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Paulo F Almeida

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https://www.readbyqxmd.com/read/28522008/chitosan-chondroitin-sulfate-hydrogels-prepared-in-hmim-hso4-ionic-liquid
#1
Cátia S Nunes, Kessily B Rufato, Paulo R Souza, Elizângela A M S de Almeida, Michael J V da Silva, Débora B Scariot, Celso V Nakamura, Fernanda A Rosa, Alessandro F Martins, Edvani C Muniz
[Hmim][HSO4] ionic liquid (IL) and bio-renewable sources as chitosan (CHT) and chondroitin sulfate (CS) were used to yield hydrogel-based materials (CHT/CS). The use of IL to solubilize both polysaccharides was considered an innovative way based on "green chemistry" principle, aiming the production of CHT/CS blended systems. CHT/CS hydrogels were carried out in homogeneous medium from short dissolution times. The hydrogels were characterized and achieved with excellent stabilities (in the 1.2-10pH range), larger swelling capacities, as well as devoid of cytotoxicity towards the normal VERO and diseased HT29 cells...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28454763/sources-and-distribution-of-polycyclic-aromatic-hydrocarbons-pahs-and-organic-matter-in-surface-sediments-of-an-estuary-under-petroleum-activity-influence-todos-os-santos-bay-brazil
#2
Rodrigo A Nascimento, Marcos de Almeida, Narayana C F Escobar, Sergio L C Ferreira, Jefferson Mortatti, Antônio F S Queiroz
The present study evaluated the origin and distribution of polycyclic aromatic hydrocarbons (PAHs) and the organic matter (OM) in the surface sediment of the São Paulo River estuary, Todos os Santos Bay (TSB), Brazil. The samples were collected in the rainy (CP1) and the dry (CP2) seasons. We analyzed the 16 PAHs from the United States Environmental Protection Agency (US EPA) priority pollutant list, total organic carbon (TOC), total nitrogen (N), and stable carbon isotope (δ(13)C). The total concentration of PAHs ranged from 11...
April 25, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28437446/solid-state-characterization-and-theoretical-study-of-non-linear-optical-properties-of-a-fluoro-n-acylhydrazide-derivative
#3
Rosemberg F N Rodrigues, Leonardo R Almeida, Florisberto G Dos Santos, Paulo S Carvalho, Wanderson C de Souza, Kleber S Moreira, Gilberto L B de Aquino, Clodoaldo Valverde, Hamilton B Napolitano, Basílio Baseia
In this work we determine the linear and non-linear optical properties of a Fluoro-N-Acylhydrazide derivative (FBHZ), using a combined supermolecule approach and an iterative scheme of electrostatic polarization, where the atoms of neighbouring molecules are represented by point charges. Our results for non-linear optics (NLO) are comparable to those found experimentally, suggesting that FBHZ constitutes an attractive object for future studies and for use as an interesting material for third-order NLO applications...
2017: PloS One
https://www.readbyqxmd.com/read/28435911/is-cell-salvage-cost-effective-in-posterior-arthrodesis-for-adolescent-idiopathic-scoliosis-in-the-public-health-system
#4
José A A Oliveira, Fernando A M Façanha Filho, Francisco V Fernandes, Paulo C Almeida, Vládia F de Oliveira, Saulo R Lima Verde
BACKGROUND: To evaluate the efficacy and cost-effectiveness of cell salvage (CS) in reducing allogeneic transfusion in patients undergoing surgery for idiopathic scoliosis. METHODS: A case-control study with 42 patients with adolescent idiopathic scoliosis (AIS), submitted to posterior arthrodesis with instrumentation from 8/2008 to 12/2014 at the General Hospital of Fortaleza, Brazil. CS was used in 27 patients and not used in 15. The data was processed using the SPSS 20...
March 2017: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28327261/sex-differences-in-pediatric-dental-pain-perception
#5
Gabriela F Almeida, Daniele L Longo, Mariana Trevizan, Fabrício K de Carvalho, Paulo Nelson-Filho, Erika C Küchler, Alexandra M Queiroz
PURPOSE: To evaluate sex-related differences in dental pain perception in children. METHODS: Fifty-two children who received a dental procedure with local anesthesia were selected to participate. Pain perception levels were assessed with the Wong-Baker FACES Pain Rating Scale. Twenty-four and 48 hours following the procedure, the parents were contacted by phone for a verbal survey to assess their child's postoperative pain. Age, type of dental procedure, and behavior were also evaluated as covariables...
September 15, 2016: Journal of Dentistry for Children
https://www.readbyqxmd.com/read/28240141/preparation-characterization-and-biocompatibility-studies-of-thermoresponsive-eyedrops-based-on-the-combination-of-nanostructured-lipid-carriers-nlc-and-the-polymer-pluronic-f-127-for-controlled-delivery-of-ibuprofen
#6
Hugo Almeida, Paulo Lobão, Christian Frigerio, Joel Fonseca, Renata Silva, José Manuel Sousa Lobo, Maria Helena Amaral
CONTEXT: Nanostructured lipid carrier (NLC) dispersions present low viscosity and poor mucoadhesive properties, which reduce the pre-corneal residence time and consequently, the bioavailability of ocular drugs. OBJECTIVE: The aim of this study was to prepare thermoresponsive eyedrops based on the combination of lipid nanoparticles and a thermoresponsive polymer with mucomimetic properties (Pluronic® F-127). MATERIALS AND METHODS: NLCi dispersions were prepared based on the melt-emulsification and ultrasonication technique...
May 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28238773/inhibition-of-the-tetk-efflux-pump-by-the-essential-oil-of-chenopodium-ambrosioides-l-and-%C3%AE-terpinene-against-staphylococcus-aureus-is-58
#7
Paulo W Limaverde, Fábia F Campina, Francisco A B da Cunha, Francidalva D Crispim, Fernando G Figueredo, Luciene F Lima, Cícera Datiane de M Oliveira-Tintino, Yedda M L S de Matos, Maria Flaviana B Morais-Braga, Irwin R A Menezes, Valdir Q Balbino, Henrique D M Coutinho, José P Siqueira-Júnior, Jackson R G S Almeida, Saulo R Tintino
The use of natural products is crucial to suppress the development of these micro-organisms and to reduce the concentration necessary to inhibit these microrganisms, reducing the toxicity risks also. In this study, the essential oil from Chenopodium ambrosioides Leaves and its main constituent α-Terpinene were used in the antibacterial and potentiating activity of antibiotics and ethidium bromide assays, against the bacterial strains Staphylococcus aureus IS-58, carriers of efflux pumps. The Minimum Inhibitory Concentration (MIC) was determined using a microdilution method...
February 23, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28188835/automated-pulse-discrimination-of-two-freely-swimming-weakly-electric-fish-and-analysis-of-their-electrical-behavior-during-dominance-contest
#8
Rafael T Guariento, Thiago S Mosqueiro, Paulo Matias, Vinicius B Cesarino, Lirio O B Almeida, Jan F W Slaets, Leonardo P Maia, Reynaldo D Pinto
Electric fishes modulate their electric organ discharges with a remarkable variability. Some patterns can be easily identified, such as pulse rate changes, offs and chirps, which are often associated with important behavioral contexts, including aggression, hiding and mating. However, these behaviors are only observed when at least two fish are freely interacting. Although their electrical pulses can be easily recorded by non-invasive techniques, discriminating the emitter of each pulse is challenging when physically similar fish are allowed to freely move and interact...
February 7, 2017: Journal of Physiology, Paris
https://www.readbyqxmd.com/read/28182237/chromosomal-evolution-and-cytotaxonomy-in-wrasses-perciformes-labridae
#9
Leandro A H Almeida, Lorena A Nunes, Jamille A Bitencourt, Wagner F Molina, Paulo R A M Affonso
No abstract text is available yet for this article.
February 9, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28137428/statistical-process-control-of-cocrystallization-processes-a-comparison-between-opls-and-pls
#10
Ana F T Silva, Mafalda Cruz Sarraguça, Paulo R Ribeiro, Adenilson O Santos, Thomas De Beer, João Almeida Lopes
Orthogonal partial least squares regression (OPLS) is being increasingly adopted as an alternative to partial least squares (PLS) regression due to the better generalization that can be achieved. Particularly in multivariate batch statistical process control (BSPC), the use of OPLS for estimating nominal trajectories is advantageous. In OPLS, the nominal process trajectories are expected to be captured in a single predictive principal component while uncorrelated variations are filtered out to orthogonal principal components...
January 27, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28094794/diversity-and-carbon-storage-across-the-tropical-forest-biome
#11
Martin J P Sullivan, Joey Talbot, Simon L Lewis, Oliver L Phillips, Lan Qie, Serge K Begne, Jerôme Chave, Aida Cuni-Sanchez, Wannes Hubau, Gabriela Lopez-Gonzalez, Lera Miles, Abel Monteagudo-Mendoza, Bonaventure Sonké, Terry Sunderland, Hans Ter Steege, Lee J T White, Kofi Affum-Baffoe, Shin-Ichiro Aiba, Everton Cristo de Almeida, Edmar Almeida de Oliveira, Patricia Alvarez-Loayza, Esteban Álvarez Dávila, Ana Andrade, Luiz E O C Aragão, Peter Ashton, Gerardo A Aymard C, Timothy R Baker, Michael Balinga, Lindsay F Banin, Christopher Baraloto, Jean-Francois Bastin, Nicholas Berry, Jan Bogaert, Damien Bonal, Frans Bongers, Roel Brienen, José Luís C Camargo, Carlos Cerón, Victor Chama Moscoso, Eric Chezeaux, Connie J Clark, Álvaro Cogollo Pacheco, James A Comiskey, Fernando Cornejo Valverde, Eurídice N Honorio Coronado, Greta Dargie, Stuart J Davies, Charles De Canniere, Marie Noel Djuikouo K, Jean-Louis Doucet, Terry L Erwin, Javier Silva Espejo, Corneille E N Ewango, Sophie Fauset, Ted R Feldpausch, Rafael Herrera, Martin Gilpin, Emanuel Gloor, Jefferson S Hall, David J Harris, Terese B Hart, Kuswata Kartawinata, Lip Khoon Kho, Kanehiro Kitayama, Susan G W Laurance, William F Laurance, Miguel E Leal, Thomas Lovejoy, Jon C Lovett, Faustin Mpanya Lukasu, Jean-Remy Makana, Yadvinder Malhi, Leandro Maracahipes, Beatriz S Marimon, Ben Hur Marimon Junior, Andrew R Marshall, Paulo S Morandi, John Tshibamba Mukendi, Jaques Mukinzi, Reuben Nilus, Percy Núñez Vargas, Nadir C Pallqui Camacho, Guido Pardo, Marielos Peña-Claros, Pascal Pétronelli, Georgia C Pickavance, Axel Dalberg Poulsen, John R Poulsen, Richard B Primack, Hari Priyadi, Carlos A Quesada, Jan Reitsma, Maxime Réjou-Méchain, Zorayda Restrepo, Ervan Rutishauser, Kamariah Abu Salim, Rafael P Salomão, Ismayadi Samsoedin, Douglas Sheil, Rodrigo Sierra, Marcos Silveira, J W Ferry Slik, Lisa Steel, Hermann Taedoumg, Sylvester Tan, John W Terborgh, Sean C Thomas, Marisol Toledo, Peter M Umunay, Luis Valenzuela Gamarra, Ima Célia Guimarães Vieira, Vincent A Vos, Ophelia Wang, Simon Willcock, Lise Zemagho
Tropical forests are global centres of biodiversity and carbon storage. Many tropical countries aspire to protect forest to fulfil biodiversity and climate mitigation policy targets, but the conservation strategies needed to achieve these two functions depend critically on the tropical forest tree diversity-carbon storage relationship. Assessing this relationship is challenging due to the scarcity of inventories where carbon stocks in aboveground biomass and species identifications have been simultaneously and robustly quantified...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28087237/what-is-the-real-impact-of-urinary-incontinence-on-female-sexual-dysfunction-a-case-control-study
#12
Mariana Rhein Felippe, Joao Paulo Zambon, Marcia Eli Girotti, Juliana Schulze Burti, Claudia Rosenblatt Hacad, Lina Cadamuro, Fernando Almeida
INTRODUCTION: Urinary incontinence (UI) has been associated with negative effects on women's sexuality. Women's sexuality and sexual function are a complex issue, and the role of UI is not completely clear. AIM: To assess the impact of UI on female sexual function by comparing this population with a control group of continent women. METHODS: We performed a case-control study from August 2012 to September 2013. We evaluated continent and incontinent women (age range = 30-70 years) for their sexuality...
March 2017: Sexual Medicine
https://www.readbyqxmd.com/read/28076649/suicide-attempts-in-bipolar-i-patients-impact-of-comorbid-personality-disorders
#13
Severino Bezerra, Amanda Galvão-de-Almeida, Paula Studart, Davi F Martins, André C Caribé, Paulo A Schwingel, Ângela Miranda-Scippa
Objective: To evaluate the association between personality disorders (PDs) and suicide attempts (SAs) in euthymic patients with type I bipolar disorder (BD). Methods: One-hundred twenty patients with type I BD, with and without history of SA, were evaluated during euthymia. The assessment included a clinical and sociodemographic questionnaire, the Hamilton Depression Rating Scale, the Young Mania Rating Scale, the Barratt Impulsiveness Scale, and Structured Clinical Interviews for DSM-IV Axis I and II Disorders...
January 9, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/27884174/comparative-morphological-and-molecular-analysis-confirms-the-presence-of-the-west-nile-virus-mosquito-vector-culex-univittatus-in-the-iberian-peninsula
#14
Verónica Mixão, Daniel Bravo Barriga, Ricardo Parreira, Maria Teresa Novo, Carla Alexandra Sousa, Eva Frontera, Marietjie Venter, Leo Braack, António Paulo Gouveia Almeida
BACKGROUND: Culex univittatus and Culex perexiguus mosquitoes (Diptera: Culicidae) are competent arbovirus vectors, but with unclear morphological differentiation. In Europe, and in the Iberian Peninsula in particular, the presence of either or both species is controversial. However, in order to conduct adequate surveillance for arboviruses in this region, it is crucial to clarify whether Cx. univittatus is present or not, as well as to critically assess existing differentiation tools...
November 25, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27803094/fluconazole-in-the-treatment-of-cutaneous-leishmaniasis-caused-by-leishmania-braziliensis-a-randomized-controlled-trial
#15
Fernanda V de O Prates, Mayra E F Dourado, Silvana C Silva, Albert Schriefer, Luiz H Guimarães, Maria das Graças O Brito, Juliana Almeida, Edgar M Carvalho, Paulo R L Machado
BACKGROUND:  The treatment of cutaneous leishmaniasis (CL) caused by Leishmania braziliensis in Brazil with pentavalent antimony (Sb(v)) is associated with a high rate of failure, up to 45% of cases. In addition, Sb(v) can only administered parenterally and has important toxic effect. An effective, safe, and oral treatment for CL is required. METHODS:  A randomized controlled clinical trial was conducted to compare the efficacy and safety of high-dosage oral fluconazole (6...
January 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27760360/charge-distribution-fine-tunes-the-translocation-of-%C3%AE-helical-amphipathic-peptides-across-membranes
#16
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
https://www.readbyqxmd.com/read/27751655/fully-automatic-segmentation-of-femurs-with-medullary-canal-definition-in-high-and-in-low-resolution-ct-scans
#17
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
https://www.readbyqxmd.com/read/27720634/coarse-grained-simulations-of-hemolytic-peptide-%C3%AE-lysin-interacting-with-a-popc-bilayer
#18
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...
December 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27692770/effect-of-10-valent-pneumococcal-conjugate-vaccine-on-nasopharyngeal-carriage-of-streptococcus-pneumoniae-and-haemophilus-influenzae-among-children-in-s%C3%A3-o-paulo-brazil
#19
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
https://www.readbyqxmd.com/read/27625893/surgical-variation-of-microvascular-decompression-for-trigeminal-neuralgia-a-technical-note-and-anatomical-study
#20
Otávio T da Silva, César C de Almeida, Ricardo F Iglesio, Jessie M de Navarro, Manoel J Teixeira, Kleber P Duarte
BACKGROUND: In this article, the authors described their experience in microvascular decompression for trigeminal neuralgia. METHODS: The microvascular decompression technique used in the authors' institution is described in a step by step manner with some illustrative cases as well as a cadaver dissection to highlight the differences with other previously described techniques. RESULTS: Since 2013, 107 patients were operated in the Neurosurgery Division of the University of São Paulo using the described technique, with a shorter operative time and avoiding cerebellar retractor compared with classic techniques...
2016: Surgical Neurology International
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