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Abedi M, Ghasemi Y, Nemati MM. Nanotechnology in toothpaste: Fundamentals, trends, and safety. Heliyon 2024; 10:e24949. [PMID: 38317872 PMCID: PMC10838805 DOI: 10.1016/j.heliyon.2024.e24949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 02/07/2024] Open
Abstract
Several studies have revealed that healthcare nanomaterials are widely used in numerous areas of dentistry, including prevention, diagnosis, treatment, and repair. Nanomaterials in dental cosmetics are utilized to enhance the efficacy of toothpaste and other mouthwashes. Nanoparticles are added to toothpastes for a variety of reasons, including dental decay prevention, remineralization, hypersensitivity reduction, brightening, and antibacterial qualities. In this review, the benefits and uses of many common nanomaterials found in toothpaste are outlined. Additionally, the capacity and clinical applications of nanoparticles as anti-bacterial, whitening, hypersensitivity, and remineralizing agents in the treatment of dental problems and periodontitis are discussed.
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Affiliation(s)
- Mehdi Abedi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Younes Ghasemi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Mehdi Nemati
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Buccal films: A review of therapeutic opportunities, formulations & relevant evaluation approaches. J Control Release 2022; 352:1071-1092. [PMID: 36351519 DOI: 10.1016/j.jconrel.2022.10.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 10/26/2022] [Accepted: 10/28/2022] [Indexed: 11/19/2022]
Abstract
The potential of the mucoadhesive film technology is hard to ignore, owing to perceived superior patient acceptability versus buccal tablets, and significant therapeutic opportunities compared to conventional oral drug delivery systems, especially for those who suffer from dysphagia. In spite of this, current translation from published literature into the commercial marketplace is virtually non-existent, with no authorised mucoadhesive buccal films available in the UK and very few available in the USA. This review seeks to provide an overview of the mucoadhesive buccal film technology and identify key areas upon which to focus scientific efforts to facilitate the wider adoption of this patient-centric dosage form. Several indications and opportunities for development were identified, while discussing the patient-related factors influencing the use of these dosage forms. In addition, an overview of the technologies behind the manufacturing of these films was provided, highlighting manufacturing methods like solvent casting, hot melt extrusion, inkjet printing and three-dimensional printing. Over thirty mucoadhesive polymers were identified as being used in film formulations, with details surrounding their mucoadhesive capabilities as well as their inclusion alongside other key formulation constituents provided. Lastly, the importance of physiologically relevant in vitro evaluation methodologies was emphasised, which seek to improve in vivo correlations, potentially leading to better translation of mucoadhesive buccal films from the literature into the commercial marketplace.
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Rolo D, Assunção R, Ventura C, Alvito P, Gonçalves L, Martins C, Bettencourt A, Jordan P, Vital N, Pereira J, Pinto F, Matos P, Silva MJ, Louro H. Adverse Outcome Pathways Associated with the Ingestion of Titanium Dioxide Nanoparticles-A Systematic Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193275. [PMID: 36234403 PMCID: PMC9565478 DOI: 10.3390/nano12193275] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 05/15/2023]
Abstract
Titanium dioxide nanoparticles (TiO2-NPs) are widely used, and humans are exposed through food (E171), cosmetics (e.g., toothpaste), and pharmaceuticals. The oral and gastrointestinal (GIT) tract are the first contact sites, but it may be systemically distributed. However, a robust adverse outcome pathway (AOP) has not been developed upon GIT exposure to TiO2-NPs. The aim of this review was to provide an integrative analysis of the published data on cellular and molecular mechanisms triggered after the ingestion of TiO2-NPs, proposing plausible AOPs that may drive policy decisions. A systematic review according to Prisma Methodology was performed in three databases of peer-reviewed literature: Pubmed, Scopus, and Web of Science. A total of 787 records were identified, screened in title/abstract, being 185 used for data extraction. The main endpoints identified were oxidative stress, cytotoxicity/apoptosis/cell death, inflammation, cellular and systemic uptake, genotoxicity, and carcinogenicity. From the results, AOPs were proposed where colorectal cancer, liver injury, reproductive toxicity, cardiac and kidney damage, as well as hematological effects stand out as possible adverse outcomes. The recent transgenerational studies also point to concerns with regard to population effects. Overall, the findings further support a limitation of the use of TiO2-NPs in food, announced by the European Food Safety Authority (EFSA).
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Affiliation(s)
- Dora Rolo
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- ToxOmics—Centre for Toxicogenomics and Human Health, NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
- Correspondence:
| | - Ricardo Assunção
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- CESAM, Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
- IUEM, Instituto Universitário Egas Moniz, Egas Moniz-Cooperativa de Ensino Superior, CRL, 2829-511 Monte de Caparica, Portugal
| | - Célia Ventura
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- ToxOmics—Centre for Toxicogenomics and Human Health, NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Paula Alvito
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- CESAM, Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Lídia Gonçalves
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal
| | - Carla Martins
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal
- Comprehensive Health Research Center (CHRC), 1169-056 Lisbon, Portugal
| | - Ana Bettencourt
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal
| | - Peter Jordan
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Nádia Vital
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- ToxOmics—Centre for Toxicogenomics and Human Health, NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
- NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Joana Pereira
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Fátima Pinto
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- ToxOmics—Centre for Toxicogenomics and Human Health, NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Paulo Matos
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Maria João Silva
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- ToxOmics—Centre for Toxicogenomics and Human Health, NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
| | - Henriqueta Louro
- National Institute of Health Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal
- ToxOmics—Centre for Toxicogenomics and Human Health, NOVA Medical School, Universidade NOVA de Lisboa, 1169-056 Lisbon, Portugal
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Cornu R, Béduneau A, Martin H. Ingestion of titanium dioxide nanoparticles: a definite health risk for consumers and their progeny. Arch Toxicol 2022; 96:2655-2686. [PMID: 35895099 DOI: 10.1007/s00204-022-03334-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 07/05/2022] [Indexed: 01/13/2023]
Abstract
Titanium dioxide (TiO2) is one of the most commonly used nanomaterials in the world. Additive E171, which is used in the food industry, contains a nanometric particle fraction of TiO2. Oral exposure of humans to these nanoparticles (NPs) is intensive, leading to the question of their impact on health. Daily oral intake by rats of amounts of E171 that are relevant to human intake has been associated with an increased risk of chronic intestinal inflammation and carcinogenesis. Due to their food preferences, children are very exposed to this NP. Furthermore, maternal-foetal transfer of TiO2 NPs during pregnancy, as well as exposure of the offspring by breastfeeding, have been recently described. In France, the use of E171 in the production of foodstuffs was suspended in January 2020 as a precautionary measure. To provide some answers to this public health problem and help global regulatory agencies finalize their decisions, we reviewed in vitro and in vivo studies that address the effects of TiO2 NPs through oral exposure, especially their effects on the gastrointestinal tract, one of the most exposed tissues. Our review also highlights the effects of exposure on the offspring during pregnancy and by breastfeeding.
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Affiliation(s)
- Raphaël Cornu
- PEPITE EA4267, Univ. Bourgogne Franche-Comté, F-25000, Besançon, France
| | - Arnaud Béduneau
- PEPITE EA4267, Univ. Bourgogne Franche-Comté, F-25000, Besançon, France
| | - Hélène Martin
- PEPITE EA4267, Univ. Bourgogne Franche-Comté, F-25000, Besançon, France.
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Talaśka K, Wojtkowiak D, Wilczyński D, Ferreira A. Computational methodology for drug delivery to the inner ear using magnetic nanoparticle aggregates. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2022; 221:106860. [PMID: 35576687 DOI: 10.1016/j.cmpb.2022.106860] [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: 12/13/2021] [Revised: 04/16/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND OBJECTIVE The main goal of the proposed study is to improve the efficiency of the ear treatment via targeted drug delivery to the inner ear, i.e. the cochlea. Although pharmacotherapy has been proposed as a solution to prevent damage or restore functionality to hair cells, the main challenge in such treatments is ensuring adequate drug delivery to the cells. To this end, we present a methodology for the evaluation of the magnetic forces needed to move magnetic particle nanorobots (abbreviated as MNP) and their aggregates through the cochlea round window membrane (RWM). METHODS The FEM - Lagrangian-Eulerian approach (Abaqus software) was used to determine the specific parameters of movement of the nanoparticles crossing the RWM. This method results in a high consistency of FEM simulations and in-vivo experimental results in regards to the required magnetic force during the movement of spherical nanoparticles with a given viscosity ηave. Based on the analysis of the experimental studies found in subject literature, the sizes of the MNPs and their aggregates able to cross RWM with and without the application of magnetic force FM have been determined. RESULTS The present work accounts for both the experimental and theoretical aspects of these investigations. Presented research confirms the definite usability of the Lagrange-Euler method for the precise determination of the required magnetic force value FM to control the accelerated motion of MNP aggregates of complex shapes through RWM. It is possible to determine the predominant parameters with a precision of less than 5% for single-layer aggregates and spatial aggregates crossing the RWM. It can be concluded that the MNPs and their aggregates should not be larger than 500-750 nm to cross the RWM with high velocities of penetration close to 800 nm/s for magnetic forces of hundreds 10-14 Newtons. CONCLUSIONS The proposed Lagrangian-Eulerian approach is capable of accurately predicting the movement parameters of MNP aggregates of irregular shape that are close to the experimental test cases. The presented method can serve as a supplementary tool for the design of drug delivery systems to the inner ear using MNPs.
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Affiliation(s)
- Krzysztof Talaśka
- Institute of Machine Design, Poznan University of Technology, Piotrowo 3, Poznań 61-138, Poland.
| | - Dominik Wojtkowiak
- Institute of Machine Design, Poznan University of Technology, Piotrowo 3, Poznań 61-138, Poland
| | - Dominik Wilczyński
- Institute of Machine Design, Poznan University of Technology, Piotrowo 3, Poznań 61-138, Poland
| | - Antoine Ferreira
- Laboratoire PRISME, Institut National des Sciences Appliquées (INSA) Centre Val de Loire, Bourges, France.
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Fakhrullin R, Nigamatzyanova L, Fakhrullina G. Dark-field/hyperspectral microscopy for detecting nanoscale particles in environmental nanotoxicology research. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 772:145478. [PMID: 33571774 DOI: 10.1016/j.scitotenv.2021.145478] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/22/2021] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Nanoscale contaminants (including engineered nanoparticles and nanoplastics) pose a significant threat to organisms and environment. Rapid and non-destructive detection and identification of nanosized materials in cells, tissues and organisms is still challenging, although a number of conventional methods exist. These approaches for nanoparticles imaging and characterisation both inside the cytoplasm and on the cell or tissue outer surfaces, such as electron or scanning probe microscopies, are unquestionably potent tools, having excellent resolution and supplemented with chemical analysis capabilities. However, imaging and detection of nanomaterials in situ, in wet unfixed and even live samples, such as living isolated cells, microorganisms, protozoans and miniature invertebrates using electron microscopy is practically impossible, because of the elaborate sample preparation requiring chemical fixation, contrast staining, matrix embedding and exposure into vacuum. Atomic force microscopy, in several cases, can be used for imaging and mechanical analysis of live cells and organisms under ambient conditions, however this technique allows for investigation of surfaces. Therefore, a different approach allowing for imaging and differentiation of nanoscale particles in wet samples is required. Dark-field microscopy as an optical microscopy technique has been popular among researchers, mostly for imaging relatively large specimens. In recent years, the so-called "enhanced dark field" microscopy based on using higher numerical aperture light condensers and variable numerical aperture objectives has emegred, which allows for imaging of nanoscale particles (starting from 5 nm nanospheres) using almost conventional optical microscopy methodology. Hyperspectral imaging can turn a dark-field optical microscope into a powerful chemical characterisation tool. As a result, this technique is becoming popular in environmental nanotoxicology studies. In this Review Article we introduce the reader into the methodology of enhanced dark-field and dark-field-based hyperspectral microscopy, covering the most important advances in this rapidly-expanding area of environmental nanotoxicology.
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Affiliation(s)
- Rawil Fakhrullin
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı 18, Kazan 420008, Republic of Tatarstan, Russian Federation.
| | - Läysän Nigamatzyanova
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı 18, Kazan 420008, Republic of Tatarstan, Russian Federation
| | - Gölnur Fakhrullina
- Institute of Fundamental Medicine and Biology, Kazan Federal University, Kreml uramı 18, Kazan 420008, Republic of Tatarstan, Russian Federation
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Gillois K, Stoffels C, Leveque M, Fourquaux I, Blesson J, Mils V, Cambier S, Vignard J, Terrisse H, Mirey G, Audinot JN, Theodorou V, Ropers MH, Robert H, Mercier-Bonin M. Repeated exposure of Caco-2 versus Caco-2/HT29-MTX intestinal cell models to (nano)silver in vitro: Comparison of two commercially available colloidal silver products. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:142324. [PMID: 33254900 DOI: 10.1016/j.scitotenv.2020.142324] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 06/12/2023]
Abstract
Colloidal silver products are sold for a wide range of disinfectant and health applications. This has increased the potential for human exposure to silver nanoparticles (AgNPs) and ions (Ag+), for which oral ingestion is considered to be a major route of exposure. Our objective was to evaluate and compare the toxicity of two commercially available colloidal silver products on two human intestinal epithelial models under realistic exposure conditions. Mesosilver™ and AgC were characterized and a concentration range between 0.1 and 12 μg/mL chosen. Caco-2 cells vs. co-culture of Caco-2 and mucus-secreting HT29-MTX cells (90/10) were used. Repeated exposure was carried out to determine cell viability over 18 days of cell differentiation in 24-well plates. Selected concentrations (0.1, 1, and 3 μg/mL) were tested on cells cultured in E-plates and Transwells with the same repeated exposure regimen, to determine cell impedance, and cell viability and trans-epithelial electrical resistance (TEER), respectively. Silver uptake, intracellular localisation, and translocation were determined by CytoViva™, HIM-SIMS, and ICP-MS. Genotoxicity was determined on acutely-exposed proliferating Caco-2 cells by γH2AX immunofluorescence staining. Repeated exposure of a given concentration of AgC, which is composed solely of ionic silver, generally exerted more toxic effects on Caco-2 cells than Mesosilver™, which contains a mix of AgNPs and ionic silver. Due to its patchy structure, the presence of mucus in the Caco-2/HT29-MTX co-culture only slightly mitigated the deleterious effects on cell viability. Increased genotoxicity was observed for AgC on proliferating Caco-2 cells. Silver uptake, intracellular localisation, and translocation were similar. In conclusion, Mesosilver™ and AgC colloidal silver products show different levels of gut toxicity due to the forms of distinct silver (AgNPs and/or Ag+) contained within. This study highlights the applicability of high-resolution (chemical) imaging to detect and localize silver and provides insights into its uptake mechanisms, intracellular fate and cellular effects.
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Affiliation(s)
- Kévin Gillois
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Charlotte Stoffels
- Luxembourg Institute of Science and Technology (LIST), 41, rue de Brill, Belvaux L-4422, Luxembourg
| | - Mathilde Leveque
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Isabelle Fourquaux
- Centre de Microscopie Électronique Appliquée à la Biologie, CMEAB, 133 route de Narbonne, 31062 Toulouse, France
| | - Justine Blesson
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Valérie Mils
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Sébastien Cambier
- Luxembourg Institute of Science and Technology (LIST), 41, rue de Brill, Belvaux L-4422, Luxembourg
| | - Julien Vignard
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Hélène Terrisse
- Université de Nantes, CNRS, Institut des Matériaux Jean Rouxel, IMN, F-44000 Nantes, France
| | - Gladys Mirey
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Jean-Nicolas Audinot
- Luxembourg Institute of Science and Technology (LIST), 41, rue de Brill, Belvaux L-4422, Luxembourg
| | - Vassilia Theodorou
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | | | - Hervé Robert
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France
| | - Muriel Mercier-Bonin
- Toxalim, Université de Toulouse, INRAE, INP-ENVT, INP-EI-Purpan, Université de Toulouse 3 Paul Sabatier, Toulouse, France.
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Hepato(Geno)Toxicity Assessment of Nanoparticles in a HepG2 Liver Spheroid Model. NANOMATERIALS 2020; 10:nano10030545. [PMID: 32197356 PMCID: PMC7153628 DOI: 10.3390/nano10030545] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/03/2020] [Accepted: 03/11/2020] [Indexed: 12/19/2022]
Abstract
(1) In compliance with the 3Rs policy to reduce, refine and replace animal experiments, the development of advanced in vitro models is needed for nanotoxicity assessment. Cells cultivated in 3D resemble organ structures better than 2D cultures. This study aims to compare cytotoxic and genotoxic responses induced by titanium dioxide (TiO2), silver (Ag) and zinc oxide (ZnO) nanoparticles (NPs) in 2D monolayer and 3D spheroid cultures of HepG2 human liver cells. (2) NPs were characterized by electron microscopy, dynamic light scattering, laser Doppler anemometry, UV-vis spectroscopy and mass spectrometry. Cytotoxicity was investigated by the alamarBlue assay and confocal microscopy in HepG2 monolayer and spheroid cultures after 24 h of NP exposure. DNA damage (strand breaks and oxidized base lesions) was measured by the comet assay. (3) Ag-NPs were aggregated at 24 h, and a substantial part of the ZnO-NPs was dissolved in culture medium. Ag-NPs induced stronger cytotoxicity in 2D cultures (EC50 3.8 µg/cm2) than in 3D cultures (EC50 > 30 µg/cm2), and ZnO-NPs induced cytotoxicity to a similar extent in both models (EC50 10.1-16.2 µg/cm2). Ag- and ZnO-NPs showed a concentration-dependent genotoxic effect, but the effect was not statistically significant. TiO2-NPs showed no toxicity (EC50 > 75 µg/cm2). (4) This study shows that the HepG2 spheroid model is a promising advanced in vitro model for toxicity assessment of NPs.
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Dréno B, Alexis A, Chuberre B, Marinovich M. Safety of titanium dioxide nanoparticles in cosmetics. J Eur Acad Dermatol Venereol 2019; 33 Suppl 7:34-46. [DOI: 10.1111/jdv.15943] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/03/2019] [Indexed: 12/31/2022]
Affiliation(s)
- B. Dréno
- Onco‐Dermatology Department CHU Nantes CRCINA University Nantes Nantes France
| | - A. Alexis
- Department of Dermatology Icahn School of Medicine at Mount Sinai New York NY USA
| | - B. Chuberre
- L'Oréal Cosmetique Active International Levallois‐Perret France
| | - M. Marinovich
- Department of Pharmacological and Biomolecular Sciences University of Milan Milan Italy
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10
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Bai Q, Lavenas M, Vauriot L, Le Tréquesser Q, Hao J, Weill F, Delville JP, Delville MH. Hydrothermal Transformation of Titanate Scrolled Nanosheets to Anatase over a Wide pH Range and Contribution of Triethanolamine and Oleic Acid to Control the Morphology. Inorg Chem 2019; 58:2588-2598. [DOI: 10.1021/acs.inorgchem.8b03197] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qingguo Bai
- ICMCB, CNRS, Université Bordeaux, UMR 5026, 33608 Pessac, France
- LOMA, Université Bordeaux, CNRS, UMR 5798, 33405 Talence, France
| | - Magali Lavenas
- ICMCB, CNRS, Université Bordeaux, UMR 5026, 33608 Pessac, France
| | - Laetitia Vauriot
- ICMCB, CNRS, Université Bordeaux, UMR 5026, 33608 Pessac, France
- LOMA, Université Bordeaux, CNRS, UMR 5798, 33405 Talence, France
| | | | - Junjie Hao
- ICMCB, CNRS, Université Bordeaux, UMR 5026, 33608 Pessac, France
- LOMA, Université Bordeaux, CNRS, UMR 5798, 33405 Talence, France
| | - Francois Weill
- ICMCB, CNRS, Université Bordeaux, UMR 5026, 33608 Pessac, France
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Pokrowiecki R, Pałka K, Mielczarek A. Nanomaterials in dentistry: a cornerstone or a black box? Nanomedicine (Lond) 2018; 13:639-667. [DOI: 10.2217/nnm-2017-0329] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Aim: The studies on tooth structure provided basis for nanotechnology-based dental treatment approaches known as nanodentistry which aims at detection and treatment of oral pathologies, such as dental caries and periodontal diseases, insufficiently being treated by conventional materials or drugs. This review aims at defining the role of nanodentistry in the medical area, its potential and hazards. Materials & methods: To validate these issues, current literature on nanomaterials for dental applications was critically reviewed. Results: Nanomaterials for teeth restoration, bone regeneration and oral implantology exhibit better mechanical properties and provide more efficient esthetic outcome. However, still little is known about influence of long-term function of such biomaterials in the living organism. Conclusion: As application of nanomaterials in industry and medical-related sciences is still expanding, more information is needed on how such nano-dental materials may interfere with oral cavity, GI tract and general health.
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Affiliation(s)
- Rafał Pokrowiecki
- Department of Head & Neck Surgery – Maxillofacial Surgery, Otolaryngology & Ophthalmology, Prof Stanislaw Popowski Voivoid Children Hospital, Żołnierska 18 A10-561 Olsztyn, Poland
| | - Krzysztof Pałka
- Faculty of Mechanical Engineering, Lublin University of Technology, Lublin, Poland
| | - Agnieszka Mielczarek
- Department of Conservative Dentistry, Medical University of Warsaw, Warsaw, Poland
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12
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Konstantinova V, Ibrahim M, Lie SA, Birkeland ES, Neppelberg E, Marthinussen MC, Costea DE, Cimpan MR. Nano-TiO 2 penetration of oral mucosa: in vitro analysis using 3D organotypic human buccal mucosa models. J Oral Pathol Med 2017; 46:214-222. [PMID: 27387227 PMCID: PMC5347879 DOI: 10.1111/jop.12469] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Oral cavity is a doorway for a variety of products containing titanium dioxide (TiO2 ) nanoparticles (NPs) (nano-TiO2 ) such as food additives, oral healthcare products and dental materials. Their potential to penetrate and affect normal human oral mucosa is not yet determined. OBJECTIVES To evaluate the ability of nano-TiO2 to penetrate the in vitro reconstructed normal human buccal mucosa (RNHBM). METHODS RNHBM was generated from primary normal human oral keratinocytes and fibroblasts isolated from buccal oral mucosa of healthy patients (n = 6). The reconstructed tissues were exposed after 10 days to clinically relevant concentrations of spherical or spindle rutile nano-TiO2 in suspension for short (20 min) and longer time (24 h). Ultrahigh-resolution imaging (URI) microscopy (CytoViva™ , Auburn, AL, USA) was used to assess the depth of penetration into reconstructed tissues. RESULTS Ultrahigh-resolution imaging microscopy demonstrated the presence of nano-TiO2 mostly in the epithelium of RNHBM at both 20 min and 24-h exposure, and this was shape and doze dependent at 24 h of exposure. The depth of penetration diminished in time at higher concentrations. The exposed epithelium showed increased desquamation but preserved thickness. CONCLUSION Nano-TiO2 is able to penetrate RNHBM and to activate its barrier function in a doze- and time-dependent manner.
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Affiliation(s)
- Victoria Konstantinova
- Department of Clinical DentistryFaculty of Medicine and DentistryUniversity of BergenBergenNorway
- Gade Laboratory for PathologyDepartment of Clinical MedicineFaculty of Medicine and DentistryUniversity of BergenBergenNorway
- Department of Global Public Health and Primary CareCentre for International HealthFaculty of Medicine and DentistryUniversity of BergenBergenNorway
| | - Mohamed Ibrahim
- Department of Clinical DentistryFaculty of Medicine and DentistryUniversity of BergenBergenNorway
- Department of Global Public Health and Primary CareCentre for International HealthFaculty of Medicine and DentistryUniversity of BergenBergenNorway
| | - Stein A. Lie
- Department of Clinical DentistryFaculty of Medicine and DentistryUniversity of BergenBergenNorway
| | - Eivind Salmorin Birkeland
- Department of Clinical DentistryFaculty of Medicine and DentistryUniversity of BergenBergenNorway
- Gade Laboratory for PathologyDepartment of Clinical MedicineFaculty of Medicine and DentistryUniversity of BergenBergenNorway
| | - Evelyn Neppelberg
- Department of Oral SurgeryInstitute of Clinical DentistryUniversity of BergenBergenNorway
- Department of Ear‐Nose‐and‐Throat SurgeryHaukeland University HospitalBergenNorway
| | - Mihaela Cuida Marthinussen
- Department of Clinical DentistryFaculty of Medicine and DentistryUniversity of BergenBergenNorway
- Oral Health Centre of Expertise in Western NorwayHordalandNorway
| | - Daniela Elena Costea
- Gade Laboratory for PathologyDepartment of Clinical MedicineFaculty of Medicine and DentistryUniversity of BergenBergenNorway
- Department of Global Public Health and Primary CareCentre for International HealthFaculty of Medicine and DentistryUniversity of BergenBergenNorway
- Department of PathologyHaukeland University HospitalBergenNorway
| | - Mihaela R. Cimpan
- Department of Clinical DentistryFaculty of Medicine and DentistryUniversity of BergenBergenNorway
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