7 documents found, page 1 of 1
Isolation and genotyping of Clostridium perfringens from goats in Minas Gerais,...
Santana,Jordana Almeida; Ferreira,Ana Carolina de Andrade; Souza,Marina de Castro Campos de; Moreira,Maria Aparecida Scatamburlo; Lima,Magna CoroaABSTRACT: Despite the known importance of Clostridium perfringens as an enteropathogen in small ruminants, little is known about the role of its additional virulence factors or the frequency of the various C. perfringens genotypes in healthy goats; this complicates the laboratory diagnosis of the infections caused by this microorganism. In light of this, the aim of the present study was to isolate and genotype ...
Presence of Mycobacterium avium subsp. paratuberculosis (MAP) in Brazilian pati...
Carvalho,Isabel Azevedo; Schwarz,David Germano Gonçalves; Pietralonga,Pricila Aparecida Grasse; Faria,Ana Carolina Silva; Braga,Isis Freitas EspechitCONTEXT AND OBJECTIVE: Mycobacterium avium subsp. paratuberculosis (MAP) has attracted the interest of researchers because of similarities between paratuberculosis and Crohn's disease (CD). The aim of this study was to evaluate the frequency of MAP through cultures, histology and polymerase chain reaction (PCR) on intestinal biopsies from Brazilian CD patients. Quantitative real time PCR (qRT-PCR) was performed...
Increase in biofilm formation by Escherichia coli under conditions that mimic t...
Costa,João Carlos Miguel; Espeschit,Isis de Freitas; Pieri,Fábio Alessandro; Benjamin,Laércio Anjos; Moreira,Maria Aparecida ScatamburloBacterial biofilms are involved in the aggravation and recurrence of clinical mastitis in dairy herds. Several factors such as pH, temperature, concentration of O2 and glucose can affect their induction and growth rates. In this study, biofilm production was demonstrated by 27 Escherichia coli strains isolated from bovine mastitis at different pH values depending on the availability of glucose, mimicking condit...
Bacteriostatic effect of copaiba oil (Copaifera officinalis) against Streptococ...
Pieri,Fábio Alessandro; Mussi,Maria Carolina Martins; Fiorini,João Evangelista; Moreira,Maria Aparecida Scatamburlo; Schneedorf,José MauricioThis study evaluated the inhibitory activity of copaiba oil (Copaifera officinalis against the cariogenic microorganism, Streptococcus mutans. For such purpose, a minimum inhibition concentration test of copaiba oil against S. mutans was performed, using the serial dilution in broth technique, with a negative control, a positive control (0.12% chlorhexidine) and a 10% copaíba oil solution as a test. A minimum b...
Antimicrobial activity of autoclaved and non autoclaved copaiba oil on Listeria...
Pieri,Fábio Alessandro; José,Raphaela Mansur; Galvão,Newton Nascentes; Nero,Luis Augusto; Moreira,Maria Aparecida ScatamburloThe aim of this study was to evaluate the antimicrobial effect of different copaiba oil concentrations against the growth of Listeria monocytogenes, and analyze differences in inhibition of microorganisms with autoclaved and non autoclaved oil. This study provided an agar diffusion test with six isolates of bacteria and six different concentrations of autoclaved or non autoclaved copaiba oil and a negative cont...
Pênfigo foliáceo em um eqüino
Monteiro,Gabriel Augusto; Souza,Maria Verônica de; Conceição,Lissandro Gonçalves; Borba,Camila de Lacerda Balbi e RochaPênfigo foliáceo é uma rara afecção cutânea auto-imune que acomete várias espécies. Relata-se o caso de uma égua de quatro anos de idade, sem raça definida, apresentando áreas de alopecia, exsudação e crostas localizadas na face, região peitoral e membros pélvicos, além de prurido. Os exames laboratoriais para pesquisa de ácaros, bactérias e estruturas fúngicas foram negativos. O exame histopatológico revelou u...
Multidrug efflux systems in Gram-negative bacteria
Moreira,Maria Aparecida Scatamburlo; Souza,Edmar Chartone de; Moraes,Célia Alencar deMultidrug efflux mechanisms in bacteria contribute significantly to intrinsic and acquired resistance to antimicrobial agents. Genome analysis have confirmed the broad distribution of these systems in Gram-negative as well as in Gram-positive bacteria. Among resistance mechanisms, the multidrug efflux system or pump deserves special attention, since a cell that has acquired it can simultaneously diminish or eve...