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Yang S, Baeg E, Kim K, Kim D, Xu D, Ahn JH, Yang S. Neurodiagnostic and neurotherapeutic potential of graphene nanomaterials. Biosens Bioelectron 2024; 247:115906. [PMID: 38101185 DOI: 10.1016/j.bios.2023.115906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 11/06/2023] [Accepted: 11/30/2023] [Indexed: 12/17/2023]
Abstract
Graphene has emerged as a highly promising nanomaterial for a variety of advanced technologies, including batteries, energy, electronics, and biotechnologies. Its recent contribution to neurotechnology is particularly noteworthy because its superior conductivity, chemical resilience, biocompatibility, thermal stability, and scalable nature make it well-suited for measuring brain activity and plasticity in health and disease. Graphene-mediated compounds are microfabricated in two central methods: chemical processes with natural graphite and chemical vapor deposition of graphene in a film form. They are widely used as biosensors and bioelectronics for neurodiagnostic and neurotherapeutic purposes in several brain disorders, such as Parkinson's disease, stroke, glioma, epilepsy, tinnitus, and Alzheimer's disease. This review provides an overview of studies that have demonstrated the technical advances of graphene nanomaterials in neuroscientific and clinical applications. We also discuss current limitations and future demands in relation to the clinical application of graphene, highlighting its potential technological and clinical significance for treating brain disorders. Our review underscores the potential of graphene nanomaterials as powerful tools for advancing the understanding of the brain and developing new therapeutic strategies.
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Affiliation(s)
- Sunggu Yang
- Department of Nano-bioengineering, Incheon National University, Incheon, 22012, Republic of Korea; Center for Brain-Machine Interface, Incheon National University, Incheon, 22012, Republic of Korea; gBrain Inc., Incheon, 21984, Republic of Korea.
| | - Eunha Baeg
- Department of Nano-bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Kyungtae Kim
- Department of Nano-bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Donggue Kim
- Department of Nano-bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Duo Xu
- School of Electrical & Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Jong-Hyun Ahn
- School of Electrical & Electronic Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
| | - Sungchil Yang
- Department of Neuroscience, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong.
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2
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Deb M, Redkar N, Manohar CS, Jagtap AS, Saxena S, Shukla S. Bacillussp. based nano-bio hybrids for efficient water remediation. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 326:121490. [PMID: 36965681 DOI: 10.1016/j.envpol.2023.121490] [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: 11/03/2022] [Revised: 02/26/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
Macroalgae are a diverse group of primary producers that offer indispensable ecosystem services towards bacterial colonization and proliferation in aquatic biomes. Macroalgae/bacteria interactions are complex in natural biomes and contribute mutually to their growth and biotechnological outcomes. Most findings on macroalgae-associated bacteria and their secreted enzymes have largely been limited to nutraceutical applications. Here, in this study, we demonstrate and investigate the growth of Bacillus sp. (macroalgae-associated bacteria) with the substitution of its associated macroalgae (Gracilaria corticata) on graphene oxide (GO). The findings indicated that the presence of wrinkles of GO nanosheets resulted in cell proliferation and adherence without causing mechanical damage to the cell membrane. Furthermore, the assembly of GO-marine bacteria was explored for organic pollutant treatment using methylene blue (MB) as a model dye. The degradation results suggest the breakdown of MB into non-toxic byproducts as suggested by the phytotoxicity assay.
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Affiliation(s)
- Madhurima Deb
- Nanostructures Engineering and Modeling Laboratory, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai, 400076, India; Centre for Research in Nano Technology and Science, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Neha Redkar
- Nanostructures Engineering and Modeling Laboratory, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Cathrine Sumathi Manohar
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India
| | - Ashok Shivaji Jagtap
- Biological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403004, India
| | - Sumit Saxena
- Nanostructures Engineering and Modeling Laboratory, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai, 400076, India; Water Innovation Centre: Technology, Research & Education (WICTRE), Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Shobha Shukla
- Nanostructures Engineering and Modeling Laboratory, Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai, 400076, India; Water Innovation Centre: Technology, Research & Education (WICTRE), Indian Institute of Technology Bombay, Mumbai, 400076, India.
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3
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Yadav S, Singh Raman AP, Meena H, Goswami AG, Bhawna, Kumar V, Jain P, Kumar G, Sagar M, Rana DK, Bahadur I, Singh P. An Update on Graphene Oxide: Applications and Toxicity. ACS OMEGA 2022; 7:35387-35445. [PMID: 36249372 PMCID: PMC9558614 DOI: 10.1021/acsomega.2c03171] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/30/2022] [Indexed: 08/24/2023]
Abstract
Graphene oxide (GO) has attracted much attention in the past few years because of its interesting and promising electrical, thermal, mechanical, and structural properties. These properties can be altered, as GO can be readily functionalized. Brodie synthesized the GO in 1859 by reacting graphite with KClO3 in the presence of fuming HNO3; the reaction took 3-4 days to complete at 333 K. Since then, various schemes have been developed to reduce the reaction time, increase the yield, and minimize the release of toxic byproducts (NO2 and N2O4). The modified Hummers method has been widely accepted to produce GO in bulk. Due to its versatile characteristics, GO has a wide range of applications in different fields like tissue engineering, photocatalysis, catalysis, and biomedical applications. Its porous structure is considered appropriate for tissue and organ regeneration. Various branches of tissue engineering are being extensively explored, such as bone, neural, dentistry, cartilage, and skin tissue engineering. The band gap of GO can be easily tuned, and therefore it has a wide range of photocatalytic applications as well: the degradation of organic contaminants, hydrogen generation, and CO2 reduction, etc. GO could be a potential nanocarrier in drug delivery systems, gene delivery, biological sensing, and antibacterial nanocomposites due to its large surface area and high density, as it is highly functionalized with oxygen-containing functional groups. GO or its composites are found to be toxic to various biological species and as also discussed in this review. It has been observed that superoxide dismutase (SOD) and reactive oxygen species (ROS) levels gradually increase over a period after GO is introduced in the biological systems. Hence, GO at specific concentrations is toxic for various species like earthworms, Chironomus riparius, Zebrafish, etc.
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Affiliation(s)
- Sandeep Yadav
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
| | | | - Harshvardhan Meena
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
- Department
of Chemistry, Sri Venkateswara College, University of Delhi, Delhi, India
- Department
of Chemistry, University of Delhi, Delhi, India
| | - Abhay Giri Goswami
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
| | - Bhawna
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
- Special
Centre for Nanoscience, Jawaharlal Nehru
University, Delhi, India
| | - Vinod Kumar
- Special
Centre for Nanoscience, Jawaharlal Nehru
University, Delhi, India
| | - Pallavi Jain
- Department
of Chemistry, Faculty of Engineering and Technology, SRM Institute of Science and Technology, NCR Campus, Uttar Pradesh, India
| | - Gyanendra Kumar
- Department
of Chemistry, University of Delhi, Delhi, India
- Swami Shraddhanand
College, University of Delhi, Delhi, India
| | - Mansi Sagar
- Department
of Chemistry, University of Delhi, Delhi, India
| | - Devendra Kumar Rana
- Department
of Physics, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
| | - Indra Bahadur
- Department
of Chemistry, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
| | - Prashant Singh
- Department
of Chemistry, Atma Ram Sanatan Dharma College, University of Delhi, Delhi, India
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Bilal M, Rizwan K, Rahdar A, Badran MF, Iqbal HMN. Graphene-based porous nanohybrid architectures for adsorptive and photocatalytic abatement of volatile organic compounds. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119805. [PMID: 35868473 DOI: 10.1016/j.envpol.2022.119805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 07/06/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Volatile organic compounds (VOCs) represent a considerable threat to humans and ecosystems. Strategic remediation techniques for the abatement of VOCs are immensely important and immediately needed. Given a unique set of optical, mechanical, electrical, and thermal characteristics, inimitable surface functionalities, porous structure, and substantial specific surface area, graphene and derived nanohybrid composites have emerged as exciting candidates for abating environmental pollutants through photocatalytic degradation and adsorptive removal. Graphene oxide (GO) and reduced graphene oxide (rGO) containing oxygenated function entities, i.e., carbonyl, hydroxyl, and carboxylic groups, provide anchor and dispersibility of their surface photocatalytic nanoscale particles and adsorptive sites for VOCs. Therefore, it is meaningful to recapitulate current state-of-the-art research advancements in graphene-derived nanostructures as prospective platforms for VOCs degradation. Considering this necessity, this work provides a comprehensive and valuable insight into research progress on applying graphene-based nanohybrid composites for adsorptive and photocatalytic abatement of VOCs in the aqueous media. First, we present a portrayal of graphene-based nanohybrid based on their structural attributes (i.e., pore size, specific surface area, and other surface features to adsorb VOCs) and structure-assisted performance for VOCs abatement by graphene-based nanocomposites. The adsorptive and photocatalytic potentialities of graphene-based nanohybrids for VOCs are discussed with suitable examples. In addition to regeneration, reusability, and environmental toxicity aspects, the challenges and possible future directions of graphene-based nanostructures are also outlined towards the end of the review to promote large-scale applications of this fascinating technology.
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Affiliation(s)
- Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Komal Rizwan
- Department of Chemistry, University of Sahiwal, Sahiwal 57000, Pakistan
| | - Abbas Rahdar
- Department of Physics, University of Zabol, P. O. Box. 98613-35856, Zabol, Iran
| | - Mohamed Fathy Badran
- Mechanical Engineering, Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey, 64849, Mexico.
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Yan H, Li P, Jiang X, Wang X, Hu Y, Zhang Y, Su R, Su W. Preparation of graphene oxide/polydopamine-curcumin composite nanomaterials and its antibacterial effect against Staphylococcus aureus induced by white light. BIOMATERIALS ADVANCES 2022; 139:213040. [PMID: 35914429 DOI: 10.1016/j.bioadv.2022.213040] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 07/05/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
Curcumin (Cur) plays a key role in photodynamic antibacterial activity as a photosensitizer. On the other hand, the antimicrobial potential of graphene oxide (GO) has been reported controversially, and how to improve its antimicrobial ability has become an meaningful study. In this study, we prepared polydopamine-curcumin (PDA-Cur) by pi-pi stacking and loaded it onto the GO surface to obtain GO/PDA-Cur composite nanomaterials. GO/PDA-Cur was characterized by physical and optical means, and GO/PDA-Cur possessed good dispersion and stability in water. In vitro antibacterial results showed that GO/PDA-Cur mediated photodynamic therapy significantly reduced Gram-positive Staphylococcus aureus (S. aureus) by 4 orders of magnitude with a bactericidal rate of 99.99 %. The antibacterial mechanism stems from the fact that GO/PDA-Cur can generate reactive oxygen species (ROS) under white light irradiation (405-780 nm), which causes bacterial outer membrane breakage and cellular deformation. In addition, GO/PDA-Cur has good biocompatibility. The antibacterial ability of graphene oxide was significantly improved by combining it with PDA-Cur, which allows it to be used as a photodynamic antibacterial material.
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Affiliation(s)
- Hongjun Yan
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China
| | - Peiyuan Li
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China.
| | - Xiantao Jiang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Xiaoxun Wang
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China
| | - Yuting Hu
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China
| | - Ying Zhang
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China
| | - Rixiang Su
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning, China
| | - Wei Su
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China.
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6
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Zhao S, Zhu X, Mou M, Wang Z, Duo L. Assessment of graphene oxide toxicity on the growth and nutrient levels of white clover (Trifolium repens L.). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 234:113399. [PMID: 35298969 DOI: 10.1016/j.ecoenv.2022.113399] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/26/2021] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
Carbon nanomaterials (CNMs) are novel engineered nanomaterials and have been used widely. Their toxic effects on terrestrial plants in soil matrix require careful investigation. In this study, white clover (Trifolium repens L.) was grown in a potted soil with graphene oxide (GO) at levels of 0.2%, 0.4% and 0.6% and the effects of GO on the growth and nutrient uptake of white clover were evaluated after 50 and 100 days of exposure. GO exposure showed adverse effects on seedling growth, photosynthetic parameters and nutrient uptake in shoots, and the effect was more significant with increasing concentration and exposure time. Compared with the control, GO at the highest level of 0.6% decreased plant height, leaf and stem dry weights, total chlorophyll content and net photosynthetic rate by 43.7%, 45.7%, 43.4%, 32% and 85.7%, respectively, after 100 d of exposure, and N, K, Cu, Zn, Fe, Mo, B, Si contents decreased by 19.5%, 20.1%, 12.6%, 25.0%, 12.9%, 26.0%, 18.9%, 23.0%, respectively. Furthermore, the electrolyte leakage, lipid peroxidation, reactive oxygen species, antioxidant enzyme activities were all increased by GO, especially at high dose and long exposure. These results indicate that GO can suppress plant growth by oxidative stress, photosynthesis inhibition, and nutrient imbalance.
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Affiliation(s)
- Shulan Zhao
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Xiangui Zhu
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Mengdi Mou
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Ziyuan Wang
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China
| | - Lian Duo
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin 300387, China.
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Guo Z, Feng Y, Zhang C, Huang G, Chi J, Yao Q, Zhang G, Chen X. Three dimensional graphene materials doped with heteroatoms for extraction and adsorption of environmental pollutants in wastewater. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, TOXICOLOGY AND CARCINOGENESIS 2021; 39:17-43. [PMID: 33554725 DOI: 10.1080/26896583.2020.1863725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Environmental pollution by heavy metal ions, organic pollutants, oils, pesticides or dyes is a ubiquitous problem adversely affecting human health and environmental ecology. Development and application novel adsorbents in full-scale treatment systems with effectiveness properties could effective ways to facilitate the extraction and adsorption of environment pollutants from wastewater. Graphene materials have drawn much attention due to their extraordinary electron mobilities, high surface areas, good thermal conductivities, and excellent mechanical properties. Three-dimensional graphene materials can provide the inherent advantages of 2D graphene sheets and exhibit micro/nanoporous structures, increased specific surface areas, high electron conductivities, fast mass transport kinetics, and strong mechanical strength. Potential applications for 3D graphene materials include environmental remediation, chemical and biological sensing, catalysis, and super capacitors. Recent advances in the applications of 3D functionalized graphene materials (3D FGMs) doped with heteroatoms for the extraction and adsorption of environmental pollutants in wastewater are summarized in this review.
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Affiliation(s)
- Zhiyong Guo
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
- Key Laboratory of environmental monitoring, Universities of Fujian Province, Fujian Province, China
| | - Yufeng Feng
- The First Affiliated Hospital of Xiamen University, Xiamen University, Xiamen, China
| | - Chen Zhang
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Guihua Huang
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Jinxin Chi
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Qiuhong Yao
- Institute of Analytical Technology and Smart Instruments and College of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, China
| | - Guofeng Zhang
- Baotai Biological Technology Co. Ltd of Xiamen, Xiamen, China
| | - Xi Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China
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Xie C, Zhang P, Guo Z, Li X, Pang Q, Zheng K, He X, Ma Y, Zhang Z, Lynch I. Elucidating the origin of the surface functionalization - dependent bacterial toxicity of graphene nanomaterials: Oxidative damage, physical disruption, and cell autolysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 747:141546. [PMID: 32795811 DOI: 10.1016/j.scitotenv.2020.141546] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Previous studies have shown that the toxicity of graphene nanomaterials (GNMs) to bacteria are related to the surface functionalization, however, the involved mechanisms are not fully understood. The present study aims to explore the toxic mechanisms of differentially functionalized GNMs to bacteria from the aspects of physical interaction, oxidative damage and cell autolysis. Three basic functionalization of GNMs including carboxylation (G-COOH), hydroxylation (G-OH) and amination (G-NH2) were studied. G-COOH (66% viability vs CT group) and G-OH (54%) graphene showed higher toxicity to E. coli than G-NH2 (96%) within 3 h at a concentration of 50 mg/L. The three materials showed distinct physical interaction modes with bacterial cells. G-COOH and G-OH contact with cell membrane via their sharp edges thus causing more damage than G-NH2 which covered the bacteria attaching along the basal plane. The three GNMs showed similar radical generation capacities, thus the direct generation of radicals is not the mechanism causing the toxicity. Instead, the GNMs can oxidize the cellular antioxidant glutathione (GSH) thereby causing oxidative damage. The oxidative capacity follows the order: G-COOH > G-OH > G-NH2, which correlated with the antibacterial activity. Cell autolysis, the degradation of cell wall component peptidoglycan, was found to be a new mechanism inducing the death of bacteria. G-COOH and G-OH caused more cell autolysis than G-NH2, which accounts partially for the different toxicity of the three GNMs. The findings provide significant insights into the mechanism of GNMs toxicity to bacteria for not only the risk assessment of GNMs but also the design of graphene based antibacterial materials.
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Affiliation(s)
- Changjian Xie
- School of life Sciences, Shandong University of Technology, No.266 Xincun West Road, Zibo 255000, Shandong, China; Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Zhang
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK.
| | - Zhiling Guo
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Xiaowei Li
- School of life Sciences, Shandong University of Technology, No.266 Xincun West Road, Zibo 255000, Shandong, China
| | - Qiuxiang Pang
- School of life Sciences, Shandong University of Technology, No.266 Xincun West Road, Zibo 255000, Shandong, China
| | - Kang Zheng
- School of life Sciences, Shandong University of Technology, No.266 Xincun West Road, Zibo 255000, Shandong, China
| | - Xiao He
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yuhui Ma
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Zhiyong Zhang
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
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Ning H, Wang S, Li Y, Sun G, He J. The cell structure damage and embden-meyerhof-parnas pathway inhibition of Listeria monocytogenes induced by glycinin basic peptide. Microb Pathog 2020; 152:104635. [PMID: 33232764 DOI: 10.1016/j.micpath.2020.104635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 10/22/2022]
Abstract
Glycinin basic peptide (GBP) is a natural antibacterial peptide. This study aimed to explore the antibacterial characteristics of GBP against Listeria monocytogenes (L. monocytogenes) by measuring the membrane potential, membrane permeability, cell damage, morphological changes, respiration metabolism inhibition and DNA content. GBP increased the surface zeta potential and decreased the trans-membrane potential of L. monocytogenes in a dose-dependent manner. Compared with the control, the electrical conductivities of GBP-treated bacterial suspensions were significantly increased. The percentages of bacteria with damaged membrane increased from 6.40% to 70.90% with GBP from 0 to 0.8 mg/mL. Obvious rupture and deform of bacterial cells with GBP were observed by transmission electron microscope (TEM), showing the destructive effect of GBP on L. monocytogenes. GBP also inhibited the embden-meyerhof-parnas pathway of the bacterial respiration metabolism and reduced the activities of its key regulator enzymes. Besides, the content of DNA in GBP-treated L. monocytogenes was lower than that in control.
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Affiliation(s)
- Houqi Ning
- School of Food Science & Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, 250353, Jinan, Shandong Province, China
| | - Shuangtong Wang
- School of Food Science & Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, 250353, Jinan, Shandong Province, China
| | - Yingqiu Li
- School of Food Science & Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, 250353, Jinan, Shandong Province, China.
| | - Guijin Sun
- School of Food Science & Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, 250353, Jinan, Shandong Province, China
| | - Jinxing He
- School of Food Science & Engineering, Qilu University of Technology (Shandong Academy of Sciences), No. 3501 University Road of Changqing District, 250353, Jinan, Shandong Province, China
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10
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Lu Y, Zhong L, Tang L, Wang H, Yang Z, Xie Q, Feng H, Jia M, Fan C. Extracellular electron transfer leading to the biological mediated production of reduced graphene oxide. CHEMOSPHERE 2020; 256:127141. [PMID: 32470738 DOI: 10.1016/j.chemosphere.2020.127141] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 03/26/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
To explore a green, low-cost, and efficient strategy to synthesis reduced graphene oxide (RGO), the process and mechanism of the graphene oxide (GO) reduction by a model electrochemically active bacteria (EAB), Geobacter sulfurreducens PCA, were studied. In this work, up to 1.0 mg mL-1 of GO was reduced by G. sulfurreducens within 0.5-8 days. ID/IG ratio in reduced product was similar to chemically RGO. After microbial reduction, the peak which corresponded to the reflection of graphene oxide (001) disappeared, while another peak considered as graphite spacing (002) appeared. The peak intensity of typical oxygen function groups, such as carboxyl C-O and >O (epoxide) groups, diminished in bacterially induced RGO comparing to initial GO. Besides, we observed the doping of nitrogen and phosphorus elements in bacterially induced RGO. In a good agreement with that, better electrochemical performance was noticed after GO reduction. As confirmed with differential pulse voltammetry (DPV) and cyclic voltammetry (CV) analysis, the maximum value of peak currents of bacterially induced RGO were significantly higher than those of GO. Our results showed the electron transfer at microbial cell/GO interface promoted the GO reduction, suggesting a broader application of EAB in biological mediated production of RGO.
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Affiliation(s)
- Yue Lu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China.
| | - Linrui Zhong
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Lin Tang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China.
| | - Huan Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Zhaohui Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Qingqing Xie
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Haopeng Feng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Meiying Jia
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
| | - Changzheng Fan
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
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11
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Zhu C, Mahmood Z, Zhang W, Akram MW, Ainur D, Ma H. In situ investigation of acute exposure of graphene oxide on activated sludge: Biofilm characteristics, microbial activity and cytotoxicity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 199:110639. [PMID: 32408033 DOI: 10.1016/j.ecoenv.2020.110639] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 03/26/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
Graphene Oxide (GO) has wide applications in many fields which has caused a large expected quantity of the graphene-based wastes. It is necessary to understand the toxic effects of the GO on the activated sludge (AS) considering its inevitable discharge to the wastewater treatment plants as the ultimate repositories for these wastes. In this study, the acute exposures of the multilayer Nano-graphene oxide (MNGO) at different dosages were conducted in order to investigate its integrated effects on the formation of the biofilm, mature biofilm and the microbial activity of the activated sludge. Raman spectroscopy and laser scanning confocal microscopy (LSCM) were adopted for the in-situ characterization of the biofilm with the exposure of the MNGO. The results showed that the activated sludge was tolerable to the acute exposure of the less than 100 mg/L of the MNGO, especially for the mature biofilm, and only a subtle decrease was found in the size and thickness during the formation of the biofilm, while the amount of 300 mg/L of the MNGO caused the sever deterioration on the activated sludge system. The microbial metabolic activity, viability, and the biological removal of the nutrients were significantly affected with the more than 100 mg/L of the MNGO. It was also demonstrated by the microbial cytotoxicity tests that the increase in the exposure of the MNGO was related to the increase in the reactive oxygen species (ROS) and the damaging degree of the cell membrane.
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Affiliation(s)
- Chao Zhu
- School of Environmental Science & Engineering. Shaanxi University of Science and Technology, Xi'an, China.
| | - Zarak Mahmood
- School of Environmental Science & Engineering. Shaanxi University of Science and Technology, Xi'an, China
| | - Wenting Zhang
- School of Environmental Science & Engineering. Shaanxi University of Science and Technology, Xi'an, China
| | - M Waqar Akram
- Department of Precision Machinery and Instrumentation. University of Science and Technology of China, Hefei, China
| | - Dyussenova Ainur
- School of Environmental Science & Engineering. Shaanxi University of Science and Technology, Xi'an, China
| | - Hongrui Ma
- School of Environmental Science & Engineering. Shaanxi University of Science and Technology, Xi'an, China
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12
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Sobańska Z, Domeradzka-Gajda K, Szparaga M, Grobelny J, Tomaszewska E, Ranoszek-Soliwoda K, Celichowski G, Zapór L, Kowalczyk K, Stępnik M. Comparative analysis of biological effects of molybdenum(IV) sulfide in the form of nano- and microparticles on human hepatoma HepG2 cells grown in 2D and 3D models. Toxicol In Vitro 2020; 68:104931. [PMID: 32640262 DOI: 10.1016/j.tiv.2020.104931] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/18/2020] [Accepted: 07/01/2020] [Indexed: 10/23/2022]
Abstract
Significance of MoS2 nanoparticles as a lubricant or drug carriers indicates the need to assess their safety. In the study we analyzed the effects of MoS2 nano- and microparticles and their internalization in vitro, using 2D and 3D culture models of human hepatoma HepG2 cell line. MoS2 micro- and nanoparticles were characterized with high resolution electron microscopy (HR-SEM), X-ray diffraction (XRD) and Energy Dispersive X-Ray Spectroscopy (EDS). The cells were exposed to a range of concentrations of the nano-and microparticles suspensions (maximum of 250 μg/mL) for 72 h. Cell viability was assessed using WST-1 reduction test and LDH release assay. Particle internalization was analyzed using scanning transmission electron microscopy (STEM). The nanoparticles were internalized into the 2D and 3D cultured cells, in spheroids more efficiently into the outer layer. For microparticles mainly particles of less than 1 μm in diameter underwent internalization. This process, however, did not affect cell viability as measured with the WST-1 and LDH assays. STEM observation showed well preserved integrity of the cell membrane and no apparent cytotoxic effect. Although the particles seemed to be safely sequestered in vacuoles or the cytoplasm, their fate and eventual biological effects are not certain and deserve further studies.
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Affiliation(s)
- Z Sobańska
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - K Domeradzka-Gajda
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - M Szparaga
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - J Grobelny
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - E Tomaszewska
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - K Ranoszek-Soliwoda
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - G Celichowski
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Łódź, 163 Pomorska St, Łódź 90-236, Poland
| | - L Zapór
- Central Institute for Labour Protection-National Research Institute, Czerniakowska 16 St, Warsaw, Poland
| | - K Kowalczyk
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland
| | - M Stępnik
- Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Sw. Teresy 8 St, Łódź, Poland.
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Antimicrobial mechanism of reduced graphene oxide-copper oxide (rGO-CuO) nanocomposite films: The case of Pseudomonas aeruginosa PAO1. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 109:110596. [DOI: 10.1016/j.msec.2019.110596] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/22/2019] [Accepted: 12/22/2019] [Indexed: 11/18/2022]
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14
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Kedves A, Sánta L, Balázs M, Kesserű P, Kiss I, Rónavári A, Kónya Z. Chronic responses of aerobic granules to the presence of graphene oxide in sequencing batch reactors. JOURNAL OF HAZARDOUS MATERIALS 2019; 389:121905. [PMID: 31874760 DOI: 10.1016/j.jhazmat.2019.121905] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 12/13/2019] [Accepted: 12/14/2019] [Indexed: 02/07/2023]
Abstract
The chronic responses of aerobic granular sludge (AGS) to the presence of graphene oxide nanoparticles (GO NPs) (5, 15, 25, 35, 45, 55, 65, 75, 85, and 95 mg/L of GO NPs for 7 days) during biological wastewater treatment processes were investigated. Bioreactor performance, extracellular polymeric substance (EPS) secretion, and microbial community characteristics were assessed. The results showed that the effects of GO NPs on bioreactor performances were dependent on the dose applied and the duration for which it was applied. At concentrations of 55, 75, and 95 mg/L, GO NPs considerably inhibited the efficiency of organic matter and ammonia removal; however, nitrite and nitrate removal rates were unchanged. Biological phosphorus removal decreased even when only low concentrations of GO NPs were used. The secretion of EPS, which could alleviate the toxicity of GO NPs, also changed. The increased amount of nanoparticles also resulted in significant changes to the bacterial community structure. Based on the amplicon sequencing of 16S rRNA genes, Paracoccus sp., Klebsiella sp., and Acidovorax species were identified as the most tolerant strains.
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Affiliation(s)
- Alfonz Kedves
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary
| | - Levente Sánta
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary
| | - Margit Balázs
- Bay Zoltán Nonprofit Ltd. for Applied Research, BAY-BIO Division for Biotechnology, Szeged, Hungary
| | - Péter Kesserű
- Bay Zoltán Nonprofit Ltd. for Applied Research, BAY-BIO Division for Biotechnology, Szeged, Hungary
| | - István Kiss
- Bay Zoltán Nonprofit Ltd. for Applied Research, BAY-BIO Division for Biotechnology, Szeged, Hungary
| | - Andrea Rónavári
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary
| | - Zoltán Kónya
- Department of Applied and Environmental Chemistry, University of Szeged, Szeged, Hungary; MTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, Szeged, Hungary.
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15
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Ioannidis K, Niazi S, Mylonas P, Mannocci F, Deb S. The synthesis of nano silver-graphene oxide system and its efficacy against endodontic biofilms using a novel tooth model. Dent Mater 2019; 35:1614-1629. [PMID: 31530433 DOI: 10.1016/j.dental.2019.08.105] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/25/2019] [Accepted: 08/22/2019] [Indexed: 12/19/2022]
Abstract
OBJECTIVE The deleterious caustic effects of sodium hypochlorite (NaOCl) as a root canal irrigant makes it imperative that alternative methods are developed for root canal disinfection. The purpose of this study was to examine the antimicrobial efficacy of silver nanoparticles (AgNPs) synthesized on an aqueous graphene oxide (GO) matrix (Ag-GO), with different irrigant delivery methods to enhance the disinfection regimen, using a novel ex vivo infected tooth model. METHODS AgNPs were prepared by reducing AgNO3 with 0.01M NaBH4 in presence of GO. Elemental analysis was performed with scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS) and scanning transmission electron microscopy (STEM) was used for size and morphology analysis of GO and Ag-GO. Nutrient stressed, multi-species biofilms were grown in prepared root canals of single-rooted teeth. The irrigants used were sterile saline, 1% and 2.5% NaOCl, 2% chlorhexidine gluconate (CHX), 17% EDTA and an aqueous suspension of 0.25% Ag-GO. The antimicrobial efficacy of the irrigants were performed with paper point sampling and measurement of microbial counts. The biofilm disruption in dentine tubule surfaces was analysed with confocal laser scanning microscopy (CLSM). The acquisition of total biovolume (μm3/μm2) and biofilm viability was performed using software BioImage_L. Two-way analysis of variance (ANOVA) with post hoc Tukey tests was used for data analysis with level of statistical significance set at P<0.05. RESULTS SEM/EDS analysis confirmed impregnation of Ag within the GO matrix. TEM images showed polygonal GO sheets and spherical AgNPs of diameter 20-50nm, forming a network on the surface of GO sheets. The use of ultrasonic activation enhanced the efficacy of Ag-GO compared to 1% NaOCl, 2% CHX, 17% EDTA and sterile saline (P<0.05). The microbial killing efficacy of 2.5% NaOCl was superior compared to the experimental groups. The maximum biofilm disruption, in dentine tubule surfaces, was achieved by 2.5% NaOCl, however Ag-GO caused a significant reduction of total biovolumes compared to the rest of the experimental groups (P<0.05%). SIGNIFICANCE The successful documentation of the microbial killing and biofilm disruption capacity of Ag-GO is a promising step forward to explore its unique properties in clinical applications and biomaterials in dentistry.
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Affiliation(s)
- Konstantinos Ioannidis
- Centre for Oral Clinical & Translational Science, Faculty of Dentistry, Oral & Craniofacial Sciences, Floor 17, Tower Wing, Guy's Hospital, London Bridge, King's College London, London SE1 9RT, UK
| | - Sadia Niazi
- Department of Endodontics, Faculty of Dentistry, Oral & Craniofacial Sciences, Postgraduate Centre, Floor 22, Tower Wing, Guy's Hospital, London Bridge, King's College London, London SE1 9RT, UK
| | - Petros Mylonas
- Centre for Oral Clinical & Translational Science, Faculty of Dentistry, Oral & Craniofacial Sciences, Floor 17, Tower Wing, Guy's Hospital, London Bridge, King's College London, London SE1 9RT, UK
| | - Francesco Mannocci
- Centre for Oral Clinical & Translational Science, Faculty of Dentistry, Oral & Craniofacial Sciences, Floor 17, Tower Wing, Guy's Hospital, London Bridge, King's College London, London SE1 9RT, UK
| | - Sanjukta Deb
- Centre for Oral Clinical & Translational Science, Faculty of Dentistry, Oral & Craniofacial Sciences, Floor 17, Tower Wing, Guy's Hospital, London Bridge, King's College London, London SE1 9RT, UK.
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16
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Fallatah H, Elhaneid M, Ali-Boucetta H, Overton TW, El Kadri H, Gkatzionis K. Antibacterial effect of graphene oxide (GO) nano-particles against Pseudomonas putida biofilm of variable age. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:25057-25070. [PMID: 31250387 PMCID: PMC6689283 DOI: 10.1007/s11356-019-05688-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 06/04/2019] [Indexed: 05/29/2023]
Abstract
Graphene oxide (GO) has been reported to possess antibacterial activity; therefore, its accumulation in the environment could affect microbial communities such as biofilms. The susceptibility of biofilms to antimicrobials is known to depend on the stage of biofilm maturity. The aim of this study was to investigate the effect of GO nano-particles on Pseudomonas putida KT2440 biofilm of variable age. FT-IR, UV-vis, and Raman spectroscopy confirmed the oxidation of graphene while XPS confirmed the high purity of the synthesised GO over 6 months. Biofilms varying in maturity (24, 48, and 72 h) were formed using a CDC reactor and were treated with GO (85 μg/mL or 8.5 μg/mL). The viability of P. putida was monitored by culture on media and the bacterial membrane integrity was assessed using flow cytometry. P. putida cells were observed using confocal microscopy and SEM. The results showed that GO significantly reduced the viability of 48-h biofilm and detached biofilm cells associated with membrane damage while the viability was not affected in 24- and 72-h biofilms and detached biofilm cells. The results showed that susceptibility of P. putida biofilm to GO varied according to age which may be due to changes in the physiological state of cells during maturation. Graphical abstract.
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Affiliation(s)
- Hussam Fallatah
- School of Chemical Engineering, University of Birmingham, B15 2TT, Birmingham, UK
| | - Mohamad Elhaneid
- School of Pharmacy, University of Birmingham, B15 2TT, Birmingham, UK
| | | | - Tim W Overton
- School of Chemical Engineering, University of Birmingham, B15 2TT, Birmingham, UK
| | - Hani El Kadri
- School of Chemical Engineering, University of Birmingham, B15 2TT, Birmingham, UK.
| | - Konstantinos Gkatzionis
- School of Chemical Engineering, University of Birmingham, B15 2TT, Birmingham, UK.
- Department of Food Science and Nutrition, School of the Environment, University of the Aegean, Metropolite Ioakeim 2, 81400, Myrina, Lemnos, Greece.
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17
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Alayande AB, Park HD, Vrouwenvelder JS, Kim IS. Implications of Chemical Reduction Using Hydriodic Acid on the Antimicrobial Properties of Graphene Oxide and Reduced Graphene Oxide Membranes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1901023. [PMID: 31148406 DOI: 10.1002/smll.201901023] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/05/2019] [Indexed: 06/09/2023]
Abstract
The antimicrobial properties of graphene-based membranes such as single-layer graphene oxide (GO) and modified graphene oxide (rGO) on top of cellulose ester membrane are reported in this study. rGO membranes are made from GO by hydriodic acid (HI) vapor treatment. The antibacterial properties are tested after 3 h contact time with selected model bacteria. Complete bacterial cell inactivation is found only after contact with rGO membranes, while no significant bacterial inactivation is found for the control i) GO membrane, ii) the mixed cellulose ester support, and the iii) rGO membrane after additional washing that removes the remaining HI. This indicates that the antimicrobial effect is neither caused by the graphene nor the membrane support. The antimicrobial effect is found to be conclusively linked to the HI eliminating microbial growth, at concentrations from 0.005%. These findings emphasize the importance of caution in the reporting of antimicrobial properties of graphene-based surfaces.
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Affiliation(s)
- Abayomi Babatunde Alayande
- Global Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, South Korea
| | - Hee-Deung Park
- School of Civil, Environmental and Architectural Engineering, Korea University, Seoul, 02841, South Korea
| | - Johannes S Vrouwenvelder
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal, 23955-6900, Saudi Arabia
| | - In S Kim
- Global Desalination Research Center (GDRC), School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, 61005, South Korea
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18
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Safford HR, Bischel HN. Flow cytometry applications in water treatment, distribution, and reuse: A review. WATER RESEARCH 2019; 151:110-133. [PMID: 30594081 DOI: 10.1016/j.watres.2018.12.016] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/30/2018] [Accepted: 12/01/2018] [Indexed: 06/09/2023]
Abstract
Ensuring safe and effective water treatment, distribution, and reuse requires robust methods for characterizing and monitoring waterborne microbes. Methods widely used today can be limited by low sensitivity, high labor and time requirements, susceptibility to interference from inhibitory compounds, and difficulties in distinguishing between viable and non-viable cells. Flow cytometry (FCM) has recently gained attention as an alternative approach that can overcome many of these challenges. This article critically and systematically reviews for the first time recent literature on applications of FCM in water treatment, distribution, and reuse. In the review, we identify and examine nearly 300 studies published from 2000 to 2018 that illustrate the benefits and challenges of using FCM for assessing source-water quality and impacts of treatment-plant discharge on receiving waters, wastewater treatment, drinking water treatment, and drinking water distribution. We then discuss options for combining FCM with other indicators of water quality and address several topics that cut across nearly all applications reviewed. Finally, we identify priority areas in which more work is needed to realize the full potential of this approach. These include optimizing protocols for FCM-based analysis of waterborne viruses, optimizing protocols for specifically detecting target pathogens, automating sample handling and preparation to enable real-time FCM, developing computational tools to assist data analysis, and improving standards for instrumentation, methods, and reporting requirements. We conclude that while more work is needed to realize the full potential of FCM in water treatment, distribution, and reuse, substantial progress has been made over the past two decades. There is now a sufficiently large body of research documenting successful applications of FCM that the approach could reasonably and realistically see widespread adoption as a routine method for water quality assessment.
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Affiliation(s)
- Hannah R Safford
- Department of Civil and Environmental Engineering, University of California Davis, 2001 Ghausi Hall, 480 Bainer Hall Drive, 95616, Davis, CA, United States
| | - Heather N Bischel
- Department of Civil and Environmental Engineering, University of California Davis, 2001 Ghausi Hall, 480 Bainer Hall Drive, 95616, Davis, CA, United States.
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19
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Ko K, Kim MJ, Lee JY, Kim W, Chung H. Effects of graphene oxides and silver-graphene oxides on aquatic microbial activity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 651:1087-1095. [PMID: 30266053 DOI: 10.1016/j.scitotenv.2018.09.124] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 08/15/2018] [Accepted: 09/09/2018] [Indexed: 06/08/2023]
Abstract
Graphene oxide (GO) and silver-graphene oxide (Ag-GO) are used in various fields, such as biotechnology and environmental engineering, due to their unique material properties, including hydrophilicity, high surface area, mechanical strength, and antibacterial activity. With the increase in the usage of such nanomaterials, they are likely to enter the aquatic environment during the manufacturing process, product use, and disposal. However, the effects of GO and Ag-GO on aquatic microbial activities are not well understood. In this study, we aimed to determine the effects of GO and Ag-GO on the aquatic microbial communities inhabiting a river and a lake located in Seoul, South Korea. Unfiltered natural surface water samples were exposed to GO and Ag-GO at a final concentration of 10 to 100 mg L-1 for 48 h. The activity of leucine aminopeptidase was significantly lowered within 1 h of GO and Ag-GO treatments and nitrification rate was significantly lowered. An increase in intracellular lactate dehydrogenase levels of up to 5% was observed in natural waters under GO and Ag-GO treatments compared to the control (0%), indicating cell membrane damage. In addition, generation of intracellular reactive oxygen species increased up to 184% under 100 mg GO L-1 and 102% under 100 mg Ag-GO L-1 treatment compared to the control (0%). Our results indicate that the activities of microorganisms inhabiting natural surface waters may have been inhibited by oxidative stress and cell membrane damage induced by GO and Ag-GO. We believe that our results may contribute to the development of regulatory guidelines on the release of emerging engineered nanomaterials to the environment.
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Affiliation(s)
- Kwanyoung Ko
- Department of Environmental Engineering, Konkuk University, Seoul 143-701, Republic of Korea
| | - Min-Ji Kim
- Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Ji-Yeon Lee
- Department of Environmental Engineering, Konkuk University, Seoul 143-701, Republic of Korea
| | - Woong Kim
- Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea
| | - Haegeun Chung
- Department of Environmental Engineering, Konkuk University, Seoul 143-701, Republic of Korea.
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20
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The Synergistic Antibacterial Properties of Glycinin Basic Peptide against Bacteria via Membrane Damage and Inactivation of Enzymes. FOOD BIOPHYS 2019. [DOI: 10.1007/s11483-018-09564-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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21
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Anand A, Unnikrishnan B, Wei SC, Chou CP, Zhang LZ, Huang CC. Graphene oxide and carbon dots as broad-spectrum antimicrobial agents - a minireview. NANOSCALE HORIZONS 2019; 4:117-137. [PMID: 32254148 DOI: 10.1039/c8nh00174j] [Citation(s) in RCA: 126] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Due to the increasing global population, growing contamination of water and air, and wide spread of infectious diseases, antibiotics are extensively used as a major antibacterial drug. However, many microbes have developed resistance to antibiotics through mutation over time. As an alternative to antibiotics, antimicrobial nanomaterials have attracted great attention due to their advantageous properties and unique mechanisms of action toward microbes. They inhibit bacterial growth and destroy cells through complex mechanisms, making it difficult for bacteria to develop drug resistance, though some health concerns related to biocompatibility remain for practical applications. Among various antibacterial nanomaterials, carbon-based materials, especially graphene oxide (GO) and carbon dots (C-Dots), are promising candidates due to the ease of production and functionalization, high dispersibility in aqueous media, and promising biocompatibility. The antibacterial properties of these nanomaterials can be easily adjusted by surface modification. They are promising materials for future applications against multidrug-resistant bacteria based on their strong capacity in disruption of microbial membranes. Though many studies have reported excellent antibacterial activity of carbon nanomaterials, their impact on the environment and living organisms is of concern due to the accumulatory and cytotoxic effects. In this review, we discuss antimicrobial applications of the functional carbon nanomaterials (GO and C-Dots), their antibacterial mechanisms, factors affecting antibacterial activity, and concerns regarding cytotoxicity.
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Affiliation(s)
- Anisha Anand
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan.
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22
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Fadeel B, Bussy C, Merino S, Vázquez E, Flahaut E, Mouchet F, Evariste L, Gauthier L, Koivisto AJ, Vogel U, Martín C, Delogu LG, Buerki-Thurnherr T, Wick P, Beloin-Saint-Pierre D, Hischier R, Pelin M, Candotto Carniel F, Tretiach M, Cesca F, Benfenati F, Scaini D, Ballerini L, Kostarelos K, Prato M, Bianco A. Safety Assessment of Graphene-Based Materials: Focus on Human Health and the Environment. ACS NANO 2018; 12:10582-10620. [PMID: 30387986 DOI: 10.1021/acsnano.8b04758] [Citation(s) in RCA: 300] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Graphene and its derivatives are heralded as "miracle" materials with manifold applications in different sectors of society from electronics to energy storage to medicine. The increasing exploitation of graphene-based materials (GBMs) necessitates a comprehensive evaluation of the potential impact of these materials on human health and the environment. Here, we discuss synthesis and characterization of GBMs as well as human and environmental hazard assessment of GBMs using in vitro and in vivo model systems with the aim to understand the properties that underlie the biological effects of these materials; not all GBMs are alike, and it is essential that we disentangle the structure-activity relationships for this class of materials.
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Affiliation(s)
- Bengt Fadeel
- Nanosafety & Nanomedicine Laboratory, Institute of Environmental Medicine , Karolinska Institutet , 17777 Stockholm , Sweden
| | - Cyrill Bussy
- Nanomedicine Laboratory, Faculty of Biology, Medicine & Health , University of Manchester , Manchester M13 9PL , United Kingdom
| | - Sonia Merino
- Faculty of Chemical Science and Technology , University of Castilla-La Mancha , 13071 Ciudad Real , Spain
| | - Ester Vázquez
- Faculty of Chemical Science and Technology , University of Castilla-La Mancha , 13071 Ciudad Real , Spain
| | | | | | | | - Laury Gauthier
- CNRS, Université Paul Sabatier , 31062 Toulouse , France
| | - Antti J Koivisto
- National Research Centre for the Working Environment , 2100 Copenhagen , Denmark
| | - Ulla Vogel
- National Research Centre for the Working Environment , 2100 Copenhagen , Denmark
| | - Cristina Martín
- University of Strasbourg, CNRS , Immunology, Immunopathology and Therapeutic Chemistry , 67000 Strasbourg , France
| | - Lucia G Delogu
- Department of Chemistry and Pharmacy University of Sassari , Sassari 7100 , Italy
- Istituto di Ricerca Pediatrica , Fondazione Città della Speranza , 35129 Padova , Italy
| | - Tina Buerki-Thurnherr
- Swiss Federal Laboratories for Materials Science and Technology (EMPA) , 9014 St. Gallen , Switzerland
| | - Peter Wick
- Swiss Federal Laboratories for Materials Science and Technology (EMPA) , 9014 St. Gallen , Switzerland
| | | | - Roland Hischier
- Swiss Federal Laboratories for Materials Science and Technology (EMPA) , 9014 St. Gallen , Switzerland
| | - Marco Pelin
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy
| | | | - Mauro Tretiach
- Department of Life Sciences , University of Trieste , 34127 Trieste , Italy
| | - Fabrizia Cesca
- Center for Synaptic Neuroscience and Technology , Istituto Italiano di Tecnologia , 16132 Genova , Italy
| | - Fabio Benfenati
- Center for Synaptic Neuroscience and Technology , Istituto Italiano di Tecnologia , 16132 Genova , Italy
| | - Denis Scaini
- Scuola Internazionale Superiore di Studi Avanzati (SISSA) , 34136 Trieste , Italy
| | - Laura Ballerini
- Scuola Internazionale Superiore di Studi Avanzati (SISSA) , 34136 Trieste , Italy
| | - Kostas Kostarelos
- Nanomedicine Laboratory, Faculty of Biology, Medicine & Health , University of Manchester , Manchester M13 9PL , United Kingdom
| | - Maurizio Prato
- Department of Chemical and Pharmaceutical Sciences , University of Trieste , 34127 Trieste , Italy
- Carbon Nanobiotechnology Laboratory , CIC BiomaGUNE , 20009 San Sebastian , Spain
- Basque Foundation for Science, Ikerbasque , 48013 Bilbao , Spain
| | - Alberto Bianco
- University of Strasbourg, CNRS , Immunology, Immunopathology and Therapeutic Chemistry , 67000 Strasbourg , France
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23
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Wu R, Ou X, Tian R, Zhang J, Jin H, Dong M, Li J, Liu L. Membrane destruction and phospholipid extraction by using two-dimensional MoS 2 nanosheets. NANOSCALE 2018; 10:20162-20170. [PMID: 30259040 DOI: 10.1039/c8nr04207a] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The interaction of two-dimensional (2D) nanomaterials and bacterial membranes has attracted tremendous attention in antibacterial applications. Various peculiarities of 2D nanomaterials may lead to multiple mechanisms of their interactions with membranes. Here, we investigated the interaction between molybdenum disulfide (MoS2) nanosheets and the bacterial membrane by using both theoretical and experimental approaches. Molecular dynamics simulation presented that MoS2 nanosheets can disrupt the structure of the lipid membrane by making dents on its surface and extracting phospholipid molecules to reduce the integrity of the membrane. This is attributed to the combination of the dispersion interaction of lipid tails with S atoms and the electrostatic interactions of lipid head groups with the Mo and S atoms in the lateral edges of the MoS2 nanosheet. Scanning electron microscopy and transmission electron microscopy confirmed the dents and the destruction of the cell membrane, which would lead to the loss of cytoplasm and the death of bacteria. It should be noted that the phenomenon where MoS2 induces a dent is different from the direct insertion of graphene-based nanomaterials, which might be due to the thicker and stiffer structure of MoS2. Therefore, we believe that the molecular interactions of 2D nanomaterials with bacterial membranes should be highly correlated with their structural characteristics. This newly discovered mechanism of MoS2 nanomaterials to disrupt the cell membrane may promote the application of transition metal dichalcogenide (TMD) nanomaterials in designing remarkable antibacterial materials in the near future.
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Affiliation(s)
- Rongrong Wu
- Institute for Advanced Material, Jiangsu University, Zhenjiang 212013, China
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24
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Plate column adsorption of Pb(II) from industrial wastewater on sponge-type composite adsorbent: Optimization and application. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.05.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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25
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Liu G, Zheng H, Jiang Z, Zhao J, Wang Z, Pan B, Xing B. Formation and Physicochemical Characteristics of Nano Biochar: Insight into Chemical and Colloidal Stability. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10369-10379. [PMID: 30141917 DOI: 10.1021/acs.est.8b01481] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Nano biochar (N-BC) attracts increasing interest due to its unique environmental behavior. However, understanding of its formation, physicochemical characteristics, and stability of N-BC is limited. We therefore examined N-BC formation from bulk biochars (B-BCs) produced from peanut shell, cotton straw, Chinese medicine residues, and furfural residues at 300-600 °C. Carbon stability and colloidal processes of nano peanut shell biochars (N-PBCs) were further investigated. N-BCs formed from pore collapse and skeleton fracture during biomass charring, breakup due to grinding, and sonication. Amorphous fraction in B-BCs was more readily degraded into N-BCs than graphitic component. The sonication-formed N-PBCs contained 19.2-31.8% higher oxygen and fewer aromatic structures than the bulk ones, leading to lower carbon stability, but better dispersibility in water. Heteroaggregation of N-PBCs with goethite/hematite destabilized initially and then restabilized with increasing concentrations of N-PBCs. Compared with stacked complexes of N-PBCs-hematite, the association of goethite with N-PBCs could form interlaced heterostructures, thus shielding positive charges on goethite and causing greater heteroaggregation. These findings are useful for better understanding the formation of N-BCs and their environmental fate and behavior in soil and water.
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Affiliation(s)
- Guocheng Liu
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering , Jiangnan University , Wuxi 214122 , China
| | - Hao Zheng
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education , Ocean University of China , Qingdao 266100 , China
| | - Zhixiang Jiang
- College of Environmental Science and Engineering , Qingdao University , Qingdao 266071 , China
| | - Jian Zhao
- College of Environmental Science and Engineering, and Key Laboratory of Marine Environment and Ecology, Ministry of Education , Ocean University of China , Qingdao 266100 , China
| | - Zhenyu Wang
- Institute of Environmental Processes and Pollution Control, and School of Environmental and Civil Engineering , Jiangnan University , Wuxi 214122 , China
| | - Bo Pan
- Faculty of Environmental Science and Engineering , Kunming University of Science and Technology , Kunming 650500 , China
| | - Baoshan Xing
- Stockbridge School of Agriculture , University of Massachusetts , Amherst , Massachusetts 01003 , United States
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26
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Guo C, Wang Y, Luo Y, Chen X, Lin Y, Liu X. Effect of graphene oxide on the bioactivities of nitrifying and denitrifying bacteria in aerobic granular sludge. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 156:287-293. [PMID: 29567509 DOI: 10.1016/j.ecoenv.2018.03.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/08/2018] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
With the widespread application of graphene oxide (GO), it would be inevitably released into wastewater treatment plants (WWTPs) and get involved in the biochemical process. So far, there are controversies on the effects of low GO concentration (0.05-0.1 g/L) on the nitrogen removal process. Therefore, this study essentially investigates any potential effects of GO on wastewater microbial communities functions. In present study, the nitrifying and denitrifying batch tests were introduced to investigate the influence of 0.06 g/L of GO on bacteria. The results showed that GO could be easily combined with the aerobic granular sludge (AGS), and NH4+-N was sharply absorbed, which directly promoted the bioactivities of ammonium oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) and extracellular polymeric substances (EPS) production. The influence of GO on the denitrifying bacteria was negligible, which resulted in the stable EPS production. Furthermore, as inferred from the near maximum chemical reaction rates, there were no obvious changes on the microbial community functions during nitrogen removal process.
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Affiliation(s)
- Chao Guo
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China
| | - Yatao Wang
- School of Urban Construction, Wuhan University of Science and Technology, Wuhan 430065, China; School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
| | - Yulong Luo
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China
| | - Xiaoguo Chen
- College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Yaolin Lin
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China; College of Mechanical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Xiaoying Liu
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China; Engineering Research Center of Groundwater and Eco-Environment of Shanxi Province, Xi'an 710055, China.
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27
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Tan KH, Sattari S, Donskyi IS, Cuellar-Camacho JL, Cheng C, Schwibbert K, Lippitz A, Unger WES, Gorbushina A, Adeli M, Haag R. Functionalized 2D nanomaterials with switchable binding to investigate graphene-bacteria interactions. NANOSCALE 2018; 10:9525-9537. [PMID: 29744504 DOI: 10.1039/c8nr01347k] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Graphene and its derivatives have recently attracted much attention for sensing and deactivating pathogens. However, the mechanism of multivalent interactions at the graphene-pathogen interface is not fully understood. Since different physicochemical parameters of graphene play a role at this interface, control over graphene's structure is necessary to study the mechanism of these interactions. In this work, different graphene derivatives and also zwitterionic graphene nanomaterials (ZGNMs) were synthesized with defined exposure, in terms of polymer coverage and functionality, and isoelectric points. Then, the switchable interactions of these nanomaterials with E. coli and Bacillus cereus were investigated to study the validity of the generally proposed "trapping" and "nano-knives" mechanisms for inactivating bacteria by graphene derivatives. It was found that the antibacterial activity of graphene derivatives strongly depends on the accessible area, i.e. edges and basal plane of sheets and tightness of their agglomerations. Our data clearly confirm the authenticity of "trapping" and "nano-knives" mechanisms for the antibacterial activity of graphene sheets.
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Affiliation(s)
- Kok H Tan
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany.
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28
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Dallavalle M, Bottoni A, Calvaresi M, Zerbetto F. Functionalization Pattern of Graphene Oxide Sheets Controls Entry or Produces Lipid Turmoil in Phospholipid Membranes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:15487-15493. [PMID: 29651839 DOI: 10.1021/acsami.8b03224] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Molecular dynamics, coarse-grained to the level of hydrophobic and hydrophilic interactions, shows that graphene oxide sheets, GOSs, can pierce through the phospholipid membrane and navigate the double layer only if the hydrophilic groups are randomly dispersed in the structure. Their behavior resembles that found in similar calculations for pristine graphene sheets. If the oxidation is located at the edge of the sheets, GOSs hover over the membrane and trigger a major reorganization of the lipids. The reorganization is the largest when the radius of the edge-functionalized sheet is similar to the length of the lipophilic chain of the lipids. In the reorganization, the heads of the lipid chains form dynamical structures that pictorially resemble the swirl of water flowing down a drain. All effects maximize the interaction between hydrophobic moieties on the one hand and lipophilic fragments on the other and are accompanied by a large number of lipid flip-flops. Possible biological consequences are discussed.
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Affiliation(s)
- Marco Dallavalle
- Dipartimento di Chimica "G. Ciamician" , Alma Mater Studiorum-Università di Bologna , via F. Selmi 2 , 40126 Bologna , Italy
| | - Andrea Bottoni
- Dipartimento di Chimica "G. Ciamician" , Alma Mater Studiorum-Università di Bologna , via F. Selmi 2 , 40126 Bologna , Italy
| | - Matteo Calvaresi
- Dipartimento di Chimica "G. Ciamician" , Alma Mater Studiorum-Università di Bologna , via F. Selmi 2 , 40126 Bologna , Italy
| | - Francesco Zerbetto
- Dipartimento di Chimica "G. Ciamician" , Alma Mater Studiorum-Università di Bologna , via F. Selmi 2 , 40126 Bologna , Italy
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29
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Markovic M, Kumar A, Andjelkovic I, Lath S, Kirby JK, Losic D, Batley GE, McLaughlin MJ. Ecotoxicology of manufactured graphene oxide nanomaterials and derivation of preliminary guideline values for freshwater environments. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2018; 37:1340-1348. [PMID: 29314166 DOI: 10.1002/etc.4074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/09/2017] [Accepted: 01/03/2018] [Indexed: 06/07/2023]
Abstract
The unique physical and chemical properties of graphene-based nanomaterials (GNMs) have inspired a diverse range of scientific and industrial applications. The market value of GNMs is predicted to reach $US 1.3 billion by 2023. Common to many nanomaterials, an important and unresolved question is the environmental consequences of the increases in GNMs use. The current deficiencies in studies reporting ecotoxicology data for GNMs include differences in analytical methodologies for quantification, no standardized test guidelines, differences in morphology of GNMs, the lack of Chemical Abstract Service numbers, and the quality of the reported data. The assessment of potential adverse effects on aquatic organisms typically relies on guideline values based on species sensitivity distributions (SSDs) of toxicity data. We present preliminary water quality guideline values for graphene oxide NMs in freshwaters. Data include 10 species from 7 phyla (bacteria and fungi were not included). The most sensitive organism was found to be the freshwater shrimp Palaemon pandaliformis. The derived guideline values for 99, 95, 90, and 80% species protection were 350, 600, 830, and 1300 μg/L, respectively. These results will contribute to the regulatory derivations of future water quality guideline values for graphene-based NMs. Environ Toxicol Chem 2018;37:1340-1348. © 2018 SETAC.
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Affiliation(s)
- Marijana Markovic
- Soil Science, School of Agriculture Food and Wine, University of Adelaide, Glen Osmond, South Australia, Australia
- CSIRO Land and Water, Urrbrae, South Australia, Australia
| | - Anupama Kumar
- CSIRO Land and Water, Urrbrae, South Australia, Australia
| | - Ivan Andjelkovic
- Soil Science, School of Agriculture Food and Wine, University of Adelaide, Glen Osmond, South Australia, Australia
- School of Chemical Engineering, the University of Adelaide, Adelaide, South Australia, Australia
| | - Supriya Lath
- Soil Science, School of Agriculture Food and Wine, University of Adelaide, Glen Osmond, South Australia, Australia
- School of Chemical Engineering, the University of Adelaide, Adelaide, South Australia, Australia
| | - Jason K Kirby
- CSIRO Land and Water, Urrbrae, South Australia, Australia
| | - Dusan Losic
- School of Chemical Engineering, the University of Adelaide, Adelaide, South Australia, Australia
| | - Graeme E Batley
- CSIRO Land and Water, Lucas Heights, New South Wales, Australia
| | - Michael J McLaughlin
- Soil Science, School of Agriculture Food and Wine, University of Adelaide, Glen Osmond, South Australia, Australia
- CSIRO Land and Water, Urrbrae, South Australia, Australia
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30
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Goodwin DG, Adeleye AS, Sung L, Ho KT, Burgess RM, Petersen EJ. Detection and Quantification of Graphene-Family Nanomaterials in the Environment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:4491-4513. [PMID: 29505723 PMCID: PMC5940015 DOI: 10.1021/acs.est.7b04938] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
An increase in production of commercial products containing graphene-family nanomaterials (GFNs) has led to concern over their release into the environment. The fate and potential ecotoxicological effects of GFNs in the environment are currently unclear, partially due to the limited analytical methods for GFN measurements. In this review, the unique properties of GFNs that are useful for their detection and quantification are discussed. The capacity of several classes of techniques to identify and/or quantify GFNs in different environmental matrices (water, soil, sediment, and organisms), after environmental transformations, and after release from a polymer matrix of a product is evaluated. Extraction and strategies to combine methods for more accurate discrimination of GFNs from environmental interferences as well as from other carbonaceous nanomaterials are recommended. Overall, a comprehensive review of the techniques available to detect and quantify GFNs are systematically presented to inform the state of the science, guide researchers in their selection of the best technique for the system under investigation, and enable further development of GFN metrology in environmental matrices. Two case studies are described to provide practical examples of choosing which techniques to utilize for detection or quantification of GFNs in specific scenarios. Because the available quantitative techniques are somewhat limited, more research is required to distinguish GFNs from other carbonaceous materials and improve the accuracy and detection limits of GFNs at more environmentally relevant concentrations.
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Affiliation(s)
- David G. Goodwin
- Engineering Laboratory, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899
| | - Adeyemi S. Adeleye
- National Research Council Research Associate, US Environmental Protection Agency, Atlantic Ecology Division, 27 Tarzwell Dr., Narragansett, RI 02882
| | - Lipiin Sung
- Engineering Laboratory, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899
| | - Kay T. Ho
- US Environmental Protection Agency, Atlantic Ecology Division, 27 Tarzwell Dr., Narragansett, RI 02882
| | - Robert M. Burgess
- US Environmental Protection Agency, Atlantic Ecology Division, 27 Tarzwell Dr., Narragansett, RI 02882
| | - Elijah J. Petersen
- Material Measurement Laboratory, National Institute of Standards and Technology (NIST), Gaithersburg, MD 20899
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31
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Nguyen HN, Rodrigues DF. Chronic toxicity of graphene and graphene oxide in sequencing batch bioreactors: A comparative investigation. JOURNAL OF HAZARDOUS MATERIALS 2018; 343:200-207. [PMID: 28961500 DOI: 10.1016/j.jhazmat.2017.09.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 09/17/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
The present study investigates the chronic toxicity of graphene (G) and graphene oxide (GO) in activated sludge. Sequencing batch bioreactors were fed with influents containing 0, 1 and 5mgL-1 of GO or G (12h cycles) for ten days. Reduction in performance of the bioreactors in relation to chemical oxygen demand, ammonia and phosphate removals was observed after three days in the bioreactors fed with 5mgL-1 of nanomaterials. After about eight days, these reactors reached a steady state nutrient removal, which corresponded to recovery of certain groups of ammonia oxidizing bacteria and phosphate accumulating bacteria despite the increasing accumulation of nanomaterials in the sludge. These results suggested that biological treatment can be affected transiently by initial exposure to the nanomaterials, but certain groups of microorganisms, less sensitive to these nanomaterials, can potentially strive in the presence of these nanomaterials. Results of 16S rRNA gene deep sequencing showed that G and GO affected differently the microbial communities in the activated sludge. Between the two nanomaterials investigated, GO presented the highest impact in nutrient removal, gene abundance and changes in microbial population structures.
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Affiliation(s)
- Hang N Nguyen
- Department of Civil and Environmental Engineering, Room N136 Engineering Building 1, University of Houston, TX 77204-4003, USA
| | - Debora F Rodrigues
- Department of Civil and Environmental Engineering, Room N136 Engineering Building 1, University of Houston, TX 77204-4003, USA.
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32
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Rong Y, Wang Y, Guan Y, Ma J, Cai Z, Yang G, Zhao X. Pyrosequencing Reveals Soil Enzyme Activities and Bacterial Communities Impacted by Graphene and Its Oxides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9191-9199. [PMID: 28949519 DOI: 10.1021/acs.jafc.7b03646] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Graphene (GN) and graphene oxides (GOs) are novel carbon nanomaterial; they have been attracting much attention because of their excellent properties and are widely applied in many areas, including energy, electronics, biomedicine, environmental science, etc. With industrial production and consumption of GN/GO, they will inevitably enter the soil and water environments. GN/GO may directly cause certain harm to microorganisms and lead to ecological and environmental risks. GOs are GN derivatives with abundant oxygen-containing functional groups in their graphitic backbone. The structure and chemistry of GN show obvious differences compared to those of GO, which lead to the different environmental behaviors. In this study, four different types of soil (S1-S4) were employed to investigate the effect of GN and GO on soil enzymatic activity, microbial population, and bacterial community through pyrosequencing of 16S rRNA gene amplicons. The results showed that soil enzyme activity (invertase, protease, catalase, and urease) and microbial population (bacteria, actinomycetes, and fungi) changed after GN/GO release into soils. Soil microbial community species are more rich, and the diversity also increases after GO/GN application. The phylum of Proteobacteria increased at 90 days after treatment (DAT) after GN/GO application. The phylum of Chloroflexi occurred after GN application at 90 DAT in S1 soil and reached 4.6%. Proteobacteria was the most abundant phylum in S2, S3, and S4 soils; it ranged from 43.6 to 71.4% in S2 soil, from 45.6 to 73.7% in S3 soil, and from 38.1 to 56.7% in S4 soil. The most abundant genera were Bacillus (37.5-47.0%) and Lactococcus (28.0-39.0%) in S1 soil, Lysobacter and Flavobacterium in S2 soil, Pedobacter in S3 soil, and Massilia in S4 soil. The effect of GN and GO on the soil microbial community is time-dependent, and there are no significant differences between the samples at 10 and 90 DAT.
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Affiliation(s)
- Yan Rong
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center and ‡Laboratory of Applied Microbiology, School of Pharmaceutical Engineering and Life Science, Changzhou University , Changzhou, Jiangsu 213164, People's Republic of China
| | - Yi Wang
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center and ‡Laboratory of Applied Microbiology, School of Pharmaceutical Engineering and Life Science, Changzhou University , Changzhou, Jiangsu 213164, People's Republic of China
| | - Yina Guan
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center and ‡Laboratory of Applied Microbiology, School of Pharmaceutical Engineering and Life Science, Changzhou University , Changzhou, Jiangsu 213164, People's Republic of China
| | - Jiangtao Ma
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center and ‡Laboratory of Applied Microbiology, School of Pharmaceutical Engineering and Life Science, Changzhou University , Changzhou, Jiangsu 213164, People's Republic of China
| | - Zhiqiang Cai
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center and ‡Laboratory of Applied Microbiology, School of Pharmaceutical Engineering and Life Science, Changzhou University , Changzhou, Jiangsu 213164, People's Republic of China
| | - Guanghua Yang
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center and ‡Laboratory of Applied Microbiology, School of Pharmaceutical Engineering and Life Science, Changzhou University , Changzhou, Jiangsu 213164, People's Republic of China
| | - Xiyue Zhao
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center and ‡Laboratory of Applied Microbiology, School of Pharmaceutical Engineering and Life Science, Changzhou University , Changzhou, Jiangsu 213164, People's Republic of China
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33
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Collado S, Oulego P, Alonso S, Díaz M. Flow cytometric characterization of bacterial abundance and physiological status in a nitrifying-denitrifying activated sludge system treating landfill leachate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:21262-21271. [PMID: 28741203 DOI: 10.1007/s11356-017-9596-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
Flow cytometry has recently been presented as a research tool in the assessment of the viability/activity of activated sludge from municipal wastewater treatment plants, but it has not put in practice for industrial biotreatments yet. In this study, for the first time ever, the reliability and significance of the multiparameter flow cytometry applied to the biological nitrification-denitrification treatment of leachate have been evaluated. Using a double staining procedure (cFDA/PI), the viable, damaged, and dead subpopulations were determined, and the results were compared to those obtained with conventional methods, such as nitrogen and oxygen uptake rates or plate counting. Flow cytometry showed that viable cells represented approximately 47% of the total population, whereas active cells accounted for 90%. For both sludge from nitrification and denitrification processes, with less than 1% of them being also culturable in plate. Either flow cytometry or uptake rates revealed that health status of sludge remained constant throughout the biotreatment, which is consistent with the high recirculation rates. Under anaerobic starvation conditions, physiological status of sludge remained constant as well as specific oxygen and denitrification rates. Nevertheless, both the culturability in plate and the nitrification rate significantly decreased. These findings proved that multiparameter flow cytometry is a useful tool for the assessment of the viability and activity of sludge from a nitrification-denitrification biotreatment process. These results gathered all the bacterial communities in the sludge, so the decay in minority populations, such as nitrifying bacteria, requires the use of a complementary technique to evaluate specific activities.
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Affiliation(s)
- Sergio Collado
- Department of Chemical and Environmental Engineering, University of Oviedo, Oviedo, Spain
| | - Paula Oulego
- Department of Chemical and Environmental Engineering, University of Oviedo, Oviedo, Spain
| | - Saúl Alonso
- Department of Chemical and Environmental Engineering, University of Oviedo, Oviedo, Spain
| | - Mario Díaz
- Department of Chemical and Environmental Engineering, University of Oviedo, Oviedo, Spain.
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34
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Hu X, Kang W, Mu L. Aqueously Released Graphene Oxide Embedded in Epoxy Resin Exhibits Different Characteristics and Phytotoxicity of Chlorella vulgaris from the Pristine Form. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:5425-5433. [PMID: 28437605 DOI: 10.1021/acs.est.7b00361] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The environmental release of nanoparticles is attracting increasing attention. Graphene oxide (GO) embedded in epoxy resin (ER) is a popular composite that has been used in various fields, but the environmental release of GO-ER composites and the effects on organisms in the environment remain unknown. The present work found that GO-ER composites in water for 2-7 days resulted in the release of 0.3-2.1% GO-ER at nanoscale (2-3 nm thickness and approximately 70-130 nm lateral length). Interestingly, pristine GO quenched 30-45% hydroxyl and 12% nitroxide free radicals, whereas this capacity was not observed for the released particles from GO-ER. At environmentally relevant concentrations (μg/L), released GO-ER particles, but not GO or ER matrix, promoted algal reproduction by 34% and chlorophyll biosynthesis by 65-127% at 96 h. Released GO-ER entered algal cells and induced a slight increase in reactive oxygen species but did not elicit notable cell structure damage. The upregulated amino acids and phenylalanine metabolism, and the downregulated fatty acid biosynthesis contributed to algal growth promoted by released GO-ER. Previous studies of pristine nanoparticles were unable to reflect the environmental effects of released nanoparticles into the environment, and our research on the exposure-toxicological continuum adds important contributions to this field.
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Affiliation(s)
- Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University , Tianjin 300071, China
| | - Weilu Kang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University , Tianjin 300071, China
| | - Li Mu
- Institute of Agro-environmental Protection, Ministry of Agriculture, Tianjin 300191, China
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35
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Palmieri V, Carmela Lauriola M, Ciasca G, Conti C, De Spirito M, Papi M. The graphene oxide contradictory effects against human pathogens. NANOTECHNOLOGY 2017; 28:152001. [PMID: 28303804 DOI: 10.1088/1361-6528/aa6150] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Standing out as the new wonder bidimensional material, graphene oxide (GO) has aroused an exceptional interest in biomedical research by holding promise for being the antibacterial of future. First, GO possesses a specific interaction with microorganisms combined with a mild toxicity for human cells. Additionally, its antibacterial action seems to be directed to multiple targets in pathogens, causing both membranes mechanical injury and oxidative stress. Lastly, compared to other carbon materials, GO has easy and low-cost processing and is environment-friendly. This remarkable specificity and multi-targeting antibacterial activity come at a time when antibiotic resistance represents the major health challenge. Unfortunately, a comprehensive framework to understand how to effectively utilize this material against microorganisms is still lacking. In the last decade, several groups tried to define the mechanisms of interaction between GO flakes and pathogens but conflicting results have been reported. This review is focused on all the contradictions of GO antimicrobial properties in solution. Flake size, incubation protocol, time of exposure and species considered are examples of factors influencing results. These parameters will be summarized and analyzed with the aim of defining the causes of contradictions, to allow fast GO clinical application.
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Affiliation(s)
- Valentina Palmieri
- Physics Institute, Catholic University of Sacred Hearth, L. go Francesco Vito 1, 00168 Rome, Italy. Institute for Complex Systems, National Research Council (ISC-CNR), Via dei Taurini 19, 00185 Rome, Italy
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Zhang T, Liu J, Wang C, Leng X, Xiao Y, Fu L. Synthesis of graphene and related two-dimensional materials for bioelectronics devices. Biosens Bioelectron 2017; 89:28-42. [DOI: 10.1016/j.bios.2016.06.072] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 06/16/2016] [Accepted: 06/22/2016] [Indexed: 12/30/2022]
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Guo Z, Xie C, Zhang P, Zhang J, Wang G, He X, Ma Y, Zhao B, Zhang Z. Toxicity and transformation of graphene oxide and reduced graphene oxide in bacteria biofilm. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 580:1300-1308. [PMID: 28003049 DOI: 10.1016/j.scitotenv.2016.12.093] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 12/12/2016] [Accepted: 12/13/2016] [Indexed: 05/22/2023]
Abstract
Impact of graphene based material (GNMs) on bacteria biofilm has not been well understood yet. In this study, we compared the impact of graphene oxide (GO) and reduced graphene oxide (rGO) on biofilm formation and development in Luria-Bertani (LB) medium using Escherichia coli and Staphylococcus aureus as models. GO significantly enhanced the cell growth, biofilm formation, and biofilm development even up to a concentration of 500mg/L. In contrast, rGO (≥50mg/L) strongly inhibited cell growth and biofilm formation. However, the inhibitory effects of rGO (50mg/L and 100mg/L) were attenuated in the mature phase (>24h) and eliminated at 48h. GO at 250mg/L decreased the reactive oxygen species (ROS) levels in biofilm and extracellular region at mature phase. ROS levels were significantly increased by rGO at early phase, while they returned to the same levels as control at mature phase. These results suggest that oxidative stress contributed to the inhibitory effect of rGO on bacterial biofilm. We further found that supplement of extracellular polymeric substances (EPS) in the growth medium attenuated the inhibitory effect of rGO on the growth of developed biofilm. XPS results showed that rGO were oxidized to GO which can enhance the bacterial growth. We deduced that the elimination of the toxicity of rGO at mature phase was contributed by EPS protection and the oxidation of rGO. This study provides new insights into the interaction of GNMs with bacteria biofilm.
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Affiliation(s)
- Zhiling Guo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Changjian Xie
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Zhang
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
| | - Junzhe Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Guohua Wang
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao He
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yuhui Ma
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Bin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Zhiyong Zhang
- Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
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Hazeem LJ, Bououdina M, Dewailly E, Slomianny C, Barras A, Coffinier Y, Szunerits S, Boukherroub R. Toxicity effect of graphene oxide on growth and photosynthetic pigment of the marine alga Picochlorum sp. during different growth stages. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:4144-4152. [PMID: 27933501 DOI: 10.1007/s11356-016-8174-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 11/28/2016] [Indexed: 06/06/2023]
Abstract
Graphene oxide (GO), a recently discovered material, has been investigated for many applications in various fields. Thus, an immense awareness should be paid on the potential effects of the material on the environment as huge quantities of GO may get to the environment. Aquatic organisms, marine algae as an example, are exposed to such material when disposed to the environment. Accordingly, it is significant to assess the probable interactions of GO with algae in evaluating its possible environmental risks. In this study, we have examined the effect of different concentrations of GO on Picochlorum sp. during the different growth phases. The results showed that the toxicity of GO increases with increasing its concentration. The lowest concentration (0.5 mg L-1) was found to improve the algae growth and pigment content of Picochlorum sp. In contrast, higher GO concentrations had a negative consequence on the growth of algae and photosynthetic pigment concentration.
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Affiliation(s)
- Layla J Hazeem
- Department of Biology, College of Science, University of Bahrain, P.O. Box 32038, Zallaq, Kingdom of Bahrain.
| | - Mohamed Bououdina
- Department of Physics, College of Science, University of Bahrain, P.O. Box 32038, Zallaq, Kingdom of Bahrain
| | - Etienne Dewailly
- Laboratoire de Physiologie Cellulaire, INSERM U.1003, Université de Lille 1, Rue Paul Langevin, 59655, Villeneuve d'Ascq, France
| | - Christian Slomianny
- Laboratoire de Physiologie Cellulaire, INSERM U.1003, Université de Lille 1, Rue Paul Langevin, 59655, Villeneuve d'Ascq, France
| | - Alexandre Barras
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520-IEMN, F-59000, Lille, France
| | - Yannick Coffinier
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520-IEMN, F-59000, Lille, France
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520-IEMN, F-59000, Lille, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520-IEMN, F-59000, Lille, France
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Ou L, Song B, Liang H, Liu J, Feng X, Deng B, Sun T, Shao L. Toxicity of graphene-family nanoparticles: a general review of the origins and mechanisms. Part Fibre Toxicol 2016; 13:57. [PMID: 27799056 PMCID: PMC5088662 DOI: 10.1186/s12989-016-0168-y] [Citation(s) in RCA: 383] [Impact Index Per Article: 47.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 10/13/2016] [Indexed: 02/06/2023] Open
Abstract
Due to their unique physicochemical properties, graphene-family nanomaterials (GFNs) are widely used in many fields, especially in biomedical applications. Currently, many studies have investigated the biocompatibility and toxicity of GFNs in vivo and in intro. Generally, GFNs may exert different degrees of toxicity in animals or cell models by following with different administration routes and penetrating through physiological barriers, subsequently being distributed in tissues or located in cells, eventually being excreted out of the bodies. This review collects studies on the toxic effects of GFNs in several organs and cell models. We also point out that various factors determine the toxicity of GFNs including the lateral size, surface structure, functionalization, charge, impurities, aggregations, and corona effect ect. In addition, several typical mechanisms underlying GFN toxicity have been revealed, for instance, physical destruction, oxidative stress, DNA damage, inflammatory response, apoptosis, autophagy, and necrosis. In these mechanisms, (toll-like receptors-) TLR-, transforming growth factor β- (TGF-β-) and tumor necrosis factor-alpha (TNF-α) dependent-pathways are involved in the signalling pathway network, and oxidative stress plays a crucial role in these pathways. In this review, we summarize the available information on regulating factors and the mechanisms of GFNs toxicity, and propose some challenges and suggestions for further investigations of GFNs, with the aim of completing the toxicology mechanisms, and providing suggestions to improve the biological safety of GFNs and facilitate their wide application.
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Affiliation(s)
- Lingling Ou
- The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Bin Song
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Huimin Liang
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Jia Liu
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Xiaoli Feng
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Bin Deng
- The General Hospital of People’s Liberation Army, Beijing, China
| | - Ting Sun
- The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Longquan Shao
- Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
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Huang G, Guo H, Zhao J, Liu Y, Xing B. Effect of co-existing kaolinite and goethite on the aggregation of graphene oxide in the aquatic environment. WATER RESEARCH 2016; 102:313-320. [PMID: 27379727 DOI: 10.1016/j.watres.2016.06.050] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 06/20/2016] [Accepted: 06/24/2016] [Indexed: 06/06/2023]
Abstract
Broad applications of graphene oxide (GO) will result in the release of GO into aquatic environments, where clay minerals and metal (hydr)oxides are commonly present. Thereby the interactions between GO and a binary system containing clay minerals and metal (hydr)oxides can occur. We investigated the aggregation of GO with kaolinite and kaolinite-goethite associations (KGAs) in aquatic systems under different pHs, ionic strengths, and GO concentrations. GO suspension was unstable at low pHs, and the aggregation of GO occurred in the presence of KGA-4% and KGA-10% until pH 5 and 6, respectively. Kaolinite decreased the critical coagulation concentration (CCC) of GO at pH 5.5 from around 50 to 20 mM NaCl due to the reduced energy barrier. Heteroaggregation of GO with KGAs was extremely sensitive to ionic strength at pH 5.5, and the CCC of GO in the presence of KGA-10% increased from less than 1 mM NaCl to 5 mM NaCl with the increase of pH from 5.5 to 9. The heteroaggregation extent of GO with KGAs was enhanced firstly, then reduced with the increase of GO concentrations at pH 5.0, which is likely because KGA plates were more efficiently wrapped by large-size GO sheets with increasing GO concentrations. These findings are useful for understanding and predicting the fate of GO in the relatively complicated aquatic and soil environments where binary minerals co-exist.
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Affiliation(s)
- Guanxing Huang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, China; Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA
| | - Huiyuan Guo
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA
| | - Jian Zhao
- Institute of Costal Environmental Pollution Control, and Ministry of Education Key Laboratory of Marine Environment and Ecology, Ocean University of China, Qingdao, 266100, China.
| | - Yonghong Liu
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA; Department of Chemistry, College of Science, Huazhong Agricultural University, Wuhan, 430070, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, MA, 01003, USA.
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