Journal of global antimicrobial resistance · 2019
Various Inc-type plasmids and lineages of Escherichia coli and Klebsiella pneumoniae spreading blaCTX-M-15,blaCTX-M-1 and mcr-1 genes in camels in Tunisia.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Saidani Mariem, Messadi Lilia, Mefteh Jomâa, Chaouechi Amira, Soudani Alya, Selmi Rachid, Dâaloul-Jedidi Monia, Ben Chehida Faten, Mamlouk Aymen, Jemli Mohamed Habib, Madec Jean-Yves, Haenni Marisa
Аннотация
OBJECTIVES: Resistance to extended-spectrum cephalosporins, fluoroquinolones and colistin is under constant scrutiny in food-producing animals worldwide. However, little is known about camels, which provide milk and meat for human consumption, and are attractions for tourists to ride in arid regions. This study assessed the role of camels as potential reservoirs of these resistance determinants.
METHODS: Faecal swabs were collected from 232 camels in Tunisia between April 2016 and July 2018. Enterobacteriaceae were detected on MacConkey agar and extended-spectrum β-lactamase (ESBL)-producers on the same medium supplemented with cefotaxime. Antimicrobial resistance was assessed by disc diffusion, and ESBL-producing isolates were further characterised by phylogrouping (for Escherichia coli, E. coli) and multilocus sequence typing. Genetic support of the blaESBL and mcr-1 genes was identified by plasmid-typing and Southern blot.
RESULTS: E. coli were identified in 163 of 232 (70.3%) and Klebsiella pneumoniae (K. pneumoniae) in 16 of 232 (6.9%) of the dominant flora. Three E. coli and one K. pneumoniae (1.3% and 0.4%, respectively) were found on cefotaxime-enriched media. One K. pneumoniae and one E. coli from a tourist farm harboured the blaCTX-M-15 gene on an IncY plasmid, while the two E. coli from the butchery sector displayed the blaCTX-M-15 gene on an IncI1 plasmid and colocalisation of the blaCTX-M-1 and mcr-1 genes on an IncHI2 plasmid.
CONCLUSIONS: This study reported ESBL-producing Enterobacteriaceae in Tunisian camels from both tourist and meat-producing sectors. This was the first description of the mcr-1 gene in a meat-producing camel. Although not alarming, this context needs specific attention to avoid camels becoming a bigger reservoir for multidrug-resistant Enterobacteriaceae.
METHODS: Faecal swabs were collected from 232 camels in Tunisia between April 2016 and July 2018. Enterobacteriaceae were detected on MacConkey agar and extended-spectrum β-lactamase (ESBL)-producers on the same medium supplemented with cefotaxime. Antimicrobial resistance was assessed by disc diffusion, and ESBL-producing isolates were further characterised by phylogrouping (for Escherichia coli, E. coli) and multilocus sequence typing. Genetic support of the blaESBL and mcr-1 genes was identified by plasmid-typing and Southern blot.
RESULTS: E. coli were identified in 163 of 232 (70.3%) and Klebsiella pneumoniae (K. pneumoniae) in 16 of 232 (6.9%) of the dominant flora. Three E. coli and one K. pneumoniae (1.3% and 0.4%, respectively) were found on cefotaxime-enriched media. One K. pneumoniae and one E. coli from a tourist farm harboured the blaCTX-M-15 gene on an IncY plasmid, while the two E. coli from the butchery sector displayed the blaCTX-M-15 gene on an IncI1 plasmid and colocalisation of the blaCTX-M-1 and mcr-1 genes on an IncHI2 plasmid.
CONCLUSIONS: This study reported ESBL-producing Enterobacteriaceae in Tunisian camels from both tourist and meat-producing sectors. This was the first description of the mcr-1 gene in a meat-producing camel. Although not alarming, this context needs specific attention to avoid camels becoming a bigger reservoir for multidrug-resistant Enterobacteriaceae.