up sitting time to improve cardiovascular health. However, whether isometric exercise can be effectively used as a strategy to break up sitting time remains unclear. Thus, the aim of this study was to analyze the acute effects of breaking up prolonged sitting with isometric wall squat exercise (IWSE) on vascular function and blood pressure (BP) in sedentary adults.

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Aneurysmal bone cyst is a rare osteolytic lesion of uncertain etiology, commonly observed in the lower limbs, with only 1-2% of reports in gnathic bones. We present the case of a 27-year-old male patient referred to the oral and maxillofacial surgery and traumatology service due to complaints of paresthesia in the mental region and increased mandibular volume. Physical examination revealed midline shift and hard consistency.

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In silico prediction of ADMET parameters and in vitro evaluation of antioxidant and cytotoxic activities promoted by indole-thiosemicarbazone compounds.

An Acad Bras Cienc

June 2024

Federal of Pernambuco, Department of Antibiotics, Laboratory of Chemistry and Therapeutic Innovation, Avenida Professor Moraes Rego, s/n, Iputinga, 50670-901 Recife, PE, Brazil.

Cancer is a complex and multifactorial disease characterized by uncontrolled cell growth and is one of the main causes of death in the world. This work aimed to evaluate a small series of 10 different indole-thiosemicarbazone compounds as potential antitumor agents. This is a pioneering study.

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