Results: 49

Distribuição regional da resistência antifúgica em cepas causadoras de candidemia no Brasil

Entre 2019 e 2022, foram analisadas 1780 cepas de Candida spp isoladas de pacientes hospitalizados em diferentes regiões do Brasil (Norte, Sul, Sudeste e Centro-Oeste), provenientes de hospitais públicos, privados e LACENs. A identificação microbiológica foi realizada por MALDI-TOF, e o perfil de se...

Geotricosis: fungemia en paciente con leucemia linfoblástica aguda

Biomédica (Bogotá); 43 (Supl. 1), 2023
La fungemia por Geotrichum spp. es poco frecuente y altamente letal. En el Instituto Nacional de Cancerología de Bogotá solo se han reportado dos casos: uno entre el 2001 y el 2007, y el otro entre el 2012 y el 2018. Este tipo de infección es más común en pacientes con algún grado de compromiso del...

Fusariosis en pacientes con cáncer: serie de 13 casos y revisión de la literatura

Biomédica (Bogotá); 43 (Supl. 1), 2023
La fusariosis es una micosis oportunista producida por Fusarium spp. Su presentación clínica depende del estado inmunológico del huésped, especialmente, el de aquellos con enfermedades hematooncológicas, cuyas manifestaciones varían desde formas localizadas hasta infección fúngica invasora. El cu...

Detection of Microorganisms in Clinical Sonicated Orthopedic Devices Using Conventional Culture and qPCR

Abstract Objective To evaluate the sensitivity and specificity of the quantitative real-time polymerase chain reaction (qPCR) for 16S rDNA gene screening using sonicated fluid from orthopedic implants. Methods A retrospective study was conducted on 73 sonicated fluids obtained from patients with infect...

Identificación directa de microorganismos a partir de hemocultivos positivos utilizando espectrometría de masas (MALDI-TOF MS)

Resumen La espectrometría de masas (MALDI-TOF MS) permite la identificación de microorganismos directamente de las colonias en pocos minutos. En este estudio se ha desarrollado y evaluado un protocolo reducido para identificar microorganismos directamente de las botellas de hemocultivos positivos en 30...

Mannheimia varigena as the etiologic agent of lameness and coronary band lesion in cattle

Rev. bras. ciênc. vet; 29 (1), 2022
Mannheimia varigena was identified as the etiologic agent of lameness and coronary band lesion in 30% of cattle in a farm located in Rio Grande do Sul, Brazil. Swab samples from the lesions were cultured in McConkey Agar and Blood Agar for microbiological identification. Culture growth was submitted to G...

Use of MALDI-TOF for identification and surveillance of gram-negative bacteria in captive wild psittacines

Braz. j. biol; 82 (), 2022
Microbiological studies of the sanitary and health status of psittacine birds that will be reintroduced is important in evaluating whether these animals act as carriers of pathogenic agents to other animals and humans. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TO...

Interações populacionais mediadas por quorum sensing na microbiota do soro-fermento utilizado na produção do queijo Canastra

Bactérias regulam a expressão de diversos fenótipos de acordo com a sua densidade populacional, em um comportamento conhecido como quorum sensing. Em micro-organismos de origem alimentar, o quorum sensing pode influenciar na formação de biofilmes, produção de toxinas e de enzimas hidrolíticas. Em...

Antimicrobial activity and partial chemical structure of acylpolyamines isolated from the venom of the spider Acanthoscurria natalensis

Background: Acylpolyamines are one of the main non-peptide compounds present in spider venom and represent a promising alternative in the search for new molecules with antimicrobial action. Methods: The venom of Acanthoscurria natalensis spider was fractionated by reverse-phase liquid chromatography (RP...

Species identification and antimicrobial susceptibility profile of bacteria associated with cow mastitis in southern Brazil

Pesqui. vet. bras; 42 (), 2022
Bovine mastitis is the most common disease in dairy cattle and responsible for economic losses in the milk industry. The present study aimed to identify the main species and to evaluate the antimicrobial susceptibility of bacterial isolates from cow herds with mastitis in dairy farms from southern Brazil...