1
|
Khatoon H, Mohd Faudzi SM. Exploring quinoxaline derivatives: An overview of a new approach to combat antimicrobial resistance. Eur J Med Chem 2024; 276:116675. [PMID: 39004020 DOI: 10.1016/j.ejmech.2024.116675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Revised: 07/07/2024] [Accepted: 07/10/2024] [Indexed: 07/16/2024]
Abstract
Antimicrobial resistance (AMR) has emerged as a long-standing global issue ever since the introduction of penicillin, the first antibiotic. Scientists are constantly working to develop innovative antibiotics that are more effective and superior. Unfortunately, the misuse of antibiotics has resulted in their declining effectiveness over the years. By 2050, it is projected that approximately 10 million lives could be lost annually due to antibiotic resistance. Gaining insight into the mechanisms behind the development and transmission of AMR in well-known bacteria including Escherichia coli, Bacillus pumilus, Enterobacter aerogenes, Salmonella typhimurium, and the gut microbiota is crucial for researchers. Environmental contamination in third world and developing countries also plays a significant role in the increase of AMR. Despite the availability of numerous recognized antibiotics to combat bacterial infections, their effectiveness is diminishing due to the growing problem of AMR. The overuse of antibiotics has led to an increase in resistance rates and negative impacts on global health. This highlights the importance of implementing strong antimicrobial stewardship and improving global monitoring, as emphasized by the World Health Organization (WHO) and other organizations. In the face of these obstacles, quinoxaline derivatives have emerged as promising candidates. They are characterized by their remarkable efficacy against a broad spectrum of harmful bacteria, including strains that are resistant to multiple drugs. These compounds are known for their strong structural stability and adaptability, making them a promising and creative solution to the AMR crisis. This review aims to assess the effectiveness of quinoxaline derivatives in treating drug-resistant infections, with the goal of making a meaningful contribution to the global fight against AMR.
Collapse
Affiliation(s)
- Hena Khatoon
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia.
| | - Siti Munirah Mohd Faudzi
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, 43400, Selangor, Malaysia; Natural Medicines and Products Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
| |
Collapse
|
2
|
Basiry D, Kommedal R, Kaster KM. Effect of subinhibitory concentrations on the spreading of the ampicillin resistance gene blaCMY-2 in an activated sludge microcosm. ENVIRONMENTAL TECHNOLOGY 2024:1-13. [PMID: 39215485 DOI: 10.1080/09593330.2024.2394719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 07/16/2024] [Indexed: 09/04/2024]
Abstract
As the problem of multi-resistant bacteria grows a better understanding of the spread of antibiotic resistance genes is of utmost importance for society. Wastewater treatment plants contain subinhibitory concentrations of antibiotics and are thought to be hotspots for antibiotic resistance gene propagation. Here we evaluate the influence of sub-minimum inhibitory concentrations of antibiotics on the spread of resistance genes within the bacterial community in activated sludge laboratory-scale sequencing batch reactors. The mixed communities were fed two different ampicillin concentrations (500 and 5000 µg/L) and the reactors were run and monitored for 30 days. During the experiment the β-lactamase resistance gene blaCMY-2 was monitored via qPCR and DNA samples were taken to monitor the effect of ampicillin on the microbial community. The relative copy number of blaCMY-2 in the reactor fed with the sub-minimum inhibitory concentration of 500 µg/L ampicillin was spread out over a wider range of values than the control and 5000 µg/L ampicillin reactors indicating more variability of gene number in the 500 µg/L reactor. This result emphasises the problem of sub-minimum inhibitory concentrations of antibiotics in wastewater. High-throughput sequencing showed that continuous exposure to ampicillin caused a shift from a Bacteroidetes to Proteobacteria in the bacterial community. The combined use of qPCR and high-throughput sequencing showed that ampicillin stimulates the spread of resistance genes and leads to the propagation of microbial populations which are resistant to it.
Collapse
Affiliation(s)
- Daniel Basiry
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
| | - Roald Kommedal
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
| | - Krista Michelle Kaster
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
| |
Collapse
|
3
|
Haque F, Diba F, Istiaq A, Siddique MA, Mou TJ, Hossain MA, Sultana M. Novel insights into the co-selection of metal-driven antibiotic resistance in bacteria: a study of arsenic and antibiotic co-exposure. Arch Microbiol 2024; 206:194. [PMID: 38538852 DOI: 10.1007/s00203-024-03873-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/21/2024] [Accepted: 01/26/2024] [Indexed: 04/16/2024]
Abstract
The simultaneous development of antibiotic resistance in bacteria due to metal exposure poses a significant threat to the environment and human health. This study explored how exposure to both arsenic and antibiotics affects the ability of an arsenite oxidizer, Achromobacter xylosoxidans CAW4, to transform arsenite and its antibiotic resistance patterns. The bacterium was isolated from arsenic-contaminated groundwater in the Chandpur district of Bangladesh. We determined the minimum inhibitory concentration (MIC) of arsenite, cefotaxime, and tetracycline for A. xylosoxidans CAW4, demonstrating a multidrug resistance (MDR) trait. Following this determination, we aimed to mimic an environment where A. xylosoxidans CAW4 was exposed to both arsenite and antibiotics. We enabled the strain to grow in sub-MIC concentrations of 1 mM arsenite, 40 µg/mL cefotaxime, and 20 µg/mL tetracycline. The expression dynamics of the arsenite oxidase (aioA) gene in the presence or absence of antibiotics were analyzed. The findings indicated that simultaneous exposure to arsenite and antibiotics adversely affected the bacteria's capacity to metabolize arsenic. However, when arsenite was present in antibiotics-containing media, it promoted bacterial growth. The study observed a global downregulation of the aioA gene in arsenic-antibiotic conditions, indicating the possibility of increased susceptibility through co-resistance across the entire bacterial population of the environment. This study interprets that bacterial arsenic-metabolizing ability can rescue the bacteria from antibiotic stress, further disseminating environmental cross-resistance. Therefore, the co-selection of metal-driven antibiotic resistance in bacteria highlights the need for effective measures to address this emerging threat to human health and the environment.
Collapse
Affiliation(s)
- Farhana Haque
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - Farzana Diba
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
- Institute of Tissue Banking and Biomaterial Research, Atomic Energy Research Establishment, Savar, Dhaka, 1349, Bangladesh
| | - Arif Istiaq
- Department of Stem Cell Biology, Faculty of Arts and Sciences, Kyushu University, Fukuoka, Japan
| | - Mohammad Anwar Siddique
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
- Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Taslin Jahan Mou
- Department of Microbiology, Jahangirnagar University, Savar, Dhaka, 1342, Bangladesh
| | - M Anwar Hossain
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh
- Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Munawar Sultana
- Department of Microbiology, University of Dhaka, Dhaka, 1000, Bangladesh.
| |
Collapse
|
4
|
Nafaee ZH, Egyed V, Jancsó A, Tóth A, Gerami AM, Dang TT, Heiniger‐Schell J, Hemmingsen L, Hunyadi‐Gulyás É, Peintler G, Gyurcsik B. Revisiting the hydrolysis of ampicillin catalyzed by Temoneira-1 β-lactamase, and the effect of Ni(II), Cd(II) and Hg(II). Protein Sci 2023; 32:e4809. [PMID: 37853808 PMCID: PMC10661098 DOI: 10.1002/pro.4809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 09/18/2023] [Accepted: 10/15/2023] [Indexed: 10/20/2023]
Abstract
β-Lactamases grant resistance to bacteria against β-lactam antibiotics. The active center of TEM-1 β-lactamase accommodates a Ser-Xaa-Xaa-Lys motif. TEM-1 β-lactamase is not a metalloenzyme but it possesses several putative metal ion binding sites. The sites composed of His residue pairs chelate borderline transition metal ions such as Ni(II). In addition, there are many sulfur-containing donor groups that can coordinate soft metal ions such as Hg(II). Cd(II) may bind to both types of the above listed donor groups. No significant change was observed in the circular dichroism spectra of TEM-1 β-lactamase on increasing the metal ion content of the samples, with the exception of Hg(II) inducing a small change in the secondary structure of the protein. A weak nonspecific binding of Hg(II) was proven by mass spectrometry and 119m Hg perturbed angular correlation spectroscopy. The hydrolytic process of ampicillin catalyzed by TEM-1 β-lactamase was described by the kinetic analysis of the set of full catalytic progress curves, where the slow, yet observable conversion of the primary reaction product into a second one, identified as ampilloic acid by mass spectrometry, needed also to be considered in the applied model. Ni(II) and Cd(II) slightly promoted the catalytic activity of the enzyme while Hg(II) exerted a noticeable inhibitory effect. Hg(II) and Ni(II), applied at 10 μM concentration, inhibited the growth of E. coli BL21(DE3) in M9 minimal medium in the absence of ampicillin, but addition of the antibiotic could neutralize this toxic effect by complexing the metal ions.
Collapse
Affiliation(s)
- Zeyad H. Nafaee
- Department of Molecular and Analytical ChemistryUniversity of SzegedSzegedHungary
- College of PharmacyUniversity of BabylonBabelIraq
| | - Viktória Egyed
- Department of Molecular and Analytical ChemistryUniversity of SzegedSzegedHungary
| | - Attila Jancsó
- Department of Molecular and Analytical ChemistryUniversity of SzegedSzegedHungary
| | - Annamária Tóth
- Department of Molecular and Analytical ChemistryUniversity of SzegedSzegedHungary
| | - Adeleh Mokhles Gerami
- School of Particles and AcceleratorsInstitute for Research in Fundamental Sciences (IPM)TehranIran
- European Organization for Nuclear Research (CERN)GenevaSwitzerland
| | - Thanh Thien Dang
- Institute for Materials Science and Center for Nanointegration Duisburg‐Essen (CENIDE)University of Duisburg‐EssenEssenGermany
| | - Juliana Heiniger‐Schell
- European Organization for Nuclear Research (CERN)GenevaSwitzerland
- Institute for Materials Science and Center for Nanointegration Duisburg‐Essen (CENIDE)University of Duisburg‐EssenEssenGermany
| | - Lars Hemmingsen
- Department of ChemistryUniversity of CopenhagenCopenhagenDenmark
| | - Éva Hunyadi‐Gulyás
- Laboratory of Proteomics Research, Biological Research CentreHungarian Research Network (HUN‐REN)SzegedHungary
| | - Gábor Peintler
- Department of Physical Chemistry and Material SciencesUniversity of SzegedSzegedHungary
| | - Béla Gyurcsik
- Department of Molecular and Analytical ChemistryUniversity of SzegedSzegedHungary
| |
Collapse
|
5
|
Quadir S, Khan NA, Singh DK, Faraz A, Jhingan GD, Joshi MC. Exposure to High Dosage of Gold Nanoparticles Accelerates Growth Rate by Modulating Ribosomal Protein Expression. ACS NANO 2023; 17:15529-15541. [PMID: 37548618 DOI: 10.1021/acsnano.3c01973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Gold nanoparticles (AuNPs) have been utilized in various biomedical applications including diagnostics and drug delivery. However, the cellular and metabolic responses of cells to these particles remain poorly characterized. In this study, we used bacteria (Escherichia coli and Bacillus subtilis) and a fungus (Saccharomyces cerevisiae) as model organisms to investigate the cellular and metabolic effects of exposure to different concentrations of citrate-capped spherical AuNPs with diameters of 5 and 10 nm. In different growth media, the synthesized AuNPs displayed stability and microorganisms exhibited uniform levels of uptake. Exposure to a high concentration of AuNPs (1012 particles) resulted in a reduced cell division time and a 2-fold increase in cell density in both bacteria and fungus. The exposed cells exhibited a decrease in average cell size and an increase in the expression of FtsZ protein (cell division marker), further supporting an accelerated growth rate. Notably, exposure to such a high concentration of AuNPs did not induce DNA damage, envelope stress, or a general stress response in bacteria. Differential whole proteome analysis revealed modulation of ribosomal protein expression upon exposure to AuNPs in both E. coli and S. cerevisiae. Interestingly, the accelerated growth observed upon exposure to AuNPs was sensitive to sub-minimum inhibitory concentration (sub-MIC) concentration of drugs that specifically target ribosome assembly and recycling. Based upon these findings, we hypothesize that exposure to high concentrations of AuNPs induces stress on the translation machinery. This leads to an increase in the protein synthesis rate by modulating ribosome assembly, which results in the rapid proliferation of cells.
Collapse
Affiliation(s)
- Shabina Quadir
- Multidisciplinary Centre for Advance Research & Studies, Jamia Millia Islamia, New Delhi 110025, India
| | - Nuha Abeer Khan
- Multidisciplinary Centre for Advance Research & Studies, Jamia Millia Islamia, New Delhi 110025, India
| | - Deepak Kumar Singh
- Multidisciplinary Centre for Advance Research & Studies, Jamia Millia Islamia, New Delhi 110025, India
| | - Amir Faraz
- Multidisciplinary Centre for Advance Research & Studies, Jamia Millia Islamia, New Delhi 110025, India
| | | | - Mohan Chandra Joshi
- Multidisciplinary Centre for Advance Research & Studies, Jamia Millia Islamia, New Delhi 110025, India
| |
Collapse
|
6
|
Bosch J, Bezuidenhout C, Coertze R, Molale-Tom L. Metal- and antibiotic-resistant heterotrophic plate count bacteria from a gold mine impacted river: the Mooi River system, South Africa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:31605-31619. [PMID: 36449242 PMCID: PMC9995416 DOI: 10.1007/s11356-022-24015-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 11/01/2022] [Indexed: 04/16/2023]
Abstract
The Wonderfonteinspruit, South Africa, is highly impacted by a century of gold mining activities. The aim of this study was to investigate the physico-chemical properties of the Wonderfonteinspruit and the receiving Mooi River system, the levels of antimicrobial (metals and antibiotics) resistance characteristics and heterotrophic bacteria levels in these water systems. Various physico-chemical parameters were determined. R2A agar and R2A agar supplemented with antimicrobials were used to enumerate heterotrophic bacteria. Morphologically distinct antimicrobial-resistant isolates were purified and screened for antibiotic susceptibility by a disc diffusion method. Selected isolates were identified, and minimum inhibitory concentration ranges determined. Among the antimicrobial resistant isolates, 87% were resistant to at least one antibiotic. Of these, almost 50% were resistant to more than 3 antibiotic classes. A large proportion was resistant to all 7 antibiotics tested. Phyla detected were Proteobacteria, Firmicutes and Bacteriodetes. High MIC levels for metals and antibiotics were detected among all the genera. Results demonstrate potential impacts of physico-chemical properties on levels of antimicrobial-resistant bacteria. Metal-resistant bacteria were also resistant to multiple antibiotics, suggesting that metal pollution from mining may be responsible for co-selection and maintenance of antibiotic-resistant bacteria in this aquatic system.
Collapse
Affiliation(s)
- Janita Bosch
- Unit for Environmental Sciences and Management, Microbiology, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Carlos Bezuidenhout
- Unit for Environmental Sciences and Management, Microbiology, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Roelof Coertze
- Unit for Environmental Sciences and Management, Microbiology, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom, 2520, South Africa
| | - Lesego Molale-Tom
- Unit for Environmental Sciences and Management, Microbiology, North-West University, Potchefstroom Campus, Private Bag X6001, Potchefstroom, 2520, South Africa.
| |
Collapse
|
7
|
Crintea A, Carpa R, Mitre AO, Petho RI, Chelaru VF, Nădășan SM, Neamti L, Dutu AG. Nanotechnology Involved in Treating Urinary Tract Infections: An Overview. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:555. [PMID: 36770516 PMCID: PMC9919202 DOI: 10.3390/nano13030555] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/22/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
Considered as the most frequent contaminations that do not require hospitalization, urinary tract infections (UTIs) are largely known to cause significant personal burdens on patients. Although UTIs overall are highly preventable health issues, the recourse to antibiotics as drug treatments for these infections is a worryingly spread approach that should be addressed and gradually overcome in a contemporary, modernized healthcare system. With a virtually alarming global rise of antibiotic resistance overall, nanotechnologies may prove to be the much-needed 'lifebuoy' that will eventually suppress this prejudicial phenomenon. This review aims to present the most promising, currently known nano-solutions, with glimpses on clinical and epidemiological aspects of the UTIs, prospective diagnostic instruments, and non-antibiotic treatments, all of these engulfed in a comprehensive overview.
Collapse
Affiliation(s)
- Andreea Crintea
- Department of Medical Biochemistry, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Rahela Carpa
- Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babes-Bolyai University, 400084 Cluj-Napoca, Romania
| | - Andrei-Otto Mitre
- Department of Pathophysiology, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Robert Istvan Petho
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Vlad-Florin Chelaru
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Sebastian-Mihail Nădășan
- Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Lidia Neamti
- Department of Medical Biochemistry, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| | - Alina Gabriela Dutu
- Department of Medical Biochemistry, Faculty of Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania
| |
Collapse
|
8
|
Shekhar S, Shrivastava S, Kabeer Kurukkan A, Sagarika P, Pramanik S, Sahi C, Mukherjee S. Cysteamine Capped Silver Nanoclusters: A Potential Antimicrobial Agent for Antibiotic-Resistant Bacteria. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
9
|
Li T, He B, Zhang X, Fan J, Gao L, Sun Z, Zhang J, Guo A, Pan D, Yin X, Tong Y, Song C, Kohmura Y, Yabashi M, Ishikawa T, Gao X, Jiang H. Three-Dimensional Quantitative Coherent Diffraction Imaging of Staphylococcus aureus Treated with Peptide-Mineralized Au-Cluster Probes. Anal Chem 2022; 94:13136-13144. [DOI: 10.1021/acs.analchem.2c02638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tangmeng Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai201210, China
| | - Bo He
- School of Physical Science and Technology, ShanghaiTech University, Shanghai201210, China
| | - Xiangchun Zhang
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou310008, China
| | - Jiadong Fan
- Center for Transformative Science, ShanghaiTech University, Shanghai201210, China
| | - Liang Gao
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing100124, China
| | - Zhibin Sun
- Photon Science Division, Paul Scherrer Institute, VilligenCH-5303, Switzerland
| | - Jianhua Zhang
- Center for Transformative Science, ShanghaiTech University, Shanghai201210, China
| | - Amin Guo
- School of Physical Science and Technology, ShanghaiTech University, Shanghai201210, China
| | - Dan Pan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai201210, China
| | - Xianzhen Yin
- Center for MOST and Image Fusion Analysis, Shanghai Institute of Materia Medica, Chinese Academy of Science, Shanghai201203, China
| | - Yajun Tong
- Center for Transformative Science, ShanghaiTech University, Shanghai201210, China
| | - Changyong Song
- Department of Physics, Pohang University of Science and Technology, Pohang37673, South Korea
| | - Yoshiki Kohmura
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo679-5148, Japan
| | - Makina Yabashi
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo679-5148, Japan
| | - Tetsuya Ishikawa
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo679-5148, Japan
| | - Xueyun Gao
- Department of Chemistry and Biology, Faculty of Environment and Life Science, Beijing University of Technology, Beijing100124, China
| | - Huaidong Jiang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai201210, China
- Center for Transformative Science, ShanghaiTech University, Shanghai201210, China
| |
Collapse
|
10
|
Shafodino FS, Lusilao JM, Mwapagha LM. Phytochemical characterization and antimicrobial activity of Nigella sativa seeds. PLoS One 2022; 17:e0272457. [PMID: 35926002 PMCID: PMC9352024 DOI: 10.1371/journal.pone.0272457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 07/19/2022] [Indexed: 01/12/2023] Open
Abstract
Nigella sativa is one of the medicinal plant species that gained popularity for a wide range of medicinal applications due to its seeds which are rich in phytoconstituents. Continuous scientific investigations on N. sativa seeds are needed to better understand its many medicinal potentials. This will also form a composition-based foundation that support several old and/or new case beneficial histories of its seeds. In this study, the antimicrobial activity of N. sativa seeds was phytochemically characterized and evaluated. Different extracts of N. sativa seeds were obtained by maceration and soxhlet extraction methods using different extraction solvents. The obtained extracts were tested using UV-Vis, FTIR, TLC, and GC-MS techniques. Antimicrobial analysis against pathogenic bacterial strains (E. coli, P. aeruginosa, S. aureus and B. subtilis) was carried out by disc diffusion method using different preparations of N. sativa seeds. The screening analysis revealed the presence of all the tested phytochemicals. FT-IR analysis of N. sativa seeds oil extracted with absolute ethanol revealed functional groups that are associated with active ingredients of medicinal value. The GC-MS chromatograms revealed different chemical constituents whose known bioactivities and/or applications are essential in the management of life-threatening infections. Different extracts of N. sativa seeds showed antimicrobial activity with different efficacy against the tested pathogenic bacterial strains. Therefore, this study shows that extracts of N. sativa seeds contain a variety of chemical components and functional groups linked to their antimicrobial properties, and they might be natural precursors of nutraceuticals.
Collapse
Affiliation(s)
- Festus S. Shafodino
- Department of Natural and Applied Sciences, Faculty of Health and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia
| | - Julien M. Lusilao
- Department of Natural and Applied Sciences, Faculty of Health and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia
| | - Lamech M. Mwapagha
- Department of Natural and Applied Sciences, Faculty of Health and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia
| |
Collapse
|
11
|
New N-Alkylated Heterocyclic Compounds as Prospective NDM1 Inhibitors: Investigation of In Vitro and In Silico Properties. Pharmaceuticals (Basel) 2022; 15:ph15070803. [PMID: 35890102 PMCID: PMC9322059 DOI: 10.3390/ph15070803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/21/2022] [Accepted: 06/21/2022] [Indexed: 02/06/2023] Open
Abstract
A new family of pyrazole-based compounds (1–15) was synthesized and characterized using different physicochemical analyses, such as FTIR, UV-Visible, 1H, 13C NMR, and ESI/LC-MS. The compounds were evaluated for their in vitro antifungal and antibacterial activities against several fungal and bacterial strains. The results indicate that some compounds showed excellent antibacterial activity against E. coli, S. aureus, C. freundii, and L. monocytogenes strains. In contrast, none of the compounds had antifungal activity. Molecular electrostatic potential (MEP) map analyses and inductive and mesomeric effect studies were performed to study the relationship between the chemical structure of our compounds and the biological activity. In addition, molecular docking and virtual screening studies were carried out to rationalize the antibacterial findings to characterize the modes of binding of the most active compounds to the active pockets of NDM1 proteins.
Collapse
|
12
|
Díez-Pascual AM. State of the Art in the Antibacterial and Antiviral Applications of Carbon-Based Polymeric Nanocomposites. Int J Mol Sci 2021; 22:10511. [PMID: 34638851 PMCID: PMC8509077 DOI: 10.3390/ijms221910511] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 09/25/2021] [Accepted: 09/26/2021] [Indexed: 12/15/2022] Open
Abstract
The development of novel approaches to prevent bacterial infection is essential for enhancing everyday life. Carbon nanomaterials display exceptional optical, thermal, and mechanical properties combined with antibacterial ones, which make them suitable for diverse fields, including biomedical and food applications. Nonetheless, their practical applications as antimicrobial agents have not been fully explored yet, owing to their relatively poor dispersibility, expensiveness, and scalability changes. To solve these issues, they can be integrated within polymeric matrices, which also exhibit antimicrobial activity in some cases. This review describes the state of the art in the antibacterial applications of polymeric nanocomposites reinforced with 0D fullerenes, 1D carbon nanotubes (CNTs), and 2D graphene (G) and its derivatives such as graphene oxide (GO) and reduced graphene oxide (rGO). Given that a large number of such nanocomposites are available, only the most illustrative examples are described, and their mechanisms of antimicrobial activity are discussed. Finally, some applications of these antimicrobial polymeric nanocomposites are reviewed.
Collapse
Affiliation(s)
- Ana M Díez-Pascual
- Universidad de Alcalá, Facultad de Ciencias, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona, Km. 33.6, 28805 Alcalá de Henares, Madrid, Spain
| |
Collapse
|
13
|
Non-steroidal anti-inflammatory drugs, plant extracts, and characterized microparticles to modulate antimicrobial resistance of epidemic mecA positive S. aureus of dairy origin. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-020-01628-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
14
|
Rahayu A, Rini CS, Prakoso YA, Palgunadi BU, Munandar MA. Effects of Sauropus androgynus extract and its combination with ampicillin against Methicillin-resistant Staphylococcus aureus: An in vitro study. INTERNATIONAL JOURNAL OF ONE HEALTH 2020. [DOI: 10.14202/ijoh.2020.128-133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background and Aim: The massive utilization of antibiotics has increased resistant genes produced by bacteria. Many bacteria, including Methicillin-resistant Staphylococcus aureus (MRSA), have become resistant against ampicillin (AMP). The combination of an herbal extract with AMP is expected to generate synergistic effects and may restore the susceptibility of MRSA against AMP. This study aimed to analyze the potency of Sauropus androgynous extract (SAE) as a single extract and combination with AMP against MRSA.
Materials and Methods: Sauropus androgynous was extracted using 60% ethanol. SAE biochemical compounds were analyzed qualitatively and quantitatively. SAE, AMP, and SAE+AMP were tested against MRSA isolates to determine the minimum inhibitory concentration and fractional inhibitory concentration. The inhibition of penicillin-binding proteins 2a (PBP2a) was analyzed using a latex agglutination test. Further, the disruptive membrane effects of SAE, AMP, and SAE+AMP were analyzed using a scanning electron microscope. The analysis of data was conducted using SPSS version 16 with p=0.01.
Results: SAE contained bioactive compounds such as phenolics and flavonoids. Further, 2 mg/mL of SAE could be used as the potential concentration against MRSA isolates in vitro. In addition, the utilization of SAE+AMP generated synergistic effects, restored the susceptibility of isolates against AMP, decreased the synthesis of PBP2a by the MRSA, and induced ultrastructural changes in the bacterial membrane.
Conclusion: This study indicated that the utilization of SAE potentially inhibits the growth of MRSA through decreasing of PBP2a expression, disruption of the MRSA membrane, while the combination of SAE+AMP showed synergistic effects against MRSA.
Collapse
Affiliation(s)
- Asih Rahayu
- Faculty of Veterinary Medicine, University of Wijaya Kusuma Surabaya, East Java, Indonesia
| | - Chylen Setiyo Rini
- Integrated Laboratory, Faculty of Health, University of Muhammadiyah Sidoarjo, East Java, Indonesia
| | - Yos Adi Prakoso
- Faculty of Veterinary Medicine, University of Wijaya Kusuma Surabaya, East Java, Indonesia
| | - Bagus Uda Palgunadi
- Faculty of Veterinary Medicine, University of Wijaya Kusuma Surabaya, East Java, Indonesia
| | - Muhammad Aris Munandar
- Integrated Laboratory, Faculty of Health, University of Muhammadiyah Sidoarjo, East Java, Indonesia
| |
Collapse
|
15
|
Mendez ME, Murugesh DK, Sebastian A, Hum NR, McCloy SA, Kuhn EA, Christiansen BA, Loots GG. Antibiotic Treatment Prior to Injury Improves Post-Traumatic Osteoarthritis Outcomes in Mice. Int J Mol Sci 2020; 21:E6424. [PMID: 32899361 PMCID: PMC7503363 DOI: 10.3390/ijms21176424] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 12/21/2022] Open
Abstract
Osteoarthritis (OA) is a painful and debilitating disease characterized by the chronic and progressive degradation of articular cartilage. Post-traumatic OA (PTOA) is a secondary form of OA that develops in ~50% of cases of severe articular injury. Inflammation and re-occurring injury have been implicated as contributing to the progression of PTOA after the initial injury. However, there is very little known about external factors prior to injury that could affect the risk of PTOA development. To examine how the gut microbiome affects PTOA development we used a chronic antibiotic treatment regimen starting at weaning for six weeks prior to ACL rupture, in mice. A six-weeks post-injury histological examination showed more robust cartilage staining on the antibiotic (AB)-treated mice than the untreated controls (VEH), suggesting slower disease progression in AB cohorts. Injured joints also showed an increase in the presence of anti-inflammatory M2 macrophages in the AB group. Molecularly, the phenotype correlated with a significantly lower expression of inflammatory genes Tlr5, Ccl8, Cxcl13, and Foxo6 in the injured joints of AB-treated animals. Our results indicate that a reduced state of inflammation at the time of injury and a lower expression of Wnt signaling modulatory protein, Rspo1, caused by AB treatment can slow down or improve PTOA outcomes.
Collapse
Affiliation(s)
- Melanie E. Mendez
- Lawrence Livermore National Laboratories, Physical and Life Sciences Directorate, Livermore, CA 94550, USA; (M.E.M.); (D.K.M.); (A.S.); (N.R.H.); (S.A.M.); (E.A.K.)
| | - Deepa K. Murugesh
- Lawrence Livermore National Laboratories, Physical and Life Sciences Directorate, Livermore, CA 94550, USA; (M.E.M.); (D.K.M.); (A.S.); (N.R.H.); (S.A.M.); (E.A.K.)
| | - Aimy Sebastian
- Lawrence Livermore National Laboratories, Physical and Life Sciences Directorate, Livermore, CA 94550, USA; (M.E.M.); (D.K.M.); (A.S.); (N.R.H.); (S.A.M.); (E.A.K.)
| | - Nicholas R. Hum
- Lawrence Livermore National Laboratories, Physical and Life Sciences Directorate, Livermore, CA 94550, USA; (M.E.M.); (D.K.M.); (A.S.); (N.R.H.); (S.A.M.); (E.A.K.)
- UC Merced, School of Natural Sciences, Merced, CA 95343, USA
| | - Summer A. McCloy
- Lawrence Livermore National Laboratories, Physical and Life Sciences Directorate, Livermore, CA 94550, USA; (M.E.M.); (D.K.M.); (A.S.); (N.R.H.); (S.A.M.); (E.A.K.)
| | - Edward A. Kuhn
- Lawrence Livermore National Laboratories, Physical and Life Sciences Directorate, Livermore, CA 94550, USA; (M.E.M.); (D.K.M.); (A.S.); (N.R.H.); (S.A.M.); (E.A.K.)
| | | | - Gabriela G. Loots
- Lawrence Livermore National Laboratories, Physical and Life Sciences Directorate, Livermore, CA 94550, USA; (M.E.M.); (D.K.M.); (A.S.); (N.R.H.); (S.A.M.); (E.A.K.)
- UC Merced, School of Natural Sciences, Merced, CA 95343, USA
| |
Collapse
|
16
|
Optimization of microbiological plastic film test plate conditions for rapid detection of antibiotics in milk. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2020. [DOI: 10.1007/s11694-020-00576-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
17
|
Label-Free Electrochemical Microfluidic Chip for the Antimicrobial Susceptibility Testing. Antibiotics (Basel) 2020; 9:antibiotics9060348. [PMID: 32575678 PMCID: PMC7344617 DOI: 10.3390/antibiotics9060348] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/17/2020] [Accepted: 06/17/2020] [Indexed: 01/15/2023] Open
Abstract
The emergence and spread of antibiotic-resistant bacteria is a global threat to human health. An accurate antibiotic susceptibility test (AST) before initiating the treatment is paramount in the treatment and bacterial resistance control. However, the current AST methods either are complex, use chemical and biological labels, lack multiplexing, are expensive, or are too slow to be used for routine screening. The primary objective of the current study is to develop an automated electrochemical microfluidic chip (EMC) for simple and rapid AST. The microfluidic channels and gold microelectrodes were designed for the automation of antibiotic mixing and distribution in multiple test chambers and for electrical signal measurements. The designed chip was tested for AST with E. coli samples, and the results were compared with conventional broth microdilution. The presented EMC provided rapid bacterial count and AST in 170 and 150 min, respectively, while the conventional broth microdilution evaluates in 450 and 240 min, respectively. The rapid AST capability of the EMC was further demonstrated with the artificial urine samples, and the results were obtained in 270 min, which was 90 min faster than the broth microdilution method. Additionally, the minimum inhibitory concentration (MIC) was evaluated on the EMC and compared with the results from an AlamarBlue assay. The experimental results indicate the sensitivity of the chip, minimum loss of antibiotics, and eventually, reduction in the evolution of antibiotic resistance. Cumulatively, we have developed an automated, label-free, economical, rapid, robust, and user-friendly EMC for the evaluation of AST in urine samples.
Collapse
|
18
|
Adator EH, Narvaez-Bravo C, Zaheer R, Cook SR, Tymensen L, Hannon SJ, Booker CW, Church D, Read RR, McAllister TA. A One Health Comparative Assessment of Antimicrobial Resistance in Generic and Extended-Spectrum Cephalosporin-Resistant Escherichia coli from Beef Production, Sewage and Clinical Settings. Microorganisms 2020; 8:microorganisms8060885. [PMID: 32545206 PMCID: PMC7355928 DOI: 10.3390/microorganisms8060885] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/27/2020] [Accepted: 06/08/2020] [Indexed: 12/18/2022] Open
Abstract
This study aimed to compare antimicrobial resistance (AMR) in extended-spectrum cephalosporin-resistant and generic Escherichia coli from a One Health continuum of the beef production system in Alberta, Canada. A total of 705 extended-spectrum cephalosporin-resistant E. coli (ESCr) were obtained from: cattle feces (CFeces, n = 382), catch basins (CBasins, n = 137), surrounding streams (SStreams, n = 59), beef processing plants (BProcessing, n = 4), municipal sewage (MSewage; n = 98) and human clinical specimens (CHumans, n = 25). Generic isolates (663) included: CFeces (n = 142), CBasins (n = 185), SStreams (n = 81), BProcessing (n = 159) and MSewage (n = 96). All isolates were screened for antimicrobial susceptibility to 9 antimicrobials and two clavulanic acid combinations. In ESCr, oxytetracycline (87.7%), ampicillin (84.4%) and streptomycin (73.8%) resistance phenotypes were the most common, with source influencing AMR prevalence (p < 0.001). In generic E. coli, oxytetracycline (51.1%), streptomycin (22.6%), ampicillin (22.5%) and sulfisoxazole (14.3%) resistance were most common. Overall, 88.8% of ESCr, and 26.7% of generic isolates exhibited multi-drug resistance (MDR). MDR in ESCr was high from all sources: CFeces (97.1%), MSewage (96.9%), CHumans (96%), BProcessing (100%), CBasins (70.5%) and SStreams (61.4%). MDR in generic E. coli was lower with CFeces (45.1%), CBasins (34.6%), SStreams (23.5%), MSewage (13.6%) and BProcessing (10.7%). ESBL phenotypes were confirmed in 24.7% (n = 174) ESCr and 0.6% of generic E. coli. Prevalence of bla genes in ESCr were blaCTXM (30.1%), blaCTXM-1 (21.6%), blaTEM (20%), blaCTXM-9 (7.9%), blaOXA (3.0%), blaCTXM-2 (6.4%), blaSHV (1.4%) and AmpC β-lactamase blaCMY (81.3%). The lower AMR in ESCr from SStreams and BProcessing and higher AMR in CHumans and CFeces likely reflects antimicrobial use in these environments. Although MDR levels were higher in ESCr as compared to generic E. coli, AMR to the same antimicrobials ranked high in both ESCr and generic E. coli sub-populations. This suggests that both sub-populations reflect similar AMR trends and are equally useful for AMR surveillance. Considering that MDR ESCr MSewage isolates were obtained without enrichment, while those from CFeces were obtained with enrichment, MSewage may serve as a hot spot for MDR emergence and dissemination.
Collapse
Affiliation(s)
- Emelia H. Adator
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; (E.H.A.); (C.N.-B.)
| | - Claudia Narvaez-Bravo
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; (E.H.A.); (C.N.-B.)
| | - Rahat Zaheer
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada;
| | - Shaun R. Cook
- Irrigation and Farm Water Branch, Alberta Agriculture and Forestry, Lethbridge, AB T1J 4V6, Canada; (S.R.C.); (L.T.)
| | - Lisa Tymensen
- Irrigation and Farm Water Branch, Alberta Agriculture and Forestry, Lethbridge, AB T1J 4V6, Canada; (S.R.C.); (L.T.)
| | - Sherry J. Hannon
- Health Management Services Ltd, Okotoks, AB T1S 2A2, Canada; (S.J.H.); (C.W.B.)
| | - Calvin W. Booker
- Health Management Services Ltd, Okotoks, AB T1S 2A2, Canada; (S.J.H.); (C.W.B.)
| | - Deirdre Church
- Department of Pathology & Laboratory Medicine and Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (D.C.); (R.R.R.)
| | - Ron R. Read
- Department of Pathology & Laboratory Medicine and Medicine, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (D.C.); (R.R.R.)
| | - Tim A. McAllister
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; (E.H.A.); (C.N.-B.)
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, Lethbridge, AB T1J 4B1, Canada;
- Correspondence:
| |
Collapse
|
19
|
Selim NA, Saeed AM, Ibrahim MK. Monitoring and controlling bacteria in pharmaceutical industries water system. J Appl Microbiol 2020; 129:1079-1090. [PMID: 32357285 DOI: 10.1111/jam.14686] [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] [Received: 02/25/2020] [Revised: 04/01/2020] [Accepted: 04/27/2020] [Indexed: 11/30/2022]
Abstract
AIM This research aimed to monitor pharmaceutical water system by sampling water from all treatment stages, identify bacterial isolates from each phase and determine the most suitable methods to control them. METHODS AND RESULTS Water samples were collected and examined from pharmaceutical water system in a pharmaceutical factory in Giza, Egypt during 12 months, once per month (from December 2017 to November 2018) from 15 points covering all stages of the treatment process starting from wells, pre-treatment points; treatment points ending with purified points which are the main source of water used in all pharmaceutical process. In all, 216 water samples were collected and examined, 156 isolates were selected according to morphological characteristics. VITEK system 2 (BioMérieux) was used for identification of all isolates resulting in 24 different identified bacteria. Antibiotic assay test using disc diffusion methods were carried out using seven antibiotics from different groups. Several disinfectants were also examined for efficacy against the isolates to control micro-organisms in water treatment stage and manufacturing area. The effect of different preservatives (parabens, acids and alcohols) in various pharmaceutical formulas was also tested on bacterial isolates, 63% of formulas were effective against all bacterial isolates. CONCLUSION Ciprofloxacin was the most effective antibiotic, mixture of 0·45% peracetic acid plus 2·2% of hydrogen peroxide (Minncare 1%) was maximally effective disinfectant, and Cronobacter sakazakii was the most resistant micro-organism against 22·7% of tested preservatives. SIGNIFICANCE AND IMPACT OF THE STUDY Controlling pharmaceutical manufacturing operation from pathogenic bacteria that affect the quality of drugs.
Collapse
Affiliation(s)
- N A Selim
- Department of Microbiology, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - A M Saeed
- Department of Microbiology, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - M K Ibrahim
- Department of Microbiology, Faculty of Science, Ain Shams University, Cairo, Egypt
| |
Collapse
|
20
|
Antibacterial Activity and Mechanism of Action of Methanol Extract from Kasturi Mango Fruit (Mangifera casturi) on Caries-Causing Bacterium Streptococcus mutans. JURNAL KIMIA SAINS DAN APLIKASI 2019. [DOI: 10.14710/jksa.22.6.235-241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
One of the problems frequently found in the oral cavity is dental caries caused by Streptococcus mutans. Thus far, dental caries is treated using antibiotics. However, the bacterium is known to be resistant to many antibiotics; hence, another alternative is needed. An alternative option is found in the Kasturi mango (Mangifera casturi). This study aims to identify the bioactive compounds of Kasturi mango and find out the mechanism of its action in inhibiting the growth of Streptococcus mutans. Kasturi mangoes were macerated using 96% methanol, then the phytochemical compounds were identified qualitatively. Antibacterial activity testing was carried out using the agar diffusion method, and bioactive compounds were identified using GCMS. The results showed that the methanol extract of Kasturi mango contains alkaloids, flavonoids, phenolics, terpenoids, and saponins. In 1 gr/mL of the methanol extract of Kasturi mango fruit has an inhibitory activity against the growth of Streptococcus mutans with a zone of inhibition of ± 10 mm and MIC (minimum inhibitory concentration) value of 25% extract. The inhibitory action is suspected to be through a mechanism where holes in the bacterial cell membrane are made. This can be seen from the results of SEM (scanning electron microscope) images showing that cell leakage or lysis has occurred. This research also, for the first time, revealed the types of bioactive compounds from the methanol extracts of Kasturi mango (Mangifera casturi) consisting of 18 compounds with the most abundance is 5-Hydroxymethylfurfural compounds, Octadecenoic acid, n-Hexadecanoic acid, Phenyl 4-methyl-1-piperidine carboxylate, and Methyl linolenate.
Collapse
|
21
|
Hassan AE, Mohammed SM, Abou‐Elkhair RAI, Moustafa AH. Synthesis and Biological Evaluation of Glycosides and Acyclic Nucleosides Derived 2‐Oxonicotinonitriles. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Abdalla E. Hassan
- Applied Nucleic Acids Research CenterZagazig University Zagazig Egypt
- Chemistry Department, Faculty of ScienceZagazig University Zagazig Egypt
| | - Samar M. Mohammed
- Chemistry Department, Faculty of ScienceZagazig University Zagazig Egypt
| | - Reham A. I. Abou‐Elkhair
- Applied Nucleic Acids Research CenterZagazig University Zagazig Egypt
- Chemistry Department, Faculty of ScienceZagazig University Zagazig Egypt
| | - Ahmed H. Moustafa
- Chemistry Department, Faculty of ScienceZagazig University Zagazig Egypt
| |
Collapse
|
22
|
Adiwibawa Prasetya NB, Ngadiwiyana, Ismiyarto, Sarjono PR. Synthesis and study of antibacterial activity of polyeugenol. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/509/1/012101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
23
|
Glycoside- and acyclic nucleoside-based 6-cyclohexyl-4-aryl-2-oxonicotinonitrile: synthesis and antimicrobial evaluation. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2019. [DOI: 10.1007/s13738-019-01662-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
24
|
Surwade P, Ghildyal C, Weikel C, Luxton T, Peloquin D, Fan X, Shah V. Augmented antibacterial activity of ampicillin with silver nanoparticles against methicillin-resistant Staphylococcus aureus (MRSA). J Antibiot (Tokyo) 2018; 72:50-53. [PMID: 30361634 DOI: 10.1038/s41429-018-0111-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/09/2018] [Accepted: 09/17/2018] [Indexed: 11/09/2022]
Abstract
At present, including failed attempts, it takes about 15 years and costs totaling up to $2.6 billion to take a promising new compound from laboratory to the market. Increasing drug resistance among microbial pathogens has led to a growing interest in exploring novel methods to enhance the efficacy of existing drugs. Combination therapies involving two or more known antimicrobial methods, particularly those involving nanoparticles for combating the clinical problems associated with antibiotic resistance, have been garnering interest. In the current study, we determined whether a combination therapy involving silver nanoparticles, which are known for their antimicrobial activity, and the widely used antibiotic ampicillin can be effective against methicillin-resistant Staphylococcus aureus (MRSA). In the presence of sub-lethal dose of silver nanoparticles, ampicillin was found to be effective against MRSA. Indeed, the results show that silver nanoparticles and ampicillin act synergistically, with the effect being more pronounced when a lower concentration of ampicillin is present. When present at a higher concentration, ampicillin coats the silver nanoparticle, preventing the direct interaction of nanoparticles and bacteria. This study discusses the possible applications of combination antimicrobial therapies involving silver nanoparticles for therapeutic treatments.
Collapse
Affiliation(s)
- Priyanka Surwade
- College of the Sciences and Mathematics, West Chester University of Pennsylvania, West Chester, PA, 19382, USA
| | - Christopher Ghildyal
- College of the Sciences and Mathematics, West Chester University of Pennsylvania, West Chester, PA, 19382, USA
| | - Chase Weikel
- College of the Sciences and Mathematics, West Chester University of Pennsylvania, West Chester, PA, 19382, USA
| | - Todd Luxton
- National Risk Management Research Laboratory, U.S. Environmental Protection Agency, Cincinnati, OH, 45224, USA
| | - Derek Peloquin
- Oak Ridge Institute for Science and Education (ORISE) Postdoctoral Research Associate, Cincinnati, OH, 45224, USA
| | - Xin Fan
- College of the Sciences and Mathematics, West Chester University of Pennsylvania, West Chester, PA, 19382, USA
| | - Vishal Shah
- College of the Sciences and Mathematics, West Chester University of Pennsylvania, West Chester, PA, 19382, USA.
| |
Collapse
|
25
|
Jelinkova P, Vesely R, Cihalova K, Hegerova D, Ananbeh HAAA, Richtera L, Smerkova K, Brtnicky M, Kynicky J, Moulick A, Adam V. Effect of arsenic (III and V) on oxidative stress parameters in resistant and susceptible Staphylococcus aureus. ENVIRONMENTAL RESEARCH 2018; 166:394-401. [PMID: 29936287 DOI: 10.1016/j.envres.2018.06.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 04/26/2018] [Accepted: 06/11/2018] [Indexed: 06/08/2023]
Abstract
The presented study deals with the observation of properties of methicillin-susceptible Staphylococcus aureus (MSSA) and methicillin-resistant S. aureus (MRSA) in the toxic arsenic environment and influence of arsenic on antioxidant capacity. Two forms of arsenic (As(III), As(V)) with different concentrations were used for induction of the oxidative stress in tested strains. Microbiological methods showed that the growth inhibition of MSSA was higher than that of MRSA in presence of both arsenic ions. As(III) showed 24% and 33% higher anti-microbial effects than As(V) against MSSA and MRSA respectively. A similar result was found also in the experiment of reduction of biofilm-formation. By using spectrophotometry, it was revealed that As(III) induced higher antioxidant production in both bacterial cultures. Methicillin-susceptible S. aureus produced an app. 50 mg equivalent of gallic acid (GAE/1 mg of protein) and MRSA produced an app. 15 mg of GAE/1 mg of protein. The productions of metallothionein in MSSA and MRSA were decreased up to 62.41% and 55.84% respectively in presence of As ions. Reduction of As(III) and As(V) concentrations leads to a decrease in antioxidant production and increased the formation of metallothionein. All of these changes in the results were found to be significant statistically. Taken together, these experiments proved that in comparison with MSSA, MRSA is less susceptible not only to the antimicrobial effects of antibiotics but also against effects caused by metalloids, as arsenic. Thus, it can be stated that MRSA abounds with complex defensive mechanisms, which may in the future constitute significant problem in the efficiency of antibiotics alternatives as metal ions or nanoparticles.
Collapse
Affiliation(s)
- Pavlina Jelinkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic
| | - Radek Vesely
- Department of Traumatology at the Medical Faculty, Masaryk University and Trauma Hospital of Brno, Ponavka 6, CZ-662 50 Brno, Czech Republic
| | - Kristyna Cihalova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Dagmar Hegerova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Hanadi Abd Alrahman Ali Ananbeh
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Kristyna Smerkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Martin Brtnicky
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic; Department of Geology and Pedology, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic
| | - Jindrich Kynicky
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Amitava Moulick
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; Central European Institute of Technology, Brno University of Technology, Purkynova 123, CZ-612 00 Brno, Czech Republic.
| |
Collapse
|
26
|
Costa RA, de Lira JV, Aragão MF. Biofilm-formation by drug-resistant Staphylococcus aureus from cow milk. J Verbrauch Lebensm 2018. [DOI: 10.1007/s00003-018-1186-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
27
|
Ma Y, Zhao Y, Tang J, Tang C, Chen J, Liu J. Antimicrobial susceptibility and presence of resistance & enterotoxins/enterotoxin-likes genes in Staphylococcus aureusfrom food. CYTA - JOURNAL OF FOOD 2018. [DOI: 10.1080/19476337.2017.1340341] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yisalan Ma
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Yanying Zhao
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Junni Tang
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Cheng Tang
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Juan Chen
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| | - Ji Liu
- College of life science and technology, Southwest University for Nationalities, Chengdu, China
| |
Collapse
|
28
|
Abstract
Bulk gold (Au) is known to be chemically inactive. However, when the size of Au nanoparticles (Au NPs) decreases to close to 1 nm or sub-nanometer dimensions, these ultrasmall Au nanoclusters (Au NCs) begin to possess interesting physical and chemical properties and likewise spawn different applications when working with bulk Au or even Au NPs. In this study, we found that it is possible to confer antimicrobial activity to Au NPs through precise control of their size down to NC dimension (typically less than 2 nm). Au NCs could kill both Gram-positive and Gram-negative bacteria. This wide-spectrum antimicrobial activity is attributed to the ultrasmall size of Au NCs, which would allow them to better interact with bacteria. The interaction between ultrasmall Au NCs and bacteria could induce a metabolic imbalance in bacterial cells after the internalization of Au NCs, leading to an increase of intracellular reactive oxygen species production that kills bacteria consequently.
Collapse
Affiliation(s)
- Kaiyuan Zheng
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585
| | - Magdiel I Setyawati
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585
| | - David Tai Leong
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585
| | - Jianping Xie
- Department of Chemical and Biomolecular Engineering, National University of Singapore , 4 Engineering Drive 4, Singapore 117585
| |
Collapse
|
29
|
Nejdl L, Kudr J, Moulick A, Hegerova D, Ruttkay-Nedecky B, Gumulec J, Cihalova K, Smerkova K, Dostalova S, Krizkova S, Novotna M, Kopel P, Adam V. Platinum nanoparticles induce damage to DNA and inhibit DNA replication. PLoS One 2017; 12:e0180798. [PMID: 28704436 PMCID: PMC5507526 DOI: 10.1371/journal.pone.0180798] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 06/21/2017] [Indexed: 12/13/2022] Open
Abstract
Sparsely tested group of platinum nanoparticles (PtNPs) may have a comparable effect as complex platinum compounds. The aim of this study was to observe the effect of PtNPs in in vitro amplification of DNA fragment of phage λ, on the bacterial cultures (Staphylococcus aureus), human foreskin fibroblasts and erythrocytes. In vitro synthesized PtNPs were characterized by dynamic light scattering (PtNPs size range 4.8-11.7 nm), zeta potential measurements (-15 mV at pH 7.4), X-ray fluorescence, UV/vis spectrophotometry and atomic absorption spectrometry. The PtNPs inhibited the DNA replication and affected the secondary structure of DNA at higher concentrations, which was confirmed by polymerase chain reaction, DNA sequencing and DNA denaturation experiments. Further, cisplatin (CisPt), as traditional chemotherapy agent, was used in all parallel experiments. Moreover, the encapsulation of PtNPs in liposomes (LipoPtNPs) caused an approximately 2.4x higher of DNA damage in comparison with CisPt, LipoCisPt and PtNPs. The encapsulation of PtNPs in liposomes also increased their antibacterial, cytostatic and cytotoxic effect, which was determined by the method of growth curves on S. aureus and HFF cells. In addition, both the bare and encapsulated PtNPs caused lower oxidative stress (determined by GSH/GSSG ratio) in the human erythrocytes compared to the bare and encapsulated CisPt. CisPt was used in all parallel experiments as traditional chemotherapy agent.
Collapse
Affiliation(s)
- Lukas Nejdl
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Jiri Kudr
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Amitava Moulick
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Dagmar Hegerova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Branislav Ruttkay-Nedecky
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Jaromir Gumulec
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Kristyna Cihalova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Kristyna Smerkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Simona Dostalova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Sona Krizkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Marie Novotna
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Pavel Kopel
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
- * E-mail:
| |
Collapse
|
30
|
Danilova IV, Toymentseva AA, Baranova DS, Sharipova MR. The Genetic Mechanism of Resistance to Antibiotics in Bacillus pumilus 3-19 Strain. BIONANOSCIENCE 2017. [DOI: 10.1007/s12668-016-0295-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
31
|
Schkarpetkin D, Reise M, Wyrwa R, Völpel A, Berg A, Schweder M, Schnabelrauch M, Watts DC, Sigusch BW. Development of novel electrospun dual-drug fiber mats loaded with a combination of ampicillin and metronidazole. Dent Mater 2016; 32:951-60. [PMID: 27262200 DOI: 10.1016/j.dental.2016.05.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 05/08/2016] [Indexed: 10/21/2022]
Abstract
OBJECTIVE Our study was performed with the aim of preparing electrospun polylactide fibers with a combination of ampicillin (AMP) and metronidazole (MNZ) and investigating their drug release behavior and the antibacterial effect on Aggregatibacter actinomycetemcomitans and other oral pathogens. METHODS AMP and MNZ were integrated as a combination in two separate fibers (dual fiber mats - DFW mix) of electrospun PLA fiber mats by means of multijet electrospinning and in a single fiber (single fiber mats - SFW mix). HPLC (high-performance liquid chromatography) was used to measure the released drug quantities. Agar diffusion tests were used to determine the antibacterial effect of the eluates on A. actinomycetemcomitans, Fusobacterium nucleatum, Porphyromonas gingivalis and Enterococcus faecalis. The neutral red test was made to examine the cytocompatibility of the eluates with human gingival fibroblasts (hGFs). RESULTS The release of the active agents varied with the antibiotic concentrations initially used in the fiber mats, but also with the distribution of the active agents in one or two fibers. Of the total quantity of MNZ (AMP), the SFW mix fiber mats released >60% (>70%) within a span of 5min, and 76% (71%) after 96h. With these drug concentrations released by the fiber mats (≥5m%), an antibacterial effect was achieved on A. actinomycetemcomitans and on all other species tested. Fiber mats and their eluates have no cytotoxic influence on human gingival fibroblasts (hGFs). SIGNIFICANCE Electrospun AMP/MNZ-loaded polymer fibers are a potential drug delivery system for use in periodontal and endodontic infections.
Collapse
Affiliation(s)
- Dennis Schkarpetkin
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der Alten Post 4, 07743 Jena, Germany
| | - Markus Reise
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der Alten Post 4, 07743 Jena, Germany.
| | - Ralf Wyrwa
- Department of Biomaterials, INNOVENT e.V., Prüssingstrasse 27B, 07743 Jena, Germany
| | - Andrea Völpel
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der Alten Post 4, 07743 Jena, Germany
| | - Albrecht Berg
- Department of Biomaterials, INNOVENT e.V., Prüssingstrasse 27B, 07743 Jena, Germany
| | - Martina Schweder
- Department of Biomaterials, INNOVENT e.V., Prüssingstrasse 27B, 07743 Jena, Germany
| | | | - David C Watts
- University of Manchester, School of Dentistry and Photon Science Institute, Manchester M13 9PL, UK
| | - Bernd W Sigusch
- Department of Conservative Dentistry and Periodontology, Jena University Hospital, An der Alten Post 4, 07743 Jena, Germany
| |
Collapse
|
32
|
Influence of microbiome species in hard-to-heal wounds on disease severity and treatment duration. Braz J Infect Dis 2015; 19:604-13. [PMID: 26518264 PMCID: PMC9425364 DOI: 10.1016/j.bjid.2015.08.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 08/04/2015] [Accepted: 08/08/2015] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Infections, mostly those associated with colonization of wound by different pathogenic microorganisms, are one of the most serious health complications during a medical treatment. Therefore, this study is focused on the isolation, characterization, and identification of microorganisms prevalent in superficial wounds of patients (n=50) presenting with bacterial infection. METHODS After successful cultivation, bacteria were processed and analyzed. Initially the identification of the strains was performed through matrix-assisted laser desorption/ionization time-of-flight mass spectrometry based on comparison of protein profiles (2-30kDa) with database. Subsequently, bacterial strains from infected wounds were identified by both matrix-assisted laser desorption/ionization time-of-flight mass spectrometry and sequencing of 16S rRNA gene 108. RESULTS The most prevalent species was Staphylococcus aureus (70%), and out of those 11% turned out to be methicillin-resistant (mecA positive). Identified strains were compared with patients' diagnoses using the method of artificial neuronal network to assess the association between severity of infection and wound microbiome species composition. Artificial neuronal network was subsequently used to predict patients' prognosis (n=9) with 85% success. CONCLUSIONS In all of 50 patients tested bacterial infections were identified. Based on the proposed artificial neuronal network we were able to predict the severity of the infection and length of the treatment.
Collapse
|
33
|
Xu YB, Xu JX, Chen JL, Huang L, Zhou SQ, Zhou Y, Wen LH. Antioxidative responses of Pseudomonas fluorescens YZ2 to simultaneous exposure of Zn and Cefradine. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:1788-1797. [PMID: 26141733 DOI: 10.1007/s10646-015-1516-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/24/2015] [Indexed: 06/04/2023]
Abstract
Binary pollution of both heavy metals and antibiotics has received increasing attentions for their joint effects of eco-toxicity and health hazards. To reveal the effects of mixtures of different pollutants on bacterial antioxidant response system, Pseudomonas fluorescens ZY2, a new strain isolated from swine wastewater, was chosen to determinate growth (bacterial density OD600), reactive oxygen species (ROS) concentration, protein concentration and superoxide dismutase (SOD) activity under exposure treatments of Zn, Cefradine or Zn + Cefradine. Bacterial densities of all the treatment groups increased significantly over the incubation time, but those containing pollutant addition were slightly lower than the control at different times of incubation. Both ROS concentration and SOD activity increased first and then decreased (p < 0.01) over time, which was opposite to the protein concentrations (p < 0.01), showing a much significant increase by Cefradine alone. With Zn concentration increasing from 40 to 160 mg/L, the intracellular SOD activity increased as a response to the improvement of ROS (p < 0.05), while the balance between ROS and SOD was broken down due to the disproportionate change of total SOD activity and ROS concentration, the bacterial densities therefore decreased for the weak resistance. With the combined treatment of Zn (200 mg/L) and Cefradine (1 mg/L), though the toxicity of Zn caused a much significant increase of ROS, the bacterial resistance was further improved showing a more significant increase of total SOD activity and the bacterial densities therefore increased bacterial growth. Zn concentration also affected the protein synthesis. Either single or binary stress induced the bacterial resistance by regulating SOD activity to eliminate ROS. All results of the bacterial oxidant stress, SOD response and protein synthesis in the combined treatment groups were more complicated than those in single treatment groups, which depended on the properties of the single treatment as well as the interaction between the two treatments upon bacterial activity. For P. fluorescens ZY2, the mediation of SOD activity to eliminate ROS in response to the combined exposure to Zn and Cefradine was first revealed as one of the co-resistance mechanisms, which is informative to further understanding the risk of antibiotics resistant bacteria to human and environmental health more accurately.
Collapse
Affiliation(s)
- Yan-Bin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China.
- College of Environmental Science and Engineering, South China University of Technology, Guangzhou, 510006, People's Republic of China.
- State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, 510641, People's Republic of China.
- Key Laboratory of Environmental Protection and Eco-remediation of Guangdong Regular Higher Education Institutions, Guangzhou Higher Education Mega Center, South China University of Technology, Guangzhou, 510006, People's Republic of China.
| | - Jia-Xin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Jin-Liang Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Lu Huang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Shao-Qi Zhou
- College of Environmental Science and Engineering, South China University of Technology, Guangzhou, 510006, People's Republic of China.
- State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, 510641, People's Republic of China.
- Key Laboratory of Environmental Protection and Eco-remediation of Guangdong Regular Higher Education Institutions, Guangzhou Higher Education Mega Center, South China University of Technology, Guangzhou, 510006, People's Republic of China.
- Guizhou Academy of Sciences, Shanxi Road 1#, Guiyang, 550001, People's Republic of China.
| | - Yan Zhou
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Li-Hua Wen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| |
Collapse
|
34
|
Effects of Stratospheric Conditions on the Viability, Metabolism and Proteome of Prokaryotic Cells. ATMOSPHERE 2015. [DOI: 10.3390/atmos6091290] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
35
|
|
36
|
Zhou Y, Xu YB, Xu JX, Zhang XH, Xu SH, Du QP. Combined toxic effects of heavy metals and antibiotics on a Pseudomonas fluorescens strain ZY2 isolated from swine wastewater. Int J Mol Sci 2015; 16:2839-50. [PMID: 25633105 PMCID: PMC4346868 DOI: 10.3390/ijms16022839] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 01/07/2015] [Accepted: 01/14/2015] [Indexed: 11/20/2022] Open
Abstract
A Pseudomonas fluorescens strain ZY2, isolated from swine wastewater, was used to investigate the synergistic effects of five heavy metals (Pb, Cu, Zn, Cr(VI) and Hg) on bacterial resistance to antibiotics. Results indicate that the combined effects of antibiotic type, heavy metal type and concentration were significant (p < 0.01). Cross-resistance to Hg and antibiotics was the most noticeable. Moreover, the resistance to Hg and cefradine or amoxicillin, and Cr and amoxicillin were synergistic for low heavy metal concentrations, and turned antagonistic with increasing concentrations, while the resistances to Cr or Cu and cefradine, Pb or Cu and amoxicillin, Cu and norfloxacin showed reverse effects. In addition, resistance to Zn and amoxicillin were always synergetic, while resistance to Pb and cefradine or norfloxacin, Cr or Hg and norfloxacin as well as all the heavy metals and tetracycline were antagonistic. These results indicate that bacterial resistance to antibiotics can be affected by the type and concentration of co-exposed heavy metals and may further threaten people’s health and ecological security severely via horizontal gene transfer.
Collapse
Affiliation(s)
- Yan Zhou
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Yan-Bin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Jia-Xin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Xiao-Hua Zhang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Shi-Hui Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Qing-Ping Du
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| |
Collapse
|
37
|
Chudobova D, Dostalova S, Ruttkay-Nedecky B, Guran R, Rodrigo MAM, Tmejova K, Krizkova S, Zitka O, Adam V, Kizek R. The effect of metal ions on Staphylococcus aureus revealed by biochemical and mass spectrometric analyses. Microbiol Res 2015; 170:147-56. [DOI: 10.1016/j.micres.2014.08.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 07/14/2014] [Accepted: 08/04/2014] [Indexed: 12/13/2022]
|