Publications by authors named "Fabio Santos"

is a vector responsible for the transmission of various arboviruses and is considered by the World Health Organization to be one of the main public health problems in the world. This study evaluated the larvicidal and oviposition activity of essential oils from , and and their formulations. Chromatographic analysis by GCMS identified a total of 28, 52 and 18 compounds for the oils of the species , and , respectively.

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  • - The study aimed to evaluate how stable a hip resurfacing prosthesis is in dog cadaver femurs using various biomechanical tests.
  • - Twenty canine femurs were tested, with one femur receiving the prosthesis and the other remaining intact; the tests measured load capacity and displacement during stress.
  • - Results showed that the prosthesis had lower maximum load and load at collapse values compared to intact femurs, but similar behavior in terms of displacement and stiffness, indicating some limitations in the prosthesis's performance.
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  • Fluorescent molecules are essential in biomedicine for visualizing biological processes with high sensitivity and specificity, but customizing them for live cell imaging is challenging due to complex structural and photophysical interactions.
  • This study used multivariate linear free-energy relationships (mLFER) to optimize a new platform of fluorescent dyes called BASHY, which are derived from boronic acid and salicylidenehydrazone.
  • The research resulted in a predictive model for a novel BASHY dye, which demonstrated effective stability in live cell experiments and was tested successfully in zebrafish larvae.
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Rationale: Despite the existing anatomical and physiological evidence pointing to the involvement of orexinergic projections from the lateral hypothalamus (LH) in regulating fear-related responses, little is known regarding the contribution of the orexin system in the prelimbic cortex (PL) on contextual fear.

Objectives: We investigated the role of orexin-A (Orx) and orexin type 1 receptors (OrxR) in the PL during the expression of contextual conditioned fear in mice.

Methods: Neural tract tracing of the LH-PL pathway and OrxR immunoreactivity in the PL of C57BL/6 male mice were performed.

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Paclobutrazol, a fungicide of the triazole class, is widely used as an inducer of early flowering and fruiting by inhibiting gibberellin formation. However, biological assays using model organisms to evaluate their cytogenotoxic and mutagenic potential are still scarce. Therefore, this study aimed to investigate the effects of the commercial product Cultar® 250 SC (CP) and the pure substance (PBZ) on the germination and initial seedling development of Lactuca sativa L.

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The aim of this study was to evaluate the in vitro cytotoxic, genotoxic, and mutagenic potential and to determine the in silico ADME parameters of two synthetic β-carboline alkaloids developed as prototypes of antitumor agents (NQBio-06 and NQBio-21). Additionally, acute toxicity of the compounds was evaluated in mice. The results from the MTT assay showed that NQBio-06 presented higher cytotoxicity in the ovarian cancer cell line TOV-21 G (IC = 2.

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  • Thyrinteina arnobia is an invasive pest originally from America known to affect Eucalyptus plantations, but there's limited information on its population diversity and ecology in Brazil.
  • A study showed that T. arnobia has low genetic diversity across Brazil, with distinct mitochondrial haplogroups in different regions, indicating pest outbreaks are localized and not due to long-distance spread.
  • Climate factors like isothermality and annual rainfall are key to T. arnobia's distribution, suggesting it could pose a threat to Eucalyptus forests both in Brazil and in other tropical and subtropical areas around the world.
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Humans have been using plants in the treatment of various diseases for millennia. Currently, even with allopathic medicines available, numerous populations globally still use plants for therapeutic purposes. Although plants constitute a safer alternative compared to synthetic agents, it is well established that medicinal plants might also exert adverse effects.

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Adverse events (AEs), and particularly adverse drug events (ADEs), represent a health problem as they can cause permanent damage or death. Understanding the frequency, location, and causes of ADEs can prevent harm to patients. The Global Trigger Tool, produced by the Institute for Healthcare Improvement (GTT/IHI), is widely used to identify AEs.

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  • Bagaza virus (BAGV) is a mosquito-borne flavivirus primarily transmitted through wild birds and Culex mosquitoes, with known susceptibility in specific bird species like red-legged partridges and ring-necked pheasants.
  • In September 2023, a group of seven dead Eurasian magpies were discovered in southern Portugal, coinciding with previously found BAGV-positive birds in the same area.
  • Testing confirmed that the magpies were positive for BAGV, showing that they may serve as a new host and amplifying factor for the virus, which is actively circulating in the region.
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This literature review explores cutting-edge microencapsulation techniques designed to enhance the antimicrobial efficacy of essential oils in dairy products. As consumer demand for natural preservatives rises, understanding the latest advancements in microencapsulation becomes crucial for improving the shelf life and safety of these products. The bibliometric analysis utilized in this review highlighted a large number of documents published on this topic in relation to the following keywords: essential oils, AND antimicrobials, AND dairy products, OR microencapsulation.

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Computer-aided manufacturing (CAM) technology allows the use of different manufacturing techniques. This in vitro study aimed to evaluate the marginal fit of temporary restorations manufactured using conventional chairside methods, milling, and three-dimensional printing. Fifteen 3-element temporary restorations specimens were produced and categorized into three groups: non-digital, obtained using the conventional chairside method (GC); milled (GM); and three-dimensionally printed (GP).

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Natural killer (NK) cells play a crucial role in the immune system's response against cancer. However, the challenge of obtaining the required quantity of NK cells for effective therapeutic response necessitates the development of strategies for their ex vivo expansion. This study aimed to develop a novel feeder cell line, K562.

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  • Myelodysplastic syndromes (MDS) are blood disorders marked by irregularities in myeloid cells and low blood cell counts, often caused by genetic mutations, though classification has mostly focused on cell appearance.
  • A study analyzing genomic data from over 3,200 MDS patients identified 16 distinct molecular subtypes, revealing varied clinical outcomes, with the majority of patients (86%) fitting into specific genetic groups linked to different survival rates.
  • The findings suggest that understanding these genetically defined subgroups can enhance MDS classification and inform future treatment strategies, emphasizing the importance of genetic insight in managing the disease.
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Sand flies are vectors of great public health importance, since they constitute a group of hematophagous insects responsible for etiological agents transmission of zoonotic diseases such a visceral leishmaniasis. In face of the expansion of these diseases, efficient control strategies are needed which depend on comprehending the sand fly eco-epidemiology. In this regard, MALDI-TOF mass spectrometry has been used for bacteria, fungi and yeast detection studies through peptide/protein profiles.

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The study aimed to conduct in vitro biological assessments of hydantoin and thiohydantoin compounds against mature Schistosoma mansoni worms, evaluate their cytotoxic effects and predict their pharmacokinetic parameters using computational methods. The compounds showed low in vitro cytotoxicity and were not considered hemolytic. Antiparasitic activity against adult S.

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This work investigated the fermentation kinetics and characteristics of goat yogurt supplemented with bovine whey protein isolate (WPI) (0%, 2.5% and 5.0%) subjected to high shear dispersion (HSD) assisted by ultrasound (US).

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This research aims to evaluate the efficiency of cavitary varnishes containing experimental bioglasses in the occlusion of dentinal tubules. One hundred and sixty-eight cervical buccal dentin samples were obtained from bovine teeth. Samples were randomized into the following groups: I.

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  • This study examined how effective a drug-modified tissue conditioner is for treating denture stomatitis in Wistar rats infected with Candida albicans.
  • Rats wore contaminated devices for 4 days, after which different treatments, including antifungal agents nystatin and chlorhexidine, were added to tissue conditioners, showing a notable reduction in microbial presence.
  • Results indicated that integrating antifungal agents into soft tissue conditioners can significantly improve treatment outcomes for denture stomatitis.
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Natural products are usually considered harmless; however, these substances need to be consumed with caution. Biological assays with plant models are a suitable alternative for prospective studies to assess natural product-initiated toxicity. The aim of this study was to examine the toxic potential of leaf and flower extracts derived from L.

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  • Mutations in the UBA1 gene, which are linked to VEXAS syndrome, have been found in patients with myelodysplastic syndromes (MDS), with a study identifying 7% of a cohort having specific UBA1 mutations.
  • An additional sequencing analysis of a larger group revealed 1% with other potentially harmful variants, and all 40 identified patients with likely/pathogenic mutations were male with various MDS subtypes.
  • Most patients with UBA1 mutations exhibited symptoms consistent with VEXAS syndrome, suggesting that routine screening for UBA1 mutations should be considered in MDS management.
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Malnutrition is considered one of the major public health problems worldwide and negatively affects the growth, development and learning of schoolchildren. This study developed and evaluated a fermented milk drink with added Umbu (Spondias tuberosa) pulp in the weight gain and renutrition of mice submitted to malnutrition by calorie restriction, and in malnourished children. The supplementation with this fermented milk drink contributed to an increase of 7.

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Background: Various surgical approaches have been employed to manage gingival recession, including subepithelial connective tissue grafting, which has yielded favorable outcomes.

Methods And Results: We present the case of a 17-year-old patient who developed gingival recession on tooth #6 following an esthetic crown lengthening procedure. The recession was treated with a subepithelial connective tissue graft; however, this case details the occurrence of two epithelial cysts adjacent to the region subjected to the surgical procedure, 6 months after surgery.

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This study investigated the age at first calving in Holstein heifers and its impact on various production parameters. A sample of 737 Holstein heifers born between 2015 and 2018 and finishing their first lactations between 2018 and 2020 was included. Cluster analysis revealed three groups based on age at first calving: high precocity, medium precocity and low precocity.

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