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Huynh TQ, Tran NBV, Pham TTV, Le VBT, Truong TP, Huynh VA, Tong TH, Trinh TTL, Nguyen VD, Pham LNM, Nguyen TH, Lin Q, Lim TK, Lin Q, Nguyen TTH. Adaptive response of Pseudomonas aeruginosa under serial ciprofloxacin exposure. MICROBIOLOGY (READING, ENGLAND) 2024; 170:001443. [PMID: 38568202 PMCID: PMC11084610 DOI: 10.1099/mic.0.001443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/14/2024] [Indexed: 04/05/2024]
Abstract
Understanding the evolution of antibiotic resistance is important for combating drug-resistant bacteria. In this work, we investigated the adaptive response of Pseudomonas aeruginosa to ciprofloxacin. Ciprofloxacin-susceptible P. aeruginosa ATCC 9027, CIP-E1 (P. aeruginosa ATCC 9027 exposed to ciprofloxacin for 14 days) and CIP-E2 (CIP-E1 cultured in antibiotic-free broth for 10 days) were compared. Phenotypic responses including cell morphology, antibiotic susceptibility, and production of pyoverdine, pyocyanin and rhamnolipid were assessed. Proteomic responses were evaluated using comparative iTRAQ labelling LC-MS/MS to identify differentially expressed proteins (DEPs). Expression of associated genes coding for notable DEPs and their related regulatory genes were checked using quantitative reverse transcriptase PCR. CIP-E1 displayed a heterogeneous morphology, featuring both filamentous cells and cells with reduced length and width. By contrast, although filaments were not present, CIP-E2 still exhibited size reduction. Considering the MIC values, ciprofloxacin-exposed strains developed resistance to fluoroquinolone antibiotics but maintained susceptibility to other antibiotic classes, except for carbapenems. Pyoverdine and pyocyanin production showed insignificant decreases, whereas there was a significant decrease in rhamnolipid production. A total of 1039 proteins were identified, of which approximately 25 % were DEPs. In general, there were more downregulated proteins than upregulated proteins. Noted changes included decreased OprD and PilP, and increased MexEF-OprN, MvaT and Vfr, as well as proteins of ribosome machinery and metabolism clusters. Gene expression analysis confirmed the proteomic data and indicated the downregulation of rpoB and rpoS. In summary, the response to CIP involved approximately a quarter of the proteome, primarily associated with ribosome machinery and metabolic processes. Potential targets for bacterial interference encompassed outer membrane proteins and global regulators, such as MvaT.
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Affiliation(s)
- Thuc Quyen Huynh
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Nguyen Bao Vy Tran
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Thi Thuy Vy Pham
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Vo Bao Tran Le
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | | | - Van An Huynh
- Gia Dinh People’s Hospital, Ho Chi Minh City, Vietnam
| | - Thi Hang Tong
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Thi Truc Ly Trinh
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Van Dung Nguyen
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
| | - Le Nhat Minh Pham
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
- Cho Ray Hospital, Ho Chi Minh City, Vietnam
| | - Thi Hiep Nguyen
- Viet Nam National University, Ho Chi Minh City, Vietnam
- School of Biomedical Engineering, International University, Ho Chi Minh City, Vietnam
| | - Qifeng Lin
- Protein and Proteomics Centre, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Teck Kwang Lim
- Protein and Proteomics Centre, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Qingsong Lin
- Protein and Proteomics Centre, Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | - Thi Thu Hoai Nguyen
- Research Center for Infectious Diseases, International University, Ho Chi Minh City, Vietnam
- School of Biotechnology, International University, Ho Chi Minh City, Vietnam
- Viet Nam National University, Ho Chi Minh City, Vietnam
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2
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Rigueira LL, Perecmanis S. Concerns about the use of antimicrobials in swine herds and alternative trends. Transl Anim Sci 2024; 8:txae039. [PMID: 38685989 PMCID: PMC11056889 DOI: 10.1093/tas/txae039] [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: 01/31/2024] [Accepted: 03/15/2024] [Indexed: 05/02/2024] Open
Abstract
Pig productivity in Brazil has advanced a lot in recent decades. Specialized breeds are more vulnerable to pathogens, which has boosted the use of antimicrobials by farmers. The selective pressure generated favors the emergence of resistant bacteria, which compromises the effectiveness of this treatment and limits therapeutic options. In addition to increasing costs and mortality rates in the production system, public awareness of this issue has increased. The authorities have imposed restrictive measures to control the use of antimicrobials and have banned their use as growth promoters. This literature review highlights biosecurity and animal welfare to prevent pig diseases. Hence, we describe alternatives to the use of antimicrobials in pig production for the selection of effective non-antibiotic feed additives that help maintain good health and help the pig resist disease when infection occurs.
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Affiliation(s)
- Luciana L Rigueira
- Department of Animal Health, Brasília University, 70910-900, Brasília, Brazil
- Secretary of Agriculture of Federal District, 70770-914, Brasília, Brazil
| | - Simone Perecmanis
- Department of Animal Health, Brasília University, 70910-900, Brasília, Brazil
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Beč A, Racané L, Tomić T, Persoons L, Daelemans D, Banjanac M, Radovanović V, Hranjec M. Novel hydroxy- and amidino-substituted benzimidazoles and benzothiazoles as antibacterial and antiproliferative agents. Future Med Chem 2023; 15:1251-1272. [PMID: 37551679 DOI: 10.4155/fmc-2023-0154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023] Open
Abstract
Aim: The aim was synthesis of novel benzazoles bearing amidino and 2-hydroxyphenyl substituents to explore their biological activity. Methods: Condensation of 5-substituted salicylaldehydes and intermediates gave new benzazoles by previously published and developed procedures, which were tested for antibacterial and antiproliferative activity in vitro. Results: The best antibacterial activity showed benzimidazole with 2-imidazolinyl group 27 and benzothiazole with an unsubstituted amidine 48 (minimum inhibitory concentration 8 μg/ml). Benzothiazole 53 proved most potent at inhibiting proliferation of all cancer cells (IC50: 1.2-2.0 μM). Conclusion: Most active compounds have been recognized as lead compounds for additional optimization to improve their biological activity. The type of amidine moiety markedly influenced the biological activity. Benzothiazoles showed improved antiproliferative activity in comparison to benzimidazoles.
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Affiliation(s)
- Anja Beč
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, HR-10000, Croatia
| | - Livio Racané
- Department of Applied Chemistry, Faculty of Textile Technology, University of Zagreb, Zagreb, HR-10000, Croatia
| | - Teo Tomić
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, HR-10000, Croatia
| | - Leentje Persoons
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Leuven, 3000, Belgium
| | - Dirk Daelemans
- KU Leuven, Department of Microbiology, Immunology and Transplantation, Rega Institute, Leuven, 3000, Belgium
| | | | | | - Marijana Hranjec
- Department of Organic Chemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Zagreb, HR-10000, Croatia
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4
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Distribution and Characterization of Antimicrobial Resistant Pathogens in a Pig Farm, Slaughterhouse, Meat Processing Plant, and in Retail Stores. Microorganisms 2022; 10:microorganisms10112252. [DOI: 10.3390/microorganisms10112252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
The emergence of antibiotic resistance in foodborne pathogens isolated from meat pro-ducts and their producing environment has been an increasing and leading threat to public health. The aim of the study was to identify pathogens and their antimicrobial resistance isolated from pig production to pork meat distribution phases. Through this study, food spoilage and foodborne or clinical pathogenic bacteria were isolated and identified from pork (belly and neck) meat product and its related environmental samples that include pig swabs, diets, feces, liquid manure, workers’ gloves, dust fan swabs, carcass swabs, floor swabs, and drain water in the affiliated farm, slaughterhouse, meat processing plant, and in retail stores. All carcasses at the slaughterhouse and meat products at the meat processing plant were tracked from pigs at a targeted farm. Nine different selective media agars were used to effectively isolate various pathogenic bacteria. A total of 283 presumptive pathogenic bacteria isolated from 126 samples were selected and identified using MALDI-ToF MS. Twenty-three important foodborne pathogens were identified, and some of them, Shiga-toxin-producing E. coli (STEC), Listeria monocytogenes, Staphylococcus aureus, and Yersinia enterocolitica, were further confirmed using PCR. The PFGE patterns of 12 STEC isolates were grouped by sample source or site. All the foodborne pathogens used in the study were not resistant to amoxicillin/clavulanate, ciprofloxacin, and gentamicin, whereas some of the STEC, L. monocytogenes, and S. aureus isolates were resistant to various antibiotics, including ampicillin, erythromycin, tetracycline, and vancomycin. The most common antimicrobial resistance pattern in the pathogenic STEC isolates was AMP-KAN-STR-SXT-TET. Consequently, this study provides valuable information for the distribution of antimicrobial-resistant pathogens along the pork meat production chain and can assist farmers and stakeholders to develop a systematic strategy for reducing the current emergence and spread of antimicrobial resistance in the different phases of pig production and distribution.
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Hemez C, Clarelli F, Palmer AC, Bleis C, Abel S, Chindelevitch L, Cohen T, Abel zur Wiesch P. Mechanisms of antibiotic action shape the fitness landscapes of resistance mutations. Comput Struct Biotechnol J 2022; 20:4688-4703. [PMID: 36147681 PMCID: PMC9463365 DOI: 10.1016/j.csbj.2022.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 08/12/2022] [Accepted: 08/12/2022] [Indexed: 11/15/2022] Open
Abstract
Antibiotic-resistant pathogens are a major public health threat. A deeper understanding of how an antibiotic's mechanism of action influences the emergence of resistance would aid in the design of new drugs and help to preserve the effectiveness of existing ones. To this end, we developed a model that links bacterial population dynamics with antibiotic-target binding kinetics. Our approach allows us to derive mechanistic insights on drug activity from population-scale experimental data and to quantify the interplay between drug mechanism and resistance selection. We find that both bacteriostatic and bactericidal agents can be equally effective at suppressing the selection of resistant mutants, but that key determinants of resistance selection are the relationships between the number of drug-inactivated targets within a cell and the rates of cellular growth and death. We also show that heterogeneous drug-target binding within a population enables resistant bacteria to evolve fitness-improving secondary mutations even when drug doses remain above the resistant strain's minimum inhibitory concentration. Our work suggests that antibiotic doses beyond this "secondary mutation selection window" could safeguard against the emergence of high-fitness resistant strains during treatment.
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Affiliation(s)
- Colin Hemez
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
- Graduate Program in Biophysics, Harvard University, Boston, MA 02115, USA
- Corresponding authors at: Broad Institute, 75 Ames St, Room 3035, Cambridge, MA 02412, USA (C. Hemez). Department of Pharmacy, UiT – The Arctic University of Norway, 9019 Tromsø, Norway (P. Abel zur Wiesch).
| | - Fabrizio Clarelli
- Department of Pharmacy, UiT – The Arctic University of Norway, 9019 Tromsø, Norway
- Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Adam C. Palmer
- Department of Pharmacology, Computational Medicine Program, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Christina Bleis
- Department of Pharmacy, UiT – The Arctic University of Norway, 9019 Tromsø, Norway
- Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA
| | - Sören Abel
- Department of Pharmacy, UiT – The Arctic University of Norway, 9019 Tromsø, Norway
- Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA
- Division of Infection Control, Norwegian Institute of Public Health, Oslo 0318, Norway
| | - Leonid Chindelevitch
- Department of Infectious Disease Epidemiology, Imperial College, London SW7 2AZ, UK
| | - Theodore Cohen
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06520, USA
| | - Pia Abel zur Wiesch
- Department of Pharmacy, UiT – The Arctic University of Norway, 9019 Tromsø, Norway
- Center for Infectious Disease Dynamics, Department of Biology, Pennsylvania State University, University Park, PA 16802, USA
- Division of Infection Control, Norwegian Institute of Public Health, Oslo 0318, Norway
- Corresponding authors at: Broad Institute, 75 Ames St, Room 3035, Cambridge, MA 02412, USA (C. Hemez). Department of Pharmacy, UiT – The Arctic University of Norway, 9019 Tromsø, Norway (P. Abel zur Wiesch).
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6
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Asadi Z, Ghanbarpour R, Kalantar-Neyestanaki D, Alizade H. Determination of extended-spectrum β-lactamase producing and hybrid pathotypes of Escherichia coli isolates from diarrheic samples. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Boles JE, Williams GT, Allen N, White LJ, Hilton KLF, Popoola PIA, Mulvihill DP, Hiscock JR. Anionic self‐assembling supramolecular enhancers of antimicrobial efficacy against Gram‐negative bacteria. ADVANCED THERAPEUTICS 2022. [DOI: 10.1002/adtp.202200024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jessica E. Boles
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
- School of Biosciences University of Kent Canterbury Kent CT2 7NJ UK
| | - George T. Williams
- School of Chemistry University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Nyasha Allen
- School of Biosciences University of Kent Canterbury Kent CT2 7NJ UK
| | - Lisa J. White
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
| | - Kira L. F. Hilton
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
| | | | | | - Jennifer R. Hiscock
- School of Chemistry and Forensics University of Kent Canterbury Kent CT2 7NH UK
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8
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Abstract
Antimicrobial resistance is one of the most serious threats to medical science. Food supply is recognized as a potential source of resistant bacteria, leading to the development of surveillance programs targeting primarily poultry, pork, and beef. These programs are limited in scope, not only in the commodities tested, but also in the organisms targeted (Escherichia coli, Salmonella, and Campylobacter); consequently, neither the breadth of food products available nor the organisms that may harbour clinically relevant and (or) mobile resistance genes are identified. Furthermore, there is an inadequate understanding of how international trade in food products contributes to the global dissemination of resistance. This is despite the recognized role of international travel in disseminating antimicrobial-resistant organisms, notably New Delhi metallo-beta-lactamase. An increasing number of studies describing antimicrobial-resistant organisms in a variety of imported foods are summarized in this review.
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Affiliation(s)
- Dongyun Jung
- Department of Food Science and Agricultural Chemistry, McGill University, Montreal, Quebec, Canada
| | - Beverly J Morrison
- Department of Ecosystem and Public Health, University of Calgary, Calgary, Alberta, Canada
| | - Joseph E Rubin
- Department of Veterinary Microbiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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9
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Bacterial Resistance to Antimicrobial Agents. Antibiotics (Basel) 2021; 10:antibiotics10050593. [PMID: 34067579 PMCID: PMC8157006 DOI: 10.3390/antibiotics10050593] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 12/26/2022] Open
Abstract
Bacterial pathogens as causative agents of infection constitute an alarming concern in the public health sector. In particular, bacteria with resistance to multiple antimicrobial agents can confound chemotherapeutic efficacy towards infectious diseases. Multidrug-resistant bacteria harbor various molecular and cellular mechanisms for antimicrobial resistance. These antimicrobial resistance mechanisms include active antimicrobial efflux, reduced drug entry into cells of pathogens, enzymatic metabolism of antimicrobial agents to inactive products, biofilm formation, altered drug targets, and protection of antimicrobial targets. These microbial systems represent suitable focuses for investigation to establish the means for their circumvention and to reestablish therapeutic effectiveness. This review briefly summarizes the various antimicrobial resistance mechanisms that are harbored within infectious bacteria.
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10
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Jing J, Zhang R, Wang Y, Tang S, Yang H, Du L, Lin B, Shao L, Zhang F, Xue P. Less polar ginsenosides have better protective effects on mice infected by Listeria monocytogenes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 213:112065. [PMID: 33636464 DOI: 10.1016/j.ecoenv.2021.112065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
Listeria monocytogenes widely exists in the natural environment and does great harm, which can cause worldwide public safety problem. Infection with L. monocytogenes can cause rapid death of Kupffer cell (KCs) in liver tissue and liver damage. American ginseng saponins is a natural compound in plants, which has great potential in inhibiting L. monocytogenes infection. Therefore, American ginseng stem-leaf saponins (AGS) and American ginseng heat-transformed saponins (HTS) were used as raw materials to study their bacteriostatic experiments in vivo and in vitro. In this experiment, female Kunming mice were randomly divided into five groups: control group, negative group, AGS group, HTS group (10 mg/kg/day in an equal volume via gastric administration) and penicillin group, each group containing six mice. Profiles AGS and HTS components were evaluated by high-performance liquid chromatography (HPLC) analysis. The bacteriostatic effect of AGS and HTS on L. monocytogenes was evaluated by inhibition zone test, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The bacteriostatic effect of AGS and HTS pretreatment on mice infected with L. monocytogenes were studies by animal experimental. The results showed that the content of polar saponins in AGS was 0.81 ± 0.003 mg/mg, less polar saponins was 0.08 ± 0.02 mg/mg, the content of polar saponins in HTS was 0.10 ± 0.01 mg/mg, less polar saponins was 0.76 ± 0.02 mg/mg. The in vitro bacteriostatic diameter of HTS (16.6 ± 0.8 mm) is large than that of AGS (10.2 ± 1.2 mm). AGS and HTS pretreatment could reduce the colony numbers in the livers of mice infected with Listeria monocytogenes. The levels of alanine aminotransferase (ALT), IL-1β, IL-6, TNF-α and IFN-γ in the livers of mice in the pretreatment group were significantly lower than those in the negative group. There were obvious leukoplakia, calcification and other liver damage on the liver surface in the negative control group, and obvious inflammatory cell infiltration in HE sections. AGS and HTS pretreatment can reduce liver injury caused by L. monocytogenes and protect the liver. Compared with AGS, HTS has higher content of less polar saponins and better bacteriostatic effect in vitro. The count of bacterial in liver tissue of HTS group was significantly lower, the survival rate was significantly higher than that of AGS group. Less polar saponins had better bacteriostatic effect. Collectively, less polar saponins pretreatment has a protective effect on mice infected with L. monocytogenes, to which alleviated liver damage, improved anti-inflammatory ability and immunity of the body, protected liver may contribute.
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Affiliation(s)
- Jinjin Jing
- School of Public Health, Weifang Medical University, Weifang 261053, People's Republic of China
| | - Ruoyu Zhang
- School of Public Health, Weifang Medical University, Weifang 261053, People's Republic of China
| | - Yunhai Wang
- Affiliated Hospital of Weifang Medical University, Weifang 261053, People's Republic of China
| | - Shaojian Tang
- School of Pharmacy, Weifang Medical University, Weifang 261053, People's Republic of China
| | - Hanchao Yang
- Affiliated Hospital of Weifang Medical University, Weifang 261053, People's Republic of China
| | - Lidong Du
- Clinical Medical Colleges, Weifang Medical University, Weifang 261053, People's Republic of China
| | - Bingjie Lin
- School of Public Health, Weifang Medical University, Weifang 261053, People's Republic of China
| | - Lijun Shao
- School of Public Health, Weifang Medical University, Weifang 261053, People's Republic of China
| | - Fengxiang Zhang
- School of Public Health, Weifang Medical University, Weifang 261053, People's Republic of China
| | - Peng Xue
- School of Public Health, Weifang Medical University, Weifang 261053, People's Republic of China.
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11
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Lee GW, Ryu S, Park J, Lee EJ, Lee KJ, Tae J, Hwang Y, Kim DS. Changes of antibiotic prescribing pattern and its resistance to E. Coli in South Korea: a 12-year retrospective observational study. Sci Rep 2021; 11:5658. [PMID: 33707496 PMCID: PMC7970963 DOI: 10.1038/s41598-021-84450-z] [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: 10/28/2020] [Accepted: 02/04/2021] [Indexed: 11/23/2022] Open
Abstract
In the present study, we investigated the pattern of changes in antibiotic prescription and antimicrobial resistance (AMR) in Escherichia coli in South Korea between 2007 and 2018. We collected data related to antibiotic prescription and AMR in E. coli from the national surveillance system. We used the Mann–Kendall test and Spearman’s correlation to identify the trends of antibiotic prescription and AMR in E. coli and to examine the relationship between them, respectively. Although we noted a significant decreasing trend of ampicillin and gentamicin prescriptions in all medical institutions, we identified a higher level of AMR in long-term care facilities than in other medical institutions. We did not identify a significant positive correlation between ampicillin and gentamicin prescriptions and their resistance in E. coli. However, we found a significant positive correlation between cefotaxime prescription and its resistance in E. coli in hospitals, long-term care facilities, and clinics. Our results strongly suggest that long-term care facilities in South Korea have the potential to sustain AMR epidemics and that more efforts are needed to curb AMR in E. coli. Further epidemiological studies using enhanced AMR surveillance are warranted.
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Affiliation(s)
- Geun Woo Lee
- Pharmaceutical and Medical Technology Research Team, Department of Research, Health Insurance Review and Assessment Service, Wonju, South Korea
| | - Sukhyun Ryu
- Department of Preventive Medicine, Konyang University College of Medicine, Daejeon, South Korea
| | - Juhee Park
- Pharmaceutical and Medical Technology Research Team, Department of Research, Health Insurance Review and Assessment Service, Wonju, South Korea
| | - Eun Jee Lee
- Pharmaceutical and Medical Technology Research Team, Department of Research, Health Insurance Review and Assessment Service, Wonju, South Korea
| | - Kwang Jun Lee
- National Institute of Health, Korean Centers for Disease Control and Prevention, Osong, South Korea
| | - Jungyeon Tae
- Department of Preventive Medicine, Konyang University College of Medicine, Daejeon, South Korea
| | - Youngsik Hwang
- Department of Preventive Medicine, Konyang University College of Medicine, Daejeon, South Korea
| | - Dong-Sook Kim
- Pharmaceutical and Medical Technology Research Team, Department of Research, Health Insurance Review and Assessment Service, Wonju, South Korea.
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12
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Ozdemirel HO, Ulusal D, Kucukyildirim Celik S. Streptomycin and nalidixic acid elevate the spontaneous genome-wide mutation rate in Escherichia coli. Genetica 2021; 149:73-80. [PMID: 33502702 DOI: 10.1007/s10709-021-00114-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 01/13/2021] [Indexed: 11/27/2022]
Abstract
Since antibiotic resistance is a growing public health problem worldwide, it is important to understand how antibiotics and spontaneous mutations cooperate and shape the genome-wide mutation rate and spectrum. Here, we quantitatively evaluate genome-wide mutational profiles of Escherichia coli after long-term subinhibitory exposure to a broad-spectrum (streptomycin) and a narrow-spectrum antibiotic (nalidixic acid), using a mutation accumulation design combined with whole-genome resequencing of replicate lines as a mutagenicity test. We determined that, while the genome-wide mutation rate is slightly higher in the streptomycin-treated lines compared to the control lines, there is a significant increase in the nalidixic acid-treated lines. Our findings suggest that both broad and narrow-spectrum antibiotics may elevate the mutation rates in E. coli, but mechanisms of action may affect the consequence, thus contribute to accelerating the rate of adaptation and conferring antibiotic resistance.
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Affiliation(s)
| | - Dilara Ulusal
- Department of Biology, Faculty of Science, Hacettepe University, Ankara, Turkey
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13
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Antibiotic resistance related to biofilm formation in Streptococcus suis. Appl Microbiol Biotechnol 2020; 104:8649-8660. [PMID: 32897417 DOI: 10.1007/s00253-020-10873-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 08/23/2020] [Accepted: 08/31/2020] [Indexed: 12/13/2022]
Abstract
Streptococcus suis (S. suis) is an important zoonotic agent, which seriously impacts the pig industry and human health in various countries. Biofilm formation is likely contributing to the virulence and drug resistance in S. suis. A better knowledge of biofilm formation as well as to biofilm-dependent drug resistance mechanisms in S. suis can be of great significance for the prevention and treatment of S. suis infections. This literature review updates the latest scientific data related to biofilm formation in S. suis and its impact on drug tolerance and resistance.Key points• Biofilm formation is the important reasons for drug resistance of SS infections.• The review includes the regulatory mechanism of SS biofilm formation.• The review includes the drug resistance mechanisms of SS biofilm.
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14
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Wang L, Huang Y, Yin G, Wang J, Wang P, Chen ZY, Wang T, Ren G. Antimicrobial activities of Asian ginseng, American ginseng, and notoginseng. Phytother Res 2019; 34:1226-1236. [PMID: 31885119 DOI: 10.1002/ptr.6605] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/26/2019] [Accepted: 12/07/2019] [Indexed: 12/15/2022]
Abstract
Asian ginseng (Panax ginseng C.A. Meyer), American ginseng (Panax quinquefolius) and notoginseng (Panax notoginseng) are the three most commonly used ginseng botanicals in the world. With the increasing interests on antimicrobial properties of plants, the antimicrobial activities of ginseng species have been investigated by a number of researchers worldwide. This overview interprets our present knowledge of the antimicrobial activities of the three ginseng species and some of their bioactive components against pathogenic bacteria (Pseudomonas aeruginosa, Helicobacter pylori, Staphylococcus aureus, Escherichia coli, Propionibacterium acnes, et al.) and fungi (Candida albicans, Fusarium oxysporum, et al). Ginsenosides, polysaccharides, essential oil, proteins, and panaxytriol are all might responsible for the antimicrobial activities of ginseng. The antimicrobial mechanisms of ginseng components could be summarized to the following points: (a) inhibit the microbial motility and quorum-sensing ability; (b) affect the formation of biofilms and destroy the mature biofilms, which can weaken the infection ability of the microbes; (c) perturb membrane lipid bilayers, thus causing the formation of pores, leakages of cell constituents and eventually cell death; (d) stimulate of the immune system and attenuate microbes induced apoptosis, inflammation, and DNA damages, which can protect or help the host fight against microbial infections; and (e) inhibit the efflux of antibiotics that can descend the drug resistance of the microbial. The collected information might facilitate and guide further studies needed to optimize the use of ginseng and their components to improve microbial food safety and prevent or treat animal and human infections.
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Affiliation(s)
- Lijun Wang
- Shenzhen Institute for Drug Control, Shenzhen, China
| | - Yang Huang
- Shenzhen Institute for Drug Control, Shenzhen, China
| | - Guo Yin
- Shenzhen Institute for Drug Control, Shenzhen, China
| | - Jue Wang
- Shenzhen Institute for Drug Control, Shenzhen, China
| | - Ping Wang
- Shenzhen Institute for Drug Control, Shenzhen, China
| | - Zhen-Yu Chen
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong
| | - Tiejie Wang
- Shenzhen Institute for Drug Control, Shenzhen, China
| | - Guixing Ren
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Hansen LS, Lykkegaard J, Thomsen JL, Hansen MP. Acute lower respiratory tract infections: Symptoms, findings and management in Danish general practice. Eur J Gen Pract 2019; 26:14-20. [PMID: 31650886 PMCID: PMC7034054 DOI: 10.1080/13814788.2019.1674279] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background: Acute lower respiratory tract infections (LRTIs) are among the most common infections managed in general practice. Objectives: To describe differences in reported symptoms, findings and management of patients diagnosed with acute LRTIs, and to explore possible associations between these findings and being diagnosed with pneumonia. Methods: During one winter season (2017 or 2018), a prospective registration of patients diagnosed with either acute bronchitis (ICPC-2: R78) or pneumonia (ICPC-2: R81) was conducted in Danish general practice for 20 days. A 42 item registration chart was filled in for each patient. Descriptive statistics, Pearson's chi-square test and multiple logistic regressions were used for data analysis. Results: In total, 70 general practices participated with 1384 patients registered. Patients diagnosed with pneumonia were more often reported as having a fever, dyspnoea, increased purulent sputum, abnormal pulmonary auscultation/chest retractions, and were more often assessed as unwell by the healthcare professional, than those diagnosed with acute bronchitis. Very few patients had a chest X-ray. Contrary, most patients had a C-reactive protein (CRP) test performed (pneumonia: 83%; acute bronchitis: 71%). Respectively, 93% and 20% of patients were treated with antibiotics. Having a fever, an abnormal pulmonary auscultation/chest retractions or being assessed as unwell increased the likelihood of the diagnosis pneumonia at least fivefold. Even a slightly elevated CRP (≥11 mg/L) was positively associated with being diagnosed with pneumonia. Conclusion: Danish healthcare professionals are highly influenced by symptoms, signs and CRP tests when diagnosing patients with acute LRTIs in general practice.
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Affiliation(s)
| | - Jesper Lykkegaard
- Audit Project Odense, Research Unit of General Practice, Institute of Public Health, University of Southern Denmark, Odense, Denmark
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Ma LL, Qiu Y, Song MN, Chen Y, Qu JX, Li BH, Zhao MJ, Liu XC. Clinical Trial Registration and Reporting: Drug Therapy and Prevention of Cardiac-Related Infections. Front Pharmacol 2019; 10:757. [PMID: 31333470 PMCID: PMC6624234 DOI: 10.3389/fphar.2019.00757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 06/11/2019] [Indexed: 12/18/2022] Open
Abstract
Objective: Clinical trials are the source of evidence. ClinicalTrials.gov is valuable for analyzing current conditions. Until now, the state of drug interventions for heart infections is unknown. The purpose of this study was to comprehensively assess the characteristics of trials on cardiac-related infections and the status of drug interventions. Methods: The website ClinicalTrials.gov was used to obtain all registered clinical trials on drug interventions for cardiac-related infections as of February 16, 2019. All registration studies were collected, regardless of their recruitment status, research results, and research type. Registration information, results, and weblink-publications of those trials were analyzed. Results: A total of 45 eligible trials were evaluated and 86.7% of them began from or after 2008 while 91.1% of them adopted interventional study design. Of all trials, 35.6% were completed and 15.6% terminated. Besides, 62.2% of interventional clinical trials recruited more than 100 subjects. Meanwhile, 86.7% of the eligible trials included adult subjects only. Of intervention trials, 65.8% were in the third or fourth phase; 78.1% adopted randomized parallel assignment, containing two groups; 53.6% were masking, and 61.0% described treatment. Moreover, 41.5% of the trials were conducted in North America while 29.3% in Europe. Sponsors for 40.0% of the studies were from the industry. Furthermore, 48.9% of the trials mentioned information on monitoring committees, 24.4% have been published online, and 13.3% have uploaded their results. Drugs for treatments mainly contained antibiotics, among which glycopeptides, β-lactams, and lipopeptides were the most commonly studied ones in experimental group, with the former ones more common. Additionally, 16.2% of the trials evaluated new antimicrobials. Conclusions: Most clinical trials on cardiac-related infections registered at ClinicalTrials.gov were interventional randomized controlled trials (RCTs) for treatment. Most drugs focused in trials were old antibiotics, and few trials reported valid results. It is necessary to strengthen supervision over improvements in results, and to combine antibacterial activity with drug delivery regimens to achieve optimal clinical outcomes.
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Affiliation(s)
- Lin-Lu Ma
- Department of Cardiology, First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China.,Center for Evidence-Based and Translational Medicine, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Yang Qiu
- Cardiovascular Department, Kaifeng Central Hospital, Kaifeng, China
| | - Mei-Na Song
- Department of Nursing, Beijing Tsinghua Changgung Hospital, Beijing, China
| | - Yun Chen
- Department of Cardiology, First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China.,Center for Evidence-Based and Translational Medicine, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Jian-Xin Qu
- Department of Cardiology, First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China.,Center for Evidence-Based and Translational Medicine, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Bing-Hui Li
- Center for Evidence-Based Medicine, Institute of Evidence-Based Medicine and Knowledge Translation, Henan University, Kaifeng, China
| | - Ming-Juan Zhao
- Center for Evidence-Based Medicine, Institute of Evidence-Based Medicine and Knowledge Translation, Henan University, Kaifeng, China.,Department of Cardiology, The First Affiliated Hospital of Henan University, Kaifeng, China
| | - Xin-Can Liu
- Department of Cardiology, First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China.,Center for Evidence-Based and Translational Medicine, Henan University of Traditional Chinese Medicine, Zhengzhou, China
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Almakki A, Jumas-Bilak E, Marchandin H, Licznar-Fajardo P. Antibiotic resistance in urban runoff. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 667:64-76. [PMID: 30826682 DOI: 10.1016/j.scitotenv.2019.02.183] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 02/11/2019] [Accepted: 02/12/2019] [Indexed: 05/24/2023]
Abstract
Aquatic ecosystems subjected to anthropogenic pressures are places of rapid evolution of microbial communities and likely hotspots for selection and emergence of antibiotic resistant bacteria. In urban settings, water quality and the risk of infection are generally assessed in sewers and in effluents of wastewater treatment plants. Physical and chemical parameters as well as the presence of antibiotics, antibiotic-resistant bacteria and genes of resistance are driven by urban activities, with adverse effects on aquatic ecosystems. In this paper we review the environmental pressures exerted on bacterial communities in urban runoff waters and discuss the impact of these settings on antibiotic resistance. Considering the worrisome epidemiology of infectious diseases and estimated mortality due to antimicrobial resistance in the coming decades, there is an urgent need to identify all environmental reservoirs of resistant bacteria and resistance genes to complete our knowledge of the epidemiological cycle and of the dynamics of urban antibiotic resistance.
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Affiliation(s)
- Ayad Almakki
- HSM, Univ Montpellier, IRD, CNRS, Montpellier, France; Department of Clinical Laboratory Science, College of Pharmacy, University of Basrah, Iraq
| | - Estelle Jumas-Bilak
- HSM, Univ Montpellier, IRD, CNRS, Département d'Hygiène Hospitalière, CHU de Montpellier, Montpellier, France
| | - Hélène Marchandin
- HSM, Univ Montpellier, IRD, CNRS, Montpellier, France, Département de Microbiologie, CHU Nîmes, Nîmes, France
| | - Patricia Licznar-Fajardo
- HSM, Univ Montpellier, IRD, CNRS, Département d'Hygiène Hospitalière, CHU de Montpellier, Montpellier, France.
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18
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Wimalasena SHMP, Pathirana HNKS, Shin GW, De Silva BCJ, Hossain S, Heo GJ. Characterization of Quinolone-Resistant Determinants in Tribe Proteeae Isolated from Pet Turtles with High Prevalence of qnrD and Novel gyrB Mutations. Microb Drug Resist 2018; 25:611-618. [PMID: 30427748 DOI: 10.1089/mdr.2018.0041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Development of antibiotic resistance in bacteria has challenged significantly in both veterinary and human medicine. In this study, we analyzed the potential risk of pet turtles harboring tribe Proteeae as a source of quinolone-resistant determinants, including plasmid-mediated quinolone resistance (PMQR) genes and target gene alterations in the quinolone resistance-determining region (QRDR). Antimicrobial susceptibility of 54 Proteeae isolates against ciprofloxacin, ofloxacin, levofloxacin, and nalidixic acid was examined. The PMQR genes and QRDR alterations were identified using conventional PCR assays and sequencing. Four isolates were resistant to all quinolones tested in this study. Nine isolates showed resistance to nalidixic acid and showed either intermediate resistance or susceptibility to other tested quinolones. All isolates resistant to one or more tested quinolones harbored mutations in gyrB and some also had gyrA and parC mutations. Of 54, 12 Proteeae isolates displayed the novel E466D, N440T, Q411S, and F417L mutations in gyrB. Among the PMQR genes, 41 (76%) isolates harbored the qnrD gene with the highest prevalence, whereas aac(6')Ib-cr, qnrS, qnrA, and qnrB genes were detected in 28 (52%), 9 (17.0%), 7 (13.0%), and 1 (1.9%) study isolates, respectively. The QRDR analysis of selected mutants revealed that increasing quinolone selective pressure led to a predominance of gyrA mutants. All results indicate that a healthy pet turtle can play as a potential reservoir for quinolone-resistant Proteeae, which it might cause public health risk on pet owners.
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Affiliation(s)
| | | | - Gee-Wook Shin
- 2 Bio-Safety Research Institute, College of Veterinary Medicine, Chonbuk National University, Jeonju, Korea
| | | | - Sabrina Hossain
- 1 Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - Gang-Joon Heo
- 1 Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
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19
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Chantziaras I, Smet A, Filippitzi ME, Damiaans B, Haesebrouck F, Boyen F, Dewulf J. The effect of a commercial competitive exclusion product on the selection of enrofloxacin resistance in commensal E. coli in broilers. Avian Pathol 2018; 47:443-454. [PMID: 29874925 DOI: 10.1080/03079457.2018.1486027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
The effect of a competitive exclusion product (Aviguard®) on the selection of fluoroquinolone resistance in poultry was assessed in vivo in the absence or presence of fluoroquinolone treatment. Two experiments using a controlled seeder-sentinel animal model (2 seeders: 4 sentinels per group) with one-day-old chicks were used. For both experiments, as soon as the chicks were hatched, the birds of two groups were administered Aviguard® and two groups were left untreated. Three days later, all groups were inoculated with an enrofloxacin-susceptible commensal E. coli strain. Five days after hatching, two birds per group were inoculated with either a bacteriologically fit or a bacteriologically non-fit enrofloxacin-resistant commensal E. coli strain. In experiment 2, all groups were orally treated for three consecutive days (days 8-10) with enrofloxacin. Throughout the experiments, faecal excretion of all inoculated E. coli strains was determined on days 2, 5, 8, 11, 18 and 23 by selective plating (via spiral plater). Linear mixed models were used to assess the effect of Aviguard® on the selection of fluoroquinolone resistance. The use of Aviguard® (P < 0.01) reduced the excretion of enrofloxacin-resistant E. coli when no enrofloxacin treatment was administered. However, this beneficial effect disappeared (P = 0.37) when the birds were treated with enrofloxacin. Similarly, bacterial fitness of the enrofloxacin-resistant E. coli strain used for inoculation had an effect (P < 0.01) on the selection of enrofloxacin resistance when no treatment was administered, whereas this effect was no longer present when enrofloxacin was administered (P = 0.70). Thus, enrofloxacin treatment cancelled the beneficial effects from administrating Aviguard® in one-day-old broiler chicks and resulted in an enrofloxacin-resistant flora. RESEARCH HIGHLIGHTS The effect of Aviguard® on the selection of enrofloxacin resistance was assessed in vivo. Without enrofloxacin, Aviguard® reduced the selection of enrofloxacin resistance. When enrofloxacin was administered, it cancelled the beneficial effect of Aviguard®.
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Affiliation(s)
- Ilias Chantziaras
- a Veterinary Epidemiology Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine , Ghent University , Merelbeke , Belgium
| | - Annemieke Smet
- b Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences , University of Antwerp , Antwerp , Belgium
| | - Maria Eleni Filippitzi
- a Veterinary Epidemiology Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine , Ghent University , Merelbeke , Belgium
| | - Bert Damiaans
- a Veterinary Epidemiology Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine , Ghent University , Merelbeke , Belgium
| | - Freddy Haesebrouck
- c Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine , Ghent University , Merelbeke , Belgium
| | - Filip Boyen
- c Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine , Ghent University , Merelbeke , Belgium
| | - Jeroen Dewulf
- a Veterinary Epidemiology Unit, Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine , Ghent University , Merelbeke , Belgium
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20
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Ruiz J, Ramirez P, Company MJ, Gordon M, Villarreal E, Concha P, Aroca M, Frasquet J, Remedios-Marqués M, Castellanos-Ortega Á. Impact of amikacin pharmacokinetic/pharmacodynamic index on treatment response in critically ill patients. J Glob Antimicrob Resist 2018; 12:90-95. [DOI: 10.1016/j.jgar.2017.09.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 07/20/2017] [Accepted: 09/28/2017] [Indexed: 11/30/2022] Open
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22
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Hwang AY, Gums JG. The emergence and evolution of antimicrobial resistance: Impact on a global scale. Bioorg Med Chem 2016; 24:6440-6445. [PMID: 27117692 DOI: 10.1016/j.bmc.2016.04.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 04/06/2016] [Accepted: 04/12/2016] [Indexed: 10/21/2022]
Abstract
The evolution of antimicrobial resistance is a multifaceted issue that is influenced by numerous factors. This growing healthcare problem has significantly impacted the public welfare and has substantially burdened the economic system on a global scale. In an effort to combat this rising problem, several strategies have been implemented in the recent years to stall the progression and decrease the emergence of antimicrobial resistance. The aim of this review article is to describe the various factors that have contributed to the current state of antimicrobial resistance and to evaluate potential strategies developed to reduce the burden of antimicrobial resistance.
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Affiliation(s)
- Andrew Y Hwang
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, P.O. Box 100486, Gainesville, FL 32610, USA; Department of Community Health and Family Medicine, College of Medicine, University of Florida, 1707 North Main Street, Gainesville, FL 32609, USA.
| | - John G Gums
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, P.O. Box 100486, Gainesville, FL 32610, USA; Department of Community Health and Family Medicine, College of Medicine, University of Florida, 1707 North Main Street, Gainesville, FL 32609, USA
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23
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Buffet-Bataillon S, Tattevin P, Maillard JY, Bonnaure-Mallet M, Jolivet-Gougeon A. Efflux pump induction by quaternary ammonium compounds and fluoroquinolone resistance in bacteria. Future Microbiol 2016; 11:81-92. [DOI: 10.2217/fmb.15.131] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Biocides, primarily those containing quaternary ammonium compounds (QAC), are heavily used in hospital environments and various industries (e.g., food, water, cosmetic). To date, little attention has been paid to potential implications of QAC use in the emergence of antibiotic resistance, especially fluoroquinolone-resistant bacteria in patients and in the environment. QAC-induced overexpression of efflux pumps can lead to: cross resistance with fluoroquinolones mediated by multidrug efflux pumps; stress response facilitating mutation in the Quinolone Resistance Determining Region; and biofilm formation increasing the risk of transfer of mobile genetic elements carrying fluoroquinolone or QAC resistance determinants. By following the European Biocidal Product Regulation, manufacturers of QAC are required to ensure that their QAC-based biocidal products are safe and will not contribute to emerging bacterial resistance.
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Affiliation(s)
| | - Pierre Tattevin
- Service des Maladies Infectieuses, Pontchaillou, 35043 Rennes, France
- INSERM U835, Université de Rennes 1, 35000 Rennes, France
| | - Jean-Yves Maillard
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, UK
| | - Martine Bonnaure-Mallet
- EA 1254 Microbiologie, Université de Rennes 1, 35000 Rennes, France
- Pôle Odontologie, Teaching Hospital, 35043 Rennes, France
| | - Anne Jolivet-Gougeon
- Pôle Biologie, Teaching Hospital Pontchaillou, 35043 Rennes, France
- EA 1254 Microbiologie, Université de Rennes 1, 35000 Rennes, France
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24
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Classical and Targeted Anticancer Drugs: An Appraisal of Mechanisms of Multidrug Resistance. Methods Mol Biol 2016; 1395:19-37. [PMID: 26910066 DOI: 10.1007/978-1-4939-3347-1_2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The mechanisms by which tumor cells resist the action of multiple anticancer drugs, often with widely different chemical structures, have been pursued for more than 30 years. The identification of P-glycoprotein (P-gp), a drug efflux transporter protein with affinity for multiple therapeutic drugs, provided an important potential mechanism and further work, which identified other members of ATP-binding cassette (ABC) family that act as drug transporters. Several observations, including results of clinical trials with pharmacological inhibitors of P-gp, have suggested that mechanisms other than efflux transporters should be considered as contributors to resistance, and in this review mechanisms of anticancer drug resistance are considered more broadly. Cells in human tumors exist is a state of continuous turnover, allowing ongoing selection and "survival of the fittest." Tumor cells die not only as a consequence of drug therapy but also by apoptosis induced by their microenvironment. Cell death can be mediated by host immune mechanisms and by nonimmune cells acting on so-called death receptors. The tumor cell proliferation rate is also important because it controls tumor regeneration. Resistance to therapy might therefore be considered to arise from a reduction of several distinct cell death mechanisms, as well as from an increased ability to regenerate. This review provides a perspective on these mechanisms, together with brief descriptions of some of the methods that can be used to investigate them in a clinical situation.
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25
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Fecal microbiota transplantation and successful resolution of multidrug-resistant-organism colonization. J Clin Microbiol 2015; 53:1986-9. [PMID: 25878340 DOI: 10.1128/jcm.00820-15] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Accepted: 04/07/2015] [Indexed: 01/09/2023] Open
Abstract
We report a case in which fecal microbiota transplantation (FMT) utilized for relapsing Clostridium difficile colitis successfully eradicated colonization with several multidrug-resistant organisms (MDROs). FMT may have an additive benefit of reducing MDRO carriage and should be further investigated as a potential measure to eradicate additional potentially virulent organisms beyond C. difficile.
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26
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Dietert RR, Dietert JM. The Microbiome and Sustainable Healthcare. Healthcare (Basel) 2015; 3:100-29. [PMID: 27417751 PMCID: PMC4934527 DOI: 10.3390/healthcare3010100] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/09/2015] [Accepted: 02/16/2015] [Indexed: 12/19/2022] Open
Abstract
Increasing prevalences, morbidity, premature mortality and medical needs associated with non-communicable diseases and conditions (NCDs) have reached epidemic proportions and placed a major drain on healthcare systems and global economies. Added to this are the challenges presented by overuse of antibiotics and increased antibiotic resistance. Solutions are needed that can address the challenges of NCDs and increasing antibiotic resistance, maximize preventative measures, and balance healthcare needs with available services and economic realities. Microbiome management including microbiota seeding, feeding, and rebiosis appears likely to be a core component of a path toward sustainable healthcare. Recent findings indicate that: (1) humans are mostly microbial (in terms of numbers of cells and genes); (2) immune dysfunction and misregulated inflammation are pivotal in the majority of NCDs; (3) microbiome status affects early immune education and risk of NCDs, and (4) microbiome status affects the risk of certain infections. Management of the microbiome to reduce later-life health risk and/or to treat emerging NCDs, to spare antibiotic use and to reduce the risk of recurrent infections may provide a more effective healthcare strategy across the life course particularly when a personalized medicine approach is considered. This review will examine the potential for microbiome management to contribute to sustainable healthcare.
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Affiliation(s)
- Rodney R Dietert
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.
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