548,852 results match your criteria: "Brazil;Institute of Biomedical Sciences ICB andNational Institute for Translational Neuroscience INNT[Affiliation]"

Growth and Development of Larvae of Two Species of Neotropical Diptera (Chironomidae) Under Laboratory Conditions.

Neotrop Entomol

January 2025

Programa de Pós-Graduação Em Biologia de Ambientes Aquáticos Continentais, Instituto de Ciências Biológicas, Lab de Limnologia, Univ Federal Do Rio Grande, Rio Grande, RS, Brazil.

Chironomidae have a wide distribution in Neotropical aquatic ecosystems and are predominant in the macroinvertebrate biota of these ecosystems, such as shallow lakes and swamps. In recent years, there has been a notable increase in research efforts aimed at understanding the biology of chironomid, and research on the bionomy of this group is still limited. Therefore, the objective of this study was to describe the growth and development of Chironomus calligraphus and Goeldichironomus holoprasinus, maintained under controlled laboratory conditions.

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This study aimed to evaluate the effectiveness of bioactive toothpastes in remineralizing eroded enamel surfaces in vitro. Bovine enamel blocks (n = 48) were obtained and classified into untreated, demineralized, and treated areas. Specimens were randomly classified into six groups (n = 8 each): fluoride-free toothpaste (NCT), Colgate Total 12 (PCT), Sensodyne Repair and Protect (SRP), Sensodyne Pronamel (SPE), Regenerador + Sensitive (RGS), and RGS/calcium booster (RCB).

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The aim of this study was to perform a clinicopathological analysis of oral squamous cell carcinoma (OSCC) in young patients from the northeast of Brazil and compare with elderly individuals. This retrospective study reviewed 104 OSCC cases from 2000 to 2015, focusing on patients under 40 and over 60 at diagnosis. Forty-two patients under 40 years old (40.

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This study aimed to evaluate the effects of fiberglass posts on fracture behavior in endodontically treated teeth (ETT) restored with composite veneers. Adult patients who had endodontically treated anterior teeth restored with composite veneers, with or without fiberglass posts, were divided into the case (with fractured teeth) and control (without fractured teeth) groups. All fracture patterns were sorted by a 6-point scoring system: 0, no fracture; 1, veneer buccal fracture; 2, incisal edge fracture; 3, coronal middle-third fracture; 4, coronal cervical fracture; 5, coronal and root fracture; and 6, root fracture.

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This study evaluated some physicochemical properties of an experimental tricalcium silicate-based cement (ETSC) indicated for use as pulp capping or endodontic repair material; Biodentine (BD) and White MTA-Angelus (MTA) cements served as comparators. Setting time, radiopacity, sorption, and solubility were determined according to ISO 6876/2012 and compressive strength according to ISO 9917-1/2019. pH and calcium ion release capacity were also assessed.

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The objective of this study was to evaluate Brazilian dental researchers' perceptions of research integrity and open science practices, as well as their perceptions of the way researchers are evaluated for promotion, hiring, and receiving grants. In a self-administered online survey, the respondents were presented with 3 questions on researcher evaluation in Brazil. Additionally, for 25 academic activities or characteristics, researchers rated their perceived importance for a) career advancement, b) science advancement, c) personal satisfaction, and d) social impact.

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Dental appointments in the primary health care setting for users with toothache: a longitudinal analysis.

Braz Oral Res

January 2025

Universidade Federal de Minas Gerais - UFMG, School of Dentistry, Department of Preventive and Community Dentistry, Belo Horizonte, MG, Brazil.

This study aimed to estimate the morbidity associated with toothache treated in the primary health care (PHC) setting, stratified by the population size of Brazilian municipalities, from 2018 to 2022. This longitudinal ecological study was based on public national data from routine public dental service utilization records within the Health Information System for Primary Care. These data were employed to compute the rate of dental appointments for users with toothache (per 1,000 users) within each municipality throughout 15 four-month periods (P1-2018 to P3-2022), classified by population size.

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To exclusively evaluate, in vitro, the efficacy of five intracanal medicaments against Candida albicans and Enterococcus faecalis in infected single-rooted primary teeth. Forty-three teeth were selected, out of which 42 were simultaneously contaminated with C. albicans and E.

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The study aimed to investigate oral potentially malignant disorders (OPMDs) diagnosed in an Oral Pathology service in southern Brazil over a span of 56 years and to assess the factors influencing their severity and outcomes. A retrospective analysis of histopathological records from 1965 to 2021 was performed. Lesions diagnosed as leukoplakia, erythroplakia, leukoerythroplakia, or actinic cheilitis were included.

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The aim of this study was to investigate the effect of thermogenic supplementation on the bone tissue of rats subjected to orthodontic movement. A total of 38 male Wistar rats underwent orthodontic movement of the left permanent maxillary first molars for 21 days. The rats were assigned to three groups: Control group: water; Thermogenic 1: C4 Beta Pump thermogenic; or Thermogenic 2: PRE-HD/Pre-workout.

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Oral cancer immunology: state of the art and future perspectives.

Braz Oral Res

January 2025

Universidade Federal do Rio Grande do Sul - UFRS, School of Dentistry, Department of Oral Pathology, Porto Alegre, RS, Brazil.

Oral cancer is a multifactorial disease involving genetic, epigenetic, and environmental factors. The literature indicates that inflammatory cells at the advancing front of the tumor induce a host immune response, preventing the spread of the tumor. However, cancer cells adopt various continued strategies to circumvent this immune surveillance.

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The aim of this study was to assess roughness profile and surface roughness after simulated toothbrushing cycles, as well as the degree of conversion (DC) of bulk-fill resin composites at different depths. Forty nine composite discs were made from three low-viscosity bulk-fill resins (Filtek Bulk-Fill Flowable/3M Oral Care - FBF, Beautifil-Bulk Flowable/Shofu Inc. - BBF and Surefill SDR Flow/Dentsply Caulk - SDR), three high-viscosity bulk-fill resin composites (Filtek Bulk-Fill Restorative/3M Oral Care - FBR, Beautifil-Bulk Restorative/Shofu Inc.

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This study evaluated the survival probabilities of two lithia-based glass-ceramics after final crystallization in a microwave furnace using conventional crystallization as a reference. Disc-shaped samples of a lithium silicate (LS, Celtra Duo) and a lithium disilicate (LD, e.max CAD) were prepared and divided into two groups according to the crystallization method (n = 30): microwave (M) or conventional furnaces (C).

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This systematic review aims to provide preclinical evidence of the antimicrobial efficacy of natural endodontic solutions (NES) compared to sodium hypochlorite (NaOCl) and chlorhexidine (CHX) against Enterococcus faecalis. The study followed the PRISMA guidelines and had a registered protocol (PROSPERO - CRD42021224022). The inclusion criteria comprised ex vivo studies simulating root canal irrigation to assess the standardized mean difference of colony-forming units (CFUs).

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Background: Obesity is a significant risk factor for chronic kidney disease (CKD), with metabolic bariatric surgery offering potential renal benefits. However, there is limited comparative data on the impact of Roux-en-Y gastric bypass (RYGB) versus laparoscopic sleeve gastrectomy (LSG) on renal function in individuals with obesity without end-stage renal disease (ESRD). The objective of this study was to compare renal function outcomes following RYGB and LSG in patients with obesity, focusing on estimated glomerular filtration rate (eGFR), serum creatinine, albumin-creatinine ratio (ACR), and serum cystatin C.

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Neck circumference (NC) is a predictive measure for the diagnosis of Metabolic Syndrome (MS). The aim of the present study was to establish cutoff points for NC as a predictor of the presence of MS in Brazilian rural workers, based on the MS components according to the IDF and NCEP-ATP III criteria. This is a cross-sectional study carried out with rural workers in the municipality of Santa Maria de Jetibá, in the state of Espírito Santo, Brazil.

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A new analytical method was developed for the determination of 14 multiclass emerging organic contaminants in surface waters using LC-MS, and Dispersive Liquid-Liquid Microextraction (DLLME) for extraction. Different Natural Deep Eutectic Solvents (NADESs) composed of terpenes and organic acids were tested as extraction solvents and characterized by Fourier Transform Infrared Spectroscopy (FTIR), Hydrogen Nuclear Magnetic Resonance Spectroscopy (H-NMR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), density, and viscosity, eliminating the need to use traditional chlorinated solvents. NADES produced with butyric acid and thymol showed the best results and was selected for application for the first time in the extraction of emerging organic contaminants of different classes in water samples.

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Bed regulation within Brazil's National Health System (SUS) plays a crucial role in managing care for patients in need of hospitalization. In Rio Grande do Norte, Brazil, the RegulaRN Leitos Gerais platform was the information system developed to register requests for bed regulation for COVID-19 cases. However, the platform was expanded to cover a range of diseases that require hospitalization.

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Macrophages represent a fundamental component of the innate immune system that play a critical role in detecting and responding to pathogens as well as danger signals. Leishmania spp. infections lead to a notable alteration in macrophage metabolism, whereby infected cells display heightened energy metabolism that is linked to the integrity of host mitochondria.

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Aim: The aim of the current systematic review was to investigate differences in the measurement of working length in primary teeth between electronic apex locators (EAL) and radiographic methods (conventional radiography [CR] and digital radiography [DR]).

Methods: A systematic search was conducted in six electronic databases (Medline via PubMed, Web of Science, Science Direct, Virtual Health Library, Scopus and Cochrane Database of Systematic Reviews). Gray literature and reference lists of included studies were also examined.

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Click beetle larvae from Cretaceous Burmese amber represent an ancient Gondwanan lineage.

Sci Rep

January 2025

Department of Geoinformatics, Faculty of Science, Palacky University, 17. listopadu 50, 77146, Olomouc, Czech Republic.

The click beetles (Elateridae) represent the major and well-known group of the polyphagan superfamily Elateroidea. Despite a relatively rich fossil record of Mesozoic Elateridae, only a few species are described from the Upper Cretaceous Burmese amber. Although Elateridae spend most of their lives as larvae, our knowledge on immature stages of this family is limited, which is especially valid for the fossils.

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Dietary caloric input and tumor growth accelerate senescence and modulate liver and adipose tissue crosstalk.

Commun Biol

January 2025

The MetaboliZSm GrouP, Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.

Metabolic alterations are related to tumorigenesis and other age-related diseases that are accelerated by "Westernized" diets. In fact, hypercaloric nutrition is associated with an increased incidence of cancers and faster aging. Conversely, lifespan-extending strategies, such as caloric restriction, impose beneficial effects on both processes.

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Rotatory devices are essential in clinical surgical practice, however, depending on the different systems available, their function can impact bone repair and postoperative responses on varying scales. This impact underscores the need to explore new techniques aiming to enhance bone repair. This study aimed to assess the immediate and delayed effects on bone healing in subcritical bone defects using both air turbine and an electric handpiece.

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Iptacopan, a first-in-class, oral, selective complement factor B inhibitor, demonstrated efficacy and safety as monotherapy in C5 inhibitor (C5i)-experienced (APPLY-PNH [NCT04558918]) and C5i-naive (APPOINT-PNH [NCT04820530]) patients with paroxysmal nocturnal hemoglobinuria (PNH). In APPLY-PNH and APPOINT-PNH, changes in fatigue (FACIT-Fatigue) and health-related quality of life (HRQOL; EORTC QLQ-C30) from baseline to Day 168 were evaluated. The proportion of patients achieving meaningful within-patient change (MWPC) on the FACIT-Fatigue and 4 EORTC QLQ-C30 subscales (physical functioning, role functioning, fatigue, dyspnea) was evaluated using anchor-based thresholds.

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Nematode-bacteria interactions in bovine parasitic otitis.

Rev Bras Parasitol Vet

January 2025

Laboratório de Helmintologia Romero Lascasas Porto, Departamento de Microbiologia, Imunologia e Parasitologia, Universidade do Estado do Rio de Janeiro - UERJ, Rio de Janeiro, RJ, Brasil.

Bovine parasitic otitis poses challenges in diagnosis, treatment and involves various agents, such as bacteria, fungi, mites, and nematodes. This study focused on the nematodes and bacteria isolated from the auditory canals of dairy cattle. A total of twenty samples were collected from dairy cattle in two states of Brazil.

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