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Paulo Almeida

Miguel Jesus Nunes Ramos, João Lucas Coito, Joana Fino, Jorge Cunha, Helena Silva, Patrícia Gomes de Almeida, Maria Manuela Ribeiro Costa, Sara Amâncio, Octávio S Paulo, Margarida Rocheta
RNA-seq of Vitis during early stages of bud development, in male, female and hermaphrodite flowers, identified new loci outside of annotated gene models, suggesting their involvement in sex establishment. The molecular mechanisms responsible for flower sex specification remain unclear for most plant species. In the case of V. vinifera ssp. vinifera, it is not fully understood what determines hermaphroditism in the domesticated subspecies and male or female flowers in wild dioecious relatives (Vitis vinifera ssp...
October 24, 2016: Plant Molecular Biology
Francisco Augusto Porto-Ferreira, Cesar de Almeida-Neto, Edward L Murphy, Sandra de Camargo Montebello, Fátima Aparecida Hangai Nogueira, Edina Mariko Koga da Silva, William MacFarland, Brian Custer
BACKGROUND: Low return rates for notification and counseling among donors with reactive serologic screening tests have been reported worldwide. A randomized trial to test the effectiveness of text message, letter, or telephone call reminders to improve return among nonresponding first-time blood donors with reactive serologic tests was conducted. STUDY DESIGN AND METHODS: Donors with serologically reactive screening test results who had a cell phone and resided in the metropolitan telephone area code of São Paulo in the period from August 2013 through July 2014 were eligible...
October 23, 2016: Transfusion
Pedro H T Q de Almeida, Joy C MacDermid, Tatiana Barcelos Pontes, Clarissa Cardoso Dos Santos-Couto-Paz, Licia Maria H da Mota, João Paulo C Matheus
STUDY DESIGN: Cross-sectional descriptive study. INTRODUCTION: Osteoarthritis (OA) is the most prevalent musculoskeletal disease in the adult and older adult populations. The use of orthoses to stabilize the thumb's articular complex is one of the most common conservative management strategies. Despite substantial research about this topic, there is insufficient evidence about the optimal use of orthoses to inform clinical practice, contributing to practice variations within and across health professionals...
October 19, 2016: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
Fabiana de Salvi Guimarães, Wilson Max Almeida Monteiro de Moraes, Luis Henrique Marchesi Bozi, Pâmela R Souza, Ednei Luiz Antonio, Danilo Sales Bocalini, Paulo José Ferreira Tucci, Daniel Araki Ribeiro, Patricia Chakur Brum, Alessandra Medeiros
Dexamethasone is a potent and widely used anti-inflammatory and immunosuppressive drug. However, recent evidences suggest that dexamethasone cause pathologic cardiac remodeling, which later impairs cardiac function. The mechanism behind the cardiotoxic effect of dexamethasone is elusive. The present study aimed to verify if dexamethasone-induced cardiotoxicity would be associated with changes in the cardiac net balance of calcium handling protein and calcineurin signaling pathway activation. Wistar rats (~400 g) were treated with dexamethasone (35 µg/g) in drinking water for 15 days...
October 19, 2016: Molecular and Cellular Biochemistry
Vicente de Paulo R da Silva, Sonaly D de Oliveira, Célia C Braga, José Ivaldo B Brito, Francisco de Assis S de Sousa, Romildo M de Holanda, João Hugo B C Campos, Enio P de Souza, Armando César R Braga, Rafaela S Rodrigues Almeida, Lincoln E de Araújo
Virtual water trade is often considered a solution for restricted water availability in many regions of the world. Brazil is the world leader in the production and export of various agricultural and livestock products. The country is either a strong net importer or a strong net exporter of these products. The objective of this study is to determine the volume of virtual water contained in agricultural and livestock products imported/exported by Brazil from 1997 to 2012, and to define the water self-sufficiency index of agricultural and livestock products in Brazil...
October 16, 2016: Journal of Environmental Management
Francis D O Ablan, B Logan Spaller, Kaitlyn I Abdo, Paulo F Almeida
Hundreds of cationic antimicrobial and cell-penetrating peptides (CPPs) form amphipathic α-helices when bound to lipid membranes. Here, we test two hypotheses for the differences in the ability of these peptides to translocate across membranes. The first, which we now call the hydrophobicity hypothesis, is that peptide translocation is determined by the Gibbs energy of insertion into the bilayer from the membrane interface. The second, which we call the charge-distribution hypothesis, is that translocation is determined by whether the distribution of cationic residues in the peptide can transiently stabilize a high-energy inserted intermediate by forming salt bridges to the phosphates of lipid headgroups...
October 18, 2016: Biophysical Journal
Carla Pereira, Catarina Moreirinha, Magdalena Lewicka, Paulo Almeida, Carla Clemente, Jesús L Romalde, Maria L Nunes, Adelaide Almeida
In the present study two new phages (phT4A and ECA2) were characterized and their efficacy was evaluated separately and in cocktail (phT4A/ECA2) to control Escherichia coli. The isolated phages, phT4A and ECA2, belonged to the Myoviridae and Podoviridae family, respectively and both are safe (no integrase and toxin codifying genes) to be used in bacterial control. In general, the increase of multiplicity of infection (MOI) from 1 to 100 promoted a significant increase in the efficiency of phage phT4A and phage cocktail phT4A/ECA2...
October 15, 2016: Virus Research
Diogo F Almeida, Rui B Ruben, João Folgado, Paulo R Fernandes, Emmanuel Audenaert, Benedict Verhegghe, Matthieu De Beule
Femur segmentation can be an important tool in orthopedic surgical planning. However, in order to overcome the need of an experienced user with extensive knowledge on the techniques, segmentation should be fully automatic. In this paper a new fully automatic femur segmentation method for CT images is presented. This method is also able to define automatically the medullary canal and performs well even in low resolution CT scans. Fully automatic femoral segmentation was performed adapting a template mesh of the femoral volume to medical images...
October 14, 2016: Medical Engineering & Physics
Raíssa Nunes Dos Santos, Fabrício Souza Campos, Nathalia Rammé Medeiros de Albuquerque, Fernando Finoketti, Rayra Almeida Côrrea, Lucia Cano-Ortiz, Felipe Lopes Assis, Thalita Souza Arantes, Paulo Michel Roehe, Ana Cláudia Franco
Members of the family Marseilleviridae are giant viruses that have the ability to infect amoebas. Such viruses were initially described in 2009. Since then, this family has grown, and diverse members have been found in different environments and geographic locations. Previous phylogenetic analyses suggested the existence of four marseillevirus lineages. A fourth lineage was described with the discovery of the Brazilian marseillevirus (BrMr), isolated from Pampulha Lake, Brazil. Here we describe the isolation and characterization of the Golden marseillevirus (GMar), a new marseillevirus isolated from golden mussels (Limnoperna fortunei) in South of Brazil...
October 14, 2016: Scientific Reports
Graziella Anselmo Joanitti, Rayane Ganassin, Mosar Rodrigues Corrêa, João Paulo Figueiró Longo, Cheng-Shi Jiang, Jinsong Gu, Sandra Milena Leal Pinto, Maria de Fátima Menezes Almeida Dos Santos, Ricardo Bentes de Azevedo, Luis Alexandre Muehlmann
Nanotechnology has provided powerful tools to improve the chemotherapy of cancer. Different nanostructures have been developed which deliver the anticancer drugs more selectively to tumor than to healthy tissues. The result has generally been the increase in efficacy and safety of classical anticancer drugs. In recent years, several studies have focused not only on the delivery of anticancer drugs to tumors, but also on delivering the drugs to specific organelles of cancer cells. Endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria, and nucleus have been the targets of different nanostructured drug delivery systems developed with the goal of circumventing drug-resistance, increasing drug efficacy, and so on...
October 13, 2016: Mini Reviews in Medicinal Chemistry
Samuel Paulo Cibulski, Franciele Maboni Siqueira, Thais Fumaco Teixeira, Fabiana Quoos Mayer, Luiz Gonzaga Almeida, Paulo Michel Roehe
Mycoplasmas are major contaminants of mammalian cell cultures. Here, the complete genome sequence of Mycoplasma hyorhinis recovered from Madin-Darby bovine kidney (MDBK) cells is reported.
October 13, 2016: Genome Announcements
Márcia Oliveira Staffa Tironi, José Mário Meira Teles, Dalton de Souza Barros, Débora Feijó Villas Bôas Vieira, Colbert Martins da Silva Filho, Davi Felix Martins Júnior, Marcos Almeida Matos, Carlito Lopes Nascimento Sobrinho
OBJECTIVE: To estimate the prevalence of burnout in intensivist doctors working in adult, pediatric and neonatal intensive care units in five Brazilian capitals. METHODS: Descriptive epidemiological study with a random sample stratified by conglomerate with 180 intensivist doctors from five capitals representing the Brazilian geographic regions: Porto Alegre (RS), Sao Paulo (SP), Salvador (BA), Goiania (GO) and Belem (PA). A self-administered questionnaire examining sociodemographic data and the level of burnout was evaluated through the Maslach Burnout Inventory...
September 2016: Revista Brasileira de Terapia Intensiva
Mariah J King, Ashley L Bennett, Paulo F Almeida, Hee-Seung Lee
δ-lysin, secreted by a Gram-positive bacterium Staphylococcus aureus, is a 26-residue membrane active peptide that shares many common features with antimicrobial peptides (AMPs). However, it possesses a few unique features that differentiate itself from typical AMPs. In particular, δ-lysin has zero net charge, even though it has many charged residues, and it preferentially lyses eukaryotic cells over bacterial cells. Here, we present the results of coarse-grained molecular dynamics simulations of δ-lysin interacting with a zwitterionic membrane over a wide range of peptide concentrations...
October 6, 2016: Biochimica et Biophysica Acta
Margarida Gonçalves, Ana Pontes, Pedro Almeida, Raquel Barbosa, Marta Serra, Diego Libkind, Mathias Hutzler, Paula Gonçalves, José Paulo Sampaio
Beer is one of the oldest alcoholic beverages and is produced by the fermentation of sugars derived from starches present in cereal grains. Contrary to lager beers, made by bottom-fermenting strains of Saccharomyces pastorianus, a hybrid yeast, ale beers are closer to the ancient beer type and are fermented by S. cerevisiae, a top-fermenting yeast. Here, we use population genomics to investigate (1) the closest relatives of top-fermenting beer yeasts; (2) whether top-fermenting yeasts represent an independent domestication event separate from those already described; (3) whether single or multiple beer yeast domestication events can be inferred; and (4) whether top-fermenting yeasts represent non-recombinant or recombinant lineages...
October 4, 2016: Current Biology: CB
Rita Veiga Ferraz, Marta Andrade, Filipa Silva, Paulo Andrade, Cláudia Carvalho, José Pinheiro Torres, Jorge Almeida, António Sarmento, Lurdes Santos
Chronic Coxiella burnetii endocarditis usually develops in people with underlying heart disease and accounts for 60-70% of chronic Q fever. Onset is generally insidious and manifestations are atypical. The authors report a case of Coxiella burnetii prosthetic valve endocarditis in a 53 years- old patient with recurrent mechanical valve dehiscence on mitral position. He lived in a rural area with sheep and goats on the surroundings. During a 9 year- period, he was submitted to three cardiac mitral valve surgeries two of which with no Q fever diagnosis suspicion...
2016: IDCases
Sílvia M Almeida, José M Furtado, Paulo Mascarenhas, Maria E Ferraz, Luís R Silva, José C Ferreira, Mariana Monteiro, Manuel Vilanova, Fernando P Ferraz
OBJECTIVE: To develop and cross-validate predictive models for percentage body fat (%BF) from anthropometric measurements [including BMI z-score (zBMI) and calf circumference (CC)] excluding skinfold thickness. METHODS: A descriptive study was carried out in 3,084 pre-pubertal children. Regression models and neural network were developed with %BF measured by Bioelectrical Impedance Analysis (BIA) as the dependent variables and age, sex and anthropometric measurements as independent predictors...
September 2016: Obesity Science & Practice
Kamila L N Bandeira, Felipe Medeiros Simbras, Elaine Batista Machado, Diogenes de Almeida Campos, Gustavo R Oliveira, Alexander W A Kellner
Titanosaurian dinosaurs include some of the largest land-living animals that ever existed, and most were discovered in Cretaceous deposits of Argentina. Here we describe the first Brazilian gigantic titanosaur, Austroposeidon magnificus gen. et sp. nov., from the Late Cretaceous Presidente Prudente Formation (Bauru Group, Paraná Basin), São Paulo State, southeast Brazil. The size of this animal is estimated around 25 meters. It consists of a partial vertebral column composed by the last two cervical and the first dorsal vertebrae, all fairly complete and incomplete portions of at least one sacral and seven dorsal elements...
2016: PloS One
João Paulo Felix Augusto De Almeida, Francisco Dal Vechio, Mauro Jr Teixeira, Miguel Trefaut Rodrigues, Tamí Mott
To date, 22 species of amphisbaenids have been recorded at Brazilian Amazon (Ribeiro et al. 2008), six of them are small and have two pre-cloacal pores (Hoogmoed & Ávila-Pires 1991; Teixeira Jr. et al. 2014). Most of these species have narrow distributions, and its biology and phylogenetic relationships are poorly understood (Hoogmoed & Ávila-Pires 1991). Amphisbaena mitchelli Procter, 1923 and A. miringoera Vanzolini, 1971 share several morphological similarities that could reflect phylogenetic relatedness (Vanzolini 1971)...
September 16, 2016: Zootaxa
Maria-Cristina de C Brandileone, Rosemeire C Zanella, Samanta C G Almeida, Angela P Brandao, Ana F Ribeiro, Telma-Regina M P Carvalhanas, Helena Sato, Ana-Lúcia Andrade, Jennifer R Verani
In March 2010, Brazil introduced the 10-valent pneumococcal conjugate vaccine (PCV10) in the routine infant immunization program using a 4-dose schedule and catch-up for children <23months. We investigated PCV10 effect on nasopharyngeal carriage with vaccine-type Streptococcus pneumoniae (Spn) and non-typeable Haemophilus influenzae (NTHi) among children in São Paulo city. Cross-sectional surveys were conducted in 2010 (baseline) and 2013 (post-PCV10). Healthy PCV-naïve children aged 12-23months were recruited from primary health centers during immunization campaigns...
September 28, 2016: Vaccine
Carolina Lage Goulart, Livia Carvalho Barbosa, Paulo Mascarello Bisch, Wanda Maria Almeida von Krüger
All cells are subjected to oxidative stress, a condition in which reactive oxygen species (ROS) production exceeds elimination. Bacterial defenses against ROS include synthesis of antioxidant enzymes like peroxidases and catalases. Vibrio cholerae can produce two distinct catalases, KatB and KatG, which contribute to ROS homeostasis. In this study, we analyzed the mechanism behind katG and katB expression in two V. cholerae O1 pandemic strains, O395 and N16961, respectively of Classical and El Tor biotypes...
September 22, 2016: Microbiology
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