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Zhuang Q, Guo H, Peng T, Ding E, Zhao H, Liu Q, He S, Zhao G. Advances in the detection of β-lactamase: A review. Int J Biol Macromol 2023; 251:126159. [PMID: 37549760 DOI: 10.1016/j.ijbiomac.2023.126159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/17/2023] [Accepted: 08/04/2023] [Indexed: 08/09/2023]
Abstract
β-lactamase, an enzyme secreted by bacteria, is the main resistant mechanism of Gram-negative bacteria to β-lactam antibiotics. The resistance of bacteria to β-lactam antibiotics can be evaluated by testing the activity of β-lactamase. Traditional phenotypic detection is a golden principle, but it is time-consuming. In recent years, many new methods have emerged, which improve the efficiency by virtue of their sensitivity, low cost, easy operation, and other advantages. In this paper, we systematically review these researches and emphasize their limits of detection, sample operation, and test duration. Noteworthily, some detection systems can identify the β-lactamase subtype conveniently. We mainly divide these tests into three categories to elaborate their characteristics and application status. Both advantages and disadvantages of these methods are discussed. Additionally, we analyze the recent 5 years published researches to predict the trend of development in this field.
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Affiliation(s)
- Qian Zhuang
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, Liaoning 110122, China; Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110122, China
| | - Huijun Guo
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Tian Peng
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Enjie Ding
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Hui Zhao
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Qiulan Liu
- General Party Branch of the Second Clinical Department, China Medical University, Shenyang, Liaoning 110122, China
| | - Shiyin He
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, Liaoning 110122, China
| | - Guojie Zhao
- Department of Biochemistry and Molecular Biology, China Medical University, Shenyang, Liaoning 110122, China.
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Zhu X, Zhang H, Chen Z, Zhai Y, Wang Y. Electrochemical fingerprinting of cephalosporin antibiotics and its applications for investigations of hydrolysis behavior. Chemosphere 2023; 315:137725. [PMID: 36610510 DOI: 10.1016/j.chemosphere.2022.137725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/26/2022] [Accepted: 12/30/2022] [Indexed: 06/17/2023]
Abstract
Cephalosporin, as one of the most widely used antibiotics, study of its hydrolysis process is important for predicting their environmental persistence. Two critical factors are considered has the first priority, which are hydrolysis rate constant (kh) and half-life (t1/2). To date, many efforts have been made by using various analytical techniques to obtain the data for calculating kh and t1/2. However, the typical techniques such as UV/vis spectrophotometry and liquid chromatography are of significant challenges like low accuracy and timely operations. Herein, we explored an electrochemical method by identifying the characteristic peaks with the same parent nuclear structure through square wave voltammetry (SWV). This proposed electrochemical fingerprinting was able to track the hydrolysis of intact cephalosporin molecules, β-lactam ring, and transformation product. The kh and t1/2 of cefadroxil (CDX) under pH = 7 and 25 °C by electrochemical (0.0640 d-1 and 11.0 d) were consistent with those of high-performance liquid chromatography-UV/vis (HPLC-UV/vis) (0.0660 d-1 and 10.7 d). The t1/2 ranged from 3.40 to 36.2 d, 7.33 d-43.7 d and 9.63 d-45.3 d for base-catalyzed, neutral pH and acid-catalyzed hydrolysis hydrolyzed, respectively, indicating that base-catalyzed hydrolysis rates were the greatest under alkaline conditions. Meanwhile, hydrolysis rates increased 2.50-3.60-fold for every 10 °C raise in temperature. Besides, the electrochemical fingerprinting could realize cephalosporin and β-lactam ring hydrolysis rates close to 100% in-situ hydrolysis process monitoring. This present work provides a powerful technology for understanding the environmental fate and predicting the environmental behavior of antibiotics with fast, high accuracy, specific recognition, and in situ monitoring.
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Affiliation(s)
- Xiaoyu Zhu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
| | - Huirong Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Zhixuan Chen
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Yongxin Zhai
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China
| | - Ying Wang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, China.
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Sohrabnezhad S, Pourahmad A, Karimi MF. Magnetite-metal organic framework core@shell for degradation of ampicillin antibiotic in aqueous solution. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121420] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang X, Guo Y, Pan Y, Yang X. Distinct effects of copper on the degradation of β-lactam antibiotics in fulvic acid solutions during light and dark cycle. Environ Sci Ecotechnol 2020; 3:100051. [PMID: 36159600 PMCID: PMC9488106 DOI: 10.1016/j.ese.2020.100051] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/12/2020] [Accepted: 06/12/2020] [Indexed: 05/22/2023]
Abstract
This study revealed the dual roles of Cu(II) on the β-lactam antibiotics degradation in Suwannee River fulvic acid (SRFA) solution during day and night cycle. Amoxicillin (AMX) and ampicillin (AMP) were selected as the representative β-lactam antibiotics. Cu(II) played a key role in the dark degradation of AMX and AMP via catalytic hydrolysis and oxidation. However, Cu(II) mainly exhibited an inhibitory effect on SRFA-involved photochemical degradation of AMX and AMP. In the presence of 500 nM of Cu(II), the degradation rate of AMX and AMP in the light condition were around 5 times higher than that in the dark condition, suggesting the photodegradation of β-lactam antibiotics was much more pronounced than catalyzed hydrolysis and oxidation. The triplet excited state of SRFA (3SRFA∗) primarily contributed to AMX and AMP photodegradation. Hydroxyl radicals (•OH) and singlet oxygen (1O2) exhibited limit impacts. The redox cycle of Cu(II)/Cu(I) restricted the electron transfer pathway of 3SRFA∗ with AMX and AMP. During the day and night cycles for 48 h, Cu(II) served as a stronger inhibitor rather than a promotor. These findings highlight the interactions between Cu(II) and SRFA are distinct under day and night conditions, which could further affect the fate of β-lactam antibiotics in natural environments.
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Hrioua A, Farahi A, Lahrich S, Bakasse M, Saqrane S, El Mhammedi MA. Chronoamperometric Detection of Amoxicillin at Graphite Electrode using Chelate Effect of Copper(II) Ions : Application in Human Blood and Pharmaceutical Tablets. ChemistrySelect 2019. [DOI: 10.1002/slct.201901689] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Asmaa Hrioua
- Sultan Moulay Slimane University of Beni MellalLaboratory of ChemistryModeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga MoroccoTel.: +212 68858296
| | - Abdelfattah Farahi
- Ibn Zohr UniversityTeam of Catalysis and EnvironmentFaculty of Sciences, BP 8106 Cité Dakhla, Agadir Morocco
| | - Sara Lahrich
- Sultan Moulay Slimane University of Beni MellalLaboratory of ChemistryModeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga MoroccoTel.: +212 68858296
| | - Mina Bakasse
- Chouaib Doukkali UniversityFaculty of SciencesLaboratory of Organic Bioorganic Chemistry and Environment Morocco
| | - Sana Saqrane
- Sultan Moulay Slimane University of Beni MellalLaboratory of ChemistryModeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga MoroccoTel.: +212 68858296
| | - Moulay Abderrahim El Mhammedi
- Sultan Moulay Slimane University of Beni MellalLaboratory of ChemistryModeling and Environmental Sciences, Polydisciplinary faculty 25 000 Khouribga MoroccoTel.: +212 68858296
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Peters K, Pazos M, Edoo Z, Hugonnet JE, Martorana AM, Polissi A, VanNieuwenhze MS, Arthur M, Vollmer W. Copper inhibits peptidoglycan LD-transpeptidases suppressing β-lactam resistance due to bypass of penicillin-binding proteins. Proc Natl Acad Sci U S A 2018; 115:10786-91. [PMID: 30275297 DOI: 10.1073/pnas.1809285115] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The peptidoglycan (PG) layer stabilizes the bacterial cell envelope to maintain the integrity and shape of the cell. Penicillin-binding proteins (PBPs) synthesize essential 4-3 cross-links in PG and are inhibited by β-lactam antibiotics. Some clinical isolates and laboratory strains of Enterococcus faecium and Escherichia coli achieve high-level β-lactam resistance by utilizing β-lactam-insensitive LD-transpeptidases (LDTs) to produce exclusively 3-3 cross-links in PG, bypassing the PBPs. In E. coli, other LDTs covalently attach the lipoprotein Lpp to PG to stabilize the envelope and maintain the permeability barrier function of the outermembrane. Here we show that subminimal inhibitory concentration of copper chloride sensitizes E. coli cells to sodium dodecyl sulfate and impair survival upon LPS transport stress, indicating reduced cell envelope robustness. Cells grown in the presence of copper chloride lacked 3-3 cross-links in PG and displayed reduced covalent attachment of Braun's lipoprotein and reduced incorporation of a fluorescent d-amino acid, suggesting inhibition of LDTs. Copper dramatically decreased the minimal inhibitory concentration of ampicillin in E. coli and E. faecium strains with a resistance mechanism relying on LDTs and inhibited purified LDTs at submillimolar concentrations. Hence, our work reveals how copper affects bacterial cell envelope stability and counteracts LDT-mediated β-lactam resistance.
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Guo Y, Tsang DCW, Zhang X, Yang X. Cu(II)-catalyzed degradation of ampicillin: effect of pH and dissolved oxygen. Environ Sci Pollut Res Int 2018; 25:4279-4288. [PMID: 29178018 DOI: 10.1007/s11356-017-0524-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/18/2017] [Indexed: 06/07/2023]
Abstract
Cu(II)-catalyzed hydrolysis of β-lactam antibiotics has been well-identified and recognized as the key mechanism of antibiotic degradation. However, the overlooked Cu(II) oxidation susceptibly also plays an important role comparably with hydrolysis. This study evaluated the roles of hydrolysis and oxidation in Cu(II)-catalyzed degraded ampicillin (AMP), as a typical β-lactam antibiotic, under relevant environmental conditions (pH 5.0, 7.0, and 9.0; oxygen 0.2 and 6.2 mg/L). Under AMP and Cu(II) molar ratio of 1:1, AMP degradation was the fastest at pH 9.0, followed by pH 5.0 and pH 7.0. The facilitation of oxygen on AMP degradation was notable at pH 5.0 and 7.0 rather than pH 9.0. AMP degradation rate increased from 21.8% in 0.2 mg/L O2 solution to 85.9% in 6.2 mg/L O2 solution at pH 7.0 after 4-h reaction. AMP oxidation was attributed to both oxygen-derived Cu(I)/Cu(II) cycle and intermediate reactive oxygen species (HO. and O2.-). Several intermediate and final products in AMP degradation were firstly identified by LC-quadrupole time-of-flight-MS analysis. Phenylglycine primary amine on the AMP structure was the essential complexation site to proceed with the oxidation reaction. The oxidation of AMP preferentially occurred on the β-lactam structure. The inherent mechanisms related to pH and oxygen conditions were firstly investigated, which could enhance the understanding of both oxidation and hydrolysis mechanisms in AMP degradation. This study not only has an important implication in predicting β-lactam antibiotic transformation and fate in natural environment but also benefits the developing of strategies of antibiotic control to reduce the environmental risk.
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Affiliation(s)
- Yiming Guo
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Xinran Zhang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China.
| | - Xin Yang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, 510275, China.
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Chen J, Wang Y, Qian Y, Huang T. Fe(III)-promoted transformation of β-lactam antibiotics: Hydrolysis vs oxidation. J Hazard Mater 2017; 335:117-124. [PMID: 28437695 DOI: 10.1016/j.jhazmat.2017.03.067] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 03/16/2017] [Accepted: 03/31/2017] [Indexed: 05/18/2023]
Abstract
The widely used β-lactam antibiotics are susceptible to oxidative and/or hydrolytic degradation promoted by some metal ions (e.g., Cu(II)). Ferric ions (Fe(III)) are among the most common metal ions, but their role in the environmental transformation and fate of β-lactam antibiotics is still unknown. This study elucidates that Fe(III) can promote degradation of β-lactam antibiotics under environmental aquatic conditions. Degradation rate constants of ampicillin (AMP) linearly increased with increasing Fe(III) concentration, but were independent of AMP concentration when AMP was higher than Fe(III) concentration. Neutral pH was most favorable for Fe(III)-promoted degradation of AMP, and the promoted degradation was also significant in real surface water and wastewater matrix. Among the various β-lactam antibiotics, Fe(III)-promoted degradation of penicillins was faster than that of cephalosporins. Product analysis indicated that only two isomers of hydrolysis products were observed without detection of oxidation products. The Fe(III)-promoted degradation likely occurred via complexation of β-lactam antibiotics with carboxyl group and tertiary nitrogen, and then enhancing the hydrolytic cleavage of β-lactam ring. This study is among the first to identify the role of Fe(III) in the degradation of β-lactam antibiotics and elucidate the mechanism. The new findings indicate iron species are among the factors affecting the environmental fate of β-lactam antibiotics.
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Affiliation(s)
- Jiabin Chen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, PR China
| | - Ying Wang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, PR China
| | - Yajie Qian
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Tianyin Huang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215001, PR China.
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Chen J, Sun P, Zhang Y, Huang CH. Multiple Roles of Cu(II) in Catalyzing Hydrolysis and Oxidation of β-Lactam Antibiotics. Environ Sci Technol 2016; 50:12156-12165. [PMID: 27934235 DOI: 10.1021/acs.est.6b02702] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The widely used β-lactam antibiotics such as penicillins and cephalosporins are known to be susceptible to CuII-catalyzed hydrolysis at their four-membered β-lactam ring. However, this study elucidates that CuII can in fact play multiple roles in promoting the hydrolysis and/or oxidation of β-lactam antibiotics under environmental aquatic conditions (pH 5.0-9.0 and 22 °C), depending on β-lactams' structural characteristics and solution pH. Most significantly, the β-lactam antibiotics that contain a phenylglycine primary amine group on the side chain can undergo direct oxidation by CuII via this functional group. On the other hand, the β-lactam ring of penicillins is susceptible to CuII-catalyzed hydrolysis, followed by oxidation of the hydrolysis product by CuII. In contrast, the β-lactam ring of cephalosporins is susceptible to CuII-catalyzed hydrolysis only. Solution pH influences the CuII-promoted transformation by affecting the β-lactam and CuII complexation through protonation/deprotonation of critical organic functional groups. When CuII acts as an oxidant to promote the transformation of β-lactam antibiotics to yield CuI, the overall role of CuII appears catalytic if the reaction occurs under ambient atmospheric condition, due to quick oxidation of CuI by oxygen to regenerate CuII. Compared to earlier literature that largely assumed only the hydrolytic catalyst role of CuII in promoting degradation of β-lactam antibiotics, the oxidative roles of CuII identified by this study mark important contributions to a more accurate mechanistic understanding.
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Affiliation(s)
- Jiabin Chen
- School of Environmental Science and Engineering, Suzhou University of Science and Technology , Suzhou 215001, P. R. China
- School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
- College of Environmental Science and Engineering, Tongji University , Shanghai, 200092, P. R. China
| | - Peizhe Sun
- School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
| | - Yalei Zhang
- College of Environmental Science and Engineering, Tongji University , Shanghai, 200092, P. R. China
| | - Ching-Hua Huang
- School of Civil and Environmental Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States
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Esmaeilpour M, Sardarian AR, Jarrahpour A, Ebrahimi E, Javidi J. Synthesis and characterization of β-lactam functionalized superparamagnetic Fe3O4@SiO2 nanoparticles as an approach for improvement of antibacterial activity of β-lactams. RSC Adv 2016. [DOI: 10.1039/c6ra03634a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Preparation of magnetic β-lactam functionalized Fe3O4@SiO2 nanoparticles has a synergic effect to improve the antibacterial activity.
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Affiliation(s)
| | | | | | - Edris Ebrahimi
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz
- Iran
| | - Jaber Javidi
- Department of Pharmaceutics
- School of Pharmacy
- Shahid Beheshti University of Medical Sciences
- Tehran
- Iran
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Su M, Sun H, Zhao Y, Lu A, Cao X, Wang J. Degradation Kinetics and Mechanism of a β-Lactam Antibiotic Intermediate, 6-Aminopenicillanic Acid, in a New Integrated Production Process. J Pharm Sci 2016; 105:139-46. [DOI: 10.1016/j.xphs.2015.11.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/03/2015] [Accepted: 11/10/2015] [Indexed: 11/20/2022]
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Chen J, Sun P, Zhou X, Zhang Y, Huang CH. Cu(II)-catalyzed transformation of benzylpenicillin revisited: the overlooked oxidation. Environ Sci Technol 2015; 49:4218-25. [PMID: 25759948 DOI: 10.1021/es505114u] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Penicillins, a class of widely used β-lactam antibiotics, are known to be susceptible to catalyzed hydrolysis by metal ions such as Cu(II). However, new results in this study strongly indicate that the role of Cu(II) is not merely a hydrolysis catalyst but also an oxidant. When benzylpenicillin (i.e., penicillin G (PG)) was exposed to Cu(II) ion at an equal molar ratio and pH 7, degradation of PG occurred rapidly in the oxygen-rich solution but gradually slowed down to a halt in the oxygen-limited solution. In-depth studies revealed that Cu(II) catalyzed hydrolysis of PG to benzylpenicilloic acid (PA) and oxidized PA to yield phenylacetamide and other products. The availability of oxygen played the role in reoxidizing Cu(I) back to Cu(II), which sustained fast degradation of PG over time. The overall reaction was also influenced by pH, with Cu(II)-catalyzed hydrolysis of PG occurring throughout pH 5, 7 and 9, while Cu(II) oxidation of PA occurring at pH 7 and 9. Note that the potential of Cu(II) to oxidize penicillins was largely overlooked in the previous literature, and catalyzed hydrolysis was frequently assumed as the only reaction. This study is among the first to identify the dual roles of Cu(II) in the entire degradation process of PG and systematically investigate the overlooked oxidation reaction to elucidate the mechanism. The new mechanistic knowledge has important implications for many other β-lactam antibiotics for their interactions with Cu(II), and significantly improves the ability to predict the environmental fate and transformation products of PG and related penicillins in systems where Cu(II) species are also present.
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Affiliation(s)
- Jiabin Chen
- †College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
- ‡School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- §School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215001, P. R. China
| | - Peizhe Sun
- ‡School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Xuefei Zhou
- †College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Yalei Zhang
- †College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, P. R. China
| | - Ching-Hua Huang
- ‡School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Zheng T, Nolan EM. Enterobactin-mediated delivery of β-lactam antibiotics enhances antibacterial activity against pathogenic Escherichia coli. J Am Chem Soc 2014; 136:9677-91. [PMID: 24927110 PMCID: PMC4353011 DOI: 10.1021/ja503911p] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Indexed: 02/08/2023]
Abstract
The design, synthesis, and characterization of enterobactin-antibiotic conjugates, hereafter Ent-Amp/Amx, where the β-lactam antibiotics ampicillin (Amp) and amoxicillin (Amx) are linked to a monofunctionalized enterobactin scaffold via a stable poly(ethylene glycol) linker are reported. Under conditions of iron limitation, these siderophore-modified antibiotics provide enhanced antibacterial activity against Escherichia coli strains, including uropathogenic E. coli CFT073 and UTI89, enterohemorrhagic E. coli O157:H7, and enterotoxigenic E. coli O78:H11, compared to the parent β-lactams. Studies with E. coli K-12 derivatives defective in ferric enterobactin transport reveal that the enhanced antibacterial activity observed for this strain requires the outer membrane ferric enterobactin transporter FepA. A remarkable 1000-fold decrease in minimum inhibitory concentration (MIC) value is observed for uropathogenic E. coli CFT073 relative to Amp/Amx, and time-kill kinetic studies demonstrate that Ent-Amp/Amx kill this strain more rapidly at 10-fold lower concentrations than the parent antibiotics. Moreover, Ent-Amp and Ent-Amx selectively kill E. coli CFT073 co-cultured with other bacterial species such as Staphylococcus aureus, and Ent-Amp exhibits low cytotoxicity against human T84 intestinal cells in both the apo and iron-bound forms. These studies demonstrate that the native enterobactin platform provides a means to effectively deliver antibacterial cargo across the outer membrane permeability barrier of Gram-negative pathogens utilizing enterobactin for iron acquisition.
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Affiliation(s)
- Tengfei Zheng
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Elizabeth M. Nolan
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Samani Ghaleh Taki B, Mirkhani V, Mohammadpoor-Baltork I, Moghadam M, Tangestaninejad S, Rostami M, Khosropour AR. Synthesis and Characterization of Nano Silica Supported Tungstophosphoric Acid: An Efficient, Reusable Heterogeneous Catalyst for the Synthesis of Azlactones. J Inorg Organomet Polym Mater 2013. [DOI: 10.1007/s10904-012-9810-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hölzel CS, Müller C, Harms KS, Mikolajewski S, Schäfer S, Schwaiger K, Bauer J. Heavy metals in liquid pig manure in light of bacterial antimicrobial resistance. Environ Res 2012; 113:21-27. [PMID: 22280821 DOI: 10.1016/j.envres.2012.01.002] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 12/30/2011] [Accepted: 01/04/2012] [Indexed: 05/31/2023]
Abstract
Heavy metals are regularly found in liquid pig manure, and might interact with bacterial antimicrobial resistance. Concentrations of heavy metals were determined by atomic spectroscopic methods in 305 pig manure samples and were connected to the phenotypic resistance of Escherichia coli (n=613) against 29 antimicrobial drugs. Concentrations of heavy metals (/kg dry matter) were 0.08-5.30 mg cadmium, 1.1-32.0 mg chrome, 22.4-3387.6 mg copper, <2.0-26.7 mg lead, <0.01-0.11 mg mercury, 3.1-97.3 mg nickel and 93.0-8239.0 mg zinc. Associated with the detection of copper and zinc, resistance rates against β-lactams were significantly elevated. By contrast, the presence of mercury was significantly associated with low antimicrobial resistance rates of Escherichia coli against β-lactams, aminoglycosides and other antibiotics. Effects of subinhibitory concentrations of mercury on bacterial resistance against penicillins, cephalosporins, aminoglycosides and doxycycline were also demonstrated in a laboratory trial. Antimicrobial resistance in the porcine microflora might be increased by copper and zinc. By contrast, the occurrence of mercury in the environment might, due to co-toxicity, act counter-selective against antimicrobial resistant strains.
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Affiliation(s)
- Christina S Hölzel
- Chair of Animal Hygiene, Technische Universität München, Weihenstephaner Berg 3, 85354 Freising, Germany.
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Xie P, Tao X, Xu W, Fan LY, Zhang W, Zhi YE, Zhou P, Cao CX. Mercuric mercaptide of penicillenic acid, a novel hapten for relevant immunoassay, synthesized from penicillin. J Immunol Methods 2010; 353:1-7. [DOI: 10.1016/j.jim.2009.12.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Revised: 10/28/2009] [Accepted: 12/09/2009] [Indexed: 10/20/2022]
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Kumar R, Mishra P. Spectroscopic, thermal and X-ray powder diffraction patterns of Bi(V) complexes with [2S-[2𝛂, 5𝛂, 6𝛃(S*)]-6-[amino(4-hydroxyphenyl) acetylamino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3,2,0] hepatane-2-carboxylic acid and (6R)-6-(𝛂-phenyl-d-glycyamino) penicillinic acids. Main Group Chemistry 2008. [DOI: 10.1080/10241220801889033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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