243
Views
4
CrossRef citations to date
0
Altmetric
Article

Phenotypic and genotypic profile of the antimicrobial resistance of bacterial isolates and evaluation of physical and chemical potability indicators in groundwater in Brazil.

ORCID Icon, , , , , , , , & show all
Pages 186-201 | Received 30 Jan 2019, Accepted 02 Jul 2019, Published online: 11 Jul 2019
 

ABSTRACT

The aquatic environment has received increasing attention regarding the evolution of bacterial resistance, either as a source of resistance genes or as a matrix for the dissemination of these genes. We evaluated the physicochemical, microbiological and antimicrobial resistance characteristics of 160 samples from alternative water well solutions. According to Ordinance 2914/2011 – MS, 44 (27.5%) samples were considered unsafe if at least one physicochemical parameter exceeded permissible limits. Escherichia coli were found in 30.6% of the unregistered housing estates (UHE) and 1.9% of the local sanitary surveillance system (RW). The total of 158 bacterial strains were isolated from 13 (25%) RW and 68 (63%) UHE, 132 of which (83.5%) were obtained from UHE samples. In the investigation of resistance genes, tetA, qnrS and qnrB genes were detected in three, one and eight isolates, respectively. Our results emphasize the importance of constant surveillance and control of the quality of water supplies.

Article highlights

  • Physicochemical and microbiological characteristics of water samples were evaluated

  • The antimicrobial resistance at phenotypic and molecular levels was realized.

  • One hundred and fifty-eight bacterial strains were isolated

  • E. coli were found in 30.6% of the samples of unregistered housing estates wells

  • tetA, qnrS and qnrB resistance genes were detected

Declaration of interest

None

Supplementary material

Supplemental data for this article can be accessed here.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.