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Jean-Paul Madeira, Béatrice Alpha-Bazin, Jean Armengaud, Catherine Duport
Aerobic respiratory growth generates endogenous reactive oxygen species (ROS). ROS oxidize protein-bound methionine residues into methionine sulfoxide. Methionine sulfoxide reductases catalyze the reduction of methionine sulfoxide to methionine in proteins. Here, we use high-throughput nanoLC-MS/MS methodology to establish detailed maps of oxidized proteins from Bacillus cereus ATCC 14579 ΔpBClin15 and its mutant for which the methionine sulfoxide reductase AB gene ( msrAB ) has been inactivated (Madeira et al...
June 2018: Data in Brief
Florian Braun, Nicole Bertoletti, Gabriele Möller, Jerzy Adamski, Martin Frotscher, Nathalie Guragossian, Patrícia Alexandra Madeira Gírio, Marc Le Borgne, Laurent Ettouati, Pierre Falson, Sebastian Müller, Günther Vollmer, Andreas Heine, Gerhard Klebe, Sandrine Marchais-Oberwinkler
The human enzyme 17β-hydroxysteroid dehydrogenase 14 (17β-HSD14) oxidizes the hydroxyl group at position 17 of estradiol and 5-androstenediol using NAD+ as cofactor. However, the physiological role of the enzyme remains unclear. We recently described the first class of nonsteroidal inhibitors for this enzyme with compound 1 showing a high 17β-HSD14 inhibitory activity. Its crystal structure was used as starting point for a structure-based optimization in this study. The goal was to develop a promising chemical probe to further investigate the enzyme...
May 22, 2018: European Journal of Medicinal Chemistry
Vitor M C Madeira
Bioenergetic science started in the eighteenth century with the pioneer works by Joseph Priestley and Antoine de Lavoisier on photosynthesis and respiration, respectively. New developments were implemented by Pasteur in the 1860s with the description of fermentations associated with microorganisms, further documented by Buchner brothers who discovered that fermentations also occurred in cell extracts in the absence of living cells. In the beginning of the twentieth century, Harden and Young demonstrated that orthophosphate and other heat-resistant compounds (cozymase), later identified as NAD, ADP, and metal ions, were mandatory in the fermentation of glucose...
2018: Methods in Molecular Biology
Ana Paula Madeira Di Beneditto, Roberto Weider de Assis Franco
The Mn2+ concentrations in the sagittae otoliths of 12 fish families (and 19 species) that co-occur in a coastal area of southeastern Brazil (~21°S) were quantified using electron paramagnetic resonance (EPR). Inferences were made about the relationship between fish habitat and trace element incorporation. Inferences were made on the relationship between trace element concentration and otolith shape. The differences in Mn2+ concentrations among the species suggest that habitat (and feeding habits) might drive the incorporation of this trace element into fish otoliths, with higher values in bottom-associated fish species than in surface-associated species...
May 30, 2018: Journal of Biological Physics
Afonso Félix-Oliveira, Nélson Vale, Sérgio Madeira, Miguel Mendes
5-Flurouracil is a first-line agent in several cancer-therapy regimens. Cardiotoxicity is common, with coronary artery disease being an important risk factor. We report the case of an acute coronary syndrome presumably induced by 5-FU, in a patient with previously unknown and asymptomatic coronary artery disease, with and estimated intermediate risk for cardiovascular events. Pre-chemotherapy risk evaluation and optimal patient care are still not standardized in this clinical scenario.
May 23, 2018: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
José Maria Soares, José M Gomes, Marcelo R Anjos, Josianne N Silveira, Flavia B Custódio, M Beatriz A Gloria
The objective of this study was to quantify total mercury in highly popular Amazonian fish pacu, curimatã, jaraqui, and sardinha from the Madeira River and to estimate the exposure to methylmercury from fish consumption. The samples were obtained from two locations - Puruzinho Igarapé and Santa Rosa - near Humaitá, Amazonia, Brazil in two seasons of 2015 (high and low waters). The fish were identified, weighed and measured, and lipids were quantified. Total mercury was determined by gold amalgamation-atomic absorption spectrometry...
July 2018: Food Research International
Dulce Brito, Nuno Cardim, Luís Rocha Lopes, Adriana Belo, Jorge Mimoso, Lino Gonçalves, Hugo Madeira
INTRODUCTION: In adults, unexplained left ventricular hypertrophy is usually due to sarcomeric hypertrophic cardiomyopathy (HCM). Fabry disease (FD) is rare but may mimic sarcomeric HCM, and has an adverse prognosis in the absence of specific treatment. We aimed to assess cardiologists' awareness of FD based on data from the Portuguese Registry of Hypertrophic Cardiomyopathy. METHODS: A total of 811 index patients, aged 55 ± 16 years, 486 (59.9%) male, were included...
May 22, 2018: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
Eliziário Vitoriano de Araújo Neto, Alinne Patierry Oliveira Pacífico Feitosa, Giovanni Iury Martins Pontes, Luiz Carlos Costa Madeira Alves
No abstract text is available yet for this article.
May 22, 2018: Photodiagnosis and Photodynamic Therapy
Vítor Spínola, Paula C Castilho
The qualitative and quantitative characterization of Madeira moneywort (Sibthorpia peregrina L.) compounds was investigated for the first time. The antioxidant activity and the effect of the methanolic extract on digestive enzymes activity linked to type-2 diabetes and obesity were also determined by in vitro assays. A total of 56 components were characterized in S. peregrina. Phenylethanoids glycosides (PhEGs) represented the main classes of compounds (95.23 mg g-1 of dry extract), almost all verbascoside and its derivatives (up to 98...
May 25, 2018: Natural Product Research
Cristina Maria Alves Marques-Vieira, Luís Manuel Mota de Sousa, Lisete Maria Ribeiro de Sousa, Sílvia Maria Alves Caldeira Berenguer
OBJECTIVE: to translate and adapt Falls Efficacy Scale - International (FES-I). To analyze the psychometric properties of the FES-I Portugal version. METHOD: psychometric study. Sample consisting of 170 elderly people residing in the Autonomous Region of Madeira. A two- part form was used (sociodemographic characterization and FES-I Portugal). The cross-cultural adaptation was performed and the following psychometric properties were evaluated: validity (construct, predictive, and discriminant), reliability (Cronbach's alpha), and inter-rater reliability...
2018: Revista Brasileira de Enfermagem
Violeta Alarcão, Teresa Madeira, Catarina Peixoto-Plácido, Nuno Sousa-Santos, Elisabete Fernandes, Paulo Nicola, Osvaldo Santos, João Gorjão-Clara
OBJECTIVES: Self-perceived health declines with age, varies by gender and is a predictor of mortality, morbidity, physical and psychological functioning. However, gender differences in health and illness perception are complex and not yet fully understood. This study aimed to explore gender-related differences in psychosocial determinants of self-perceived health among older adults living in nursing homes. METHOD: Nationwide face-to-face survey of the Portuguese population aged 65 and over...
May 23, 2018: Aging & Mental Health
Flávia Castro, Ana Patrícia Cardoso, Raquel Madeira Gonçalves, Karine Serre, Maria José Oliveira
Interferon-gamma (IFN-γ) is a pleiotropic molecule with associated antiproliferative, pro-apoptotic and antitumor mechanisms. This effector cytokine, often considered as a major effector of immunity, has been used in the treatment of several diseases, despite its adverse effects. Although broad evidence implicating IFN-γ in tumor immune surveillance, IFN-γ-based therapies undergoing clinical trials have been of limited success. In fact, recent reports suggested that it may also play a protumorigenic role, namely, through IFN-γ signaling insensitivity, downregulation of major histocompatibility complexes, and upregulation of indoleamine 2,3-dioxygenase and of checkpoint inhibitors, as programmed cell-death ligand 1...
2018: Frontiers in Immunology
M O Rodrigues, N Abrantes, F J M Gonçalves, H Nogueira, J C Marques, A M M Gonçalves
Microplastics (particles with a size<5mm), one of the most emerging aquatic pollutants, are of particular concern since they can reach high densities and interact with biotic and abiotic environment. The occurrence of microplastics in freshwater systems is less understood than in marine environment. Hence, the present study aims to provide new insights into microplastics abundances and distribution in Antuã River (Portugal) by applying the isolation method of wet peroxide oxidation with addition of zinc chloride to water and sediment samples collected in March and October 2016, in three sampling sites...
August 15, 2018: Science of the Total Environment
Joana Ângelo, Pedro Magalhães, Luísa Andrade, Luís M Madeira, Adélio Mendes
Photocatalysis was recognised as a suitable process for the photoabatement of atmospheric pollutants. The photooxidation mechanism on TiO2 has been widely studied. However, recent studies demonstrated that the very often-assumed photooxidation intermediated by the hydroxyl radical cannot explain all the experimental observations. Indeed, this study contributes for a new understanding of NO photooxidation. First, the adsorption equilibrium isotherms of NO, NO2 and H2 O on the photocatalyst, Aeroxide® P25 from Evonik Industries, were obtained...
May 11, 2018: Environmental Pollution
Joao Castelhano, Isabel C Duarte, Carlos Ferreira, Joao Duraes, Henrique Madeira, Miguel Castelo-Branco
Software programming is a complex and relatively recent human activity, involving the integration of mathematical, recursive thinking and language processing. The neural correlates of this recent human activity are still poorly understood. Error monitoring during this type of task, requiring the integration of language, logical symbol manipulation and other mathematical skills, is particularly challenging. We therefore aimed to investigate the neural correlates of decision-making during source code understanding and mental manipulation in professional participants with high expertise...
May 9, 2018: Brain Imaging and Behavior
João Vitor de Queiroz, José Cavalcante Souza Vieira, Grasieli de Oliveira, Camila Pereira Braga, Izabela da Cunha Bataglioli, Janaína Macedo da Silva, Wellington Luiz de Paula Araújo, Pedro de Magalhães Padilha
Predator fish can accumulate high levels of mercury, which qualifies them as potential indicators of this toxic metal. The predatory species Brachyplatystoma filamentosum, popularly known as filhote, is among the most consumed species in the Brazilian Amazon. Continuing the metalloproteomic studies of mercury in Amazonian fishes that have been developed in the last 5 years, the present paper provides the data of protein characterization associated with mercury in muscle and liver samples of filhote (Brachyplatystoma filamentosum) collected in the Madeira River, Brazilian Amazon...
May 8, 2018: Biological Trace Element Research
Anelise F Orílio, Rosana Blawid, Gabriela A Costa, Suzane S V S F Gomes, Tatsuya Nagata, Nuno R Madeira, Alice K Inoue-Nagata, Renato O Resende
High-throughput sequencing analysis detected a clostero-like virus from arracacha plants (Arracacia xanthorrhiza) in Brazil. The complete genome sequence, confirmed by RACE and Sanger sequencing, consists of 15,763 nucleotides with nine predicted open reading frames (ORFs) in a typical closterovirus genome organisation. The putative RNA-dependent RNA polymerase (RdRp), heat shock protein 70 homologue (Hsp70h), and coat protein showed 55-65, 38-44, and 20-36% amino acid sequence identity, respectively, to the homologous proteins of known closteroviruses...
May 7, 2018: Archives of Virology
Ana Figueiredo, Lucia Oliveira, Luís Madeira de Carvalho, Carlos Fonseca, Rita Tinoco Torres
The stone marten (Martes foina) is one of the most common species of marten in Europe. Due to increased urbanization and forest degradation, it is now often found in urban habitats, which increased the possibility of parasites transmission between wildlife-domestic animals and humans. Our preliminary study of this mustelid in Portugal, aimed to assess prevalence of helminths. Six helminth parasites were found (Crenosoma vulpis, Angiostrongylus sp., Toxocara sp., Toxascaris leonina, Ancylostomatidae and Strongyloides sp...
2018: Annals of Parasitology
Filipa Madeira, Joana Cortesão, Rita Pancas, Teresa Paiva
INTRODUCTION: Although uncommon, major vessel hemorrhage is the most feared complication of mediastinoscopy. Our goal was to determine the optimal management strategy and to develop a simple and accessible protocol for optimizing care in these situations. METHODS: Data collection after reviewing the relevant literature. A literature review was conducted using the following databases: PubMed, Medline, Embase and ScienceDirect. RESULTS: The protocol consists of three distinct parts - initial checklist, considerations in minor bleeding and performance in major bleeding...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
Márcio Madeira, Sara Ranchordás, Paulo Oliveira, Tiago Nolasco, Marta Marques, Luis Bruges, José Calquinha, Miguel Sousa Uva, Miguel Abecasis, José Pedro Neves
INTRODUCTION: Left heart disease is the most common cause of pulmonary hypertension (PH), and when present is associated with higher surgical risk. OBJECTIVES: Analyze the effect of PH severity on morbidity, early and late mortality in patients with pulmonary artery systolic pressure (PASP) over 30mmHg that underwent valvular heart surgery. METHODS: Retrospective observational study including all patients with PH, defined as PASP>30 mmHg that underwent isolated valvular heart surgery, between 2007 and 2016...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
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