Publications by authors named "Alvares A"

Purpose: Craniofacial morphology is integral to Sleep Breathing Disorders (SBD), particularly Obstructive Sleep Apnea (OSA), informing treatment strategies. This review assesses the utility of two-dimensional (2D) photogrammetry in evaluating these metrics among OSA patients.

Methods: Following PRISMA guidelines, a systematic review was conducted.

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Background: Photobiomodulation (PBM) is indicated to accelerate the recovery of athletes and reduce muscle damage caused by physical exercise. The objective of this study was to establish the best time to apply photobiomodulation to increase the functional performance and ergogenic response of rugby athletes.

Methods: Randomized crossover clinical trial with 18 rugby athletes of both sexes.

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Introduction: Clinical trials on tyrosine kinase inhibitors (TKI) treatment have shown an improvement in overall and progression-free survival in patients with advanced differentiated thyroid cancer. However, it is necessary to evaluate these studies to assess methodological biases and inconsistencies that may impact the effects.

Objective: To map and assess the methodological quality of randomized clinical trials (RCTs) regarding randomization, allocation concealment, blinding, and selective reporting bias.

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Context: Olive leaf extract (OLE) is rich in phenolic compounds, which are known for their health benefits. Cardiovascular diseases, primarily coronary heart disease and stroke, are leading causes of mortality globally.

Objective: This systematic review aimed to assess the impact of OLE on cardiometabolic risk factors in adults.

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Amphibian skin secretions are abundant in bioactive compounds, especially antimicrobial peptides. These molecules are generally cationic and rich in hydrophobic amino acids, have an amphipathic structure and adopt an α-helical conformation when in contact with microorganisms membranes. In this work, we purified and characterized Figainin 1, a novel antimicrobial and antiproliferative peptide from the cutaneous secretion of the frog .

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Objective: To analyze the association of care practices performed by obstetric professionals with maternal welfare/malaise levels.

Method: A quantitative study conducted in a Prepartum/Childbirth/Postpartum Unit of a Teaching Hospital with puerperal women who underwent vaginal births. An association was performed between obstetric practices and maternal welfare/malaise levels.

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Bioactive plant peptides have received considerable interest as potential antihypertensive agents with potentially fewer side effects than antihypertensive drugs. Here, the blood pressure-lowering effects of the Bowman-Birk protease inhibitor, BTCI, and its derived peptides, PepChy and PepTry, were investigated using normotensive (Wistar-WR) and spontaneously hypertensive rats (SHR). BTCI inhibited the proteases trypsin and chymotrypsin, respectively, at 6 µM and 40 µM, a 10-fold greater inhibition than observed with PepTry (60 µM) and PepChy (400 µM).

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In recent years, the number of new antimicrobial drugs launched on the market has decreased considerably even though there has been an increase in the number of resistant microbial strains. Thus, antimicrobial resistance has become a serious public health problem. Amphibian skin secretions are a rich source of host defense peptides, which generally are cationic and hydrophobic molecules, with a broad-spectrum of activity.

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Background: Esophagogastroduodenoscopy is a preoperative examination commonly required for candidates to bariatric surgery (BS). Overweight individuals have a greater risk of cardiorespiratory complications during endoscopy under sedation. This study aimed to investigate the feasibility, tolerance, and cardiovascular stress of transnasal endoscopy (TNE) without sedation in obese patients eligible for BS.

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Background: The Human Cytomegalovirus (HCMV) has infected more than 90% of the world population and its prevalence can be related to the individuals geographical and socialeconomic status. Serological tests based on ELISA are pivotal for HCMV diagnosis. Due to the lack of standardization in the production/purification of antigens from viral preparations, ELISA tests are based on several recombinant proteins or peptides.

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Objective: To analyze the practice of obstetric nurses operating in a prenatal/delivery/postpartum unit of a university hospital in Mato Grosso and the maternal welfare resulted from the care provided in this scenario.

Method: Study with a quantitative approach, carried out in a prenatal/delivery/postpartum unit of a university hospital in Cuiabá, Mato Grosso. The data were collected through the Scale of Maternal Welfare in Delivery Situation 2, and the study included 104 recent mothers in the period from June to September 2016.

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In efforts to find new antimicrobial peptides (AMPs), we studied the skin secretion of the endemic Colombian frog Dendropsophus columbianus belonging to a genus that has not been investigated previously. From HPLC-fractionated secretion, we identified one peptide with slightly antibacterial activity. Its peptide sequence showed no sequence similarity to current annotated peptides.

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A current metagenomics focus is to interpret and transform collected genomic data into biological information. By combining structural, functional and genomic data we have assessed a novel bacterial protein selected from a carbohydrate-related activity screen in a microbial metagenomic library from Capra hircus (domestic goat) gut. This uncharacterized protein was predicted as a bacterial cell wall-modifying enzyme (CWME) and shown to contain four domains: an N-terminal, a cysteine protease, a peptidoglycan-binding and an SH3 bacterial domain.

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Objective:: to evaluate the care provided at an Antepartum, Intrapartum, Postpartum (AIP) unit at a teaching hospital following the inclusion of obstetric nurses.

Method:: transversal study, performed at a AIP unit at a teaching hospital in the capital of the Brazilian state of Mato Grosso. The sample comprised data regarding the 701 childbirths that took place between 2014 and 2016.

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Two endo-β-1,4-xylanases named XylT1 and XylT2, previously purified from Aspergillus terreus, were structurally investigated by fluorescence quenching and characterized with respect to their binding properties with phenolic compounds. Neutral and charged quenchers had access to both enzymes in neutral and alkaline pHs. The greatest access was noted for the negative quencher, possibly due to positive amino acid residues in the vicinity of tryptophan.

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Optimization of cellulose enzymatic hydrolysis is crucial for cost effective bioethanol production from lignocellulosic biomass. Enzymes involved in cellulose hydrolysis are often inhibited by their end-products, cellobiose and glucose. Efforts have been made to produce more efficient enzyme variants that are highly tolerant to product accumulation; however, further improvements are still necessary.

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B-1 lymphocytes comprise a unique subset of B cells that differ phenotypically, ontogenetically and functionally from conventional B-2 cells. A frequent specificity of the antibody repertoire of peritoneal B-1 cells is phosphatidylcholine. Liposomes containing phosphatidylcholine have been studied as adjuvants and their interaction with dendritic cells and macrophages has been demonstrated.

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Hepatitis B is a liver inflammation caused by hepatitis B virus (HBV) and can be diagnosed in clinical stage by hepatitis B core antibody from IgM class (anti-HBcIgM). Hepatitis B core antibody from IgG class (Anti-HBcIgG) appears quickly after IgM, reaching high titers in chronic hepatitis, and remains even after cure. Since hepatitis B core antibody (anti-HBc) is the first antibody identified and sometimes the only marker detected during the course of infection, it can be used both to indicate HBV acute infection (anti-HBc-IgM) and to identify individuals who have come into contact with the virus (anti-HBc-IgG).

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Recognizing the invasive potential of the dermatophytes and understanding the mechanisms involved in this process will help with disease diagnosis and with developing an appropriate treatment plan. In this report, we present the histopathological, microbiological and immunological features of a model of invasive dermatophytosis that is induced by subcutaneous infection of Trichophyton mentagrophytes in healthy adult Swiss mice. Using this model, we observed that the fungus rapidly spreads to the popliteal lymph nodes, spleen, liver and kidneys.

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We report a case of a child with neonatal Marfan syndrome who was submitted for clinical and surgical treatment with good late outcome 9 years after the first cardiac operation.

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Objectives: Evidence from the literature that inflammation is a systemic biological phenomenon prompted us to investigate whether inoculation of different irritants to the footpad of mice might influence the kinetics of resident peritoneal cells.

Methods: Mice were inoculated in the footpad at different time intervals with Mycobacterium bovis bacillus Calmette-Guerin (BCG), Ehrlich ascitic tumor cells or lipopolysaccharide (LPS), and resident peritoneal cells were analyzed by flow cytometry.

Results: The results indicate that different stimuli induced different responses in resident peritoneal cells.

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An extracellular alpha-amylase (Amy1) whose gene from Cryptococcus flavus was previously expressed in Saccharomyces cerevisiae was purified to homogeneity (67 kDa) by ion-exchange and molecular exclusion chromatography. The enzyme was activated by NH(4) (+) and inhibited by Cu(+2) and Hg(+2). Significant biochemical and structural discrepancies between wild-type and recombinant α-amylase with respect to K(m) values, enzyme specificity, and secondary structure content were found.

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Many works have shown that the enhanced susceptibility to infection seen in diabetic patients can be related to the hyperglycemia-hypoinsulinemia (HH) observed in this condition. Herein, we evaluated the HH effects on the morphofunctional features of the thymus as well as on dermatophytic infection. We demonstrated that, not only the HH condition but also the dermatophytic infection induced transitory alterations in the thymus; it was characterized by loss of cortical-medullar definition and disorganization of the extracellular matrix.

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Background: Oral squamous cell carcinoma (OSCC) is a frequent neoplasm, which is usually aggressive and has unpredictable biological behavior and unfavorable prognosis. The comprehension of the molecular basis of this variability should lead to the development of targeted therapies as well as to improvements in specificity and sensitivity of diagnosis.

Results: Samples of primary OSCCs and their corresponding surgical margins were obtained from male patients during surgery and their gene expression profiles were screened using whole-genome microarray technology.

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