Produção Nacional
Revisado por pares
Luciano Siqueira Freitas, Ricardo Vieira Rodrigues, Marcelo Hideo Okamoto, Luiz Roberto Louzada, Luı́s André Sampaio,
... of the marine pejerrey Odontesthes argentinensis larvae Luciano Siqueira Freitas, Luciano Siqueira Freitas Laboratório de Maricultura, Departamento de Oceanografia, ... BrazilSearch for more papers by this author Luciano Siqueira Freitas, Luciano Siqueira Freitas Laboratório de Maricultura, Departamento de Oceanografia, Fundação ...
Tópico(s): Coral and Marine Ecosystems Studies
2008 - Wiley | Aquaculture Research
Produção Nacional
Revisado por pares
Júlio César dos Santos, Renato Luiz Siqueira, Luciano Machado Gomes Vieira, Rodrigo Teixeira Santos Freire, Valdir Mano, Túlio Hallak Panzera,
Surface modification induced by sodium carbonate on coir fibres was studied in view of its application as a reinforcing agent in polyester and epoxy polymer fibre-reinforced composites. Coir fibres were treated with a 10 wt% sodium carbonate solution for different periods of time (24, 96 and 168 h) at room temperature. The surface treatment was evaluated by scanning electron microscopy, X-ray diffraction and thermogravimetric analysis. Tensile, flexural and impact properties of treated and untreated ...
Tópico(s): Polymer composites and self-healing
2018 - Elsevier BV | Polymer Testing
Produção Nacional
Revisado por pares
Raul Torres Rodrigues, Paulo V. Morais, Cristina Souza Freire Nordi, Michael J. Schöning, José R. Siqueira, Luciano Caseli,
Algal polysaccharides (extracellular polysaccharides) and carbon nanotubes (CNTs) were adsorbed on dioctadecyldimethylammonium bromide Langmuir monolayers to serve as a matrix for the incorporation of urease. The physicochemical properties of the supramolecular system as a monolayer at the air–water interface were investigated by surface pressure–area isotherms, surface potential–area isotherms, interfacial shear rheology, vibrational spectroscopy, and Brewster angle microscopy. The floating monolayers ...
Tópico(s): Electrochemical sensors and biosensors
2018 - American Chemical Society | Langmuir
Produção Nacional
Revisado por pares
Luiz Henrique Rodrigues Rola Possarle, José R. Siqueira, Luciano Caseli,
In this paper, carbon nanotubes (CNT) were adsorbed on stearic acid (SA) Langmuir monolayers to serve as matrices for the incorporation of asparaginase. The interaction between the components at the air-water interface was evaluated by surface pressure-area isotherms, surface potential-area isotherms, polarization-modulation reflection absorption infrared spectroscopy (PM-IRRAS), and Brewster angle microscopy (BAM). The enzyme expanded the monolayers and changed the thermodynamic and electrical properties ...
Tópico(s): Enzyme Catalysis and Immobilization
2020 - Elsevier BV | Colloids and Surfaces B Biointerfaces
Produção Nacional
Revisado por pares
José R. Siqueira, Luciano Caseli, Frank N. Crespilho, Valtencir Zucolotto, Osvaldo N. Oliveira,
This paper brings an overview of the use of nanostructured films in several types of biosensors, with emphasis on the advantageous control of molecular architecture which is typical of the layer-by-layer (LbL) and Langmuir–Blodgett films. Following introductory sections on film fabrication and detection methods, we concentrate on the immobilization of biomolecules on these nanostructured films used in units for biosensing. Important contributions in the literature in biosensors based on electrochemical ...
Tópico(s): Analytical Chemistry and Sensors
2009 - Elsevier BV | Biosensors and Bioelectronics
Produção Nacional
Revisado por pares
David Livingstone Alves Figueiredo, Rui Celso Martins Mamede, Rodrigo Proto‐Siqueira, Luciano Neder, Wilson A. Silva, Marco A. Zago,
Abstract Background. There is considerable interest in the expression of cancer testis (CT) antigens in human cancers, because they may serve as the basis for diagnostic tests or an immunologic approach to therapy, or as prognostic markers. Methods. On this basis, we evaluated by semiquantitative reverse‐transcriptase polymerase chain reaction (RT‐PCR) the expression of genes that code for tumor antigens (melanoma antigen‐1 [ MAGE ‐1], MAGE ‐4, MAGE ‐10, MAGE ‐12, B melanoma antigen, CTL‐recognized antigen ...
Tópico(s): vaccines and immunoinformatics approaches
2006 - Wiley | Head & Neck
Produção Nacional
Revisado por pares
Ana C. Xavier, Sheila Aparecida Coelho Siqueira, Luciano J. Costa, Thaís Mauad, Paulo Hil�rio Nascimento Saldiva,
Tópico(s): Genital Health and Disease
2005 - Springer Science+Business Media | Virchows Archiv
Produção Nacional
Revisado por pares
Marcela de Sá Barreto da Cunha, Egle M.A. Siqueira, Luciano S Trindade, Sandra Fernandes Arruda,
Vitamin A modulates inflammatory status, iron metabolism and erythropoiesis. Given that these factors modulate the expression of the hormone hepcidin (Hamp), we investigated the effect of vitamin A deficiency on molecular biomarkers of iron metabolism, the inflammatory response and the erythropoietic system. Five groups of male Wistar rats were treated: control (AIN-93G), the vitamin A-deficient (VAD) diet, the iron-deficient (FeD) diet, the vitamin A- and iron-deficient (VAFeD) diet or the diet with ...
Tópico(s): Erythrocyte Function and Pathophysiology
2014 - Elsevier BV | The Journal of Nutritional Biochemistry
Produção Nacional
Revisado por pares
Leonora Rios de Souza Moreira, Marcela de Carvalho Campos, Pedro Henrique Vieira Martins de Siqueira, Luciano Paulino Silva, Carlos André Ornelas Ricart, Pedro Alves Martins, Rayner Myr Lautherjung Queiroz, Edivaldo Ximenes Ferreira Filho,
Sugarcane bagasse was used as an inexpensive alternative carbon source for production of β-xylanases from Aspergillus terreus. The induction profile showed that the xylanase activity was detected from the 6th day of cultivation period. Two low molecular weight enzymes, named Xyl T1 and Xyl T2 were purified to apparent homogeneity by ultrafiltration, gel filtration and ion exchange chromatographies and presented molecular masses of 24.3and 23.60 kDa, as determined by SDS-PAGE, respectively. Xyl T1 ...
Tópico(s): Enzyme Catalysis and Immobilization
2013 - Academic Press | Fungal Genetics and Biology
Produção Nacional
Revisado por pares
Paulo Sampaio Gutierrez, Thiago Schultz, Sheila Aparecida Coelho Siqueira, Luciano de Figueiredo Borges,
A 54-year-old male entered the emergency room in cardiorespiratory arrest after syncope at home. Resuscitation was attempted, but the patient died a few hours later. At necropsy, aneurysms were found at the right and left anterior descending coronary arteries. At microscopic examination, there was no significant coronary atherosclerosis, and a dense inflammatory infiltrate was detected, with a high number of igG4-positive cells (94.0 positive cells/hpf). The case illustrates that IgG4-related disease ...
Tópico(s): Amyloidosis: Diagnosis, Treatment, Outcomes
2013 - Elsevier BV | Cardiovascular Pathology
Produção Nacional
Revisado por pares
D.C.B.L. Aroucha, Rodrigo Feliciano do Carmo, Luydson Richardson Silva Vasconcelos, Raul Emídio de Lima, T.F. Mendonça, Lucia Elena Alvarado-Arnez, Maria do Socorro Mendonça Cavalcanti, Maria Tereza Cartaxo Muniz, Marcílio L Aroucha, Érika Rabelo Forte de Siqueira, Luciano Beltrão Pereira, Patrícia Moura, Leila Maria Moreira Beltrão Pereira, Maria Rosângela Cunha Duarte Coêlho,
Hepatitis C virus (HCV) is the major cause of hepatocellular carcinoma (HCC). The risk to develop HCC increases with the severity of liver inflammation and hepatic fibrosis. It is believed that a balance between the releases of pro‐ and anti‐inflammatory cytokines will determine the clinical course of HCV and the risk to develop HCC. The inteleukin‐10 (IL‐10) and the tumor necrosis factor alpha (TNF‐α) play key roles in the Th1 and Th2 balance during the inflammatory response against HCV. The aim of ...
Tópico(s): Hepatitis B Virus Studies
2016 - Wiley | Journal of Medical Virology
Produção Nacional
Revisado por pares
Fabio Antonio Scholl, Paulo V. Morais, Rayla C. Gabriel, Michael J. Schöning, José R. Siqueira, Luciano Caseli,
In this paper, carbon nanotubes (CNTs) were incorporated in penicillinase-phospholipid Langmuir and Langmuir-Blodgett (LB) films to enhance the enzyme catalytic properties. Adsorption of the penicillinase and CNTs at dimyristoylphosphatidic acid (DMPA) monolayers at the air-water interface was investigated by surface pressure-area isotherms, vibrational spectroscopy, and Brewster angle microscopy. The floating monolayers were transferred to solid supports through the LB technique, forming mixed DMPA- ...
Tópico(s): Advanced biosensing and bioanalysis techniques
2017 - American Chemical Society | ACS Applied Materials & Interfaces
Produção Nacional
Revisado por pares
Rubem Ramos Rocha Filho, Djalma Cordeiro dos Santos, Antônia Sherlânea Chaves Véras, Michelle Christina Bernardo de Siqueira, Luciano Patto Novaes, Robert Emilio Mora-Luna, Carolina Corrêa de Figueiredo Monteiro, Marcelo Andrade Ferreira,
This study aimed to evaluate the effects of five forage cactus genotypes (“Gigante,” “Miúda," “IPA Sertânia," “Orelha de Elefante Mexicana” [OCP], and “Orelha de Elefante Africana” [ACP]) in sheep. The goal was also to show the importance of energy content compared with other forages produced in dryland conditions. Five male sheep cannulated were randomized in a 5 × 5 Latin square design. The experimental diets contained a genotype of spineless forage cactus (440 g/kg of dry matter [DM]), alfalfa hay (585 g/ ...
Tópico(s): Rangeland and Wildlife Management
2020 - Elsevier BV | Journal of Arid Environments
Produção Nacional
Revisado por pares
Mário G. Siqueira, Luciano Foroni, Roberto S. Martins, Gerson Chadi, Martijn J. A. Malessy,
BACKGROUND: In patients with supraclavicular injuries of the brachial plexus, the suprascapular nerve (SSN) is frequently reconstructed with a sural nerve graft coapted to C5. As the C5 cross-sectional diameter exceeds the graft diameter, inadequate positioning of the graft is possible. OBJECTIVE: To identify a specific area within the C5 proximal stump that contains the SSN axons and to determine how this area could be localized by the nerve surgeon, we conducted a microanatomic study of the intraplexal ...
Tópico(s): Shoulder and Clavicle Injuries
2010 - Lippincott Williams & Wilkins | Operative Neurosurgery
Produção Nacional
Revisado por pares
Thiago E. Goto, Carla Cristina Lopes, Helena B. Nader, Anielle Christine Almeida Silva, Noélio O. Dantas, José R. Siqueira, Luciano Caseli,
Cadmium selenide (CdSe) magic-sized quantum dots (MSQDs) are semiconductor nanocrystals with stable luminescence that are feasible for biomedical applications, especially for in vivo and in vitro imaging of tumor cells. In this work, we investigated the specific interaction of CdSe MSQDs with tumorigenic and non-tumorigenic cells using Langmuir monolayers and Langmuir-Blodgett (LB) films of lipids as membrane models for diagnosis of cancerous cells. Surface pressure-area isotherms and polarization ...
Tópico(s): Gold and Silver Nanoparticles Synthesis and Applications
2016 - Elsevier BV | Biochimica et Biophysica Acta (BBA) - Biomembranes
Produção Nacional
Revisado por pares
Paulo S. G. de Mattos Neto, João Fausto Lorenzato de Oliveira, Priscilla Bassetto, Hugo Valadares Siqueira, Luciano Barbosa, Emilly Pereira Alves, Manoel H. N. Marinho, Guilherme Ferretti Rissi, Li Fu,
The employment of smart meters for energy consumption monitoring is essential for planning and management of power generation systems. In this context, forecasting energy consumption is a valuable asset for decision making, since it can improve the predictability of forthcoming demand to energy providers. In this work, we propose a data-driven ensemble that combines five single well-known models in the forecasting literature: a statistical linear autoregressive model and four artificial neural networks: ( ...
Tópico(s): Smart Grid Energy Management
2021 - Multidisciplinary Digital Publishing Institute | Sensors
Produção Nacional
Revisado por pares
Paulo Albertini, Flávia Zanni Siqueira, Luciano Aparecido Tomé, Tânia Lisboa Machado,
Este estudo visa investigar se a atuação do psicanalista dissidente Wilhelm Reich no cenário científico-cultural da primeira metade do século passado permite associá-lo ao movimento de higiene mental. A fim de cumprirmos tal objetivo, duas direções de pesquisa foram assumidas. A primeira envolveu escritos sobre as origens e as orientações definidoras da moderna saúde pública, do higienismo e, em especial, do movimento de higiene mental. A segunda diz respeito a um levantamento na obra reichiana - ...
Tópico(s): Social Representations and Identity
2007 - UNIVERSIDADE ESTADUAL DE MARINGÁ | Psicologia em Estudo
Produção Nacional
Revisado por pares
Natália von Gal Milanezi, Diana Paola Gómez‐Mendoza, Félix Gonçalves de Siqueira, Luciano Paulino Silva, Carlos André Ornelas Ricart, Edivaldo Ximenes Ferreira Filho,
Tópico(s): Catalysis for Biomass Conversion
2011 - Springer Science+Business Media | BioEnergy Research
Produção Nacional
Revisado por pares
Guilherme Pugliesi, Gabriela Dalmaso de Melo, Júlio Barboza Silva, Alexandre Sardinha Carvalhêdo, Everton Lopes, Emivaldo de Siqueira Filho, Luciano Andrade Silva, Mário Binelli,
We aimed to study the association between CL characteristics assessed by color-Doppler ultrasonography (Doppler-US) at the time of embryo transfer (ET) and pregnancy rate (P/ET) in beef recipients. Estrous cycles of crossbred beef recipients were synchronized for timed-ET. On the day of ET (Day 7), CL area, proportion of luteal blood perfusion (BP), and the relationship between the largest dominant follicle (DF) and CL (ipsilateral or contralateral) were determined. Animals (n = 444) received an in vitro ...
Tópico(s): Reproductive Biology and Fertility
2019 - Elsevier BV | Theriogenology
Produção Nacional
Revisado por pares
Gilza Barcelos de Souza, Tiago Antônio de Oliveira Mendes, Patrícia Pereira Fontes, Vanessa de Almeida Barros, Amanda Bonoto Gonçalves, Thiago de Freitas Ferreira, Maximiller Dal-Bianco, Murilo Siqueira Alves, Luciano Gomes Fietto,
Dormancy-Associated gene 1/Auxin Repressed protein (DRM1/ARP) genes are responsive to hormones involved in defense response to biotic stress, such as salicylic acid (SA) and methyl jasmonate (MeJA), as well as to hormones that regulate plant growth and development, including auxins. These characteristics suggest that this gene family may be an important link between the response to pathogens and plant growth and development. In this investigation, the DRM1/ARP genes were identified in the genome of ...
Tópico(s): Plant Molecular Biology Research
2019 - Elsevier BV | Progress in Biophysics and Molecular Biology
Produção Nacional
Revisado por pares
Martin Metzger, Rudieri Souza, Leandro B. Lima, Débora Siqueira Bueno, Luciano Gonçalves, Chemutai Sego, José Donato, Sara J. Shammah‐Lagnado,
The habenula (Hb) is a phylogenetically old epithalamic structure differentiated into two nuclear complexes, the medial (MHb) and lateral habenula (LHb). After decades of search for a great unifying function, interest in the Hb resurged when it was demonstrated that LHb plays a major role in the encoding of aversive stimuli ranging from noxious stimuli to the loss of predicted rewards. Consistent with a role as an anti-reward center, aberrant LHb activity has now been identified as a key factor in ...
Tópico(s): Neuroscience and Neuropharmacology Research
2019 - Wiley | European Journal of Neuroscience
Produção Nacional
Revisado por pares
Edward Araujo Júnior, Hélio Antônio Guimarães Filho, Maurício Saito, Alexandra Pires, Ana Letícia Siqueira Pontes, Luciano Marcondes Machado Nardozza, Antônio Fernandes Moron,
Tópico(s): Tumors and Oncological Cases
2006 - Springer Science+Business Media | Archives of Gynecology and Obstetrics
Produção Nacional
Revisado por pares
Luı́s André Sampaio, Luciano Siqueira Freitas, Marcelo Hideo Okamoto, Luiz Roberto Louzada, Ricardo Vieira Rodrigues, Ricardo Berteaux Robaldo,
The Brazilian flounder, Paralichthys orbignyanus, is a promising candidate for aquaculture, especially due to the euryhalinity demonstrated experimentally for large juveniles (3 g) and sub-adults. Flounder are observed in estuaries and were already reared in fresh and salt water, however little is known with respect of salinity tolerance during their early development. The objective of this work was to evaluate the effects of salinity from fertilization to juvenile settlement. Three experiments were ...
Tópico(s): Aquaculture Nutrition and Growth
2006 - Elsevier BV | Aquaculture
Produção Nacional
Revisado por pares
Alex Haroldo Jeller, Dulce Helena Siqueira Silva, Luciano M. Lião, Vanderlan da Silva Bolzani, Maysa Furlan,
The triterpenes, 22β-hydroxypristimerin and cognatine, were isolated together with the known compounds pristimerin, maytenin, 20α-hydroxymaytenin, 22β-hydroxymaytenin, netzahualcoyol, netzahualcoyondiol and netzahualcoyone from root bark of Cheiloclinium cognatum. The structures of the isolated compounds were elucidated by interpretation of their spectral data, including gHMQC and gHMBC experiments.The isolates were investigated for their radical scavenging abilities through a spectrophotometric ...
Tópico(s): Phytochemical compounds biological activities
2004 - Elsevier BV | Phytochemistry
Produção Nacional
Revisado por pares
Angélica Goldoni, Camila Golfeto, Jane Beatriz Teixeira, Gislaine Blumm, Camila Mörschbächer Wilhelm, Franko Telöken, Eloisa Bianchi, Jairo Lizandro Schmitt, Günther Gehlen, Marco Antônio Siqueira Rodrigues, Luciano Basso da Silva,
Tópico(s): Pharmaceutical and Antibiotic Environmental Impacts
2014 - Springer Science+Business Media | Environmental Earth Sciences
Produção Nacional
Revisado por pares
Cláudia Regina Klauck, Marco Antônio Siqueira Rodrigues, Luciano Basso da Silva,
The disposal of municipal waste in landfills may pose an environmental problem because the product of the decomposition of these residues generates large volumes of leachate, which may present high toxicity. The aim of this study was to assess the toxic and genotoxic effects of a sample of untreated leachate in fish ( Leporinus obtusidens) and onions ( Allium cepa). The leachate was collected in a landfill located in the region of Vale do Rio dos Sinos, southern Brazil. The fish were exposed to raw ...
Tópico(s): Pesticide and Herbicide Environmental Studies
2013 - SAGE Publishing | Waste Management & Research The Journal for a Sustainable Circular Economy
Produção Nacional
Revisado por pares
Madalena C. S. Scalon, Ciliana Rechenmacher, Anna Maria Siebel, Michele Luz Kayser, Manoela Tressoldi Rodrigues, Sharbel Weidner Maluf, Marco Antônio Siqueira Rodrigues, Luciano Basso da Silva,
The present study aimed to evaluate the physicochemical parameters and the genotoxic potential of water samples collected in the upper, middle, and lower courses of the Sinos River, southern Brazil. The comet assay was performed in the peripheral blood of fish Hyphessobrycon luetkenii exposed under laboratory conditions to water samples collected in summer and winter in three sampling sites of Sinos River. Water quality analysis demonstrated values above those described in Brazilian legislation ...
Tópico(s): Carcinogens and Genotoxicity Assessment
2013 - Hindawi Publishing Corporation | The Scientific World JOURNAL
Produção Nacional
Revisado por pares
Laurine Lacerda Pigosso, Ana Flávia Alves Parente, Alexandre Siqueira Guedes Coelho, Luciano Paulino Silva, Clayton Luiz Borges, Alexandre Melo Bailão, Célia Maria de Almeida Soares,
The genus Paracoccidioides comprises a complex of phylogenetic species of dimorphic pathogenic fungi, the etiologic agents of paracoccidioidomycosis (PCM), a disease confined to Latin America and of marked relevance in its endemic areas due to its high frequency and severity. The members of the Paracoccidioides genus are distributed in distinct phylogenetic species (S1, PS2, PS3 and 01-like) that potentially differ in their biochemical and molecular characteristics. In this work, we performed the ...
Tópico(s): Plant Pathogens and Fungal Diseases
2013 - Academic Press | Fungal Genetics and Biology
Produção Nacional
Revisado por pares
Fabio Antonio Scholl, Danilo A. Oliveira, José R. Siqueira, Luciano Caseli,
Investigating the best combination of different materials like graphene oxide and phospholipids, as well as their physicochemical parameters, may permit exploring the use of this hybrid compound in new applications, such as the development of (bio)supercapacitor devices. In this study, Langmuir-Blodgett (LB) films onto conductive electrodes containing a nanostructured complex of graphene-oxide (GO)/manganese dioxide (MnO2) and dimyristoyl-phosphatidic acid (DMPA) were fabricated to investigate their ...
Tópico(s): Electrochemical sensors and biosensors
2023 - Elsevier BV | Colloids and Surfaces A Physicochemical and Engineering Aspects
Produção Nacional
Revisado por pares
Lucas A. Siqueira, Luciano F. Almeida, Julys Pablo Atayde Fernandes, Mário César Ugulino de Araújo, Ricardo A. C. Lima,
An ultrasonic reactor (UR) was developed and coupled to a digital movie-based flow-batch analyzer (DM-FBA) for the ultrasonic-assisted extraction (UAE) and fast determination of catalase and lipase activities in bovine and poultry livers. The lab-made UR mainly consisted of a borosilicate glass container and a piezoelectric disc. The DM-FBA mainly consisted of a webcam, an ultrasonic actuator controller, a peristaltic pump, six solenoid valves, a valve driver, a mixing chamber, a magnetic stirrer, ...
Tópico(s): Meat and Animal Product Quality
2021 - Elsevier BV | Ultrasonics Sonochemistry