Fate of antibiotic resistance genes (ARGs) in wastewater treatment plant : Preliminary study on identification before and after ultrasonication

Jannatul Rumky; Antonina Kruglova; Eveliina Repo

doi:10.1016/j.envres.2022.114281

Fate of antibiotic resistance genes (ARGs) in wastewater treatment plant : Preliminary study on identification before and after ultrasonication

Jannatul Rumky^*
, Antonina Kruglova
, Eveliina Repo

^*Corresponding author for this work

LUT University

Research output: Contribution to journal › Article › Scientific › peer-review

13 Citations (Scopus)

219 Downloads (Pure)

Abstract

This study collected sludge samples from four different sections of a local wastewater treatment plant in Mikkeli, Finland, for antibiotic resistance genes (ARGs) analysis. Here, we examine the seven representative ARGs in sludge, encoding erythromycin (ermB), tetracycline (tetA, tetC, tetQ, tetW) and sulphonamide (sul1) to check abundance before and after ultrasonication. The class 1 integron (intl1) was also observed as an indicator of antibiotic resistance and horizontal gene transmission. The pre-treatment condition included 10 min of ultrasonication (US) for the sludge sample before freeze-drying. The droplet digital PCR system was used to assess the ARGs from the samples, and it was found that ARGs were not effectively eliminated by pre-treatment. After ultrasonication, tetA, tetC and tetQ did not show any variation but tetW showed 20 copies/ng of lower abundance in digested sludge than raw sludge, and a similar abundance was found in dewatered sludge. For MBR sludge, only ermB showed 1000 copies/ng higher abundance compared to the raw sample and surprisingly it did not show the presence of any other types of ARG. This study provides an overview of the appearance of ARGs in regional municipal sludge for further research reflection.

Original language	English
Article number	114281
Number of pages	6
Journal	Environmental Research
Volume	215
DOIs	https://doi.org/10.1016/j.envres.2022.114281
Publication status	Published - Dec 2022
MoE publication type	A1 Journal article-refereed

Funding

The authors acknowledge the funding from the European Regional Development Fund and wish to thank the Finnish Foundation of Technology for providing an encouragement grant based on this research work. We would also like to thank the Institute of Biotechnology at the University of Helsinki for the ARG analysis. The authors acknowledge the funding from the European Regional Development Fund and wish to thank the Finnish Foundation of Technology for providing an encouragement grant based on this research work. We would also like to thank the Institute of Biotechnology at the University of Helsinki for the ARG analysis.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation
SDG 11 Sustainable Cities and Communities

Keywords

Antibiotic resistance genes
Erythromycin
Sludge treatment
Sulfonamide
Tetracycline
Ultrasonication

Access to Document

10.1016/j.envres.2022.114281Licence: CC BY

1-s2.0-S0013935122016085-mainFinal published version, 925 KBLicence: CC BY

Cite this

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title = "Fate of antibiotic resistance genes (ARGs) in wastewater treatment plant : Preliminary study on identification before and after ultrasonication",

abstract = "This study collected sludge samples from four different sections of a local wastewater treatment plant in Mikkeli, Finland, for antibiotic resistance genes (ARGs) analysis. Here, we examine the seven representative ARGs in sludge, encoding erythromycin (ermB), tetracycline (tetA, tetC, tetQ, tetW) and sulphonamide (sul1) to check abundance before and after ultrasonication. The class 1 integron (intl1) was also observed as an indicator of antibiotic resistance and horizontal gene transmission. The pre-treatment condition included 10 min of ultrasonication (US) for the sludge sample before freeze-drying. The droplet digital PCR system was used to assess the ARGs from the samples, and it was found that ARGs were not effectively eliminated by pre-treatment. After ultrasonication, tetA, tetC and tetQ did not show any variation but tetW showed 20 copies/ng of lower abundance in digested sludge than raw sludge, and a similar abundance was found in dewatered sludge. For MBR sludge, only ermB showed 1000 copies/ng higher abundance compared to the raw sample and surprisingly it did not show the presence of any other types of ARG. This study provides an overview of the appearance of ARGs in regional municipal sludge for further research reflection.",

keywords = "Antibiotic resistance genes, Erythromycin, Sludge treatment, Sulfonamide, Tetracycline, Ultrasonication",

author = "Jannatul Rumky and Antonina Kruglova and Eveliina Repo",

note = "Funding Information: The authors acknowledge the funding from the European Regional Development Fund and wish to thank the Finnish Foundation of Technology for providing an encouragement grant based on this research work. We would also like to thank the Institute of Biotechnology at the University of Helsinki for the ARG analysis. Funding Information: The authors acknowledge the funding from the European Regional Development Fund and wish to thank the Finnish Foundation of Technology for providing an encouragement grant based on this research work. We would also like to thank the Institute of Biotechnology at the University of Helsinki for the ARG analysis. Publisher Copyright: {\textcopyright} 2022",

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AU - Rumky, Jannatul

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N1 - Funding Information: The authors acknowledge the funding from the European Regional Development Fund and wish to thank the Finnish Foundation of Technology for providing an encouragement grant based on this research work. We would also like to thank the Institute of Biotechnology at the University of Helsinki for the ARG analysis. Funding Information: The authors acknowledge the funding from the European Regional Development Fund and wish to thank the Finnish Foundation of Technology for providing an encouragement grant based on this research work. We would also like to thank the Institute of Biotechnology at the University of Helsinki for the ARG analysis. Publisher Copyright: © 2022

PY - 2022/12

Y1 - 2022/12

N2 - This study collected sludge samples from four different sections of a local wastewater treatment plant in Mikkeli, Finland, for antibiotic resistance genes (ARGs) analysis. Here, we examine the seven representative ARGs in sludge, encoding erythromycin (ermB), tetracycline (tetA, tetC, tetQ, tetW) and sulphonamide (sul1) to check abundance before and after ultrasonication. The class 1 integron (intl1) was also observed as an indicator of antibiotic resistance and horizontal gene transmission. The pre-treatment condition included 10 min of ultrasonication (US) for the sludge sample before freeze-drying. The droplet digital PCR system was used to assess the ARGs from the samples, and it was found that ARGs were not effectively eliminated by pre-treatment. After ultrasonication, tetA, tetC and tetQ did not show any variation but tetW showed 20 copies/ng of lower abundance in digested sludge than raw sludge, and a similar abundance was found in dewatered sludge. For MBR sludge, only ermB showed 1000 copies/ng higher abundance compared to the raw sample and surprisingly it did not show the presence of any other types of ARG. This study provides an overview of the appearance of ARGs in regional municipal sludge for further research reflection.

AB - This study collected sludge samples from four different sections of a local wastewater treatment plant in Mikkeli, Finland, for antibiotic resistance genes (ARGs) analysis. Here, we examine the seven representative ARGs in sludge, encoding erythromycin (ermB), tetracycline (tetA, tetC, tetQ, tetW) and sulphonamide (sul1) to check abundance before and after ultrasonication. The class 1 integron (intl1) was also observed as an indicator of antibiotic resistance and horizontal gene transmission. The pre-treatment condition included 10 min of ultrasonication (US) for the sludge sample before freeze-drying. The droplet digital PCR system was used to assess the ARGs from the samples, and it was found that ARGs were not effectively eliminated by pre-treatment. After ultrasonication, tetA, tetC and tetQ did not show any variation but tetW showed 20 copies/ng of lower abundance in digested sludge than raw sludge, and a similar abundance was found in dewatered sludge. For MBR sludge, only ermB showed 1000 copies/ng higher abundance compared to the raw sample and surprisingly it did not show the presence of any other types of ARG. This study provides an overview of the appearance of ARGs in regional municipal sludge for further research reflection.

KW - Antibiotic resistance genes

KW - Erythromycin

KW - Sludge treatment

KW - Sulfonamide

KW - Tetracycline

KW - Ultrasonication

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Fate of antibiotic resistance genes (ARGs) in wastewater treatment plant : Preliminary study on identification before and after ultrasonication

Abstract

Funding

UN SDGs

Keywords

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