12 documents found, page 1 of 2
Cefepime and amoxicillin increase metabolism and enhance caspofungin tolerance ...
Cordeiro, Rossana de Aguiar; Evangelista, Antonio Jose de Jesus; Serpa, Rosana; Andrade, Ana Raquel Colares de; Mendes, Patrícia Bruna LeiteIt is well known that prolonged antibiotic therapy alters the mucosal microbiota composition, increasing the risk of invasive fungal infection (IFI) in immunocompromised patients. The present study investigated the direct effect of b-lactam antibiotics cefepime (CEF) and amoxicillin (AMOX) on biofilm production by Candida albicans ATCC 10231. Antibacterials at the peak plasmatic concentration of each drug were ...
An alternative method for the analysis of melanin production in Cryptococcus ne...
Brilhante, Raimunda S. N.; España, Jaime D. A.; Alencar, Lucas Pereira de; Pereira, Vandbergue S.; Castelo-Branco, Débora de S. C. M.Melanin is an important virulence factor for several microorganisms, including Cryptococcus neoformans sensu lato and Cryptococcus gattii sensu lato, thus, the assessment of melanin production and its quantification may contribute to the understanding of microbial pathogenesis. The objective of this study was to standardise an alternative method for the production and indirect quantification of melanin in C. ne...
Aeromonas and Plesiomonas species from scarlet ibis ( Eudocimus ruber ) and the...
Castelo-Branco, Débora Souza Collares Maia; Silva, Aline Lobão da; Monteiro, Frederico Ozanan Barros; Guedes, Glaucia Morgana de MeloThe present study aimed at evaluating the role of captive scarlet ibises (Eudocimus ruber) and their environment as reservoirs of Aeromonas spp. and Plesiomonas spp., and analyzing the in vitro antimicrobial susceptibility and virulence of the recovered bacterial isolates. Thus, non-lactose and weak-lactose fermenting, oxidase positive Gram-negative bacilli were recovered from cloacal samples (n = 30) of scarle...
Azole resistance in Candida albicans from animals: Highlights on efflux pump ac...
Rocha, Marcos Fábio Gadelha; Bandeira, Silviane Praciano; Alencar, Lucas Pereira de; Melo, Luciana Magalhães; Sales, Jamille AlencarThis study investigated potential mechanisms of azole resistance among Candida albicans from animals, including efflux pump activity, ergosterol content and gene expression. For this purpose, 30 azole-resistant C. albicans strains from animals were tested for their antifungal susceptibility, according to document M27-A3, efflux pump activity by rhodamine 6G test, ergosterol content and expression of the genes C...
Cross-resistance to fluconazole induced by exposure to the agricultural azole t...
Rocha, Marcos Fabio Gadelha; Alencar, Lucas Pereira de; Araújo Neto, Manoel Paiva de; Melo, Luciana Magalhães; Bandeira, Silviane Praciano; Ponte, Y. B.This study aimed to investigate the influence of tetraconazole and malathion, both used in agricultural activities, on resistance to fluconazole, itraconazole and voriconazole in Candida parapsilosis ATCC 22019. The susceptibility to tetraconazole, malathion, fluconazole, itraconazole and voriconazole, through broth microdilution. Then, 12 independent replicates, were separated and exposed to four treatment gro...
Enterobacteria and Vibrio from Macrobrachium amazonicum prawn farming in Fortal...
Castelo-Branco, D ebora de Souza Collares Maia; Sales, Jamille Alencar; Brilhante, Raimunda Sâmia Nogueira; Guedes, Glaucia Morgana de MeloObjective: To investigate the isolation of enterobacteria associated with Macrobrachium amazonicum (M. amazonicum) farming and evaluate the in vitro antimicrobial susceptibility of Vibrio strains. Methods: Strains were isolated from female M. amazonicum prawns and environmental and hatchery water. Biochemical assays were used to identify bacterial genera and those belonging to the genus Vibrio were submitted to...
Vibrio spp. from Macrobrachium amazonicum prawn farming are inhibited by Moring...
Brilhante, Raimunda Sâmia Nogueira; Sales, Jamille Alencar; Sampaio, Celia Maria de Souza; Barbosa, Francisco Geraldo; Paiva, Manoel de Araújo NetoObjective To investigate the in vitro antimicrobial potential of extracts of stem, leaves, flowers, pods and seeds of Moringa oleifera (M. oleifera) against Vibrio spp. from hatchery water and the prawn Macrobrachium amazonicum. Methods The ethanol extracts of stem, leaves, pods and seeds and chloroform extract of flowers of M. oleifera were tested against Vibrio cholerae (V. cholerae) serogroups non-O1/non-O13...
Evidence of fluconazole-resistant Candida species in tortoises and sea turtles
Brilhante, Raimunda Sâmia Nogueira; Rodrigues, Pedro Henrique de Aragão; Alencar, Lucas Pereira de; Riello, Giovanna Barbosa; Ribeiro, Joyce FontelesThe aim of this study was to evaluate the antifungal susceptibility of Candida spp. recovered from tortoises ( Chelonoidis spp.) and sea turtles ( Chelonia mydas , Caretta caretta , Lepidochelys oli- vacea , Eretmochelys imbricata ). For this purpose, material from the oral cavity and cloaca of 77 animals (60 tortoises and 17 sea turtles) was collected. The collected specimens were seeded on 2 % Sabouraud dextr...
β-Lactam antibiotics and vancomycin inhibit the growth of planktonic and biofil...
Sidrim, José J.C.; Teixeira, Carlos E.C.; Cordeiro, Rossana A.; Brilhante, Raimunda S.N.; Castelo-Branco, Débora S.C.M.; Bandeira, Silviane P.The aim of this study was to evaluate the effects of cefepime, meropenem, piperacillin/tazobactam (TZP) and vancomycin on strains of Candida albicans and Candida tropicalis in planktonic and biofilm forms. Twenty azole-derivative-resistant strains of C. albicans (n = 10) and C. tropicalis (n = 10) were tested. The susceptibility of planktonic Candida spp. to the antibacterial agents was investigated by broth mi...
Easy storage strategies for sporothrix spp. strains
Brilhante, Raimunda Sâmia Nogueira; Silva, Natalya Fechine; Lima, Rita Amanda Chaves de; Caetano, Érica Pacheco; Alencar, Lucas Pereira deThe present study evaluated the maintenance of Sporothrix spp. (6 Sporothrix brasiliensis;6S. schenckii;5 S. mexicana, and 3 S. globosa) in saline at 4 C, and in 10% glycerol plus either 10% lactose or 10% sucrose, at -20 C and -80 C. Viability was assessed after 3, 6, and 9 months of storage, through the recovery of strains on potato dextrose agar and analysis of macro- and micromorphological features. Conidiu...