Publications by authors named "Nascimento D"

Background: Drooling, defined as the unintentional loss of saliva from the anterior oral cavity, remains poorly understood in terms of the underlying clinical factors in people with Parkinson's disease (PwP). This study aims to clarify these factors by analyzing predictors and secondarily the correlates with the severity of drooling in PwP.

Methods: We conducted a cross-sectional study involving 42 PwP with drooling and 59 without drooling.

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Macrophages play a crucial role in immune responses and undergo metabolic reprogramming to fulfill their functions. The tetramerization of the glycolytic enzyme pyruvate kinase M2 (PKM2) induces the production of the anti-inflammatory cytokine interleukin (IL)-10 in vivo, but the underlying mechanism remains elusive. Here, we report that PKM2 activation with the pharmacological agent TEPP-46 increases IL-10 production in LPS-activated macrophages by metabolic reprogramming, leading to the production and release of ATP from glycolysis.

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Many cancer patients have their main tumors surgically removed with the goal of curing them, or as part of palliative care. When a patient receives general anesthesia, the side effects of the administered chemotherapy regimens must be considered, especially those that may have significant repercussions during anesthetic care. The aim of this study is to review the existing literature to identify adverse effects of chemotherapy and known interactions between chemotherapy and anesthetic drugs, analyze the mechanisms underlying these interactions, and discuss relevant clinical implications.

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The dengue virus, a member of the family Flaviviridae, is transmitted by mosquitoes and causes a viral disease known as dengue fever that is prevalent in tropical and subtropical regions. It is estimated that there are 100-400 million new infections every year, with underreporting due to limited surveillance systems. The presentation ranges from asymptomatic to dengue shock syndrome.

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The sweetpotato whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), is a polyphagous pest recognized as composed of several cryptic or sibling species. The Middle East-Asia Minor 1 (MEAM1) and the Mediterranean (MED) putative species are invasive and destructive worldwide. The MEAM1 is established throughout the United States, while MED is documented in 27 states.

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Article Synopsis
  • Cryptococcosis, caused by environmental fungi, leads to severe pneumonia and systemic infections, especially in immune-compromised individuals, with rising cases seen in immunocompetent hosts due to strain R265.* -
  • The study investigates the roles of cytokines IL-22 and IL-23 in managing lung health during R265 infections, revealing their importance in preserving lung barrier integrity and preventing excessive damage.* -
  • Findings indicate that IL-22 helps control neutrophil activity and promotes eosinophil presence in the lungs, providing crucial insights into immune response and tissue management during aggressive cryptococcal infections.*
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Leaf litter is an important component related to nutrient cycling and conservation of soil biodiversity. In this context, the objective of our study was to investigate the relationship between soil and leaf litter in different forest communities in sub-regions of the Pantanal (Nhecolândia and Abobral/Miranda). To this end, we collected soil and leaf litter samples from 152 sample plots divided in physiognomies regionally called as Cordilheira, Capão, Murundu, Corixo and Cambará/Canjiqueira forest.

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  • - Malaria is a leading cause of mortality, particularly among children in sub-Saharan Africa, and this study aimed to examine the characteristics and treatment outcomes of malaria in children at a hospital in Gabon.
  • - Conducted from February to May 2023, the study included 306 febrile children, revealing a malaria prevalence of 17.3%, with common symptoms including high fever, chills, and nausea.
  • - Findings indicated significant issues with self-medication and non-compliance to preventive measures, complicating treatment efforts, often requiring intravenous care for severe cases.
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  • The Aussie Current (AC) is a type of electrical current used for pain relief, muscle strengthening, and increasing torque, but its effectiveness is still debated.
  • This systematic review analyzed 21 studies to evaluate the impact of AC on pain, muscle strength, torque, comfort, and functionality, finding a mix of low and high-quality evidence.
  • The prevailing frequency used was 1 kHz, yet the diversity in study methodologies indicates a need for more research to confirm AC's benefits.
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The diamondback moth (DBM), is the main pest of Brassicas crops worldwide, and its recorded resistance to 101 active ingredients indicates it is difficult to control. The purpose of this study was to investigate the hypothesis that has fitness costs associated with its resistance to lufenuron, a chitin-synthesis inhibitor insecticide. Thus, concentration-mortality bioassays were performed for susceptible (REC-S), resistant (BZR-R) populations, their progenies F1 and F1', and one established population without selection pressure (BZR-Rns) after four generations.

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The conservation of the predatory ladybird beetle, (Germar) after its release also relies on its resistance and the performance of its progenies. When resistant individuals are released or evolve in the field through mating with susceptible pairs, we anticipate that they will generate a resistant progeny, inheriting the resistance to lambda-cyhalothrin through an autosomal mechanism. The susceptibility of a field-collected population (EcGA) was characterized and determined by the performance of their progenies generated through mating with a resistant parent (EcViR).

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Nitric oxide (NO) holds promise for wound healing due to its antimicrobial properties and role in promoting vasodilation and tissue regeneration. The local delivery of NO to target cells or organs offers significant potential in numerous biomedical applications, especially when NO donors are integrated into nontoxic viscous matrices. This study presents the development of robust cellulose nanofibril (CNF) hydrogels designed to control the release of nitric oxide (NO) generated from a NO-donor molecule (-nitrosoglutathione, GSNO) obtained from the nitrosation of its precursor molecule glutathione (GSH).

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Background: Heterotopic pregnancy and amniotic embolism are rare conditions that can be challenging to diagnose. To date, there are no cases of heterotopic pregnancy associated with amniotic embolism described in the literature. Therefore, we report the case of a pancreatic heterotopic pregnancy, which led to amniotic embolism and an unfavorable maternal outcome.

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Hybrid 3D constructs combining different structural components afford unique opportunities to engineer functional tissues. Creating functional microvascular networks within these constructs is crucial for promoting integration with host vessels and ensuring successful engraftment. Here, we present a hybrid 3D system in which poly (ethylene oxide terephthalate)/poly (butylene terephthalate) fibrous scaffolds are combined with pectin hydrogels to provide internal topography and guide the formation of microvascular beds.

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  • Many statistical and machine learning models for binary data assume that the data is well-balanced, which can lead to inaccurate predictions when it’s not.
  • To solve this issue, researchers suggest using asymmetric link functions in binary regression instead of traditional ones like logit or probit.
  • This study introduces new classification functions based on the Lomax distribution, showing that these models, particularly the reverse power double Lomax, outperform traditional methods in handling imbalanced data, providing clearer differentiation in predictive probabilities.
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Oxygenation of hydrocarbons offers versatile catalytic routes to more valuable compounds, such as alcohols, aldehydes, and ketones. Despite the importance of monometallic copper-oxygen species as hydroxylating agents in biology, few synthetic model compounds are known to react with hydrocarbons, owing to high C-H bond dissociation energies. To overcome this challenge, the photoredox chemistry of monometallic copper (pyrazolyl)borate complexes coordinated by chlorate has been explored in the presence of C-C alkanes with BDEs ≥ 93 kcal/mol.

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Metallo dithiolene complexes with biological and catalytic relevance are well-known for having strong metal-ligand covalency, which dictates their valence electronic structures. We present the resonant sulfur Kβ (1s3p) X-ray emission spectroscopy (XES) for a series of Ni and Cu bis(dithiolene) complexes to reveal the ligand sulfur contributions to both the occupied and unoccupied valence orbitals. While S K-edge X-ray absorption spectroscopy played a critical role in identifying the covalency of the unoccupied orbitals of metal dithiolenes, the present focus on XES explores the occupied density of states.

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Purpose: To explore artificial intelligence's impact on surgical education, highlighting its advantages and challenges.

Methods: A comprehensive search across databases such as PubMed, Scopus, Scientific Electronic Library Online (SciELO), Embase, Web of Science, and Google Scholar was conducted to compile relevant studies.

Results: Artificial intelligence offers several advantages in surgical training.

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Epithelial-to-mesenchymal transition (EMT) is crucial for tumor progression, being linked to alterations in the extracellular matrix (ECM). Understanding the ECM's role in EMT can uncover new therapeutic targets, yet replicating these interactions in vitro remains challenging. It is shown that hybrid hydrogels of alginate (ALG) and cell-derived decellularized ECM (dECM), with independently tunable composition and stiffness, are useful 3D-models to explore the impact of the breast tumor matrix on EMT.

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Dronedarone (DRN) is a clinically used drug to mitigate arrhythmias with multichannel block properties, including the sodium channel Na1.5. Extracellular acidification is known to change the pharmacological properties of several antiarrhythmic drugs.

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S-Limonene (s-Lim) is a monocyclic monoterpene found in a variety of plants and has been shown to present antioxidant and cardioprotective activity in experimental models of myocardial infarction. The aim of this study was to evaluate the potential mechanism by which s-Lim exerts its antiarrhythmic effect, focusing on the blockade of β-adrenoceptor (β-AR) and its effects on various in vivo and in vitro parameters, including electrocardiogram (ECG) measurements, left ventricular developed pressure (LVDP), the β-adrenergic pathway, sarcomeric shortening and L-type calcium current (I). In isolated hearts, 10 μM of s-Lim did not alter the ECG profile or LVPD.

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α-Lipoic acid (LA) is an antioxidant of endogenous production, also obtained exogenously. Oxidative stress is closely associated with hypertension, which causes kidney injury and endothelial dysfunction. Here, we evaluated the cardiovascular and renal effects of LA in the two-kidney-one-clip (2K1C) hypertension model.

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