A5085036022- Salmonella and Campylobacter epidemiology
- Vibrio bacteria research studies
- Escherichia coli research studies
- Antibiotic Resistance in Bacteria
- Clostridium difficile and Clostridium perfringens research
- Bacterial biofilms and quorum sensing
- Identification and Quantification in Food
- Protist diversity and phylogeny
- Corrosion Behavior and Inhibition
- Aquaculture disease management and microbiota
- Water Quality Monitoring and Analysis
- Drug Transport and Resistance Mechanisms
- Bacterial Genetics and Biotechnology
- Advanced Sensor Technologies Research
- Algal biology and biofuel production
- Enterobacteriaceae and Cronobacter Research
- RNA and protein synthesis mechanisms
- Diatoms and Algae Research
- Bacteriophages and microbial interactions
- Probiotics and Fermented Foods
- Scientific Measurement and Uncertainty Evaluation
University of Beira Interior
2021-2025
University of Aveiro
2010-2014
Fish larvae in aquaculture have high mortality rates due to pathogenic bacteria, especially the Vibrio species, and ineffective prophylactic strategies. Vaccination is not feasible antibiotics reduced efficacy against multidrug resistant bacteria. A novel approach controlling infections needed. The potential of phage therapy combat vibriosis fish production has yet been examined. We describe isolation characterization two bacteriophages capable infecting their application prevent bacterial...
Aliarcobacter butzleri is an emergent enteropathogen that can be found in a range of environments. This bacterium presents vast repertoire efflux pumps, such as the ones belonging to resistance nodulation cell division family, which may associated with bacterial resistance, well virulence. Thus, this work aimed evaluate contribution three RND systems, AreABC, AreDEF and AreGHI, virulence A. butzleri. Mutant strains were constructed by inactivation gene encodes inner membrane protein these...
Aliarcobacter butzleri is an emergent enteropathogen, showing high genetic diversity, which likely contributes to its adaptive capacity different environments. Whether natural transformation can be a mechanism that generates diversity in A. still unknown. In the present study, we aimed establish if naturally competent for and investigate factors influencing this process. Two procedures were tested using exogenous isogenic DNA containing antibiotic resistance markers, external conditions...
Aliarcobacter butzleri is a Gram-negative bacterium associated with infections of the gastrointestinal tract and widely distributed in various environments. For successful infection, A. should be able to tolerate stresses during passage, such as bile. Bile represents an antimicrobial host barrier that acts against external noxious agents consists variety bile salts. The intestinal salts act detergents involved defense; although, on bacterial side, they could also serve signal activate...
Aliarcobacter butzleri is an emergent enteropathogen for which resistance to several classes of antimicrobial agents has been described, although the underlying mechanisms have poorly addressed. We aimed evaluate contribution resistance-nodulation-division-type (RND) efflux system, AreABC, drug in A. butzleri. strains were first tested against antimicrobials with and without pump inhibitor. Then, erythromycin-resistant screened presence a premature stop codon putative transcriptional...
Aliarcobacter butzleri is considered a ubiquitous microorganism and emergent pathogen, for which increasing rates of multidrug resistance have been described. In line with this, the present work aimed to evaluate first time contribution an ABC efflux system, YbhFSR, in virulence this bacterium. Following silico characterization YbhFSR transporter, mutant strain was constructed by inactivating gene responsible ATP-binding. After ensuring that mutation did not impact on bacterial growth,...
Arcobacter butzleri is an emergent gram-negative enteropathogenic bacterium widespread in different environments and hosts. During the colonization of gastrointestinal tract, bacteria face a variety environmental conditions to successfully establish infection new host. One these challenges fluctuation oxygen concentrations encountered not only throughout host tract defences but also food industry. Oxygen fluctuations can lead modulations virulence possibly increase its pathogenic potential....
The genus Aliarcobacter belongs to the Arcobacteraceae family, which has nine validly published species. Among them, species butzleri is considered fourth most frequently found Campylobacter-like microorganism in human diarrheal stool samples and also been included list of microorganisms a serious risk health by International Commission on Microbiological Specifications for Food. Increasing rates multidrug resistance different antimicrobials have described A. isolates, with efflux pumps...