Publications by authors named "Marisa Ribeiro-Almeida"

Recurrent urinary tract infections (UTIs) pose a significant clinical challenge in both human and veterinary medicine, due to antibiotic-resistant and biofilm-forming bacteria. We hypothesized that high glucose levels in diabetic animals enhance biofilm formation and reduce antibiotic efficacy, promoting infection persistence. This study analyzed from a diabetic female Labrador Retriever with recurrent UTIs over 18 months, focusing on antimicrobial resistance, biofilm-forming capacity, and genomic characterization.

View Article and Find Full Text PDF

Colistin, a last-resort antibiotic in human medicine, has been banned in European food animal production to mitigate antimicrobial resistance. This study investigates the long-term effects of the colistin ban on the occurrence and genomic features (WGS) of colistin-resistant, mcr-carrying Escherichia coli across intensive rabbit farms (8 farms, ~600 animals/farm, fecal and farm environmental samples) in the north and center of Portugal. Colistin-resistant E.

View Article and Find Full Text PDF

The rise of antibiotic resistance in the food chain is influenced by the use of antimicrobial agents, such as antibiotics, metals, and biocides, throughout the entire farm-to-fork continuum. Besides, non-clinical reservoirs potentially contribute to the transmission of critical pathogens such as multidrug-resistant (MDR) . However, limited knowledge exists about the population structure and genomic diversity of circulating in conventional poultry production.

View Article and Find Full Text PDF
Article Synopsis
  • The pet industry, particularly raw meat-based diets (RMBDs), is growing globally, raising concerns about their safety and potential to spread antibiotic-resistant bacteria or zoonotic pathogens.
  • A study analyzed 55 samples from various dog food brands in Portugal and found that all contaminated samples came from RMBDs, with many containing multiple drug-resistant strains, including those similar to clinical isolates found in humans.
  • Results indicate that some RMBDs available in Portugal can carry antibiotic resistance genes, particularly to colistin, suggesting a need for regulatory and industry actions to mitigate health risks associated with pet food.
View Article and Find Full Text PDF

poses a threat to both human and animal health. This work describes an outbreak in a Portuguese rabbit farm, detailing the isolates' clinical manifestations, necropsy findings, and phenotypic and genomic profiles. Clinical signs, exclusively observed in does, included lethargy and reproductive signs.

View Article and Find Full Text PDF

Gulls act as intermediaries in the exchange of microorganisms between the environment and human settlements, including spp. This study assessed the antimicrobial resistance and molecular profiles of spp. isolates obtained from fecal samples of gulls in the city of Porto, Portugal, in 2008 and 2023 and from water samples in 2023.

View Article and Find Full Text PDF

Concerns about colistin-resistant bacteria in animal food-environmental-human ecosystems prompted the poultry sector to implement colistin restrictions and explore alternative trace metals/copper feed supplementation. The impact of these strategies on the selection and persistence of colistin-resistant Klebsiella pneumoniae in the whole poultry production chain needs clarification. We assessed colistin-resistant and copper-tolerant K.

View Article and Find Full Text PDF

Because of public health concerns, much greater scrutiny is now placed on antibiotic use in pets, especially for antimicrobial agents that have human analogs. Therefore, this study aimed to characterize the phenotypic and genotypic profiles of multidrug-resistant bacteria isolated from nasal swabs samples taken from a one-year-old male Serra da Estrela dog with rhinorrhea that was treated with amikacin. An extended-spectrum β-lactamases (ESBL) was isolated in the first sample taken from the left nasal cavity of the dog.

View Article and Find Full Text PDF

The expansion of mcr-carrying bacteria is a well-recognized public health problem. Measures to contain mcr spread have mainly been focused on the food-animal production sector. Nevertheless, the spread of MCR producers at the environmental interface particularly driven by the increasing population of gulls in coastal cities has been less explored.

View Article and Find Full Text PDF