Browsing by Author "Morais, Catarina"
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- ‘Believing is adapting’: Belief in a just world and emigrants’ identification and satisfaction with the host country / ‘Creer es adaptarse’: Creer en un mundo justo y la identificación y satisfacción de los emigrantes con el país de acogidaPublication . Leite, Ana C.; Cardoso, Sónia Goulart; Marques, André G.; Morais, CatarinaIn an era in which Europe is experiencing a new wave of emigration as a result of the economic crisis, it seems socially relevant to study the processes that underlie emigrants’ adjustment to their new place of living. Research has thoroughly supported the assumption that believing in a just world is an adaptive mechanism that helps people to deal with uncertainty and harsh realities in life. We propose that the endorsement of such beliefs might also contribute to a positive identification with the host country. Using a sample of Portuguese emigrants (N = 144), we demonstrate in a cross-sectional design that belief in a just world predicts a positive identification with the host country. In addition, positive levels of identification with the host country predicted higher levels of satisfaction with emigrant life. Theoretical and applied implications are discussed.
- Proposal of epidemiological cutoff values for Apramycin 15 μg and Florfenicol 30 μg Disks Applicable to Staphylococcus aureusPublication . Costa, Sofia Santos; Ferreira, Carolina; Ribeiro, Rute; Fessler, Andrea T.; Schink, Anne-Kathrin; Kadlec, Kristina; Kaspar, Heike; Amaro, Ana; Albuquerque, Teresa; Abrantes, Patricia; Morais, Catarina; Pomba, C.; Schwarz, Stefan; Couto, IsabelApramycin and florfenicol are two antimicrobial agents exclusively used in veterinary medicine. Resistance determinants to these antimicrobial agents have been described in several staphylococci, yet no inhibition zone-based epidemiological cutoff (ECOFF) values are available to detect populations harboring resistance mechanisms. In this study, we propose disk diffusion inhibition zone ECOFF values of Staphylococcus aureus for apramycin and florfenicol. The susceptibility to apramycin and florfenicol was evaluated by disk diffusion of five S. aureus collections, comprising 352 isolates of animal (n = 265) and human (n = 87) origin. The aggregated distributions of inhibition zone diameters were analyzed by the normalized resistance interpretation method to obtain normalized wild-type (WT) population distributions and corresponding ECOFF values. The putative WT populations of S. aureus were characterized by an inhibition zone ‡15 mm (ECOFF = 15 mm) for apramycin and ‡21 mm for florfenicol (ECOFF = 21 mm). Five nonwild-type (NWT) isolates were detected for apramycin, all without inhibition zone and harboring the apmA gene, whereas five NWT isolates were identified for florfenicol, all carrying the fexA gene. The proposed ECOFF values for apramycin and florfenicol may be a valuable tool in future antimicrobial resistance monitoring and surveillance studies to identify S. aureus NWT populations toward these antimicrobial agents.
- Virulence potential of biofilm-producing Staphylococcus pseudintermedius, Staphylococcus aureus and Staphylococcus coagulans causing skin infections in companion animalsPublication . Andrade, Mariana; Oliveira, Ketlyn; Morais, Catarina; Abrantes, Patrícia; Pomba, C.; Rosato, Adriana E.; Couto, Isabel; Costa, Sofia SantosABSTRACT . Coagulase-positive staphylococci (CoPS) account for most bacteria-related pyoderma in companion animals. Emergence of methicillin-resistant strains of Staphylococcus pseudintermedius (MRSP), Staphylococcus aureus (MRSA) or Staphylococcus coagulans (MRSC), often with multidrugresistant (MDR) phenotypes, is a public health concern. The study collection comprised 237 staphylococci (S. pseudintermedius (n = 155), S. aureus (n = 55) and S. coagulans (n = 27)) collected from companion animals, previously characterized regarding resistance patterns and clonal lineages. Biofilm production was detected for 51.0% (79/155), 94.6% (52/55) and 88.9% (24/27) of the S. pseudintermedius, S. aureus and S. coagulans, respectively, and was a frequent trait of the predominant S. pseudintermedius and S. aureus clonal lineages. The production of biofilm varied with NaCl supplementation of the growth media. All S. pseudintermedius and S. aureus strains carried icaADB. Kaplan–Meier survival analysis of Galleria mellonella infected with different CoPS revealed a higher virulence potential of S. aureus when compared with other CoPS. Our study highlights a high frequency of biofilm production by prevalent antimicrobial-resistant clonal lineages of CoPS associated with animal pyoderma, potentially related with a higher virulence potential and persistent or recurrent infections.