Genetic diversity and clonal characteristics of ciprofloxacin-resistant Campylobacter jejuni isolated from Chilean patients with gastroenteritis

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dc.contributor.authorCollado, Luis
dc.contributor.authorMuñoz, Nataly
dc.contributor.authorPorte, Lorena
dc.contributor.authorOchoa, Sofía
dc.contributor.authorVarela, Carmen
dc.contributor.authorMuñoz, Ivo
dc.date.accessioned2021-08-30T19:19:20Z
dc.date.available2021-08-30T19:19:20Z
dc.date.issued2018
dc.description.abstractCampylobacter jejuni is a major cause of acute gastroenteritis worldwide. However, it has also been associated with other diseases such as bacteremia and with several post-infection sequelae. Although campylobacteriosis is usually a self-limited infection, antibiotics are indicated for severe and chronic conditions. Unfortunately, several industrialised nations have reported a substantial increase in antibiotic resistance of C. jejuni. However, there is still a lack of knowledge about the epidemiology of resistance developed by this pathogen in the developing world. For this reason, our objective was to determine the resistance of clinical C. jejuni strains to ciprofloxacin and erythromycin in Chile and their associated genotypes. Fifty C. jejuni isolates recovered from fecal samples of people with acute gastroenteritis, in central and southern Chile between 2006 and 2015, were analysed. Resistance to erythromycin and ciprofloxacin was assessed by disk diffusion and agar dilution methods. Furthermore, these strains were genotyped by Multilocus Sequence Typing (MLST). Only one of the isolates was resistant to erythromycin. However, 48% of them were resistant to ciprofloxacin. The minimal inhibitory concentration of these ciprofloxacin-resistant isolates was in the range between 4 and 32 μg/ml. Moreover, MLST analyses showed that most ciprofloxacin-resistant strains were grouped into three dominant clonal complexes (ST-21, ST-48 and ST-353), while the unique strain resistant to both antibiotics belonged to the ST-45 complex. Our results evidence a high ciprofloxacin resistance and suggest that there is a dissemination of resistant clonal lineages responsible for cases of campylobacteriosis in Chile. Further studies should elucidate the origin of these resistant genotypes.es
dc.identifier.citationInfection, Genetics and Evolution 58 (2018) 290–293es
dc.identifier.urihttps://doi.org/10.1016/j.meegid.2017.12.026es
dc.identifier.urihttp://hdl.handle.net/11447/4533
dc.language.isoenes
dc.subjectMLSTes
dc.subjectCiprofloxacin resistancees
dc.subjectSantiagoes
dc.subjectValdiviaes
dc.subjectChilees
dc.titleGenetic diversity and clonal characteristics of ciprofloxacin-resistant Campylobacter jejuni isolated from Chilean patients with gastroenteritises
dc.typeArticlees

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