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Potbhare AK, Yerpude S, Daddemal-Chaudhary AR, Lambat A, Mondal A, Dadure KM, Rai AR, Abdala A, Chaudhary RG. Catharanthus roseus-mediated CuAl 2O 4 Nanocomposites for Evaluation of Killing Kinetics. Chemosphere 2024:142369. [PMID: 38761825 DOI: 10.1016/j.chemosphere.2024.142369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 05/06/2024] [Accepted: 05/16/2024] [Indexed: 05/20/2024]
Abstract
The present article portrayed on the killing kinetic of human pathogenic bacteria using bioinspired mesoporous CuAl2O4 nanocomposites (NCs). The NCs was fabricated using leaf extract of medicinal plant Catharanthus roseus (CR) as a green reducer and stabilizer. As bio-fabricated material was calcined at 800 °C and characterized by several analytical techniques like X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Ultraviolet-Visible Diffuse Reflectance Spectroscopy (UV-DRS), Energy Dispersive X-Ray Spectroscopy (EDS), X-Ray Photoelectron Spectroscopy (XPS), Raman, Brunauer-Emmett-Teller (BET), Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM) to authenticate its structure, phase, chemical bonding, chemical state, size and morphology behaviors. XRD and TEM revealed a reduced crystallite and nanoscale sizes of biosynthesized NCs. Moreover, XRD study exposed a cubic-structure of material, while transmission electron microscopy rendered an average particles size in range 10-15 nm. However, BET profile advocates a mesoporous nature of the particles. An effective biological molecular docking modulation assessed by substituting natural inhibitor by bioinspired NCs, while the protein PDB ID 4Z8D FabH as a receptor site for the present investigation. After assessment of molecular docking examination, the antibacterial activity of bioinspired NCs were performed against Staphylococcus aureus, Bacillus subtillis, Klebsiella pneumoniae and Escherichia coli using agar-well method. The broth culture method was employed on different pathogenic strains by kinetic growth assays and colony forming unit.
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Affiliation(s)
- Ajay K Potbhare
- Department of Chemistry, S. K. Porwal College of Arts and Science and Commerce, Kamptee-441001, India
| | - Sachin Yerpude
- Department of Microbiology, S. K. Porwal College of Arts and Science and Commerce, Kamptee-441001, India
| | - Ankita R Daddemal-Chaudhary
- Lady Amritabai Daga College for Women of Arts, Commerce and Science, Nagpur-440010, India; Post Graduate Teaching Department of Botany, RTM Nagpur University, Nagpur-440033, India
| | - Ashish Lambat
- Department of Biology, Sevadal Mahila Mahavidyalaya, Nagpur, India
| | - Aniruddha Mondal
- Department of Chemistry, S. K. Porwal College of Arts and Science and Commerce, Kamptee-441001, India; Division of Materials Science, Lulea University of Technology, Lulea, 97187, Sweden
| | | | - Alok R Rai
- Department of Microbiology, S. K. Porwal College of Arts and Science and Commerce, Kamptee-441001, India.
| | - Ahmed Abdala
- Chemical Engineering Program, Texas A&M University at Qatar, Doha, Qatar
| | - Ratiram G Chaudhary
- Department of Chemistry, S. K. Porwal College of Arts and Science and Commerce, Kamptee-441001, India.
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Zhang L, Zheng Q, Ge X, Chan H, Zhang G, Fang K, Liang Y. Preparation of Nylon-6 micro-nanofiber composite membranes with 3D uniform gradient structure for high-efficiency air filtration of ultrafine particles. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Yang J, Dong X, Li B, Chen T, Yu B, Wang X, Dou X, Peng B, Hu Q. Poria cocos polysaccharide-functionalized graphene oxide nanosheet induces efficient cancer immunotherapy in mice. Front Bioeng Biotechnol 2023; 10:1050077. [PMID: 36727039 PMCID: PMC9885324 DOI: 10.3389/fbioe.2022.1050077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/27/2022] [Indexed: 01/18/2023] Open
Abstract
Introduction: Tumor vaccines that induce robust humoral and cellular immune responses have attracted tremendous interest for cancer immunotherapy. Despite the tremendous potential of tumor vaccines as an effective approach for cancer treatment and prevention, a major challenge in achieving sustained antitumor immunity is inefficient antigen delivery to secondary lymphoid organs, even with adjuvant aid. Methods: Herein, we present antigen/adjuvant integrated nanocomplexes termed nsGO/PCP/OVA by employing graphene oxide nanosheet (nsGO) as antigen nanocarriers loaded with model antigen ovalbumin (OVA) and adjuvant, Poria cocos polysaccharides (PCP). We evaluated the efficacy of nsGO/PCP/OVA in activating antigen-specific humoral as well as cellular immune responses and consequent tumor prevention and rejection in vivo. Results: The optimally formed nsGO/PCP/OVA was approximately 120-150 nm in diameter with a uniform size distribution. Nanoparticles can be effectively engulfed by dendritic cells (DCs) through receptor-mediated endocytosis, induced the maturation of DCs and improved the delivery efficiency both in vitro and in vivo. The nsGO/PCP/OVA nanoparticles also induced a significant enhancement of OVA antigen-specific Th1 and Th2 immune responses in vivo. In addition, vaccination with nsGO/PCP/OVA not only significantly suppressed tumor growth in prophylactic treatments, but also achieved a therapeutic effect in inhibiting the growth of already-established tumors. Conclusion: Therefore, this potent nanovaccine platform with nanocarrier nsGO and PCP as adjuvants provides a promising strategy for boosting anti-tumor immunity for cancer immunotherapy.
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Affiliation(s)
- Jinning Yang
- The Faculty of Environment and Life, Beijing University of Technology, Beijing, China,Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
| | - Xiaoxiao Dong
- Institute of Medical Biotechnology, Chinese Academy of Medical Sciences, Beijing, China
| | - Boye Li
- Civil Aviation Medicine Center, Civil Aviation Administration of China, Beijing, China
| | - Tian Chen
- The Faculty of Environment and Life, Beijing University of Technology, Beijing, China,Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
| | - Boyang Yu
- The Faculty of Environment and Life, Beijing University of Technology, Beijing, China,Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China
| | - Xiaoli Wang
- The Faculty of Environment and Life, Beijing University of Technology, Beijing, China,Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China,*Correspondence: Xiaoli Wang, ; Xiangnan Dou, ; Bo Peng, ; Qin Hu,
| | - Xiangnan Dou
- The Faculty of Environment and Life, Beijing University of Technology, Beijing, China,*Correspondence: Xiaoli Wang, ; Xiangnan Dou, ; Bo Peng, ; Qin Hu,
| | - Bo Peng
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China,*Correspondence: Xiaoli Wang, ; Xiangnan Dou, ; Bo Peng, ; Qin Hu,
| | - Qin Hu
- The Faculty of Environment and Life, Beijing University of Technology, Beijing, China,Beijing International Science and Technology Cooperation Base of Antivirus Drug, Beijing University of Technology, Beijing, China,*Correspondence: Xiaoli Wang, ; Xiangnan Dou, ; Bo Peng, ; Qin Hu,
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Najafi F, Ahmadi H, Maghsoumi A, Huma K, Amini A, Azimi L, Karimi A, Bayat M, Naseri N. Size-dependent molecular interaction of nontraditional 2D antibiotics with Staphylococcus aureus. Biomed Mater 2022; 18. [PMID: 36541547 DOI: 10.1088/1748-605x/aca500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/22/2022] [Indexed: 11/23/2022]
Abstract
The application of nanomaterials for their antibacterial properties is the subject of many studies due to antibiotic resistance of pathogen bacteria and the necessity of omitting them from food and water resources. Graphene oxide (GO) is one of the most popular candidates for antibacterial application. However, the optimum condition for such an effect is not yet clear for practical purposes. To shed light on how GO and bacteria interaction depends on size, a wide range of GO flake sizes from hundreds of µm2going down to nano-scale as low as 10 N m2was produced. In anin-vitrosystematic study to inhibitStaphylococcus aureusgrowth, the correlation between GO flake size, thickness, functional group density, and antibacterial activity was investigated. The GO suspension with the average size of 0.05 µm2, in the order of the size of the bacteria itself, had the best bacteriostatic effect onS. aureuswith the minimum inhibitory concentration value of 8 μg ml-1, well within the acceptable range for practical use. The bacteriostatic effect was measured to be a 76.2% reduction of the colony count over 2 h of incubation and the mechanism of action was the wrapping and isolation of cells from the growth environment. Furthermore,in-vivoanimal studies revealed that 16 μg ml-1of the optimum GO has efficient antibacterial performance against the methicillin-resistant strains of the bacteria with an enhanced wound healing rate and tensiometrial parameters which is important for realized targets.
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Affiliation(s)
- F Najafi
- Department of Physics, Sharif University of Technology, PO Box, Tehran 11365-11155, Iran
| | - H Ahmadi
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - A Maghsoumi
- Department of Physics, Sharif University of Technology, PO Box, Tehran 11365-11155, Iran
| | - K Huma
- Department of Physics, Sharif University of Technology, PO Box, Tehran 11365-11155, Iran
| | - A Amini
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - L Azimi
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - A Karimi
- Pediatric Infections Research Centre, Research Institute for Children's Health, Shahid Beheshti University of Medical Science, Tehran, Iran
| | - M Bayat
- Department of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Price Institute of Surgical Research, University of Louisville, and Noveratech LLC, Louisville, KY, United States of America
| | - N Naseri
- Department of Physics, Sharif University of Technology, PO Box, Tehran 11365-11155, Iran
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Menezes IR, Sakai T, Hattori Y, Kaneko K. Effect of preheating temperature on adsorption of N2 and Ar on graphene oxide. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.140091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ng IMJ, Shamsi S. Graphene Oxide (GO): A Promising Nanomaterial against Infectious Diseases Caused by Multidrug-Resistant Bacteria. Int J Mol Sci 2022; 23:ijms23169096. [PMID: 36012361 PMCID: PMC9408893 DOI: 10.3390/ijms23169096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/11/2022] [Accepted: 07/17/2022] [Indexed: 11/16/2022] Open
Abstract
Infectious diseases are major threat due to it being the main cause of enormous morbidity and mortality in the world. Multidrug-resistant (MDR) bacteria put an additional burden of infection leading to inferior treatment by the antibiotics of the latest generations. The emergence and spread of MDR bacteria (so-called “superbugs”), due to mutations in the bacteria and overuse of antibiotics, should be considered a serious concern. Recently, the rapid advancement of nanoscience and nanotechnology has produced several antimicrobial nanoparticles. It has been suggested that nanoparticles rely on very different mechanisms of antibacterial activity when compared to antibiotics. Graphene-based nanomaterials are fast emerging as “two-dimensional wonder materials” due to their unique structure and excellent mechanical, optical and electrical properties and have been exploited in electronics and other fields. Emerging trends show that their exceptional properties can be exploited for biomedical applications, especially in drug delivery and tissue engineering. Moreover, graphene derivatives were found to have in vitro antibacterial properties. In the recent years, there have been many studies demonstrating the antibacterial effects of GO on various types of bacteria. In this review article, we will be focusing on the aforementioned studies, focusing on the mechanisms, difference between the studies, limitations and future directions.
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Cheng X, Zhang J, Sha Y, Xu M, Duan R, Su Z, Li J, Wang Y, Hu J, Guan B, Han B. Periodically nanoporous hydrogen-bonded organic frameworks for high performance photocatalysis. Nanoscale 2022; 14:9762-9770. [PMID: 35766869 DOI: 10.1039/d2nr02585j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The development of highly catalytic hydrogen-bonded organic frameworks (HOFs) is of great importance, but remains challenging. Herein, we demonstrate the fabrication of a periodically nanoporous HOF for high performance photocatalysis. Compared with the conventional microporous HOFs, the nanoporous HOF architecture has a larger number of free carboxyl groups on the surface and presents greatly improved photoelectrochemical properties. It exhibits high catalytic activity for the photo-oxidative coupling of amines under mild conditions such as air atmosphere and room temperature and without any co-catalysts, sacrificial reagents or photosensitizers. The relationship between the structure, properties and catalytic performance of the nanoporous HOF was studied by experimental and theoretical investigations. It shows that such a HOF structure facilitates reactant adsorption and O2 dissociation, thus promoting the oxidative coupling reaction. This work provides a new way for improving the catalytic performance of a single HOF.
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Affiliation(s)
- Xiuyan Cheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Jianling Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Yufei Sha
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Mingzhao Xu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Ran Duan
- CAS Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Zhuizhui Su
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Jialiang Li
- Beijing Synchrotron Radiation Facility (BSRF), Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Yanyue Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Jingyang Hu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
| | - Bo Guan
- Center for Physicochemical Analysis and Measurement, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, P.R.China
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Eivazzadeh-Keihan R, Asgharnasl S, Moghim Aliabadi HA, Tahmasebi B, Radinekiyan F, Maleki A, Bahreinizad H, Mahdavi M, Alavijeh MS, Saber R, Lanceros-Méndez S, Shalan AE. Magnetic graphene oxide–lignin nanobiocomposite: a novel, eco-friendly and stable nanostructure suitable for hyperthermia in cancer therapy. RSC Adv 2022; 12:3593-3601. [PMID: 35425373 PMCID: PMC8979318 DOI: 10.1039/d1ra08640e] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 12/27/2021] [Indexed: 01/10/2023] Open
Abstract
A novel nanobiocomposite was designed and synthesized under mild conditions to evaluate its potential in hyperthermia therapy.
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Affiliation(s)
- Reza Eivazzadeh-Keihan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Somayeh Asgharnasl
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Hooman Aghamirza Moghim Aliabadi
- Protein Chemistry Laboratory, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
- Advanced Chemistry Studies Lab, Department of Chemistry, K. N. Toosi University of Technology, Tehran, Iran
| | - Behnam Tahmasebi
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Fateme Radinekiyan
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Hossein Bahreinizad
- Mechanical Engineering Department, Sahand University of Technology, Tabriz, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Reza Saber
- Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Senentxu Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, Leioa 48940, Spain
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Ahmed Esmail Shalan
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, Leioa 48940, Spain
- Central Metallurgical Research and Development Institute (CMRDI), P. O. Box 87, Helwan, Cairo 11421, Egypt
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Anil AG, Swaraj S, Subramanian S, Ramamurthy PC. Analysis of Cr(VI) Bioremediation by Citrobacter freundii Using Synchrotron Soft X-ray Scanning Transmission X-ray Microscopy. QuBS 2021; 5:28. [DOI: 10.3390/qubs5040028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Scanning transmission X-ray microscopy (STXM) was utilized for analysing the bioremediation of Cr(VI) by Citrobacter freundii, a species of gram-negative bacteria. The biosorption and bioreduction processes were analysed by the chemical mapping of cells biosorbed at different concentrations of Cr(VI). STXM spectromicroscopy images were recorded at O K-edge and Cr L-edge. A thorough analysis of the X-ray absorption features corresponding to different oxidation states of Cr in the biosorbed cell indicated the coexistence of Cr(III) and Cr(VI) at higher concentrations. This signifies the presence of partially reduced Cr(VI) in addition to biosorbed Cr(VI). In addition, the Cr(III) signal is intense compared with Cr(VI) at different regions of the cell indicating excess of reduced Cr. Speciation of adsorbed Cr was analysed for the spectral features of biosorbed cell and comparison with Cr standards. Analysis of absorption onset, L3/L2 ratio and absorption fine structure concludes that adsorbed Cr is predominantly present as Cr(III) hydroxide or oxyhydroxide. The evolution of absorption features in the duration of biosorption process was also studied. These time lapse studies depict the gradual decrement in Cr(VI) signal as biosorption proceeds. A strong evidence of interaction of Cr with the cell material was also observed. The obtained results provide insights into the biosorption process and chemical speciation of Cr on the cells.
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Abo El-yazeed W, El-hakam S, Salah A, Ibrahim AA. Fabrication and characterization of reduced graphene-BiVO4 nanocomposites for enhancing visible light photocatalytic and antibacterial activity. J Photochem Photobiol A Chem 2021; 417:113362. [DOI: 10.1016/j.jphotochem.2021.113362] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Abstract
Water-based elastomers (WBEs) are polymeric elastomers in aqueous systems. WBEs have recently continued to gain wide acceptability by both academia and industry due to their remarkable environmental and occupational safety friendly nature, as a non-toxic elastomeric dispersion with low-to-zero volatile organic compound (VOC) emission. However, their inherent poor mechanical and thermal properties remain a drawback to these sets of elastomers. Hence, nano-fillers such as graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoplatelets (GNPs) are being employed for the reinforcement and enhancement of this set of elastomers. This work is geared towards a critical review and summation of the state-of-the-art developments of graphene enhanced water-based elastomer composites (G-WBEC), including graphene and composite production processes, properties, characterisation techniques and potential commercial applications. The dominant production techniques, such as emulsion mixing and in situ polymerisation processes, which include Pickering emulsion, mini-emulsion and micro-emulsion, as well as ball-milling approach, are systematically evaluated. Details of the account of mechanical properties, electrical conductivity, thermal stability and thermal conductivity enhancements, as well as multifunctional properties of G-WBEC are discussed, with further elaboration on the structure-property relationship effects (such as dispersion and filler-matrix interface) through effective and non-destructive characterisation tools like Raman and XRD, among others. The paper also evaluates details of the current application attempts and potential commercial opportunities for G-WBEC utilisation in aerospace, automotive, oil and gas, biomedicals, textiles, sensors, electronics, solar energy, and thermal management.
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Affiliation(s)
- Christian N Nwosu
- Department of Materials, The University of Manchester, Manchester M13 9PL, UK.
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Anbu P. Chemical synthesis of NiFe 2 O 4 /NG/cellulose nanocomposite and its antibacterial potential against bacterial pathogens. Biotechnol Appl Biochem 2021; 69:867-875. [PMID: 33811671 DOI: 10.1002/bab.2157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 03/23/2021] [Indexed: 11/09/2022]
Abstract
In this work, a nickel ferrite (NiFe2 O4 )/nitrogen-doped-graphene (NG)/cellulose composite (NiFe2 O4 /NG/cellulose) was successfully synthesized through a facile chemical route, and its antibacterial potential was evaluated. The synthesized NiFe2 O4 /NG/cellulose composite was characterized by performing morphological and structural analyses. The results showed the successful formation of NiFe2 O4 -nanoparticles with a spherical shape and a size ranging from 15 to 200 nm. Energy-dispersive X-ray results confirmed the presence of various elements (carbon, nitrogen, oxygen, iron, and nickel) in the reaction mixture. The X-ray diffraction pattern showed the face-centered-cubic nature of the particles. In addition, antibacterial activity against Escherichia coli (Gram-negative bacteria) and Bacillus subtilis (Gram-positive bacteria) was evaluated with different concentrations of NiFe2 O4 /NG/cellulose composite (0-50 μg/mL). Inhibitory activity increased with increasing concentrations of NiFe2 O4 /NG/cellulose. The composite's inhibitory activity was slightly higher in E. coli than in B. subtilis due to the differing nature of their cell wall structures. Overall, the chemically synthesized NiFe2 O4 /NG/cellulose composite has the potential as an efficient antibacterial agent for controlling the growth of pathogenic bacteria.
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Affiliation(s)
- Periasamy Anbu
- Department of Biological Engineering, Inha University, Incheon, South Korea
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Seifi T, Kamali AR. Anti-pathogenic activity of graphene nanomaterials: A review. Colloids Surf B Biointerfaces 2020; 199:111509. [PMID: 33340933 DOI: 10.1016/j.colsurfb.2020.111509] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/26/2020] [Accepted: 11/29/2020] [Indexed: 12/12/2022]
Abstract
Graphene and its derivatives are promising candidates for a variety of biological applications, among which, their anti-pathogenic properties are highly attractive due to the outstanding physicochemical characteristics of these novel nanomaterials. The antibacterial, antiviral and antifungal performances of graphene are increasingly becoming more important due to the pathogen's resistance to existing drugs. Despite this, the factors influencing the antibacterial activity of graphene nanomaterials, and consequently, the mechanisms involved are still controversial. This review aims to systematically summarize the literature, discussing various factors that affect the antibacterial performance of graphene materials, including the shape, size, functional group and the electrical conductivity of graphene flakes, as well as the concentration, contact time and the pH value of the graphene suspensions used in related microbial tests. We discuss the possible surface and edge interactions between bacterial cells and graphene nanomaterials, which cause antibacterial effects such as membrane/oxidative/photothermal stresses, charge transfer, entrapment and self-killing phenomena. This article reviews the anti-pathogenic activity of graphene nanomaterials, comprising their antibacterial, antiviral, antifungal and biofilm-forming performance, with an emphasis on the antibacterial mechanisms involved.
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Affiliation(s)
- Tahereh Seifi
- Energy and Environmental Materials Research Centre (E(2)MC), School of Metallurgy, Northeastern University, Shenyang, 110819, China
| | - Ali Reza Kamali
- Energy and Environmental Materials Research Centre (E(2)MC), School of Metallurgy, Northeastern University, Shenyang, 110819, China.
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Cao W, He L, Cao W, Huang X, Jia K, Dai J. Recent progress of graphene oxide as a potential vaccine carrier and adjuvant. Acta Biomater 2020; 112:14-28. [PMID: 32531395 DOI: 10.1016/j.actbio.2020.06.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/28/2020] [Accepted: 06/03/2020] [Indexed: 02/07/2023]
Abstract
Vaccine is one of the most effective strategies for preventing and controlling infectious diseases and some noninfectious diseases, especially cancers. Adjuvants and carriers have been appropriately added to the vaccine formulation to improve the immunogenicity of the antigen and induce long-lasting immunity. However, there is an urgent need to develop new all-purpose adjuvants because some adjuvants approved for human use have limited functionality. Graphene oxide (GO), widely employed for the delivery of biomolecules, excels in loading and delivering antigen and shows the potentiality of activating the immune system. However, GO aggregates in biological liquid and induces cell death, and it also exhibits poor biosolubility and biocompatibility. To address these limitations, various surface modification protocols have been employed to integrate aqueous compatible substances with GO to effectively improve its biocompatibility. More importantly, these modifications render functionalized-GO with superior properties as both carriers and adjuvants. Herein, the recent progress of physicochemical properties and surface modification strategies of GO for its application as both carriers and adjuvants is reviewed. STATEMENT OF SIGNIFICANCE: Due to its unique physicochemical properties, graphene oxide is widely employed in medicine for purposes of photothermal treatment of cancer, drug delivery, antibacterial therapy, and medical imaging. Our work describes the surface modification of graphene oxide and for the first time summarizes that functionalized graphene oxide serves as a vaccine carrier and shows significant adjuvant activity in activating cellular and humoral immunity. In the future, it is expected to be introduced into vaccine research to improve the efficacy of vaccines.
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Abstract
We review oxygen K-edge X-ray absorption spectra of both molecules and solids. We start with an overview of the main experimental aspects of oxygen K-edge X-ray absorption measurements including X-ray sources, monochromators, and detection schemes. Many recent oxygen K-edge studies combine X-ray absorption with time and spatially resolved measurements and/or operando conditions. The main theoretical and conceptual approximations for the simulation of oxygen K-edges are discussed in the Theory section. We subsequently discuss oxygen atoms and ions, binary molecules, water, and larger molecules containing oxygen, including biomolecular systems. The largest part of the review deals with the experimental results for solid oxides, starting from s- and p-electron oxides. Examples of theoretical simulations for these oxides are introduced in order to show how accurate a DFT description can be in the case of s and p electron overlap. We discuss the general analysis of the 3d transition metal oxides including discussions of the crystal field effect and the effects and trends in oxidation state and covalency. In addition to the general concepts, we give a systematic overview of the oxygen K-edges element by element, for the s-, p-, d-, and f-electron systems.
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Affiliation(s)
- Federica Frati
- Inorganic
chemistry and catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584CG Utrecht, The Netherlands
| | | | - Frank M. F. de Groot
- Inorganic
chemistry and catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584CG Utrecht, The Netherlands
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Wernke G, Shimabuku-Biadola QL, Dos Santos TRT, Silva MF, Fagundes-Klen MR, Bergamasco R. Adsorption of cephalexin in aqueous media by graphene oxide: kinetics, isotherm, and thermodynamics. Environ Sci Pollut Res Int 2020; 27:4725-4736. [PMID: 31845249 DOI: 10.1007/s11356-019-07146-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/21/2019] [Indexed: 05/27/2023]
Abstract
The present study proposes the synthesis and characterization of graphene oxide (GO) and its application in the adsorption of the antibiotic cephalexin (CFX) in aqueous solution. The characterization of graphene oxide was obtained by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and zeta potential. The influence of pH on the batch adsorption process was investigated by analysing adsorption equilibrium isotherms and adsorption kinetics. The images obtained by SEM and TEM presented the typical morphology attributed to GO sheets. The kinetic adsorption tests showed that equilibrium was reached in 420 min, and an adsorption capacity of 164 mg g-1 was obtained. The models that best fit the experimental data were pseudo-second as well as the Langmuir isotherm. Therefore, GO was effective for removing the CFX antibiotic from aqueous solution by using a batch adsorption process.
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Affiliation(s)
- Gessica Wernke
- Department of Chemical Engineering, State University of Maringá, Avenida Colombo, 5790. Bloco D90, 87020-900, Maringá, Paraná, Brazil
| | - Quelen Leticia Shimabuku-Biadola
- Department of Chemical Engineering, State University of Maringá, Avenida Colombo, 5790. Bloco D90, 87020-900, Maringá, Paraná, Brazil.
| | - Tássia Rhuna Tonial Dos Santos
- Department of Chemical Engineering, State University of Maringá, Avenida Colombo, 5790. Bloco D90, 87020-900, Maringá, Paraná, Brazil
| | - Marcela Fernandes Silva
- Department of Chemical Engineering, State University of Maringá, Avenida Colombo, 5790. Bloco D90, 87020-900, Maringá, Paraná, Brazil
| | - Marcia Regina Fagundes-Klen
- Department of Chemical Engineering, State University of West Parana, Street of Faculdade, 645, 85903-000, Toledo, Paraná, Brazil
| | - Rosângela Bergamasco
- Department of Chemical Engineering, State University of Maringá, Avenida Colombo, 5790. Bloco D90, 87020-900, Maringá, Paraná, Brazil
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Song S, Zhao T, Qiu F, Zhu W, Wu Y, Ju Y, Dong L. RETRACTED: Silver nanoparticle decorated halloysite nanotube for efficient antibacterial application. Chem Phys 2019; 521:51-4. [DOI: 10.1016/j.chemphys.2019.01.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Li X, Sun J, Che Y, Lv Y, Liu F. Antibacterial properties of chitosan chloride-graphene oxide composites modified quartz sand filter media in water treatment. Int J Biol Macromol 2019; 121:760-773. [DOI: 10.1016/j.ijbiomac.2018.10.123] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 10/06/2018] [Accepted: 10/15/2018] [Indexed: 12/11/2022]
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