Publications by authors named "Rodrigo Barbosa"

Article Synopsis
  • The study focuses on the life cycle of a flesh fly found on pig and rat carcasses, examining its developmental stages at two different temperatures, 27 °C and 29 °C.
  • At lower temperature (27 °C), larvae develop more slowly, resulting in females laying eggs three times as often and for a longer duration compared to 29 °C.
  • Morphological analysis using scanning electron microscopy reveals no distinct hatching lines on the eggs, with detailed observations made on the structure of larval stages, highlighting differences in spiracles between first, second, and third instars.
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Objective: To examine the associations between self-reported screen time and symptoms of stress, anxiety, and depression in adolescents.

Methods: A cross-sectional study was conducted with 982 adolescents aged between 12 and 15 years, enrolled in public schools in Jacarezinho (PR), Brazil. Screen time was assessed by the question "Considering a typical day, how much time do you spend watching TV, playing videogame, using computer or smartphone?" The DASS-21 questionnaire (short form) was used to assess symptoms of depression, anxiety, and stress.

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Introduction: Farnesol, derived from farnesyl pyrophosphate in the sterols biosynthetic pathway, is a molecule with three unsaturations and four possible isomers. predominantly secretes the , -farnesol (, -FOH) isomer, known for its role in regulating the virulence of various fungi species and modulating morphological transition processes. Notably, the evolutionary divergence in sterol biosynthesis between fungi, including , and trypanosomatids resulted in the synthesis of sterols with the ergostane skeleton, distinct from cholesterol.

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Background: The management of acute respiratory failure during pregnancy is a poorly defined issue in the literature, especially regarding the use of the prone position and the appropriate time for delivery. This study describes our experience in treating pregnant and postpartum women with severe or critical coronavirus disease 2019 (COVID-19).

Materials And Methods: This descriptive retrospective study included 25 pregnant and 4 postpartum women admitted to an ICU due to respiratory complications from COVID-19 from June 2020 to August 2021.

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Article Synopsis
  • The Amazonian region features diverse environments, including savannas, which make up about 5% of the Amazon biome in Brazil, yet its insect biodiversity is largely unexplored.
  • A study conducted in four Brazilian Amazon savannas documented 40 species of flesh flies, including two new species (Lepidodexia (Notochaeta) helenae and Lipoptilocnema augustoi) and a first-ever record for Brazil (Oxysarcodexia graminifolia).
  • Several other species previously unrecorded in the Brazilian Amazon were also documented, with a redescribed species (Dexosarcophaga paulistana) featuring detailed illustrations of male terminalia.
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Article Synopsis
  • A new species of fly, Neoscutops rungae sp. nov., has been identified in the Brazilian Amazon, based on three specimens (two males and one female).
  • It was reared from nests made by a specific ant species, Azteca aff. chartifex.
  • This species is part of the rotundipennis group, which now includes five recognized species, and can be identified by its distinctive dark brown face and unique features of the surstylus.
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This trial aims to investigate the effects of the ActTeens physical activity program, on adolescents' physical activity level, health-related fitness, cardiometabolic and mental health. The trial will aim to recruit ~140 adolescents (aged 13-14 years). Participants will be randomized into either intervention or control groups.

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Objectives: To assess the improvement on oral health-related quality of life (OHRQoL) of individuals with cervical dentin hypersensitivity (CDH) with the noncarious cervical lesion (NCCLs) subjected to different treatments.

Material And Methods: A single-blind randomized clinical trial was conducted with patients (n = 74) randomly allocated into three groups according to the treatment performed: PO, potassium oxalate (Oxa-Gel BF); LL, low-power laser irradiation; and POLL, potassium oxalate (Oxa-Gel BF) associated with low-power laser irradiation. The treatments were applied in four steps, weekly.

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Article Synopsis
  • Nitrogen fertilization is crucial for enhancing pasture growth and animal performance in tropical livestock systems, with the study focused on Panicum maximum cv. Mombaça guinea grass under different nitrogen levels (100, 200, and 300 kg N/ha/year).
  • The highest nitrogen application (N300) resulted in increased herbage mass and maximum protein digestibility, yet also showed diminishing returns on weight gain relative to nitrogen input as levels rose.
  • While higher nitrogen levels improved economic returns, the most efficient investment was between N100 to N200, yielding USD 3.73 for every dollar spent, in contrast to only USD 1.60 for moving from N200 to N300.
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Neobenedenia melleni, a marine fish ectoparasite, is responsible for considerable losses in the mariculture industry. In maintaining the parasite's homeostasis, sterols are structural and functional lipids that perform vital functions. Thus, understanding the mechanisms of biosynthesis and the uptake of sterols can reveal potential pharmacological targets.

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The photocatalytic discoloration of industrial dyes, Novacron blue (NB) and Novacron yellow (NY), was investigated using composites based on TiO and natural palygorskite (Pal-Ti10 and Pal-Ti30). The method consisted of synthesizing the composites starting from a physical mixture of TiO and natural palygorskite in the presence of alcohol, for impregnation through calcination under conditions of temperature equal to 450 °C and atmospheric air. The characterization techniques used in this work were FTIR, XRD, XRF, SEM, particle size analysis and zeta potential.

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Antimicrobial-resistant bacteria were isolated from muscoid dipterans collected at five different areas of Rio de Janeiro city, in proximity to hospitals. Extracts obtained by maceration of flies were diluted and used as inocula for different culture media, with or without antibiotic (ceftriaxone 1 mg/L) supplementation. Purified isolates were submitted to antimicrobial susceptibility testing (AST).

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Background: In the last decade, the number of cardiac electronic devices has risen considerably and consequently the occasional need for their removal. Concurrently, the transvenous lead removal became a safe procedure that could prevent open-heart surgery.

Objective: The primary objective of this study was to describe the successful performance and the complication rates of pacemaker removals in a Brazilian public hospital.

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Introduction: The prevalence of appendiceal endometriosis ranges from 0.4% to 22%. The carcinoid tumor is the most common neoplasm of the appendix, with incidence ranging from 0.

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With omics data being generated at an unprecedented rate, genome-scale modelling has become pivotal in its organisation and analysis. However, machine learning methods have been gaining ground in cases where knowledge is insufficient to represent the mechanisms underlying such data or as a means for data curation prior to attempting mechanistic modelling. We discuss the latest advances in genome-scale modelling and the development of optimisation algorithms for network and error reduction, intracellular constraining and applications to strain design.

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Sesamoiditis secondary to gout is an extremely rare condition with few case reports in the literature. It is an important differential diagnosis because the treatment depends on targeted therapy, unlike the main causes of sesamoiditis that often involves immobilization with special orthoses and prescription of anti-inflammatory drugs. We report here a case of a 38-year-old male, athlete, with bipartite medial sesamoid, who had insidious pain in the base of the left hallux.

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Article Synopsis
  • The study aimed to assess how effective different treatments are for cervical dentin hypersensitivity (CDH) in patients with non-carious cervical lesions (NCCLs).
  • A total of 74 participants were divided into three groups: those using potassium oxalate, those treated with a low-power laser, and those receiving a combination of both treatments, with sensitivity measured over three weeks using specific tests.
  • Results showed that potassium oxalate was particularly effective for immediate relief of CDH, but after multiple treatments, all methods resulted in similar levels of improvement.
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Background: Cerebral thromboembolism is a potentially devastating complication of atrial fibrillation (AF) and atrial flutter (AFl). The use of transesophageal echocardiogram (TEE) before electrophysiological procedures in anticoagulated patients is variable. Our objective was to determine the incidence and identify predictors of intracardiac left atrial appendage (LAA) thrombus on TEE in patients with AF/AFl before electrical cardioversion or ablation.

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Ethnopharmacological Relevance: Baccharis trimera (Less.) DC is a perennial subshrub, popularly known as "carqueja," that belongs to the Asteraceae family. Ethnobotanical studies indicate that this species is used for the treatment of diabetes and digestive and liver diseases.

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Chronic Chagas heart disease has different clinical manifestations including arrhythmias, heart failure, and stroke. Chest pain is one of the most common symptoms and when associated with changes in the electrocardiogram, such as T-wave changes, electrically inactive areas, and segmental wall motion abnormalities, may lead to a misdiagnosis of acute coronary syndrome (ACS). Here, we describe two patients with Chagas heart disease and syncope due to sustained ventricular tachycardia who were misdiagnosed with ACS, and discuss the role of novel imaging modalities in the differential diagnosis and risk stratification.

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The objective of this study was to evaluate the effects of the inclusion of different levels of licuri cake on the consumption of dry matter and nutrients and ingestive behavior of feedlot crossbred steers. Forty-four crossbred steers with an average age of 24 months and a mean live weight of 358.19 ± 41.

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We here report 35 Agromyzidae species and their associations with host-plants in the state of Pará. We describe the new species Ophiomyia falcifera sp. nov.

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Study Objective: To validate the algorithm for selective bowel surgery based on preoperative imaging by comparing the perioperative outcomes of patients who undergo each type of bowel surgery for deep bowel disease, and secondarily to evaluate the incidence, factors, and subsequent outcomes when the actual procedure performed deviated from the preoperative surgical plan.

Design: Retrospective study comparing 3 surgical interventions in an intention-to-treat analysis.

Setting: Tertiary care hospital.

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A 43-year-old man presented after ventricular fibrillation cardiac arrest with evidence of pre-excited atrial fibrillation. Electrophysiology study with guideline-directed testing demonstrated a low risk accessory pathway effective refractory period, which became high-risk with isoproterenol infusion. This case represents a challenging scenario wherein a high-risk pathway may be misclassified using the currently indicated methods of risk stratification.

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