467 results match your criteria: "Federal University of Para (UFPA)[Affiliation]"
Bull Entomol Res
January 2025
Environmental Sciences Graduate Program, Community University of the Chapecó Region (Unochapecó), Chapecó, SC, Brazil.
Mosquitoes, particularly , pose significant public health risks by transmitting diseases like dengue, zika and chikungunya. var. (BTI) is a crucial larvicide targeting mosquitoes while sparing other organisms and the environment.
View Article and Find Full Text PDFSci Rep
December 2024
Laboratory of Fish Microbiology, Institute of Coastal Studies, Federal University of Para (UFPA), Alameda Leandro Ribeiro s/n, Braganca, 68600-000, Para, Brazil.
We evaluate the evidence of cryptic speciation in Larimus breviceps, a species widely distributed in the western South Atlantic, from the Greater Antilles to Santa Catarina in Brazil. Mitochondrial (COI, Cyt b, and Control Region) and nuclear (IGF1 and Tmo-4C4) sequences were obtained from populations in the western South Atlantic. The analysis revealed two genetically distinct, sympatric lineages with no gene flow, with L.
View Article and Find Full Text PDFEnviron Pollut
December 2024
Center of Natural Sciences and Technology., University of Pará State (UEPA), av. Eneas, 2626, Belém, Pará, Brazil.
The intensive use of oil and its derivatives is related to a greater frequency of accidents involving the release of pollutants that cause harmful effects on ecosystems. Actinobacteria are cosmopolitan and saprophytic microorganisms of great commercial interest, but because they are predominantly found in soil, most research into the products of this phylum's metabolism has focused on this habitat. Marine actinobacteria exhibit unique metabolic characteristics in response to extreme conditions in their habitat, which distinguishes them from terrestrial actinobacteria.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Laboratory of Extraction (LABEX), Federal University of Pará, Belém, Pará, Brazil. Electronic address:
Approximately 16,000 thousand tonnes of cocoa husk are produced annually worldwide during the chocolate production chain, representing considerable potential for pectin extraction. The aim of this study was to investigate a new extraction technique using a binary system composed of carbon dioxide and water (CO + HO) at high pressure and temperature, on cocoa sample from floodplain ecosystem. Temperatures of 393.
View Article and Find Full Text PDFHeliyon
November 2024
Laboratory of Human and Medical Genetics, Institute of Biological Sciences, Federal University of Pará (UFPA), Av. Augusto Correa, 01, 66075-110, Brazil.
Brain cancer is considered one of the most aggressive and lethal types of cancer, including primary tumors, being subdivided into milder forms such as low-grade gliomas and glioblastoma, considered the most aggressive form with higher invasion. Among the hallmarks of glioblastoma, the deregulation of mitochondrial metabolism has not yet been fully elucidated. Therefore, the search for mitochondrial biomarkers that can be used as indicators of the progression of this type of cancer is necessary.
View Article and Find Full Text PDFBiochem Pharmacol
January 2025
UCD School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, D04 V1W8, Ireland. Electronic address:
As a multifactorial and heterogeneous disease, cancer has a high mortality rate, and the search for more effective treatments is an enormous challenge. Metal coordination compounds open a range of possibilities that conventional organic and biological molecules can no longer fulfil due to increasing drug resistance. Metallodrugs still have tremendous potential to help overcome drug resistance and find new cures in medicine, considering that at least 25 metallic elements participate in healthy functioning of the human body.
View Article and Find Full Text PDFJCO Precis Oncol
November 2024
Medical Oncology/TSET Phase 1 Program, Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK.
Sci Rep
November 2024
Department of Center for Biological Health Sciences (CCBS), Graduate Program in Parasitic Biology in Amazonia (PPGBPA), State University of Pará (UEPA), Marco, Belém, Pará, 66087-670, Brazil.
Long Covid results from the damage caused by SARS-CoV-2, involving the release of cytokines and the continuous activation of immune cells. This cross-sectional study investigates leukocyte and cytokine profiles in Long Covid patients in the Amazon, a region where such studies are limited. Blood samples were analysed for differential leukocyte counts and cytokine levels.
View Article and Find Full Text PDFParasitology
November 2024
Postgraduate Programme in the Biology of Infectious and Parasitic Agents (BAIP), Federal University of Pará (UFPA), Belém, PA, Brazil.
The Amazon basin has the largest number of fish in the world, and among the most common fishes of the Neotropical region, the threespot () is cited, which in relation to its microparasitic fauna, has described only 1 species of the genus , . The Myxozoa class is considered an obligate parasite, being morphologically characterized by spores formed by valves connected by a suture line. This study describes a new species of sp.
View Article and Find Full Text PDFSci Rep
November 2024
Center of Oncology Research, Federal University of Pará (UFPA), Belém, 66073- 005, PA, Brazil.
Despite all the efforts acquired in four years of the COVID-19 pandemic, the path to a full understanding of the biological mechanisms involved in this disease remains complex. This is partly due to a combination of factors, including the inherent characteristics of the infection, socio-environmental elements, and the variations observed within both the viral and the human genomes. Thus, this study aimed to investigate the correlation between genetic host factors and the severity of COVID-19.
View Article and Find Full Text PDFHeliyon
October 2024
Center for Sciences of Imperatriz, Health and Technology, Federal University of Maranhão - UFMA, 65900-410, Imperatriz, MA, Brazil.
This study reports additional information's of geometric, electronic, thermodynamic, and vibrational properties of a Cu(II) complex with 1,10-phenanthroline and L-glutamine ligands. The experimental spectroscopic analyses were corroborated by density functional theory (DFT). Furthermore, these properties were evaluated using an implicit solvation method with water and methanol solvents, including vacuum condition.
View Article and Find Full Text PDFACS Omega
October 2024
Center for Sciences of Imperatriz, Federal University of Maranhao (UFMA), 65900-410 Imperatriz, MA, Brazil.
Dichloro(l-histidine)copper(II) crystal ([Cu(l-His)Cl] complex) was obtained by the slow evaporation method and characterized concerning its thermal stability, phase transformations, and electronic and vibrational properties. X-ray diffraction (XRPD) confirmed that this complex crystallizes with an orthorhombic structure (222 space group). Thermal analyses (TG and DTA) demonstrate stability from ambient temperature up to 460 K, followed by a phase transition from the orthorhombic structure to the amorphous form around 465 K, as confirmed by temperature-dependent XRPD studies.
View Article and Find Full Text PDFEur J Orthod
December 2024
Post-Graduate program in Dentistry, Faculty of Dentistry, Federal University of Pará (UFPA), Rua Augusto Correa 01, Belém, Pará 66075-110, Brazil.
Background: The clinical protocol and effectiveness of dental expansion with Clear Aligner Therapy (CAT), especially among adults is still unclear. There is a need to map and explore knowledge gaps of dental expansion with CAT among children and adults.
Objective: This scoping review explores the extent and depth of the available literature regarding the effectiveness and predictability of CAT in performing orthodontic expansion in both children and adults.
Acta Parasitol
December 2024
Animal Histology and Embryology Laboratory, Federal Rural University of the Amazon (UFRA), State of Pará, Belém, Brazil.
Purpose: The Myxozoa class is characterized by parasites that have valves joined by a suture line and polar capsules containing eversible spiral filamento and this class is considered an obligate parasite. The genus Ceratomyxa has approximately 300 species described in fish, both marine and freshwater fish, mainly infecting the gallbladder, but also occurring in the urinary bladder. This study describes a new species of Ceratomyxa in the Amazon region for Pimelodella cristata.
View Article and Find Full Text PDFInt J Parasitol Parasites Wildl
December 2024
Laboratory of Cellular Biology and Helminthology "Profa. Dra. Reinalda Marisa Lanfredi", Institute of Biological Sciences, Federal University of Pará (UFPA), Av. Augusto Correa 01, Guamá, Belém, Pará, 66075-110, Brazil.
is an arboreal anuran widely distributed in South America. However, there are no parasitological studies conducted on the species, resulting in a parasite fauna completely unknown. Thus, this study aims to characterize the parasitic community structure of in the municipality of Pedra Branca do Amapari, Amapá state, Amazon region, Brazil.
View Article and Find Full Text PDFPLoS One
October 2024
Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará (UFPA), Belém, Para, Brazil.
This study aimed to investigate the impact of minocycline on the alveolar bone in experimental periodontitis in rats. Thirty Wistar rats were randomly assigned to three groups: control without periodontitis; experimental periodontitis induced by ligature; experimental periodontitis + intraperitoneal administration minocycline for seven days. Ligatures remained in place in both periodontitis groups for 14 days.
View Article and Find Full Text PDFSci Rep
September 2024
Aquatic Ecology Group, Federal University of Pará (UFPA), Belém, PA, Brazil.
The increase in the construction of mega dams in tropical basins is considered a threat to freshwater fish diversity. Although difficult to detect in conventional monitoring programs, rheophilic species and those reliant on shallow habitats comprise a large proportion of fish diversity in tropical basins and are among the most sensitive species to hydropower impacts. We used Baited Remote Underwater Video (BRUV), an innovative, non-invasive sampling technique, to record the impacts caused by Belo Monte, the third largest hydropower project in the world, on fishes inhabiting fast waters in the Xingu River.
View Article and Find Full Text PDFJ Mol Model
September 2024
Center for Social Sciences, Health, and Technology, Federal University of Maranhão-UFMA, Imperatriz, MA, 65900-410, Brazil.
Context: Ammonium Tutton salts have been widely studied in recent years due to their thermostructural properties, which make them promising compounds for application in thermochemical energy storage devices. In this work, a detailed experimental study of the Tutton salt with the formula (NH)Zn(SO)(HO) is carried out. Its structural, vibrational, and thermal properties are analyzed and discussed.
View Article and Find Full Text PDFCancers (Basel)
August 2024
School of Health Sciences, University of the state of Amazonas (UEA), Manaus 69005-010, AM, Brazil.
Foods
September 2024
LAPOA/FEA (Faculty of Food Engineering), Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil.
Foods
August 2024
Biochemistry Department, Chemistry Institute, Federal University of Rio de Janeiro (UFRJ), Avenida Athos da Silveira Ramos 149, Cidade Universitária, Rio de Janeiro 21941-909, RJ, Brazil.
Capsaicin, carotenoids, and phenolic compounds from cumari-do-Pará peppers ( Jacq.) harvested from two different locations in Pará, Brazil, and at different ripening stages were extracted by employing green methodologies as an alternative to organic solvents. Edible vegetable oils from soybeans (), Brazilian nuts ( H.
View Article and Find Full Text PDFFoods
August 2024
Biotechnological Process Laboratory (LABIOTEC), Faculty of Food Engineering (FEA), Institute of Technology (ITEC), Federal University of Pará (UFPA), Rua Augusto Corrêa S/N, Guamá, Belém 66075-900, PA, Brazil.
The aim was to apply a cassava starch/carboxymethyl cellulose blend-based edible coating added to a tocopherol mix to Brazil nuts and evaluate oxidative levels during storage. The edible coatings were prepared from a cassava starch/carboxymethyl cellulose blend and identified as control B (no soy lecithin and no tocopherol mix), L (with soy lecithin and no tocopherol mix), and LT and LT2 (with soy lecithin and tocopherol mix). In the forming solutions of the coatings, stability, viscosity, pH, and color were analyzed.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
January 2025
Center for Social Sciences of Imperatriz, Federal University of Maranhão - UFMA, 65900-410 Imperatriz, MA, Brazil; Institute of Exact and Natural Sciences, Federal University of Para - UFPA, 66075-110 Belém, PA, Brazil. Electronic address:
Azithromycin ethanol solvate monohydrate [CHNO0.5(CHO)HO], abbreviated by AZM-MH-EtOH, was synthesized by slow evaporation method and investigated by powder X-ray diffraction, Raman and infrared (IR) spectroscopy combined with density functional theory (DFT) studies. Electronic and vibrational properties were properly investigated based on a theoretical study of solvation effects, using implicit solvation and solute electron density models.
View Article and Find Full Text PDFPLoS One
August 2024
Postgraduate Program in Collective Health in the Amazon (PPGSCA), Federal University of Pará (UFPA), Belém, Pará, Brazil.
Introduction: Genetic variants may influence Toll-like receptor (TLR) signaling in the immune response to human papillomavirus (HPV) infection and lead to cervical cancer. In this study, we investigated the pattern of TLR expression in the transcriptome of HPV-positive and HPV-negative cervical cancer samples and looked for variants potentially related to TLR gene alterations in exomes from different populations.
Materials And Methods: A cervical tissue sample from 28 women, which was obtained from the Gene Expression Omnibus database, was used to examine TLR gene expression.
Insects
August 2024
Postgraduate Program in Animal Science (PPGCAN), Institute of Veterinary Medicine, Federal University of Para (UFPA), Castanhal 68746-360, PA, Brazil.
Dietary alternatives using insect-based products as an alternative for farm animal nutrition have been the object of study due to the high nutritional value of these feeds and the costs related to both their production and consequently their commercialization. Thus, the use of flies, especially larvae, has a high content of proteins and lipids (fat), as well as minerals and essential nutrients for development and growth, directly impacting the production of these animals, whether meat or milk. Therefore, the objective of this study was to compile data from the literature on the nutritional value of adults and larvae of Black soldier () and housefly () as a dietary alternative for animal feed.
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