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Kulkarni SS, Tong DK, Wu CT, Kao CY, Chattopadhyay S. Defect Engineered Bi 2Te 3 Nanosheets with Enhanced Haloperoxidase Activity for Marine Antibiofouling. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401929. [PMID: 38934508 DOI: 10.1002/smll.202401929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/27/2024] [Indexed: 06/28/2024]
Abstract
Defective bismuth telluride (Bi2Te3) nanosheets, an artificial nanozyme mimicking haloperoxidase activity (hPOD), show promise as eco-friendly, bactericidal, and antimicrofouling materials by enhancing cytotoxic hypohalous acid production from halides and H2O2. Microscopic and spectroscopic characterization reveals that controlled NaOH (upto X = 250 µL) etching of the nearly inactive non-transition metal chalcogenide Bi2Te3 nanosheets creates controlled defects (d), such as Bi3+species, in d-Bi2Te3-X that induces enhanced hPOD activity. d-Bi2Te3-250 exhibits approximately eight-fold improved hPOD than the as-grown Bi2Te3 nanosheets. The antibacterial activity of d-Bi2Te3-250 nanozymes, studied by bacterial viability, show 1, and 45% viability for Staphylococcus aureus and Pseudomonas aeruginosa, respectively, prevalent in marine environments. The hPOD mechanism is confirmed using scavengers, implicating HOBr and singlet oxygen for the effect. The antimicrofouling property of the d-Bi2Te3-250 nanozyme has been studied on Pseudomonas aeruginosa biofilm in a lab setting by multiple assays, and also on titanium (Ti) plates coated with the nanozyme mixed commercial paint, exposed to seawater in a real setting. All studies, including direct microscopic evidence, exhibit inhibition of microfouling, up to ≈73%, in the presence of nanozymes. This approach showcases that defect engineering can induce antibacterial, and antimicrofouling activity in non-transition metal chalcogenides, offering an inexpensive alternative to noble metals.
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Affiliation(s)
- Sagar Sunil Kulkarni
- Institute of Biophotonics, National Yang-Ming Chiao Tung University, 155, Sec-2 Li Nong Street, Taipei, 112, Taiwan
| | - Dang Khoa Tong
- Institute of Microbiology and Immunology, College of Life Sciences, National Yang Ming Chiao Tung University, 155, Sec-2 Li Nong Street, Taipei, 112, Taiwan
| | - Chien-Ting Wu
- Taiwan Semiconductor Research Institute, National Applied Research Laboratories, Hsinchu, 300, Taiwan
| | - Cheng-Yen Kao
- Institute of Microbiology and Immunology, College of Life Sciences, National Yang Ming Chiao Tung University, 155, Sec-2 Li Nong Street, Taipei, 112, Taiwan
| | - Surojit Chattopadhyay
- Institute of Biophotonics, National Yang-Ming Chiao Tung University, 155, Sec-2 Li Nong Street, Taipei, 112, Taiwan
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2
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Ortiz Moyano R, Dentice Maidana S, Imamura Y, Elean M, Namai F, Suda Y, Nishiyama K, Melnikov V, Kitazawa H, Villena J. Antagonistic Effects of Corynebacterium pseudodiphtheriticum 090104 on Respiratory Pathogens. Microorganisms 2024; 12:1295. [PMID: 39065064 PMCID: PMC11278748 DOI: 10.3390/microorganisms12071295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/04/2024] [Accepted: 06/21/2024] [Indexed: 07/28/2024] Open
Abstract
In previous studies, it was demonstrated that Corynebacterium pseudodiphtheriticum 090104, isolated from the human nasopharynx, modulates respiratory immunity, improving protection against infections. Here, the antagonistic effect of the 090104 strain on respiratory pathogens, including Streptococcus pneumoniae, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii, was explored. In a series of in vitro studies, the capacity of C. pseudodiphtheriticum 090104, its bacterium-like particles, and its culture supernatants to coaggregate, inhibit the growth, and change the virulent phenotype of pathogenic bacteria was evaluated. The results showed that the 090104 strain was able to exert a bacteriostatic effect on K. pneumoniae and S. pneumoniae growth. In addition, C. pseudodiphtheriticum 090104 coaggregated, inhibited biofilm formation, and induced phenotypic changes in all the respiratory pathogens evaluated. In conclusion, this work demonstrated that, in addition to its beneficial effects exerted by host-microbe interactions, C. pseudodiphtheriticum 090104 can enhance protection against respiratory pathogens through its microbe-microbe interactions. The mechanisms involved in such interactions should be evaluated in future research.
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Affiliation(s)
- Ramiro Ortiz Moyano
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), San Miguel de Tucumán 4000, Argentina; (R.O.M.); (S.D.M.); (M.E.)
| | - Stefania Dentice Maidana
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), San Miguel de Tucumán 4000, Argentina; (R.O.M.); (S.D.M.); (M.E.)
| | - Yoshiya Imamura
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (Y.I.); (F.N.); (K.N.)
- Livestock Immunology Unit, International Education and Research Centre for Food and Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Mariano Elean
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), San Miguel de Tucumán 4000, Argentina; (R.O.M.); (S.D.M.); (M.E.)
| | - Fu Namai
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (Y.I.); (F.N.); (K.N.)
- Livestock Immunology Unit, International Education and Research Centre for Food and Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Yoshihito Suda
- Department of Food, Agriculture and Environment, Miyagi University, Sendai 980-8572, Japan;
| | - Keita Nishiyama
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (Y.I.); (F.N.); (K.N.)
- Livestock Immunology Unit, International Education and Research Centre for Food and Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Vyacheslav Melnikov
- Gabrichevsky Research Institute for Epidemiology and Microbiology, 125212 Moscow, Russia
| | - Haruki Kitazawa
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (Y.I.); (F.N.); (K.N.)
- Livestock Immunology Unit, International Education and Research Centre for Food and Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan
| | - Julio Villena
- Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), San Miguel de Tucumán 4000, Argentina; (R.O.M.); (S.D.M.); (M.E.)
- Food and Feed Immunology Group, Laboratory of Animal Food Function, Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan; (Y.I.); (F.N.); (K.N.)
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3
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Sarangi A, Singh SP, Das BS, Rajput S, Fatima S, Bhattacharya D. Mycobacterial biofilms: A therapeutic target against bacterial persistence and generation of antibiotic resistance. Heliyon 2024; 10:e32003. [PMID: 38882302 PMCID: PMC11176842 DOI: 10.1016/j.heliyon.2024.e32003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/24/2024] [Accepted: 05/27/2024] [Indexed: 06/18/2024] Open
Abstract
Mycobacterium tuberculosis (M. tb) is the causative agent of Tuberculosis, one of the deadliest infectious diseases. According to the WHO Report 2023, in 2022, approximately 10.6 million people got infected with TB, and 1.6 million died. It has multiple antibiotics for treatment, but the major drawback of anti-tuberculosis therapy (ATT) is, its prolonged treatment duration. The major contributors to the lengthy treatment period are mycobacterial persistence and drug tolerance. Persistent M. tb is phenotypically drug tolerant and metabolically slow down which makes it difficult to be eliminated during ATT. These persisting bacteria are a huge reservoir of impending disease, waiting to get reactivated upon the onset of an immune compromising state. Directly Observed Treatment Short-course, although effective against replicating bacteria; fails to eliminate the drug-tolerant persisters making TB still the second-highest killer globally. There are different mechanisms for the development of drug-tolerant mycobacterial populations being investigated. Recently, the role of biofilms in the survival and host-evasion mechanism of persisters has come to light. Therefore, it is crucial to understand the mechanism of adaptation, survival and attainment of drug tolerance by persisting M. tb-populations, in order to design better immune responses and therapeutics for the effective elimination of these bacteria by reducing the duration of treatment and also circumvent the generation of drug-resistance to achieve the goal of global eradication of TB. This review summarizes the drug-tolerance mechanism and biofilms' role in providing a niche to dormant-M.tb. We also discuss methods of targeting biofilms to achieve sterile eradication of the mycobacteria and prevent its reactivation by achieving adequate immune responses.
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Affiliation(s)
- Ashirbad Sarangi
- Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Shashi Prakash Singh
- Vaccine and Gene Therapy Institute (VGTI) Oregon National Primate Research Centre (ONPRC) Oregon Health and Science University (OHSU) Beaverton, Oregon, USA
| | - Bhabani Shankar Das
- Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Sristi Rajput
- Departmental of Biological Sciences, Indian Institute of Science Education and Research (IISER), Bhopal, Madhya Pradesh, India
| | - Samreen Fatima
- UMass Chan Medical School, University of Massachusetts, Worcester, MA, USA
| | - Debapriya Bhattacharya
- Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
- Departmental of Biological Sciences, Indian Institute of Science Education and Research (IISER), Bhopal, Madhya Pradesh, India
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Lim J, Matsuoka H, Kinoshita Y, Yusa SI, Saruwatari Y. The Effect of Block Ratio and Structure on the Thermosensitivity of Double and Triple Betaine Block Copolymers. Molecules 2024; 29:390. [PMID: 38257304 PMCID: PMC10820771 DOI: 10.3390/molecules29020390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 12/29/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
AB-type and BAB-type betaine block copolymers composed of a carboxybetaine methacrylate and a sulfobetaine methacrylate, PGLBT-b-PSPE and PSPE-b-PGLBT-b-PSPE, respectively, were synthesized by one-pot RAFT polymerization. By optimizing the concentration of the monomer, initiator, and chain transfer agent, block extension with precise ratio control was enabled and a full conversion (~99%) of betaine monomers was achieved at each step. Two sets (total degree of polymerization: ~300 and ~600) of diblock copolymers having four different PGLBT:PSPE ratios were prepared to compare the influence of block ratio and molecular weight on the temperature-responsive behavior in aqueous solution. A turbidimetry and dynamic light scattering study revealed a shift to higher temperatures of the cloud point and micelle formation by increasing the ratio of PSPE, which exhibit upper critical solution temperature (UCST) behavior. PSPE-dominant diblocks created spherical micelles stabilized by PGLBT motifs, and the transition behavior diminished by decreasing the PSPE ratio. No particular change was found in the diblocks that had an identical AB ratio. This trend reappeared in the other set whose entire molecular weight approximately doubled, and each transition point was not recognizably impacted by the total molecular weight. For triblocks, the PSPE double ends provided a higher probability of interchain attractions and resulted in a more turbid solution at higher temperatures, compared to the diblocks which had similar block ratios and molecular weights. The intermediates assumed as network-like soft aggregates eventually rearranged to monodisperse flowerlike micelles. It is expected that the method for obtaining well-defined betaine block copolymers, as well as the relationship of the block ratio and the chain conformation to the temperature-responsive behavior, will be helpful for designing betaine-based polymeric applications.
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Affiliation(s)
- Jongmin Lim
- Department of Polymer Chemistry, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan;
| | - Hideki Matsuoka
- Department of Polymer Chemistry, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan;
| | - Yusuke Kinoshita
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Hyogo, Japan; (Y.K.); (S.-i.Y.)
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji 671-2280, Hyogo, Japan; (Y.K.); (S.-i.Y.)
| | - Yoshiyuki Saruwatari
- Osaka Organic Chemical Industry Ltd., 7-20 Azuchi-machi, 1chome, Chuo-ku, Osaka 541-0052, Japan;
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Bos RP, Kaul D, Zettler ER, Hoffman JM, Dupont CL, Amaral-Zettler LA, Mincer TJ. Plastics select for distinct early colonizing microbial populations with reproducible traits across environmental gradients. Environ Microbiol 2023; 25:2761-2775. [PMID: 37132662 DOI: 10.1111/1462-2920.16391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 04/19/2023] [Indexed: 05/04/2023]
Abstract
Little is known about early plastic biofilm assemblage dynamics and successional changes over time. By incubating virgin microplastics along oceanic transects and comparing adhered microbial communities with those of naturally occurring plastic litter at the same locations, we constructed gene catalogues to contrast the metabolic differences between early and mature biofilm communities. Early colonization incubations were reproducibly dominated by Alteromonadaceae and harboured significantly higher proportions of genes associated with adhesion, biofilm formation, chemotaxis, hydrocarbon degradation and motility. Comparative genomic analyses among the Alteromonadaceae metagenome assembled genomes (MAGs) highlighted the importance of the mannose-sensitive hemagglutinin (MSHA) operon, recognized as a key factor for intestinal colonization, for early colonization of hydrophobic plastic surfaces. Synteny alignments of MSHA also demonstrated positive selection for mshA alleles across all MAGs, suggesting that mshA provides a competitive advantage for surface colonization and nutrient acquisition. Large-scale genomic characteristics of early colonizers varied little, despite environmental variability. Mature plastic biofilms were composed of predominantly Rhodobacteraceae and displayed significantly higher proportions of carbohydrate hydrolysis enzymes and genes for photosynthesis and secondary metabolism. Our metagenomic analyses provide insight into early biofilm formation on plastics in the ocean and how early colonizers self-assemble, compared to mature, phylogenetically and metabolically diverse biofilms.
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Affiliation(s)
- Ryan P Bos
- Harbor Branch Oceanographic Institute, Florida Atlantic University, Fort Pierce, Florida, USA
| | - Drishti Kaul
- Environmental Sustainability, J. Craig Venter Institute, La Jolla, California, USA
| | - Erik R Zettler
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands
| | - Jeffrey M Hoffman
- Environmental Sustainability, J. Craig Venter Institute, La Jolla, California, USA
| | - Christopher L Dupont
- Environmental Sustainability, J. Craig Venter Institute, La Jolla, California, USA
| | - Linda A Amaral-Zettler
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, Texel, The Netherlands
- Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, The Netherlands
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, USA
| | - Tracy J Mincer
- Harbor Branch Oceanographic Institute, Florida Atlantic University, Fort Pierce, Florida, USA
- Department of Biology, Wilkes Honors College, Florida Atlantic University, Jupiter, Florida, USA
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6
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Wang Y, Wu Y, Niu H, Liu Y, Ma Y, Wang X, Li Z, Dong Q. Different cellular fatty acid pattern and gene expression of planktonic and biofilm state Listeria monocytogenes under nutritional stress. Food Res Int 2023; 167:112698. [PMID: 37087265 DOI: 10.1016/j.foodres.2023.112698] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/05/2023] [Accepted: 03/14/2023] [Indexed: 03/28/2023]
Abstract
Listeria monocytogenes is a Gram-positive bacterium frequently involved in food-borne disease outbreaks and is widely distributed in the food-processing environment. This work aims to depict the impact of nutrition deficiency on the survival strategy of L. monocytogenes both in planktonic and biofilm states. In the present study, cell characteristics (autoaggression, hydrophobicity and motility), membrane fatty acid composition of MRL300083 (Lm83) in the forms of planktonic and biofilm-associated cells cultured in TSB-YE and 10-fold dilutions of TSB-YE (DTSB-YE) were investigated. Additionally, the relative expression of related genes were also determined by RT-qPCR. It was observed that cell growth in different bacterial life modes under nutritional stress rendered the cells a distinct phenotype. The higher autoaggression (AAG) and motility of the planktonic cells in DTSB-YE is associated with better biofilm formation. An increased proportion of unsaturated fatty acid/saturated fatty acid (USFA/SFA) indicates more fluidic biophysical properties for cell membranes of L. monocytogenes in planktonic and biofilm cells in DTSB-YE. Biofilm cells produced a higher percentage of USFA and straight fatty acids than the corresponding planktonic cells. An appropriate degree of membrane fluidity is crucial for survival, and alteration of membrane lipids is an essential adaptive response. The adaptation of bacteria to stress is a multifactorial cellular process, the expression of flagella-related genes fliG, fliP, flgE and the two-component chemotactic system cheA/Y genes of planktonic cells in DTSB-YE significantly increased compared to that in TSB-YE (p < 0.05). This study provides new information on the role of the physiological adaptation and gene expression of L. monocytogenes for planktonic and biofilm growth under nutritional stress.
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Affiliation(s)
- Yuan Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China; School of Food and Drugs, Shanghai Zhongqiao Vocational and Technical University, Shanghai 201514, China
| | - Youzhi Wu
- School of Food and Drugs, Shanghai Zhongqiao Vocational and Technical University, Shanghai 201514, China
| | - Hongmei Niu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yangtai Liu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yue Ma
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiang Wang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Zhuosi Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
| | - Qingli Dong
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
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Natsi PD, Koutsoukos PG. Calcium Carbonate Mineralization of Microalgae. Biomimetics (Basel) 2022; 7:biomimetics7040140. [PMID: 36278697 PMCID: PMC9589979 DOI: 10.3390/biomimetics7040140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/24/2022] Open
Abstract
Biological substrates catalyze the nucleation and growth of sparingly soluble salts however, the underlying mechanism is largely unknown. In the present study, the growth of calcium carbonate (CaCO3), on Acutodesmus obliquus (AO) microalgae was investigated. The test microalgae favored the growth of CaCO3 from solutions supersaturated with respect to calcite (7.94 < SRcalcite < 104.71). The precipitation of calcite on AO was not preceded by measurable induction times, and the rates of calcite crystal growth were higher for higher microalgae cell concentrations. The presence of the microalgae cultivation medium and illumination of the supersaturated solutions accelerated the precipitation of CaCO3, increasing the rate by 75% in comparison with the respective value in its absence. AO cultures, air dried at 25 °C yielded higher precipitation rates, in comparison with the respective rates in the presence of active AO cultures. At 70 °C, nucleation and growth were suppressed, due to the destruction of the molecular structure of the microalgae. The CaCO3 precipitation rates on calcite precipitated on air-dried AO culture, were doubled in comparison with the respective rates obtained with the respective quantities of each component of the composite substrate.
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Affiliation(s)
- Panagiota D. Natsi
- Institute of Chemical Engineering Sciences, FORTH/ICE-HT, 26500 Patras, Greece
- Laboratory of Inorganic & Analytical Chemistry, Department of Chemical Engineering, University of Patras, 26500 Patras, Greece
| | - Petros G. Koutsoukos
- Institute of Chemical Engineering Sciences, FORTH/ICE-HT, 26500 Patras, Greece
- Laboratory of Inorganic & Analytical Chemistry, Department of Chemical Engineering, University of Patras, 26500 Patras, Greece
- Correspondence:
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Sharan M, Vijay D, Dhaka P, Bedi JS, Gill JPS. Biofilms as a microbial hazard in the food industry: A scoping review. J Appl Microbiol 2022; 133:2210-2234. [PMID: 35945912 DOI: 10.1111/jam.15766] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/06/2022] [Indexed: 11/29/2022]
Abstract
Biofilms pose a serious public health hazard with a significant economic impact on the food industry. The present scoping review is designed to analyze the literature published during 2001-2020 on biofilm formation of microbes, their detection methods, and association with antimicrobial resistance (if any). The peer-reviewed articles retrieved from 04 electronic databases were assessed using PRISMA-ScR guidelines. From the 978 preliminary search results, a total of 88 publications were included in the study. On analysis, the commonly isolated pathogens were Listeria monocytogenes, Staphylococcus aureus, Salmonella spp., Escherichia coli, Bacillus spp., Vibrio spp., Campylobacter jejuni and Clostridium perfringens. The biofilm-forming ability of microbes was found to be influenced by various factors such as attachment surfaces, temperature, presence of other species, nutrient availability etc. A total of 18 studies characterized the biofilm-forming genes, particularly for S. aureus, Salmonella spp., and E. coli. In most studies, polystyrene plate and/or stainless-steel coupons were used for biofilm formation, and the detection was carried out by crystal violet assays and/or by plate counting method. The strain-specific significant differences in biofilm formation were observed in many studies, and few studies carried out analysis of multi-species biofilms. The association between biofilm formation and antimicrobial resistance wasn't clearly defined. Further, viable but non-culturable (VBNC) form of the foodborne pathogens is posing an unseen (by conventional cultivation techniques) but potent threat food safety. The present review recommends the need for carrying out systematic surveys and risk analysis of biofilms in food chain to highlight the evidence-based public health concerns, especially in regions where microbiological food hazards are quite prevalent.
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Affiliation(s)
- Manjeet Sharan
- Centre for One Health, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Deepthi Vijay
- Centre for One Health, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India.,Present Address: Department of Veterinary Public Health, College of Veterinary and Animal Sciences, Kerala, India
| | - Pankaj Dhaka
- Centre for One Health, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Jasbir Singh Bedi
- Centre for One Health, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
| | - Jatinder Paul Singh Gill
- Centre for One Health, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, India
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Sonawane JM, Rai AK, Sharma M, Tripathi M, Prasad R. Microbial biofilms: Recent advances and progress in environmental bioremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 824:153843. [PMID: 35176385 DOI: 10.1016/j.scitotenv.2022.153843] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/15/2022] [Accepted: 02/09/2022] [Indexed: 05/21/2023]
Abstract
Microbial biofilms are formed by adherence of the bacteria through their secreted polymer matrices. The major constituents of the polymer matrices are extracellular DNAs, proteins, polysaccharides. Biofilms have exhibited a promising role in the area of bioremediation. These activities can be further improved by tuning the parameters like quorum sensing, characteristics of the adhesion surface, and other environmental factors. Organic pollutants have created a global concern because of their long-term toxicity on human, marine, and animal life. These contaminants are not easily degradable and continue to prevail in the environment for an extended period. Biofilms are being used for the remediation of different pollutants, among which organic pollutants have been of significance. The bioremediation of organic contaminants using biofilms is an eco-friendly, cheap, and green process. However, the development of this technology demands knowledge on the mechanism of action of the microbes to form the biofilm, types of specific bacteria or fungi responsible for the degradation of a particular organic compound, and the mechanistic role of the biofilm in the degradation of the pollutants. This review puts forth a comprehensive summary of the role of microbial biofilms in the bioremediation of different environment-threatening organic pollutants.
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Affiliation(s)
- Jayesh M Sonawane
- Department of Chemistry, Alexandre-Vachon Pavilion, Laval University, Quebec G1V 0A6, Canada
| | - Ashutosh Kumar Rai
- Department of Biochemistry, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Minaxi Sharma
- Department of Applied Biology, University of Science and Technology, Meghalaya, 793101, India
| | - Manikant Tripathi
- Biotechnology Program, Dr. Rammanohar Lohia Avadh University, Ayodhya 224001, Uttar Pradesh, India
| | - Ram Prasad
- Department of Botany, Mahatma Gandhi Central University, Motihari 845401, Bihar, India.
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10
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Luo Q, Li J, Wang W, Li Y, Li Y, Huo X, Li J, Wang N. Transition Metal Engineering of Molybdenum Disulfide Nanozyme for Biomimicking Anti-Biofouling in Seawater. ACS APPLIED MATERIALS & INTERFACES 2022; 14:14218-14225. [PMID: 35289595 DOI: 10.1021/acsami.2c00172] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nature has evolved diverse strategies to battle surface biofouling colonization and thus provides us novel insights into designing and developing advanced nontoxic antibiofouling materials and technologies. Mimicking the defense mechanisms of natural haloperoxidases in marine algae in response to biofilm colonization, here we show that the less active MoS2 shows efficient haloperoxidase-mimicking activity through judicious transition metal engineering. Cobalt-doped MoS2 (Co-MoS2) displays an excellent haloperoxidase-mimicking performance in catalyzing the Br- oxidation into germicidal HOBr, roughly 2 and 23 times higher than the nickel-doped MoS2 and pristine MoS2, respectively. Accordingly, Co-MoS2 shows an outstanding antimicrobial effect against drug-resistant bacteria and antibiofouling performance in real field tests in marine environments. The realization of robust haloperoxidase-mimicking activity of MoS2 via metal engineering may open a new avenue to design highly active transition metal dichalcogenides for antibacterial and antibiofouling applications.
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Affiliation(s)
- Qiang Luo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Jinyang Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Wei Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Yunhong Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Yilan Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Xiaobing Huo
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Jianbao Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
| | - Ning Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, P. R. China
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11
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Biofilm Formation by Pathogenic Bacteria: Applying a Staphylococcus aureus Model to Appraise Potential Targets for Therapeutic Intervention. Pathogens 2022; 11:pathogens11040388. [PMID: 35456063 PMCID: PMC9027693 DOI: 10.3390/pathogens11040388] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 01/02/2023] Open
Abstract
Carried in the nasal passages by up to 30% of humans, Staphylococcus aureus is recognized to be a successful opportunistic pathogen. It is a frequent cause of infections of the upper respiratory tract, including sinusitis, and of the skin, typically abscesses, as well as of food poisoning and medical device contamination. The antimicrobial resistance of such, often chronic, health conditions is underpinned by the unique structure of bacterial biofilm, which is the focus of increasing research to try to overcome this serious public health challenge. Due to the protective barrier of an exopolysaccharide matrix, bacteria that are embedded within biofilm are highly resistant both to an infected individual’s immune response and to any treating antibiotics. An in-depth appraisal of the stepwise progression of biofilm formation by S. aureus, used as a model infection for all cases of bacterial antibiotic resistance, has enhanced understanding of this complicated microscopic structure and served to highlight possible intervention targets for both patient cure and community infection control. While antibiotic therapy offers a practical means of treatment and prevention, the most favorable results are achieved in combination with other methods. This review provides an overview of S. aureus biofilm development, outlines the current range of anti-biofilm agents that are used against each stage and summarizes their relative merits.
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12
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Mycobacterial Adhesion: From Hydrophobic to Receptor-Ligand Interactions. Microorganisms 2022; 10:microorganisms10020454. [PMID: 35208908 PMCID: PMC8875947 DOI: 10.3390/microorganisms10020454] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 02/07/2022] [Accepted: 02/12/2022] [Indexed: 11/24/2022] Open
Abstract
Adhesion is crucial for the infective lifestyles of bacterial pathogens. Adhesion to non-living surfaces, other microbial cells, and components of the biofilm extracellular matrix are crucial for biofilm formation and integrity, plus adherence to host factors constitutes a first step leading to an infection. Adhesion is, therefore, at the core of pathogens’ ability to contaminate, transmit, establish residency within a host, and cause an infection. Several mycobacterial species cause diseases in humans and animals with diverse clinical manifestations. Mycobacterium tuberculosis, which enters through the respiratory tract, first adheres to alveolar macrophages and epithelial cells leading up to transmigration across the alveolar epithelium and containment within granulomas. Later, when dissemination occurs, the bacilli need to adhere to extracellular matrix components to infect extrapulmonary sites. Mycobacteria causing zoonotic infections and emerging nontuberculous mycobacterial pathogens follow divergent routes of infection that probably require adapted adhesion mechanisms. New evidence also points to the occurrence of mycobacterial biofilms during infection, emphasizing a need to better understand the adhesive factors required for their formation. Herein, we review the literature on tuberculous and nontuberculous mycobacterial adhesion to living and non-living surfaces, to themselves, to host cells, and to components of the extracellular matrix.
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Rose LJ, Houston H, Martinez-Smith M, Lyons AK, Whitworth C, Reddy SC, Noble-Wang J. Factors influencing environmental sampling recovery of healthcare pathogens from non-porous surfaces with cellulose sponges. PLoS One 2022; 17:e0261588. [PMID: 35025906 PMCID: PMC8757884 DOI: 10.1371/journal.pone.0261588] [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: 07/22/2021] [Accepted: 12/04/2021] [Indexed: 11/18/2022] Open
Abstract
Results from sampling healthcare surfaces for pathogens are difficult to interpret without understanding the factors that influence pathogen detection. We investigated the recovery of four healthcare-associated pathogens from three common surface materials, and how a body fluid simulant (artificial test soil, ATS), deposition method, and contamination levels influence the percent of organisms recovered (%R). Known quantities of carbapenemase-producing KPC+ Klebsiella pneumoniae (KPC), Acinetobacter baumannii, vancomycin-resistant Enterococcus faecalis, and Clostridioides difficile spores (CD) were suspended in Butterfield's buffer or ATS, deposited on 323cm2 steel, plastic, and laminate surfaces, allowed to dry 1h, then sampled with a cellulose sponge wipe. Bacteria were eluted, cultured, CFU counted and %R determined relative to the inoculum. The %R varied by organism, from <1% (KPC) to almost 60% (CD) and was more dependent upon the organism's characteristics and presence of ATS than on surface type. KPC persistence as determined by culture also declined by >1 log10 within the 60 min drying time. For all organisms, the %R was significantly greater if suspended in ATS than if suspended in Butterfield's buffer (p<0.05), and for most organisms the %R was not significantly different when sampled from any of the three surfaces. Organisms deposited in multiple droplets were recovered at equal or higher %R than if spread evenly on the surface. This work assists in interpreting data collected while investigating a healthcare infection outbreak or while conducting infection intervention studies.
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Affiliation(s)
- Laura J. Rose
- Division of Healthcare Quality Promotion, National Center for Emerging and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Hollis Houston
- Division of Healthcare Quality Promotion, National Center for Emerging and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Marla Martinez-Smith
- Division of Healthcare Quality Promotion, National Center for Emerging and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Amanda K. Lyons
- Division of Healthcare Quality Promotion, National Center for Emerging and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Carrie Whitworth
- Division of Healthcare Quality Promotion, National Center for Emerging and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Sujan C. Reddy
- Division of Healthcare Quality Promotion, National Center for Emerging and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Judith Noble-Wang
- Division of Healthcare Quality Promotion, National Center for Emerging and Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
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14
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Bruno V, Tjon J, Lin S, Groves H, Kazmi K, Zappitelli M, Harvey E. Peritoneal dialysis-related peritonitis caused by Gordonia bronchialis: first pediatric report. Pediatr Nephrol 2022; 37:217-220. [PMID: 34633526 PMCID: PMC8503381 DOI: 10.1007/s00467-021-05313-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 09/21/2021] [Accepted: 09/21/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Gordonia species, aerobic, weakly acid-fast, Gram-positive bacilli, are a rare cause of peritonitis in patients undergoing peritoneal dialysis (PD). We report the first pediatric case of PD-related peritonitis caused by Gordonia bronchialis. CASE PRESENTATION A 13-year-old girl with chronic kidney disease (CKD) stage 5D, on continuous cycling PD (CCPD) for 8 years, presented with cloudy PD effluent, with no abdominal discomfort or fever. Intra-peritoneal (IP) loading doses of vancomycin and ceftazidime were started at home after obtaining a PD effluent sample, which showed WBC 2,340 × 10 /L (59% neutrophils) and Gram-positive bacilli. On admission, she was clinically well and afebrile, with no history of methicillin-resistant Staphylococcus aureus (MRSA) infection, so vancomycin was discontinued, and IP ceftazidime and cefazolin were started, following a loading dose of intravenous cefazolin. Gordonia species grew after 5 days of incubation and later identified as Gordonia bronchialis. IP vancomycin was restarted as monotherapy, empirically for a total of 3 weeks therapy. A 2-week course of oral ciprofloxacin was added, based on susceptibility testing. PD catheter replacement was advised due to the risk of recurrence but was refused. A relapse occurred 16 days after discontinuing antibiotics, successfully treated with a 2-week course of IP ceftazidime and vancomycin. The PD catheter was removed and hemodialysis initiated. She received a further 2-week course of oral ciprofloxacin and amoxicillin-clavulanate post PD catheter removal. CONCLUSIONS Gordonia bronchialis is an emerging pathogen in PD peritonitis and appears to be associated with a high risk of relapse. PD catheter replacement is strongly suggested.
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Affiliation(s)
- Valentina Bruno
- Division of Nephrology, The Hospital for Sick Children, 555 University Avenue, Toronto, ON, M5G 1X8, Canada. .,Department of Paediatrics, University of Toronto, Toronto, ON, Canada.
| | - James Tjon
- Department of Pharmacy, The Hospital for Sick Children, Toronto, ON Canada
| | - Sandy Lin
- Department of Nursing, The Hospital for Sick Children, Toronto, ON Canada
| | - Helen Groves
- Department of Paediatrics, University of Toronto, Toronto, ON Canada ,Division of Infectious Diseases, The Hospital for Sick Children, Toronto, ON Canada
| | - Kescha Kazmi
- Department of Paediatrics, University of Toronto, Toronto, ON Canada ,Division of Infectious Diseases, The Hospital for Sick Children, Toronto, ON Canada
| | - Michael Zappitelli
- Division of Nephrology, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8 Canada ,Department of Paediatrics, University of Toronto, Toronto, ON Canada
| | - Elizabeth Harvey
- Division of Nephrology, The Hospital for Sick Children, 555 University Avenue, Toronto, ON M5G 1X8 Canada ,Department of Paediatrics, University of Toronto, Toronto, ON Canada
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15
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Wong PC, Wang RY, Lu LS, Wang WR, Jang JSC, Wu JL, Su TY, Chang LH. Two-Step Approach Using Degradable Magnesium to Inhibit Surface Biofilm and Subsequently Kill Planktonic Bacteria. Biomedicines 2021; 9:biomedicines9111677. [PMID: 34829908 PMCID: PMC8615932 DOI: 10.3390/biomedicines9111677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 11/08/2021] [Accepted: 11/10/2021] [Indexed: 11/16/2022] Open
Abstract
Bacterial infection remains a great risk in medical implantation surgery. In this paper, we found that degradable metals may be a feasible alternative option of antibacterial implantation materials. It is known that the spalling mechanism of magnesium (Mg) during degradation leads to Mg ions-induced alkaline environment, which is harmful to planktonic bacteria. In this study, we showed that alkaline pH environment is almost harmless to those adhesive bacteria protected in well-formed biofilms. Moreover, experimental results demonstrated that the biofilm formed in the place where Mg spalls are destroyed, releasing the covered bacteria to be planktonic in the alkaline environment. As a result, the colonization of biofilms continues to shrink during the degradation of Mg. It implies that if degradable metal is employed as implantation material, even if bacterial infection occurs, it may be possibly cured without second surgery.
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Affiliation(s)
- Pei-Chun Wong
- Department of Orthopedics, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Department of Orthopedics, Taipei Medical University Hospital, Taipei 11031, Taiwan
- Orthopedics Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
| | - Ren-Yi Wang
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan; (R.-Y.W.); (L.-S.L.)
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
| | - Long-Sheng Lu
- Graduate Institute of Biomedical Materials and Tissue Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan; (R.-Y.W.); (L.-S.L.)
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei Medical University, Taipei 11031, Taiwan
| | - Wei-Ru Wang
- School of Biomedical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan;
| | - Jason Shian-Ching Jang
- Department of Mechanical Engineering, National Central University, Taoyuan 32001, Taiwan
- Institute of Materials Science and Engineering, National Central University, Taoyuan 32001, Taiwan
- Correspondence: (J.S.-C.J.); (J.-L.W.); (T.-Y.S.); (L.-H.C.)
| | - Jia-Lin Wu
- Department of Orthopedics, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan;
- Department of Orthopedics, Taipei Medical University Hospital, Taipei 11031, Taiwan
- Orthopedics Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
- Centers for Regional Anesthesia and Pain Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11600, Taiwan
- Correspondence: (J.S.-C.J.); (J.-L.W.); (T.-Y.S.); (L.-H.C.)
| | - Tai-Yuan Su
- Department Electrical Engineering, Yuan-Ze University, Chung-Li 32003, Taiwan
- Correspondence: (J.S.-C.J.); (J.-L.W.); (T.-Y.S.); (L.-H.C.)
| | - Ling-Hua Chang
- Department Electrical Engineering, Yuan-Ze University, Chung-Li 32003, Taiwan
- Correspondence: (J.S.-C.J.); (J.-L.W.); (T.-Y.S.); (L.-H.C.)
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16
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Efficient biodesulfurization of diesel oil by Gordonia sp. SC-10 with highly hydrophobic cell surfaces. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108094] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Wang Q, Ko JH, Liu F, Xiong W, Wang X, Xu Q. Bio-clogging mitigation in the leachate collection system of municipal solid waste landfill using graphene oxide-coated geotextiles. CHEMOSPHERE 2021; 268:128779. [PMID: 33172671 DOI: 10.1016/j.chemosphere.2020.128779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/21/2020] [Accepted: 10/24/2020] [Indexed: 06/11/2023]
Abstract
In this study, graphene oxide (GO) was coated in geotextiles (GO-GT) to evaluate its potential for bio-clogging mitigation in the leachate collection system (LCS) of a landfill. Results showed that GO coating enhanced the surface hydrophilicity of geotextile. Bacterial experiments revealed that dead cells in the bio-clogging increased to 68.7% with GO-GT, compared to that in the GT (44.0%). After 136 days of operation, the GO-GT reduced the bio-clogging by decreasing the total amount of bacteria and the percentage of living bacteria. The total amount of extracellular polymeric substances in the GO-GT and GT was 22.8 ± 4.4 and 52.8 ± 4.8 mg/g of volatile suspended solids, respectively. Microbial analysis showed that Limnochordia and Symbiobacteriia were the most sensitive groups, with a decreased percentage in the GO-GT. Electrostatic repulsion and surface wrinkling were attributed to the attenuation effect on the GO-GT. These results imply the potential application of GO-coated geotextile for reducing bio-clogging in landfill LCS.
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Affiliation(s)
- Qian Wang
- School of Environment and Energy, Peking University Shenzhen Graduate School, University Town, Xili, Nanshan District, Shenzhen, 518055, China
| | - Jae Hac Ko
- College of Ocean Sciences, Jeju National University, Jeju Special Self-Governing Province, 63243, Republic of Korea
| | - Feng Liu
- School of Environment and Energy, Peking University Shenzhen Graduate School, University Town, Xili, Nanshan District, Shenzhen, 518055, China
| | - Wei Xiong
- School of Advanced Materials, Peking University Shenzhen Graduate School, University Town, Xili, Nanshan District, Shenzhen, 518055, China
| | - Xinwei Wang
- School of Advanced Materials, Peking University Shenzhen Graduate School, University Town, Xili, Nanshan District, Shenzhen, 518055, China
| | - Qiyong Xu
- School of Environment and Energy, Peking University Shenzhen Graduate School, University Town, Xili, Nanshan District, Shenzhen, 518055, China.
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18
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Lee BI, Jang BW, Choi HS, Lee JS, Kim YB. Arthroscopic treatment of Mycobacterium massiliense septic arthritis outbreak after intra-articular injection: A case-series report and literature review. Medicine (Baltimore) 2021; 100:e23839. [PMID: 33592840 PMCID: PMC7870196 DOI: 10.1097/md.0000000000023839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 11/21/2020] [Indexed: 01/05/2023] Open
Abstract
Non-tuberculous mycobacteria (NTM) comprise mycobacteria, with the exceptions of Mycobacterium (M.) leprae and the M. tuberculosis complex. Septic arthritis caused by NTM is so rare that there is no standardized treatment.Between April and September 2012, 27 patients were infected with M. massiliense in a single clinic following injection of steroid in the knee joint. Clinical data of 9 patients who received arthroscopic treatment in Seoul Hospital of Soonchunhyang University were analyzed retrospectively.Arthroscopic irrigation and debridement were performed average 2.6 times (1-3 times). As 6 out of 9 cases (67%) had joint contracture of the knee joint, arthroscopic adhesiolysis, and brisement were performed. After surgical procedures, Hospital for Special Surgery and Lysholm knee score showed improvement compared before the surgery, but a radiographic result evaluated by Kellgren-Lawrence revealed that 6 cases got deteriorated to stage 4 in the 4-year follow-up.NTM septic arthritis had a higher recurrence and a higher contracture incidence than septic arthritis caused by tuberculous mycobacteria or other bacteria. Treatment was possible with repeated arthroscopic debridement and intravenous antibiotics.
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Affiliation(s)
- Byung Ill Lee
- Department of Orthopedic Surgery, Smarton Hospital, Bucheon
| | - Byung-Woong Jang
- Department of Orthopedic Surgery, Soonchunhyang University Hospital Seoul, Seoul, Republic of Korea
| | - Hyung Suk Choi
- Department of Orthopedic Surgery, Soonchunhyang University Hospital Seoul, Seoul, Republic of Korea
| | - Jeong Seok Lee
- Department of Orthopedic Surgery, Soonchunhyang University Hospital Seoul, Seoul, Republic of Korea
| | - Yong Beom Kim
- Department of Orthopedic Surgery, Soonchunhyang University Hospital Seoul, Seoul, Republic of Korea
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19
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Hage M, Khelissa S, Abdallah M, Akoum H, Chihib NE, Jama C. Cold plasma assisted deposition of organosilicon coatings on stainless steel for prevention of adhesion of Salmonella enterica serovar Enteritidis. BIOFOULING 2021; 37:161-173. [PMID: 33645343 DOI: 10.1080/08927014.2021.1877274] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 06/12/2023]
Abstract
The persistence of Salmonella enterica on abiotic surfaces in hospitals and the agri-food industries leads to several infections worldwide. In this context, this work aimed to study the adhesion of S. Enteritidis on plasma-modified stainless steel to prevent biofilm-associated-infections. Surface modification was achieved by the elaboration of organosilicon coatings from the monomer 1,1,3,3-tetramethyldisiloxane, mixed with oxygen, using a flowing nitrogen microwave post-discharge plasma polymerization technique. The effect of cold plasma parameters on the properties of the coatings, the coated surface topography and S. Enteritidis cell adhesion was studied. The results showed that the surface topography influenced the bacterial adhesion rate. Indeed, rough surfaces did not repel S. Enteritidis since the number of attached cells on these coatings was between 30 ± 4 to 65 ± 4 bacteria per microscopic field. Otherwise, smoother surfaces demonstrated an anti-adhesive character since the number of attached cells was almost nil on these coatings.
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Affiliation(s)
- Mayssane Hage
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
- Laboratoire d'analyses chimiques et microbiologiques, Faculté de Santé Publique - Université Libanaise, Saida, Liban
| | - Simon Khelissa
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Marwan Abdallah
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Hikmat Akoum
- Laboratoire d'analyses chimiques et microbiologiques, Faculté de Santé Publique - Université Libanaise, Saida, Liban
| | - Nour-Eddine Chihib
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
| | - Charafeddine Jama
- Univ. Lille, CNRS, INRAE, Centrale Lille, UMR 8207 - UMET - Unité Matériaux et Transformations, Lille, France
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20
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Dassanayake RP, Wherry TLT, Falkenberg SM, Reinhardt TA, Casas E, Stabel JR. Bovine NK-lysin-derived peptides have bactericidal effects against Mycobacterium avium subspecies paratuberculosis. Vet Res 2021; 52:11. [PMID: 33478585 PMCID: PMC7818946 DOI: 10.1186/s13567-021-00893-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/04/2021] [Indexed: 01/11/2023] Open
Abstract
Infection with Mycobacterium avium subspecies paratuberculosis (MAP) is complex, but little is known about the role that natural killer (NK) cells play. In the present study, four bovine NK-lysin peptides were synthesized to evaluate their bactericidal activity against MAP. The results demonstrated that bNK-lysin peptides were directly bactericidal against MAP, with bNK1 and bNK2A being more potent than bNK2B and bNK2C. Mechanistically, transmission electron microscopy revealed that the incubation of MAP with bNK2A resulted in extensive damage to cell membranes and cytosolic content leakage. Furthermore, the addition of bNK2A linked with a cell-penetrating peptide resulted in increased MAP killing in a macrophage model.
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Affiliation(s)
- Rohana P Dassanayake
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, IA, USA.
| | - Taylor L T Wherry
- Department of Veterinary Pathology, College of Veterinary Medicine, Iowa State University, Ames, IA, USA.,Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, IA, USA
| | - Shollie M Falkenberg
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, IA, USA
| | - Timothy A Reinhardt
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, IA, USA
| | - Eduardo Casas
- Ruminant Diseases and Immunology Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, IA, USA
| | - Judith R Stabel
- Infectious Bacterial Diseases Research Unit, National Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Ames, IA, USA.
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21
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Hemmatian T, Lee H, Kim J. Bacteria Adhesion of Textiles Influenced by Wettability and Pore Characteristics of Fibrous Substrates. Polymers (Basel) 2021; 13:E223. [PMID: 33440678 PMCID: PMC7827894 DOI: 10.3390/polym13020223] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/05/2021] [Accepted: 01/08/2021] [Indexed: 11/16/2022] Open
Abstract
Bacteria adhesion on the surface is an initial step to create biofouling, which may lead to a severe infection of living organisms and humans. This study is concerned with investigating the textile properties including wettability, porosity, total pore volume, and pore size in association with bacteria adhesion. As model bacteria, Gram-negative, rod-shaped Escherichia coli and the Gram-positive, spherical-shaped Staphylococcus aureus were used to analyze the adhesion tendency. Electrospun webs made from polystyrene and poly(lactic acid) were used as substrates, with modification of wettability by the plasma process using either O2 or C4F8 gas. The pore and morphological characteristics of fibrous webs were analyzed by the capillary flow porometer and scanning electron microscopy. The substrate's wettability appeared to be the primary factor influencing the cell adhesion, where the hydrophilic surface resulted in considerably higher adhesion. The pore volume and the pore size, rather than the porosity itself, were other important factors affecting the bacteria adherence and retention. In addition, the compact spatial distribution of fibers limited the cell intrusion into the pores, reducing the total amount of adherence. Thus, superhydrophobic textiles with the reduced total pore volume and smaller pore size would circumvent the adhesion. The findings of this study provide informative discussion on the characteristics of fibrous webs affecting the bacteria adhesion, which can be used as a fundamental design guide of anti-biofouling textiles.
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Affiliation(s)
- Tahmineh Hemmatian
- Department of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Korea; (T.H.); (H.L.)
| | - Halim Lee
- Department of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Korea; (T.H.); (H.L.)
| | - Jooyoun Kim
- Department of Textiles, Merchandising and Fashion Design, Seoul National University, Seoul 08826, Korea; (T.H.); (H.L.)
- Research Institute of Human Ecology, Seoul National University, Seoul 08826, Korea
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22
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Microbial carrying capacity and carbon biomass of plastic marine debris. ISME JOURNAL 2020; 15:67-77. [PMID: 32879460 DOI: 10.1038/s41396-020-00756-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 07/01/2020] [Accepted: 08/21/2020] [Indexed: 01/09/2023]
Abstract
Trillions of plastic debris fragments are floating at sea, presenting a substantial surface area for microbial colonization. Numerous cultivation-independent surveys have characterized plastic-associated microbial biofilms, however, quantitative studies addressing microbial carbon biomass are lacking. Our confocal laser scanning microscopy data show that early biofilm development on polyethylene, polypropylene, polystyrene, and glass substrates displayed variable cell size, abundance, and carbon biomass, whereas these parameters stabilized in mature biofilms. Unexpectedly, plastic substrates presented lower volume proportions of photosynthetic cells after 8 weeks, compared to glass. Early biofilms displayed the highest proportions of diatoms, which could influence the vertical transport of plastic debris. In total, conservative estimates suggest 2.1 × 1021 to 3.4 × 1021 cells, corresponding to about 1% of the microbial cells in the ocean surface microlayer (1.5 × 103 to 1.1 × 104 tons of carbon biomass), inhabit plastic debris globally. As an unnatural addition to sea surface waters, the large quantity of cells and biomass carried by plastic debris has the potential to impact biodiversity, autochthonous ecological functions, and biogeochemical cycles within the ocean.
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23
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Carniello V, Peterson BW, van der Mei HC, Busscher HJ. Role of adhesion forces in mechanosensitive channel gating in Staphylococcus aureus adhering to surfaces. NPJ Biofilms Microbiomes 2020; 6:31. [PMID: 32826897 PMCID: PMC7442641 DOI: 10.1038/s41522-020-00141-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/30/2020] [Indexed: 01/18/2023] Open
Abstract
Mechanosensitive channels in bacterial membranes open or close in response to environmental changes to allow transmembrane transport, including antibiotic uptake and solute efflux. In this paper, we hypothesize that gating of mechanosensitive channels is stimulated by forces through which bacteria adhere to surfaces. Hereto, channel gating is related with adhesion forces to different surfaces of a Staphylococcus aureus strain and its isogenic ΔmscL mutant, deficient in MscL (large) channel gating. Staphylococci becoming fluorescent due to uptake of calcein, increased with adhesion force and were higher in the parent strain (66% when adhering with an adhesion force above 4.0 nN) than in the ΔmscL mutant (40% above 1.2 nN). This suggests that MscL channels open at a higher critical adhesion force than at which physically different, MscS (small) channels open and contribute to transmembrane transport. Uptake of the antibiotic dihydrostreptomycin was monitored by staphylococcal killing. The parent strain exposed to dihydrostreptomycin yielded a CFU reduction of 2.3 log-units when adhering with an adhesion force above 3.5 nN, but CFU reduction remained low (1.0 log-unit) in the mutant, independent of adhesion force. This confirms that large channels open at a higher critical adhesion-force than small channels, as also concluded from calcein transmembrane transport. Collectively, these observations support our hypothesis that adhesion forces to surfaces play an important role, next to other established driving forces, in staphylococcal channel gating. This provides an interesting extension of our understanding of transmembrane antibiotic uptake and solute efflux in infectious staphylococcal biofilms in which bacteria experience adhesion forces from a wide variety of surfaces, like those of other bacteria, tissue cells, or implanted biomaterials.
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Affiliation(s)
- Vera Carniello
- Department of BioMedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, Netherlands
| | - Brandon W Peterson
- Department of BioMedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, Netherlands.
| | - Henny C van der Mei
- Department of BioMedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, Netherlands
| | - Henk J Busscher
- Department of BioMedical Engineering, University of Groningen and University Medical Center Groningen, Groningen, Netherlands
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Al-Taie A, Han X, Williams CM, Abdulwhhab M, Abbott AP, Goddard A, Wegrzyn M, Garton NJ, Barer MR, Pan J. 3-D printed polyvinyl alcohol matrix for detection of airborne pathogens in respiratory bacterial infections. Microbiol Res 2020; 241:126587. [PMID: 32927205 DOI: 10.1016/j.micres.2020.126587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 08/09/2020] [Accepted: 08/14/2020] [Indexed: 10/23/2022]
Abstract
Novel sampling matrices were manufactured using 3D printing for the detection of respiratory pathogens in expired air. A specific configuration of the matrices was designed using Computer-Aided Design software. Polyvinyl alcohol (PVA) was printed using fused deposition modelling to create a multilayer matrix to enhance the capture of bacteria. The performance of these matrices was compared with gelatine filters that have been used for this work to date. PVA matrices (60 mm diameter) were contaminated with bacteria either by direct inoculation, or by aerosol exposure using an Omron A3 nebuliser. Rough and smooth morphotypes of Mycobacterium abscessus, M. smegmatis and M. bovis BCG, were used in this study to contaminate the matrices. PVA matrices and gelatine sampling filters were contaminated to compare recovery rates for quantitative analyses. These were dissolved in water, bacteria pelleted and DNA extracted followed by a Mycobacterium-specific quantitative Polymerase Chain Reaction (qPCR).The results showed that 3D printed PVA matrices are very effective to capture the bacteria. 3D printed PVA matrix and gelatine filters yielded results of the same order of magnitude for mycobacterial analyses, however, PVA matrix offers several advantages over the latter material. 3D printed PVA is considered as an economic and time-effective matrix as it is cheaper than gelatine filters. PVA is sufficiently robust to be handled and loaded into the surgical masks for sampling, compared to the brittle gelatine filters that required supportive frames. PVA is a synthetic material and it is suitable for DNA-based analyses, whilst gelatine is derived from animal collagen, and carries a high bacterial DNA background that interferes with the target DNA analysis. Furthermore, PVA dissolves in distilled water without requiring chemicals or enzymes, such as the case for gelatine hydrolysis. To summarise, 3D printed PVA sampling matrix is considered a promising tool used for microbiological diagnostic purposes.
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Affiliation(s)
- Alaa Al-Taie
- School of Engineering, University of Leicester, Leicester, LE1 7RH, UK; Department of Biomedical Engineering, College of Engineering, Al-Nahrain University, Baghdad, Iraq.
| | - Xiaoxiao Han
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, 410082, China
| | | | - Mohamad Abdulwhhab
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
| | - Andrew P Abbott
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH, UK
| | - Alex Goddard
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH, UK
| | - Malgorzata Wegrzyn
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
| | - Natalie J Garton
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
| | - Michael R Barer
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
| | - Jingzhe Pan
- School of Engineering, University of Leicester, Leicester, LE1 7RH, UK
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Expression of a Shiga-Like Toxin during Plastic Colonization by Two Multidrug-Resistant Bacteria, Aeromonas hydrophila RIT668 and Citrobacter freundii RIT669, Isolated from Endangered Turtles ( Clemmys guttata). Microorganisms 2020; 8:microorganisms8081172. [PMID: 32752245 PMCID: PMC7465454 DOI: 10.3390/microorganisms8081172] [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: 06/19/2020] [Revised: 07/23/2020] [Accepted: 07/30/2020] [Indexed: 12/12/2022] Open
Abstract
Aeromonas hydrophila RIT668 and Citrobacter freundii RIT669 were isolated from endangered spotted turtles (Clemmys guttata). Whole-genome sequencing, annotation and phylogenetic analyses of the genomes revealed that the closest relative of RIT668 is A. hydrophila ATCC 7966 and Citrobacter portucalensis A60 for RIT669. Resistome analysis showed that A. hydrophila and C. freundii harbor six and 19 different antibiotic resistance genes, respectively. Both bacteria colonize polyethylene and polypropylene, which are common plastics, found in the environment and are used to fabricate medical devices. The expression of six biofilm-related genes—biofilm peroxide resistance protein (bsmA), biofilm formation regulatory protein subunit R (bssR), biofilm formation regulatory protein subunit S (bssS), biofilm formation regulator (hmsP), toxin-antitoxin biofilm protein (tabA) and transcriptional activator of curli operon (csgD)—and two virulence factors—Vi antigen-related gene (viaB) and Shiga-like toxin (slt-II)—was investigated by RT-PCR. A. hydrophila displayed a > 2-fold increase in slt-II expression in cells adhering to both polymers, C. freundii adhering on polyethylene displayed a > 2-fold, and on polypropylene a > 6-fold upregulation of slt-II. Thus, the two new isolates are potential pathogens owing to their drug resistance, surface colonization and upregulation of a slt-II-type diarrheal toxin on polymer surfaces.
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Viju N, Punitha SMJ, Satheesh S. Antibiofilm activity of symbiotic Bacillus species associated with marine gastropods. ANN MICROBIOL 2020. [DOI: 10.1186/s13213-020-01554-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Abstract
Purpose
Generally, symbiotic marine bacteria are renowned for the synthesis of compounds with bioactive properties, and this has been documented in many previous studies. Therefore, the present study was aimed to isolate novel bacterial symbionts of gastropods that have the ability to synthesize bioactive compounds. These bioactive compounds could be used effectively as antibiofilm agents in order to overcome the problems associated with biofilm.
Methods
The bacteria associated with the surface of marine gastropods were isolated and characterized. Following this, the bacterial metabolites were extracted and their antibiofilm effect was evaluated on biofilm-forming bacteria on artificial substrates. Moreover, the biofilm-forming bacterium Alteromonas sp. was treated with the extracts of symbiotic bacteria in order to evaluate the influence of extracts over the synthesis of extracellular polymeric substance (EPS). Besides, the biologically active chemical constituents of the extracts were separated using thin-layer chromatography and subjected to gas chromatography and mass spectrometry (GC-MS) analysis for characterization.
Results
Three bacterial strains belonging to the species Bacillus firmus, Bacillus cereus and Bacillus subtilis were identified from the bacterial community associated with the gastropods. The antibiofilm assays revealed that the extract of three symbiotic bacteria significantly (p < 0.05) reduced the biofilm formation by the marine bacterium Alteromonas sp. on artificial materials. Also, the EPS synthesis by Alteromonas sp. was significantly inhibited due to symbiotic bacterial extract treatment. The chemical composition of the bioactive fraction isolated from the symbiotic bacteria extract revealed that most of the detected compounds were belonging to aromatic acid, fatty acid and carboxylic acid.
Conclusion
The results of this study clearly revealed that the bacteria belonging to the above listed Bacillus species can be considered as a promising source of natural antibiofilm agents.
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Boada E, Santos-Clotas E, Bertran S, Cabrera-Codony A, Martín MJ, Bañeras L, Gich F. Potential use of Methylibium sp. as a biodegradation tool in organosilicon and volatile compounds removal for biogas upgrading. CHEMOSPHERE 2020; 240:124908. [PMID: 31726596 DOI: 10.1016/j.chemosphere.2019.124908] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 09/06/2019] [Accepted: 09/18/2019] [Indexed: 06/10/2023]
Abstract
Organosilicon compounds are the most undesirable compounds for the energy recovery of biogas. These compounds are still resistant to biodegradation when biotechnologies are considered for biogas purification. Herein we isolated 52 bacterial species from anaerobic batch enrichment cultures (BEC) saturated with D4 and from an anaerobic lab-scale biotrickling filter (BTF) fed with a gas flow containing D4 as unique carbon source. Among those Methylibium sp. and Pseudomonas aeruginosa showed the highest capacity to remove D4 (53.04% ± 0.03 and 24.42% ± 0.02, respectively). Contrarily, co-culture evaluation treatment for the biodegradation of siloxanes together with volatile organic compounds removed a lower concentration of D4 compared to toluene and limonene, which were completely removed. Remarkably, the siloxane D5 proved to be more biodegradable than D4. Substrates removal values achieved by Methylibium sp. suggested that this bacterial isolate could be used in biological removal technologies of siloxanes.
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Affiliation(s)
- Ellana Boada
- Molecular Microbial Ecology Group (gEMM-IEA), Institute of Aquatic Ecology, Faculty of Sciences, University of Girona, Campus Montilivi, Maria Aurèlia Capmany 40, E-17003, Girona, Catalonia, Spain
| | - Eric Santos-Clotas
- LEQUIA. Institute of Environment. University of Girona, Campus Montilivi, Maria Aurèlia Capmany 69, E-17003, Girona, Catalonia, Spain
| | - Salvador Bertran
- Molecular Microbial Ecology Group (gEMM-IEA), Institute of Aquatic Ecology, Faculty of Sciences, University of Girona, Campus Montilivi, Maria Aurèlia Capmany 40, E-17003, Girona, Catalonia, Spain
| | - Alba Cabrera-Codony
- LEQUIA. Institute of Environment. University of Girona, Campus Montilivi, Maria Aurèlia Capmany 69, E-17003, Girona, Catalonia, Spain
| | - Maria J Martín
- LEQUIA. Institute of Environment. University of Girona, Campus Montilivi, Maria Aurèlia Capmany 69, E-17003, Girona, Catalonia, Spain
| | - Lluís Bañeras
- Molecular Microbial Ecology Group (gEMM-IEA), Institute of Aquatic Ecology, Faculty of Sciences, University of Girona, Campus Montilivi, Maria Aurèlia Capmany 40, E-17003, Girona, Catalonia, Spain
| | - Frederic Gich
- Molecular Microbial Ecology Group (gEMM-IEA), Institute of Aquatic Ecology, Faculty of Sciences, University of Girona, Campus Montilivi, Maria Aurèlia Capmany 40, E-17003, Girona, Catalonia, Spain.
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Revisiting John Snow to Meet the Challenge of Nontuberculous Mycobacterial Lung Disease. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16214250. [PMID: 31683836 PMCID: PMC6862550 DOI: 10.3390/ijerph16214250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 01/09/2023]
Abstract
Nontuberculous mycobacteria (NTM) are ubiquitous components of the soil and surface water microbiome. Disparities by sex, age, and geography demonstrate that both host and environmental factors are key determinants of NTM disease in populations, which predominates in the form of chronic pulmonary disease. As the incidence of NTM pulmonary disease rises across the United States, it becomes increasingly evident that addressing this emerging human health issue requires a bold, multi-disciplinary research framework that incorporates host risk factors for NTM pulmonary disease alongside the determinants of NTM residence in the environment. Such a framework should include the assessment of environmental characteristics promoting NTM growth in soil and surface water, detailed evaluations of water distribution systems, direct sampling of water sources for NTM contamination and species diversity, and studies of host and bacterial factors involved in NTM pathogenesis. This comprehensive approach can identify intervention points to interrupt the transmission of pathogenic NTM species from the environment to the susceptible host and to reduce NTM pulmonary disease incidence.
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Taunk A, Chen R, Iskander G, Ho KKK, Almohaywi B, Black DS, Willcox MDP, Kumar N. The Role of Orientation of Surface Bound Dihydropyrrol-2-ones (DHP) on Biological Activity. Molecules 2019; 24:E2676. [PMID: 31340597 PMCID: PMC6680537 DOI: 10.3390/molecules24142676] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/10/2019] [Accepted: 07/10/2019] [Indexed: 11/16/2022] Open
Abstract
Quorum sensing (QS) signaling system is important for bacterial growth, adhesion, and biofilm formation resulting in numerous infectious diseases. Dihydropyrrol-2-ones (DHPs) represent a novel class of antimicrobial agents that inhibit QS, and are less prone to develop bacterial resistance due to their non-growth inhibition mechanism of action which does not cause survival pressure on bacteria. DHPs can prevent bacterial colonization and quorum sensing when covalently bound to substrates. In this study, the role of orientation of DHP compounds was investigated after covalent attachment by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC)/N-hydroxysuccinimide (NHS) coupling reaction to amine-functionalized glass surfaces via various positions of the DHP scaffold. The functionalized glass surfaces were characterized by X-ray photoelectron spectroscopy (XPS) and contact angle measurements and tested for their in vitro biological activity against S. aureus and P. aeruginosa. DHPs attached via the N-1 position resulted in the highest antibacterial activities against S. aureus, while no difference was observed for DHPs attached either via the N-1 position or the C-4 phenyl ring against P. aeruginosa.
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Affiliation(s)
- Aditi Taunk
- School of Chemistry, University of New South Wales, Sydney 2052, Australia
| | - Renxun Chen
- School of Chemistry, University of New South Wales, Sydney 2052, Australia
| | - George Iskander
- School of Chemistry, University of New South Wales, Sydney 2052, Australia
| | - Kitty K K Ho
- School of Chemistry, University of New South Wales, Sydney 2052, Australia
| | - Basmah Almohaywi
- School of Chemistry, University of New South Wales, Sydney 2052, Australia
| | | | - Mark D P Willcox
- School of Optometry and Vision Science, University of New South Wales, Sydney 2052, Australia
| | - Naresh Kumar
- School of Chemistry, University of New South Wales, Sydney 2052, Australia.
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Gazula H, Quansah J, Allen R, Scherm H, Li C, Takeda F, Chen J. Microbial loads on selected fresh blueberry packing lines. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.01.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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31
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Solyanikova IP, Golovleva LA. Hexadecane and Hexadecane-Degrading Bacteria: Mechanisms of Interaction. Microbiology (Reading) 2019. [DOI: 10.1134/s0026261718060152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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32
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Lopeman RC, Harrison J, Desai M, Cox JAG. Mycobacterium abscessus: Environmental Bacterium Turned Clinical Nightmare. Microorganisms 2019; 7:microorganisms7030090. [PMID: 30909391 PMCID: PMC6463083 DOI: 10.3390/microorganisms7030090] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 12/19/2022] Open
Abstract
Mycobacteria are a large family of over 100 species, most of which do not cause diseases in humans. The majority of the mycobacterial species are referred to as nontuberculous mycobacteria (NTM), meaning they are not the causative agent of tuberculous (TB) or leprosy, i.e., Mycobacterium tuberculous complex and Mycobacterium leprae, respectively. The latter group is undoubtedly the most infamous, with TB infecting an estimated 10 million people and causing over 1.2 million deaths in 2017 alone TB and leprosy also differ from NTM in that they are only transmitted from person to person and have no environmental reservoir, whereas NTM infections are commonly acquired from the environment. It took until the 1950′s for NTM to be recognised as a potential lung pathogen in people with underlying pulmonary disease and another three decades for NTM to be widely regarded by the medical community when Mycobacterium avium complex was identified as the most common group of opportunistic pathogens in AIDS patients. This review focuses on an emerging NTM called Mycobacterium abscessus (M. abs). M. abs is a rapidly growing NTM that is responsible for opportunistic pulmonary infections in patients with structural lung disorders such as cystic fibrosis and bronchiectasis, as well as a wide range of skin and soft tissue infections in humans. In this review, we discuss how we came to understand the pathogen, how it is currently treated and examine drug resistance mechanisms and novel treatments currently in development. We highlight the urgent need for new and effective treatments for M. abs infection as well as improved in vivo methods of efficacy testing.
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Affiliation(s)
- Rose C Lopeman
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK.
| | - James Harrison
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK.
| | - Maya Desai
- Birmingham Children's Hospital, Birmingham Women's and Children's NHS Foundation Trust, Steelhouse Lane, Birmingham B4 6NH, UK.
| | - Jonathan A G Cox
- School of Life and Health Sciences, Aston University, Aston Triangle, Birmingham B4 7ET, UK.
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Abstract
The review is devoted to biocatalysts based on actinobacteria of the genus Rhodococcus, which are promising for environmental biotechnologies. In the review, biotechnological advantages of Rhodococcus bacteria are evaluated, approaches used to develop robust and efficient biocatalysts are discussed, and their relevant applications are given. We focus on Rhodococcus cell immobilization in detail (methods of immobilization, criteria for strains and carriers, and optimization of process parameters) as the most efficient approach for stabilizing biocatalysts. It is shown that advanced Rhodococcus biocatalysts with improved working characteristics, enhanced stress tolerance, high catalytic activities, human and environment friendly, and commercially viable are developed, which are suitable for wastewater treatment, bioremediation, and biofuel production.
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Yoshino T, Miyazaki J, Kojima T, Kandori S, Shiga M, Kawahara T, Kimura T, Naka T, Kiyohara H, Watanabe M, Yamasaki S, Akaza H, Yano I, Nishiyama H. Cationized liposomal keto-mycolic acids isolated from Mycobacterium bovis bacillus Calmette-Guérin induce antitumor immunity in a syngeneic murine bladder cancer model. PLoS One 2019; 14:e0209196. [PMID: 30608942 PMCID: PMC6319727 DOI: 10.1371/journal.pone.0209196] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 11/30/2018] [Indexed: 01/18/2023] Open
Abstract
Intravesical therapy using Mycobacterium bovis bacillus Calmette-Guérin (BCG) is the most established cancer immunotherapy for bladder cancer. However, its underlying mechanisms are unknown. Mycolic acid (MA), the most abundant lipid of the BCG cell wall, is suspected to be one of the essential active components of this immunogenicity. Here, we developed cationic liposomes incorporating three subclasses (α, keto, and methoxy) of MA purified separately from BCG, using the dendron-bearing lipid D22. The cationic liposomes using D22 were efficiently taken up by the murine bladder cancer cell line MB49 in vitro, but the non-cationic liposomes were not. Lip-kMA, a cationic liposome containing keto-MA, presented strong antitumor activity in two murine syngeneic graft models using the murine bladder cancer cell lines MB49 and MBT-2 in comparison to both Lip-aMA and Lip-mMA, which contained α-MA and methoxy-MA, respectively. Interestingly, Lip-kMA(D12), which was made of D12 instead of D22, did not exhibit antitumor activity in the murine syngeneic graft model using MB49 cells, although it was successfully taken up by MB49 cells in vitro. Histologically, compared to the number of infiltrating CD4 lymphocytes, the number of CD8 lymphocytes was higher in the tumors treated with Lip-kMA. Antitumor effects of Lip-kMA were not observed in nude mice, whereas weak but significant effects were observed in beige mice with natural killer activity deficiency. Thus, a cationized liposome containing keto-MA derived from BCG induced in vivo antitumor immunity. These findings will provide new insights into lipid immunogenicity and the underlying mechanisms of BCG immunotherapy.
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Affiliation(s)
- Takayuki Yoshino
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Jun Miyazaki
- Department of Urology, International University of Health and Welfare, Chiba, Japan
- * E-mail:
| | - Takahiro Kojima
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Shuya Kandori
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Masanobu Shiga
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Takashi Kawahara
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Tomokazu Kimura
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Takashi Naka
- Department of Food and Nutrition, Faculty of Contemporary Human Life Science, Tezukayama University, Nara, Japan
| | | | - Miyuki Watanabe
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Division of Molecular Immunology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Sho Yamasaki
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Division of Molecular Immunology, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
- Department of Molecular Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan
- Division of Molecular Immunology, Medical Mycology Research Center, Chiba University, Chiba, Japan
| | - Hideyuki Akaza
- Strategic Investigation on Comprehensive Cancer Network, University of Tokyo, Tokyo, Japan
| | | | - Hiroyuki Nishiyama
- Department of Urology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
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Prabhawathi V, Sivakumar PM, Boobalan T, Manohar CM, Doble M. Design of antimicrobial polycaprolactam nanocomposite by immobilizing subtilisin conjugated Au/Ag core-shell nanoparticles for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 94:656-665. [DOI: 10.1016/j.msec.2018.10.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 09/16/2018] [Accepted: 10/03/2018] [Indexed: 02/03/2023]
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Interaction of Vibrio to Biotic and Abiotic Surfaces: Relationship between Hydrophobicity, Cell Adherence, Biofilm Production, and Cytotoxic Activity. SURFACES 2018. [DOI: 10.3390/surfaces1010014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Vibrio parahaemolyticus and Vibrio alginolyticus are important pathogenic agents for both humans and aquatic animals. Twenty-five bacterial strains were isolated from infected sea bass (Dicentrarchus labrax) on thiosulfate citrate bile salts sucrose (TCBS) agar plates. For the species-specific detection of V. alginolyticus and V. parahaemolyticus, a multiplex PCR assay using two collagenase-targeted primer pairs allows the detection of four strains of V. parahaemolyticus and three strains of V. alginolyticus. The seven identified isolates were partitioned for capsule production, hydrophobicity, adherence, biofilm formation, invasion, and cytotoxicity against Hep-2 cells. Two V. parahaemolyticus (Spa2 and Spa3) and one V. alginolyticus (Va01) were capsule producers developing almost black colonies on CRA, they showed a strong hydrophobicity using bacterial adhesion to hydrocarbons test (BATH), and were able to produce high biofilm. Isolates were able to adhere and invade Hep-2 cells and exhibited dissimilar levels of cytotoxicity in epithelial cells. This study shows the strong relationship between adhesion, biofilm formation, invasion and the cytotoxicity of Vibrio strains. Thus, we found a strong and significant positive correlation between different virulence properties of these isolates. The present study shows that bacterial contact with the cells as well as adhesion and invasion are essential steps to induce cytotoxicity. However, the invasion is seen to be a post adherence event.
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Seifan M, Berenjian A. Application of microbially induced calcium carbonate precipitation in designing bio self-healing concrete. World J Microbiol Biotechnol 2018; 34:168. [PMID: 30387067 DOI: 10.1007/s11274-018-2552-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/29/2018] [Indexed: 12/25/2022]
Abstract
Concrete is one of the most broadly used construction materials in the world due to its number of performance characteristics. Despite the long life of concrete structure under ideal conditions, it tends to crack and this phenomenon results in a considerable reduction in service life and performance. Evidence of microbial involvement in the precipitation of minerals has led to a massive investigation on adapting this technology for addressing the concrete cracking issue. Calcium carbonate is one of most compatible materials with the concrete constituents and it can be induced via biological process. In this review paper, the effects of different factors, such as nucleation site, pH, nutrient and temperature, on the biosynthesis of calcium carbonate are elucidated. Moreover, the influences of effective factors on calcium carbonate polymorphism are extensively elaborated. Finally, the limitations for the future application of this innovative technology in construction industry are highlighted.
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Affiliation(s)
- Mostafa Seifan
- School of Engineering, Faculty of Science and Engineering, The University of Waikato, Hamilton, New Zealand
| | - Aydin Berenjian
- School of Engineering, Faculty of Science and Engineering, The University of Waikato, Hamilton, New Zealand.
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Taravaud A, Ali M, Lafosse B, Nicolas V, Féliers C, Thibert S, Lévi Y, Loiseau PM, Pomel S. Enrichment of free-living amoebae in biofilms developed at upper water levels in drinking water storage towers: An inter- and intra-seasonal study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 633:157-166. [PMID: 29573682 DOI: 10.1016/j.scitotenv.2018.03.178] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/16/2018] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
Free-living amoebae (FLA) are ubiquitous organisms present in various natural and artificial environments, such as drinking water storage towers (DWST). Some FLA, such as Acanthamoeba sp., Naegleria fowleri, and Balamuthia mandrillaris, can cause severe infections at ocular or cerebral level in addition to being potential reservoirs of other pathogens. In this work, the abundance and diversity of FLA was evaluated in two sampling campaigns: one performed over five seasons in three DWST at three different levels (surface, middle and bottom) in water and biofilm using microscopy and PCR, and one based on the kinetics analysis in phase contrast and confocal microscopy of biofilm samples collected every two weeks during a 3-month period at the surface and at the bottom of a DWST. In the seasonal study, the FLA were detected in each DWST water in densities of ~20 to 25amoebaeL-1. A seasonal variation of amoeba distribution was observed in water samples, with maximal densities in summer at ~30amoebaeL-1 and minimal densities in winter at ~16amoebaeL-1. The FLA belonging to the genus Acanthamoeba were detected in two spring sampling campaigns, suggesting a possible seasonal appearance of this potentially pathogenic amoeba. Interestingly, a 1 log increase of amoebae density was observed in biofilm samples collected at the surface of all DWST compared to the middle and the bottom where FLA were at 0.1-0.2amoebae/cm2. In the kinetics study, an increase of amoebae density, total cell density, and biofilm thickness was observed as a function of time at the surface of the DWST, but not at the bottom. To our knowledge, this study describes for the first time a marked higher FLA density in biofilms collected at upper water levels in DWST, constituting a potential source of pathogenic micro-organisms.
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Affiliation(s)
- Alexandre Taravaud
- Chimiothérapie Antiparasitaire, UMR CNRS 8076, BioCIS, Université Paris-Sud, Université Paris-Saclay, 5 rue Jean-Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Myriam Ali
- Chimiothérapie Antiparasitaire, UMR CNRS 8076, BioCIS, Université Paris-Sud, Université Paris-Saclay, 5 rue Jean-Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Bernard Lafosse
- Véolia Eau-Compagnie Générale des Eaux, 2 avenue Guynemer, 94600 Choisy-Le-Roi, France
| | - Valérie Nicolas
- UMS IPSIT, Plate-Forme D'imagerie Cellulaire, Université Paris-Sud, Université Paris-Saclay, 92290 Châtenay-Malabry, France
| | - Cédric Féliers
- Véolia Eau d'Île de France, Le Vermont, 28 boulevard de Pesaro, 92751 Nanterre, France
| | - Sylvie Thibert
- Syndicat des Eaux d'Île de France, 120 boulevard Saint-Germain, 75006 Paris, France
| | - Yves Lévi
- Groupe Santé Publique et Environnement, UMR CNRS 8079 Ecologie Systématique Evolution, Université Paris-Sud, AgroParisTech, Université Paris-Saclay, 5 rue Jean-Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Philippe M Loiseau
- Chimiothérapie Antiparasitaire, UMR CNRS 8076, BioCIS, Université Paris-Sud, Université Paris-Saclay, 5 rue Jean-Baptiste Clément, 92290 Châtenay-Malabry, France
| | - Sébastien Pomel
- Chimiothérapie Antiparasitaire, UMR CNRS 8076, BioCIS, Université Paris-Sud, Université Paris-Saclay, 5 rue Jean-Baptiste Clément, 92290 Châtenay-Malabry, France.
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van der Westen R, Sjollema J, Molenaar R, Sharma PK, van der Mei HC, Busscher HJ. Floating and Tether-Coupled Adhesion of Bacteria to Hydrophobic and Hydrophilic Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4937-4944. [PMID: 29649869 PMCID: PMC5942874 DOI: 10.1021/acs.langmuir.7b04331] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 03/20/2018] [Indexed: 06/08/2023]
Abstract
Models for bacterial adhesion to substratum surfaces all include uncertainty with respect to the (ir)reversibility of adhesion. In a model, based on vibrations exhibited by adhering bacteria parallel to a surface, adhesion was described as a result of reversible binding of multiple bacterial tethers that detach from and successively reattach to a surface, eventually making bacterial adhesion irreversible. Here, we use total internal reflection microscopy to determine whether adhering bacteria also exhibit variations over time in their perpendicular distance above surfaces. Streptococci with fibrillar surface tethers showed perpendicular vibrations with amplitudes of around 5 nm, regardless of surface hydrophobicity. Adhering, nonfibrillated streptococci vibrated with amplitudes around 20 nm above a hydrophobic surface. Amplitudes did not depend on ionic strength for either strain. Calculations of bacterial energies from their distances above the surfaces using the Boltzman equation showed that bacteria with fibrillar tethers vibrated as a harmonic oscillator. The energy of bacteria without fibrillar tethers varied with distance in a comparable fashion as the DLVO (Derjaguin, Landau, Verwey, and Overbeek)-interaction energy. Distance variations above the surface over time of bacteria with fibrillar tethers are suggested to be governed by the harmonic oscillations, allowed by elasticity of the tethers, piercing through the potential energy barrier. Bacteria without fibrillar tethers "float" above a surface in the secondary energy minimum, with their perpendicular displacement restricted by their thermal energy and the width of the secondary minimum. The distinction between "tether-coupled" and "floating" adhesion is new, and may have implications for bacterial detachment strategies.
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Affiliation(s)
- Rebecca van der Westen
- University
of Groningen, University Medical Center
Groningen, Department of Biomedical Engineering, Antonius Deusinglaan-1, 9713AV Groningen, The Netherlands
| | - Jelmer Sjollema
- University
of Groningen, University Medical Center
Groningen, Department of Biomedical Engineering, Antonius Deusinglaan-1, 9713AV Groningen, The Netherlands
| | - Robert Molenaar
- Nanobiophysics
group, Department of Science and Technology, University of Twente, P.O box 217, 7500AE Enschede, The Netherlands
| | - Prashant K. Sharma
- University
of Groningen, University Medical Center
Groningen, Department of Biomedical Engineering, Antonius Deusinglaan-1, 9713AV Groningen, The Netherlands
| | - Henny C. van der Mei
- University
of Groningen, University Medical Center
Groningen, Department of Biomedical Engineering, Antonius Deusinglaan-1, 9713AV Groningen, The Netherlands
| | - Henk J. Busscher
- University
of Groningen, University Medical Center
Groningen, Department of Biomedical Engineering, Antonius Deusinglaan-1, 9713AV Groningen, The Netherlands
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Gafri HFS, Mohamed Zuki F, Aroua MK, Hashim NA. Mechanism of bacterial adhesion on ultrafiltration membrane modified by natural antimicrobial polymers (chitosan) and combination with activated carbon (PAC). REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abstract
Bacterial adhesion to surfaces is related to several factors, such as surface charge, surface energy, and substrate characteristics (leading to the formation of biofilms). Organisms are dominant in most environmental, industrial, and medical problems and processes that are of interest to microbiologists. Biofilm cells are at least 500 times more resistant to antibacterial agents compared to planktonic cells. The usage of ultrafiltration membranes is fast becoming popular for water treatment. Membrane lifetime and permeate flux are primarily affected by the phenomena of microbial accumulation and fouling at the membrane’s surface. This review intends to understand the mechanism of membrane fouling by bacterial attachment on polymeric ultrafiltration membrane modified by natural antimicrobial polymers (chitosan) combined with powder activated carbon. Also, to guide future research on membrane water treatment processes, adhesion prediction using the extended Derjaguin-Landau-Verwey-Overbeek theory is discussed.
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Affiliation(s)
- Hasan Fouzi S. Gafri
- Department of Chemical Engineering , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Fathiah Mohamed Zuki
- Department of Chemical Engineering , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Mohamed Kheireddine Aroua
- Centre for Carbon Dioxide Capture and Utilization (CCDCU), School of Science and Technology , Sunway University, Bandar Sunway , 47500 Petaling Jaya , Malaysia
- Department of Engineering , Lancaster University , Lancaster, LA1 4YW , UK
| | - Nur Awanis Hashim
- Department of Chemical Engineering , University of Malaya , 50603 Kuala Lumpur , Malaysia
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Sukackiene D, Rimsevicius L, Kiveryte S, Marcinkeviciene K, Bratchikov M, Zokaityte D, Tyla R, Laucyte-Cibulskiene A, Miglinas M. A case of successfully treated relapsing peritoneal dialysis-associated peritonitis caused by Gordonia bronchialis in a farmer. Nephrol Ther 2018; 14:109-111. [DOI: 10.1016/j.nephro.2017.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 09/22/2017] [Accepted: 09/23/2017] [Indexed: 11/30/2022]
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Oligo(cis-1,4-isoprene) aldehyde-oxidizing dehydrogenases of the rubber-degrading bacterium Gordonia polyisoprenivorans VH2. Appl Microbiol Biotechnol 2017; 101:7945-7960. [PMID: 28956111 DOI: 10.1007/s00253-017-8508-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/16/2017] [Accepted: 09/01/2017] [Indexed: 12/23/2022]
Abstract
The actinomycete Gordonia polyisoprenivorans strain VH2 is well-known for its ability to efficiently degrade and catabolize natural rubber [poly(cis-1,4-isoprene)]. Recently, a pathway for the catabolism of rubber by strain VH2 was postulated based on genomic data and the analysis of mutants (Hiessl et al. in Appl Environ Microbiol 78:2874-2887, 2012). To further elucidate the degradation pathway of poly(cis-1,4-isoprene), 2-dimensional-polyacrylamide gel electrophoresis was performed. The analysis of the identified protein spots by matrix-assisted laser desorption/ionization-time of flight tandem mass spectrometry confirmed the postulated intracellular pathway suggesting a degradation of rubber via β-oxidation. In addition, other valuable information on rubber catabolism of G. polyisoprenivorans strain VH2 (e.g. oxidative stress response) was provided. Identified proteins, which were more abundant in cells grown with rubber than in cells grown with propionate, implied a putative long-chain acyl-CoA-dehydrogenase, a 3-ketoacyl-CoA-thiolase, and an aldehyde dehydrogenase. The amino acid sequence of the latter showed a high similarity towards geranial dehydrogenases. The expression of the corresponding gene was upregulated > 10-fold under poly(cis-1,4-isoprene)-degrading conditions. The putative geranial dehydrogenase and a homolog were purified and used for enzyme assays. Deletion mutants for five aldehyde dehydrogenases were generated, and growth with poly(cis-1,4-isoprene) was investigated. While none of the mutants had an altered phenotype regarding growth with poly(cis-1,4-isoprene) as sole carbon and energy source, purified aldehyde dehydrogenases were able to catalyze the oxidation of oligoisoprene aldehydes indicating an involvement in rubber degradation.
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Keeratipibul S, Laovittayanurak T, Pornruangsarp O, Chaturongkasumrit Y, Takahashi H, Techaruvichit P. Effect of swabbing techniques on the efficiency of bacterial recovery from food contact surfaces. Food Control 2017. [DOI: 10.1016/j.foodcont.2017.02.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tuning and elucidation of the colony dimorphism in Rhodococcus ruber associated with cell flocculation in large scale fermentation. Appl Microbiol Biotechnol 2017; 101:6321-6332. [DOI: 10.1007/s00253-017-8319-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 03/29/2017] [Accepted: 04/29/2017] [Indexed: 11/25/2022]
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de Carvalho CCCR, Fischer MA, Kirsten S, Würz B, Wick LY, Heipieper HJ. Adaptive response of Rhodococcus opacus PWD4 to salt and phenolic stress on the level of mycolic acids. AMB Express 2016; 6:66. [PMID: 27620730 PMCID: PMC5016484 DOI: 10.1186/s13568-016-0241-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/02/2016] [Indexed: 11/30/2022] Open
Abstract
Mycolata form a group of Gram-positive bacteria with unique cell envelope structures that are known for their high tolerance against antibiotics and both aromatic and aliphatic hydrocarbons. An important part of the unique surface structure of the mycolata is the presence of long chain α-alkyl-β-hydroxy fatty acids, the mycolic acids. In order to investigate the adaptive changes in the mycolic acid composition, we investigated the composition of mycolic acids during the response both to osmotic stress caused by NaCl and to 4-chlorophenol in Rhodococcus opacus PWD4. This bacterium was chosen as it is known to adapt to different kinds of stresses. In addition, it is a potential biocatalyst in bioremediation as well as for biotechnological applications. In the present study, cells of R. opacus PWD4, grown in liquid cultures, responded to toxic concentrations of NaCl by increasing the ratio between mycolic acids and membrane phospholipid fatty acids (MA/PLFA-ratio). Cells reacted to both NaCl and 4-chlorophenol by decreasing both the average chain length and the unsaturation index of their mycolic acids. These changes in mycolic acid composition correlated with increases in cell surface hydrophobicity and saturation of membrane fatty acids, demonstrating the relation between mycolic acid and phospholipid synthesis and their contribution to cell surface properties of R. opacus PWD4.
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Pal R, Hameed S, Sharma S, Fatima Z. Influence of iron deprivation on virulence traits of mycobacteria. Braz J Infect Dis 2016; 20:585-591. [PMID: 27755980 PMCID: PMC9427566 DOI: 10.1016/j.bjid.2016.08.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 08/11/2016] [Accepted: 08/30/2016] [Indexed: 01/17/2023] Open
Abstract
Novel strategies to combat the ever increasing burden of drug resistance in Mycobacterium tuberculosis (MTB) causing tuberculosis (TB) remains a global concern. The ability of MTB to sense and adapt to restricted iron conditions in the hostile environment is essential for their survival and confers the basis of their success as dreadful pathogen. The striking and clinically relevant virulence trait of MTB is its ability to form biofilms and adhere to the host cells. The present study elucidated the effect of iron deprivation on biofilm formation and cell adherence of Mycobacterium smegmatis, a non-pathogenic surrogate of MTB. Firstly, we showed that iron deprivation leads to enhanced cell sedimentation rate and altered colony morphology depicting alterations in cell surface envelope properties. We explored that biofilm formation and cell adherence to polystyrene surface as well as human oral epithelial cells were considerably reduced under iron deprivation both in presence of 2,2 BP (iron chelator) and siderophore mutant Δ011-14 strain. We further investigated that the potency of three first line anti-TB drugs (Isoniazid, Ethambutol, Rifampicin) to inhibit both biofilm formation and cell adhesion were enhanced under iron deprivation in contrast to the drugs when tested alone. Taken together, by virtue of the indispensability of iron for functional virulence traits in mycobacteria, iron deprivation strategies could be further exploited against this notorious human pathogen to explore novel drug targets.
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Affiliation(s)
- Rahul Pal
- Amity University Haryana, Amity Institute of Biotechnology, Gurgaon, India
| | - Saif Hameed
- Amity University Haryana, Amity Institute of Biotechnology, Gurgaon, India
| | - Sharda Sharma
- Amity University Haryana, Amity Institute of Biotechnology, Gurgaon, India
| | - Zeeshan Fatima
- Amity University Haryana, Amity Institute of Biotechnology, Gurgaon, India.
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47
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Using microchannels to visually investigate the formation and dissolution of acrylonitrile droplets in a bio-hydration system. Chem Eng Sci 2016. [DOI: 10.1016/j.ces.2016.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Induced calcium carbonate precipitation using Bacillus species. Appl Microbiol Biotechnol 2016; 100:9895-9906. [PMID: 27392449 DOI: 10.1007/s00253-016-7701-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/15/2016] [Accepted: 06/19/2016] [Indexed: 10/21/2022]
Abstract
Microbially induced calcium carbonate precipitation is an emerging process for the production of self-healing concrete. This study was aimed to investigate the effects and optimum conditions on calcium carbonate biosynthesis. Bacillus licheniformis, Bacillus sphaericus, yeast extract, urea, calcium chloride and aeration were found to be the most significant factors affecting the biomineralization of calcium carbonate. It was noticed that the morphology of microbial calcium carbonate was mainly affected by the genera of bacteria (cell surface properties), the viscosity of the media and the type of electron acceptors (Ca2+). The maximum calcium carbonate concentration of 33.78 g/L was achieved at the optimum conditions This value is the highest concentration reported in the literature.
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Isolation of Nontuberculous Mycobacteria from the Environment of Ghanian Communities Where Buruli Ulcer Is Endemic. Appl Environ Microbiol 2016; 82:4320-4329. [PMID: 27208141 DOI: 10.1128/aem.01002-16] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 05/04/2016] [Indexed: 12/31/2022] Open
Abstract
UNLABELLED This study aimed to isolate nontuberculous mycobacterial species from environmental samples obtained from some selected communities in Ghana. To optimize decontamination, spiked environmental samples were used to evaluate four decontamination solutions and supplemented media, after which the best decontamination solution and media were used for the actual analysis. The isolates obtained were identified on the basis of specific genetic sequences, including heat shock protein 65, IS2404, IS2606, rpoB, and the ketoreductase gene, as needed. Among the methods evaluated, decontamination with 1 M NaOH followed by 5% oxalic acid gave the highest rate of recovery of mycobacteria (50.0%) and the lowest rate of contamination (15.6%). The cultivation medium that supported the highest rate of recovery of mycobacteria was polymyxin B-amphotericin B-nalidixic acid-trimethoprim-azlocillin-supplemented medium (34.4%), followed by isoniazid-supplemented medium (28.1%). Among the 139 samples cultivated in the main analysis, 58 (41.7%) yielded mycobacterial growth, 70 (50.4%) had no growth, and 11 (7.9%) had all inoculated tubes contaminated. A total of 25 different mycobacterial species were identified. Fifteen species (60%) were slowly growing (e.g., Mycobacterium ulcerans, Mycobacterium avium, Mycobacterium mantenii, and Mycobacterium malmoense), and 10 (40%) were rapidly growing (e.g., Mycobacterium chelonae, Mycobacterium fortuitum, and Mycobacterium abscessus). The occurrence of mycobacterial species in the various environmental samples analyzed was as follows: soil, 16 species (43.2%); vegetation, 14 species (38.0%); water, 3 species (8.0%); moss, 2 species (5.4%); snail, 1 species (2.7%); fungi, 1 species (2.7%). This study is the first to report on the isolation of M. ulcerans and other medically relevant nontuberculous mycobacteria from different environmental sources in Ghana. IMPORTANCE Diseases caused by mycobacterial species other than those that cause tuberculosis and leprosy are increasing. Control is difficult because the current understanding of how the organisms are spread and where they live in the environment is limited, although this information is needed to design preventive measures. Growing these organisms from the environment is also difficult, because the culture medium becomes overgrown with other bacteria that also live in the environment, such as in soil and water. We aimed to improve the methods for growing these organisms from environmental sources, such as soil and water samples, for better understanding of important mycobacterial ecology.
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50
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Nauendorf A, Krause S, Bigalke NK, Gorb EV, Gorb SN, Haeckel M, Wahl M, Treude T. Microbial colonization and degradation of polyethylene and biodegradable plastic bags in temperate fine-grained organic-rich marine sediments. MARINE POLLUTION BULLETIN 2016; 103:168-178. [PMID: 26790603 DOI: 10.1016/j.marpolbul.2015.12.024] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/11/2015] [Accepted: 12/17/2015] [Indexed: 05/16/2023]
Abstract
To date, the longevity of plastic litter at the sea floor is poorly constrained. The present study compares colonization and biodegradation of plastic bags by aerobic and anaerobic benthic microbes in temperate fine-grained organic-rich marine sediments. Samples of polyethylene and biodegradable plastic carrier bags were incubated in natural oxic and anoxic sediments from Eckernförde Bay (Western Baltic Sea) for 98 days. Analyses included (1) microbial colonization rates on the bags, (2) examination of the surface structure, wettability, and chemistry, and (3) mass loss of the samples during incubation. On average, biodegradable plastic bags were colonized five times higher by aerobic and eight times higher by anaerobic microbes than polyethylene bags. Both types of bags showed no sign of biodegradation during this study. Therefore, marine sediment in temperate coastal zones may represent a long-term sink for plastic litter and also supposedly compostable material.
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Affiliation(s)
- Alice Nauendorf
- Department of Marine Biogeochemistry, Helmholtz Centre for Ocean Research Kiel (GEOMAR), 24148 Kiel, Germany.
| | - Stefan Krause
- Department of Marine Biogeochemistry, Helmholtz Centre for Ocean Research Kiel (GEOMAR), 24148 Kiel, Germany
| | - Nikolaus K Bigalke
- Department of Marine Biogeochemistry, Helmholtz Centre for Ocean Research Kiel (GEOMAR), 24148 Kiel, Germany
| | - Elena V Gorb
- Department of Functional Morphology and Biomechanics, Zoological Institute, Kiel University, 24098 Kiel, Germany
| | - Stanislav N Gorb
- Department of Functional Morphology and Biomechanics, Zoological Institute, Kiel University, 24098 Kiel, Germany
| | - Matthias Haeckel
- Department of Marine Biogeochemistry, Helmholtz Centre for Ocean Research Kiel (GEOMAR), 24148 Kiel, Germany
| | - Martin Wahl
- Department of Benthic Ecology, Helmholtz Centre for Ocean Research Kiel (GEOMAR), 24148 Kiel, Germany
| | - Tina Treude
- Department of Marine Biogeochemistry, Helmholtz Centre for Ocean Research Kiel (GEOMAR), 24148 Kiel, Germany.
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