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Mayaro virus induction of oxidative stress is associated with liver pathology i...
Caetano, Camila Carla da Silva; Camini, Fernanda Caetano; Almeida, Letícia Trindade; Ferraz, Ariane Coelho; Silva, Tales Fernando daMayaro virus (MAYV) causes Mayaro fever in humans, a self-limiting acute disease, with persistent arthralgia and arthritis. Although MAYV has a remerging potential, its pathogenic mechanisms remain unclear. Here, we characterized a model of MAYV infection in 3–4-week BALB/c mice. We investigated whether the liver acts as a site of viral replication and if the infection could cause histopathological alterations ...
Data set on the bioprecipitation of sulfate and trivalent arsenic by acidophili...
Matos, Letícia Paiva de; Costa, Patrícia Freitas; Moreira, Mariana; Gomes, Paula Cristine Silva; Silva, Silvana de QueirozData presented here are related to the original paper “Simultaneous removal of sulfate and arsenic using immobilized non-traditional sulfate reducing bacteria (SRB) mixed culture and alternative low-cost carbon sources ”published by same authors (Matos et al., 2018) [1]. The data set here presented aims to facilitate this paper comprehension by giving readers some additional information. Data set includes a bri...
Application of residual yeast as a source of redox mediators for the anaerobic ...
Victral, Davi Madureira; Aquino, Sergio Francisco de; Silva, Silvana de Queiroz; Baeta, Bruno Eduardo LoboThis work investigated the anaerobic degradation of the model azo dye Remazol Yellow Gold RNL in batch reactors using discharged residual yeast as the source of redox mediators (RM). Two yeast lysis methods (mechanical lysis and sonication) were tested and optimized to produce a riboflavin-rich yeast lysate. The reactors were operated at 25 oC for 48 hours, evaluating the effect of external carbon source (gluco...
Influence of the applied organic load (OLR) on textile wastewater treatment usi...
Baeta, Bruno Eduardo Lobo; Lima, Diego Roberto de Sousa; Silva, Silvana de Queiroz; Aquino, Sergio Francisco deThis paper evaluated the treatment of textile wastewater in submerged anaerobic membrane bioreactors (SAMBR) operated on a bench scale. Particularly, the influence of operational conditions, such as the applied organic rate (OLR) and the dilution factor (for toxicity attenuation) of the textile wastewater, was evaluated on color and organic matter removal. In addition, the effect of powdered activated carbon (P...
Characterization of enalapril and ranitidine chlorination by-products by liquid...
Quintão, Frederico Jehár Oliveira; Souza, Mariana Pierotti de; Silva, Silvana de Queiroz; Aquino, Sergio Francisco deDue to its low cost, its capability for disinfection and oxidation, chlorination using gaseous chlorine or hypochlorite salts, has also been commonly applied in water treatment plants for oxidation and disinfection purposes. Little is known about the identity and toxicity of by-products resulting from the chlorination of pharmaceutical micropollutants, such as enalapril (ENA) and ranitidine (RAN). ENA and RAN c...
Oxidative stress in Mayaro virus infection.
Camini, Fernanda Caetano; Caetano, Camila Carla da Silva; Almeida, Letícia Trindade; Guerra, Joyce Ferreira da Costa; Silva, Breno de MelloMayaro virus (MAYV) is a neglected tropical arbovirus that causes a febrile syndrome that is sometimes accompanied by incapacitating arthritis/arthralgia. The pathogenesis of MAYV has not been completely defined and oxidative stress mediated by an increase in reactive oxygen species (ROS) and/or depletion of antioxidant defences has been found to contribute to several aspects of viral disease. To investigate wh...
High resolution mass spectrometry elucidation of captopril´s ozonation and chlo...
Quintão, Frederico Jehár Oliveira; Brandão, Geraldo Célio; Silva, Silvana de Queiroz; Aquino, Sergio Francisco de; Afonso, Robson José de Cássia FrancoThe article evaluated the degradation of the captopril in aqueous solution after ozonation and chlorination. The process was continuously monitored focusing on the identification, mass spectrometry and elucidation of its by-products by applying direct infusion and high performance liquid chromatography, electrospray ionization high resolution mass spectrometry, in the negative ion mode. The cytotoxicity of its ...
Considerações práticas sobre o teste de demanda química de oxigênio (DQO) aplic...
Aquino, Sergio Francisco de; Silva, Silvana de Queiroz; Chernicharo, Carlos Augusto de LemosEste artigo apresenta resultados de testes laboratoriais que investigaram a influencia dos ions cloreto, amonium, ferro e sulfeto no teste de demanda quimica de oxigenio (DQO), bem como valores dos coeficientes de conversao da matéria organica especifica (proteinas, carboidratos e lipideos) determinados empiricamente. O artigo apresenta, ainda, resultados da comparacao dos metodos colorimetrico e titulometrico ...
Microbial dynamics during azo dye degradation in a UASB reactor supplied with y...
Silva, Silvana de Queiroz; Silva, Débora Cristiane; Lanna, Maria Célia da Silva; Baeta, Bruno Eduardo Lobo; Aquino, Sergio Francisco deThe present work aimed to investigate the microbial dynamics during the anaerobic treatment of the azo dye blue HRFL in bench scale upflow anaerobic sludge bed (UASB) reactor operated at ambient temperature. Sludge samples were collected under distinct operational phases, when the reactor were stable (low variation of color removal), to assess the effect of glucose and yeast extract as source of carbon and redo...
Degradation of a model azo dye in submerged anaerobic membrane bioreactor (SAMB...
Baeta, Bruno Eduardo Lobo; Luna, H. J.; Sanson, Ananda Lima; Silva, Silvana de Queiroz; Aquino, Sergio Francisco deThis work investigated the anaerobic degradation of the model azo dye Remazol Yellow Gold RNL in an upflow anaerobic sludge blanket reactor (UASB) and two submerged anaerobic membrane (SAMBR) bioreactors, one of which (SAMBR-1) was operated with powdered activated carbon (PAC) in its interior. The reactors were operated at 35 _C with a hydraulic retention time of 24 h in three operational phases, aimed to asses...