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Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline

Although drinking water safety has raised considerable concern, to date, the hidden health risks in newly released overnight water from a municipal pipeline have seldom received attention. In this study, bacterial community composition and the response of antibiotic-resistant bacteria (ARB) to cipro...

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Autores principales: Zhang, Minglu, Xu, Mengyao, Xu, Shaofeng, Zhang, Lingyue, Lin, Kaizong, Zhang, Lei, Bai, Miao, Zhang, Can, Zhou, He
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143130/
https://www.ncbi.nlm.nih.gov/pubmed/32197379
http://dx.doi.org/10.3390/ijerph17061995
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author Zhang, Minglu
Xu, Mengyao
Xu, Shaofeng
Zhang, Lingyue
Lin, Kaizong
Zhang, Lei
Bai, Miao
Zhang, Can
Zhou, He
author_facet Zhang, Minglu
Xu, Mengyao
Xu, Shaofeng
Zhang, Lingyue
Lin, Kaizong
Zhang, Lei
Bai, Miao
Zhang, Can
Zhou, He
author_sort Zhang, Minglu
collection PubMed
description Although drinking water safety has raised considerable concern, to date, the hidden health risks in newly released overnight water from a municipal pipeline have seldom received attention. In this study, bacterial community composition and the response of antibiotic-resistant bacteria (ARB) to ciprofloxacin, azithromycin, tetracycline, penicillin, and cephalosporin in overnight stagnant water were analyzed. With increases in heterotrophic bacteria plate count (HPC) during water stagnation, the numbers of ARB and the ARB/HPC ratios for the five antibiotics in resident water were observed to increase, which illustrated that the prevalence of ARB rose in the pipe network water during stagnation time (ST). Furthermore, during water stagnation for 12 h, an increase in bacteria related to fermentation was also observed. When the ST rose to 48 h, the fermentation bacteria become non-significant, and this was related to the exchange of pipe network water during daytime stagnation within the 48-h period. The antibiotic resistance index (ARI) showed that tetracycline had the highest resistance level in fresh water, and then decreased during water stagnation. When ST increased to 12 h, all ARI values of the five antibiotics were low, which was associated with changes in parameters during water retention and reduced resistance during short-term stagnation. When the ST increased to 24 and 48 h, the resistance to most antibiotics (except for tetracycline) increased, which showed that increasing antibiotic resistance is caused by the formation of biofilms in the pipeline during water stagnation.
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spelling pubmed-71431302020-04-14 Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline Zhang, Minglu Xu, Mengyao Xu, Shaofeng Zhang, Lingyue Lin, Kaizong Zhang, Lei Bai, Miao Zhang, Can Zhou, He Int J Environ Res Public Health Article Although drinking water safety has raised considerable concern, to date, the hidden health risks in newly released overnight water from a municipal pipeline have seldom received attention. In this study, bacterial community composition and the response of antibiotic-resistant bacteria (ARB) to ciprofloxacin, azithromycin, tetracycline, penicillin, and cephalosporin in overnight stagnant water were analyzed. With increases in heterotrophic bacteria plate count (HPC) during water stagnation, the numbers of ARB and the ARB/HPC ratios for the five antibiotics in resident water were observed to increase, which illustrated that the prevalence of ARB rose in the pipe network water during stagnation time (ST). Furthermore, during water stagnation for 12 h, an increase in bacteria related to fermentation was also observed. When the ST rose to 48 h, the fermentation bacteria become non-significant, and this was related to the exchange of pipe network water during daytime stagnation within the 48-h period. The antibiotic resistance index (ARI) showed that tetracycline had the highest resistance level in fresh water, and then decreased during water stagnation. When ST increased to 12 h, all ARI values of the five antibiotics were low, which was associated with changes in parameters during water retention and reduced resistance during short-term stagnation. When the ST increased to 24 and 48 h, the resistance to most antibiotics (except for tetracycline) increased, which showed that increasing antibiotic resistance is caused by the formation of biofilms in the pipeline during water stagnation. MDPI 2020-03-18 2020-03 /pmc/articles/PMC7143130/ /pubmed/32197379 http://dx.doi.org/10.3390/ijerph17061995 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Minglu
Xu, Mengyao
Xu, Shaofeng
Zhang, Lingyue
Lin, Kaizong
Zhang, Lei
Bai, Miao
Zhang, Can
Zhou, He
Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline
title Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline
title_full Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline
title_fullStr Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline
title_full_unstemmed Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline
title_short Response of the Bacterial Community and Antibiotic Resistance in Overnight Stagnant Water from a Municipal Pipeline
title_sort response of the bacterial community and antibiotic resistance in overnight stagnant water from a municipal pipeline
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143130/
https://www.ncbi.nlm.nih.gov/pubmed/32197379
http://dx.doi.org/10.3390/ijerph17061995
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