13 documents found, page 1 of 2
Identification of linezolid-resistant Enterococcus spp. in calves: findings fro...
Ribeiro, Alícia; Teixeira, Maria J.; Pinho, Luís; Campos, Carla; Novais, Carla; Peixe, Luísa; Brito, Nuno V.; Quinteira, Sandra; Miranda, CarlaBackground: Antimicrobial resistance (AMR) is a global health threat requiring a One Health approach, as antibiotic-resistant bacteria can spread between animals and humans. Enterococcus spp., particularly E. faecium (Efm) and E. faecalis (Efs), are key AMR indicators due to their role as gut commensals and their potential as reservoirs of resistance genes. They are also opportunistic pathogens that can cause s...
MicroMundo@IUCS_CESPU (2022-2024): uncovering soil’s hidden treasures and its i...
Antunes, Beatriz; Pacheco, Patrícia; Bettencourt, Simão; Quinta, Luís H.; Rodrigues, Rúben; Dinis-Oliveira, Ricardo Jorge; Miranda, CarlaBackground: MicroMundo@IUCS_CESPU (MMIC) is a service-learning pedagogical approach allowing university/school students to expand their knowledge on soil biodiversity, antimicrobial resistance (AMR) and experimental sciences [1]. School students experience a real research project by processing soil samples and looking for potential antibiotic-producing microorganisms [2,3]. Objective: To evaluate past MMIC edit...
From In to Out: assessing antimicrobial-resistant Escherichia coli across treat...
Merêncio, Tiago; Godinho, Ofélia; Lage, Olga; Quinteira, SandraBackground: Wastewater treatment plants (WWTPs) are critical points for the selection and transmission of antimicrobial resistance (AMR), which has become a major global public health concern [1,2]. The One Health approach is essential in addressing this issue, as AMR affects both human and environmental health [3]. Objective: To evaluate the role of WWTPs as reservoirs and/or sources of antimicrobial-resistant...
Exploring antimicrobial resistance in autochthonous Portuguese hens: a study of...
Jesus, Rita; Ribeiro, Virgínia; Dantas, Rui; Freitas, Ana R.; Brito, Nuno V.; Quinteira, Sandra; Miranda, CarlaBackground: The widespread use of antibiotics in intensive animal farming significantly contributes to antimicrobial resistance (AMR), posing a serious global public health threat [1]. Despite this, little is known about the role of autochthonous Portuguese laying hens as reservoirs of antibiotic-resistant Escherichia coli. Raised in extensive farming systems with reduced antibiotic exposure, these indigenous b...
Diagnostic pitfalls in Staphylococcus spp. surveillance: lessons from a multina...
Pinheiro, Bárbara; Gomes-Sampaio, Luís M.; Pacheco, Patrícia; Campos, Carla; Braz, Maria Pranto; Coelho, Cristina; Miranda, Carla; Quinteira, SandraBackground: Staphylococcus aureus is a leading cause of severe and hard-to-treat human infections, particularly when resistant to cefoxitin due to the presence of the mecA gene [1]. However, diagnostic challenges arise from the misidentification of S. aureus and related species when relying on classical identification methods (mannitol fermentation; coagulase production), as well as from the detection of strain...
Unfit for consumption: microbiological risks of natural water sources in rural ...
Rodrigues, Inês; Godinho, Ofélia; Lage, Olga; Quinteira, SandraBackground: Access to clean and safe water is vital for public health [1], especially in rural areas, where many households depend on untreated natural water sources [2]. Objective: This cross-sectional study combines an epidemiological survey with microbiological analysis to assess the risks of untreated water consumption and identify populations vulnerable to waterborne diseases. Methods: Drinking water sampl...
Dairy cattle and the iconic autochthonous cattle in northern Portugal are reser...
Quinteira, Sandra; Dantas, Rui; Pinho, Luís; Campos, Carla; Freitas, Ana R.; Brito, Nuno V.; Miranda, Carla; Campos, CarlaAnimals destined for human consumption play a key role in potentially transmitting bacteria carrying antibiotic resistance genes. However, there is limited knowledge about the carriage of antibiotic-resistant bacteria in native breeds. We aimed to characterize the phenotypic profiles and antibiotic resistance genes in Escherichia coli isolated from bovines, including three native Portuguese bovine breeds. Forty...
Colistin-resistant Escherichia coli in calves and adult cattle from Portuguese ...
Ribeiro, Madalena F.; Pinho, Luís; V. Brito, Nuno; Campos, Carla; Freitas, Ana R.; Quinteira, Sandra; Miranda, CarlaBackground: Antimicrobial resistance poses a pressing and significant challenge, driven by the intricate interplay among animals, humans, and the environment [1]. Escherichia coli, a commensal within animal and human gut microbiota, stands as one of the most ubiquitous bacteria. With a multitude of resistance genes, many E. coli strains exhibit a multidrug-resistant phenotype, diminishing the effectiveness...
Extending the reservoir of bla IMP-5: the emerging pathogen Acinetobacter berez...
Grosso, Filipa; Silva, Liliana; Sousa, C.; Ramos, Helena; Quinteira, Sandra; Peixe, LuísaAcinetobacter bereziniae clinical relevance is starting to be recognized; however, very few descriptions of its carbapenem resistance currently exist. Here we characterize two carbapenem-resistant A. bereziniae isolates. Materials & methods: Isolates were obtained from environmental and clinical samples. Carbapenemases were searched by phenotypic, biochemical and PCR assays. Clonality was studied by ApaI-PFGE a...
Tracking antibiotic resistance along the Silk Road
Mendes, Marlene; Novais, Carla; Antunes, Patrícia; Campos, Joana; Freitas, Ana Raquel; Abdukadir, Ablimit; Peixe, Luísa; Monteiro, Nuno[Abstract]