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Chen JC, Liang J, Li ZE, Duan MH, Dai Y, Jin YG, Zhang YN, Liu Y, Zhang M, Wang GY, Yang F. In vitro antibacterial activity of danofloxacin against Escherichia coli in Gushi chickens and its residue depletion following multiple oral administration. Poult Sci 2024; 103:103493. [PMID: 38335674 PMCID: PMC10864797 DOI: 10.1016/j.psj.2024.103493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/12/2024] Open
Abstract
This study aimed to investigate the in vitro antibacterial activity of danofloxacin against Escherichia coli isolated from Gushi chickens, as well as the tissue distribution and residue depletion of danofloxacin in Gushi chickens following multiple oral administration. A total of 42 clinical E. coli strains were isolated from the cloaca of locally farmed Gushi chickens between August and October 2023. Then the minimum inhibitory concentration (MIC) of danofloxacin against these isolates was determined by broth microdilution method. Additionally, 42 healthy Gushi chickens were randomly divided into 6 groups, and danofloxacin was orally administered at a dose of 5 mg/kg body weight (BW) for 3 consecutive days. Plasma, intestinal content, and tissue samples, including muscle, skin + fat, liver, kidney, lung, and intestine, were collected at 4, 12, 24, 48, 72, and 120 h after the last administration. Danofloxacin concentrations in all samples were determined using a high-performance liquid chromatography (HPLC) method. The average concentration vs. time data were then subjected to noncompartmental analysis using Phoenix software, and withdrawal periods for danofloxacin in Gushi chickens were further determined with WT1.4 software, setting a 95% confidence interval. Results indicated a notable inhibitory effect of danofloxacin on E. coli, with an MIC50 of 0.5 μg/mL. Additionally, danofloxacin exhibited widespread distribution in Gushi chickens, detectable in all collected samples. Among all tissues, the liver exhibited the highest concentration, followed by the intestine. Even on the fifth day postadministration, danofloxacin persisted in skin + fat, liver, and lung. The elimination half-lives (t1/2λzs) of danofloxacin varied across samples: skin + fat (47.87 h), lung (30.61 h), liver (22.07 h), plasma (16.05 h), muscle (12.53 h), intestine (9.83 h), and kidney (6.34 h). Considering residue depletion and the maximum residue limit (MRL) of danofloxacin in poultry set by Chinese regulatory authorities, withdrawal periods for the kidney, muscle, liver, and skin + fat were determined as 1.03, 1.38, 3.34, and 5.85 d, respectively, rounded to a final withdrawal time of 6 d.
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Affiliation(s)
- Jun-Cheng Chen
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Jun Liang
- Zhengzhou Institute of Veterinary Drug and Feed Control, Zhengzhou 450002, China
| | - Ze-En Li
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Ming-Hui Duan
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Yan Dai
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Yang-Guang Jin
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Yan-Ni Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Yue Liu
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Mei Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Guo-Yong Wang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China
| | - Fan Yang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471023, China.
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Abudureheman M, Ailijiang N, Mamat A, Feng Y, He C, Pu M. Enhanced biodegradation of fluoroquinolones and the changes of bacterial communities and antibiotic-resistant genes under intermittent electrical stimulation. ENVIRONMENTAL RESEARCH 2023; 219:115127. [PMID: 36549493 DOI: 10.1016/j.envres.2022.115127] [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: 10/23/2022] [Revised: 12/14/2022] [Accepted: 12/18/2022] [Indexed: 06/17/2023]
Abstract
In this study, an anaerobic-aerobic coupling system under intermittent electrical stimulation was used to improve the biodegradation of synthetic wastewater containing fluoroquinolones (FQs). The effect of electrical stimulation on FQ removal performance is more pronounced with appropriate voltage and hydraulic retention time. In addition, the combination of anaerobic-anodic and aerobic-cathodic chambers is more conducive to improving the removal efficiency of FQs. Under 0.9 V, the removal efficiencies of ofloxacin, norfloxacin, ciprofloxacin, and enrofloxacin were significantly improved in the anaerobic-anodic and aerobic-cathodic system. The contribution of the anaerobic/aerobic anodic chambers to FQ removal was greater than that of the anaerobic/aerobic cathodic chambers. Electrical stimulation selectively enriched electroactive bacteria related to biodegradation (Desulfovibrio and Terrimonas), antibiotic-resistant bacteria (Atopobium and Neochlamydia), and nitrifying bacteria (SM1A02 and Reyranella). This study indicated the potential effectiveness of intermittent electrical stimulation in treating fluoroquinolone-containing wastewater in a biofilm reactor. However, electrical stimulation led to an increase in mobile genetic elements , induced horizontal gene transfer and enriched resistant bacteria, which accelerated the spread of antibiotic-resistant genes (ARGs) in the system, indicating that the diffusion of ARGs remains a challenge.
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Affiliation(s)
- Mukadasi Abudureheman
- Key Laboratory of Oasis Ecology of Education Ministry, College of Ecology and Environment, Xinjiang University, Urumqi 830017, PR China; Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Urumqi 830017, PR China
| | - Nuerla Ailijiang
- Key Laboratory of Oasis Ecology of Education Ministry, College of Ecology and Environment, Xinjiang University, Urumqi 830017, PR China; Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Urumqi 830017, PR China.
| | - Anwar Mamat
- School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, PR China
| | - Yuran Feng
- Key Laboratory of Oasis Ecology of Education Ministry, College of Ecology and Environment, Xinjiang University, Urumqi 830017, PR China; Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Urumqi 830017, PR China
| | - Chaoyue He
- Key Laboratory of Oasis Ecology of Education Ministry, College of Ecology and Environment, Xinjiang University, Urumqi 830017, PR China; Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Urumqi 830017, PR China
| | - Miao Pu
- Key Laboratory of Oasis Ecology of Education Ministry, College of Ecology and Environment, Xinjiang University, Urumqi 830017, PR China; Xinjiang Jinghe Observation and Research Station of Temperate Desert Ecosystem, Ministry of Education, Urumqi 830017, PR China
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Apreja M, Sharma A, Balda S, Kataria K, Capalash N, Sharma P. Antibiotic residues in environment: antimicrobial resistance development, ecological risks, and bioremediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:3355-3371. [PMID: 34773239 DOI: 10.1007/s11356-021-17374-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/01/2021] [Indexed: 06/13/2023]
Abstract
The overuse of antibiotics and their disposal without processing are leading the environment and its inhabitants towards a serious health emergency. There is abundance of diverse antibiotic resistance genes and bacteria in environment, which demands immediate attention for the effective removal of antibiotics. There are physical and chemical methods for removal, but the generation of toxic byproducts has directed the efforts towards bioremediation for eco-friendly and sustainable elimination of antibiotics from the environment. Various effective and reliable bioremediation approaches have been used, but still antibiotic residues pose a major global threat. Recent developments in molecular and synthetic biology might offer better solution for engineering of microbe-metabolite biodevices and development of novel strains endowed with desirable properties. This review summarizes the impact of antibiotics on environment, mechanisms of resistance development, and different bioremediation approaches.
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Affiliation(s)
- Mansi Apreja
- Department of Microbiology, Panjab University, Chandigarh, 160014, India
| | - Aarjoo Sharma
- Department of Microbiology, Panjab University, Chandigarh, 160014, India
| | - Sanjeev Balda
- Department of Microbiology, Panjab University, Chandigarh, 160014, India
| | - Kirti Kataria
- Department of Microbiology, Panjab University, Chandigarh, 160014, India
| | - Neena Capalash
- Department of Biotechnology, Panjab University, Chandigarh, India
| | - Prince Sharma
- Department of Microbiology, Panjab University, Chandigarh, 160014, India.
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Mathur P, Sanyal D, Callahan DL, Conlan XA, Pfeffer FM. Treatment technologies to mitigate the harmful effects of recalcitrant fluoroquinolone antibiotics on the environ- ment and human health. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 291:118233. [PMID: 34582925 DOI: 10.1016/j.envpol.2021.118233] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/06/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Antibiotic proliferation in the environment and their persistent nature is an issue of global concern as they induce antibiotic resistance threatening both human health and the ecosystem. Antibiotics have therefore been categorized as emerging pollutants. Fluoroquinolone (FQs) antibiotics are an emerging class of contaminants that are used extensively in human and veterinary medicine. The recalcitrant nature of fluoroquinolones has led to their presence in wastewater, effluents and water bodies. Even at a low concentration, FQs can stimulate antibacterial resistance. The main sources of FQ contamination include waste from pharmaceutical manufacturing industries, hospitals and households that ultimately reaches the wastewater treatment plants (WWTPs). The conventional WWTPs are unable to completely remove FQs due to their chemical stability. Therefore, the development and implementation of more efficient, economical, convenient treatment and removal technologies are needed to adequately address the issue. This review provides an overview of the technologies available for the removal of fluoroquinolone antibiotics from wastewater including adsorptive removal, advanced oxidation processes, removal using non-carbon based nanomaterials, microbial degradation and enzymatic degradation. Each treatment technology is discussed on its merits and limitations and a comparative view is presented on the choice of an advanced treatment process for future studies and implementation. A discussion on the commercialization potential and eco-friendliness of each technology is also included in the review. The importance of metabolite identification and their residual toxicity determination has been emphasized. The last section of the review provides an overview of the policy interventions and regulatory frameworks that aid in retrofitting antibiotics as a central key focus contaminant and thereby defining the discharge limits for antibiotics and establishing safe manufacturing practices.
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Affiliation(s)
- Purvi Mathur
- TERI-Deakin NanoBiotechnology Centre, Sustainable Agriculture Division, The Energy and Resources Institute, New Delhi, 110003, India; Deakin University, School of Life and Environmental Sciences (Burwood Campus), 221 Burwood Highway, Burwood, VIC, 3125, Australia
| | - Doyeli Sanyal
- TERI-Deakin NanoBiotechnology Centre, Sustainable Agriculture Division, The Energy and Resources Institute, New Delhi, 110003, India; Amity University Punjab, IT City, Sector 82A, Mohali, 140308, India.
| | - Damien L Callahan
- Deakin University, School of Life and Environmental Sciences (Burwood Campus), 221 Burwood Highway, Burwood, VIC, 3125, Australia
| | - Xavier A Conlan
- Deakin University, School of Life and Environmental Sciences, (Waurn Ponds Campus), 75 Pigdons Road, Locked Bag 20000, Geelong, VIC, 3220, Australia
| | - Frederick M Pfeffer
- Deakin University, School of Life and Environmental Sciences, (Waurn Ponds Campus), 75 Pigdons Road, Locked Bag 20000, Geelong, VIC, 3220, Australia
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Becker K, Stadler M. Recent progress in biodiversity research on the Xylariales and their secondary metabolism. J Antibiot (Tokyo) 2021; 74:1-23. [PMID: 33097836 PMCID: PMC7732752 DOI: 10.1038/s41429-020-00376-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/16/2020] [Accepted: 09/19/2020] [Indexed: 12/18/2022]
Abstract
The families Xylariaceae and Hypoxylaceae (Xylariales, Ascomycota) represent one of the most prolific lineages of secondary metabolite producers. Like many other fungal taxa, they exhibit their highest diversity in the tropics. The stromata as well as the mycelial cultures of these fungi (the latter of which are frequently being isolated as endophytes of seed plants) have given rise to the discovery of many unprecedented secondary metabolites. Some of those served as lead compounds for development of pharmaceuticals and agrochemicals. Recently, the endophytic Xylariales have also come in the focus of biological control, since some of their species show strong antagonistic effects against fungal and other pathogens. New compounds, including volatiles as well as nonvolatiles, are steadily being discovered from these ascomycetes, and polythetic taxonomy now allows for elucidation of the life cycle of the endophytes for the first time. Moreover, recently high-quality genome sequences of some strains have become available, which facilitates phylogenomic studies as well as the elucidation of the biosynthetic gene clusters (BGC) as a starting point for synthetic biotechnology approaches. In this review, we summarize recent findings, focusing on the publications of the past 3 years.
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Affiliation(s)
- Kevin Becker
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstraße 7, 38124, Braunschweig, Germany
- German Centre for Infection Research Association (DZIF), partner site Hannover-Braunschweig, Inhoffenstraße 7, 38124, Braunschweig, Germany
| | - Marc Stadler
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstraße 7, 38124, Braunschweig, Germany.
- German Centre for Infection Research Association (DZIF), partner site Hannover-Braunschweig, Inhoffenstraße 7, 38124, Braunschweig, Germany.
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Reliable performance of aggregation-induced emission nanoparticle-based lateral flow assay for norfloxacin detection in nine types of animal-derived food. Talanta 2020; 219:121245. [PMID: 32887136 DOI: 10.1016/j.talanta.2020.121245] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/21/2020] [Accepted: 05/27/2020] [Indexed: 12/26/2022]
Abstract
The wide application of lateral flow assay (LFA) was limited by its low sensitivity and poor matric tolerance. Aggregation induced emission (AIE) materials show superior luminescence and good stability under close packing state, which may accelerate the development of LFA. However, the detection performance of the AIE-based LFA in different real samples was unclear. In this work, an AIE-LFA was established for norfloxacin (NOR) detection in nine types of animal-derived food. Results indicated that AIE-LFA had the average recovery range of 75.6%-95.1%, 78.6%-94.6%, 71.4%-112.7%, 81.7%-121.8%, 72.7%-93.5%, 79.8%-108.5%, 79.2%-109.4%, 76.3%-103.6%, and 80.6%-108.3% in pork, pig liver, fish, lamb, beef, milk, chicken, egg, and honey, respectively. The detection results of AIE-LFA were compatible with HPLC-MS/MS in detecting NOR in 135 real samples from nine types of animal-derived food. The developed AIE-LFA was sensitive and reliable for NOR detection in those real samples.
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Hamscher G. Tierarzneimittel: Rückstände in Lebensmitteln und Umwelt. CHEM UNSERER ZEIT 2019. [DOI: 10.1002/ciuz.201900746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gerd Hamscher
- Institut für Lebensmittelchemie und LebensmittelbiotechnologieJustus‐Liebig‐Universität Gießen Heinrich‐Buff‐Ring 17 D‐35392 Gießen
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Abstract
While the description of resistance to quinolones is almost as old as these antimicrobial agents themselves, transferable mechanisms of quinolone resistance (TMQR) remained absent from the scenario for more than 36 years, appearing first as sporadic events and afterward as epidemics. In 1998, the first TMQR was soundly described, that is, QnrA. The presence of QnrA was almost anecdotal for years, but in the middle of the first decade of the 21st century, there was an explosion of TMQR descriptions, which definitively changed the epidemiology of quinolone resistance. Currently, 3 different clinically relevant mechanisms of quinolone resistance are encoded within mobile elements: (i) target protection, which is mediated by 7 different families of Qnr (QnrA, QnrB, QnrC, QnrD, QnrE, QnrS, and QnrVC), which overall account for more than 100 recognized alleles; (ii) antibiotic efflux, which is mediated by 2 main transferable efflux pumps (QepA and OqxAB), which together account for more than 30 alleles, and a series of other efflux pumps (e.g., QacBIII), which at present have been sporadically described; and (iii) antibiotic modification, which is mediated by the enzymes AAC(6')Ib-cr, from which different alleles have been claimed, as well as CrpP, a newly described phosphorylase.
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Degradation and transformation of fluoroquinolones by microorganisms with special emphasis on ciprofloxacin. Appl Microbiol Biotechnol 2019; 103:6933-6948. [DOI: 10.1007/s00253-019-10017-8] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 12/19/2022]
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Nekouei S, Nekouei F. Application of synthesized nano-CuS photocatalyst for degradation of Ofloxacin and its by-products. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1577893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Shahram Nekouei
- Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Farzin Nekouei
- Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Kostanjevecki P, Petric I, Loncar J, Smital T, Ahel M, Terzic S. Biodegradation study of methadone by adapted activated sludge: Elimination kinetics, transformation products and ecotoxicological evaluation. CHEMOSPHERE 2019; 214:719-728. [PMID: 30293025 DOI: 10.1016/j.chemosphere.2018.09.153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/25/2018] [Accepted: 09/26/2018] [Indexed: 06/08/2023]
Abstract
The biotransformation study of difficult-to-degrade opioid analgesic methadone (MTHD) was performed by activated sludge culture adapted to high concentration of methadone (10 mg/L). The study included determination of elimination kinetics of the parent compound, taxonomic characterization of microbial culture, identification of biotransformation products (TPs) and assessment of ecotoxicological effects of biotransformation processes. The chemical analyses were performed by ultra-performance liquid chromatography/quadrupole-time-of-flight mass spectrometry, whereas the ecotoxicological assessment was made based on determinations of toxicity to freshwater algae. Changes of the adapted sludge culture during the experiment were followed using the 16S rRNA gene amplicon sequencing. Depending on the experimental conditions, the elimination efficiency of methadone (10 mg/L) varied from 9% to 93% with the corresponding half-lives from 11.4 days to 1.5 days. A significantly faster elimination (t1/2 from 1.5 days to 5.8 days) was achieved at cometabolic conditions, using glucose-containing media, as compared to the experiments with MTHD as a single organic carbon source (t1/2 = 11.4 days). Moreover, increased biotransformation rate following the additional supplementation of ammonia, revealed a possible importance of nitrogen availability for the transformation at cometabolic conditions. The elimination of parent compound was associated with the formation of 3 different TPs, two of which were identical to main human metabolites of MTHD, 2-Ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) and 2-ethyl-5-methyl-3,3-diphenyl-1-pyrroline (EMDP). EDDP represented over 90% of the total TP concentration at the end of experiment. The biodegradation of MTHD was associated with a pronounced drop in algal toxicity, confirming a rather positive ecotoxicological outcome of the achieved biotransformation processes.
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Affiliation(s)
- Petra Kostanjevecki
- Division of Marine and Environmental Research, Rudjer Boskovic Institute, Bijenicka 54, 10000, Zagreb, Croatia
| | - Ines Petric
- Division of Marine and Environmental Research, Rudjer Boskovic Institute, Bijenicka 54, 10000, Zagreb, Croatia
| | - Jovica Loncar
- Division of Marine and Environmental Research, Rudjer Boskovic Institute, Bijenicka 54, 10000, Zagreb, Croatia
| | - Tvrtko Smital
- Division of Marine and Environmental Research, Rudjer Boskovic Institute, Bijenicka 54, 10000, Zagreb, Croatia
| | - Marijan Ahel
- Division of Marine and Environmental Research, Rudjer Boskovic Institute, Bijenicka 54, 10000, Zagreb, Croatia
| | - Senka Terzic
- Division of Marine and Environmental Research, Rudjer Boskovic Institute, Bijenicka 54, 10000, Zagreb, Croatia.
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Comparative procedure of photodegradation of methylene blue using N doped activated carbon loaded with hollow 3D flower like ZnS in two synergic phases of adsorption and catalytic. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Rusch M, Spielmeyer A, Zorn H, Hamscher G. Biotransformation of ciprofloxacin by Xylaria longipes: structure elucidation and residual antibacterial activity of metabolites. Appl Microbiol Biotechnol 2018; 102:8573-8584. [PMID: 30030566 DOI: 10.1007/s00253-018-9231-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/04/2018] [Accepted: 07/05/2018] [Indexed: 10/28/2022]
Abstract
The impressive ability of the fungus Xylaria longipes to transform the highly persistent fluoroquinolone ciprofloxacin into microbiologically less active degradation products was demonstrated. Fluoroquinolones are used extensively in both human and veterinary medicine. Poor metabolization and high chemical stability of these synthetic antibiotics led to their presence in several environmental compartments. This undesirable behavior may promote the spread of resistance mechanisms due to concomitant exposure to bacteria. Therefore, the biotransformation of ciprofloxacin, one of the most prescribed fluoroquinolones in human medicine, by the ascomycetous soft rot fungus X. longipes was investigated in detail. Submerged cultivation of the fungus allowed for high-yield formation of four biotransformation products. These compounds were subsequently purified by preparative high-performance liquid chromatography. Applying accurate mass spectrometry and nuclear magnetic resonance spectroscopy, desethylene-ciprofloxacin, desethylene-N-acetyl-ciprofloxacin, N-formyl-ciprofloxacin and N-acetyl-ciprofloxacin were unambiguously identified. N-acetylation and N-formylation of the drug led to a 75-88% reduction of the initial antibacterial activity, whereas a breakdown of the piperazine substituent resulted in almost inactive products. These findings suggest an important role in the inactivation and degradation of this and other synthetic compounds in the environment.
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Affiliation(s)
- Marina Rusch
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Astrid Spielmeyer
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Holger Zorn
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Gerd Hamscher
- Institute of Food Chemistry and Food Biotechnology, Justus Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany.
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Nekouei S, Nekouei F. Photocatalytic degradation of norfloxacin and its intermediate degradation products using nitrogen-doped activated carbon-CuS nanocomposite assisted by visible irradiation. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4418] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shahram Nekouei
- Young Researchers and Elites Club, Science and Research Branch; Islamic Azad University; Tehran Iran
| | - Farzin Nekouei
- Young Researchers and Elites Club, Science and Research Branch; Islamic Azad University; Tehran Iran
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15
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Nekouei S, Nekouei F, Kargarzadeh H. Synthesis of ZnO photocatalyst modified with activated carbon for a perfect degradation of ciprofloxacin and its secondary pollutants. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.4198] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shahram Nekouei
- Young Researchers and Elites Club, Science and Research BranchIslamic Azad University Tehran Iran
| | - Farzin Nekouei
- Young Researchers and Elites Club, Science and Research BranchIslamic Azad University Tehran Iran
| | - Hanieh Kargarzadeh
- Faculty of Science and Technology, School of Chemical Sciences and Food Technology, Polymer Research Center (PORCE)Universiti Kebangsaan Malaysia (UKM) 43600 Bangi Selangor Malaysia
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Rusch M, Spielmeyer A, Meißner J, Kietzmann M, Zorn H, Hamscher G. Efficient Reduction of Antibacterial Activity and Cytotoxicity of Fluoroquinolones by Fungal-Mediated N-Oxidation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3118-3126. [PMID: 28365994 DOI: 10.1021/acs.jafc.7b01246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Extensive usage of fluoroquinolone antibiotics in livestock results in their occurrence in manure and subsequently in the environment. Fluoroquinolone residues may promote bacterial resistance and are toxic to plants and aquatic organisms. Moreover, fluoroquinolones may enter the food chain through plant uptake, if manure is applied as fertilizer. Thus, the presence of fluoroquinolones in the environment may pose a threat to human and ecological health. In this study, the biotransformation of enrofloxacin, marbofloxacin, and difloxacin by the fungus X. longipes (Xylaria) was investigated. The main metabolites were unequivocally identified as the respective N-oxides by mass spectrometry and nuclear magnetic resonance spectroscopy. Fungal-mediated N-oxidation of fluoroquinolones led to a 77-90% reduction of the initial antibacterial activity. In contrast to their respective parent compounds, N-oxides showed low cytotoxic potential and had a reduced impact on cell proliferation. Thus, biotransformation by X. longipes may represent an effective method for inactivating fluoroquinolones.
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Affiliation(s)
- Marina Rusch
- Justus Liebig University Giessen , Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Astrid Spielmeyer
- Justus Liebig University Giessen , Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Jessica Meißner
- University of Veterinary Medicine Hannover Foundation , Institute of Pharmacology, Toxicology and Pharmacy, Buenteweg 17, 30559 Hannover, Germany
| | - Manfred Kietzmann
- University of Veterinary Medicine Hannover Foundation , Institute of Pharmacology, Toxicology and Pharmacy, Buenteweg 17, 30559 Hannover, Germany
| | - Holger Zorn
- Justus Liebig University Giessen , Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Fraunhofer IME , Project Group Bioresources, 35392 Giessen, Germany
| | - Gerd Hamscher
- Justus Liebig University Giessen , Institute of Food Chemistry and Food Biotechnology, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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17
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Shang Z, Salim AA, Khalil Z, Bernhardt PV, Capon RJ. Fungal Biotransformation of Tetracycline Antibiotics. J Org Chem 2016; 81:6186-94. [DOI: 10.1021/acs.joc.6b01272] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhuo Shang
- Institute for Molecular Bioscience and ‡School of Chemistry
and Molecular
Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Angela A. Salim
- Institute for Molecular Bioscience and ‡School of Chemistry
and Molecular
Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Zeinab Khalil
- Institute for Molecular Bioscience and ‡School of Chemistry
and Molecular
Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Paul V. Bernhardt
- Institute for Molecular Bioscience and ‡School of Chemistry
and Molecular
Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
| | - Robert J. Capon
- Institute for Molecular Bioscience and ‡School of Chemistry
and Molecular
Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia
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18
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Gulde R, Meier U, Schymanski EL, Kohler HPE, Helbling DE, Derrer S, Rentsch D, Fenner K. Systematic Exploration of Biotransformation Reactions of Amine-Containing Micropollutants in Activated Sludge. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:2908-2920. [PMID: 26864277 DOI: 10.1021/acs.est.5b05186] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The main removal process for polar organic micropollutants during activated sludge treatment is biotransformation, which often leads to the formation of stable transformation products (TPs). Because the analysis of TPs is challenging, the use of pathway prediction systems can help by generating a list of suspected TPs. To complete and refine pathway prediction, comprehensive biotransformation studies for compounds exhibiting pertinent functional groups under environmentally relevant conditions are needed. Because many polar organic micropollutants present in wastewater contain one or several amine functional groups, we systematically explored amine biotransformation by conducting experiments with 19 compounds that contained 25 structurally diverse primary, secondary, and tertiary amine moieties. The identification of 144 TP candidates and the structure elucidation of 101 of these resulted in a comprehensive view on initial amine biotransformation reactions. The reactions with the highest relevance were N-oxidation, N-dealkylation, N-acetylation, and N-succinylation. Whereas many of the observed reactions were similar to those known for the mammalian metabolism of amine-containing xenobiotics, some N-acylation reactions were not previously described. In general, different reactions at the amine functional group occurred in parallel. Finally, recommendations on how these findings can be implemented to improve microbial pathway prediction of amine-containing micropollutants are given.
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Affiliation(s)
- Rebekka Gulde
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Department of Environmental Systems Science (D-USYS), ETH Zürich , 8092 Zürich, Switzerland
| | - Ulf Meier
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
| | - Emma L Schymanski
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
| | - Hans-Peter E Kohler
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Department of Environmental Systems Science (D-USYS), ETH Zürich , 8092 Zürich, Switzerland
| | - Damian E Helbling
- School of Civil and Environmental Engineering, Cornell University , Ithaca, New York 14853, United States
| | - Samuel Derrer
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
| | - Daniel Rentsch
- EMPA, Swiss Federal Laboratories for Materials Science and Technology , 8600 Dübendorf, Switzerland
| | - Kathrin Fenner
- Eawag, Swiss Federal Institute of Aquatic Science and Technology , 8600 Dübendorf, Switzerland
- Department of Environmental Systems Science (D-USYS), ETH Zürich , 8092 Zürich, Switzerland
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19
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Microbial degradation of fluorinated drugs: biochemical pathways, impacts on the environment and potential applications. Appl Microbiol Biotechnol 2016; 100:2617-27. [PMID: 26830103 DOI: 10.1007/s00253-016-7304-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/05/2016] [Accepted: 01/07/2016] [Indexed: 12/25/2022]
Abstract
Since the discovery over 60 years ago of fluorocortisone's biological properties (9-α-Fluoro derivatives of cortisone and hydrocortisone; Fried J and Sabo EF, J Am Chem Soc 76: 1455-1456, 1954), the number of fluorinated drugs has steadily increased. With the improvement in synthetic methodologies, this trend is likely to continue and will lead to the introduction of new fluorinated substituents into pharmaceutical compounds. Although the biotransformation of organofluorine compounds by microorganisms has been well studied, specific investigations on fluorinated drugs are relatively few, despite the increase in the number and variety of fluorinated drugs that are available. The strength of the carbon-fluorine bond conveys stability to fluorinated drugs; thus, they are likely to be recalcitrant in the environment or may be partially metabolized to a more toxic metabolite. This review examines the research done on microbial biotransformation and biodegradation of fluorinated drugs and highlights the importance of understanding how microorganisms interact with this class of compound from environmental, clinical and biotechnological perspectives.
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