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Blackman LD, Sutherland TD, De Barro PJ, Thissen H, Locock KES. Addressing a future pandemic: how can non-biological complex drugs prepare us for antimicrobial resistance threats? MATERIALS HORIZONS 2022; 9:2076-2096. [PMID: 35703580 DOI: 10.1039/d2mh00254j] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Loss of effective antibiotics through antimicrobial resistance (AMR) is one of the greatest threats to human health. By 2050, the annual death rate resulting from AMR infections is predicted to have climbed from 1.27 million per annum in 2019, up to 10 million per annum. It is therefore imperative to preserve the effectiveness of both existing and future antibiotics, such that they continue to save lives. One way to conserve the use of existing antibiotics and build further contingency against resistant strains is to develop alternatives. Non-biological complex drugs (NBCDs) are an emerging class of therapeutics that show multi-mechanistic antimicrobial activity and hold great promise as next generation antimicrobial agents. We critically outline the focal advancements for each key material class, including antimicrobial polymer materials, carbon nanomaterials, and inorganic nanomaterials, and highlight the potential for the development of antimicrobial resistance against each class. Finally, we outline remaining challenges for their clinical translation, including the need for specific regulatory pathways to be established in order to allow for more efficient clinical approval and adoption of these new technologies.
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Affiliation(s)
- Lewis D Blackman
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia.
| | - Tara D Sutherland
- CSIRO Health & Biosecurity, Clunies Ross Street, Black Mountain, ACT 2601, Australia
| | - Paul J De Barro
- CSIRO Health & Biosecurity, Boggo Road, Dutton Park, QLD 4102, Australia
| | - Helmut Thissen
- CSIRO Manufacturing, Research Way, Clayton, VIC 3168, Australia.
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Mondain V, Retur N, Bertrand B, Lieutier-Colas F, Carenco P, Diamantis S. Advocacy for Responsible Antibiotic Production and Use. Antibiotics (Basel) 2022; 11:antibiotics11070980. [PMID: 35884234 PMCID: PMC9311909 DOI: 10.3390/antibiotics11070980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/09/2022] [Accepted: 07/12/2022] [Indexed: 11/26/2022] Open
Abstract
Antibiotic-resistant bacteria have become one of humankind’s major challenges, as testified by the UN’s Call to Action on Antimicrobial Resistance in 2021. Our knowledge of the underlying processes of antibiotic resistance is steadily improving. Beyond the inappropriate use of antimicrobials in human medicine, other causes have been identified, raising ethical issues and requiring an approach to the problem from a “One Health” perspective. Indeed, it is now clear that the two main issues regarding the subject of antibiotics are their misuse in the global food industry and their method of production, both leading to the emergence and spread of bacterial resistance.
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Affiliation(s)
- Véronique Mondain
- Centre Hospitalo-Universitaire de Nice, Service des Maladies Infectieuses et Tropicales, Hôpital Archet 1, 06202 Nice, France
- Correspondence:
| | - Nicolas Retur
- Centre Hospitalo-Universitaire de Nice, Pharmacie, Hôpital Archet 1, 06202 Nice, France;
| | | | - Florence Lieutier-Colas
- AntibioEst, Regional Antibiotic Therapy Centre, Nancy University Hospital, Brabois Hospital, 54511 Vandoeuvre-les-Nancy, France;
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103
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Bellotti D, Remelli M. Lights and Shadows on the Therapeutic Use of Antimicrobial Peptides. Molecules 2022; 27:molecules27144584. [PMID: 35889455 PMCID: PMC9317528 DOI: 10.3390/molecules27144584] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/11/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023] Open
Abstract
The emergence of antimicrobial-resistant infections is still a major concern for public health worldwide. The number of pathogenic microorganisms capable of resisting common therapeutic treatments are constantly increasing, highlighting the need of innovative and more effective drugs. This phenomenon is strictly connected to the rapid metabolism of microorganisms: due to the huge number of mutations that can occur in a relatively short time, a colony can “adapt” to the pharmacological treatment with the evolution of new resistant species. However, the shortage of available antimicrobial drugs in clinical use is also caused by the high costs involved in developing and marketing new drugs without an adequate guarantee of an economic return; therefore, the pharmaceutical companies have reduced their investments in this area. The use of antimicrobial peptides (AMPs) represents a promising strategy for the design of new therapeutic agents. AMPs act as immune defense mediators of the host organism and show a poor ability to induce antimicrobial resistance, coupled with other advantages such as a broad spectrum of activity, not excessive synthetic costs and low toxicity of both the peptide itself and its own metabolites. It is also important to underline that many antimicrobial peptides, due to their inclination to attack cell membranes, have additional biological activities, such as, for example, as anti-cancer drugs. Unfortunately, they usually undergo rapid degradation by proteolytic enzymes and are characterized by poor bioavailability, preventing their extensive clinical use and landing on the pharmaceutical market. This review is focused on the strength and weak points of antimicrobial peptides as therapeutic agents. We give an overview on the AMPs already employed in clinical practice, which are examples of successful strategies aimed at overcoming the main drawbacks of peptide-based drugs. The review deepens the most promising strategies to design modified antimicrobial peptides with higher proteolytic stability with the purpose of giving a comprehensive summary of the commonly employed approaches to evaluate and optimize the peptide potentialities.
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Affiliation(s)
- Denise Bellotti
- Department of Environmental and Prevention Sciences, University of Ferrara, 44121 Ferrara, Italy;
- Faculty of Chemistry, University of Wrocław, 50-383 Wrocław, Poland
| | - Maurizio Remelli
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
- Correspondence:
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A NIR-II emissive polymer AIEgen for imaging-guided photothermal elimination of bacterial infection. Biomaterials 2022; 286:121579. [DOI: 10.1016/j.biomaterials.2022.121579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/04/2022] [Accepted: 05/07/2022] [Indexed: 11/23/2022]
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Zhou J, Wang W, Zhang Q, Zhang Z, Guo J, Yan F. Oxygen-supplied mesoporous carbon nanoparticles for enhanced photothermal/photodynamic synergetic therapy against antibiotic-resistant bacterial infections. Chem Sci 2022; 13:6967-6981. [PMID: 35774158 PMCID: PMC9200222 DOI: 10.1039/d2sc01740g] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/16/2022] [Indexed: 11/21/2022] Open
Abstract
Pandemic and epidemic spread of antibiotic-resistant bacterial infections would result in a huge number of fatalities globally. To combat antibiotic-resistant pathogens, new antimicrobial strategies should be explored and developed to confront bacteria without acquiring or increasing drug-resistance. Here, oxygen saturated perfluorohexane (PFH)-loaded mesoporous carbon nanoparticles (CIL@ICG/PFH@O2) with photothermal therapy (PTT) and enhanced photodynamic therapy (PDT) utility are developed for antibacterial applications. Ionic liquid groups are grafted onto the surface of mesoporous carbon nanoparticles, followed by anion-exchange with the anionic photosensitizer indocyanine green (ICG) and loading oxygen saturated PFH to prepare CIL@ICG/PFH@O2. These CIL@ICG/PFH@O2 nanoparticles exhibit effective PTT and enhanced PDT properties simultaneously upon 808 nm light irradiation. In vitro assays demonstrate that CIL@ICG/PFH@O2 shows a synergistic antibacterial action against antibiotic-resistant pathogens (methicillin-resistant Staphylococcus aureus and kanamycin-resistant Escherichia coli). Moreover, CIL@ICG/PFH@O2 could effectively kill drug-resistant bacteria in vivo to relieve inflammation and eliminate methicillin-resistant Staphylococcus aureus-wound infection under NIR irradiation, and the released oxygen can increase collagen deposition, epithelial tissue formation and blood vessel formation to promote wound healing while enhancing the PDT effect. This study proposes a platform with enhanced PTT/PDT effects for effective, controlled, and precise treatment of topical drug-resistant bacterial infections.
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Affiliation(s)
- Jiamei Zhou
- Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
| | - Wenjie Wang
- Hematology Center, Cyrus Tang Medical Institute, Soochow University Suzhou 215123 China
| | - Qiuyang Zhang
- Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
| | - Zijun Zhang
- Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
| | - Jiangna Guo
- Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
| | - Feng Yan
- Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University Suzhou 215123 China
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Pan Y, Zheng H, Li G, Li Y, Jiang J, Chen J, Xie Q, Wu D, Ma R, Liu X, Xu S, Jiang J, Cai X, Gao M, Wang W, Zuilhof H, Ye M, Li R. Antibiotic-Like Activity of Atomic Layer Boron Nitride for Combating Resistant Bacteria. ACS NANO 2022; 16:7674-7688. [PMID: 35511445 DOI: 10.1021/acsnano.1c11353] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The global rise of antimicrobial resistance (AMR) that increasingly invalidates conventional antibiotics has become a huge threat to human health. Although nanosized antibacterial agents have been extensively explored, they cannot sufficiently discriminate between microbes and mammals, which necessitates the exploration of other antibiotic-like candidates for clinical uses. Herein, two-dimensional boron nitride (BN) nanosheets are reported to exhibit antibiotic-like activity to AMR bacteria. Interestingly, BN nanosheets had AMR-independent antibacterial activity without triggering secondary resistance in long-term use and displayed excellent biocompatibility in mammals. They could target key surface proteins (e.g., FtsP, EnvC, TolB) in cell division, resulting in impairment of Z-ring constriction for inhibition of bacteria growth. Notably, BN nanosheets had potent antibacterial effects in a lung infection model by P. aeruginosa (AMR), displaying a 2-fold increment of survival rate. Overall, these results suggested that BN nanosheets could be a promising nano-antibiotic to combat resistant bacteria and prevent AMR evolution.
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Affiliation(s)
- Yanxia Pan
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Huizhen Zheng
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Guanna Li
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, Wageningen 6703 WE, The Netherlands
- Biobased Chemistry and Technology, Wageningen University, P.O. Box 17, Wageningen 6700 AA, The Netherlands
| | - Yanan Li
- CAS Key Lab of Separation Sciences for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jie Jiang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Jie Chen
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Qianqian Xie
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Di Wu
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Ronglin Ma
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Xi Liu
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Shujuan Xu
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Jun Jiang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Xiaoming Cai
- School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Meng Gao
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Weili Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, Wageningen 6703 WE, The Netherlands
- Department of Chemical and Materials Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mingliang Ye
- CAS Key Lab of Separation Sciences for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ruibin Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou 215123, Jiangsu, China
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Surpeta B, Grulich M, Palyzová A, Marešová H, Brezovsky J. Common Dynamic Determinants Govern Quorum Quenching Activity in N-Terminal Serine Hydrolases. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bartlomiej Surpeta
- Laboratory of Biomolecular Interactions and Transport, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 6, 61-614 Poznan, Poland
- International Institute of Molecular and Cell Biology in Warsaw, Ks Trojdena 4, 02-109 Warsaw, Poland
| | - Michal Grulich
- Laboratory of Modulation of Gene Expression, Institute of Microbiology,v.v.i., Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic
| | - Andrea Palyzová
- Laboratory of Molecular Structure Characterization, Institute of Microbiology,v.v.i., Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic
| | - Helena Marešová
- Laboratory of Molecular Structure Characterization, Institute of Microbiology,v.v.i., Academy of Sciences of the Czech Republic, Videnska 1083, 142 20 Prague 4, Czech Republic
| | - Jan Brezovsky
- Laboratory of Biomolecular Interactions and Transport, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznanskiego 6, 61-614 Poznan, Poland
- International Institute of Molecular and Cell Biology in Warsaw, Ks Trojdena 4, 02-109 Warsaw, Poland
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Abstract
Antimicrobial resistance (AMR) represents a significant source of morbidity and mortality worldwide, with expectations that AMR-associated consequences will continue to worsen throughout the coming decades. Since resistance to antibiotics is encoded in the microbiome, interventions aimed at altering the taxonomic composition of the gut might allow us to prophylactically engineer microbiomes that harbor fewer antibiotic resistant genes (ARGs). Diet is one method of intervention, and yet little is known about the association between diet and antimicrobial resistance. To address this knowledge gap, we examined diet using the food frequency questionnaire (FFQ; habitual diet) and 24-h dietary recalls (Automated Self-Administered 24-h [ASA24®] tool) coupled with an analysis of the microbiome using shotgun metagenome sequencing in 290 healthy adult participants of the United States Department of Agriculture (USDA) Nutritional Phenotyping Study. We found that aminoglycosides were the most abundant and prevalent mechanism of AMR in these healthy adults and that aminoglycoside-O-phosphotransferases (aph3-dprime) correlated negatively with total calories and soluble fiber intake. Individuals in the lowest quartile of ARGs (low-ARG) consumed significantly more fiber in their diets than medium- and high-ARG individuals, which was concomitant with increased abundances of obligate anaerobes, especially from the family Clostridiaceae, in their gut microbiota. Finally, we applied machine learning to examine 387 dietary, physiological, and lifestyle features for associations with antimicrobial resistance, finding that increased phylogenetic diversity of diet was associated with low-ARG individuals. These data suggest diet may be a potential method for reducing the burden of AMR. IMPORTANCE Antimicrobial resistance (AMR) represents a considerable burden to health care systems, with the public health community largely in consensus that AMR will be a major cause of death worldwide in the coming decades. Humans carry antibiotic resistance in the microbes that live in and on us, collectively known as the human microbiome. Diet is a powerful method for shaping the human gut microbiome and may be a tractable method for lessening antibiotic resistance, and yet little is known about the relationship between diet and AMR. We examined this relationship in healthy individuals who contained various abundances of antibiotic resistance genes and found that individuals who consumed diverse diets that were high in fiber and low in animal protein had fewer antibiotic resistance genes. Dietary interventions may be useful for lessening the burden of antimicrobial resistance and might ultimately motivate dietary guidelines which will consider how nutrition can reduce the impact of infectious disease.
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Wan P, Guo W, Duan Y, Deng M, Xiao C. Photosensitizer-Polypeptides Conjugate with Synergistic Antibacterial Efficacy. Macromol Biosci 2022; 22:e2200105. [PMID: 35526119 DOI: 10.1002/mabi.202200105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/23/2022] [Indexed: 11/08/2022]
Abstract
Recently, continuous emergence of resistant bacteria has appeared as one of the most serious threats to human health. Therefore, systematic exploration of new antibacterial materials is of guiding significance. In this study, a series of photosensitizer-polypeptides conjugate (PPa-cP) was readily synthesized through the simple ring-opening reactions to realize the synergistic antibacterial effects toward Staphylococcus aureus (S. aureus) and methicillin-resistant Staphylococcus aureus (MRSA) under light irradiation. Compared with free PPa, the cationic PPa-cP showed enhanced binding ability with the negative surface of S. aureus through electrostatic interaction, exhibiting effective antibacterial activity against both S. aureus and MRSA in vitro under light irradiation. Among the synthesized PPa-cP, PPa-cP5 with the degree of polymerization of 37 and modified with 1-methylimidazole side group exhibited the best antibacterial activity with a minimum inhibitory concentration (MIC) value of 2 μM without light irradiation and 0.25 μM with light irradiation. Moreover, PPa-cP5 showed good hemocompatibility. The above-mentioned results elucidate that the positively charged PPa-cP5 could significantly increase the efficiency of photodynamic therapy and effectively eradicate S. aureus biofilm due to its potent penetration ability into S. aureus biofilms. Overall, the present study establishes an efficient strategy for treatment of S. aureus and S. aureus biofilm infections. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Pengqi Wan
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.,Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Wei Guo
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.,Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yuxiu Duan
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China.,Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Mingxiao Deng
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.,Jilin Biomedical Polymers Engineering Laboratory, Changchun, 130022, P. R. China
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Qin S, Xie M, Cao S, Li J, Wang L, Luo S, Lv M. Insight into the antibacterial resistance of graphdiyne functionalized by silver nanoparticles. Cell Prolif 2022; 55:e13236. [PMID: 35502645 PMCID: PMC9136490 DOI: 10.1111/cpr.13236] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 04/02/2022] [Accepted: 04/06/2022] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES Silver nanoparticles (AgNPs) tend to aggregate spontaneously due to larger surface-to-volume ratio, which causes decreased antibacterial activity and even enhanced antimicrobial resistance (AMR). Here, we aim to improve the stability of AgNPs by employing a growth anchor graphdiyne (GDY) to overcome these shortcomings. MATERIALS AND METHODS Bacillus subtilis and Escherichia coli were selected to represent gram-positive and gram-negative bacteria, respectively. Transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM)-EDS mapping and inductively coupled plasma mass spectrometry (ICP-MS) were carried out to characterize the physiochemical properties of materials. The antimicrobial property was determined by turbidimetry and plate colony-counting methods. The physiology of bacteria was detected by SEM and confocal imaging, such as morphology, reactive oxygen species (ROS) and cell membrane. RESULTS We successfully synthesized a hybrid graphdiyne @ silver nanoparticles (GDY@Ag) by an environment-friendly approach without any reductants. The hybrid showed high stability and excellent broad-spectrum antibacterial activity towards both gram-positive and gram-negative bacteria. It killed bacteria through membrane destruction and ROS production. Additionally, GDY@Ag did not induce the development of the bacterial resistance after repeated exposure. CONCLUSIONS GDY@Ag composite combats bacteria by synergetic action of GDY and AgNPs. Especially, GDY@Ag can preserve its bacterial susceptibility after repeated exposure compared to antibiotics. Our findings provide an avenue to design innovative antibacterial agents for effective sterilization.
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Affiliation(s)
- Simin Qin
- Division of Physical Biology, CAS Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied Physics, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Mo Xie
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts and TelecommunicationsNanjingChina
| | - Shuting Cao
- Division of Physical Biology, CAS Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied Physics, Chinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Jiang Li
- Division of Physical Biology, CAS Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied Physics, Chinese Academy of SciencesShanghaiChina
- The Interdisciplinary Research Center, Shanghai Synchrotron Radiation Facility, Zhangjiang LaboratoryShanghai Advanced Research Institute, Chinese Academy of SciencesShanghaiChina
| | - Lihua Wang
- Division of Physical Biology, CAS Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied Physics, Chinese Academy of SciencesShanghaiChina
- The Interdisciplinary Research Center, Shanghai Synchrotron Radiation Facility, Zhangjiang LaboratoryShanghai Advanced Research Institute, Chinese Academy of SciencesShanghaiChina
| | - Shi‐Hua Luo
- Department of Traumatology, Rui Jin Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Min Lv
- The Interdisciplinary Research Center, Shanghai Synchrotron Radiation Facility, Zhangjiang LaboratoryShanghai Advanced Research Institute, Chinese Academy of SciencesShanghaiChina
- College of Chemistry and Materials ScienceShanghai Normal UniversityShanghaiChina
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Belotindos LP, Tsunoda R, Villanueva MA, Nakajima C, Mingala CN, Suzuki Y. Characterisation of plasmids harbouring qnrA1, qnrS1, and qnrB4 in E. coli isolated in the Philippines from food-producing animals and their products. J Glob Antimicrob Resist 2022; 30:38-46. [PMID: 35447382 DOI: 10.1016/j.jgar.2022.04.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 03/19/2022] [Accepted: 04/11/2022] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVES Determinants showing plasmid-mediated quinolone resistance, which usually leads to antimicrobial ineffectiveness, have become an emerging clinical problem. In our previous study in the Philippines, a high prevalence of Qnr determinants was found in clinical samples and food-producing animals and their food products. However, no qnr-carrying plasmids have been investigated in animals or animal-derived foods. Hence, in the present, we aimed to characterise qnr-carrying plasmids in Escherichia coli isolated from the food supply chain. METHODS Plasmids from 44 qnr-positive isolates were assigned to incompatibility groups by PCR-based replicon typing, and the presence of β-lactamase-encoding genes were investigated by PCR. Localisation of qnr in plasmids was determined by S1-PFGE and Southern blot hybridisation. The transferability of qnr-carrying plasmids was examined by conjugation analysis. RESULTS Overall, 77.3% (95%CI = 62.2 - 88.5) of the isolates harbouring qnr determinants were positive for seven plasmid types, and 56.8% concurrently harboured blaTEM-1. Plasmid IncFrepB was prevalent (65.9%, 95%CI = 50.1 - 79.5) among qnr determinants. Localisation of qnr determinants in IncFrepB and transferability of plasmids was further confirmed. CONCLUSIONS The current study proved that qnr in E. coli isolated from food-producing animals and their food products could spread via plasmid IncFrepB upon selective pressure with quinolones or other antimicrobials. Therefore, to curb the emergence and spread of qnr-harbouring bacteria in the Philippines, prudent use of antimicrobials in animal production and stricter hygiene and food handling are recommended.
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Affiliation(s)
- Lawrence P Belotindos
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan; Biosafety and Environment Section, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines.
| | - Risa Tsunoda
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan.
| | - Marvin A Villanueva
- Biosafety and Environment Section, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines.
| | - Chie Nakajima
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan; International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo 001-0021, Japan.
| | - Claro N Mingala
- Livestock Biotechnology Center, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines.
| | - Yasuhiko Suzuki
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan; International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo 001-0021, Japan.
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Rombach I, Wang K, Tonner S, Grabey J, Harnden A, Wolstenholme J. Quality of life, healthcare use and costs in 'at-risk' children after early antibiotic treatment versus placebo for influenza-like illness: within-trial descriptive economic analyses of the ARCHIE randomised controlled trial. BMJ Open 2022; 12:e049373. [PMID: 35428613 PMCID: PMC9014043 DOI: 10.1136/bmjopen-2021-049373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES To characterise the quality of life, healthcare use and costs associated with early antibiotic treatment of influenza-like illness (ILI) in 'at-risk' children. DESIGN Economic analysis of a two-arm double-blind parallel group pragmatic randomised controlled trial. SETTING Children were recruited from community-based healthcare settings, including general practices, walk-in centres and hospital ambulatory care. PARTICIPANTS Children with risk factors for influenza-related complications, including respiratory, cardiac and neurological conditions, who presented within the first 5 days of an ILI. INTERVENTIONS Co-amoxiclav 400/57 suspension or placebo. OUTCOME MEASURES This economic analysis focused on quality of life measured by the EQ-5D-Y, symptoms assessed by the Canadian Acute Respiratory Infection and Flu Scale (CARIFS), healthcare use and costs including medication, hospital visits and admissions, general practitioner and nurse contacts. Outcomes were assessed for up to 28 days post randomisation. RESULTS Information on resource use, EQ-5D-Y (day 28) and CARIFS (day 7) was available for 265 (98%), 72 (27%) and 123 (45%) out of 271 participants, respectively. Average costs in the co-amoxiclav group were £25 lower (95% CI -£113 to £65), but this difference was not statistically significant (p=0.566). The difference in EQ-5D-Y scores between groups was also not statistically significant (-0.014 (95% CI -0.124 to 0.096), p=0.798). However, day 7 CARIFS scores were 3.5 points lower in the co-amoxiclav arm (95% CI -6.9 to -0.1, p=0.044). CONCLUSIONS Our findings did not show evidence that early co-amoxiclav treatment improves quality of life or reduces healthcare use and costs in 'at-risk' children with ILI, but may reduce symptom severity though confirmation from further research would be important. Reliable data collection from children's parents/carers was challenging, and resulted in high levels of missing data, which is common in pragmatic trials involving children with acute respiratory tract infections. TRIAL REGISTRATION NUMBER ISRCTN70714783; EudraCT 2013-002822-21.
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Affiliation(s)
- Ines Rombach
- Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Kay Wang
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Sharon Tonner
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Jenna Grabey
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Anthony Harnden
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Jane Wolstenholme
- Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK
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113
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Yang MR, Wu YW. Enhancing predictions of antimicrobial resistance of pathogens by expanding the potential resistance gene repertoire using a pan-genome-based feature selection approach. BMC Bioinformatics 2022; 23:131. [PMID: 35428201 PMCID: PMC9011928 DOI: 10.1186/s12859-022-04666-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 04/04/2022] [Indexed: 11/10/2022] Open
Abstract
Background Predicting which pathogens might exhibit antimicrobial resistance (AMR) based on genomics data is one of the promising ways to swiftly and precisely identify AMR pathogens. Currently, the most widely used genomics approach is through identifying known AMR genes from genomic information in order to predict whether a pathogen might be resistant to certain antibiotic drugs. The list of known AMR genes, however, is still far from comprehensive and may result in inaccurate AMR pathogen predictions. We thus felt the need to expand the AMR gene set and proposed a pan-genome-based feature selection method to identify potential gene sets for AMR prediction purposes. Results By building pan-genome datasets and extracting gene presence/absence patterns from four bacterial species, each with more than 2000 strains, we showed that machine learning models built from pan-genome data can be very promising for predicting AMR pathogens. The gene set selected by the eXtreme Gradient Boosting (XGBoost) feature selection approach further improved prediction outcomes, and an incremental approach selecting subsets of XGBoost-selected features brought the machine learning model performance to the next level. Investigating selected gene sets revealed that on average about 50% of genes had no known function and very few of them were known AMR genes, indicating the potential of the selected gene sets to expand resistance gene repertoires. Conclusions We demonstrated that a pan-genome-based feature selection approach is suitable for building machine learning models for predicting AMR pathogens. The extracted gene sets may provide future clues to expand our knowledge of known AMR genes and provide novel hypotheses for inferring bacterial AMR mechanisms. Supplementary Information The online version contains supplementary material available at 10.1186/s12859-022-04666-2.
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114
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Chen C, Oelschlaeger P, Wang D, Xu H, Wang Q, Wang C, Zhao A, Yang KW. Structure and Mechanism-Guided Design of Dual Serine/Metallo-Carbapenemase Inhibitors. J Med Chem 2022; 65:5954-5974. [PMID: 35420040 DOI: 10.1021/acs.jmedchem.2c00213] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Serine/metallo-carbapenemase-coproducing pathogens, often referred to as "superbugs", are a significant clinical problem. They hydrolyze nearly all available β-lactam antibiotics, especially carbapenems considered as last-resort antibiotics, seriously endangering efficacious antibacterial treatment. Despite the continuous global spread of carbapenem resistance, no dual-action inhibitors are available in therapy. This Perspective is the first systematic investigation of all chemotypes, modes of inhibition, and crystal structures of dual serine/metallo-carbapenemase inhibitors. An overview of the key strategy for designing dual serine/metallo-carbapenemase inhibitors and their mechanism of action is provided, as guiding rules for the development of clinically available dual inhibitors, coadministrated with carbapenems, to overcome the carbapenem resistance issue.
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Affiliation(s)
- Cheng Chen
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
| | - Peter Oelschlaeger
- Department of Pharmaceutical Sciences, College of Pharmacy, Western University of Health Sciences, 309 East Second Street, Pomona 91766, California, United States
| | - Dongmei Wang
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
| | - Hao Xu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310030, P. R. China
| | - Qian Wang
- Department of Clinical Laboratory, The First Affiliated Hospital of Henan University of Chinese Medicine, Jinshui District 450046, Zhengzhou, P. R. China
| | - Cheng Wang
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
| | - Aiguo Zhao
- College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, P. R. China
| | - Ke-Wu Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P. R. China
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115
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Najem S, Eick D, Boettcher J, Aigner A, Aboutara M, Fenner I, Reinshagen K, Koenigs I. High prevalence of multidrug-resistant Gram-negative bacteria carriage in children screened prospectively for multidrug resistant organisms at admission to a paediatric hospital, Hamburg, Germany, September 2018 to May 2019. Euro Surveill 2022; 27. [PMID: 35426366 PMCID: PMC9012092 DOI: 10.2807/1560-7917.es.2022.27.15.2001567] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Background
Increasing resistance to antibiotics poses medical challenges worldwide. Prospective data on carriage prevalence of multidrug resistant organisms (MDRO) in children at hospital admission are limited and associated risk factors are poorly defined.
Aim
To determine prevalence of MDRO carriage in children at admission to our paediatric hospital in Hamburg and to identify MDRO carriage risk factors.
Methods
We prospectively obtained and cultured nasal/throat and inguinal/anal swabs from children (≤ 18 years) at admission between September 2018 and May 2019 to determine prevalence of meticillin-resistant Staphylococcus aureus (MRSA), multidrug-resistant Gram-negative bacteria (MRGN) and vancomycin-resistant enterococcus (VRE) and associated species. We collected medical histories using a questionnaire and evaluated 31 risk factors using logistic regression models.
Results
MDRO carriage prevalence of 3,964 children was 4.31% (95% confidence interval (CI): 3.69–5.00). MRSA carriage prevalence was 0.68% (95% CI: 0.44–0.99), MRGN prevalence was 3.64% (95% CI: 3.07–4.28) and VRE prevalence 0.08% (95% CI: 0.02–0.22). MDRO carriage was associated with MRGN history (odds ratio (OR): 6.53; 95% CI: 2.58–16.13), chronic condition requiring permanent care (OR: 2.67; 95% CI: 1.07–6.13), antibiotic therapy (OR: 1.92, 95% CI: 1.24–2.94), living in a care facility (OR: 3.34; 95% CI: 0.72–12.44) and refugee status in previous 12 months (OR: 1.91; 95% CI: 0.27–8.02). Compared to established practice, screening using risk-factors had better diagnostic sensitivity (86.13%; 95% CI: 80.89–91.40) and specificity (73.54%; 95% CI: 72.12–74.97).
Conclusion
MRGN carriage was higher than MRSA and VRE. Extended risk-factor-based admission screening system seems warranted.
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Affiliation(s)
- Safiullah Najem
- Department of Paediatric Surgery, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- Department of Paediatric Surgery, Altona Children's Hospital, Hamburg, Germany
| | - Dorothée Eick
- Department of Paediatric Surgery, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- Department of Paediatric Surgery, Altona Children's Hospital, Hamburg, Germany
| | - Johannes Boettcher
- Department of Child and Adolescent Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Annette Aigner
- Institute of Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Institute of Biometry and Clinical Epidemiology, Charité – Universitaetsmedizin Berlin, Berlin, Germany
| | - Mona Aboutara
- Department of General Paediatrics, Altona Children's Hospital, Hamburg, Germany
| | - Ines Fenner
- Laboratory Dr. Fenner and colleagues, Hamburg, Germany
| | - Konrad Reinshagen
- Department of Paediatric Surgery, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- Department of Paediatric Surgery, Altona Children's Hospital, Hamburg, Germany
| | - Ingo Koenigs
- Department of Paediatric Surgery, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
- Department of Paediatric Surgery, Altona Children's Hospital, Hamburg, Germany
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116
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Cai Z, Chen B, Yu Y, Guo J, Luo Z, Cheng B, Xu J, Gu Q, Zhou H. Design, Synthesis, and Proof-of-Concept of Triple-Site Inhibitors against Aminoacyl-tRNA Synthetases. J Med Chem 2022; 65:5800-5820. [PMID: 35363470 DOI: 10.1021/acs.jmedchem.2c00134] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Aminoacyl-tRNA synthetases (aaRSs) are promising drug targets due to their essential roles in protein translation. Although current inhibitors primarily occupy one or two of the three substrate binding sites on aaRSs, we report here the structure-based design of the first class of triple-site aaRS inhibitors by targeting Salmonella enterica threonyl-tRNA synthetase (SeThrRS). Competition of our compounds with all three substrates on SeThrRS binding was confirmed via isothermal titration calorimetry assays. Cocrystal structures of three compounds bound to SeThrRS unambiguously confirmed their substrate-mimicking triple-site binding mode. Compound 36j exhibited the best enzyme activity against SeThrRS with IC50 = 19 nM and Kd = 35.4 nM. Compounds 36b, 36k, and 36l exhibited antibacterial activities with minimum inhibitory concentration values of 2-8 μg/mL against the tested bacteria, which are superior to those of the reported dual-site ThrRS inhibitors. Our study provides the first proof-of-concept for developing triple-site inhibitors against aaRSs, inspiring future aaRS-based drug discoveries.
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Affiliation(s)
- Zhengjun Cai
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.,Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Bingyi Chen
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.,Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Ying Yu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.,Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Junsong Guo
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.,Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Zhiteng Luo
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.,Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Bao Cheng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.,Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Jun Xu
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Qiong Gu
- Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Huihao Zhou
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China.,Research Center for Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
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117
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Zha L, Xie Y, Wu C, Lei M, Lu X, Tang W, Zhang J. Novel benzothiazole‒urea hybrids: Design, synthesis and biological activity as potent anti-bacterial agents against MRSA. Eur J Med Chem 2022; 236:114333. [PMID: 35397402 DOI: 10.1016/j.ejmech.2022.114333] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/19/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022]
Abstract
Novel benzothiazole‒urea hybrids were designed, synthesized and evaluated their anti-bacterial activity. They only exhibited anti-bacterial activity against Gram-positive bacteria, including clinical methicillin-resistant S. aureus (MRSA), compounds 5f, 5i, 8e, 8k and 8l exhibited potent activity (MIC = 0.39 and 0.39/0.78 μM against SA and MRSA, respectively). Crystal violet assay showed that compounds 5f, 8e and 8l not only inhibited the formation of biofilms but also eradicated preformed biofilms. Compound 8l had membrane disruption, little propensity to induce resistance, benign safety and in vivo anti-MRSA efficacy in a mouse model of abdominal infection. Therefore, our data demonstrated the potential to advance benzothiazole‒urea hybrids as a new class of antibiotics.
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Affiliation(s)
- Liang Zha
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
| | - Yunfeng Xie
- School of Medicine, Anhui University of Science and Technology, Huainan, 232001, China
| | - Chengyao Wu
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
| | - Ming Lei
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China
| | - Xueer Lu
- School of Medicine, Anhui University of Science and Technology, Huainan, 232001, China
| | - Wenjian Tang
- School of Pharmacy, Anhui Medical University, Hefei, 230032, China.
| | - Jing Zhang
- Anhui Prevention and Treatment Center for Occupational Disease, Anhui No. 2 Provincial People's Hospital, Hefei, 230022, China.
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118
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Gold B, Zhang J, Quezada LL, Roberts J, Ling Y, Wood M, Shinwari W, Goullieux L, Roubert C, Fraisse L, Bacqué E, Lagrange S, Filoche-Rommé B, Vieth M, Hipskind PA, Jungheim LN, Aubé J, Scarry SM, McDonald SL, Li K, Perkowski A, Nguyen Q, Dartois V, Zimmerman M, Olsen DB, Young K, Bonnett S, Joerss D, Parish T, Boshoff HI, Arora K, Barry CE, Guijarro L, Anca S, Rullas J, Rodríguez-Salguero B, Martínez-Martínez MS, Porras-De Francisco E, Cacho M, Barros-Aguirre D, Smith P, Berthel SJ, Nathan C, Bates RH. Identification of β-Lactams Active against Mycobacterium tuberculosis by a Consortium of Pharmaceutical Companies and Academic Institutions. ACS Infect Dis 2022; 8:557-573. [PMID: 35192346 PMCID: PMC8922279 DOI: 10.1021/acsinfecdis.1c00570] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Indexed: 11/28/2022]
Abstract
Rising antimicrobial resistance challenges our ability to combat bacterial infections. The problem is acute for tuberculosis (TB), the leading cause of death from infection before COVID-19. Here, we developed a framework for multiple pharmaceutical companies to share proprietary information and compounds with multiple laboratories in the academic and government sectors for a broad examination of the ability of β-lactams to kill Mycobacterium tuberculosis (Mtb). In the TB Drug Accelerator (TBDA), a consortium organized by the Bill & Melinda Gates Foundation, individual pharmaceutical companies collaborate with academic screening laboratories. We developed a higher order consortium within the TBDA in which four pharmaceutical companies (GlaxoSmithKline, Sanofi, MSD, and Lilly) collectively collaborated with screeners at Weill Cornell Medicine, the Infectious Disease Research Institute (IDRI), and the National Institute of Allergy and Infectious Diseases (NIAID), pharmacologists at Rutgers University, and medicinal chemists at the University of North Carolina to screen ∼8900 β-lactams, predominantly cephalosporins, and characterize active compounds. In a striking contrast to historical expectation, 18% of β-lactams screened were active against Mtb, many without a β-lactamase inhibitor. One potent cephaloporin was active in Mtb-infected mice. The steps outlined here can serve as a blueprint for multiparty, intra- and intersector collaboration in the development of anti-infective agents.
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Affiliation(s)
- Ben Gold
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Jun Zhang
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Landys Lopez Quezada
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Julia Roberts
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Yan Ling
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Madeleine Wood
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Wasima Shinwari
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Laurent Goullieux
- Sanofi,
Infectious Diseases Therapeutic Area, 69280 Marcy l’Étoile, France
- Evotec
(Lyon) SAS, 69007 Lyon, France
| | - Christine Roubert
- Sanofi,
Infectious Diseases Therapeutic Area, 69280 Marcy l’Étoile, France
- Evotec
(Lyon) SAS, 69007 Lyon, France
| | - Laurent Fraisse
- Sanofi,
Infectious Diseases Therapeutic Area, 69280 Marcy l’Étoile, France
| | - Eric Bacqué
- Sanofi,
Infectious Diseases Therapeutic Area, 69280 Marcy l’Étoile, France
- Evotec
(Lyon) SAS, 69007 Lyon, France
| | - Sophie Lagrange
- Sanofi,
Infectious Diseases Therapeutic Area, 69280 Marcy l’Étoile, France
- Evotec
(Lyon) SAS, 69007 Lyon, France
| | | | - Michal Vieth
- Lilly
Biotechnology Center, Eli Lilly and Company, 10290 Campus Point Dr, San Diego, California 92121, United States
| | - Philip A. Hipskind
- Lilly
Research Laboratories, Lilly Corporate Center, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
| | - Louis N. Jungheim
- YourEncore, 20 North Meridian Street, Indianapolis, Indiana 46204, United States
| | - Jeffrey Aubé
- Division
of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of
Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Sarah M. Scarry
- Division
of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of
Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Stacey L. McDonald
- Division
of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of
Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Kelin Li
- Division
of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of
Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Andrew Perkowski
- Division
of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of
Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Quyen Nguyen
- Division
of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of
Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Véronique Dartois
- Public
Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey 07103, United States
| | - Matthew Zimmerman
- Public
Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey 07103, United States
| | - David B. Olsen
- Merck
& Co., Inc., Infectious Diseases, 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
| | - Katherine Young
- Merck
& Co., Inc., Infectious Diseases, 770 Sumneytown Pike, West Point, Pennsylvania 19486, United States
| | - Shilah Bonnett
- TB
Discovery Research, Infectious Disease Research
Institute, 1616 Eastlake Ave E, Suite 400, Seattle, Washington 98102, United States
| | - Douglas Joerss
- TB
Discovery Research, Infectious Disease Research
Institute, 1616 Eastlake Ave E, Suite 400, Seattle, Washington 98102, United States
| | - Tanya Parish
- TB
Discovery Research, Infectious Disease Research
Institute, 1616 Eastlake Ave E, Suite 400, Seattle, Washington 98102, United States
| | - Helena I. Boshoff
- Tuberculosis Research Section, Laboratory
of Clinical Immunology and Microbiology, Bethesda, Maryland 20892, United States
| | - Kriti Arora
- Tuberculosis Research Section, Laboratory
of Clinical Immunology and Microbiology, Bethesda, Maryland 20892, United States
| | - Clifton E. Barry
- Tuberculosis Research Section, Laboratory
of Clinical Immunology and Microbiology, Bethesda, Maryland 20892, United States
| | - Laura Guijarro
- Global Health Pharma R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, Madrid 28760, Spain
| | - Sara Anca
- Global Health Pharma R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, Madrid 28760, Spain
| | - Joaquín Rullas
- Global Health Pharma R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, Madrid 28760, Spain
| | | | | | | | - Monica Cacho
- Global Health Pharma R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, Madrid 28760, Spain
| | - David Barros-Aguirre
- Global Health Pharma R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, Madrid 28760, Spain
| | - Paul Smith
- Independent Consultant, Global Health Pharma R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, Madrid 28760, Spain
| | - Steven J. Berthel
- Panorama Global, 2101
4th Avenue, Suite 2100, Seattle, Washington 98121, United States
| | - Carl Nathan
- Department
of Microbiology & Immunology, Weill
Cornell Medicine, 413 East 69th Street, New York, New York 10021, United
States
| | - Robert H. Bates
- Global Health Pharma R&D, GlaxoSmithKline, Severo Ochoa 2, Tres Cantos, Madrid 28760, Spain
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119
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Zhou X, Zhang S, Liu Y, Meng J, Wang M, Sun Y, Xia L, He Z, Hu W, Ren L, Chen Z, Zhang X. Antibacterial Cascade Catalytic Glutathione-Depleting MOF Nanoreactors. ACS APPLIED MATERIALS & INTERFACES 2022; 14:11104-11115. [PMID: 35199514 DOI: 10.1021/acsami.1c24231] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanozymes with peroxidase-like activity have great application potential in combating pathogenic bacterial infections and are expected to become an alternative to antibiotics. However, the near-neutral pH and high glutathione (GSH) levels in the bacterial infection microenvironment severely limit their applications in antibacterial therapy. In this work, a metal-organic framework (MOF)-based cascade catalytic glutathione-depleting system named MnFe2O4@MIL/Au&GOx (MMAG) was constructed. The MMAG cascade-catalyzed glucose to provide H+ and produces a large amount of toxic reactive oxygen species. In addition, MMAG consumed GSH, which can result in bacterial death more easily. Systematic antibacterial experiments illustrated that MMAG has superior antibacterial effects on both Gram-positive bacteria and Gram-negative bacteria.
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Affiliation(s)
- Xi Zhou
- Department of Biomaterials, The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Shuai Zhang
- Department of Biomaterials, The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yan Liu
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Jiashen Meng
- School of Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Muxue Wang
- Department of Biomaterials, The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yaoji Sun
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance Research, School of Electronic Science and Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Linbo Xia
- Department of Biomaterials, The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Zhaozhi He
- Department of Biomaterials, The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Wenxin Hu
- Harvard College, Harvard University, 209 Dunster Mail Center, 945 Memorial Drive, Cambridge, Massachusetts 02138, United States
| | - Lei Ren
- Department of Biomaterials, The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, Research Center of Biomedical Engineering of Xiamen, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
| | - Zhiwei Chen
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance Research, School of Electronic Science and Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xingcai Zhang
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
- School of Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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Singh J, Hegde PB, Avasthi S, Sen P. Scalable Hybrid Antibacterial Surfaces: TiO 2 Nanoparticles with Black Silicon. ACS OMEGA 2022; 7:7816-7824. [PMID: 35284710 PMCID: PMC8908539 DOI: 10.1021/acsomega.1c06706] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
With the increase of drug resistance, there is a need for surface coatings that inhibit microbes without antibiotics. Nanostructured photocatalysts, like TiO2-coated nanotubes, are promising alternatives to antibiotics. Nanostructures rupture the cell wall by impaling the bacteria. Photocatalysts generate reactive oxygen species (ROS) in the presence of light, which oxidize organic matter. The combined effect of photocatalysts and nanostructures is better than the addition of individual components, as nanostructures also enhance the ROS production by trapping light. The synergetic effect is remarkably effective in reducing the growth of bacterial colonies, but scalability still remains a challenge. Conventional techniques like atomic layer deposition (ALD) are excellent for proof of concept but are not scalable to hundreds of square meters, as needed for practical applications. This report demonstrates two scalable and cost-effective techniques for synthesizing photocatalytic nanostructures: spray- and spin-coating TiO2 nanoparticles. Unlike ALD, spray- and spin-coated TiO2 nanoparticles do not reduce the roughness of a structured surface, which improves antibacterial performance by 23%. Integration of nanostructures with spray-coated TiO2 is potentially a low-cost and scalable technology for large-area antibacterial surfaces.
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121
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Roope LS. The economic challenges of new drug development. J Control Release 2022; 345:275-277. [PMID: 35306118 PMCID: PMC8926434 DOI: 10.1016/j.jconrel.2022.03.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 03/12/2022] [Indexed: 11/26/2022]
Abstract
The COVID-19 pandemic has witnessed highly successful efforts to produce effective vaccines and treatments at an unprecedented pace. This perspective discusses factors that made this possible, from long-term investments in research infrastructure to major government interventions that absorbed much of the risk from research and development. We discuss key economic obstacles in the discovery of new drugs for infectious diseases, from novel antibiotics to diseases that primarily affect the poor. The world's collective experience of the pandemic may present an opportunity to reform traditional economic models of drug discovery to better address unmet needs. A tax-funded global institution could provide incentives for drug discovery based on their global health impact. International co-operation would be needed to agree and commit to adequate funding mechanisms, and the necessary political will would require strong public support. With the current heightened appreciation of the need for global health system resilience, there may be no better opportunity than now.
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Yan X, Ma J, Chen X, Lei M, Li T, Han Y. Characteristics of airborne bacterial communities and antibiotic resistance genes under different air quality levels. ENVIRONMENT INTERNATIONAL 2022; 161:107127. [PMID: 35180669 DOI: 10.1016/j.envint.2022.107127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/05/2022] [Accepted: 01/29/2022] [Indexed: 06/14/2023]
Abstract
Pathogenic bacteria and antibiotic resistance genes (ARGs) in bioaerosols are major threats to human health. In this study, the microbial community structure and ARG distribution characteristics of airborne bacteria in total suspended particulates (TSP) and PM2.5 were investigated under different air quality levels in Xinxiang, Central China. The results revealed that with the deterioration of air quality, the concentrations of airborne bacteria in both TSP and PM2.5 decreased; however, the relative amounts of pathogenic bacteria increased. The predominant genera in pathogenic bacteria of Bacillus, Sphingomonas, Corynebacterium, Rhodococcus, and Staphylococcus were identified in both TSP and PM2.5. Although the airborne bacteria concentrations and absolute abundances of ARGs in TSP were higher than those in PM2.5 under identical air quality conditions, the bacterial community structure and relative amounts of pathogenic bacteria were similar. In addition, the relationship between environmental factors of ions, metal elements, and meteorological parameters and the community structures of airborne bacteria and pathogenic bacteria were also analyzed. The effects of soluble ions and metal elements on several dominant genera of total bacteria and pathogenic bacteria differed, probably due to the strong tolerance of pathogenic bacteria to harsh atmospheric environments Different subtypes of ARGs showed various distribution characteristics with variations in air quality. The deterioration of air quality can inhibit the dissemination of ARGs, as the minimum values of all ARGs and class 1 integrase intI1 were observed under Severely Polluted conditions. This study provides a comprehensive understanding of the effect of air pollution levels on the airborne bacteria community composition and ARG distribution.
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Affiliation(s)
- Xu Yan
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China.
| | - Jiahui Ma
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Xinqing Chen
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Miao Lei
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Tianning Li
- School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, Henan Normal University, Xinxiang 453007, China
| | - Yunping Han
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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van Dorst PWM, van der Pol S, Salami O, Dittrich S, Olliaro P, Postma M, Boersma C, van Asselt ADI. Evaluations of training and education interventions for improved infectious disease management in low-income and middle-income countries: a systematic literature review. BMJ Open 2022; 12:e053832. [PMID: 35190429 PMCID: PMC8860039 DOI: 10.1136/bmjopen-2021-053832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVES To identify most vital input and outcome parameters required for evaluations of training and education interventions aimed at addressing infectious diseases in low-income and middle-income countries. DESIGN Systematic review. DATA SOURCES PubMed/Medline, Web of Science and Scopus were searched for eligible studies between January 2000 and November 2021. STUDY SELECTION Health economic and health-outcome studies on infectious diseases covering an education or training intervention in low-income and middle-income countries were included. RESULTS A total of 59 eligible studies covering training or education interventions for infectious diseases were found; infectious diseases were categorised as acute febrile infections (AFI), non-AFI and other non-acute infections. With regard to input parameters, the costs (direct and indirect) were most often reported. As outcome parameters, five categories were most often reported including final health outcomes, intermediate health outcomes, cost outcomes, prescription outcomes and health economic outcomes. Studies showed a wide range of per category variables included and a general lack of uniformity across studies. CONCLUSIONS Further standardisation is needed on the relevant input and outcome parameters in this field. A more standardised approach would improve generalisability and comparability of results and allow policy-makers to make better informed decisions on the most effective and cost-effective interventions.
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Affiliation(s)
- Pim Wilhelmus Maria van Dorst
- University Medical Center Groningen, Department of Health Sciences, University of Groningen, Groningen, The Netherlands
| | - Simon van der Pol
- University Medical Center Groningen, Department of Health Sciences, University of Groningen, Groningen, The Netherlands
| | - Olawale Salami
- Foundation for Innovative New Diagnostics, Geneva, Switzerland
| | - Sabine Dittrich
- Malaria/Fever Program, Foundation for Innovative New Diagnostics, Geneva, Switzerland
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Piero Olliaro
- Foundation for Innovative New Diagnostics, Geneva, Switzerland
| | - Maarten Postma
- University Medical Center Groningen, Department of Health Sciences, University of Groningen, Groningen, The Netherlands
| | - Cornelis Boersma
- University Medical Center Groningen, Department of Health Sciences, University of Groningen, Groningen, The Netherlands
- Department of Management Sciences, Open University, Heerlen, The Netherlands
| | - Antoinette Dorothea Isabelle van Asselt
- University Medical Center Groningen, Department of Health Sciences, University of Groningen, Groningen, The Netherlands
- University Medical Center Groningen, Department of Epidemiology, University of Groningen, Groningen, The Netherlands
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Inactivation of Antibiotic-Resistant Bacteria in Wastewater by Ozone-Based Advanced Water Treatment Processes. Antibiotics (Basel) 2022; 11:antibiotics11020210. [PMID: 35203813 PMCID: PMC8868322 DOI: 10.3390/antibiotics11020210] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 01/27/2022] [Accepted: 02/05/2022] [Indexed: 02/07/2023] Open
Abstract
The inactivating effect of ozone (O3)-based advanced oxidation processes (AOPs) (O3/H2O2, O3/UV, and O3/UV/H2O2 systems) on antimicrobial-resistant bacteria (AMRB) and antimicrobial-susceptible bacteria (AMSB) in sewage treatment plant (STP) wastewater was investigated. The AMRB were grouped into six classes: carbapenem-resistant Enterobacteriaceae (CRE), extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae (ESBL-E), multidrug-resistant Acinetobacter (MDRA), multidrug-resistant Pseudomonas aeruginosa (MDRP), methicillin-resistant Staphylococcus aureus (MRSA), and vancomycin-resistant Enterococcus (VRE); these classes constituted the World Health Organization (WHO) global priority list of AMRB. The results indicate that O3-based advanced wastewater treatment inactivated all AMRB and AMSB (>99.9%) after 10 min of treatment, and significant differences (p < 0.5) were not observed in the disinfection of AMRB and AMSB by each treatment. Altered taxonomic diversity of micro-organisms based on 16S rRNA gene sequencing via O3/UV and O3/UV/H2O2 treatment showed that advanced wastewater treatments not only inactivated AMRB but also removed antimicrobial resistance genes (AMRGs) in the wastewater. Consequently, this study recommends the use of advanced wastewater treatments for treating the STP effluent, reducing environmental pollution, and alleviating the potential hazard to human health caused by AMRB, AMSB, and infectious diseases. Overall, this study provides a new method for assessing environmental risks associated with the spread of AMRB and AMSB in aquatic environments, while keeping the water environment safe and maintaining human health.
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125
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Li F, Liu F, Huang K, Yang S. Advancement of Gallium and Gallium-Based Compounds as Antimicrobial Agents. Front Bioeng Biotechnol 2022; 10:827960. [PMID: 35186906 PMCID: PMC8855063 DOI: 10.3389/fbioe.2022.827960] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/13/2022] [Indexed: 12/30/2022] Open
Abstract
With the abuse and misuse of antibiotics, antimicrobial resistance has become a challenging issue in the medical system. Iatrogenic and non-iatrogenic infections caused by multidrug-resistant (MDR) pathogens pose serious threats to global human life and health because the efficacy of traditional antibiotics has been greatly reduced and the resulting socio-economic burden has increased. It is important to find and develop non-antibiotic-dependent antibacterial strategies because the development of new antibiotics can hardly keep pace with the emergence of resistant bacteria. Gallium (III) is a multi-target antibacterial agent that has an excellent antibacterial activity, especially against MDR pathogens; thus, a gallium (III)-based treatment is expected to become a new antibacterial strategy. However, some limitations of gallium ions as antimicrobials still exist, including low bioavailability and explosive release. In recent years, with the development of nanomaterials and clathrates, the progress of manufacturing technology, and the emergence of synergistic antibacterial strategies, the antibacterial activities of gallium have greatly improved, and the scope of application in medical systems has expanded. This review summarizes the advancement of current optimization for these key factors. This review will enrich the knowledge about the efficiency and mechanism of various gallium-based antibacterial agents and provide strategies for the improvement of the antibacterial activity of gallium-based compounds.
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Affiliation(s)
| | - Fengxiang Liu
- *Correspondence: Fengxiang Liu, ; Kai Huang, ; Shengbing Yang,
| | - Kai Huang
- *Correspondence: Fengxiang Liu, ; Kai Huang, ; Shengbing Yang,
| | - Shengbing Yang
- *Correspondence: Fengxiang Liu, ; Kai Huang, ; Shengbing Yang,
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126
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Shen Y, Li S, Qi R, Wu C, Yang M, Wang J, Cai Z, Liu K, Yue J, Guan B, Han Y, Wang S, Wang Y. Assembly of Hexagonal Column Interpenetrated Spheres from Plant Polyphenol/Cationic Surfactants and Their Application as Antimicrobial Molecular Banks. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202110938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Yutan Shen
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Shikun Li
- University of Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Ruilian Qi
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Chunxian Wu
- School of Chemistry and chemical Engineering Guangdong Pharmaceutical University Guangzhou 510006 P. R. China
| | - Ming Yang
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jie Wang
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Zhuojun Cai
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Kaiang Liu
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Jiling Yue
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Bo Guan
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yuchun Han
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Shu Wang
- Key Laboratory of Organic Solids Beijing National Laboratory for Molecular Sciences (BNLMS) CAS Research/ Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yilin Wang
- Department CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100190 P. R. China
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127
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Heterologous Expression, Biochemical Characterisation and Computational Analysis of Bacteroides fragilis Enolase. Comput Biol Chem 2022; 98:107658. [DOI: 10.1016/j.compbiolchem.2022.107658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 02/05/2022] [Accepted: 02/25/2022] [Indexed: 11/21/2022]
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128
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Barlow E, Morton A, Megiddo I, Colson A. Optimal subscription models to pay for antibiotics. Soc Sci Med 2022; 298:114818. [PMID: 35247782 PMCID: PMC9005781 DOI: 10.1016/j.socscimed.2022.114818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 01/10/2022] [Accepted: 02/11/2022] [Indexed: 11/30/2022]
Abstract
Novel subscription payment schemes are one of the approaches being explored to tackle the threat of antimicrobial resistance. Under these schemes, some or all of the payment is made via a fixed “subscription” payment, which provides a funder unlimited access to the treatment for a specific duration, rather than relying purely on a price per pill. Subscription-based schemes guarantee pharmaceutical firms income that incentivises investment in developing new antibiotics, and can promote responsible stewardship. From the pharmaceutical perspective, revenue is disassociated from sales, removing benefits from push marketing strategies. We investigate this from the funder perspective, and consider that the funder plays a key role in promoting responsible antibiotic stewardship by choosing the price per pill for providers such that this encourages appropriate antibiotic use. This choice determines the payment structure, and we investigate the impact of this choice through the lens of social welfare. We present a mathematical model of subscription payment schemes, explicitly featuring fixed and volume-based payment components for a given treatment price. Total welfare returned at a societal level is then estimated (incorporating financial costs and monetised benefits). We consider a practical application of the model to development of novel antibiotic treatment for Gonorrhoea, and examine the optimal treatment price under different parameterisations. Specifically, we analyse two contrasting scenarios - one where a new antibiotic's prioritised role is reducing transmission, and one where a more pressing requirement is conserving the antibiotic as an effective last defence. Critically, this analysis demonstrates that effective roll-out of a subscription payment scheme for a new antibiotic requires a comprehensive assessment of the benefits gained from treatment. We discuss the insights this work presents on the nature of these payment schemes, and how these insights can enable decision-makers to take the first steps in determining effective structuring of subscription payment schemes. Policymakers and insurers are currently designing antibiotics subscription schemes. Social welfare returned from these payment schemes is modelled mathematically. Payment structures maximising social welfare are identified under different scenarios. If reduced transmission is a priority, subscription-only payments are near-optimal. If preserving an antibiotic is a priority, optimal structures include per-use payments.
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Affiliation(s)
- Euan Barlow
- Department of Management Science, Strathclyde Business School, University of Strathclyde, Glasgow, UK.
| | - Alec Morton
- Department of Management Science, Strathclyde Business School, University of Strathclyde, Glasgow, UK
| | - Itamar Megiddo
- Department of Management Science, Strathclyde Business School, University of Strathclyde, Glasgow, UK
| | - Abigail Colson
- Department of Management Science, Strathclyde Business School, University of Strathclyde, Glasgow, UK
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129
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Bertolino G, Marras L, Mureddu V, Camboni M, Cadeddu A. Trends of Antimicrobial Consumption in Hospital: Tackling the Hidden Part of the Iceberg with an Electronic Personalised Prescription Software for Antimicrobial Stewardship. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022. [DOI: 10.1007/5584_2022_752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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130
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Pahlman K, Fehross A, Fox GJ, Silva DS. Ethical health security in the age of antimicrobial resistance. BMJ Glob Health 2022; 7:e007407. [PMID: 34996766 PMCID: PMC8743836 DOI: 10.1136/bmjgh-2021-007407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE Owing to its potential human, social and economic costs, antimicrobial resistance (AMR) is frequently referred to as a threat to health security. Simultaneously, health security and the preservation of antimicrobials are often described as a global public good. However, how the term 'public good' is used in the context of health security, and the values that underpin it, remains ambiguous. Policymaking is never value-free, and a better examination of such values is critical to understanding how issues such as AMR are problematised and how policy decisions are informed. DESIGN We used McDougall's version of critical interpretive synthesis to capture the recurring concepts and arguments within public policy, political science and applied ethics literature on AMR. Articles were analysed by identifying recurring ideas and developing themes across the literature. RESULTS A total of 77 papers were included in our review. In the context of health security and AMR, the concept of 'public good' appears to be used interchangeably with 'common good', reflecting confusion, but sometimes meaningful differences, regarding how antimicrobials, as a good, are conceived. Main approaches to addressing AMR are statism, globalism and regionalism, which appeal to different values in guiding policymakers. Common justificatory values underpinning preservation of antimicrobials as a public good were prevention of harm, solidarity, justice and rights. CONCLUSION The findings suggest that within the literature there is a lack of conceptual clarity as to whether antimicrobials constitute a public good or a common good. Moreover, the way in which antimicrobials are conceived and the approaches through which AMR as a threat to health security is addressed appear to be grounded in values that are often implicit. Being explicit about the values that underpin AMR and health security is not simply an intellectual exercise but has very real policy and programmatic implications.
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Affiliation(s)
- Kari Pahlman
- Sydney Health Ethics, School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Anson Fehross
- Sydney Health Ethics, School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Greg J Fox
- Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
| | - Diego S Silva
- Sydney Health Ethics, School of Public Health, The University of Sydney, Sydney, New South Wales, Australia
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131
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Zhdanov VP. Late stage of the formation of a protein corona around nanoparticles in biofluids. Phys Rev E 2022; 105:014402. [PMID: 35193252 DOI: 10.1103/physreve.105.014402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 12/12/2021] [Indexed: 12/13/2022]
Abstract
In biofluids containing various proteins, nanoparticles rapidly come to be surrounded by a nanometer-thick protein layer referred to as a protein corona. The late stage of this process occurs via replacement of proteins already bound to a nanoparticle by new ones. In the available kinetic models, this process is considered to include independent acts of protein detachment and attachment. It can, however, occur also at the level of protein pairs via exchange, i.e., concerted replacement of an attached protein by a newly arrived one. I argue that the exchange channel can be more important than the conventional one. To illustrate the likely specifics of the exchange channel, I present a kinetic model focused exclusively on this channel and based on the Evans-Polanyi-type relation between the activation energies of the protein-exchange steps and the protein binding energies. The corresponding kinetics were calculated for three qualitatively different distributions of proteins in solution over binding energy (with a maximum or monotonously decreasing or increasing, respectively) and are found to be similar, with relatively rapid replacement of weakly bound proteins and slow redistribution of strongly bound proteins. The ratio of the timescales characterizing the evolution of weakly and strongly bound proteins is found to depend on the type of the binding-energy distribution.
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Affiliation(s)
- Vladimir P Zhdanov
- Section of Nano and Biophysics, Department of Physics, Chalmers University of Technology, Göteborg, Sweden and Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk, Russia
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132
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Shrivastava S, Arya R, Kim KK, Lee NE. A quorum-based fluorescent probe for imaging pathogenic bacteria. J Mater Chem B 2022; 10:4491-4500. [DOI: 10.1039/d2tb00247g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Imaging of bacterial infections can be used for a wide range of investigations, including diagnosis and pathogenesis of infections, and molecular probes targeting biological processes during infection have been used...
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133
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Ma Z, Sun J, Dong X, Gan D, Peng W, Li Y, Qian W, Liu P, Shen J. Zwitterionic/active ester block polymers as multifunctional coating for polyurethane-based substrates. J Mater Chem B 2022; 10:3687-3695. [DOI: 10.1039/d2tb00429a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bacterial associated infection, blood coagulation, and tissue adhesion are severe issues associated with biomedical implants & devices in clinic applications. Here, we report a general strategy to simultaneously tackle these...
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134
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Luong HX, Ngan HD, Thi Phuong HB, Quoc TN, Tung TT. Multiple roles of ribosomal antimicrobial peptides in tackling global antimicrobial resistance. ROYAL SOCIETY OPEN SCIENCE 2022; 9:211583. [PMID: 35116161 PMCID: PMC8790363 DOI: 10.1098/rsos.211583] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/20/2021] [Indexed: 05/03/2023]
Abstract
In the last century, conventional antibiotics have played a significant role in global healthcare. Antibiotics support the body in controlling bacterial infection and simultaneously increase the tendency of drug resistance. Consequently, there is a severe concern regarding the regression of the antibiotic era. Despite the use of antibiotics, host defence systems are vital in fighting infectious diseases. In fact, the expression of ribosomal antimicrobial peptides (AMPs) has been crucial in the evolution of innate host defences and has been irreplaceable to date. Therefore, this valuable source is considered to have great potential in tackling the antimicrobial resistance (AMR) crisis. Furthermore, the possibility of bacterial resistance to AMPs has been intensively investigated. Here, we summarize all aspects related to the multiple applications of ribosomal AMPs and their derivatives in combating AMR.
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Affiliation(s)
- Huy Xuan Luong
- Faculty of Pharmacy, PHENIKAA University, Hanoi 12116, Vietnam
- PHENIKAA Institute for Advanced Study (PIAS), PHENIKAA University, Hanoi 12116, Vietnam
| | | | | | - Thang Nguyen Quoc
- Nuclear Medicine Unit, Vinmec Healthcare System, Hanoi 10000, Vietnam
| | - Truong Thanh Tung
- Faculty of Pharmacy, PHENIKAA University, Hanoi 12116, Vietnam
- PHENIKAA Institute for Advanced Study (PIAS), PHENIKAA University, Hanoi 12116, Vietnam
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135
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Rational design and synthesis of Oreoch-2 analogues as efficient broad-spectrum antimicrobial peptides. Bioorg Chem 2021; 119:105583. [PMID: 34971943 DOI: 10.1016/j.bioorg.2021.105583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/18/2021] [Accepted: 12/21/2021] [Indexed: 12/28/2022]
Abstract
In recent years, bacterial resistance has risen sharply, which seriously endangers public health due to the abuse of antibiotics and the lack of new antibiotics. Therefore, there is an urgent need for new antimicrobial agents to combat multidrug-resistant (MDR) bacterial infections. In this paper, six Oreoch-2 analogues were rationally designed and efficiently synthesized by using the truncation strategy with Oreoch-2 as the lead compound. Evaluation of these analogues against a panel of Gram-positive and Gram-negative bacteria including MDR strains was performed. Among them, ZN-5 and ZN-6 were identified to be broad-spectrum effective analogues, which were superior to their parent peptide Oreoch-2. In addition, ZN-5 and ZN-6 had good stability to the physiological environment, and much higher selectivity to bacterial cells than to mammalian cells. Time-kill kinetics and transmission electron microscope (TEM) studies suggested that these analogues were typical bactericidal agents and quickly eliminated bacteria in a bactericidal mode by disrupting bacterial cell membrane. Moreover, ZN-5 and ZN-6 could inhibit biofilm formation of Staphylococcus aureus ATCC25923. Compared with their parent peptide Oreoch-2, ZN-5 and ZN-6 not only possessed shortened peptide chains, but also showed slightly improved antibacterial activity and greatly reduced hemolysis. This indicates that they are ideal lead compounds of antimicrobial peptides, which can be developed as substitutes for traditional antibiotics.
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Aslan E, Vyas C, Yupanqui Mieles J, Humphreys G, Diver C, Bartolo P. Preliminary Characterization of a Polycaprolactone-SurgihoneyRO Electrospun Mesh for Skin Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2021; 15:89. [PMID: 35009233 PMCID: PMC8746156 DOI: 10.3390/ma15010089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/09/2021] [Accepted: 12/15/2021] [Indexed: 05/09/2023]
Abstract
Skin is a hierarchical and multi-cellular organ exposed to the external environment with a key protective and regulatory role. Wounds caused by disease and trauma can lead to a loss of function, which can be debilitating and even cause death. Accelerating the natural skin healing process and minimizing the risk of infection is a clinical challenge. Electrospinning is a key technology in the development of wound dressings and skin substitutes as it enables extracellular matrix-mimicking fibrous structures and delivery of bioactive materials. Honey is a promising biomaterial for use in skin tissue engineering applications and has antimicrobial properties and potential tissue regenerative properties. This preliminary study investigates a solution electrospun composite nanofibrous mesh based on polycaprolactone and a medical grade honey, SurgihoneyRO. The processing conditions were optimized and assessed by scanning electron microscopy to fabricate meshes with uniform fiber diameters and minimal presence of beads. The chemistry of the composite meshes was examined using Fourier transform infrared spectroscopy and X-ray photon spectroscopy showing incorporation of honey into the polymer matrix. Meshes incorporating honey had lower mechanical properties due to lower polymer content but were more hydrophilic, resulting in an increase in swelling and an accelerated degradation profile. The biocompatibility of the meshes was assessed using human dermal fibroblasts and adipose-derived stem cells, which showed comparable or higher cell metabolic activity and viability for SurgihoneyRO-containing meshes compared to polycaprolactone only meshes. The meshes showed no antibacterial properties in a disk diffusion test due to a lack of hydrogen peroxide production and release. The developed polycaprolactone-honey nanofibrous meshes have potential for use in skin applications.
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Affiliation(s)
- Enes Aslan
- Department of Machine and Metal Technologies, Gumusova Vocational School, Duzce University, Duzce 81850, Turkey;
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Oxford Road, Manchester M13 9PL, UK; (C.V.); (J.Y.M.)
| | - Cian Vyas
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Oxford Road, Manchester M13 9PL, UK; (C.V.); (J.Y.M.)
| | - Joel Yupanqui Mieles
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Oxford Road, Manchester M13 9PL, UK; (C.V.); (J.Y.M.)
| | - Gavin Humphreys
- School of Health Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, UK;
| | - Carl Diver
- Department of Engineering, Manchester Metropolitan University, Manchester M15 6BH, UK;
| | - Paulo Bartolo
- Department of Mechanical, Aerospace and Civil Engineering, University of Manchester, Oxford Road, Manchester M13 9PL, UK; (C.V.); (J.Y.M.)
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 639798, Singapore
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137
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Alterations of fecal antibiotic resistome in COVID-19 patients after empirical antibiotic exposure. Int J Hyg Environ Health 2021; 240:113882. [PMID: 34915282 PMCID: PMC8664710 DOI: 10.1016/j.ijheh.2021.113882] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 11/05/2021] [Accepted: 11/16/2021] [Indexed: 12/16/2022]
Abstract
As the COVID-19 pandemic spread globally, the consumption of antibiotics increased. However, no studies exist evaluating the effect of antibiotics use on the antibiotic resistance of intestinal flora in COVID-19 patients during the pandemic. To explore this issue, we collected 15 metagenomic data of fecal samples from healthy controls (HCs) with no use history of antibiotics, 23 metagenomic data of fecal samples from COVID-19 patients who received empirical antibiotics [COVID-19 (abx+)], 18 metagenomic data of fecal samples from antibiotics-naïve COVID-19 patients [COVID-19 (abx-)], and six metagenomic data of fecal samples from patients with community-acquired pneumonia [PC (abx+)] from the Sequence Read Archive database. A total of 513 antibiotic-resistant gene (ARG) subtypes of 18 ARG types were found. Antibiotic treatment resulted in a significant increase in the abundance of ARGs in intestinal flora of COVID-19 patients and markedly altered the composition of ARG profiles. Grouped comparisons of pairs of Bray-Curtis dissimilarity values demonstrated that the dissimilarity of the HC versus the COVID-19 (abx+) group was significantly higher than the dissimilarity of the HC versus the COVID-19 (abx-) group. The mexF, mexD, OXA_209, major facilitator superfamily transporter, and EmrB_QacA family major facilitator transporter genes were the discriminative ARG subtypes for the COVID-19 (abx+) group. IS621, qacEdelta, transposase, and ISCR were significantly increased in COVID-19 (abx+) group; they greatly contributed toward explaining variation in the relative abundance of ARG types. Overall, our data provide important insights into the effect of antibiotics use on the antibiotic resistance of COVID-19 patients during the COVID-19 epidemic.
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López-Molina S, Galiana-Roselló C, Galiana C, Gil-Martínez A, Bandeira S, González-García J. Alkaloids as Photosensitisers for the Inactivation of Bacteria. Antibiotics (Basel) 2021; 10:1505. [PMID: 34943717 PMCID: PMC8698950 DOI: 10.3390/antibiotics10121505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 11/29/2021] [Accepted: 12/02/2021] [Indexed: 12/14/2022] Open
Abstract
Antimicrobial photodynamic therapy has emerged as a powerful approach to tackle microbial infections. Photodynamic therapy utilises a photosensitiser, light, and oxygen to generate singlet oxygen and/or reactive oxygen species in an irradiated tissue spot, which subsequently react with nearby biomolecules and destroy the cellular environment. Due to the possibility to irradiate in a very precise location, it can be used to eradicate bacteria, fungus, and parasites upon light activation of the photosensitiser. In this regard, natural products are low-cost molecules capable of being obtained in large quantities, and some of them can be used as photosensitisers. Alkaloids are the largest family among natural products and include molecules with a basic nature and aromatic rings. For this study, we collected the naturally occurring alkaloids used to treat microorganism infections using a photodynamic inactivation approach. We gathered their main photophysical properties (excitation/emission wavelengths, quantum yields, and oxygen quantum yield) which characterise the ability to efficiently photosensitise. In addition, we described the antibacterial activity of alkaloids upon irradiation and the mechanisms involved in the microorganism killing. This review will serve as a reference source to obtain the main information on alkaloids used in antimicrobial photodynamic therapy.
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Affiliation(s)
- Sònia López-Molina
- Department of Inorganic Chemistry, Institute of Molecular Science, Catedrático José Beltran 2, 46980 Paterna, Spain; (S.L.-M.); (C.G.-R.); (A.G.-M.); (S.B.)
| | - Cristina Galiana-Roselló
- Department of Inorganic Chemistry, Institute of Molecular Science, Catedrático José Beltran 2, 46980 Paterna, Spain; (S.L.-M.); (C.G.-R.); (A.G.-M.); (S.B.)
| | - Carolina Galiana
- Department of Pharmacy, CEU Cardenal Herrera University, Ramón y Cajal s/n, 46115 Alfara del Patriarca, Spain;
| | - Ariadna Gil-Martínez
- Department of Inorganic Chemistry, Institute of Molecular Science, Catedrático José Beltran 2, 46980 Paterna, Spain; (S.L.-M.); (C.G.-R.); (A.G.-M.); (S.B.)
| | - Stephane Bandeira
- Department of Inorganic Chemistry, Institute of Molecular Science, Catedrático José Beltran 2, 46980 Paterna, Spain; (S.L.-M.); (C.G.-R.); (A.G.-M.); (S.B.)
| | - Jorge González-García
- Department of Inorganic Chemistry, Institute of Molecular Science, Catedrático José Beltran 2, 46980 Paterna, Spain; (S.L.-M.); (C.G.-R.); (A.G.-M.); (S.B.)
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139
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Zhang J, Lu T, Zhong H, Shen P, Wei Y. Zero valent iron improved methane production and specifically reduced aminoglycoside and tetracycline resistance genes in anaerobic digestion. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 136:122-131. [PMID: 34662788 DOI: 10.1016/j.wasman.2021.10.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 10/05/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
It is unadvisable to discuss the antibiotic resistance genes (ARGs) reduction in anaerobic digestion (AD) system neglecting its main purpose-methane production. The methane production improvement coupling with antibiotic resistance genes (ARGs) reduction in anaerobic digestion (AD) by zero valent iron (ZVI) were simultaneously investigated. Whether the role of ZVI on the ARGs fate was random or specific was clarified through the high-throughput qPCR (HT-qPCR). Results indicated that ZVI improved methane production and ARGs reduction by 23.9% and 25.0%, respectively. The improved methane production was associated with chemical reaction and variances of microbial community caused by ZVI, where DIET between Petrimonas, Clostridium and Syntrophomonas, Methanosarcina was established along with ACAS being enriched. ZVI specifically, not randomly, facilitated the reduction of aminoglycoside resistance genes of antibiotic inactivation and tetracycline resistance genes of ribosomal protection proteins. The specifical reduction could be attributed to enzyme activity inhibition and intracellular ionic disturbance caused by higher amounts of ZVI, although most of ARGs fate could be well explained by microbial community which contributed the most to ARGs dynamics as a whole. ZVI-based AD was a promising way for the improvement of methane production coupling ARGs reduction.
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Affiliation(s)
- Junya Zhang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Tiedong Lu
- College of Life Science and Technology, Guangxi University, Nanning 530005, Guangxi, China
| | - Hui Zhong
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peihong Shen
- College of Life Science and Technology, Guangxi University, Nanning 530005, Guangxi, China
| | - Yuansong Wei
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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140
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Zawadzka K, Felczak A, Głowacka IE, Piotrowska DG, Lisowska K. Evaluation of the Antimicrobial Potential and Toxicity of a Newly Synthesised 4-(4-(Benzylamino)butoxy)-9 H-carbazole. Int J Mol Sci 2021; 22:ijms222312796. [PMID: 34884610 PMCID: PMC8657542 DOI: 10.3390/ijms222312796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/15/2022] Open
Abstract
One of the greatest threats to human and animal health is posed by infections caused by drug-resistant bacterial strains. Therefore, newly synthesised substances are tested for their antimicrobial activity. Carbazole derivatives seem to be promising antibacterial agents. This study aimed at investigating the toxicity and activity of newly synthesised, functionalised carbazole derivative 2 (4-(4-(benzylamino)butoxy)-9H-carbazole) against various microorganisms. Its antimicrobial potential against Gram-positive and Gram-negative bacteria, yeast, and filamentous fungi was examined according to CLSI (Clinical and Laboratory Standards Institute) standards. The tested compound was found to efficiently inhibit the growth of Gram-positive strains. The addition of carbazole derivative 2 at the concentration of 30 µg/mL caused inhibition of bacterial growth by over 95%. Moreover, about 50 and 45% limitation of Pseudomonas aeruginosa and Aspergillus flavus growth was observed in the samples incubated with the addition of 20 and 60 µg/mL of the compound, respectively. Its addition to the microbial cultures caused an increase in the permeability of the cellular membrane. Slight haemolysis of red blood cells was observed after 24-h treatment with carbazole derivative 2. On the other hand, human fibroblasts were found to be more sensitive to its effects. The activity of the tested compound indicates a possibility of its further modification in order to obtain effective drugs, especially against drug-resistant staphylococci.
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Affiliation(s)
- Katarzyna Zawadzka
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland; (A.F.); (K.L.)
- Correspondence: ; Tel.: +48-426354500
| | - Aleksandra Felczak
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland; (A.F.); (K.L.)
| | - Iwona E. Głowacka
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Lodz, 90-151 Lodz, Poland; (I.E.G.); (D.G.P.)
| | - Dorota G. Piotrowska
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Lodz, 90-151 Lodz, Poland; (I.E.G.); (D.G.P.)
| | - Katarzyna Lisowska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 90-237 Lodz, Poland; (A.F.); (K.L.)
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141
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Shen Y, Li S, Qi R, Wu C, Yang M, Wang J, Cai Z, Liu K, Yue J, Guan B, Han Y, Wang S, Wang Y. Assembly of Hexagonal Column Interpenetrated Spheres from Plant Polyphenol/Cationic Surfactants and Their Application as Antimicrobial Molecular Banks. Angew Chem Int Ed Engl 2021; 61:e202110938. [PMID: 34791775 DOI: 10.1002/anie.202110938] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Indexed: 11/08/2022]
Abstract
Microbial infections has become a great threat to human health and one of the main risks arises from direct contact with the surfaces contaminated by pathogenic microbes. Developing long-lasting antimicrobial materials becomes an urgent need. Herein, a kind of hexagonal column interpenetrated spheres (HCISs) are fabricated by non-covalent assembly of plant gallic acid with quaternary ammonium surfactants. Different from one-time burst release of conventional antimicrobial agents, the HCIS acts like a "antimicrobial molecular bank" and releases the antimicrobial ingredients in a multistage way, leading to long-lasting antimicrobial performance. Taking advantage of strong hydrophobicity and adhesion, HCISs are applicable to various substrates and endowed with anti-water washing property, thus showing high in vitro antimicrobial efficiency ( > 99 %) even after being used for 10 cycles. Meanwhile, HCISs exhibit broad-spectrum antimicrobial activity against bacteria and fungi, and have good biocompatibility with mammalian cells. Such a low-cost and portable long-lasting antimicrobial agent meets the growing anti-infection demand in public spaces.
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Affiliation(s)
- Yutan Shen
- Institute of Chemistry Chinese Academy of Sciences, Key Laboratory of Colloid, Interface and Chemical Thermodynamics, 100190, Beijing, CHINA
| | - Shikun Li
- Chinese Academy of Sciences, University of Chinese Academy of Sciences, CHINA
| | - Ruilian Qi
- Institute of Chemistry Chinese Academy of Sciences, Key Laboratory of Colloid, Interface and Chemical Thermodynamics, 100190, Beijing, CHINA
| | - Chunxian Wu
- Guangdong Pharmaceutical University, School of Chemistry and Chemical Engineering, 510006, Guangzhou, CHINA
| | - Ming Yang
- Institute of Chemistry Chinese Academy of Sciences, Key Laboratory of Colloid, Interface and Chemical Thermodynamics, 100190, Beijing, CHINA
| | - Jie Wang
- Institute of Chemistry Chinese Academy of Sciences, Key Laboratory of Colloid, Interface and Chemical Thermodynamic, 100190, Beijing, CHINA
| | - Zhuojun Cai
- Institute of Chemistry Chinese Academy of Sciences, Key Laboratory of Colloid, Interface and Chemical Thermodynamics, 100190, Beijing, CHINA
| | - Kaiang Liu
- Chinese Academy of Sciences, Institute of Chemistry, 100190, Beijing, CHINA
| | - Jiling Yue
- Chinese Academy of Sciences, Institute of Chemistry, 100190, Beijing, CHINA
| | - Bo Guan
- Chinese Academy of Sciences, Institute of Chemistry, 100190, Beijing, CHINA
| | - Yuchun Han
- Institute of Chemistry Chinese Academy of Sciences, Key Laboratory of Colloid, Interface and Chemical Thermodynamics, 100190, Beijing, CHINA
| | - Shu Wang
- Institute of Chemistry Chinese Academy of Sciences, Key laboratory of organic solids, 100190, Beijing, CHINA
| | - Yilin Wang
- Chinese Academy of Sciences, Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Zhongguancun, 100190, Beijing, CHINA
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142
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Gong C, Sun J, Xiao Y, Qu X, Lang M. Synthetic Mimics of Antimicrobial Peptides for the Targeted Therapy of Multidrug-Resistant Bacterial Infection. Adv Healthc Mater 2021; 10:e2101244. [PMID: 34410043 DOI: 10.1002/adhm.202101244] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 08/03/2021] [Indexed: 12/28/2022]
Abstract
Antibacterial materials are highly demanded in treatment of bacterial infection, especially severe ones with multidrug-resistance. Herein, pH-responsive polypeptide, i.e., poly-L-lysine modified by 1-(propylthio)acetic acid-3-octylimidazolium and citraconic anhydride (PLL-POIM-CA), is synthesized by post-polymerization modification of poly-L-lysine (PLL) with 1-(propylthio)acetic acid-3-octylimidazolium (POIM) and citraconic anhydride (CA). It is observed that PLL-POIM-CA is stable under normal physiological condition, while CA cleaves rapidly at weakly acidic environment like bacterial infectious sites. The hydrolyzed PLL-POIM-CA exhibits excellent broad-spectrum antibacterial activities against Gram-negative bacteria of Escherichia coli and Gram-positive bacteria of Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA). In particular, the minimum inhibitory concentration (MIC) against multidrug-resistant bacteria like MRSA is as low as 7.8 µg mL-1 . Moreover, PLL-POIM-CA exhibits good biocompatibility with mouse fibroblast cells (L929) in vitro and improved hemocompatibility with an HC50 exceeding 5000 µg mL-1 . Therefore, PLL-POIM-CA displays an excellent bacteria versus cells selectivity (HC50 /MIC) over 534, which is 53 times higher than natural antimicrobial peptide of indolicidin. It is further demonstrated in vivo that the antimicrobial polypeptide effectively accelerates MRSA-infected wound healing by relieving local inflammatory response. Therefore, this targeted antimicrobial polypeptide has broad application prospects for the treatment of multidrug-resistant bacterial infection.
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Affiliation(s)
- Chenyu Gong
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Junjie Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Yan Xiao
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Xue Qu
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
| | - Meidong Lang
- Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 China
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143
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Maganha de Almeida Kumlien AC, González-Villalobos E, Balcázar JL. Making waves: How does the emergence of antimicrobial resistance affect policymaking? WATER RESEARCH 2021; 206:117772. [PMID: 34688095 DOI: 10.1016/j.watres.2021.117772] [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: 07/29/2021] [Revised: 10/03/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
This article considers current trends in antimicrobial resistance (AMR) research and knowledge gaps relevant to policymaking in the water sector. Specifically, biological indicators of AMR (antibiotic-resistant bacteria and their resistance genes) and detection methods that have been used so far are identified and discussed, as well as the problems with and solutions to the collection of AMR data, sewage surveillance lessons from the COVID-19 pandemic, and the financial burden caused by AMR, which could be synergically used to improve advocacy on AMR issues in the water sector. Finally, this article proposes solutions to overcoming existing hurdles and shortening the time it will take to have an impact on policymaking and regulation in the sector.
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Affiliation(s)
| | - Edgar González-Villalobos
- Catalan Institute for Water Research (ICRA), 17003 Girona, Spain; University of Girona, 17004 Girona, Spain
| | - José L Balcázar
- Catalan Institute for Water Research (ICRA), 17003 Girona, Spain; University of Girona, 17004 Girona, Spain.
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144
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Preußke N, Lipfert M, Rothemund S, Leippe M, Sönnichsen FD. Designed Trp-Cage Proteins with Antimicrobial Activity and Enhanced Stability. Biochemistry 2021; 60:3187-3199. [PMID: 34613690 DOI: 10.1021/acs.biochem.1c00567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
α-Helical antimicrobial peptides (αAMPs) are among the potential candidates for new anti-infectives to tackle the global crisis in antibiotic resistance, but they suffer from low bioavailability due to high susceptibility to enzymatic degradation. Here, we describe a strategy to increase the resistance of αAMPs against proteases. Fusing the 12-residue αAMP KR-12 with a Trp-cage domain induces an α-helical structure in the otherwise unfolded KR-12 moiety in solution. The resulting antimicrobial Trp-cage exhibits higher proteolytic resistance due to its stable fold as evidenced by correlating sequence-resolved digest data with structural analyses. In addition, the antimicrobial Trp-cage displays increased activity against bacteria in the presence of physiologically relevant concentrations of NaCl, while the hemolytic activity remains negligible. In contrast to previous strategies, the presented approach is not reliant on artificial amino acids and is therefore applicable to biosynthetic procedures. Our study aims to improve the pharmacokinetics of αAMPs to facilitate their use as therapeutics.
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Affiliation(s)
- Nils Preußke
- Otto Diels Institute for Organic Chemistry, Kiel University, Otto-Hahn-Platz 3-5, 24118 Kiel, Germany.,Zoological Institute, Kiel University, Am Botanischen Garten 3-9, 24118 Kiel, Germany
| | - Matthias Lipfert
- Otto Diels Institute for Organic Chemistry, Kiel University, Otto-Hahn-Platz 3-5, 24118 Kiel, Germany
| | - Sven Rothemund
- Faculty of Medicine, University of Leipzig, Liebigstraße 21, 04103 Leipzig, Germany
| | - Matthias Leippe
- Zoological Institute, Kiel University, Am Botanischen Garten 3-9, 24118 Kiel, Germany
| | - Frank D Sönnichsen
- Otto Diels Institute for Organic Chemistry, Kiel University, Otto-Hahn-Platz 3-5, 24118 Kiel, Germany
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145
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Kummer N, Wu T, De France KJ, Zuber F, Ren Q, Fischer P, Campioni S, Nyström G. Self-Assembly Pathways and Antimicrobial Properties of Lysozyme in Different Aggregation States. Biomacromolecules 2021; 22:4327-4336. [PMID: 34533934 DOI: 10.1021/acs.biomac.1c00870] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Antimicrobial resistance in microorganisms will cause millions of deaths and pose a vast burden on health systems; therefore, alternatives to existing small-molecule antibiotics have to be developed. Lysozyme is an antimicrobial enzyme and has broad-spectrum antimicrobial activity in different aggregated forms. Here, we propose a reductive pathway to obtain colloidally stable amyloid-like worm-shaped lysozyme nanoparticles (worms) from hen egg white lysozyme (HEWL) and compare them to amyloid fibrils made in an acid hydrolysis pathway. The aggregation of HEWL into worms follows strongly pH-dependent kinetics and induces a structural transition from α-helices to β-sheets. Both HEWL worms and amyloid fibrils show broad-spectrum antimicrobial activity against the bacteria Staphylococcus aureus (Gram-positive), Escherichia coli (Gram-negative), and the fungus Candida albicans. The colloidal stability of the worms allows the determination of minimum inhibitory concentrations, which are lower than that for native HEWL in the case of S. aureus. Overall, amyloid fibrils have the strongest antimicrobial effect, likely due to the increased positive charge compared to native HEWL. The structural and functional characterizations of HEWL worms and amyloids investigated herein are critical for understanding the detailed mechanisms of antimicrobial activity and opens up new avenues for the design of broad-spectrum antimicrobial materials for use in various applications.
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Affiliation(s)
- Nico Kummer
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland.,Institute of Food Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
| | - Tingting Wu
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland.,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, 201620 Shanghai, P. R. China
| | - Kevin J De France
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Flavia Zuber
- Laboratory for Biointerfaces, Empa-Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Empa-Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Peter Fischer
- Institute of Food Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
| | - Silvia Campioni
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Gustav Nyström
- Laboratory for Cellulose & Wood Materials, Empa-Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland.,Institute of Food Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland
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146
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Cedraro N, Cannalire R, Astolfi A, Mangiaterra G, Felicetti T, Vaiasicca S, Cernicchi G, Massari S, Manfroni G, Tabarrini O, Cecchetti V, Barreca ML, Biavasco F, Sabatini S. From Quinoline to Quinazoline-Based S. aureus NorA Efflux Pump Inhibitors by Coupling a Focused Scaffold Hopping Approach and a Pharmacophore Search. ChemMedChem 2021; 16:3044-3059. [PMID: 34032014 PMCID: PMC8518402 DOI: 10.1002/cmdc.202100282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/23/2021] [Indexed: 11/29/2022]
Abstract
Antibiotic resistance breakers, such as efflux pump inhibitors (EPIs), represent a powerful alternative to the development of new antimicrobials. Recently, by using previously described EPIs, we developed pharmacophore models able to identify inhibitors of NorA, the most studied efflux pump of Staphylococcus aureus. Herein we report the pharmacophore-based virtual screening of a library of new potential NorA EPIs generated by an in-silico scaffold hopping approach of the quinoline core. After chemical synthesis and biological evaluation of the best virtual hits, we found the quinazoline core as the best performing scaffold. Accordingly, we designed and synthesized a series of functionalized 2-arylquinazolines, which were further evaluated as NorA EPIs. Four of them exhibited a strong synergism with ciprofloxacin and a good inhibition of ethidium bromide efflux on resistant S. aureus strains coupled with low cytotoxicity against human cell lines, thus highlighting a promising safety profile.
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Affiliation(s)
- Nicholas Cedraro
- Department of Life and Environmental SciencesUniversità Politecnica delle Marchevia Brecce Bianche60131AnconaItaly
| | - Rolando Cannalire
- Current address: Department of PharmacyUniversity of Napoli “Federico II”via D. Montesano 4980131NapoliItaly
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Andrea Astolfi
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Gianmarco Mangiaterra
- Department of Life and Environmental SciencesUniversità Politecnica delle Marchevia Brecce Bianche60131AnconaItaly
| | - Tommaso Felicetti
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Salvatore Vaiasicca
- Department of Life and Environmental SciencesUniversità Politecnica delle Marchevia Brecce Bianche60131AnconaItaly
| | - Giada Cernicchi
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Serena Massari
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Giuseppe Manfroni
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Oriana Tabarrini
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Violetta Cecchetti
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Maria Letizia Barreca
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
| | - Francesca Biavasco
- Department of Life and Environmental SciencesUniversità Politecnica delle Marchevia Brecce Bianche60131AnconaItaly
| | - Stefano Sabatini
- Department of Pharmaceutical SciencesUniversità degli Studi di Perugiavia del Liceo 106123PerugiaItaly
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147
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Momin M, Mishra V, Gharat S, Omri A. Recent advancements in cellulose-based biomaterials for management of infected wounds. Expert Opin Drug Deliv 2021; 18:1741-1760. [PMID: 34605347 DOI: 10.1080/17425247.2021.1989407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
INTRODUCTION Chronic wounds are a substantial burden on the healthcare system. Their treatment requires advanced dressings, which can provide a moist wound environment, prevent bacterial infiltration, and act as a drug carrier. Cellulose is biocompatible, biodegradable, and can be functionalized according to specific requirements, which makes it a highly versatile biomaterial. Antimicrobial cellulose dressings are proving to be highly effective against infected wounds. AREAS COVERED This review briefly addresses the mechanism of wound healing and its pathophysiology. It also discusses wound infections, biofilm formation, and progressive emergence of drug-resistant bacteria in chronic wounds and the treatment strategies for such types of infected wounds. It also summarizes the general properties, method of production, and types of cellulose wound dressings. It explores recent studies and advancements regarding the use of cellulose and its derivatives in wound management. EXPERT OPINION Cellulose and its various functionalized derivatives represent a promising choice of wound dressing material. Cellulose-based dressings loaded with antimicrobials are very useful in controlling infection in a chronic wound. Recent studies showing its efficacy against drug-resistant bacteria make it a favorable choice for chronic wound infections. Further research and large-scale clinical trials are required for better clinical evidence of its efficiency.
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Affiliation(s)
- Munira Momin
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India.,SVKM's C B Patel Research Center for Chemistry and Biological Sciences, Mumbai, India
| | - Varsha Mishra
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Sankalp Gharat
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, India
| | - Abdelwahab Omri
- The Novel Drug and Vaccine Delivery Systems Facility, Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Canada
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148
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Salcedo-Sora JE, Robison ATR, Zaengle-Barone J, Franz KJ, Kell DB. Membrane Transporters Involved in the Antimicrobial Activities of Pyrithione in Escherichia coli. Molecules 2021; 26:molecules26195826. [PMID: 34641370 PMCID: PMC8510280 DOI: 10.3390/molecules26195826] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/16/2021] [Accepted: 09/20/2021] [Indexed: 02/06/2023] Open
Abstract
Pyrithione (2-mercaptopyridine-N-oxide) is a metal binding modified pyridine, the antibacterial activity of which was described over 60 years ago. The formulation of zinc-pyrithione is commonly used in the topical treatment of certain dermatological conditions. However, the characterisation of the cellular uptake of pyrithione has not been elucidated, although an unsubstantiated assumption has persisted that pyrithione and/or its metal complexes undergo a passive diffusion through cell membranes. Here, we have profiled specific membrane transporters from an unbiased interrogation of 532 E. coli strains of knockouts of genes encoding membrane proteins from the Keio collection. Two membrane transporters, FepC and MetQ, seemed involved in the uptake of pyrithione and its cognate metal complexes with copper, iron, and zinc. Additionally, the phenotypes displayed by CopA and ZntA knockouts suggested that these two metal effluxers drive the extrusion from the bacterial cell of potentially toxic levels of copper, and perhaps zinc, which hyperaccumulate as a function of pyrithione. The involvement of these distinct membrane transporters contributes to the understanding of the mechanisms of action of pyrithione specifically and highlights, more generally, the important role that membrane transporters play in facilitating the uptake of drugs, including metal-drug compounds.
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Affiliation(s)
- Jesus Enrique Salcedo-Sora
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown St., Liverpool L69 7ZB, UK
- Correspondence: (J.E.S.-S.); (K.J.F.); (D.B.K.)
| | - Amy T. R. Robison
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27708, USA; (A.T.R.R.); (J.Z.-B.)
| | - Jacqueline Zaengle-Barone
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27708, USA; (A.T.R.R.); (J.Z.-B.)
| | - Katherine J. Franz
- Department of Chemistry, Duke University, 124 Science Drive, Durham, NC 27708, USA; (A.T.R.R.); (J.Z.-B.)
- Correspondence: (J.E.S.-S.); (K.J.F.); (D.B.K.)
| | - Douglas B. Kell
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown St., Liverpool L69 7ZB, UK
- Novo Nordisk Foundation Centre for Biosustainability, Technical University of Denmark, Building 220, Kemitorvet, 2800 Kgs Lyngby, Denmark
- Correspondence: (J.E.S.-S.); (K.J.F.); (D.B.K.)
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149
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Krockow EM, Tarrant C, Colman AM. Prosociality in the social dilemma of antibiotic prescribing. Curr Opin Psychol 2021; 44:164-169. [PMID: 34662776 DOI: 10.1016/j.copsyc.2021.09.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/06/2021] [Accepted: 09/06/2021] [Indexed: 01/21/2023]
Abstract
Antibiotic prescribing can be conceptualised as a social dilemma in which the overuse of antibiotics, to minimise immediate risks to individual patients, results in a sub-optimal outcome for society (antimicrobial resistance) and increased risks to all patients in the long run. Doctors face the challenge of balancing the interests of individual patients against the collective good when prescribing antibiotics. While evidence suggests that doctors tend to prioritise individual interests over those of the collective, the conventional interpretation of such decisions as selfish may be inappropriate because most doctors are motivated by prosocial concerns about their patients. This review of antibiotic decision research provides a more nuanced understanding of prosociality in the context of the social dilemma of antibiotic prescribing.
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Affiliation(s)
- Eva M Krockow
- Department of Neuroscience, Psychology and Behaviour, University of Leicester, University Road, Leicester, LE1 7RK, United Kingdom.
| | - Carolyn Tarrant
- Department of Health Sciences, University of Leicester, University Road, Leicester, LE1 7RK, United Kingdom
| | - Andrew M Colman
- Department of Neuroscience, Psychology and Behaviour, University of Leicester, University Road, Leicester, LE1 7RK, United Kingdom
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150
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Kell DB. The Transporter-Mediated Cellular Uptake and Efflux of Pharmaceutical Drugs and Biotechnology Products: How and Why Phospholipid Bilayer Transport Is Negligible in Real Biomembranes. Molecules 2021; 26:5629. [PMID: 34577099 PMCID: PMC8470029 DOI: 10.3390/molecules26185629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/03/2021] [Accepted: 09/14/2021] [Indexed: 12/12/2022] Open
Abstract
Over the years, my colleagues and I have come to realise that the likelihood of pharmaceutical drugs being able to diffuse through whatever unhindered phospholipid bilayer may exist in intact biological membranes in vivo is vanishingly low. This is because (i) most real biomembranes are mostly protein, not lipid, (ii) unlike purely lipid bilayers that can form transient aqueous channels, the high concentrations of proteins serve to stop such activity, (iii) natural evolution long ago selected against transport methods that just let any undesirable products enter a cell, (iv) transporters have now been identified for all kinds of molecules (even water) that were once thought not to require them, (v) many experiments show a massive variation in the uptake of drugs between different cells, tissues, and organisms, that cannot be explained if lipid bilayer transport is significant or if efflux were the only differentiator, and (vi) many experiments that manipulate the expression level of individual transporters as an independent variable demonstrate their role in drug and nutrient uptake (including in cytotoxicity or adverse drug reactions). This makes such transporters valuable both as a means of targeting drugs (not least anti-infectives) to selected cells or tissues and also as drug targets. The same considerations apply to the exploitation of substrate uptake and product efflux transporters in biotechnology. We are also beginning to recognise that transporters are more promiscuous, and antiporter activity is much more widespread, than had been realised, and that such processes are adaptive (i.e., were selected by natural evolution). The purpose of the present review is to summarise the above, and to rehearse and update readers on recent developments. These developments lead us to retain and indeed to strengthen our contention that for transmembrane pharmaceutical drug transport "phospholipid bilayer transport is negligible".
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Affiliation(s)
- Douglas B. Kell
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Crown St, Liverpool L69 7ZB, UK;
- Novo Nordisk Foundation Centre for Biosustainability, Technical University of Denmark, Building 220, Kemitorvet, 2800 Kgs Lyngby, Denmark
- Mellizyme Biotechnology Ltd., IC1, Liverpool Science Park, Mount Pleasant, Liverpool L3 5TF, UK
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