Coleformes fecais em águas de esgoto: II- transferência de marcadores e presença de plasmidial

Vicente, Ana Carolina Paulo; Dias, José Cavalcante de Albuquerque Ribeiro; Hofer, Ernesto

doi:10.1590/s0074-02761988000100004

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“…are enterobacteria frequently isolated from human biological materials. Several outbreaks of food poisoning are associated with poor sanitation conditions such as failure of hand hygiene or bad cleaning [ 4 – 6 ]. Salmonellosis, one of the most commom diseases that can be transmitted by food, is caused by the bacteria salmonella [ 7 – 9 ].…”

Section: Introductionmentioning

confidence: 99%

Bacteriological water quality in school’s drinking fountains and detection antibiotic resistance genes

Freitas

Silva

Bataus

et al. 2017

Ann Clin Microbiol Antimicrob

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The fecal coliform can contaminate water of human consumption causing problems to public health. Many of these microorganisms may contain plasmid and transfer them to other bacteria. This genetic material may confer selective advantages, among them resistance to antibiotics. The objectives of this study were to analyze the presence of fecal coliforms in water and at drinker surface, to identify the existence of plasmid, conducting studies of resistance to antibiotics, plasmid stability and capacity of bacterial conjugation. Were collected microorganisms in water of drinker surface and were used specific culture media and biochemical tests for identification of organisms, tests were performed by checking the resistance to antibiotics (ampicillin 10 μg, tetracycline 30 μg, and ciprofloxacin 5 μg), was performed extraction of plasmid DNA, plasmid stability and bacterial conjugation. Was obtained results of 31% of Salmonella spp. and 51% for other coliforms. Among the samples positive for coliforms, 27 had plasmid stable and with the ability to perform conjugation. The plasmids had similar forms, suggesting that the resistance in some bacteria may be linked to those genes extra chromosomal.

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Section: Introductionmentioning

confidence: 99%