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Liu X, Lu S, Guo W, Xi B, Wang W. Antibiotics in the aquatic environments: A review of lakes, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 94:736-757. [PMID: 30857084 DOI: 10.1016/j.envint.2016.06.025] [Citation(s) in RCA: 560] [Impact Index Per Article: 93.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 05/19/2016] [Accepted: 06/19/2016] [Indexed: 05/05/2023]
Abstract
The potential threat of antibiotics to the environment and human health has raised significant concerns in recent years. The consumption and production of antibiotics in China are the highest in the world due to its rapid economic development and huge population, possibly resulting in the high detection frequencies and concentrations of antibiotics in aquatic environments of China. As a water resource, lakes in China play an important role in sustainable economic and social development. Understanding the current state of antibiotics in lakes in China is important. Closed and semi-closed lakes provide an ideal medium for the accumulation of antibiotics and antibiotic resistance genes (ARGs). This review summarizes the current levels of antibiotic exposure in relevant environmental compartments in lakes. The ecological and health risks of antibiotics are also evaluated. This review concludes that 39 antibiotics have been detected in the aquatic environments of lakes in China. The levels of antibiotic contamination in lakes in China is relatively high on the global scale. Antibiotic contamination is higher in sediment than water and aquatic organisms. Quinolone antibiotics (QNs) pose the greatest risks. The contents of antibiotics in aquatic organisms are far lower than their maximum residual limits (MRLs), with the exception of the organisms in Honghu Lake. The lakes experience high levels of ARG contamination. A greater assessment of ARG presence and antibiotic exposure are urgent.
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Affiliation(s)
- Xiaohui Liu
- School of Environment, Tsinghua University, Beijing 100084, China; State Environmental Protection Scientific Observation and Research Station for Lake Dongting, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Shaoyong Lu
- State Environmental Protection Scientific Observation and Research Station for Lake Dongting, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Wei Guo
- School of Environmental Science and Engineering, North China Electric Power University, Beijing 1002206, China
| | - Beidou Xi
- State Environmental Protection Scientific Observation and Research Station for Lake Dongting, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Weiliang Wang
- School of Geography and Environment, Shandong Normal University, Jinan, Shandong 250358, China
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Mishra NM, Stolarzewicz I, Cannaerts D, Schuermans J, Lavigne R, Looz Y, Landuyt B, Schoofs L, Schols D, Paeshuyse J, Hickenbotham P, Clokie M, Luyten W, Van der Eycken EV, Briers Y. Iterative Chemical Engineering of Vancomycin Leads to Novel Vancomycin Analogs With a High in Vitro Therapeutic Index. Front Microbiol 2018; 9:1175. [PMID: 29930540 PMCID: PMC6001238 DOI: 10.3389/fmicb.2018.01175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/15/2018] [Indexed: 12/11/2022] Open
Abstract
Vancomycin is a glycopeptide antibiotic that inhibits transpeptidation during cell wall synthesis by binding to the D-Ala-D-Ala termini of lipid II. For long, it has been used as a last resort antibiotic. However, since the emergence of the first vancomycin-resistant enterococci in 1987, vancomycin resistance has become widespread, especially in hospitals. We have synthesized and evaluated 110 vancomycin analogs modified at the C-terminal carboxyl group of the heptapeptide moiety with R2NHR1NH2 substituents. Through iterative optimizations of the substituents, we identified vancomycin analogs that fully restore (or even exceed) the original inhibitory activity against vancomycin-resistant enterococci (VRE), vancomycin-intermediate (VISA) and vancomycin-resistant Staphylococcus aureus (VRSA) strains. The best analogs have improved growth inhibitory activity and in vitro therapeutic indices against a broad set of VRE and methicillin-resistant S. aureus (MRSA) isolates. They also exceed the activity of vancomycin against Clostridium difficile ribotypes. Vanc-39 and Vanc-42 have a low probability to provoke antibiotic resistance, and overcome different vancomycin resistance mechanisms (VanA, VanB, and VanC1).
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Affiliation(s)
- Nigam M. Mishra
- Laboratory for Organic and Microwave-Assisted Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Izabela Stolarzewicz
- Laboratory for Organic and Microwave-Assisted Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
- Department of Chemistry, Warsaw University of Life Sciences, Warsaw, Poland
| | - David Cannaerts
- Laboratory for Organic and Microwave-Assisted Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Joris Schuermans
- Laboratory of Gene Technology, Department of Biosystems, KU Leuven, Leuven, Belgium
| | - Rob Lavigne
- Laboratory of Gene Technology, Department of Biosystems, KU Leuven, Leuven, Belgium
| | - Yannick Looz
- Laboratory of Functional Genomics and Proteomics, Department of Biology, KU Leuven, Leuven, Belgium
| | - Bart Landuyt
- Laboratory of Functional Genomics and Proteomics, Department of Biology, KU Leuven, Leuven, Belgium
| | - Liliane Schoofs
- Laboratory of Functional Genomics and Proteomics, Department of Biology, KU Leuven, Leuven, Belgium
| | - Dominique Schols
- Laboratory of Virology and Chemotherapy, Rega Institute, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Jan Paeshuyse
- Laboratory for Host Pathogen Interactions, Department of Biosystems, KU Leuven, Leuven, Belgium
| | - Peter Hickenbotham
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, United Kingdom
| | - Martha Clokie
- Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, United Kingdom
| | - Walter Luyten
- Laboratory of Functional Genomics and Proteomics, Department of Biology, KU Leuven, Leuven, Belgium
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic and Microwave-Assisted Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
- Department of Organic Chemistry, Peoples’ Friendship University of Russia (RUDN University), Moscow, Russia
| | - Yves Briers
- Laboratory of Gene Technology, Department of Biosystems, KU Leuven, Leuven, Belgium
- Laboratory of Applied Biotechnology, Department of Biotechnology, Ghent University, Ghent, Belgium
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Dzhavakhiya VV, Glagoleva EV, Popova ED, Ovchinnikov AI, Skryabin KG, Shobolov DL, Balabanyan VY, Chernobrovkin MG. Development of a New Amycolatopsis orientalis Strain for High-Yield Eremomycin Production. APPL BIOCHEM MICRO+ 2016. [DOI: 10.1134/s0003683817080026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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