Publications by authors named "Rodrigo M Silva"

Roux-en-Y gastric bypass (RYGB) involves creating a small stomach pouch, bypassing part of the small intestine, and rerouting the digestive tract. These alterations can potentially change the drug exposure and response. Our primary aim was to assess the impact of RYGB on the pharmacokinetics of simvastatin lactone (SV) and its active metabolite, simvastatin hydroxy acid (SVA).

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  • - The study aimed to establish and validate specific cutoff values for the systemic Juvenile Arthritis Disease Activity Score 10 (sJADAS10) to differentiate between various disease activity levels in children with systemic juvenile idiopathic arthritis.
  • - Researchers used data from 400 patients across multiple countries, applying different methods to determine these cutoffs, ensuring robust validation through comparison of physician assessments.
  • - The identified cutoffs were found to effectively separate inactive disease, minimal disease activity, moderate disease activity, and high disease activity, making them reliable for clinical use and research purposes.
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Hemophagocytic lymphohistiocytosis (HLH) is a rare genetic hyperinflammatory syndrome that occurs early in life. Macrophage activation syndrome (MAS) usually refers to a secondary form of HLH associated with autoimmunity, although there are other causes of secondary HLH, such as infections and malignancy. In this article, we reviewed the concepts, epidemiology, clinical and laboratory features, diagnosis, differential diagnosis, prognosis, and treatment of HLH and MAS.

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  • The study focused on 4,7-Dichloroquinoline (DCQ), exploring its synthetic derivatives and their potential biomedical applications.
  • Five DCQ derivatives were synthesized and analyzed using advanced mass spectrometry techniques alongside theoretical calculations to understand their behavior.
  • The research found that DCQ and its derivatives exhibited significant larvicidal activity against Aedes aegypti larvae, highlighting their potential for developing effective pest control products.
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Background: Lychnophora ericoides Mart, also known as the Brazilian arnica or fake arnica, belongs to the Asteraceae family. Leaves and roots are used in alcoholic and hydroalcoholic preparations for the treatment of wounds, inflammation, and pain.

Purpose: The present study aimed to investigate the effects of L.

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Licarin A, a dihydrobenzofuranic neolignan presents in several medicinal plants and seeds of nutmeg, exhibits strong activity against protozoans responsible for Chagas disease and leishmaniasis. From biomimetic reactions by metalloporphyrin and Jacobsen catalysts, seven products were determined: four isomeric products yielded by epoxidation from licarin A, besides a new product yielded by a vicinal diol, a benzylic aldehyde, and an unsaturated aldehyde in the structure of the licarin A. The incubation with rat and human liver microsomes partially reproduced the biomimetic reactions by the production of the same epoxidized product of 343 [M + H].

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Roux-en-Y gastric bypass is one of the most common surgical treatments for obesity due to the effective long-term weight loss and remission of associated comorbidities. Carvedilol, a third-generation β-blocker, is prescribed to treat cardiovascular diseases. This drug is a weak base with low and pH-dependent solubility and dissolution and high permeability.

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Background And Purpose: Cannabis legalization has risen in many countries, and its use during pregnancy has increased. The endocannabinoid system is present in the CNS at early stages of embryonic development, and regulates functional brain maturation including areas responsible for respiratory control, data on the influence of external cannabinoids on the development of the respiratory system and possible consequences during postnatal life are limited.

Experimental Approach: We evaluated the effects of prenatal exposure to synthetic cannabinoid (WIN 55,212-2 [WIN], 0.

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  • Multisystem Inflammatory Syndrome in Children (MIS-C) is a severe complication related to COVID-19 that appears in mainly healthy children following mild infections, but its genetic risk factors are not well understood.
  • Researchers conducted whole exome sequencing on 16 Brazilian patients with MIS-C, identifying ten rare genetic variants in eight specific genes that may increase the risk of developing this syndrome by affecting immune responses.
  • The study highlights the potential for genetic testing to understand individual variability in COVID-19 complications and suggests overlapping mechanisms between MIS-C, Kawasaki disease, and COVID-19, which could inform future treatment strategies.
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Unlabelled: Alcohol use disorder (AUD) is a worldwide public health problem, being an important aggravating factor of comorbidities found in the elderly, with the potential to increase mortality indicators for this age group.

Objective: To analyze alcohol-induced deaths in elderly people with alcohol-related disorder in Brazil between 1996 and 2019.

Methods: An ecological study was conducted with secondary data obtained from the Brazilian Unified Health System (SIM) Mortality Information System from 1996 to 2019.

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The growing use of phytotherapy in clinical practice arouses interest in studies using medicinal plants as active ingredients for new medicines. Ipomoea pes-caprae has a wide medicinal use in the treatment of inflammatory disorders, skin wounds, stings, and painful rheumatic processes. Assayed in this study are the physicochemical characterization of a gel developed with this extract and the evaluation of its anti-inflammatory and healing efficacy, in addition to its antiedematogenic action on Bothrops snake envenoming in mice.

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Dissatisfaction with body image is considered a relevant variable in understanding the mental health of adolescents. In this respect, the scope of this study was to evaluate the impact of this dissatisfaction on variables associated with the mental health of Brazilian students enrolled in the 9th year. To achieve this, the data from the 2015 National School Health Survey was used and the methodology applied was based on Propensity Score Matching (PSM).

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  • Human metabolomics studies typically identify only about 10% of the molecular features present in samples.
  • The authors propose a new method that uses reference data to match metabolomics tandem mass spectrometry (MS/MS) data against annotated source data, effectively creating a pseudo-MS/MS library.
  • This new approach significantly improves the usage of MS/MS spectra by 5.1 times compared to traditional methods, enabling better analysis of dietary patterns from untargeted metabolomic data.
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Objective: To identify the factors associated with burnout among professionals of a multidisciplinary team from an oncology hospital.

Method: This is a descriptive quantitative study that used a cross-sectional observational design. A sociodemographic, clinical, and professional questionnaire developed by the authors and three items from the Professional Quality of Life Scale were used for data collection.

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Enzymes related to sphingolipids metabolism has been suggested as altered in oral squamous cell carcinoma (OSCC). However, clinical relevance of diverse sphingolipids in OSCC is not fully known. Here, we evaluated sphingolipidomics in plasma and tumor tissues as a tool for diagnosis/prognosis in OSCC patients.

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Objective: To develop a standardized steroid dosing regimen (SSR) for physicians treating childhood-onset systemic lupus erythematosus (SLE) complicated by lupus nephritis (LN), using consensus formation methodology.

Methods: Parameters influencing corticosteroid (CS) dosing were identified (step 1). Data from children with proliferative LN were used to generate patient profiles (step 2).

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A variety of neuroactive flavonoids can be found in the species of the genus; however, their difficulty in crossing the blood-brain barrier limits their in vivo neuropharmacological activity. In this study, cationic nanoparticles were developed as a novel nanocarrier for improving the antidepressant activity of f. leaf extract.

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Objective: identify the stress level among nursing undergraduates and the associated sociodemographic and academic factors; to compare stress level among college students according to the training phase in the course.

Method: cross-sectional study with 286 university students. The instrument of sociodemographic and academic characterization and the stress scale were applied.

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Objective: To verify the association of stress factors and depressive symptoms with the academic performance of nursing students.

Method: Cross-sectional, quantitative, observational research conducted at a public university in Manaus. Socio-demographic data, academic performance coefficient and individual semester performance, the Instrument for the Assessment of Stress in Nursing Students and the CES-D Center for Epidemiologic Studies Depression Scale were used to characterize the students.

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Objective: To identify health alterations in nursing students after a year from admission to a nursing undergraduate course.

Method: A longitudinal prospective study with a quantitative approach was carried out in 2016 with first-year nursing students from two universities in the state of São Paulo. The following instruments were applied at the beginning and the end of the first school year: an instrument for Assessment of Stress in Nursing Students, the Center for Epidemiologic Studies Depression Scale, and the Pittsburgh Sleep Quality Index.

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Fipronil is a chiral insecticide employed worldwide in crops, control of public hygiene and control of veterinary pests. Humans can be exposed to fipronil through occupational, food, and environmental contamination. Therefore, the risk assessment of fipronil in humans is important to protect human health.

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The drying process is a step of ceramic brick production which requires the control of process variables to provide a final product with a porous uniform structure, reducing superficial and volumetric defects and production costs. Computational fluid dynamics (CFD) is an important tool in this process control, predicting the drying physical phenomenon and providing data that improve the industrial efficiency production. Furthermore, research involving CFD brick drying has neglected the effects of oven parameters, limiting the analysis only to the bricks.

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Myclobutanil is a chiral triazole fungicide that is employed worldwide. Although enantiomers have the same physical-chemical properties, they may differ in terms of activity, metabolism, and toxicity. This investigation consisted of in vitro enantioselective metabolism studies that employed a human model to assess the risks of myclobutanil in humans.

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