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Freeling F, Armbruster D, Nödler K, Kunkel U, Scheurer M, Koschorreck J, Ternes TA. Metabolites are overlooked in environmental risk assessments and monitoring of pharmaceuticals: The case study of pantoprazole. WATER RESEARCH 2024; 256:121596. [PMID: 38685172 DOI: 10.1016/j.watres.2024.121596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/27/2024] [Accepted: 04/08/2024] [Indexed: 05/02/2024]
Abstract
The proton-pump inhibitor pantoprazole (PPZ) is one of the most consumed pharmaceuticals worldwide. Despite its high usage, reported PPZ concentrations in environmental water samples are comparatively low, which can be explained by the extensive metabolism of PPZ in the human body. Since most previous studies did not consider human PPZ metabolites it can be assumed that the current environmental exposure associated with the application of PPZ is substantially underestimated. In our study, 4'-O-demethyl-PPZ sulfide (M1) was identified as the predominant PPZ metabolite by analyzing urine of a PPZ consumer as well as the influent and effluent of a wastewater treatment plant (WWTP) using liquid chromatography coupled to high resolution mass spectrometry (LC-HRMS). M1 was found to be ubiquitously present in WWTP effluents (max. concentration: 3 000 ng/L) and surface waters in Germany. On average, the surface water concentrations of M1 were approximately 30 times higher than those of the parent compound PPZ. Laboratory scale experiments demonstrated that activated carbon can considerably adsorb M1 und thus improve its removal during wastewater and drinking water treatment. Laboratory ozonation experiments showed a fast oxidation of M1, accompanied by the formation of several ozonation products. Certain ozonation products (identities confirmed via synthesized reference standards) were also detected in water samples collected after ozonation in a full-scale WWTP. Overall lower signal intensities were observed in the effluents of a sand filter and biologically active granular activated carbon filter, suggesting that the compounds were significantly removed during these post-ozonation treatment stages.
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Affiliation(s)
- Finnian Freeling
- TZW: DVGW-Technologiezentrum Wasser (German Water Centre), Karlsruher Str. 84, Karlsruhe 76139, Germany
| | - Dominic Armbruster
- TZW: DVGW-Technologiezentrum Wasser (German Water Centre), Karlsruher Str. 84, Karlsruhe 76139, Germany
| | - Karsten Nödler
- TZW: DVGW-Technologiezentrum Wasser (German Water Centre), Karlsruher Str. 84, Karlsruhe 76139, Germany
| | - Uwe Kunkel
- Bavarian Environment Agency (LfU), Bürgermeister-Ulrich-Straße 160, 86179, Germany
| | - Marco Scheurer
- TZW: DVGW-Technologiezentrum Wasser (German Water Centre), Karlsruher Str. 84, Karlsruhe 76139, Germany; Landesanstalt für Umwelt Baden-Württemberg (LUBW), Griesbachstr.1-3, Karlsruhe 76185, Germany
| | - Jan Koschorreck
- German Environment Agency, Bismarckplatz 1, Berlin 14193, Germany
| | - Thomas A Ternes
- Federal Institute of Hydrology (BfG), Am Mainzer Tor 1, Koblenz 56068, Germany.
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2
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Mutunga T, Sinanovic S, Harrison CS. Integrating Wireless Remote Sensing and Sensors for Monitoring Pesticide Pollution in Surface and Groundwater. SENSORS (BASEL, SWITZERLAND) 2024; 24:3191. [PMID: 38794044 PMCID: PMC11125874 DOI: 10.3390/s24103191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/07/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024]
Abstract
Water constitutes an indispensable resource crucial for the sustenance of humanity, as it plays an integral role in various sectors such as agriculture, industrial processes, and domestic consumption. Even though water covers 71% of the global land surface, governments have been grappling with the challenge of ensuring the provision of safe water for domestic use. A contributing factor to this situation is the persistent contamination of available water sources rendering them unfit for human consumption. A common contaminant, pesticides are not frequently tested for despite their serious effects on biodiversity. Pesticide determination in water quality assessment is a challenging task because the procedures involved in the extraction and detection are complex. This reduces their popularity in many monitoring campaigns despite their harmful effects. If the existing methods of pesticide analysis are adapted by leveraging new technologies, then information concerning their presence in water ecosystems can be exposed. Furthermore, beyond the advantages conferred by the integration of wireless sensor networks (WSNs), the Internet of Things (IoT), Machine Learning (ML), and big data analytics, a notable outcome is the attainment of a heightened degree of granularity in the information of water ecosystems. This paper discusses methods of pesticide detection in water, emphasizing the possible use of electrochemical sensors, biosensors, and paper-based sensors in wireless sensing. It also explores the application of WSNs in water, the IoT, computing models, ML, and big data analytics, and their potential for integration as technologies useful for pesticide monitoring in water.
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Affiliation(s)
- Titus Mutunga
- School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow G4 0BA, Scotland, UK; (S.S.); (C.S.H.)
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3
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Reuschenbach M, Drees F, Leupold MS, Tintrop LK, Schmidt TC, Renner G. qPeaks: A Linear Regression-Based Asymmetric Peak Model for Parameter-Free Automatized Detection and Characterization of Chromatographic Peaks in Non-Target Screening Data. Anal Chem 2024; 96:7120-7129. [PMID: 38666514 DOI: 10.1021/acs.analchem.4c00494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
We present qPeaks (quality peaks), a novel, user-parameter-free algorithm for peak detection and peak characterization applicable to chromatographic data. The algorithm is based on a linearizable regression model that analyzes asymmetric peaks and estimates the specific uncertainties associated with the peak regression parameters. The uncertainties of the parameters are used to derive a data quality score DQSpeak, rendering low reliability results more transparent during processing and allowing for the prioritization of generated features. High DQSpeak chromatographic peaks have a lower chance of being classified as false-positive and show higher repeatability over multiple measurements. The high efficiency of the algorithm makes it particularly useful for application within processing routines of nontarget screening through chromatography coupled with high-resolution mass spectrometry. qPeaks is integrated into the qAlgorithms nontarget screening processing toolbox and appends a parameter-free chromatographic peak detection and characterization step to it. With qAlgorithms, now high-resolution mass spectra are centroided using the qCentroids algorithms, centroids are clustered to form extracted ion chromatograms (EICs) with the qBinning algorithm, and chromatographic peaks are found on the generated EICs with qPeaks. However, all tools from qAlgorithms can also be used independently.
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Affiliation(s)
- Max Reuschenbach
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr.5, Essen 45141, Germany
- Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr.2, Essen 45141, Germany
| | - Felix Drees
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr.5, Essen 45141, Germany
- Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr.2, Essen 45141, Germany
| | - Michael S Leupold
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr.5, Essen 45141, Germany
- Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr.2, Essen 45141, Germany
| | - Lucie K Tintrop
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr.5, Essen 45141, Germany
- Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr.2, Essen 45141, Germany
| | - Torsten C Schmidt
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr.5, Essen 45141, Germany
- Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr.2, Essen 45141, Germany
- IWW Water Center, Moritzstr.26, Mülheim an der Ruhr 45476, Germany
| | - Gerrit Renner
- Instrumental Analytical Chemistry, University of Duisburg-Essen, Universitätsstr.5, Essen 45141, Germany
- Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstr.2, Essen 45141, Germany
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4
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Keltsch NG, Pütz E, Dietrich C, Wick A, Tremel W, Ternes TA. Bromination of Quorum Sensing Molecules: Vanadium Bromoperoxidase and Cerium Dioxide Nanocrystals via Free Active Bromine Transform Bacterial Communication. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:18491-18498. [PMID: 37222552 DOI: 10.1021/acs.est.3c00459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The halogenation of quorum sensing molecules (QSMs) is known to be catalyzed by enzymes such as haloperoxidase (HPO) as well as cerium dioxide nanocrystals (NC), which mimic enzymes. Those enzymes and mimics can influence biological processes such as biofilm formation, where bacteria use QSMs for the "chemical" communication between each other and the coordination of surface colonization. However, not much is known about the degradation behavior of a broad spectrum of QSMs, especially for HPO and its mimics. Therefore, in this study, the degradation of three QSMs with different molecule moieties was elucidated. For this purpose, different batch experiments were carried out with HPOs, NCs and free active bromine (FAB). For N-β-ketocaproyl-homoserine lactone (3-Oxo-C6-AHL), N-cis-tetradec-9Z-enoyl-homoserine lactone (C14:1-AHL) and 2-heptyl-4-quinolone (HHQ) a fast degradation and moiety-specific transformations were observed. The HPO vanadium bromoperoxidase as well as cerium dioxide NCs catalyzed the formation of the same brominated transformation products (TPs). Since the same TPs are formed in batch experiments with FAB it is very likely that FAB is playing a major role in the catalytical reaction mechanism leading to the transformation of QSMs. In this study in total 17 TPs could be identified in different levels of confidence and the catalytic degradation processes for two QS groups (unsaturated AHLs and alkyl quinolones) with cerium dioxide NCs and vanadium bromoperoxidase were expanded.
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Affiliation(s)
- N G Keltsch
- Bundesanstalt für Gewässerkunde, Am Mainzer Tor 1, 56068 Koblenz, Germany
- Universität Koblenz-Landau, Universitätsstraße 1, 56070 Koblenz, Germany
| | - E Pütz
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | - C Dietrich
- Bundesanstalt für Gewässerkunde, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - A Wick
- Bundesanstalt für Gewässerkunde, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - W Tremel
- Institut für Anorganische Chemie und Analytische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
| | - T A Ternes
- Bundesanstalt für Gewässerkunde, Am Mainzer Tor 1, 56068 Koblenz, Germany
- Universität Koblenz-Landau, Universitätsstraße 1, 56070 Koblenz, Germany
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5
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Simon F, Gehrenkemper L, Becher S, Dierkes G, Langhammer N, Cossmer A, von der Au M, Göckener B, Fliedner A, Rüdel H, Koschorreck J, Meermann B. Quantification and characterization of PFASs in suspended particulate matter (SPM) of German rivers using EOF, dTOPA, (non-)target HRMS. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 885:163753. [PMID: 37121317 DOI: 10.1016/j.scitotenv.2023.163753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 04/20/2023] [Accepted: 04/22/2023] [Indexed: 05/12/2023]
Abstract
In this study, we compare analytical methods for PFAS determination-target analysis, non-target screening (NTS), direct total oxidizable precursor assay (dTOPA) and extractable organically bound fluorine (EOF). Therefore, suspended particulate matter (SPM) samples from German rivers at different locations in time series from 2005 to 2020 were analyzed to investigate temporal and spatially resolved trends. In this study 3 PFAS mass balances approaches were utilized: (i) PFAA target vs. PFAS dTOPA, (ii) PFAS target vs. EOF and (iii) PFAS target vs. PFAS dTOPA vs. organofluorines NTS vs. EOF. Mass balance approach (i) revealed high proportions of precursor substances in SPM samples. For the time resolved analysis an increase from 94% (2005) to 97% in 2019 was observable. Also for the spatial resolved analysis precursor proportions were high with >84% at all sampling sites. Mass balance approach (ii) showed that the unidentified EOF (uEOF) fraction increased over time from 82% (2005) to 99% (2019). Furthermore, along the river courses the uEOF increased. In the combined mass balance approach (iii) using 4 different analytical approaches EOF fractions were further unraveled. The EOF pattern was fully explainable at the sampling sites at Saar and Elbe rivers. For the time resolved analysis, an increased proportion of the EOF was now explainable. However, still 27% of the EOF for the time resolved analysis and 25% of the EOF for the spatial resolved analysis remained unknown. Therefore, in a complementary approach, both the EOF and dTOPA reveal unknown gaps in the PFAS mass balance and are valuable contributions to PFAS risk assessment. Further research is needed to identify organofluorines summarized in the EOF parameter.
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Affiliation(s)
- Fabian Simon
- Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis, 12489 Berlin, Germany
| | - Lennart Gehrenkemper
- Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis, 12489 Berlin, Germany
| | - Susanne Becher
- Federal Institute of Hydrology (BfG), Department G2 - Aquatic Chemistry, 56068 Koblenz, Germany
| | - Georg Dierkes
- Federal Institute of Hydrology (BfG), Department G2 - Aquatic Chemistry, 56068 Koblenz, Germany
| | - Nicole Langhammer
- Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis, 12489 Berlin, Germany
| | - Antje Cossmer
- Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis, 12489 Berlin, Germany
| | - Marcus von der Au
- Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis, 12489 Berlin, Germany
| | - Bernd Göckener
- Fraunhofer Institute for Molecular Biology and Applied Ecology (Fraunhofer IME), 57392 Schmallenberg, Germany
| | - Annette Fliedner
- Fraunhofer Institute for Molecular Biology and Applied Ecology (Fraunhofer IME), 57392 Schmallenberg, Germany
| | - Heinz Rüdel
- Fraunhofer Institute for Molecular Biology and Applied Ecology (Fraunhofer IME), 57392 Schmallenberg, Germany
| | - Jan Koschorreck
- German Environment Agency (UBA), 06813 Dessau-Rosslau, Germany
| | - Björn Meermann
- Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis, 12489 Berlin, Germany.
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6
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Köppe T, Jewell KS, Ehlig B, Wick A, Koschorreck J, Ternes TA. Identification and trend analysis of organic cationic contaminants via non-target screening in suspended particulate matter of the German rivers Rhine and Saar. WATER RESEARCH 2023; 229:119304. [PMID: 36459896 DOI: 10.1016/j.watres.2022.119304] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/14/2022] [Accepted: 10/26/2022] [Indexed: 06/17/2023]
Abstract
Non-target screening of suspended particulate matter (SPM), collected from the German rivers Rhine and Saar, was conducted with the goal of identifying organic, permanent cationic contaminants and of estimating their temporal trends over an extended period. Therefore, annual composite samples of SPM, provided by the German Environmental Specimen Bank, were extracted and analyzed with high resolution LC-QToF-MS/MS. To facilitate the identification of substances belonging to the class "permanent cations", prioritization methods were applied utilizing the physicochemical properties of these compounds. These methods include both interactions of the analyte molecules with cation exchange resins and analyzing mass deviations when changing from non-deuterated to deuterated mobile phase solvents during LC-MS analysis. By applying both methods in a combined approach, 123 of the initially detected 2695 features were prioritized, corresponding to a 95% data reduction. This led to the identification of 22 permanent cationic species. The organic dyes Basic Yellow 28 and Fluorescent Brightener 363 as well as two quaternary ammonium compounds (QACs) were detected in environmental samples for the first time to best of or knowledge. The other compounds include additional QACs, as well as quaternary tri-phenylphosphonium compounds (QPC/TPP). In addition to identification, we determined temporal trends of all compounds over a period of 13 years and assessed their ecotoxicological relevance based on estimated concentrations. The two QACs oleyltrimethylammonium and eicosyltrimethylammonium show significant increasing trends in the Rhine SPM and maximum concentrations in the Saar SPM of about 900 and 1400 µg/kg, respectively. In the case of the dyes, constant trends have been observed at the end of the studied period, but also maximum concentrations of 400 µg/kg for Basic Yellow 28 in 2006 and 1000 µg/kg for Fluorescent Brightener 363 in 2015, potentially indicating a strong ecotoxicological risk.
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Affiliation(s)
- Toni Köppe
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Kevin S Jewell
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Björn Ehlig
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Arne Wick
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Jan Koschorreck
- Federal Environment Agency (Umweltbundesamt), Colditzstraße 34, 14193, Berlin, Germany
| | - Thomas A Ternes
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany.
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7
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Schwarz W, Wegener S, Schertzinger G, Pannekens H, Schweyen P, Dierkes G, Klein K, Ternes TA, Oehlmann J, Dopp E. Chemical and toxicological assessment of leachates from UV-degraded plastic materials using in-vitro bioassays. PeerJ 2023; 11:e15192. [PMID: 37065699 PMCID: PMC10103695 DOI: 10.7717/peerj.15192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/15/2023] [Indexed: 04/18/2023] Open
Abstract
The broad use of plastics and the persistence of the material results in plastic residues being found practically everywhere in the environment. If plastics remain in the (aquatic) environment, natural weathering leads to degradation processes and compounds may leach from plastic into the environment. To investigate the impact of degradation process on toxicity of leachates, different types of UV irradiation (UV-C, UV-A/B) were used to simulate weathering processes of different plastic material containing virgin as well as recyclate material and biodegradable polymers. The leached substances were investigated toxicologically using in-vitro bioassays. Cytotoxicity was determined by the MTT-assay, genotoxicity by using the p53-CALUX and Umu-assay, and estrogenic effects by the ERα-CALUX. Genotoxic as well as estrogenic effects were detected in different samples depending on the material and the irradiation type. In four leachates of 12 plastic species estrogenic effects were detected above the recommended safety level of 0.4 ng 17β-estradiol equivalents/L for surface water samples. In the p53-CALUX and in the Umu-assay leachates from three and two, respectively, of 12 plastic species were found to be genotoxic. The results of the chemical analysis show that plastic material releases a variety of known and unknown substances especially under UV radiation, leading to a complex mixture with potentially harmful effects. In order to investigate these aspects further and to be able to give recommendations for the use of additives in plastics, further effect-related investigations are advisable.
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Affiliation(s)
- Weike Schwarz
- Department of Toxicology, IWW Water Center, Mülheim a.d. Ruhr, NRW, Germany
| | - Stina Wegener
- Department of Toxicology, IWW Water Center, Mülheim a.d. Ruhr, NRW, Germany
| | - Gerhard Schertzinger
- Department of Toxicology, IWW Water Center, Mülheim a.d. Ruhr, NRW, Germany
- Center for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, NRW, Germany
| | - Helena Pannekens
- Department of Toxicology, IWW Water Center, Mülheim a.d. Ruhr, NRW, Germany
- Center for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, NRW, Germany
| | | | - Georg Dierkes
- Federal Institute of Hydrology (BfG), Koblenz, Germany
| | - Kristina Klein
- Department Aquatic Ecotoxicology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | | | - Jörg Oehlmann
- Department Aquatic Ecotoxicology, Goethe University Frankfurt, Frankfurt am Main, Germany
| | - Elke Dopp
- Department of Toxicology, IWW Water Center, Mülheim a.d. Ruhr, NRW, Germany
- Center for Water and Environmental Research (ZWU), University of Duisburg-Essen, Essen, NRW, Germany
- Medical Faculty, University Duisburg-Essen, Essen, NRW, Germany
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8
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Pütz E, Gazanis A, Keltsch NG, Jegel O, Pfitzner F, Heermann R, Ternes TA, Tremel W. Communication Breakdown: Into the Molecular Mechanism of Biofilm Inhibition by CeO 2 Nanocrystal Enzyme Mimics and How It Can Be Exploited. ACS NANO 2022; 16:16091-16108. [PMID: 36174231 DOI: 10.1021/acsnano.2c04377] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Bacterial biofilm formation is a huge problem in industry and medicine. Therefore, the discovery of anti-biofilm agents may hold great promise. Biofilm formation is usually a consequence of bacterial cell-cell communication, a process called quorum sensing (QS). CeO2 nanocrystals (NCs) have been established as haloperoxidase (HPO) mimics and ecologically beneficial biofilm inhibitors. They were suggested to interfere with QS, a mechanism termed quorum quenching (QQ), but their molecular mechanism remained elusive. We show that CeO2 NCs are effective QQ agents, inactivating QS signals by bromination. Catalytic bromination of 3-oxo-C12-AHL a QS signaling compound used by Pseudomonas aeruginosa, was detected in the presence of CeO2 NCs, bromide ions, and hydrogen peroxide. Brominated acyl-homoserine lactones (AHLs) no longer act as QS signals but were not detected in the bacterial cultures. Externally added brominated AHLs also disappeared in P. aeruginosa cultures within minutes of their addition, indicating that they are rapidly degraded by the bacteria. Moreover, we detected the catalytic bromination of 2-heptyl-1-hydroxyquinolin-4(1H)-one (HQNO), a multifunctional non-AHL QS signal from P. aeruginosa with antibacterial and algicidal properties controlling the expression of many virulence genes. Brominated HQNO was not degraded by the bacteria in vivo. The repression of the Pseudomonas quinolone signal (PQS) production and biofilm formation in P. aeruginosa through the catalytic formation of Br-HQNO on surfaces with coatings containing CeO2 enzyme mimics validates the non-toxic strategy for the development of anti-infectives.
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Affiliation(s)
- Eva Pütz
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Athanasios Gazanis
- Mikrobiologie und Biotechnologie, Institut für Molekulare PhysiologieJohannes Gutenberg-Universität Mainz, Biozentrum II, Hanns-Dieter-Hüsch-Weg 17, D-55128 Mainz, Germany
| | - Nils Gert Keltsch
- Bundesanstalt für Gewässerkunde, Am Mainzer Tor 1, D-56068 Koblenz, Germany
| | - Olga Jegel
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Felix Pfitzner
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Ralf Heermann
- Mikrobiologie und Biotechnologie, Institut für Molekulare PhysiologieJohannes Gutenberg-Universität Mainz, Biozentrum II, Hanns-Dieter-Hüsch-Weg 17, D-55128 Mainz, Germany
| | - Thomas A Ternes
- Bundesanstalt für Gewässerkunde, Am Mainzer Tor 1, D-56068 Koblenz, Germany
| | - Wolfgang Tremel
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
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9
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Klein K, Hof D, Dombrowski A, Schweyen P, Dierkes G, Ternes T, Schulte-Oehlmann U, Oehlmann J. Enhanced in vitro toxicity of plastic leachates after UV irradiation. WATER RESEARCH 2021; 199:117203. [PMID: 34004441 DOI: 10.1016/j.watres.2021.117203] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/24/2021] [Accepted: 04/26/2021] [Indexed: 06/12/2023]
Abstract
Plastics can release numerous chemicals and thereby, contribute to the chemical pollution in aquatic systems. To which extent environmental degradation processes influence the release of plastic chemicals, is currently unknown and subject of research. We therefore evaluated aqueous leachates of 12 differently formulated plastics (e.g., pre-production, post-industrial and recycled pellets as well as final products) using in vitro bioassays and chemical analysis via LC-HRMS nontarget approach. We weathered these plastics by UV irradiation (UV-C and UV-A/B) under laboratory conditions in dryness and a subsequent leaching period in ultrapure water ('atmospheric' weathering) or directly in water ('aquatic' weathering, UV-A/Baq). A dark control (DC) without UV light served as a reference treatment. Some plastics triggered several toxicological endpoints (low-density polyethylene recyclate (LDPE-R), starch blend (SB), bio-based polybutylene succinate (Bio-PBS) and polyvinyl chloride (PVC)), whereas others caused little to no effects (polyethylene terephthalate (PET), polystyrene (PS), polypropylene (PP) and LDPE). UV irradiation enhanced the plastics' toxicity, even for samples initially evaluated as toxicologically inconspicuous. The plastic samples caused oxidative stress (85%), baseline toxicity (42%), antiestrogenicity (40%) and antiandrogenicity (27%). Positive findings were measured after UV-C (63%) and UV-A/Baq (50%) treatments, followed by UV-A/B (48%) and DC (33%). Overall, we detected between 42 (DC) and 2896 (UV-A/Baq) chemical compounds. Our study demonstrates that differently formulated plastics leach toxic chemicals. UV exacerbates the plastics' toxicity by either generating active compounds and/or by facilitating their release. UV light even leads to the release of bioactive compounds from plastics of low chemical complexity. To prevent the exposure to plastic-associated chemicals, the application of chemicals could be reduced to a minimum, while on a regulatory level the evaluation of plastic eluates could be another focal point next to singular compounds.
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Affiliation(s)
- Kristina Klein
- Goethe University Frankfurt, Faculty of Biological Sciences, Department Aquatic Ecotoxicology, Max-von-Laue-Straße 13, 60438 Frankfurt am Main, Germany.
| | - Delia Hof
- Goethe University Frankfurt, Faculty of Biological Sciences, Department Aquatic Ecotoxicology, Max-von-Laue-Straße 13, 60438 Frankfurt am Main, Germany
| | - Andrea Dombrowski
- Goethe University Frankfurt, Faculty of Biological Sciences, Department Aquatic Ecotoxicology, Max-von-Laue-Straße 13, 60438 Frankfurt am Main, Germany
| | - Peter Schweyen
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Georg Dierkes
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Thomas Ternes
- Federal Institute of Hydrology, Am Mainzer Tor 1, 56068 Koblenz, Germany
| | - Ulrike Schulte-Oehlmann
- Goethe University Frankfurt, Faculty of Biological Sciences, Department Aquatic Ecotoxicology, Max-von-Laue-Straße 13, 60438 Frankfurt am Main, Germany
| | - Jörg Oehlmann
- Goethe University Frankfurt, Faculty of Biological Sciences, Department Aquatic Ecotoxicology, Max-von-Laue-Straße 13, 60438 Frankfurt am Main, Germany
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