550,925 results match your criteria: "Brazil; National Institute of Health Quality Control[Affiliation]"

Gp70 is a cell wall protein required for adhesion, proper interaction with innate immune cells, and virulence.

Cell Surf

June 2025

Departamento de Biología, División de Ciencias Naturales y Exactas, Campus Guanajuato, Universidad de Guanajuato, Noria Alta s/n, col. Noria Alta, C.P. 36050 Guanajuato, Gto, Mexico.

is one of the leading etiological agents of sporotrichosis, a cutaneous and subcutaneous mycosis worldwide distributed. This organism has been recently associated with epidemic outbreaks in Brazil. Despite the medical relevance of this species, little is known about its virulence factors, and most of the information on this subject is extrapolated from .

View Article and Find Full Text PDF

Genomic analysis reveals hidden species diversity in Fabricius (Lepidoptera: Riodinidae).

Insecta mundi

November 2024

Departments of Biophysics and Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, TX, 75390-9050 USA.

Genomic analysis of [Fabricius], 1807 (Lepidoptera: Riodinidae Grote, 1895) reveals species richness higher than anticipated. As a result, one subgenus, 22 species, and one subspecies are proposed as new (type species or type localities in parenthesis): Grishin, ( Prittwitz, 1865), () Grishin, (Peru: Rio Pachitea, Monte Alegre), () Grishin, (Guyana: Cuyuni-Mazaruni), () Grishin, (Brazil: Santa Catarina), () Grishin, (Panama: Darién), () Grishin, (Ecuador: Santo Domingo), () Grishin, (Peru: Cuzco), () Grishin, (Panama: Chiriquí), () Grishin, (Mexico: Tamaulipas), () Grishin, (Mexico: Nuevo León), () Grishin, (Argentina: Salta), () Grishin, (Peru: Piura), () Grishin, (Bolivia: La Paz), () Grishin, (Mexico: Sonora), () Grishin, (Peru: Madre de Dios), () Grishin, (Bolivia: La Paz), () Grishin, (Mexico: Chiapas), () Grishin, (Panama: Darién), () Grishin, (Panama: Darién), () Grishin, (Panama: Darién), () Grishin, (Panama: Panamá), () Grishin, (Peru: Cuzco), () Grishin, (Brazil: São Paulo), and () Grishin, (Brazil: Paraná). The following five taxa are (not subspecies): () Schaus, 1928, (not () (Linnaeus, 1767)), () Stichel, 1910, (not () Westwood, 1851), () Stichel, 1929, (not () Godman and Salvin, 1886), () R.

View Article and Find Full Text PDF

Objectives: To investigate the prevalence of nine respiratory viruses and their clinical characteristics in children aged up to 5 years old in the state of Sergipe, Northeast of Brazil in the pre-COVID-19 pandemic period.

Methods: Children with suspected influenza virus infection were included in the study. Clinical samples were screened using real-time quantitative polymerase chain reaction for the diagnosis of adenovirus, parainfluenza (PIV)1, PIV2, PIV3, and human metapneumovirus.

View Article and Find Full Text PDF

Carbon Doping in Small Lithium Clusters: Structural, Energetic, and Electronic Properties from Quantum Monte Carlo Calculations.

ACS Omega

January 2025

Instituto de Física, Universidade Federal de Goiás, Goiânia, Goiás 74001-970, Brazil.

We investigate the energetic and structural properties of small lithium clusters doped with a carbon atom using a combination of computational methods, including density functional theory (DFT), diffusion quantum Monte Carlo (DMC), and the Hartree-Fock (HF) approximation. We calculate the lowest energy structures, total ground-state energies, electron populations, binding energies, and dissociation energies as a function of cluster size. Our results show that carbon doping significantly enhances the stability of lithium clusters, increasing the magnitude of the binding energy by 0.

View Article and Find Full Text PDF

Transient Expression of Zika NS2B Protein Antigen in and Use for Arboviruses Diagnosis.

ACS Omega

January 2025

Laboratory of Biotechnology and Molecular Biology, Health Sciences Center, State University of Ceara, Fortaleza 60714-903, Brazil.

Zika (ZIKV) and Dengue (DENV) viruses are clinically significant due to their severe neurological and hemorrhagic complications. Rapid diagnostics often rely on nonstructural proteins to generate specific antibodies. This study aimed to produce IgG antibodies from the recombinant ZIKV protein and plant-expressed NS2B protein for arbovirus detection in serum and urine samples.

View Article and Find Full Text PDF

Monodisperse and colloidally stable magnetic iron oxide nanoparticles have been developed for diverse biotechnology applications. Although promising for the adsorption of organic molecules, the low density of adsorption sites in these nanoparticles has been a significant challenge. In this study, an optimized factorial design with response surface methodology (RSM) was employed to produce small Superparamagnetic Iron Oxide Nanoparticles (SPIONs) stabilized with tetraethoxysilane (TEOS).

View Article and Find Full Text PDF

Can Spp. Contribute to the Bioremediation and Biostimulation of Plants in Soil Contaminated with Herbicides?

ACS Omega

January 2025

Laboratory of Biological Control of Plant Disease and Laboratory of Plant Biotechnology, Institute of Biotechnology, University of Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Petrópolis, Caxias do Sul, Rio Grande do Sul 95070-560, Brazil.

This work aimed to evaluate the potential of spp. in the bioremediation of herbicides and biostimulation of plants in herbicide-contaminated soils. In the first phase, the experiment followed a completely randomized design in a 4 × 3 × 4 factorial scheme with five replications, four strains of spp.

View Article and Find Full Text PDF

Circadian Analysis in Volatile Organic Compounds from Kunth Fruits and Their Potential Role in Attracting Bats.

ACS Omega

January 2025

Departamento de Química, Universidade Federal do Paraná, Av. Cel. Francisco H. dos Santos, 100, Jardim das Américas, CP 19081, 81531-980 Curitiba, Paraná, Brazil.

Piper fruits are one of the main dietary sources of , a fruit-eating bat largely responsible for dispersing their seeds. To investigate the mechanism of this plant-animal interaction, ripe and unripe fruits of were collected in the morning, afternoon, and night. The volatile organic compounds (VOC) were obtained through dynamic headspace (HS) and hydrodistillation (HD) and were analyzed by gas chromatography with flame ionization detector and GC-MS, resulting in the identification of ninety-five compounds.

View Article and Find Full Text PDF

Unlabelled: Bone tissue substitutes are increasing in importance. Hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) act as a cell matrix and improve its mechanical properties. One of their raw materials is marine-origin by-products.

View Article and Find Full Text PDF

This article evaluates the prospects for rainwater harvesting (RWH) as a means of optimizing water management in the Mandara Mountains. RWH is a small-scale water conservation approach for locally intercepting and storing rainfall before it enters the usual hydrologic cycle. This ancient practice has recently sustained lives in semiarid areas of the world (e.

View Article and Find Full Text PDF

Innovation in the drying process during the roasting of cashew nut almonds has the potential to significantly improve product quality. This study aimed to investigate the drying kinetics of the almond, comparing the experimental data with the mathematical models of Fick, Page, Cavalcanti Mata, and Henderson and Pabis. The research was conducted at the Laboratory of Physical Measurements and Drying of the Academic Unit of Food Engineering at the Federal University of Campina Grande.

View Article and Find Full Text PDF

Introduction: To identify the most effective treatment for juvenile dermatomyositis (JDM), considering efficacy, safety, impact on patients and improvement in their quality of life.

Material And Methods: A systematic review was carried out comparing known treatments and immunobiological therapies, evaluating clinical improvement, adverse events and prognosis. The MEDLINE, PubMed, LILACS and Cochrane Library databases were used with children aged 0 to 18 diagnosed with JDM.

View Article and Find Full Text PDF

Giant prostatic calculus in patient treated with perineal prostatotomy: case report.

AME Case Rep

November 2024

Department of Urology, São José do Rio Preto Regional Faculty of Medicine Foundation (FUNFARME), São José do Rio Preto, SP, Brazil.

Background: Urolithiasis (kidney stone) is a common condition that often leads patients to urgent or emergency care services. Urinary calculi are generally found in the kidneys, ureters, or bladder. Urethral calculi are uncommon and can result from the migration of a calculus in the upper urinary tract or vesicle or may be primary of the urethra.

View Article and Find Full Text PDF

Exergames, which blend physical activity with digital gaming, are increasingly recognized for their potential to boost user engagement in exercise. The user perception of these games plays a critical role in sustaining this engagement. Therefore, understanding and effectively assessing user experience (UX) in exergames is crucial to maximizing their appeal and effectiveness.

View Article and Find Full Text PDF

Colorectal cancer is one of the most prevalent malignant neoplasms in Brazil. Hepatectomy for resection of liver metastases plays an essential role in increasing disease-free survival, with the possibility of cure. The feasibility of liver resection depends on factors related to the remaining liver after surgery.

View Article and Find Full Text PDF

Meningioma in the fourth ventricle in 2 cats.

J Vet Diagn Invest

January 2025

Department of Veterinary Pathology, College of Veterinary Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.

Feline meningiomas typically arise on the surface of the brain but can occur in the third ventricle. Meningiomas in the fourth ventricle have not been reported in cats, to our knowledge. Here, we describe the clinical and pathologic findings of meningioma in the fourth ventricle in 2 cats.

View Article and Find Full Text PDF

Ossifying fibroma (OF) is a slow-growing, expansive, and benign fibro-osseous neoplasm that is rare in cattle. It mainly affects the craniofacial bones, especially the mandible. Here, we report 2 cases of mandibular OF in Nelore and mixed-breed steers with enlarged masses in the rostral portion of the mandible.

View Article and Find Full Text PDF

Quercetin Reduces the Susceptibility to Cardiac Reperfusion Arrhythmias in Ovariectomized Rats.

Mol Nutr Food Res

January 2025

Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.

Cardiovascular diseases (CVDs) are the leading cause of death globally. Decrease in female sex hormones during menopause increases the risk of cardiovascular disease, mainly ischemic heart disease (IHD). Quercetin, a flavonoid, has beneficial properties in CVDs due to its antioxidant, anti-inflammatory, and anti-apoptotic effects.

View Article and Find Full Text PDF

Straightforward Formation of Borirenes from Boroles and Dialkynes.

Angew Chem Int Ed Engl

January 2025

Julius-Maximilians-Universität Würzburg: Julius-Maximilians-Universitat Wurzburg, Institute for Inorganic Chemistry, GERMANY.

We report a selective one-step synthesis of perarylated borirenes by reaction of antiaromatic boroles with 1,4-diarylbuta-1,3-diynes. Mechanistic studies, both experimental and computational, reveal key intermediates, including boranorbornadiene and 7-borabicyclo[4.1.

View Article and Find Full Text PDF

Quantum Chemical NMR Spectroscopic Structural Analysis in Solution: The Investigation of 3-Indoleacetic Acid Dimer Formation in Chloroform and DMSO Solution.

Magn Reson Chem

January 2025

Laboratório de Química Computacional e Modelagem Molecular (LQC-MM), Departamento de Química Inorgânica, Instituto de Química, Universidade Federal Fluminense (UFF), Niterói, Rio de Janeiro, Brazil.

We present a DFT-PCM NMR study of 3-indoleacetic acid (3-IAA), used as a working example, including explicit solvent molecules, named PCM-nCHCl, PCM-nDMSO (n = 0, 2, 4, 8, 14, 20, and 25), to investigate the dimer formation in solution. Apart from well-known cyclic (I) and open (II) acetic acid (AA) dimers, two new structures were located on DFT-PCM potential energy surface (PES) for 3-IAA named quasicyclic A (III) and quasicyclic B (IV), the last one having N-H…O hydrogen bond (instead of O-H…O). In addition, four other structures having π-π type interactions named V, VI, VII, and VIII were also obtained completing the sample on the PES.

View Article and Find Full Text PDF