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Occurrence and reservoirs of antibiotic resistance genes in the environment
There is clear evidence that the self-resistance genes found within antibiotic gene clusters of the producers have transferred to other non-producing bacteria, and there is increasing evidence that selection for resistant phenotypes is occurring in natural environments.
Gentamicin resistance genes in environmental bacteria: prevalence and transfer.
A high abundance and diversity of Gm(r) genes could be shown for samples from faeces (broilers, layers, cattle), from sewage, from seawater, collected close to a wastewater outflow, and from piggery manure, which indicated a habitat-specific dissemination.
Belgian surveillance plans to assess changes in Salmonella prevalence in meat at different production stages.
The Belgian plan, as utilized from 2000 to 2003, was suitable for monitoring of zoonoses because the sampling plan was representative of nationwide production processes, covered all periods of the year, and was executed by trained samplers and the analyses were carried out by recognized laboratories using an identical analytical method.
Prevalence and Molecular Characterization of Tetracycline Resistance in Enterococcus Isolates from Food
Sequencing analysis of PCR amplicons and evolutionary modeling showed that a subset of the transferable tet(M) genes belonged to four sequence homology groups (SHGs) showing an internal homology of ≥99.6%.
Distribution and in-vitro transfer of tetracycline resistance determinants in clinical and aquatic Acinetobacter strains.
- L. Guardabassi, L. Dijkshoorn, J. Collard, J. E. Olsen, A. Dalsgaard
- BiologyJournal of medical microbiology
- 1 October 2000
It is concluded that Tet A and B are widespread among tetracycline-resistant A. baumannii strains of clinical origin, but unknown genetic determinants are responsible for most tetrACYcline resistance among aquatic Acinetobacter spp.
Dissemination of an Extended-Spectrum-β-Lactamase blaTEM-52 Gene-Carrying IncI1 Plasmid in Various Salmonella enterica Serovars Isolated from Poultry and Humans in Belgium and France between 2001 and…
A conjugative IncI1 plasmid carrying blaTEM-52 on a Tn3 transposon conferring resistance to extended-spectrum cephalosporins in Salmonella enterica serovar Agona, Derby, Infantis, Paratyphi B dT+, and Typhimurium isolates from poultry and humans in Belgium and France from 2001 to 2005.
Novel Insertion Sequence- and Transposon-Mediated Genetic Rearrangements in Genomic Island SGI1 of Salmonella enterica Serovar Kentucky
- B. Doublet, K. Praud, S. Bertrand, J. Collard, F. Weill, A. Cloeckaert
- BiologyAntimicrobial Agents and Chemotherapy
- 1 August 2008
In serovar Kentucky, the SGI1 MDR region undergoes recombinational and insertional events of transposon and insertion sequences, resulting in a higher Diversity of MDR gene clusters than previously reported and consequently a higher diversity of M DR phenotypes.
Detection and characterization of tet(M) in tetracycline-resistant Listeria strains from human and food-processing origins in Belgium and France.
In the present study, three Listeria monocytogenes strains and one Listeria innocua strain out of a collection of 241 Listeria isolates from human and food-processing sources were found to display…
Stunted childhood growth is associated with decompartmentalization of the gastrointestinal tract and overgrowth of oropharyngeal taxa
- P. Vonaesch, E. Morien, P. Sansonetti
- MedicineProceedings of the National Academy of Sciences
- 20 August 2018
The data suggest that stunting is associated with a microbiome “decompartmentalization” of the gastrointestinal tract characterized by an increased presence of oropharyngeal bacteria from the stomach to the colon, hence challenging the current view of stunting arising solely as a consequence of small intestine overstimulation through recurrent infections by enteric pathogens.