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Silver colloidal nanoparticles : effect on matrix composition and structure of ...
Monteiro, D. R.; Silva, Sónia Carina; Negri, M.; Gorup, L. F.; Camargo, E. R.; Oliveira, Rosário; Barbosa, D. B.; Henriques, MarianaAim : The aim of this study was to assess the effect of different silver nanoparticles (SN) concentrations on the matrix composition and structure of Candida albicans and Candida glabrata biofilms. Methods and Results : Candida biofilms were developed in 6-well microtiter plates during 48 h. After, these biofilms were exposed to 13·5 or 54 μg SN ml−1 for 24 h. Then, extracellular matrices were extracted from bi...
Relación entre los depósitos de grasa corporal e el espesor da grasa perirenal ...
Silva, S; Guedes, C.; Mourão, J. L.; Pinheiro, V.; Monteiro, DEste trabajo tuvo como objetivo estudiar la metodología de ultrasonidos en tiempo real (UTR) para estimar las reservas de grasa de conejas con diferente condición corporal a partir de medidas de espesor da grasa perirenal, teniendo el riñón como referencia. Se han efectuado mediciones de espesor de grasa perirenal in vivo, en 21 conejas adultas, por la técnica de UTR y a continuación se han cuantificado los dif...
Silver nanoparticles : influence of stabilizing agent and diameter on antifunga...
Monteiro, D. R.; Silva, Sónia Carina; Negri, M.; Gorup, L. F.; Camargo, E. R.; Oliveira, Rosário; Barbosa, D. B.; Henriques, MarianaAim : The purpose of this work was to evaluate the size-dependent antifungal activity of different silver nanoparticles (SN) colloidal suspensions against Candida albicans and Candida glabrata mature biofilms. Methods and Results: The research presented herein used SN of three different average sizes (5, 10 and 60 nm), which were synthesized by the reduction of silver nitrate through sodium citrate and which w...
Effect of pretreatment of Candida biofilm cells with silver nanoparticles on th...
Monteiro, D. R.; Negri, M.; Silva, Sónia Carina; Camargo, E. R.; Gorup, L. F.; Oliveira, Rosário; Barbosa, D.; Henriques, MarianaObjectives: The pathogenicity of Candida spp. has been recognized by some factors, including adhesion to host cells or inert surfaces and biofilm formation. In addition, the dispersal of biofilm cells may act as a continuous source of infection. Thus, the aim of this study was to evaluate the adhesion capacity of Candida albicans and Candida glabrata cells recovered from Candida biofilms treated with silver nan...
Virulence factors of non-Candida albicans Candida species
Silva, Sónia Carina; Negri, M.; Monteiro, D. R.; Henriques, Mariana; Oliveira, Rosário; Azeredo, JoanaInfections caused by Candida species (candidosis) have greatly increased over recent years, mainly due to the escalation of the AIDS epidemic, population ageing, increasing number of immunocompromised patients and the more widespread use of indwelling medical devices. Besides Candida albicans, non-Candida albicans Candida (NCAC) species such as Candida glabrata, Candida tropicalis and Candida parapsilosis are n...
El manejo alimentario de los conejos en destete. Efecto sobre los rendimientos ...
Pinheiro, V.M,; Outor-Monteiro, D; Fontes, P; Steczova, L; Mourão, J.LEn este trabajo se estudiaron los efectos del tipo de pienso en el final de lactancia sobre los rendimientos de las conejas y de los gazapos. Se han utilizado 30 conejas en el día 22 de lactación, que se dividieron en 2 grupos de 15. En uno de estos grupos se ha suministrado alimento de conejas (Grupo C) y en otro pienso de gazapos (Grupo G). Este manejo se ha mantenido hasta el destete y después las madres ing...
Silver colloidal nanoparticles: antifungal effect against Candida albicans and ...
Monteiro, D. R.; Gorup, L. F.; Silva, Sónia Carina; Negri, M.; Camargo, E. R.; Oliveira, Rosário; Barbosa, D.; Henriques, MarianaThe aim of this study was to evaluate the effect of silver nanoparticles (SN) against Candida albicans and Candida glabrata adhered cells and biofilms. SN (average diameter 5 nm) were synthesized by silver nitrate reduction with sodium citrate and stabilized with ammonia. Minimal inhibitory concentration (MIC) tests were performed for C. albicans (n = 2) and C. glabrata (n = 2) grown in suspension following the...
Effect of silver nanoparticles against Candida albicans and Candida glabrata bi...
Monteiro, D. R.; Silva, Sónia Carina; Negri, M.; Camargo, E. R.; Oliveira, Rosário; Henriques, Mariana; Barbosa, D. B.Objectives: Fungal infections in immunocompromised patients have been contributing to the increasing morbidity and mortality of these patients, especially associated to yeast resistance to antifungal therapy. The increase in antibiotic-resistant microorganisms has prompted interest in the use of silver as an antimicrobial agent. Thus, the aim of this study was to evaluate the antifungal efficacy of silver nanop...
Mitochondrial control region haplotypes of the South American sea lion Otaria f...
Artico,L.O.; Bianchini,A.; Grubel,K.S.; Monteiro,D.S.; Estima,S.C.; de Oliveira,L.R.; Bonatto,S.L.; Marins,L.F.The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande), both in Southern Brazil. In this region, the species is continuously under the effec...
Strategies for mitigation of nitrogen environmental impact from swine production
Outor-Monteiro, D.; Pinheiro, Victor; Mourão, José Luís; Rodrigues, M.This work presents strategies that can be implemented in order to minimize the environmental impact of swine slurry on soil, water, and air. This reduction can be achieved through decrease in nitrogen excretion and ammonia emissions. The correct feed formulation according to animal requirements, the increase in diet digestibility and improvement in animal performance can reduce nitrogen excretion. The use of ad...
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