619 results match your criteria: "University of Maranhão (UFMA)[Affiliation]"
Trop Anim Health Prod
January 2025
Science Center of Chapadinha, Federal University of Maranhão, Chapadinha, Maranhao, Brazil.
This study investigated the modulation of Eimeria spp. parasite load and its impact on productivity parameters in lambs fed varying levels of babassu by-product (BBP). Twenty-four Dorper × Santa Inês lambs naturally infected with Eimeria spp.
View Article and Find Full Text PDFViruses
December 2024
University Hospital of UFMA, Federal University of Maranhao, São Luís 65080-805, Maranhão, Brazil.
Chordomas are a low-to-intermediate-grade slow-growing subtype of sarcoma, but show propensity to grow and invade locally with recurrence and metastasis in 10-40% of cases. We describe the first case of spontaneous regression of a solid tumor (histologically and immunohistochemically proven chordoma) after COVID-19. A female patient with clival chordoma underwent occipitocervical fixation prior to tumor resection.
View Article and Find Full Text PDFJ Clin Periodontol
January 2025
Postgraduate Program in Dentistry, Federal University of Maranhão, São Luis, Maranhão, Brazil.
Aim: To investigate the association between molar incisor hypomineralization (MIH) and periodontitis in adolescents.
Methods: A population-based study was undertaken of Brazilian adolescents aged 18 and 19 years (n = 2515). MIH was assessed according to Ghanim's criteria.
Vet World
November 2024
Center for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, Portugal.
Background And Aim: Papillomaviruses (PVs) infections have been documented in numerous animal species across different regions worldwide. They often exert significant impacts on animal health and livestock production. Scientists have studied natural products for over half a century due to their diverse chemical composition, acknowledging their value in fighting cancer.
View Article and Find Full Text PDFEnviron Pollut
January 2025
Federal Institute of Maranhão, Campus Barreirinhas, Rodovia MA-225, KM 04, CEP:65590-000, Barreirinhas, Maranhão, Brazil. Electronic address:
Dredging in estuarine systems significantly impacts phytoplankton communities, with suspended particulate matter (SPM) and dissolved aluminum (Al) serving as indicators of disturbance intensity. This study assessed the effects of dredging in the São Marcos Estuarine Complex (SMEC), Brazil, over three distinct events (2015, 2017, 2020), involving varying sediment volumes and climatic influences. Prolonged dredging operations and increased sediment volumes led to a pronounced 43.
View Article and Find Full Text PDFPharmaceutics
December 2024
PostGraduate Program in Chemistry, Center for Exact Sciences and Technology (CCET), UFMA-Federal University of Maranhão, São Luís 65080-805, Brazil.
Leishmaniasis, caused by protozoa of the genus , is a major global health issue due to the limitations of current treatments, which include low efficacy, high costs, and severe side effects. This study aimed to develop a more effective and less toxic therapy by utilizing zein nanoparticles (ZNPs) in combination with a nonpolar fraction (DCMF) from (Syn. ), a plant rich in dimeric flavonoids called brachydins.
View Article and Find Full Text PDFMaterials (Basel)
December 2024
Department of Dentistry, Federal University of Maranhão (UFMA), São Luís 65080-805, MA, Brazil.
This in vitro study evaluated the effects of brushing with activated charcoal powder or toothpaste on enamel surface properties, including color change (ΔE), Knoop microhardness (HK), roughness (Ra), and the characteristics of the resulting brushing slurry [pH, fluoride (F), and calcium (Ca) concentration]. A total of 48 enamel samples were stained and divided into 4 groups ( = 12): activated charcoal toothpaste (AC-T), activated charcoal powder (AC-P), hydrogen peroxide-based whitening toothpaste (HP-T), and conventional toothpaste (C-T, positive control). The samples were subjected to a brushing cycling model, and ΔE, HK, Ra and enamel morphology were analyzed at baseline (T0) and after brushing cycle (T1).
View Article and Find Full Text PDFInt J Pharm
February 2025
Center for Science of Imperatriz, Federal University of Maranhão - UFMA, 65900-410, Imperatriz, MA, Brazil. Electronic address:
This study reports the synthesis and the experimental-theoretical characterization of a new coamorphous system consisting of ethionamide (ETH) and mandelic acid (MND) as a coformer. The solid dispersion was synthesized using the slow solvent evaporation method in an ethanolic medium. The structural, vibrational, and thermal properties of the system were characterized.
View Article and Find Full Text PDFMikrochim Acta
December 2024
Chemistry Institute, Federal University of Uberlândia, Uberlândia, MG, 38408-100, Brazil.
Babassu (Atallea sp.), a native palm tree from South America's Amazon produces bio-oil and biochar with significant potential for industrial applications. Babassu oil as a bio-based plasticizer is reported here for the first time to replace petrochemical alternatives in the production of conductive filaments for additive manufacturing purposes.
View Article and Find Full Text PDFEur J Obstet Gynecol Reprod Biol
February 2025
Federal University of Maranhão, Avenida dos Portugueses, 1966, Vila Bacanga, ZIP Code: 65080-805, São Luís, Maranhão, Brazil.
Purpose: This study aimed to present the prevalence of depression and anxiety in women with Chronic Pelvic Pain (CPP) and their associated factors.
Methods: This systematic review and meta-analysis were conducted using the PubMed, Embase, and SciELO platforms, focusing on studies published between 2010 and 2024.
Results: Eight studies were evaluated and demonstrated a significant prevalence of anxiety and depression in women with CPP, ranging from 22.
Environ Sci Pollut Res Int
January 2025
Laboratório de Química Analítica E Ecotoxicologia (LAEC), Federal University of Maranhão (UFMA), Av. Dos Portugueses, 1966, São Luís, Maranhão, 65080-805, Brazil.
Pesticide contamination remains a significant environmental concern globally, with important implications for aquatic ecosystems. Despite being one of the world's largest pesticide consumers, monitoring and assessment of pesticide pollution are limited in Brazil, especially in sensitive regions like the Amazon. In this study, the occurrence and environmental risks of 8 pesticides of different classes, namely alachlor, atrazine, chlorfenvinphos, isoproturon, irgarol, simazine, diuron, and its transformation product DCPMU (1-(3,4-dichlorophenyl)-3-methyl urea) were analysed in surface water of the São Marcos Estuarine Complex (SMEC) in two consecutive years.
View Article and Find Full Text PDFCytokine
January 2025
Program in Health Sciences, Federal University of Maranhão, Brazil; Program in Health and Environment, Federal University of Maranhão, Brazil; Department of Biology, Federal University of Maranhão, Brazil. Electronic address:
Visceral Leishmaniasis (VL) is an endemic disease in Latin America, and the clinical outcome worsens when a patient has HIV co-infection. In these patients, the immune response is complex and cytokines profile variable. We evaluate Th1/Th2/Th17 cytokine profile in VL/HIV patients from Brazilian high endemic area.
View Article and Find Full Text PDFBiomedicines
November 2024
Service of Hepatology, University Hospital of the Federal University of Maranhão (HUUFMA/EBSERH), São Luis 65020-070, Brazil.
Background/objectives: Approximately 25% of the world's population and more than 60% of patients with type 2 diabetes (T2D) have metabolic-dysfunction-associated steatotic liver disease (MASLD). The association between these pathologies is an important cause of morbidity and mortality in Brazil and worldwide due to the high frequency of advanced fibrosis and cirrhosis. The objective of this study was to determine the epidemiologic and clinical-laboratory profile of patients with T2D and MASLD treated at an endocrinology reference service in a state in northeastern Brazil, and to investigate the association of liver fibrosis with anthropometric and laboratory measurements.
View Article and Find Full Text PDFParasitol Res
November 2024
Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil.
The life-cycle of Amblyomma calcaratum was evaluated experimentally under laboratory conditions using birds (Serinus canaria, Gallus gallus) and rodents (Calomys callosus) as hosts for immatures and a rabbit (Oryctolagus cuniculus) as host for adults. Developmental periods of the non-parasitic stages were observed in an incubator at 27 °C and 90% RH. The passerine S.
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 PDFJ Infect
December 2024
Radboudumc-CWZ Center of Expertise for Mycology, Nijmegen, the Netherlands; Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, the Netherlands; Institute of Translational Research, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Excellence Center for Medical Mycology, University of Cologne, Cologne, Germany. Electronic address:
Objective: To describe an outbreak due to Candida vulturna, a newly emerging Candida species belonging to the Candida haemulonii species complex in the Metschnikowiaceae family.
Methods: In this retrospective cohort study we genotyped 14 C. vulturna bloodstream isolates, occurring in a 4-month-period in paediatric cancer patients in a Brazilian hospital.
Heliyon
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 PDFPathol Res Pract
December 2024
Post-Graduate Program in Adult Health (PPGSAD), Federal University of Maranhão (UFMA), Av. dos Portugueses, 1966, São Luís, Maranhão 65080-805, Brazil. Electronic address:
Deletions of the GSTT1 and GSTM1 are associated with chemical carcinogenesis and genitourinary malignancies like bladder cancer, where they correlate with increased tumor aggressiveness. In uterine cervical lesions, GSTT1 and GSTM1 deletions have also been suggested to facilitate the persistence of human papillomavirus (HPV) infection and HPV-induced carcinogenesis. This work addresses the hypothesis that GSTT1/GSTM1 deletions are associated with presence of HPV DNA and aggressiveness in penile cancer, a rare malignancy with HPV+ and HPV- subtypes.
View Article and Find Full Text PDFiScience
October 2024
LIPCAT (Laboratório de Intensificação de Processos e Catálise), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-594, RJ, Brazil.
The transition toward a sustainable energy framework requires developing innovative methods for fuel generation that utilize renewable resources and decrease carbon footprints. Thus, the review overviews current advancements in solid oxide electrolysis cell (SOEC) technology, specifically focusing on its application in co-electrolysis processes to produce syngas with different H:CO ratios, essential for Fischer-Tropsch synthesis. It emphasizes the potential of integrating partial methane oxidation reaction into the electrolysis process.
View Article and Find Full Text PDFIn response to the COVID-19 pandemic, scientific authorities were routinely consulted by mainstream media outlets through interviews, statements and/or supporting images. In this framework, our goal in this study was to analyze the media representation of scientists in Brazil during the first year of this global public health crisis. To this end, we applied a research protocol and, using statistical techniques, quantitatively analyzed newscasts on the country's main TV news program, Jornal Nacional.
View Article and Find Full Text PDFPharmaceutics
October 2024
Laboratory of Chemistry of Natural Products, Department of Chemistry, Federal University of Maranhão (UFMA), São Luís 65080-805, Brazil.
Background/objectives: Arboviruses, transmitted by mosquitoes like , pose significant public health challenges globally, particularly in tropical regions. The rapid spread and adaptation of viruses such as Dengue, Zika, and Chikungunya have emphasized the need for innovative control methods. Essential oils from plants, such as (Gardner) Sch.
View Article and Find Full Text PDFInt J Mol Sci
October 2024
Service of Endocrinology, University Hospital of the Federal University of Maranhão (HUUFMA/EBSERH), São Luís 65020-070, Brazil.
Front Endocrinol (Lausanne)
October 2024
Post-Graduate Program in Adult Health (PPGSAD), Federal University of Maranhão (UFMA), São Luis, Brazil.
Introduction: Pituitary adenomas (PAs) are benign tumors with high prevalence and, occasionally, aggressive course. The tumorigenesis of these lesions is not completely understood at the molecular level. BAK1 and BAX proteins play fundamental roles in apoptosis and seem to interact with VDAC proteins, whose expressions have been markedly altered in cancer, impacting their prognosis.
View Article and Find Full Text PDFMolecules
September 2024
Center of the Valorization of Amazonian Bioactive Compounds-CVACBA, Federal University of Pará, Belém 66075-750, PA, Brazil.
The biodiversity of Brazil provides an excellent climate and favorable pollination conditions for L., especially in the Eastern Amazon region, which boasts vast floral wealth, including an abundance of açaí () flowers and fruits. In the present study, seven types of honey were evaluated: three containing floral nectar from açaí (Açaí honey) collected in the Eastern Amazon region (Açaí honey from Breu Branco (AH1 and AH2) and Açaí honey from Santa Maria (AH3), both from the state of Pará, Brazil) and four honeys from different regions of Brazil (Aroeira honey from Minas Gerais, Cipó-Uva honey from Distrito Federal, Mangue honey from Pará, and Timbó honey from Rio Grande do Sul).
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