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Britton SJ, Neven H, Maskell DL. Microbial Small-Talk: Does Quorum Sensing Play a Role in Beer Fermentation? JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2020. [DOI: 10.1080/03610470.2020.1843928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Scott J. Britton
- Research & Development, Duvel Moortgat, Puurs-Sint-Amands, Belgium
- International Centre for Brewing and Distilling, Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, UK
| | - Hedwig Neven
- Research & Development, Duvel Moortgat, Puurs-Sint-Amands, Belgium
- Centre for Food and Microbial Technology (CLMT), Department M2S, KU Leuven, Leuven, Belgium
| | - Dawn L. Maskell
- International Centre for Brewing and Distilling, Institute of Biological Chemistry, Biophysics and Bioengineering, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, UK
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2
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Yan Q, Li X, Ma B, Zou Y, Wang Y, Liao X, Liang J, Mi J, Wu Y. Different Concentrations of Doxycycline in Swine Manure Affect the Microbiome and Degradation of Doxycycline Residue in Soil. Front Microbiol 2018; 9:3129. [PMID: 30619199 PMCID: PMC6306040 DOI: 10.3389/fmicb.2018.03129] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 12/04/2018] [Indexed: 11/24/2022] Open
Abstract
Antibiotic residues that enter the soil through swine manure could disturb the number, community structure and functions of microbiota which could also degrade antibiotics in soil. Five different concentrations of doxycycline (DOX) incorporated into swine manure were added to soil to explore the effects of DOX on microbiota in soil and degradation itself. The results showed that the soil microbiome evolved an adaptation to the soil containing DOX by generating resistance genes. Moreover, some of the organisms within the soil microbiome played crucial roles in the degradation of DOX. The average degradation half-life of DOX in non-sterile groups was 13.85 ± 0.45 days, which was significantly shorter than the 29.26 ± 0.98 days in the group with sterilized soil (P < 0.01), indicating that the soil microbiome promoted DOX degradation. DOX addition affected the number of tetracycline resistance genes, depending on the type of gene and the DOX concentration. Among these genes, tetA, tetM, tetW, and tetX had significantly higher copy numbers when the concentration of DOX was higher. In contrast, a lower concentration of DOX had an inhibitory effect on tetG. At the same time, the microbial compositions were affected by the initial concentration of DOX and the different experimental periods. The soil chemical indicators also affected the microbial diversity changes, mainly because some microorganisms could survive in adversity and become dominant bacterial groups, such as the genera Vagococcus and Enterococcus (which were associated with electrical conductivity) and Caldicoprobacter spp. (which were positively correlated with pH). Our study mainly revealed soil microbiota and DOX degradation answered differently under variable concentrations of DOX mixed with swine manure in soil.
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Affiliation(s)
- Qiufan Yan
- College of Animal Science, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
| | - Xiaoyang Li
- College of Animal Science, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China
| | - Baohua Ma
- Nanhai Entry-Exit Inspection and Quarantine Bureau, Foshan, China
| | - Yongde Zou
- Nanhai Entry-Exit Inspection and Quarantine Bureau, Foshan, China
| | - Yan Wang
- College of Animal Science, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China.,Guangdong Enterprise Lab of Healthy Animal Husbandry and Environment Control, Yunfu, China.,Ministry of Agriculture Key Laboratory of Tropical Agricultural Environment, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agriculture University, Guangzhou, China
| | - Xindi Liao
- College of Animal Science, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China.,Guangdong Enterprise Lab of Healthy Animal Husbandry and Environment Control, Yunfu, China.,Ministry of Agriculture Key Laboratory of Tropical Agricultural Environment, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agriculture University, Guangzhou, China
| | - Junboo Liang
- Laboratory of Animal Production, Institute of Tropical Agriculture, University Putra Malaysia, Serdang, Malaysia.,Laboratory of Molecular Biomedicine, Institute of Bioscience, University Putra Malaysia, Serdang, Malaysia
| | - Jiandui Mi
- College of Animal Science, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China.,Guangdong Enterprise Lab of Healthy Animal Husbandry and Environment Control, Yunfu, China.,Ministry of Agriculture Key Laboratory of Tropical Agricultural Environment, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agriculture University, Guangzhou, China
| | - Yinbao Wu
- College of Animal Science, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China.,Guangdong Enterprise Lab of Healthy Animal Husbandry and Environment Control, Yunfu, China.,Ministry of Agriculture Key Laboratory of Tropical Agricultural Environment, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agriculture University, Guangzhou, China
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3
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Wei TY, Cheng CM. Synthetic Biology-Based Point-of-Care Diagnostics for Infectious Disease. Cell Chem Biol 2017; 23:1056-1066. [PMID: 27662252 DOI: 10.1016/j.chembiol.2016.07.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 06/15/2016] [Accepted: 07/08/2016] [Indexed: 02/09/2023]
Abstract
Infectious diseases outpace all other causes of death in low-income countries, posing global health risks, laying stress on healthcare systems and societies, and taking an avoidable human toll. One solution to this crisis is early diagnosis of infectious disease, which represents a powerful way to optimize treatment, increase patient survival rate, and decrease healthcare costs. However, conventional early diagnosis methods take a long time to generate results, lack accuracy, and are known to seriously underperform with regard to fungal and viral infections. Synthetic biology offers a fast and highly accurate alternative to conventional infectious disease diagnosis. In this review, we outline obstacles to infectious disease diagnostics and discuss two emerging alternatives: synthetic viral diagnostic systems and biosensors. We argue that these synthetic biology-based approaches may overcome diagnostic obstacles in infectious disease and improve health outcomes.
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Affiliation(s)
- Ting-Yen Wei
- Interdisciplinary Program of Life Science, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Chao-Min Cheng
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan.
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Bouyahya A, Dakka N, Et-Touys A, Abrini J, Bakri Y. Medicinal plant products targeting quorum sensing for combating bacterial infections. ASIAN PAC J TROP MED 2017; 10:729-743. [DOI: 10.1016/j.apjtm.2017.07.021] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 06/25/2017] [Accepted: 06/30/2017] [Indexed: 01/18/2023] Open
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5
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Alternative strategies for the study and treatment of clinical bacterial biofilms. Emerg Top Life Sci 2017; 1:41-53. [PMID: 33525815 DOI: 10.1042/etls20160020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 02/24/2017] [Accepted: 02/28/2017] [Indexed: 11/17/2022]
Abstract
Biofilms represent an adaptive lifestyle where microbes grow as structured aggregates in many different environments, e.g. on body surfaces and medical devices. They are a profound threat in medical (and industrial) settings and cause two-thirds of all infections. Biofilm bacteria are especially recalcitrant to common antibiotic treatments, demonstrating adaptive multidrug resistance. For this reason, novel methods to eradicate or prevent biofilm infections are greatly needed. Recent advances have been made in exploring alternative strategies that affect biofilm lifestyle, inhibit biofilm formation, degrade biofilm components and/or cause dispersal. As such, naturally derived compounds, molecules that interfere with bacterial signaling systems, anti-biofilm peptides and phages show great promise. Their implementation as either stand-alone drugs or complementary therapies has the potential to eradicate resilient biofilm infections. Additionally, altering the surface properties of indwelling medical devices through bioengineering approaches has been examined as a method for preventing biofilm formation. There is also a need for improving current biofilm detection methods since in vitro methods often do not accurately measure live bacteria in biofilms or mimic in vivo conditions. We propose that the design and development of novel compounds will be enabled by the improvement and use of appropriate in vitro and in vivo models.
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Pienaar JA, Singh A, Barnard TG. The viable but non-culturable state in pathogenic Escherichia coli: A general review. Afr J Lab Med 2016; 5:368. [PMID: 28879110 PMCID: PMC5436400 DOI: 10.4102/ajlm.v5i1.368] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 01/14/2016] [Indexed: 12/12/2022] Open
Abstract
Background The persistence and pathogenicity of pathogenic bacteria are dependent on the ability of the species to survive in adverse conditions. During the infectious process, the organism may need to pass through certain hostile anatomical sites, such as the stomach. Under various environmental stresses, many bacteria enter into the viable but non-culturable (VBNC) state, where they are ‘alive’ or metabolically active, but will not grow on conventional media. Escherichia coli bacteria encounter several diverse stress factors during their growth, survival and infection and thus may enter into the VBNC state. Objectives This review discusses various general aspects of the VBNC state, the mechanisms and possible public health impact of indicator and pathogenic E. coli entering into the VBNC state. Method A literature review was conducted to ascertain the possible impact of E. coli entering into the VBNC state. Results Escherichia coli enter into the VBNC state by means of several induction mechanisms. Various authors have found that E. coli can be resuscitated post-VBNC. Certain strains of pathogenic E. coli are still able to produce toxins in the VBNC state, whilst others are avirulent during the VBNC state but are able to regain virulence after resuscitation. Conclusion Pathogenic and indicator E. coli entering into the VBNC state could have an adverse effect on public health if conventional detection methods are used, where the number of viable cells could be underestimated and the VBNC cells still produce toxins or could, at any time, be resuscitated and become virulent again.
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Affiliation(s)
- Jennifer A Pienaar
- Faculty of Health Sciences, Department of Biomedical Technology, University of Johannesburg, Johannesburg, South Africa.,Water and Health Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Atheesha Singh
- Water and Health Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Tobias G Barnard
- Water and Health Research Centre, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
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7
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Zhang W, Li C. Exploiting Quorum Sensing Interfering Strategies in Gram-Negative Bacteria for the Enhancement of Environmental Applications. Front Microbiol 2016; 6:1535. [PMID: 26779175 PMCID: PMC4705238 DOI: 10.3389/fmicb.2015.01535] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 12/21/2015] [Indexed: 12/12/2022] Open
Abstract
Quorum sensing (QS) is a widespread intercellular form of communication to coordinate physiological processes and cooperative activities of bacteria at the population level, and it depends on the production, secretion, and detection of small diffusible autoinducers, such as acyl-homoserine lactones (AHLs), auto-inducing oligo-peptides (AIPs) and autoinducer 2. In this review, the function of QS autoinducers of gram-negative bacteria in different aspects of wastewater treatment systems is examined. Based on research primarily performed over the past 10 years, QS involvement in the formation of biofilm and aerobic granules and changes of the microbial community and degradation/transformation pathways is discussed. In particular, the QS pathway in the role of bacterial infections and disease prevention in aquaculture is addressed. Interference of QS autoinducer-regulated pathways is considered potential treatment for a variety of environmentally related problems. This review is expected to serve as a stepping stone for further study and development strategies based on the mediation of QS-regulated pathways to enhance applications in both wastewater treatment systems and aquaculture.
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Affiliation(s)
- Weiwei Zhang
- Department of Aquaculture, School of Marine Sciences, Ningbo University Ningbo, China
| | - Chenghua Li
- Department of Aquaculture, School of Marine Sciences, Ningbo University Ningbo, China
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8
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O'Connor G, Knecht LD, Salgado N, Strobel S, Pasini P, Daunert S. Whole-Cell Biosensors as Tools for the Detection of Quorum-Sensing Molecules: Uses in Diagnostics and the Investigation of the Quorum-Sensing Mechanism. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2015:181-200. [PMID: 26475469 DOI: 10.1007/10_2015_337] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Genetically engineered bacterial whole-cell biosensors are powerful tools that take advantage of bacterial proteins and pathways to allow for detection of a specific analyte. These biosensors have been employed for a broad range of applications, including the detection of bacterial quorum-sensing molecules (QSMs). Bacterial QSMs are the small molecules bacteria use for population density-dependent communication, a process referred to as quorum sensing (QS). Various research groups have investigated the presence of QSMs, including N-acyl homoserine lactones (AHLs) and autoinducer-2 (AI-2), in physiological samples in attempts to enhance our knowledge of the role of bacteria and QS in disease states. Continued studies in these fields may allow for improved patient care and therapeutics based upon QSMs. Furthermore, bacterial whole-cell biosensors have elucidated the roles of some antibiotics as QS agonists and antagonists. Graphical Abstract.
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Affiliation(s)
- Gregory O'Connor
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Leslie D Knecht
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA.
- Department of Chemistry, University of Miami, Miami, FL, 33146, USA.
| | - Nelson Salgado
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Sebastian Strobel
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Patrizia Pasini
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Sylvia Daunert
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
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9
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Rangel-Vega A, Bernstein LR, Mandujano-Tinoco EA, García-Contreras SJ, García-Contreras R. Drug repurposing as an alternative for the treatment of recalcitrant bacterial infections. Front Microbiol 2015; 6:282. [PMID: 25914685 PMCID: PMC4391038 DOI: 10.3389/fmicb.2015.00282] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 03/21/2015] [Indexed: 01/17/2023] Open
Abstract
Bacterial infection remains one of the leading causes of death worldwide, and the options for treating such infections are decreasing, due the rise of antibiotic-resistant bacteria. The pharmaceutical industry has produced few new types of antibiotics in more than a decade. Researchers are taking several approaches toward developing new classes of antibiotics, including (1) focusing on new targets and processes, such as bacterial cell–cell communication that upregulates virulence; (2) designing inhibitors of bacterial resistance, such as blockers of multidrug efflux pumps; and (3) using alternative antimicrobials such as bacteriophages. In addition, the strategy of finding new uses for existing drugs is beginning to produce results: antibacterial properties have been discovered for existing anticancer, antifungal, anthelmintic, and anti-inflammatory drugs. In this review, we discuss the antimicrobial properties of gallium compounds, 5-fluorouracil, ciclopirox, diflunisal, and some other FDA-approved drugs and argue that their repurposing for the treatment of bacterial infections, including those that are multidrug resistant, is a feasible strategy.
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Affiliation(s)
- Adrián Rangel-Vega
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México Mexico City, Mexico
| | | | - Edna Ayerim Mandujano-Tinoco
- Epigenetics of Cancer Laboratory, Division of Basic Research, National Institute of Genomic Medicine Mexico City, Mexico
| | | | - Rodolfo García-Contreras
- Department of Microbiology and Parasitology, Faculty of Medicine, Universidad Nacional Autónoma de México Mexico City, Mexico
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Simultaneous Quantification of Linezolid, Tinidazole, Norfloxacin, Moxifloxacin, Levofloxacin, and Gatifloxacin in Human Plasma for Therapeutic Drug Monitoring and Pharmacokinetic Studies in Human Volunteers. Ther Drug Monit 2013; 35:770-7. [DOI: 10.1097/ftd.0b013e318297b6b0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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