1
|
Deng B, Maaloul R, Nowak S, Sivry Y, Yéprémian C, Ammar S, Mammeri F, Brayner R. Aquatic Fate and Ecotoxicology Effect of ZnS:Mn Quantum Dots on Chlorella vulgaris in Fresh Water. J Xenobiot 2024; 14:467-483. [PMID: 38651378 PMCID: PMC11036285 DOI: 10.3390/jox14020028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/13/2024] [Accepted: 03/22/2024] [Indexed: 04/25/2024] Open
Abstract
With the increasing integration of nanomaterials into daily life, the potential ecotoxicological impacts of nanoparticles (NPs) have attracted increased attention from the scientific community. This study assessed the ecotoxicity of ZnS quantum dots (QDs) doped with varying molar concentrations of Mn2+ on Chlorella vulgaris. The ZnS:Mn QDs were synthesized using the polyol method. The size of the ZnS:Mn QDs ranged from approximately 1.1 nm to 2 nm, while the aggregation size in Seine River water was 341 nm at pH 6 and 8. The presence of ZnS:Mn (10%) NPs exhibited profound toxicity to Chlorella vulgaris, with immediate reductions in viability (survival cells) from 71%, 60% to 51%, 52% in BG11 and Seine River water, respectively, at a concentration of 100 mg L-1 of ZnS:Mn (10%) NPs. Additionally, the ATP content in Chlorella vulgaris significantly decreased in Seine River water (by 20%) after 3 h of exposure to ZnS:Mn (10%) NPs. Concurrently, SOD activity significantly increased in Seine River water, indicating that the ZnS:Mn (10%) NPs induced ROS production and triggered an oxidative stress response in microalgae cells.
Collapse
Affiliation(s)
- Bingbing Deng
- ITODYS, Université Paris Cité, CNRS, F-75013 Paris, France (S.A.)
| | - Rania Maaloul
- ITODYS, Université Paris Cité, CNRS, F-75013 Paris, France (S.A.)
| | - Sophie Nowak
- ITODYS, Université Paris Cité, CNRS, F-75013 Paris, France (S.A.)
| | - Yann Sivry
- IPGP, Université Paris Cité, CNRS, F-75005 Paris, France
| | - Claude Yéprémian
- CNRS, Molécules de Communication & Adaptation des Microorganismes MCAM, Museum National d’Histoire Naturelle, F-75005 Paris, France;
| | - Souad Ammar
- ITODYS, Université Paris Cité, CNRS, F-75013 Paris, France (S.A.)
| | - Fayna Mammeri
- ITODYS, Université Paris Cité, CNRS, F-75013 Paris, France (S.A.)
| | - Roberta Brayner
- ITODYS, Université Paris Cité, CNRS, F-75013 Paris, France (S.A.)
| |
Collapse
|
2
|
Nunes GP, Delbem ACB, Gonçalves FMC, Rischka K, de Camargo ER, Sousa YTCS, Danelon M. Biomineralization and remineralizing potential of toothpastes containing nanosized β-calcium glycerophosphate: an in vitro study. Odontology 2024:10.1007/s10266-024-00927-z. [PMID: 38498244 DOI: 10.1007/s10266-024-00927-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 03/01/2024] [Indexed: 03/20/2024]
Abstract
To evaluate the effect of 1100 ppm F toothpastes supplemented with micrometric or nanosized β-CaGP (β-CaGPm/β-CaGPn) on artificial enamel remineralization, using a pH cycling model. Enamel blocks with artificial caries were randomly allocated into ten groups (n = 10), according to the toothpastes: without fluoride/β-CaGPm/β-CaGPn (negative control); 1100 ppm F (1100F); 1100F plus 0.125%, 0.25%, 0.5%, and 1.0% of β-CaGPm or β-CaGPn. The blocks were treated 2×/day with slurries of toothpastes. After pH cycling, the percentage of surface hardness recovery (%SHR); integrated loss of subsurface hardness (ΔKHN); integrated mineral loss (ΔIMR); fluoride (F), calcium (Ca), and phosphorus (P) concentrations in the enamel; polydispersity index (PdI); and zeta potential (Zp) were determined. The data were analyzed by ANOVA (p < 0.001). For Zp/PdI, no significance was observed when comparing the means (p > 0.001). The treatment with 1100F-0.25%β-CaGPn led to %SHR ∼57 higher when compared to the 1100F group (p < 0.001). The lowest ΔKHN was observed for the 1100F-0.25%β-CaGPn group (p < 0.001). The ΔIMR was lower (∼201%) for the 1100F-0.25%β-CaGPn when compared to 1100F (p < 0.001). The association of β-CaGPm and β-CaGPn to 1100F did not influence its F concentration (p > 0.001). The highest increase in Ca and P was observed for 1100F-0.25%β-CaGPn (p < 0.001). The addition of 0.25%β-CaGPn to 1100F toothpaste was able to promote an additional remineralizing effect of artificial caries lesions.
Collapse
Affiliation(s)
- Gabriel Pereira Nunes
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil
| | - Alberto Carlos Botazzo Delbem
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil
| | - Francyenne Maira Castro Gonçalves
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil
| | - Klaus Rischka
- Adhesive Bonding Technology and Surfaces, Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Wiener Straße 12, 28359, Bremen, Germany
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas-UNICAMP, Piracicaba, 13414-903, Brazil
| | - Emerson Rodrigues de Camargo
- LIEC-Department of Chemistry, Federal University of São Carlos (UFSCar), São Carlos, São Paulo, 13565-905, Brazil
| | | | - Marcelle Danelon
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Rua José Bonifácio 1193, Araçatuba, SP, Cep 16015-050, Brazil.
- School of Dentistry, University of Ribeirão Preto-UNAERP, Ribeirão Preto, SP, Cep 14096-900, Brazil.
| |
Collapse
|
3
|
Kaur H, Kalia A, Manchanda P. Elucidating the effect of TiO 2 nanoparticles on mung bean rhizobia via in vitro assay: Influence on growth, morphology, and plant growth promoting traits. J Basic Microbiol 2024; 64:e2300306. [PMID: 38183339 DOI: 10.1002/jobm.202300306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 12/10/2023] [Accepted: 12/18/2023] [Indexed: 01/08/2024]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) are among the most commonly used nanomaterials and are most likely to end up in soil. Therefore, it is pertinent to study the interaction of TiO2 NPs with soil microorganisms. The present in vitro broth study evaluates the impacts of low-dose treatments (0, 1.0, 5.0, 10.0, 20.0, and 40.0 mg L-1 ) of TiO2 NPs on cell viability, morphology, and plant growth promoting (PGP) traits of rhizobia isolated from mung bean root nodule. Two types of TiO2 NPs, that is, mixture of anatase and rutile, and anatase alone were used in the study. These TiO2 NPs were supplemented in broth along with a multifunctional isolate (Bradyrhizobium sp.) and two reference cultures. The exposure of TiO2 (anatase+rutile) NPs at low concentrations (less than 20.0 mg L-1 ) enhanced the cell growth, and total soluble protein content, besides improving the phosphate solubilization, Indole-3-acetic acid (IAA) production, siderophore, and gibberellic acid production. The TiO2 (anatase) NPs enhanced exopolysaccharide (EPS) production by the test rhizobial cultures. The radical scavenging assay was performed to reveal the mode of action of the nano-TiO2 particles. The study revealed higher reactive oxygen species (ROS) generation by the TiO2 (anatase) NPs as compared with TiO2 (anatase+rutile) NPs. Exposure to TiO2 NPs also altered the morphology of rhizobial cells. The findings suggest that TiO2 NPs could act as promoters of PGP traits of PGP bacteria when applied at appropriate lower doses.
Collapse
Affiliation(s)
- Harleen Kaur
- Department of Microbiology, College of Basic Sciences and Humanities, Punjab Agricultural University, Ludhiana, India
| | - Anu Kalia
- Electron Microscopy and Nanoscience Laboratory, Department of Soil Science, College of Agriculture, Punjab Agricultural University, Ludhiana, India
| | - Pooja Manchanda
- School of Agricultural Biotechnology, College of Agriculture, Punjab Agricultural University, Ludhiana, India
| |
Collapse
|
4
|
Thakur N, Thakur N, Kumar A, Thakur VK, Kalia S, Arya V, Kumar A, Kumar S, Kyzas GZ. A critical review on the recent trends of photocatalytic, antibacterial, antioxidant and nanohybrid applications of anatase and rutile TiO2 nanoparticles. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169815. [PMID: 38184262 DOI: 10.1016/j.scitotenv.2023.169815] [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: 11/03/2023] [Revised: 12/22/2023] [Accepted: 12/29/2023] [Indexed: 01/08/2024]
Abstract
Titanium dioxide nanoparticles (TiO2 NPs) have become a focal point of research due to their widespread daily use and diverse synthesis methods, including physical, chemical, and environmentally sustainable approaches. These nanoparticles possess unique attributes such as size, shape, and surface functionality, making them particularly intriguing for applications in the biomedical field. The continuous exploration of TiO2 NPs is driven by the quest to enhance their multifunctionality, aiming to create next-generation products with superior performance. Recent research efforts have specifically focused on understanding the anatase and rutile phases of TiO2 NPs and evaluating their potential in various domains, including photocatalytic processes, antibacterial properties, antioxidant effects, and nanohybrid applications. The hypothesis guiding this research is that by exploring different synthesis methods, particularly chemical and environmentally friendly approaches, and incorporating doping and co-doping techniques, the properties of TiO2 NPs can be significantly improved for diverse applications. The study employs a comprehensive approach, investigating the effects of nanoparticle size, shape, dose, and exposure time on performance. The synthesis methods considered encompass both conventional chemical processes and environmentally friendly alternatives, with a focus on how doping and co-doping can enhance the properties of TiO2 NPs. The research unveils valuable insights into the distinct phases of TiO2 NPs and their potential across various applications. It sheds light on the improved properties achieved through doping and co-doping, showcasing advancements in photocatalytic processes, antibacterial efficacy, antioxidant capabilities, and nanohybrid applications. The study concludes by emphasizing regulatory aspects and offering suggestions for product enhancement. It provides recommendations for the reliable application of TiO2 NPs, addressing a comprehensive spectrum of critical aspects in TiO2 NP research and application. Overall, this research contributes to the evolving landscape of TiO2 NP utilization, offering valuable insights for the development of innovative and high-performance products.
Collapse
Affiliation(s)
- Naveen Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India.
| | - Nikesh Thakur
- Department of Physics, Career Point University, Hamirpur, Himachal Pradesh 176041, India
| | - Anil Kumar
- School of chemical and metallurgical engineering, University of the Witwatersrand, Johannesburg, South Africa
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, SRUC, Kings Buildings West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | - Susheel Kalia
- Department of Chemistry, ACC Wing (Academic Block) Indian Military Academy, Dehradun, Uttarakhand 248007, India
| | - Vedpriya Arya
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Ashwani Kumar
- Patanjali Herbal Research Department, Patanjali Research Institute, Haridwar, Uttarakhand 249405, India
| | - Sunil Kumar
- Department of Animal Sciences, Central University of Himachal Pradesh, Kangra, Shahpur, Himachal Pradesh 176206, India
| | - George Z Kyzas
- Hephaestus Laboratory, Department of Chemistry, School of Science, International Hellenic University, Kavala, Greece.
| |
Collapse
|
5
|
Giráldez-Pérez RM, Grueso EM, Carbonero A, Álvarez Márquez J, Gordillo M, Kuliszewska E, Prado-Gotor R. Synergistic Antibacterial Effects of Amoxicillin and Gold Nanoparticles: A Therapeutic Option to Combat Antibiotic Resistance. Antibiotics (Basel) 2023; 12:1275. [PMID: 37627696 PMCID: PMC10451730 DOI: 10.3390/antibiotics12081275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/19/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023] Open
Abstract
Compacted Au@16-mph-16/DNA-AMOX (NSi) nanosystems were prepared from amoxicillin (AMOX) and precursor Au@16-mph-16 gold nanoparticles (Ni) using a Deoxyribonucleic acid (DNA) biopolymer as a glue. The synthesized nanocarrier was tested on different bacterial strains of Escherichia coli, Staphylococcus aureus, and Streptococcus pneumoniae to evaluate its effectiveness as an antibiotic as well as its internalization. Synthesis of the nanosystems required previous structural and thermodynamic studies using circular dichroism (CD) and UV-visible techniques to guarantee optimal complex formation and maximal DNA compaction, characteristics which facilitate the correct uptake of the nanocarrier. Two nanocomplexes with different compositions and structures, denoted NS1 and NS2, were prepared, the first involving external Au@16-mph-16 binding and the second partial intercalation. The Ni and NSi nanosystems obtained were characterized via transmission electron microscopy (TEM), zeta potential, and dynamic light scattering (DLS) techniques to measure their charge, aggregation state and hydrodynamic size, and to verify their presence inside the bacteria. From these studies, it was concluded that the zeta potential values for gold nanoparticles, NS1, and NS2 nanosystems were 67.8, -36.7, and -45.1 mV. Moreover, the particle size distribution of the Au@16-mph-16 gold nanoparticles and NS2 nanoformulation was found to be 2.6 nm and 69.0 nm, respectively. However, for NS1 nanoformulation, a bimodal size distribution of 44 nm (95.5%) and 205 nm (4.5%) was found. Minimal inhibitory concentration (MIC) values were determined for the bacteria studied using a microdilution plates assay. The effect on Escherichia coli bacteria was notable, with MIC values of 17 µM for both the NS1 and NS2 nanosystems. The Staphylococcus aureus chart shows a greater inhibition effect of NS2 and NP2 in non-diluted wells, and clearly reveals a great effect on Streptococcus pneumoniae, reaching MIC values of 0.53 µM in more diluted wells. These results are in good agreement with TEM internalization studies of bacteria that reveal significant internalization and damage in Streptococcus pneumoniae. In all the treatments carried out, the antibiotic capacity of gold nanosystems as enhancers of amoxicillin was demonstrated, causing both the precursors and the nanosystems to act very quickly, and thus favoring microbial death with a small amount of antibiotic. Therefore, these gold nanosystems may constitute an effective therapy to combat resistance to antibiotics, in addition to avoiding the secondary effects derived from the administration of high doses of antibiotics.
Collapse
Affiliation(s)
- Rosa M. Giráldez-Pérez
- Department of Cell Biology, Physiology and Immunology, Faculty of Sciences, University of Cordoba, 14014 Cordoba, Spain;
| | - Elia M. Grueso
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, 41012 Seville, Spain;
| | - Alfonso Carbonero
- Department of Animal Health, Veterinary Faculty, University of Cordoba, 14014 Cordoba, Spain; (A.C.); (M.G.)
| | - Juan Álvarez Márquez
- Department of Cell Biology, Physiology and Immunology, Faculty of Sciences, University of Cordoba, 14014 Cordoba, Spain;
| | - Mirian Gordillo
- Department of Animal Health, Veterinary Faculty, University of Cordoba, 14014 Cordoba, Spain; (A.C.); (M.G.)
| | | | - Rafael Prado-Gotor
- Department of Physical Chemistry, Faculty of Chemistry, University of Seville, 41012 Seville, Spain;
| |
Collapse
|
6
|
Zakharova OV, Belova VV, Baranchikov PA, Kostyakova AA, Muratov DS, Grigoriev GV, Chebotaryova SP, Kuznetsov DV, Gusev AA. The Conditions Matter: The Toxicity of Titanium Trisulfide Nanoribbons to Bacteria E. coli Changes Dramatically Depending on the Chemical Environment and the Storage Time. Int J Mol Sci 2023; 24:ijms24098299. [PMID: 37176006 PMCID: PMC10179056 DOI: 10.3390/ijms24098299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 04/24/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
In this work, we present an analysis of the antibacterial activity of TiS3 nanostructures in water and 0.9% NaCl solution suspensions. TiS3 nanoribbons 1-10 µm long, 100-300 nm wide, and less than 100 nm thick were produced by the direct reaction of pure titanium powder with elemental sulphur in a quartz tube sealed under vacuum. For the toxicity test of a bioluminescent strain of E. coli we used concentrations from 1 to 0.0001 g L-1 and also studied fresh suspensions and suspensions left for 24 h. The strongest toxic effect was observed in freshly prepared water solutions where the luminescence of bacteria decreased by more than 75%. When saline solution was substituted for water or when the solutions were stored for 24 h it resulted in a considerable decrease in the TiS3 antibacterial effect. The toxicity of TiS3 in water exceeded the toxicity of the reference TiO2 nanoparticles, though when saline solution was used instead of water the opposite results were observed. In addition, we did not find a relationship between the antibacterial activity of water suspensions of nanoribbons and the stability of their colloidal systems, which indicates an insignificant contribution to the toxicity of aggregation processes. In 0.9% NaCl solution suspensions, toxicity increased in proportion to the increase in the zeta potential. We suppose that the noted specificity of toxicity is associated with the emission of hydrogen sulphide molecules from the surface of nanoribbons, which, depending on the concentration, can either decrease or increase oxidative stress, which is considered the key mechanism of nanomaterial cytotoxicity. However, the exact underlying mechanisms need further investigation. Thus, we have shown an important role of the dispersion medium and the period of storage in the antibacterial activity of TiS3 nanoribbons. Our results could be used in nanotoxicological studies of other two-dimensional nanomaterials, and for the development of novel antibacterial substances and other biomedical applications of this two-dimensional material.
Collapse
Affiliation(s)
- Olga V Zakharova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
- Engineering Center, Plekhanov Russian University of Economics, 117997 Moscow, Russia
| | - Valeria V Belova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Peter A Baranchikov
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Anna A Kostyakova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Dmitry S Muratov
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
- Scientific School "Chemistry and Technology of Polymer Materials", Plekhanov Russian University of Economics, Stremyanny Lane 36, 117997 Moscow, Russia
| | - Gregory V Grigoriev
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Svetlana P Chebotaryova
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
| | - Denis V Kuznetsov
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
| | - Alexander A Gusev
- Institute for Environmental Science and Biotechnology, Derzhavin Tambov State University, 392020 Tambov, Russia
- Department of Functional Nanosystems and High-Temperature Materials, National University of Science and Technology «MISIS», 119991 Moscow, Russia
- Engineering Center, Plekhanov Russian University of Economics, 117997 Moscow, Russia
| |
Collapse
|
7
|
Dotta TC, Hayann L, de Padua Andrade Almeida L, Nogueira LFB, Arnez MM, Castelo R, Cassiano AFB, Faria G, Martelli-Tosi M, Bottini M, Ciancaglini P, Catirse ABCEB, Ramos AP. Strontium Carbonate and Strontium-Substituted Calcium Carbonate Nanoparticles Form Protective Deposits on Dentin Surface and Enhance Human Dental Pulp Stem Cells Mineralization. J Funct Biomater 2022; 13:jfb13040250. [PMID: 36412891 PMCID: PMC9680411 DOI: 10.3390/jfb13040250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/09/2022] [Accepted: 11/14/2022] [Indexed: 11/19/2022] Open
Abstract
Strontium acetate is applied for dental hypersensitivity treatment; however, the use of strontium carbonates for this purpose has not been described. The use of Sr-carbonate nanoparticles takes advantage of both the benefits of strontium on dentin mineralization and the abrasive properties of carbonates. Here in, we aimed to synthesize strontium carbonate and strontium-substituted calcium carbonate nanoparticles and test them as potential compounds in active dentifrices for treating dental hypersensitivity. For this, SrCO3, Sr0.5Ca0.5CO3, and CaCO3 nanoparticles were precipitated using Na2CO3, SrCl2, and/or CaCl2 as precursors. Their morphology and crystallinity were evaluated by electron microscopy (SEM) and X-ray diffraction, respectively. The nanoparticles were added to a poly (vinyl alcohol) gel and used to brush dentin surfaces isolated from human third molars. Dentin chemical composition before and after brushing was investigated by infrared spectroscopy (FTIR) and X-ray dispersive energy spectroscopy. Dentin tubule morphology, obliteration, and resistance of the coatings to acid attack were investigated by SEM and EDS. The cytotoxicity and ability of the particles to trigger the mineralization of hDPSCs in vitro were studied. Dentin brushed with the nanoparticles was coated by a mineral layer that was also able to penetrate the tubules, while CaCO3 remained as individual particles on the surface. FTIR bands related to carbonate groups were intensified after brushing with either SrCO3 or Sr0.5Ca0.5CO3. The shift of the phosphate-related FTIR band to a lower wavenumber indicated that strontium replaced calcium on the dentin structure after treatment. The coating promoted by SrCO3 or Sr0.5Ca0.5CO3 resisted the acid attack, while calcium and phosphorus were removed from the top of the dentin surface. The nanoparticles were not toxic to hDPSCs and elicited mineralization of the cells, as revealed by increased mineral nodule formation and enhanced expression of COL1, ALP, and RUNX2. Adding Sr0.5Ca0.5CO3 as an active ingredient in dentifrices formulations may be commercially advantageous since this compound combines the well-known abrasive properties of calcium carbonate with the mineralization ability of strontium, while the final cost remains between the cost of CaCO3 and SrCO3. The novel Sr0.5Ca0.5CO3 nanoparticles might emerge as an alternative for the treatment of dental hypersensitivity.
Collapse
Affiliation(s)
- Tatiane Cristina Dotta
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Larwsk Hayann
- Department of Chemistry, Ribeirão Preto Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
| | - Leonardo de Padua Andrade Almeida
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Lucas Fabrício B. Nogueira
- Department of Chemistry, Ribeirão Preto Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
| | - Mayara M. Arnez
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Raisa Castelo
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Ana Flávia B. Cassiano
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Araraquara 14801-385, Brazil
| | - Gisele Faria
- Department of Restorative Dentistry, School of Dentistry at Araraquara, Sao Paulo State University (UNESP), Araraquara 14801-385, Brazil
| | - Milena Martelli-Tosi
- Department of Chemistry, Ribeirão Preto Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
- Department of Food Engineering, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga 13645-900, Brazil
| | - Massimo Bottini
- Department of Experimental Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
| | - Pietro Ciancaglini
- Department of Chemistry, Ribeirão Preto Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
| | - Alma B. C. E. B. Catirse
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto 14040-904, Brazil
| | - Ana Paula Ramos
- Department of Chemistry, Ribeirão Preto Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-901, Brazil
- Correspondence:
| |
Collapse
|
8
|
Kuyukina MS, Makarova MV, Pistsova ON, Glebov GG, Osipenko MA, Ivshina IB. Exposure to metal nanoparticles changes zeta potentials of Rhodococcus cells. Heliyon 2022; 8:e11632. [PMID: 36419660 PMCID: PMC9676555 DOI: 10.1016/j.heliyon.2022.e11632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/19/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022] Open
Abstract
Nanoparticles (NPs) of transition metals and their oxides are widely used in industries and exhibit diverse biological activities – from antimicrobial to growth promoting and regulating biofilms. In this study, the concentration-dependent effects of negatively charged metal and metal oxide NPs on the viability and net surface charge of Rhodococcus cells were revealed. Our hypothesis that zeta potential values of bacterial cells approach the zeta potential of NPs with an increase in the concentration of nanoparticles was statistically validated, thus suggesting the accumulation of nanoparticles on the cell surface. Thus, based on the dynamics of zeta potential, it would be possible to predict the accumulation of metal NPs on the cell surface of particular Rhodococcus species. It seemed that more toxic nanometals (e.g. CuO) accumulate more intensively on the bacterial cell wall than less toxic nanometals (Bi, Ni and Co). Physical properties of NPs, such as shape, size, dispersity and zeta potential, were characterized at different nanoparticle concentrations, in order to explain their diverse effects on bacterial viability, cellular charge and adhesion to hydrocarbons. Interestingly, an increase in Rhodococcus adhesion to n-hexadecane was observed in the presence of Cu and CuO NPs, while treatment with Fe3O4 NPs resulted in a decrease in the adhesive activity. The obtained data help to clarify the mechanisms of nano-bio interaction and make it possible to select metal and metal oxide nanoparticles to modify the surface of bacterial cells without toxic effects. Nanoparticles (NPs) of transition metals affect Rhodococcus viability and zeta potentials. Cellular zeta potentials approach the NPs values, suggesting their accumulation on the cell surface. More toxic nanometals accumulate stronger on bacterial cell surfaces. Cu and CuO NPs increase Rhodococcus adhesion to hydrocarbon, but Fe3O4 NPs reduced the adhesive activity. Targeted modification of bacterial cell surface with metal NPs is possible.
Collapse
|
9
|
Ammendolia MG, De Berardis B. Nanoparticle Impact on the Bacterial Adaptation: Focus on Nano-Titania. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3616. [PMID: 36296806 PMCID: PMC9609019 DOI: 10.3390/nano12203616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/29/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Titanium dioxide nanoparticles (nano-titania/TiO2 NPs) are used in different fields and applications. However, the release of TiO2 NPs into the environment has raised concerns about their biosafety and biosecurity. In light of the evidence that TiO2 NPs could be used to counteract antibiotic resistance, they have been investigated for their antibacterial activity. Studies reported so far indicate a good performance of TiO2 NPs against bacteria, alone or in combination with antibiotics. However, bacteria are able to invoke multiple response mechanisms in an attempt to adapt to TiO2 NPs. Bacterial adaption arises from global changes in metabolic pathways via the modulation of regulatory networks and can be related to single-cell or multicellular communities. This review describes how the impact of TiO2 NPs on bacteria leads to several changes in microorganisms, mainly during long-term exposure, that can evolve towards adaptation and/or increased virulence. Strategies employed by bacteria to cope with TiO2 NPs suggest that their use as an antibacterial agent has still to be extensively investigated from the point of view of the risk of adaptation, to prevent the development of resistance. At the same time, possible effects on increased virulence following bacterial target modifications by TiO2 NPs on cells or tissues have to be considered.
Collapse
|
10
|
Syngouna VI, Kourtaki KI, Georgopoulou MP, Chrysikopoulos CV. The role of nanoparticles (titanium dioxide, graphene oxide) on the inactivation of co-existing bacteria in the presence and absence of quartz sand. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19199-19211. [PMID: 34709550 DOI: 10.1007/s11356-021-17086-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 10/13/2021] [Indexed: 06/13/2023]
Abstract
The increased mass production and application of engineered nanomaterials (ENMs) have resulted in the release of nanoparticles (NPs) in the environment, raising uncertainties regarding their environmental impacts. This study examines the effect of graphene oxide (GO) and titanium dioxide (TiO2) NPs on the inactivation of the three model bacteria originated by mammalians including humans: Escherichia (E.) coli, Enterococcus (E.) faecalis, and Staphylococcus (S.) aureus. A series of dynamic batch experiments were conducted at constant room temperature (22 °C) in order to examine the inactivation of co-existing bacteria by NPs, in the presence and absence of quartz sand. The inactivation experimental data were satisfactorily fitted with a pseudo-first order expression with a time dependent rate coefficient. The inactivation of E. coli and S. aureus was shown to increase in the co-presence of GO or TiO2 NPs and quartz sand comparing with the presence of GO or TiO2 NPs alone. For E. faecalis, no clear trend was observed. Moreover, quartz sand was shown to affect inactivation of bacteria by GO and TiO2 NPs. Among the bacteria examined, the highest inactivation rates were observed for S. aureus.
Collapse
Affiliation(s)
- Vasiliki I Syngouna
- School of Chemical and Environmental Engineering, Technical University of Crete, 73100, Chania, Greece.
- Department of Environment, Ionian University, 29100, Zakynthos, Greece.
| | - Kleanthi I Kourtaki
- School of Chemical and Environmental Engineering, Technical University of Crete, 73100, Chania, Greece
| | - Maria P Georgopoulou
- School of Chemical and Environmental Engineering, Technical University of Crete, 73100, Chania, Greece
| | | |
Collapse
|
11
|
Environmental Fate and Toxicity of Sunscreen-Derived Inorganic Ultraviolet Filters in Aquatic Environments: A Review. NANOMATERIALS 2022; 12:nano12040699. [PMID: 35215026 PMCID: PMC8876643 DOI: 10.3390/nano12040699] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/12/2022] [Accepted: 02/14/2022] [Indexed: 01/09/2023]
Abstract
An increasing number of inorganic ultraviolet filters (UVFs), such as nanosized zinc oxide (nZnO) and titanium dioxide (nTiO2), are formulated in sunscreens because of their broad UV spectrum sunlight protection and because they limit skin damage. However, sunscreen-derived inorganic UVFs are considered to be emerging contaminants; in particular, nZnO and nTiO2 UVFs have been shown to undergo absorption and bioaccumulation, release metal ions, and generate reactive oxygen species, which cause negative effects on aquatic organisms. We comprehensively reviewed the current study status of the environmental sources, occurrences, behaviors, and impacts of sunscreen-derived inorganic UVFs in aquatic environments. We find that the associated primary nanoparticle characteristics and coating materials significantly affect the environmental behavior and fate of inorganic UVFs. The consequential ecotoxicological risks and underlying mechanisms are discussed at the individual and trophic transfer levels. Due to their persistence and bioaccumulation, more attention and efforts should be redirected to investigating the sources, fate, and trophic transfer of inorganic UVFs in ecosystems.
Collapse
|
12
|
Baranowska-Wójcik E. Factors Conditioning the Potential Effects TiO2 NPs Exposure on Human Microbiota: a Mini-Review. Biol Trace Elem Res 2021; 199:4458-4465. [PMID: 33447907 PMCID: PMC8516783 DOI: 10.1007/s12011-021-02578-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 01/05/2021] [Indexed: 01/07/2023]
Abstract
The recent years have seen a significant interest in the applications of nanotechnology in various facets of our lives. Due to their increasingly widespread use, human exposure to nanoparticles (NPs) is fast becoming unavoidable. Among the wide group of nanoparticles currently employed in industry, titanium dioxide nanoparticles, TiO2 NPs, are particularly popular. Due to its white colour, TiO2 is widely used as a whitening food additive (E 171). Yet, there have been few studies aimed at determining its direct impact on bacteria, while the available data suggest that TiO2 NPs may influence microbiota causing problems such as inflammatory bowel disease, obesity, or immunological disorders. Indeed, there are increasing concerns that its presence may lead to intestinal barrier impairment, including dysbiosis of intestinal microbiota. This article aims to present an overview of studies conducted to date with regard to the impact of TiO2 NPs on human microbiota as well as factors that can affect the same. Such information is necessary if we are to conclusively determine the potential toxicity of inorganic nanoparticles.
Collapse
Affiliation(s)
- Ewa Baranowska-Wójcik
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Skromna 8, Lublin, Poland.
| |
Collapse
|
13
|
Multifunctional Composite Coatings Based on Photoactive Metal-Oxide Nanopowders (MgO/TiO 2) in Hydrophobic Polymer Matrix for Stone Heritage Conservation. NANOMATERIALS 2021; 11:nano11102586. [PMID: 34685027 PMCID: PMC8539007 DOI: 10.3390/nano11102586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 02/02/2023]
Abstract
Multifunctional composite coatings composed of metal oxide nanoparticles dispersed in polymer matrices are an advanced solution to solve the problem of stone heritage deterioration. Their innovative design is meant to be stable, durable, transparent, easy to apply and remove, non-toxic, hydrophobic, and permeable. Coating formulations for the protection of buildings and monuments have been intensively researched lately. Such formulations are based on multifunctional composite coatings incorporating metal oxides. The present work aims to combine the hydrophobic properties of sodium polyacrylate (NaPAC16) with the antimicrobial effectiveness, with promising antimicrobial results even in the absence of light, and good compatibility of MgO (a safe to use, low cost and environmentally friendly material) and TiO2 (with antibacterial and antifungal properties), in order to develop coatings for stone materials protection. MgO (pure phase periclase) and TiO2 (pure phase anatase) nanopowders were prepared through sol–gel method, specifically routes. Aqueous dispersions of hydrophobically modified polymer (NaPAC16, polyacrylic acid sodium salt) and MgO/TiO2 nanopowders were deposited through layer-by-layer dip coating technique on glass slides and through immersion on stone fragments closely resembling the mosaic stone from the fourth century AD Roman Mosaic Edifice, from Constanta, Romania. The oxide nanopowders were characterized by: Thermal analysis (TG/DTA), scanning electron microscopy (SEM), X-ray diffraction (XRD), BET specific surface area and porosity, and UV–Vis spectroscopy for band gap determination. An aqueous dispersion of modified polyacrylate polymer and oxide nanopowders was deposited on different substrates (glass slides, red bricks, gypsum mortars). Film hydrophobicity was verified by contact angle measurements. The colour parameters were evaluated. Photocatalytic and antimicrobial activity of the powders and composite coatings were tested.
Collapse
|
14
|
Gao X, Yang K, Lin D. Influence of extracellular polymeric substance on the interaction between titanium dioxide nanoparticles and Chlorella pyrenoidosa cells. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 778:146446. [PMID: 34030365 DOI: 10.1016/j.scitotenv.2021.146446] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/07/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
The presence of extracellular polymeric substance (EPS) plays a vital role in the accumulation and toxicity of nanoparticles to microorganisms, in which the involved processes and mechanisms are still waiting to be revealed. Herein, we specifically investigated the interfacial interaction between titanium dioxide nanoparticles (nTiO2) and algae (Chlorella pyrenoidosa) with/without EPS and the effect of EPS on algal cell internalization of nTiO2. Results showed that the presence of EPS on cell surface promoted heteroaggregation between nTiO2 and algal cells, and induced more nTiO2 accumulation on algal surface; however, algal cell internalization of nTiO2 was limited by the presence of EPS. Pearson correlation analysis further proved that the presence of EPS had a positive effect on the surface accumulation of nTiO2 and a negative effect on the internalization of nTiO2. More than 60% of cell internalized nTiO2 entered algal cells through the energy dependent endocytosis pathway. It is interesting to find that anatase nTiO2 (nTiO2-A) entered algal cells mainly through the clathrin dependent endocytosis, while rutile nTiO2 (nTiO2-R) mainly through the dynamin dependent endocytosis. This difference could be due to the different affinities of nTiO2-A and nTiO2-R to the mediating receptors referring to different endocytic pathways. The removal of EPS activated the associated mediating pathways, allowing more nTiO2 to be internalized. These findings address the role of EPS on the interaction between nTiO2 and algae and promote a deeper understanding of the ecological effect of nTiO2.
Collapse
Affiliation(s)
- Xuan Gao
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China
| | - Kun Yang
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou 310058, China.
| |
Collapse
|
15
|
Markowska-Szczupak A, Endo-Kimura M, Paszkiewicz O, Kowalska E. Are Titania Photocatalysts and Titanium Implants Safe? Review on the Toxicity of Titanium Compounds. NANOMATERIALS 2020; 10:nano10102065. [PMID: 33086609 PMCID: PMC7603142 DOI: 10.3390/nano10102065] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 12/11/2022]
Abstract
Titanium and its compounds are broadly used in both industrial and domestic products, including jet engines, missiles, prostheses, implants, pigments, cosmetics, food, and photocatalysts for environmental purification and solar energy conversion. Although titanium/titania-containing materials are usually safe for human, animals and environment, increasing concerns on their negative impacts have been postulated. Accordingly, this review covers current knowledge on the toxicity of titania and titanium, in which the behaviour, bioavailability, mechanisms of action, and environmental impacts have been discussed in detail, considering both light and dark conditions. Consequently, the following conclusions have been drawn: (i) titania photocatalysts rarely cause health and environmental problems; (ii) despite the lack of proof, the possible carcinogenicity of titania powders to humans is considered by some authorities; (iii) titanium alloys, commonly applied as implant materials, possess a relatively low health risk; (iv) titania microparticles are less toxic than nanoparticles, independent of the means of exposure; (v) excessive accumulation of titanium in the environment cannot be ignored; (vi) titanium/titania-containing products should be clearly marked with health warning labels, especially for pregnant women and young children; (vi) a key knowledge gap is the lack of comprehensive data about the environmental content and the influence of titania/titanium on biodiversity and the ecological functioning of terrestrial and aquatic ecosystems.
Collapse
Affiliation(s)
- Agata Markowska-Szczupak
- Department of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Al. Piastów 42, 71-065 Szczecin, Poland;
- Correspondence: (A.M.-S.); (E.K.)
| | - Maya Endo-Kimura
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan;
| | - Oliwia Paszkiewicz
- Department of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Al. Piastów 42, 71-065 Szczecin, Poland;
| | - Ewa Kowalska
- Institute for Catalysis, Hokkaido University, N21, W10, Sapporo 001-0021, Japan;
- Correspondence: (A.M.-S.); (E.K.)
| |
Collapse
|
16
|
Delgado LP, Figueroa-Torres MZ, Ceballos-Chuc MC, García-Rodríguez R, Alvarado-Gil JJ, Oskam G, Rodriguez-Gattorno G. "Tailoring the TiO 2 phases through microwave-assisted hydrothermal synthesis: Comparative assessment of bactericidal activity". MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111290. [PMID: 32919651 DOI: 10.1016/j.msec.2020.111290] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 06/26/2020] [Accepted: 07/12/2020] [Indexed: 11/15/2022]
Abstract
Nanocrystalline titania (TiO2) is one of the most investigated crystalline nanostructured systems in the field of materials science. The technological applications of this material are related to its optoelectronic and photocatalytic properties, which in turn are strongly dependent on the crystal phase (i.e., anatase, brookite, and rutile), particle size, and surface structure. However, systematic comparative studies of all its crystal phases are scarce in literature due to difficulties in providing a controlled synthesis, which is primarily important in obtaining the brookite phase. In this report, the synthesis of TiO2 nanoparticles in the anatase, brookite, and rutile structures was explored, using amorphous TiO2 as a common precursor under microwave-assisted hydrothermal conditions. The influence of parameters such as temperature, acidity, and precursor concentration on phase crystallization were investigated. The TiO2 materials (amorphous and crystalline phases as well as commercial Degussa P25) were systematically characterized using Raman spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, UV-visible reflectance spectroscopy, and dynamic and electrophoretic light scattering. The bactericidal activity and photocatalytic antibacterial effectiveness of each material were evaluated through the determination of the minimum inhibitory and bactericidal concentrations, and via the mortality kinetic method under ultraviolet (UV) illumination under similar conditions with two bacterial groups of unique cellular structures: Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus). The results are discussed with particular emphasis on the relationship between the synthesis parameters (acidity, precursor concentration, temperature and reaction time) and the bactericidal properties.
Collapse
Affiliation(s)
- L P Delgado
- Departamento de Física Aplicada, CINVESTAV-I. P. N., Cordemex, 97310 Mérida, Yucatán, Mexico
| | - M Z Figueroa-Torres
- Universidad Autónoma de Nuevo León, Facultad de Ingeniería Civil-IIC, San Nicolás de Los Garza, Nuevo León 66455, Mexico
| | - M C Ceballos-Chuc
- Departamento de Física Aplicada, CINVESTAV-I. P. N., Cordemex, 97310 Mérida, Yucatán, Mexico
| | - R García-Rodríguez
- Departamento de Física Aplicada, CINVESTAV-I. P. N., Cordemex, 97310 Mérida, Yucatán, Mexico
| | - J J Alvarado-Gil
- Departamento de Física Aplicada, CINVESTAV-I. P. N., Cordemex, 97310 Mérida, Yucatán, Mexico
| | - G Oskam
- Departamento de Física Aplicada, CINVESTAV-I. P. N., Cordemex, 97310 Mérida, Yucatán, Mexico
| | - G Rodriguez-Gattorno
- Departamento de Física Aplicada, CINVESTAV-I. P. N., Cordemex, 97310 Mérida, Yucatán, Mexico.
| |
Collapse
|
17
|
Limage R, Tako E, Kolba N, Guo Z, García-Rodríguez A, Marques CNH, Mahler GJ. TiO 2 Nanoparticles and Commensal Bacteria Alter Mucus Layer Thickness and Composition in a Gastrointestinal Tract Model. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2000601. [PMID: 32338455 PMCID: PMC7282385 DOI: 10.1002/smll.202000601] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 05/05/2023]
Abstract
Nanoparticles (NPs) are used in food packaging and processing and have become an integral part of many commonly ingested products. There are few studies that have focused on the interaction between ingested NPs, gut function, the mucus layer, and the gut microbiota. In this work, an in vitro model of gastrointestinal (GI) tract is used to determine whether, and how, the mucus layer is affected by the presence of Gram-positive, commensal Lactobacillus rhamnosus; Gram-negative, opportunistic Escherichia coli; and/or exposure to physiologically relevant doses of pristine or digested TiO2 NPs. Caco-2/HT29-MTX-E12 cell monolayers are exposed to physiological concentrations of bacteria (expressing fluorescent proteins) and/or TiO2 nanoparticles for a period of 4 h. To determine mucus thickness and composition, cell monolayers are stained with alcian blue, periodic acid schiff, or an Alexa Fluor 488 conjugate of wheat germ agglutinin. It is found that the presence of both bacteria and nanoparticles alter the thickness and composition of the mucus layer. Changes in the distribution or pattern of mucins can be indicative of pathological conditions, and this model provides a platform for understanding how bacteria and/or NPs may interact with and alter the mucus layer.
Collapse
Affiliation(s)
| | - Elad Tako
- USDA-ARS, Robert W. Holley Center for Agriculture and Health, Ithaca, NY, 14853, USA
| | - Nikolai Kolba
- USDA-ARS, Robert W. Holley Center for Agriculture and Health, Ithaca, NY, 14853, USA
| | - Zhongyuan Guo
- Department of Biomedical Engineering, Binghamton University, Binghamton, NY, 13902, USA
| | - Alba García-Rodríguez
- Department of Biomedical Engineering, Binghamton University, Binghamton, NY, 13902, USA
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY, 13902, USA
| | - Cláudia N H Marques
- Department of Biological Sciences, Binghamton University, Binghamton, NY, 13902, USA
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY, 13902, USA
| | - Gretchen J Mahler
- Department of Biomedical Engineering, Binghamton University, Binghamton, NY, 13902, USA
- Binghamton Biofilm Research Center, Binghamton University, Binghamton, NY, 13902, USA
| |
Collapse
|
18
|
Baysal A, Saygin H, Ustabasi GS. Age-related physicochemical differences in ZnO nanoparticles in the seawater and their bacterial interaction. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:276. [PMID: 32274591 DOI: 10.1007/s10661-020-08254-w] [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: 09/05/2019] [Accepted: 03/27/2020] [Indexed: 06/11/2023]
Abstract
To assess the fate and behavior of engineered nanoparticles in the environment, it is important to examine the physicochemical and toxicological transformation of nanoparticles as they age in seawater. In this study, we investigated how aging and seawater conditions altered the physiochemical structure of nanoparticles and affected their interactions with bacteria. For this purpose, zinc oxide nanoparticles were aged under different seawater conditions by keeping them in 1%, 10%, and 100% seawater for 1 day and 20 days. The main physicochemical parameters (surface chemistry, chemical composition, particle size, and zeta potential) and toxicity of aged nanoparticles towards gram-negative Pseudomonas aeruginosa and gram-positive Staphylococcus aureus were examined. The results indicated that aged zinc oxide nanoparticles in various concentrations of seawater changed their surface chemistry, chemical composition, particle size, and zeta potentials. Growth inhibition results were observed in that the inhibition of gram-negative (Pseudomonas aeruginosa) bacteria was higher compared with the gram-positive (Staphylococcus aureus) bacteria, and Staphylococcus aureus activated with the aged zinc oxide nanoparticles. Also, the results showed that the key biochemical factors affected by the aging and seawater concentration.
Collapse
Affiliation(s)
- Asli Baysal
- Health Services Vocational School of Higher Education, T. C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey.
| | - Hasan Saygin
- Application and Research Center for Advanced Studies, T. C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey
| | - Gul Sirin Ustabasi
- Health Services Vocational School of Higher Education, T. C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey
| |
Collapse
|
19
|
Baysal A, Saygin H, Ustabasi GS. An insight into the dependency on sample preparation for (eco) toxicity assessment of TiO 2 nanoparticles. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:144. [PMID: 31989337 DOI: 10.1007/s10661-020-8107-7] [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: 06/01/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Assessing the environmental hazard of nanoparticles can be a challenging task using various testing strategies. However, to our knowledge, no information is available about the impact of the sample preparation on the toxicity and toxicity mechanism of nanoparticles. For this aim, three sample preparation methods and their available toxicity procedures were conducted to examine the (eco) toxicity of TiO2 nanoparticles using bacteria model system. To detail understanding of the effect of sample preparation, the key events on the inhibition were examined by physicochemical and antioxidant responses. The findings showed that the physicochemical and toxicological behavior of the tested TiO2 NPs varied according to the sample preparation method.
Collapse
Affiliation(s)
- Asli Baysal
- Health Services Vocational School of Higher Education, T.C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey.
| | - Hasan Saygin
- Application and Research Center for Advanced Studies, T.C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey
| | - Gul Sirin Ustabasi
- Health Services Vocational School of Higher Education, T.C. Istanbul Aydin University, Sefakoy Kucukcekmece, 34295, Istanbul, Turkey
| |
Collapse
|
20
|
Jain A, Kumar S, Seena S. Can low concentrations of metal oxide and Ag loaded metal oxide nanoparticles pose a risk to stream plant litter microbial decomposers? THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 653:930-937. [PMID: 30759618 DOI: 10.1016/j.scitotenv.2018.10.376] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/25/2018] [Accepted: 10/27/2018] [Indexed: 06/09/2023]
Abstract
Nanoparticles (NPs) continue to be extensively produced by many industries, which ultimately leads to its release into the aquatic environment. It is crucial to estimate the impact of low concentrations of NPs which are environmentally relevant. Litter decomposition is a key ecological process in forested streams; microbes like fungi and bacteria are recognised to play a vital role in litter decomposition. In this study, zinc oxide (ZnO), titanium dioxide (TiO2), silver loaded ZnO (Ag/ZnO) and silver loaded TiO2 (Ag/TiO2) NPs were synthesized, and impacts of low concentrations (0, 2.5, 25, 50 μM) on leaf litter decomposition, fungal sporulation and bacterial growth were assessed. Fungal assemblages consisting of Articulospora tetracladia, Neonectria lugdunensis, Tricladium splendens and Varicosporium elodeae were used to study litter decomposition in microcosms exposed to NPs for 21 days. Two freshwater bacterial species belonging to the family Enterobacteriaceae were used to assess growth after 12 h of exposure to NPs. Types and concentrations of NPs affected litter decomposition and sporulation but not growth of bacteria. Leaf mass loss was significantly different between all concentrations but not between 25 and 50 μM. Fungal sporulation was significantly different among all concentrations of NPs. Fungal sporulation decreased with increase in concentration of NPs whereas a particular trend was not observed with mass loss except for Ag/ZnO. A 50 μM of Ag/ZnO had the highest impact on litter decomposition while 50 μM of ZnO on sporulation. The impact of Ag loaded metal oxides were not strikingly different from those of bare metal oxides except for the more pronounced impact on the mass loss accomplished by Ag/ZnO than by ZnO. Overall our study highlights that very low concentrations of NPs in freshwaters can impact freshwater ecosystem functioning.
Collapse
Affiliation(s)
- Aishwarya Jain
- MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Coimbra 3004-517, Portugal
| | - Santosh Kumar
- Department of Chemistry, University of Coimbra, Coimbra 3004-535, Portugal
| | - Sahadevan Seena
- MARE-Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, Coimbra 3004-517, Portugal.
| |
Collapse
|
21
|
Asanova AA, Polonskiy VI, Manukovsky NS, Khizhnyak SV. Fungistatic Activity of Engineered Nanoparticles. ACTA ACUST UNITED AC 2018. [DOI: 10.1134/s1995078018030023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
22
|
Baek S, Joo SH, Blackwelder P, Toborek M. Effects of coating materials on antibacterial properties of industrial and sunscreen-derived titanium-dioxide nanoparticles on Escherichia coli. CHEMOSPHERE 2018; 208:196-206. [PMID: 29870909 DOI: 10.1016/j.chemosphere.2018.05.167] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 05/12/2018] [Accepted: 05/27/2018] [Indexed: 05/12/2023]
Abstract
Organic or inorganic stabilizers are often used for coating nanoparticles (NPs) in consumer products. However, upon release of stabilized NPs into the environment, uncertainty exists as to the antimicrobial properties of NPs due to stabilizers and the resultant bioaccumulation in organisms. This study investigates antibacterial effects and subsequent mechanisms of TiO2 NPs on Escherichia coli (E. coli) in the presence and absence of stabilizers (CMC, PVP, and SiO2) commonly used in consumer products. Compared with uncoated TiO2 NPs, the presence of any stabilizers tested in this study increased toxicity of NPs and enhanced growth inhibition in E. coli. While the particle sizes of TiO2 were smaller as the result of coating with PVP or CMC and appeared to contribute to E. coli cell damage, the generation of reactive oxygen species (ROS) was independent of stabilizer type. In fact, coating with PVP and CMC exerted ROS scavenging properties. In contrast, increased ROS production was observed at higher concentrations of TiO2 and upon coating with SiO2. This impact of SiO2 can be related to the formation of a TiOSi chemical bond. The results of the present study emphasize the importance of nanoparticle coating to their anti-bacterial activity and toxicity.
Collapse
Affiliation(s)
- Soyoung Baek
- Department of Civil, Architectural, and Environmental Engineering, University of Miami, 1251 Memorial Dr. McArthur Engineering Building, Coral Gables, FL 33146-0630, USA
| | - Sung Hee Joo
- Department of Civil, Architectural, and Environmental Engineering, University of Miami, 1251 Memorial Dr. McArthur Engineering Building, Coral Gables, FL 33146-0630, USA.
| | - Pat Blackwelder
- Department of Marine Geosciences, University of Miami, 4600 Rickenbacker Causeway Miami, FL 33149-1098, USA; University of Miami Center for Advanced Microscopy (UMCAM), Department of Chemistry, 1301 Memorial Dr, Coral Gables, FL 33146-0630, USA
| | - Michal Toborek
- Department of Biochemistry and Molecular Biology, School of Medicine, University of Miami, 1011 NW 15th Street, Miami, FL, 33136, USA
| |
Collapse
|
23
|
Aderibigbe BA. Metal-Based Nanoparticles for the Treatment of Infectious Diseases. Molecules 2017; 22:E1370. [PMID: 28820471 PMCID: PMC6152252 DOI: 10.3390/molecules22081370] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 08/15/2017] [Indexed: 11/16/2022] Open
Abstract
Infectious diseases can be transmitted and they cause a significant burden on public health globally. They are the greatest world killers and it is estimated that they are responsible for the demise of over 17 million people annually. The impact of these diseases is greater in the developing countries. People with compromised immune systems and children are the most affected. Infectious diseases may be caused by bacteria, viruses, and protozoa. The treatment of infectious diseases is hampered by simultaneous resistance to multiple drugs, indicating that there is a serious and pressing need to develop new therapeutics that can overcome drug resistance. This review will focus on the recent reports of metal-based nanoparticles that are potential therapeutics for the treatment of infectious diseases and their biological efficacy (in vitro and in vivo).
Collapse
Affiliation(s)
- Blessing Atim Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape 5700, South Africa.
| |
Collapse
|
24
|
Mahaye N, Thwala M, Cowan DA, Musee N. Genotoxicity of metal based engineered nanoparticles in aquatic organisms: A review. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2017; 773:134-160. [PMID: 28927524 DOI: 10.1016/j.mrrev.2017.05.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 05/29/2017] [Accepted: 05/30/2017] [Indexed: 02/07/2023]
Abstract
Engineered nanoparticles (ENPs) are an emerging class of environmental contaminants, but are generally found in very low concentrations and are therefore likely to exert sub-lethal effects on aquatic organisms. In this review, we: (i) highlight key mechanisms of metal-based ENP-induced genotoxicity, (ii) identify key nanoparticle and environmental factors which influence the observed genotoxic effects, and (iii) highlight the challenges involved in interpreting reported data and provide recommendations on how these challenges might be addressed. We review the application of eight different genotoxicity assays, where the Comet Assay is generally preferred due to its capacity to detect low levels of DNA damage. Most ENPs have been shown to cause genotoxic responses; e.g., DNA or/and chromosomal fragmentation, or DNA strand breakage, but at unrealistic high concentrations. The genotoxicity of the ENPs was dependent on the inherent physico-chemical properties (e.g. size, coating, surface chemistry, e.tc.), and the presence of co-pollutants. To enhance the value of published genotoxicity data, the role of environmental processes; e.g., dissolution, aggregation and agglomeration, and adsorption of ENPs when released in aquatic systems, should be included, and assay protocols must be standardized. Such data could be used to model ENP genotoxicity processes in open environmental systems.
Collapse
Affiliation(s)
- N Mahaye
- Centre for Microbial Ecology and Genomics, Department of Genetics, University of Pretoria, Pretoria, South Africa; Water Resources Competence Area, Natural Resources and the Environment, CSIR, Pretoria, South Africa
| | - M Thwala
- Water Resources Competence Area, Natural Resources and the Environment, CSIR, Pretoria, South Africa
| | - D A Cowan
- Centre for Microbial Ecology and Genomics, Department of Genetics, University of Pretoria, Pretoria, South Africa
| | - N Musee
- Department of Chemical Engineering, University of Pretoria, Pretoria, South Africa.
| |
Collapse
|
25
|
Planchon M, Léger T, Spalla O, Huber G, Ferrari R. Metabolomic and proteomic investigations of impacts of titanium dioxide nanoparticles on Escherichia coli. PLoS One 2017; 12:e0178437. [PMID: 28570583 PMCID: PMC5453534 DOI: 10.1371/journal.pone.0178437] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 05/13/2017] [Indexed: 11/18/2022] Open
Abstract
In a previous study, it was demonstrated that the toxic impact of titanium dioxide nanoparticles on Escherichia coli starts at 10 ppm and is closely related to the presence of little aggregates. It was also assumed that only a part of the bacterial population is able to adapt to this stress and attempts to survive. Proteomic analyses, supported by results from metabolomics, reveal that exposure of E. coli to nano-TiO2 induces two main effects on bacterial metabolism: firstly, the up-regulation of proteins and the increase of metabolites related to energy and growth metabolism; secondly, the down-regulation of other proteins resulting in an increase of metabolites, particularly amino acids. Some proteins, e.g. chaperonin 1 or isocitrate dehydrogenase, and some metabolites, e.g. phenylalanine or valine, might be used as biomarkers of nanoparticles stress. Astonishingly, the ATP content gradually rises in relation with the nano-TiO2 concentration in the medium, indicating a dramatic release of ATP by the damaged cells. These apparently contradictory results accredit the thesis of a heterogeneity of the bacterial population. This heterogeneity is also confirmed by SEM images which show that while some bacteria are fully covered by nano-TiO2, the major part of the bacterial population remains free from nanoparticles, resulting in a difference of proteome and metabolome. The use of combined-omics has allowed to better understand the heterogeneous bacterial response to nano-TiO2 stress due to heterogeneous contacts between the protagonists under environmental conditions.
Collapse
Affiliation(s)
- Mariane Planchon
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
- Université Paris Diderot, Sorbonne Paris Cité, IPGP, UMR 7154, Paris Cedex 13 France
- iCEINT, International Consortium for the Environmental Implications of Nanotechnology
| | - Thibaut Léger
- Mass Spectrometry Laboratory, Institut Jacques Monod, UMR 7592, Univ Paris Diderot, CNRS, Sorbonne Paris Cité, Paris, France
| | - Olivier Spalla
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
- iCEINT, International Consortium for the Environmental Implications of Nanotechnology
| | - Gaspard Huber
- NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette, France
- * E-mail: (GH); (RF)
| | - Roselyne Ferrari
- Université Paris Diderot, Sorbonne Paris Cité, IPGP, UMR 7154, Paris Cedex 13 France
- Université Paris Diderot, Sorbonne Paris Cité, LIED, UMR 8236, Paris, France
- * E-mail: (GH); (RF)
| |
Collapse
|
26
|
Mockdeci H, Polonini H, Martins I, Granato AP, Raposo N, Chaves MDG. Evaluation of ex vivo effectiveness of commercial desensitizing dentifrices. J Clin Exp Dent 2017; 9:e503-e510. [PMID: 28469813 PMCID: PMC5410668 DOI: 10.4317/jced.53040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 11/06/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Dentin hypersensitivity is a short, severe pain with fast onset. Therapy aims to either prevent or decrease neural transmission or physically occlude the dentinal tubules. This study aimed to evaluate the effectiveness of commercial desensitizing dentifrice by means of an ex vivo method. MATERIAL AND METHODS Samples (n=8 lower human premolars for each group) were randomly allocated into: G1- brushing with Colgate®Sensitive Pro-Relief; G2- brushing with Sensodyne®Rapid Relief; G3- brushing with Sensodyne®Repair & Protect; and G4- brushing with Colgate®Maximum Cavity Protection. The test bodies were submitted to simulated toothbrushing and dentifrices were analyzed regarding their hydrodynamic size, polydispersity index (PI) and zeta potential. Specimens were evaluated using: scanning electron microscopy (SEM); spectroscopy energy dispersive X-ray (EDS); and profilometry. A qualitative analysis of the photomicrographs and topographies was performed. RESULTS The dentifrices showed statistical similar physical and chemical characteristics. They also demonstrated obliteration of dentinal tubules when micrographs were observed. Regarding the chemical elements present in the dentin samples, there was a statistically significant difference between the control and experimental surfaces in the four groups. CONCLUSIONS Joint data analysis shows that the desensitizing dentifrice showed better results with regards to the obliteration of dentinal tubules compared to positive and negative controls. Key words:Dentin hypersensitivity, dentin desensitizing agents, toothpastes.
Collapse
Affiliation(s)
- Hanny Mockdeci
- Faculty of Dentistry, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Hudson Polonini
- Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Isadora Martins
- Faculty of Dentistry, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Ana-Paula Granato
- Faculty of Dentistry, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | - Nádia Raposo
- Faculty of Pharmacy, Federal University of Juiz de Fora, Juiz de Fora, Brazil
| | | |
Collapse
|
27
|
Birben NC, Tomruk A, Bekbolet M. The role of visible light active TiO 2 specimens on the solar photocatalytic disinfection of E. coli. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:12618-12627. [PMID: 27714661 DOI: 10.1007/s11356-016-7769-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
Solar photocatalytic disinfection efficiency of novel visible light activated (VLA) photocatalysts was evaluated with the aim of assessing inactivation of Escherichia coli as the pathogen indicator organism present in drinking water. Influence of humic acid (HA) on the photocatalytic disinfection efficiency of the specified VLA TiO2 specimens i.e., N-doped, Se-doped, and Se-N co-doped TiO2 was also investigated. Photocatalytic disinfection efficiency was assessed by the enumeration of bacteria following selected irradiation periods. Degradation and compositional changes in organic matter (OM) was also tracked by means of UV-vis and advanced fluorescence spectroscopic (EEM features) parameters. Photocatalytic mineralization of the organic matter was followed by dissolved organic carbon contents. Presence of HA as a model organic compound of natural organic matter (NOM) displayed a retardation effect on solar photocatalytic abatement of E. coli. However, no distinctly different effect was observed under solar photolytic conditions due to the presence of HA. Regrowth of E. coli could not be assessed under the specified experimental conditions. A comparison was introduced with respect to the use of undoped TiO2 P-25 as the photocatalyst.
Collapse
Affiliation(s)
- Nazmiye Cemre Birben
- Institute of Environmental Sciences, Bogazici University, 34342 Bebek, Istanbul, Turkey.
| | - Ayse Tomruk
- Institute of Environmental Sciences, Bogazici University, 34342 Bebek, Istanbul, Turkey
| | - Miray Bekbolet
- Institute of Environmental Sciences, Bogazici University, 34342 Bebek, Istanbul, Turkey
| |
Collapse
|
28
|
Bourgeault A, Legros V, Gonnet F, Daniel R, Paquirissamy A, Bénatar C, Spalla O, Chanéac C, Renault JP, Pin S. Interaction of TiO 2 nanoparticles with proteins from aquatic organisms: the case of gill mucus from blue mussel. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:13474-13483. [PMID: 28390017 DOI: 10.1007/s11356-017-8801-3] [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: 12/05/2016] [Accepted: 03/10/2017] [Indexed: 06/07/2023]
Abstract
To better understand the mechanisms of TiO2 nanoparticle (NP) uptake and toxicity in aquatic organisms, we investigated the interaction of NPs with the proteins found in gill mucus from blue mussels. Mucus is secreted by many aquatic organisms and is often their first line of defense against pathogens, xenobiotics, and other sources of environmental stress. Here, five TiO2 NPs and one SiO2 NP were incubated with gill mucus and run out on a one-dimensional polyacrylamide gel for a comparative qualitative analysis of the free proteins in the mucosal solution and the proteins bound to NPs. We then used nanoscale liquid chromatography coupled with tandem mass spectrometry to identify proteins of interest. Our data demonstrated dissimilar protein profiles between the crude mucosal solution and proteins adsorbed on NPs. In particular, extrapallial protein (EP), one of the most abundant mucus proteins, was absent from the adsorbed proteins. After thermal denaturation experiments, this absence was attributed to the EP content in aromatic amino acids that prevents protein unfolding and thus adsorption on the NP. Moreover, although the majority of the protein corona was qualitatively similar across the NPs tested here (SiO2 and TiO2), a few proteins in the corona showed a specific recruitment pattern according to the NP oxide (TiO2 vs SiO2) or crystal structure (anatase TiO2 vs rutile TiO2). Therefore, protein adsorption may vary with the type of NP. Graphical abstract Proteins with adsorption selectivity as identified from isolated bands.
Collapse
Affiliation(s)
- Adeline Bourgeault
- LIONS, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191, Gif-sur-Yvette, France.
| | - Véronique Legros
- CNRS, UMR 8587, Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, 91025, Evry, France
- Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, Université Evry-Val-d'Essonne, 91025, Evry, France
| | - Florence Gonnet
- CNRS, UMR 8587, Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, 91025, Evry, France
- Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, Université Evry-Val-d'Essonne, 91025, Evry, France
| | - Regis Daniel
- CNRS, UMR 8587, Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, 91025, Evry, France
- Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, Université Evry-Val-d'Essonne, 91025, Evry, France
| | - Aurélie Paquirissamy
- LIONS, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191, Gif-sur-Yvette, France
| | - Clémence Bénatar
- LIONS, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191, Gif-sur-Yvette, France
| | - Olivier Spalla
- LIONS, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191, Gif-sur-Yvette, France
| | - Corinne Chanéac
- Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris, Sorbonne Universités, UPMC Univ Paris 06, CNRS, 4 Place Jussieu, 75005, Paris, France
| | - Jean-Philippe Renault
- LIONS, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191, Gif-sur-Yvette, France
| | - Serge Pin
- LIONS, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191, Gif-sur-Yvette, France
| |
Collapse
|
29
|
Yadav T, Mungray AA, Mungray AK. Effect of TiO 2 nanoparticles on UASB biomass activity and dewatered sludge. ENVIRONMENTAL TECHNOLOGY 2017; 38:413-423. [PMID: 27283102 DOI: 10.1080/09593330.2016.1196738] [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] [Indexed: 06/06/2023]
Abstract
The accumulation of the nanowastes in the wastewater treatment plants has raised several concerns; therefore, it is an utmost priority to study the nanoparticle (NP) toxicity in such systems. In this work, the effect of TiO2 NPs on up-flow anaerobic sludge blanket (UASB) microflora and their photocatalytic effect on dewatered sludge were studied. We observed 99.98% removal of TiO2 NPs by sludge biomass within 24 h, though negligible toxicity was found up to 100 mg/L TiO2 concentration on extracellular polymeric substances (EPS), volatile fatty acid and biogas generation. The low toxicity corresponds to the agglomeration of TiO2 NPs in UASB sludge. Alterations in dewatered sludge biochemical composition and increase in cell damage were observed upon exposure to sunlight as evidenced by FTIR and fluorescent microscopy, respectively. Results suggest the negligible toxicity of TiO2 NPs on UASB biomass activity; however, once exposed to open environment and sunlight, they may exert detrimental effects.
Collapse
Affiliation(s)
- Tushar Yadav
- a Chemical Engineering Department , Sardar Vallabhbhai National Institute of Technology , Surat , Gujarat , India
| | - Alka A Mungray
- a Chemical Engineering Department , Sardar Vallabhbhai National Institute of Technology , Surat , Gujarat , India
| | - Arvind K Mungray
- a Chemical Engineering Department , Sardar Vallabhbhai National Institute of Technology , Surat , Gujarat , India
| |
Collapse
|
30
|
Rapidly Probing Antibacterial Activity of Graphene Oxide by Mass Spectrometry-based Metabolite Fingerprinting. Sci Rep 2016; 6:28045. [PMID: 27306507 PMCID: PMC4910068 DOI: 10.1038/srep28045] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 05/26/2016] [Indexed: 01/24/2023] Open
Abstract
Application of nanomaterials as anti-bacteria agents has aroused great attention. To investigate the antibacterial activity and antibacterial mechanism of nanomaterials from a molecular perspective is important for efficient developing of nanomaterial antibiotics. In the current work, a new mass spectrometry-based method was established to investigate the bacterial cytotoxicity of graphene oxide (GO) by the metabolite fingerprinting of microbes. The mass spectra of extracted metabolites from two strains DH5α and ATCC25922 were obtained before and after the incubation with nanomaterials respectively. Then principal component analysis (PCA) of these spectra was performed to reveal the relationship between the metabolism disorder of microbes and bactericidal activity of GO. A parameter “D” obtained from PCA scores was proposed that is capable to quantitatively evaluate the antibacterial activity of GO in concentration and time-dependent experiments. Further annotation of the fingerprinting spectra shows the variabilities of important metabolites such as phosphatidylethanolamine, phosphatidylglycerol and glutathione. This metabolic perturbation of E. coli indicates cell membrane destruction and oxidative stress mechanisms for anti-bacteria activity of graphene oxide. It is anticipated that this mass spectrometry-based metabolite fingerprinting method will be applicable to other antibacterial nanomaterials and provide more clues as to their antibacterial mechanism at molecular level.
Collapse
|
31
|
Bogdan J, Zarzyńska J, Pławińska-Czarnak J. Comparison of Infectious Agents Susceptibility to Photocatalytic Effects of Nanosized Titanium and Zinc Oxides: A Practical Approach. NANOSCALE RESEARCH LETTERS 2015; 10:1023. [PMID: 26239879 PMCID: PMC4523504 DOI: 10.1186/s11671-015-1023-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 07/27/2015] [Indexed: 05/20/2023]
Abstract
Nanotechnology contributes towards a more effective eradication of pathogens that have emerged in hospitals, veterinary clinics, and food processing plants and that are resistant to traditional drugs or disinfectants. Since new methods of pathogens eradication must be invented and implemented, nanotechnology seems to have become the response to that acute need. A remarkable achievement in this field of science was the creation of self-disinfecting surfaces that base on advanced oxidation processes (AOPs). Thus, the phenomenon of photocatalysis was practically applied. Among the AOPs that have been most studied in respect of their ability to eradicate viruses, prions, bacteria, yeasts, and molds, there are the processes of TiO2/UV and ZnO/UV. Titanium dioxide (TiO2) and zinc oxide (ZnO) act as photocatalysts, after they have been powdered to nanoparticles. Ultraviolet (UV) radiation is an agent that determines their excitation. Methods using photocatalytic properties of nanosized TiO2 and ZnO prove to be highly efficient in inactivation of infectious agents. Therefore, they are being applied on a growing scale. AOP-based disinfection is regarded as a very promising tool that might help overcome problems in food hygiene and public health protection. The susceptibility of infectious agents to photocatalylic processes can be generally arranged in the following order: viruses > prions > Gram-negative bacteria > Gram-positive bacteria > yeasts > molds.
Collapse
Affiliation(s)
- Janusz Bogdan
- Department of Food Hygiene and Public Health Protection Faculty of Veterinary Medicine, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | - Joanna Zarzyńska
- Department of Food Hygiene and Public Health Protection Faculty of Veterinary Medicine, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | - Joanna Pławińska-Czarnak
- Department of Food Hygiene and Public Health Protection Faculty of Veterinary Medicine, Warsaw University of Life Sciences—SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| |
Collapse
|
32
|
Juganson K, Ivask A, Blinova I, Mortimer M, Kahru A. NanoE-Tox: New and in-depth database concerning ecotoxicity of nanomaterials. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:1788-804. [PMID: 26425431 PMCID: PMC4578397 DOI: 10.3762/bjnano.6.183] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 07/30/2015] [Indexed: 05/18/2023]
Abstract
The increasing production and use of engineered nanomaterials (ENMs) inevitably results in their higher concentrations in the environment. This may lead to undesirable environmental effects and thus warrants risk assessment. The ecotoxicity testing of a wide variety of ENMs rapidly evolving in the market is costly but also ethically questionable when bioassays with vertebrates are conducted. Therefore, alternative methods, e.g., models for predicting toxicity mechanisms of ENMs based on their physico-chemical properties (e.g., quantitative (nano)structure-activity relationships, QSARs/QNARs), should be developed. While the development of such models relies on good-quality experimental toxicity data, most of the available data in the literature even for the same test species are highly variable. In order to map and analyse the state of the art of the existing nanoecotoxicological information suitable for QNARs, we created a database NanoE-Tox that is available as Supporting Information File 1. The database is based on existing literature on ecotoxicology of eight ENMs with different chemical composition: carbon nanotubes (CNTs), fullerenes, silver (Ag), titanium dioxide (TiO2), zinc oxide (ZnO), cerium dioxide (CeO2), copper oxide (CuO), and iron oxide (FeO x ; Fe2O3, Fe3O4). Altogether, NanoE-Tox database consolidates data from 224 articles and lists altogether 1,518 toxicity values (EC50/LC50/NOEC) with corresponding test conditions and physico-chemical parameters of the ENMs as well as reported toxicity mechanisms and uptake of ENMs in the organisms. 35% of the data in NanoE-Tox concerns ecotoxicity of Ag NPs, followed by TiO2 (22%), CeO2 (13%), and ZnO (10%). Most of the data originates from studies with crustaceans (26%), bacteria (17%), fish (13%), and algae (11%). Based on the median toxicity values of the most sensitive organism (data derived from three or more articles) the toxicity order was as follows: Ag > ZnO > CuO > CeO2 > CNTs > TiO2 > FeO x . We believe NanoE-Tox database contains valuable information for ENM environmental hazard estimation and development of models for predicting toxic potential of ENMs.
Collapse
Affiliation(s)
- Katre Juganson
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
- Department of Chemistry, Tallinn University of Technology, Akadeemia tee 15, 12618 Tallinn, Estonia
| | - Angela Ivask
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
- Mawson Institute, University of South Australia, Mawson Lakes, 5095 South Australia, Australia
| | - Irina Blinova
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| | - Monika Mortimer
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
- Bren School of Environmental Science & Management, University of California Santa Barbara, Santa Barbara, California 93106-5131, United States
| | - Anne Kahru
- Laboratory of Environmental Toxicology, National Institute of Chemical Physics and Biophysics, Akadeemia tee 23, 12618 Tallinn, Estonia
| |
Collapse
|
33
|
Polonini HC, Brandão HM, Raposo NRB, Brandão MAF, Mouton L, Couté A, Yéprémian C, Sivry Y, Brayner R. Size-dependent ecotoxicity of barium titanate particles: the case of Chlorella vulgaris green algae. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:938-948. [PMID: 25763523 DOI: 10.1007/s10646-015-1436-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/23/2015] [Indexed: 06/04/2023]
Abstract
Studies have been demonstrating that smaller particles can lead to unexpected and diverse ecotoxicological effects when compared to those caused by the bulk material. In this study, the chemical composition, size and shape, state of dispersion, and surface's charge, area and physicochemistry of micro (BT MP) and nano barium titanate (BT NP) were determined. Green algae Chlorella vulgaris grown in Bold's Basal (BB) medium or Seine River water (SRW) was used as biological indicator to assess their aquatic toxicology. Responses such as growth inhibition, cell viability, superoxide dismutase (SOD) activity, adenosine-5-triphosphate (ATP) content and photosynthetic activity were evaluated. Tetragonal BT (~170 nm, 3.24 m(2) g(-1) surface area) and cubic BT (~60 nm, 16.60 m(2) g(-1)) particles were negative, poorly dispersed, and readily aggregated. BT has a statistically significant effect on C. vulgaris growth since the lower concentration tested (1 ppm), what seems to be mediated by induced oxidative stress caused by the particles (increased SOD activity and decreased photosynthetic efficiency and intracellular ATP content). The toxic effects were more pronounced when the algae was grown in SRW. Size does not seem to be an issue influencing the toxicity in BT particles toxicity since micro- and nano-particles produced significant effects on algae growth.
Collapse
Affiliation(s)
- Hudson C Polonini
- Núcleo de Pesquisa e Inovação em Ciências da Saúde (NUPICS), Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Ma S, Zhou K, Yang K, Lin D. Heteroagglomeration of oxide nanoparticles with algal cells: effects of particle type, ionic strength and pH. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:932-939. [PMID: 25495243 DOI: 10.1021/es504730k] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Discharged oxide nanoparticles (NPs) have been shown toxic to unicellular algae, yet the research on heteroagglomeration between NPs and cells as an important precondition of the toxicity is scarce. This study for the first time investigated heteroagglomerations between various NPs and algal cells (Chlorella pyrenoidosa) and analyzed influencing factors including pH and ionic strength (IS) through cosettling experiment, transmission electron microscopic (TEM) observation, and Derjaguin–Landau–Verwey–Overbeek (DLVO) calculation. The examined NPs included anatase and rutile TiO2, microporous and spherical SiO2, and α-form and β-form Al2O3. The results of cosettling experiments coincided well with the TEM observations, whereas the DLVO theory could only partly explain the NP–cell heteroagglomerations. The NP–cell heteroagglomeration for rutile TiO2 and β-form Al2O3 was weak and insensitive to pH or IS. Preferential heteroagglomeration occurred at low pH or high IS for microporous SiO2, while marked heteroagglomeration only occurred under the neutral and low IS condition for anatase TiO2. The heteroagglomeration for spherical SiO2 was insensitive to pH but increased with increasing IS, while the heteroagglomeration for α-form Al2O3 occurred at low pH and irrelevant to IS. The work will shed new light on the bionano interfacial interaction and help to understand biological effects of NPs.
Collapse
|
35
|
Djurišić AB, Leung YH, Ng AMC, Xu XY, Lee PKH, Degger N, Wu RSS. Toxicity of metal oxide nanoparticles: mechanisms, characterization, and avoiding experimental artefacts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:26-44. [PMID: 25303765 DOI: 10.1002/smll.201303947] [Citation(s) in RCA: 204] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 08/20/2014] [Indexed: 05/22/2023]
Abstract
Metal oxide nanomaterials are widely used in practical applications and represent a class of nanomaterials with the highest global annual production. Many of those, such as TiO2 and ZnO, are generally considered non-toxic due to the lack of toxicity of the bulk material. However, these materials typically exhibit toxicity to bacteria and fungi, and there have been emerging concerns about their ecotoxicity effects. The understanding of the toxicity mechanisms is incomplete, with different studies often reporting contradictory results. The relationship between the material properties and toxicity appears to be complex and diifficult to understand, which is partly due to incomplete characterization of the nanomaterial, and possibly due to experimental artefacts in the characterization of the nanomaterial and/or its interactions with living organisms. This review discusses the comprehensive characterization of metal oxide nanomaterials and the mechanisms of their toxicity.
Collapse
|
36
|
Lin X, Li J, Ma S, Liu G, Yang K, Tong M, Lin D. Toxicity of TiO2 nanoparticles to Escherichia coli: effects of particle size, crystal phase and water chemistry. PLoS One 2014; 9:e110247. [PMID: 25310452 PMCID: PMC4195723 DOI: 10.1371/journal.pone.0110247] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Accepted: 09/13/2014] [Indexed: 01/08/2023] Open
Abstract
Controversial and inconsistent results on the eco-toxicity of TiO2 nanoparticles (NPs) are commonly found in recorded studies and more experimental works are therefore warranted to elucidate the nanotoxicity and its underlying precise mechanisms. Toxicities of five types of TiO2 NPs with different particle sizes (10∼50 nm) and crystal phases were investigated using Escherichia coli as a test organism. The effect of water chemistry on the nanotoxicity was also examined. The antibacterial effects of TiO2 NPs as revealed by dose-effect experiments decreased with increasing particle size and rutile content of the TiO2 NPs. More bacteria could survive at higher solution pH (5.0-10.0) and ionic strength (50-200 mg L(-1) NaCl) as affected by the anatase TiO2 NPs. The TiO2 NPs with anatase crystal structure and smaller particle size produced higher content of intracellular reactive oxygen species and malondialdehyde, in line with their greater antibacterial effect. Transmission electron microscopic observations showed the concentration buildup of the anatase TiO2 NPs especially those with smaller particle sizes on the cell surfaces, leading to membrane damage and internalization. These research results will shed new light on the understanding of ecological effects of TiO2 NPs.
Collapse
Affiliation(s)
- Xiuchun Lin
- College of Environmental and Biological Engineering, Putian University, Fujian, China
- Department of Environmental Science, Zhejiang University, Hangzhou, China
| | - Jingyi Li
- Department of Environmental Science, Zhejiang University, Hangzhou, China
| | - Si Ma
- Department of Environmental Science, Zhejiang University, Hangzhou, China
| | - Gesheng Liu
- Department of Environmental Science, Zhejiang University, Hangzhou, China
| | - Kun Yang
- Department of Environmental Science, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou, China
| | - Meiping Tong
- College of Environmental Sciences and Engineering, Peking University, Beijing, P. R. China
| | - Daohui Lin
- Department of Environmental Science, Zhejiang University, Hangzhou, China
- Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Zhejiang University, Hangzhou, China
- * E-mail:
| |
Collapse
|
37
|
Polonini HC, Brandão HM, Raposo NRB, Mouton L, Yéprémian C, Couté A, Brayner R. Ecotoxicological studies of micro- and nanosized barium titanate on aquatic photosynthetic microorganisms. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 154:58-70. [PMID: 24862688 DOI: 10.1016/j.aquatox.2014.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/28/2014] [Accepted: 05/06/2014] [Indexed: 06/03/2023]
Abstract
The interaction between live organisms and micro- or nanosized materials has become a current focus in toxicology. As nanosized barium titanate has gained momentum lately in the medical field, the aims of the present work are: (i) to assess BT toxicity and its mechanisms on the aquatic environment, using two photosynthetic organisms (Anabaena flos-aquae, a colonial cyanobacteria, and Euglena gracilis, a flagellated euglenoid); (ii) to study and correlate the physicochemical properties of BT with its toxic profile; (iii) to compare the BT behavior (and Ba(2+) released ions) and the toxic profile in synthetic (Bold's Basal, BB, or Mineral Medium, MM) and natural culture media (Seine River Water, SRW); and (iv) to address whether size (micro, BT MP, or nano, BT NP) is an issue in BT particles toxicity. Responses such as growth inhibition, cell viability, superoxide dismutase (SOD) activity, adenosine-5-triphosphate (ATP) content and photosynthetic efficiency were evaluated. The main conclusions are: (i) BT have statistically significant toxic effects on E. gracilis growth and viability even in small concentrations (1μgmL(-1)), for both media and since the first 24 h; on the contrary of on A. flos-aquae, to whom the effects were noticeable only for the higher concentrations (after 96 h: ≥75 μg mL(-1) for BT NP and =100 μg mL(-1) for BT MP, in BB; and ≥75 μg mL(-1) for both materials in SRW), in spite of the viability being affected in all concentrations; (ii) the BT behaviors in synthetic and natural culture media were slightly different, being the toxic effects more pronounced when grown in SRW - in this case, a worse physiological state of the organisms in SRW can occur and account for the lower resistance, probably linked to a paucity of nutrients or even a synergistic effect with a contaminant from the river; and (iii) the effects seem to be mediated by induced stress without a direct contact in A. flos-aquae and by direct endocytosis in E. gracilis, but in both organisms the contact with both BT MP and BT NP increased SOD activity and decreased photosynthetic efficiency and intracellular ATP content; and (iv) size does not seem to be an issue in BT particles toxicity since micro- and nano-particles produced significant toxic for the model-organisms.
Collapse
Affiliation(s)
- Hudson C Polonini
- Universidade Federal de Juiz de Fora, Núcleo de Pesquisa e Inovação em Ciências da Saúde (NUPICS), Rua José Lourenço Kelmer, s/n, 36036-900 Juiz de Fora, Brazil.
| | - Humberto M Brandão
- Empresa Brasileira de Pesquisa Agropecuária (Embrapa Gado de Leite), 36038-330 Juiz de Fora, Brazil
| | - Nádia R B Raposo
- Universidade Federal de Juiz de Fora, Núcleo de Pesquisa e Inovação em Ciências da Saúde (NUPICS), Rua José Lourenço Kelmer, s/n, 36036-900 Juiz de Fora, Brazil
| | - Ludovic Mouton
- Université Paris Diderot, Sorbonne Paris Cité, Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS), UMR 7086, CNRS, 15 rue Jean de Baïf, F-75205 Paris Cedex 13, France
| | - Claude Yéprémian
- Muséum National d'Histoire Naturelle, Département RDDM, USM 505, 57 rue Cuvier, F-75005 Paris, France
| | - Alain Couté
- Muséum National d'Histoire Naturelle, Département RDDM, USM 505, 57 rue Cuvier, F-75005 Paris, France
| | - Roberta Brayner
- Université Paris Diderot, Sorbonne Paris Cité, Interfaces, Traitements, Organisation et Dynamique des Systèmes (ITODYS), UMR 7086, CNRS, 15 rue Jean de Baïf, F-75205 Paris Cedex 13, France.
| |
Collapse
|
38
|
Geertsen V, Tabarant M, Spalla O. Behavior and Determination of Titanium Dioxide Nanoparticles in Nitric Acid and River Water by ICP Spectrometry. Anal Chem 2014; 86:3453-60. [DOI: 10.1021/ac403926r] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Valerie Geertsen
- Commissariat à
l’Energie Atomique et aux Energies Alternatives, CEA Saclay,
DSM/IRAMIS/NIMBE/LIONS, CNRS UMR 3299, 91191 Gif Sur Yvette, France
| | - Michel Tabarant
- Commissariat
à
l’Energie Atomique et aux Energies Alternatives, CEA Saclay,
DEN/DANS/DPC/SEARS/LISL, 91191 Gif Sur Yvette, France
| | - Olivier Spalla
- Commissariat à
l’Energie Atomique et aux Energies Alternatives, CEA Saclay,
DSM/IRAMIS/NIMBE/LIONS, CNRS UMR 3299, 91191 Gif Sur Yvette, France
| |
Collapse
|
39
|
Schlur L, Begin-Colin S, Gilliot P, Gallart M, Carré G, Zafeiratos S, Keller N, Keller V, André P, Greneche JM, Hezard B, Desmonts MH, Pourroy G. Effect of ball-milling and Fe-/Al-doping on the structural aspect and visible light photocatalytic activity of TiO2 towards Escherichia coli bacteria abatement. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 38:11-9. [PMID: 24656347 DOI: 10.1016/j.msec.2014.01.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 11/30/2013] [Accepted: 01/13/2014] [Indexed: 10/25/2022]
Abstract
Escherichia coli abatement was studied in liquid phase under visible light in the presence of two commercial titania photocatalysts, and of Fe- and Al-doped titania samples prepared by high energy ball-milling. The two commercial titania photocatalysts, Aeroxide P25 (Evonik industries) exhibiting both rutile and anatase structures and MPT625 (Ishihara Sangyo Kaisha), a Fe-, Al-, P- and S-doped titania exhibiting only the rutile phase, are active suggesting that neither the structure nor the doping is the driving parameter. Although the MPT625 UV-visible spectrum is shifted towards the visible domain with respect to the P25 one, the effect on bacteria is not increased. On the other hand, the ball milled iron-doped P25 samples exhibit low activities in bacteria abatement under visible light due to charge recombinations unfavorable to catalysis as shown by photoluminescence measurements. While doping elements are in interstitial positions within the rutile structure in MPT625 sample, they are located at the surface in ball milled samples and in isolated octahedral units according to (57)Fe Mössbauer spectrometry. The location of doping elements at the surface is suggested to be responsible for the sample cytotoxicity observed in the dark.
Collapse
Affiliation(s)
- Laurent Schlur
- Institut de Physique et Chimie des Matériaux de Strasbourg IPCMS, UMR 7504, CNRS-ECPM-Université de Strasbourg, 23 rue du loess BP 43 67034 Strasbourg cedex 2, France
| | - Sylvie Begin-Colin
- Institut de Physique et Chimie des Matériaux de Strasbourg IPCMS, UMR 7504, CNRS-ECPM-Université de Strasbourg, 23 rue du loess BP 43 67034 Strasbourg cedex 2, France
| | - Pierre Gilliot
- Institut de Physique et Chimie des Matériaux de Strasbourg IPCMS, UMR 7504, CNRS-ECPM-Université de Strasbourg, 23 rue du loess BP 43 67034 Strasbourg cedex 2, France
| | - Mathieu Gallart
- Institut de Physique et Chimie des Matériaux de Strasbourg IPCMS, UMR 7504, CNRS-ECPM-Université de Strasbourg, 23 rue du loess BP 43 67034 Strasbourg cedex 2, France
| | - Gaëlle Carré
- Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé (ICPEES), CNRS, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France; Laboratoire de Biophotonique et Pharmacologie, UMR 7213, CNRS-Université de Strasbourg, 74 route du Rhin, CS 60024, 67401 Illkirch Cedex, France
| | - Spiros Zafeiratos
- Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé (ICPEES), CNRS, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France
| | - Nicolas Keller
- Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé (ICPEES), CNRS, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France
| | - Valérie Keller
- Institut de Chimie et Procédés pour l'Énergie, l'Environnement et la Santé (ICPEES), CNRS, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg, France
| | - Philippe André
- Laboratoire de Biophotonique et Pharmacologie, UMR 7213, CNRS-Université de Strasbourg, 74 route du Rhin, CS 60024, 67401 Illkirch Cedex, France
| | - Jean-Marc Greneche
- LUNAM, Université du Maine, Institut des Molécules et Matériaux du Mans IMMM, UMR, CNRS 6283, 72085 Le Mans Cedex 9, France
| | - Bernard Hezard
- Aérial, Parc d'Innovation, rue Laurent Fries, F-67412 Illkirch, France
| | | | - Geneviève Pourroy
- Institut de Physique et Chimie des Matériaux de Strasbourg IPCMS, UMR 7504, CNRS-ECPM-Université de Strasbourg, 23 rue du loess BP 43 67034 Strasbourg cedex 2, France.
| |
Collapse
|
40
|
Dalai S, Pakrashi S, Joyce Nirmala M, Chaudhri A, Chandrasekaran N, Mandal AB, Mukherjee A. Cytotoxicity of TiO₂ nanoparticles and their detoxification in a freshwater system. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2013; 138-139:1-11. [PMID: 23680676 DOI: 10.1016/j.aquatox.2013.04.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 04/16/2013] [Accepted: 04/18/2013] [Indexed: 05/03/2023]
Abstract
In the current study, two aspects concerning (i) the cytotoxicity potential of TiO₂ nanoparticles (NPs) toward freshwater algal isolate Scenedesmus obliquus and (ii) the potential detoxification of NPs by the microalgae were assessed under light (UV-illumination) and dark conditions at low exposure levels (≤1 μg/mL), using sterile freshwater as the test medium. The statistically significant reduction in cell viability, increase in reactive oxygen species production and membrane permeability (light vs. dark) suggested photo-induced toxicity of TiO₂ NPs. The electron micrographs demonstrated adsorption of the NPs onto the cell surface and substantiated their internalization/uptake. The fluorescence micrographs and the confocal laser scanning (CLSM) images suggested the absence of a definite/intact nucleus in the light treated cells pointing toward the probable genotoxic effects of NPs. In a separate three cycle experiment, a continuous decrease in the cytotoxicity was observed, whereas, at the end of each cycle only fresh algae were added to the supernatant containing NPs from the previous cycle. The decreasing concentrations of the NPs in the subsequent cycles owing to agglomeration-sedimentation processes exacerbated by the algal interactions played a crucial role in the detoxification. In addition, the exo-polymeric substances produced by the cells could have rendered the available NPs less reactive, thereby, enhancing the detoxification effects.
Collapse
|