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Taylor AT, Iraganje E, Lai EPC. A method for the separation of TiO 2 nanoparticles from Water through encapsulation with lecithin liposomes followed by adsorption onto poly(L-lysine) coated glass surfaces. Colloids Surf B Biointerfaces 2020; 187:110732. [PMID: 31911038 DOI: 10.1016/j.colsurfb.2019.110732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/13/2019] [Accepted: 12/13/2019] [Indexed: 11/19/2022]
Abstract
Increasing use of nanomaterials in the consumer and pharmaceutical industries has led to emerging contamination by released nanoparticles in wastewater and drinking water, causing major concerns for public health. Titanium dioxide (TiO2) nanoparticles are one of the major nanoparticles of growing concern with a strong need for efficient removal. In this work, removal of TiO2 nanoparticles from water was investigated by first coating with polydopamine (PDA) and then encapsulating within lecithin liposomes for adsorption onto poly-l-lysine (PLL) coated glass surfaces. The PLL coating was confirmed using atomic force microscopy, with a thickness of 30 nm. An average percent removal of 58% with a standard deviation of 18% was obtained for concentrations ranging from 5 mg/L to 125 mg/L following capture experiments. This method provides a promising solution to alleviate the potential health hazard caused by TiO2 nanoparticles. It is minimally affected by such water quality variables as alkalinity, ionic strength and humic acid. No coagulation, flocculation and sedimentation stages are necessary.
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Affiliation(s)
- Adam T Taylor
- Ottawa-Carleton Chemistry Institute, Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada
| | - Elysee Iraganje
- Ottawa-Carleton Chemistry Institute, Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada
| | - Edward P C Lai
- Ottawa-Carleton Chemistry Institute, Department of Chemistry, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada.
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2
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Development of an ex vivo preclinical respiratory model of idiopathic pulmonary fibrosis for aerosol regional studies. Sci Rep 2019; 9:17949. [PMID: 31784683 PMCID: PMC6884587 DOI: 10.1038/s41598-019-54479-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/12/2019] [Indexed: 01/27/2023] Open
Abstract
Idiopathic pulmonary fibrosis is a progressive disease with unsatisfactory systemic treatments. Aerosol drug delivery to the lungs is expected to be an interesting route of administration. However, due to the alterations of lung compliance caused by fibrosis, local delivery remains challenging. This work aimed to develop a practical, relevant and ethically less restricted ex vivo respiratory model of fibrotic lung for regional aerosol deposition studies. This model is composed of an Ear-Nose-Throat replica connected to a sealed enclosure containing an ex vivo porcine respiratory tract, which was modified to mimic the mechanical properties of fibrotic lung parenchyma - i.e. reduced compliance. Passive respiratory mechanics were measured. 81mKr scintigraphies were used to assess the homogeneity of gas-ventilation, while regional aerosol deposition was assessed with 99mTc-DTPA scintigraphies. We validated the procedure to induce modifications of lung parenchyma to obtain aimed variation of compliance. Compared to the healthy model, lung respiratory mechanics were modified to the same extent as IPF-suffering patients. 81mKr gas-ventilation and 99mTc-DTPA regional aerosol deposition showed results comparable to clinical studies, qualitatively. This ex vivo respiratory model could simulate lung fibrosis for aerosol regional deposition studies giving an interesting alternative to animal experiments, accelerating and facilitating preclinical studies before clinical trials.
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Montigaud Y, Périnel S, Dubus JC, Leclerc L, Suau M, Goy C, Clotagatide A, Prévôt N, Pourchez J. Development of an ex vivo respiratory pediatric model of bronchopulmonary dysplasia for aerosol deposition studies. Sci Rep 2019; 9:5720. [PMID: 30952897 PMCID: PMC6450907 DOI: 10.1038/s41598-019-42103-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 03/20/2019] [Indexed: 01/03/2023] Open
Abstract
Ethical restrictions are limitations of in vivo inhalation studies, on humans and animal models. Thus, in vitro or ex vivo anatomical models offer an interesting alternative if limitations are clearly identified and if extrapolation to human is made with caution. This work aimed to develop an ex vivo infant-like respiratory model of bronchopulmonary dysplasia easy to use, reliable and relevant compared to in vivo infant data. This model is composed of a 3D-printed head connected to a sealed enclosure containing a leporine thorax. Physiological data and pleural-mimicking depressions were measured for chosen respiratory rates. Homogeneity of ventilation was assessed by 81mkrypton scintigraphies. Regional radioaerosol deposition was quantified with 99mtechnetium-diethylene triamine pentaacetic acid after jet nebulization. Tidal volumes values are ranged from 33.16 ± 7.37 to 37.44 ± 7.43 mL and compliance values from 1.78 ± 0.65 to 1.85 ± 0.99 mL/cmH2O. Ventilation scintigraphies showed a homogenous ventilation with asymmetric repartition: 56.94% ± 9.4% in right lung and 42.83% ± 9.36 in left lung. Regional aerosol deposition in lungs exerted 2.60% ± 2.24% of initial load of radioactivity. To conclude the anatomical model satisfactorily mimic a 3-months old BPD-suffering bronchopulmonary dysplasia and can be an interesting tool for aerosol regional deposition studies.
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Affiliation(s)
- Yoann Montigaud
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, INSERM, U 1059 Sainbiose, Centre CIS, F - 42023, Saint-Etienne, France
| | - Sophie Périnel
- INSERM U 1059 Sainbiose, Université Jean Monnet, F-42023, Saint-Etienne, France
- CHU Saint-Etienne, Saint-Etienne, F-42055, France
| | - Jean-Christophe Dubus
- Médecine infantile, pneumo-allergologie, CRCM & CNRS, URMITE 6236, Assistance publique-Hôpitaux de Marseille, 13385, Marseille cedex 5, France
| | - Lara Leclerc
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, INSERM, U 1059 Sainbiose, Centre CIS, F - 42023, Saint-Etienne, France
| | - Marie Suau
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, INSERM, U 1059 Sainbiose, Centre CIS, F - 42023, Saint-Etienne, France
| | - Clémence Goy
- INSERM U 1059 Sainbiose, Université Jean Monnet, F-42023, Saint-Etienne, France
- CHU Saint-Etienne, Saint-Etienne, F-42055, France
| | - Anthony Clotagatide
- INSERM U 1059 Sainbiose, Université Jean Monnet, F-42023, Saint-Etienne, France
- CHU Saint-Etienne, Saint-Etienne, F-42055, France
| | - Nathalie Prévôt
- INSERM U 1059 Sainbiose, Université Jean Monnet, F-42023, Saint-Etienne, France
- CHU Saint-Etienne, Saint-Etienne, F-42055, France
| | - Jérémie Pourchez
- Mines Saint-Etienne, Univ Lyon, Univ Jean Monnet, INSERM, U 1059 Sainbiose, Centre CIS, F - 42023, Saint-Etienne, France.
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Ammendolia MG, Iosi F, Maranghi F, Tassinari R, Cubadda F, Aureli F, Raggi A, Superti F, Mantovani A, De Berardis B. Short-term oral exposure to low doses of nano-sized TiO 2 and potential modulatory effects on intestinal cells. Food Chem Toxicol 2017; 102:63-75. [DOI: 10.1016/j.fct.2017.01.031] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/23/2017] [Accepted: 01/30/2017] [Indexed: 12/22/2022]
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Hazardous Effects of Titanium Dioxide Nanoparticles in Ecosystem. Bioinorg Chem Appl 2017; 2017:4101735. [PMID: 28373829 PMCID: PMC5360948 DOI: 10.1155/2017/4101735] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 02/08/2017] [Indexed: 01/21/2023] Open
Abstract
Although nanoparticles (NPs) have made incredible progress in the field of nanotechnology and biomedical research and their applications are demanded throughout industrial world particularly over the past decades, little is known about the fate of nanoparticles in ecosystem. Concerning the biosafety of nanotechnology, nanotoxicity is going to be the second most priority of nanotechnology that needs to be properly addressed. This review covers the chemical as well as the biological concerns about nanoparticles particularly titanium dioxide (TiO2) NPs and emphasizes the toxicological profile of TiO2 at the molecular level in both in vitro and in vivo systems. In addition, the challenges and future prospects of nanotoxicology are discussed that may provide better understanding and new insights into ongoing and future research in this field.
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Development of an ex vivo human-porcine respiratory model for preclinical studies. Sci Rep 2017; 7:43121. [PMID: 28233793 PMCID: PMC5324051 DOI: 10.1038/srep43121] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 01/19/2017] [Indexed: 12/15/2022] Open
Abstract
Anatomical models to study aerosol delivery impose huge limitations and extrapolation to humans remains controversial. This study aimed to develop and validate an ex vivo human-like respiratory tract model easy to use and relevant to compare to in vivo human data. A human plastinated head is connected to an ex vivo porcine pulmonary tract ventilated artificially by passive expansion. A physiological study measures “pleural” depressions, tidal volumes, and minute ventilation for the respiratory rates chosen (10, 15, and 20 per minute) with three inspiratory/expiratory ratios (1/1, 1/2, and 1/3). Scintigraphy with 81mKrypton assesses the homogeneity of the ventilation. Forty different experiments were set for validation, with 36 (90%) ventilating successfully. At a respiratory rate of 15/minute with inspiratory/expiratory ratio of 1/2, the tidal volume average was 824 mL (standard deviation, 207 mL). The scintigraphy performed on 16 ex vivo models (44.4%), showed homogenous ventilation with great similarity to human physiological studies. Ratio of the peripheral to central count rates were equally correlated with human data published in the literature. This new model, combining research feasibility and human physiology likeness, provides a realistic approach to human inhalation and therefore can be an interesting tool in aerosol regional deposition studies.
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Secondo LE, Liu NJ, Lewinski NA. Methodological considerations when conductingin vitro, air–liquid interface exposures to engineered nanoparticle aerosols. Crit Rev Toxicol 2016; 47:225-262. [DOI: 10.1080/10408444.2016.1223015] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Lynn E. Secondo
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Nathan J. Liu
- Institute for Work and Health (IST), University of Lausanne and Geneva, Epalinges-Lausanne, Switzerland
- Department of Medicine, Weill Cornell Medical College, Cornell University, New York, NY, USA
| | - Nastassja A. Lewinski
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA
- Institute for Work and Health (IST), University of Lausanne and Geneva, Epalinges-Lausanne, Switzerland
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Parveen A, Rizvi SHM, Sushma, Mahdi F, Ahmad I, Singh PP, Mahdi AA. Intranasal exposure to silica nanoparticles induces alterations in pro-inflammatory environment of rat brain. Toxicol Ind Health 2016; 33:119-132. [DOI: 10.1177/0748233715602985] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Silica nanoparticles (SiNPs) are being used increasingly in biomedical and industrial fields; however, their adverse effects on human health have not been fully investigated. In this study, we focused on some of the toxicological aspects of SiNPs by studying oxidative stress and pro-inflammatory responses in the frontal cortex, corpus striatum and hippocampus regions of rat brain. Wistar rats were exposed to SiNPs of size 80 nm and 10 nm at a dose of 150 µg/50 µL phosphate-buffered saline/rat for 30 days. The results indicated a significant increase of lipid peroxide levels and hydrogen peroxide content in various regions of the treated rat brain. Moreover, these changes were accompanied with a significant decrease in the activities of manganese superoxide dismutase, glutathione reductase, catalase and reduced glutathione in different brain regions, suggesting impaired antioxidant defence system. Furthermore, SiNPs exposure not only increased messenger RNA (mRNA) and protein expression of nuclear factor-κB (NF-κB) but also significantly increased the mRNA and protein levels of tumour necrosis factor α (TNF-α), interleukin 1β (IL-1β) and monocyte chemoattractant protein 1 (MCP-1) in different regions of rat brain. Cumulatively, these data suggest that SiNPs induced the activation of NF-κB and increased the expression of TNF-α, IL-1β and MCP-1 in rat brain, possibly via redox-sensitive cellular signalling pathways.
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Affiliation(s)
- Arshiya Parveen
- Department of Biochemistry, King George’s Medical University, Lucknow, Uttar Pradesh, India
| | | | - Sushma
- Fibre Toxicology Division, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Farzana Mahdi
- Department of Biochemistry, Era’s Lucknow Medical College & Hospital, Lucknow, Uttar Pradesh, India
| | - Iqbal Ahmad
- Fibre Toxicology Division, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Prem Prakhash Singh
- Department of Biochemistry, Era’s Lucknow Medical College & Hospital, Lucknow, Uttar Pradesh, India
| | - Abbas Ali Mahdi
- Department of Biochemistry, King George’s Medical University, Lucknow, Uttar Pradesh, India
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Micron-sized and submicron-sized aerosol deposition in a new ex vivo preclinical model. Respir Res 2016; 17:78. [PMID: 27388488 PMCID: PMC4937580 DOI: 10.1186/s12931-016-0395-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/01/2016] [Indexed: 11/21/2022] Open
Abstract
Background The knowledge of where particles deposit in the respiratory tract is crucial for understanding the health effects associated with inhaled drug particles. Method An ex vivo study was conducted to assess regional deposition patterns (thoracic vs. extrathoracic) of radioactive polydisperse aerosols with different size ranges [0.15 μm–0.5 μm], [0.25 μm–1 μm] and [1 μm–9 μm]. SPECT/CT analyses were performed complementary in order to assess more precisely the regional deposition of aerosols within the pulmonary tract. Experiments were set using an original respiratory tract model composed of a human plastinated head connected to an ex vivo porcine pulmonary tract. The model was ventilated by passive expansion, simulating pleural depressions. Aerosol was administered during nasal breathing. Results Planar scintigraphies allowed to calculate the deposited aerosol fractions for particles in the three size ranges from sub-micron to micron The deposited fractions obtained, for thoracic vs. extra-thoracic regions respectively, were 89 ± 4 % vs. 11 ± 4 % for [0.15 μm–0.5 μm], 78 ± 5 % vs. 22 ± 5 % for [0.25 μm–1 μm] and 35 ± 11 % vs.65 ± 11 % for [1 μm–9 μm]. Conclusion Results obtained with this new ex vivo respiratory tract model are in good agreement with the in vivo data obtained in studies with baboons and humans.
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Song B, Liu J, Feng X, Wei L, Shao L. A review on potential neurotoxicity of titanium dioxide nanoparticles. NANOSCALE RESEARCH LETTERS 2015; 10:1042. [PMID: 26306536 PMCID: PMC4549355 DOI: 10.1186/s11671-015-1042-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 07/27/2015] [Indexed: 05/24/2023]
Abstract
As the rapid development of nanotechnology in the past three decades, titanium dioxide nanoparticles (TiO2 NPs), for their peculiar physicochemical properties, are widely applied in consumer products, food additives, cosmetics, drug carriers, and so on. However, little is known about their potential exposure and neurotoxic effects. Once NPs are unintentionally exposed to human beings, they could be absorbed, and then accumulated in the brain regions by passing through the blood-brain barrier (BBB) or through the nose-to-brain pathway, potentially leading to dysfunctions of central nerve system (CNS). Besides, NPs may affect the brain development of embryo by crossing the placental barrier. A few in vivo and in vitro researches have demonstrated that the morphology and function of neuronal or glial cells could be impaired by TiO2 NPs which might induce cell necrosis. Cellular components, such as mitochondrial, lysosome, and cytoskeleton, could also be influenced as well. The recognition ability, spatial memory, and learning ability of TiO2 NPs-treated rodents were significantly impaired, which meant that accumulation of TiO2 NPs in the brain could lead to neurodegeneration. However, conclusions obtained from those studies were not consistent with each other as researchers may choose different experimental parameters, including administration ways, dosage, size, and crystal structure of TiO2 NPs. Therefore, in order to fully understand the potential risks of TiO2 NPs to brain health, figure out research areas where further studies are required, and improve its bio-safety for applications in the near future, how TiO2 NPs interact with the brain is investigated in this review by summarizing the current researches on neurotoxicity induced by TiO2 NPs.
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Affiliation(s)
- Bin Song
- />Guizhou Provincial People’s Hospital, Guiyang, 550002 China
- />Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Jia Liu
- />Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Xiaoli Feng
- />Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Limin Wei
- />Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Longquan Shao
- />Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
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Tomankova K, Horakova J, Harvanova M, Malina L, Soukupova J, Hradilova S, Kejlova K, Malohlava J, Licman L, Dvorakova M, Jirova D, Kolarova H. Reprint of: Cytotoxicity, cell uptake and microscopic analysis of titanium dioxide and silver nanoparticles in vitro. Food Chem Toxicol 2015; 85:20-30. [DOI: 10.1016/j.fct.2015.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 03/26/2015] [Accepted: 03/28/2015] [Indexed: 10/22/2022]
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12
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Tomankova K, Horakova J, Harvanova M, Malina L, Soukupova J, Hradilova S, Kejlova K, Malohlava J, Licman L, Dvorakova M, Jirova D, Kolarova H. Cytotoxicity, cell uptake and microscopic analysis of titanium dioxide and silver nanoparticles in vitro. Food Chem Toxicol 2015; 82:106-15. [DOI: 10.1016/j.fct.2015.03.027] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 03/26/2015] [Accepted: 03/28/2015] [Indexed: 11/15/2022]
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Silva RM, TeeSy C, Franzi L, Weir A, Westerhoff P, Evans JE, Pinkerton KE. Biological response to nano-scale titanium dioxide (TiO2): role of particle dose, shape, and retention. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2013; 76:953-72. [PMID: 24156719 PMCID: PMC4370163 DOI: 10.1080/15287394.2013.826567] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Titanium dioxide (TiO2) is one of the most widely used nanomaterials, valued for its highly refractive, photocatalytic, and pigmenting properties. TiO2 is also classified by the International Agency for Research on Cancer (IARC) as a possible human carcinogen. The objectives of this study were to (1) establish a lowest-observed-effect level (LOEL) for nano-scale TiO2, (2) determine TiO2 uptake in the lungs, and (3) estimate toxicity based on physicochemical properties and retention in the lungs. In vivo lung toxicity of nano-scale TiO2 using varying forms of well-characterized, highly dispersed TiO2 was assessed. Anatase/rutile P25 spheres (TiO2-P25), pure anatase spheres (TiO2-A), and anatase nanobelts (TiO2-NB) were tested. To determine the effects of dose and particle characteristics, male Sprague-Dawley rats were administered TiO2 (0, 20, 70, or 200 μg) via intratracheal instillation. Bronchoalveolar lavage fluid (BALF) and lung tissue were obtained for analysis 1 and 7 d post exposure. Despite abundant TiO2 inclusions in all exposed animals, only TiO2-NB displayed any significant degree of inflammation seen in BALF at the 1-d time point. This inflammation resolved by 7 d, although TiO2 particles had not cleared from alveolar macrophages recovered from the lung. Histological examination showed TiO2-NB produced cellular changes at d 1 that were still evident at d 7. Data indicate TiO2-NB is the most inflammatory with a LOEL of 200 μg at 1 d post instillation.
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Affiliation(s)
- Rona M. Silva
- Center for Health and the Environment, University of California Davis, Davis, CA 95616
| | - Christel TeeSy
- Center for Health and the Environment, University of California Davis, Davis, CA 95616
| | - Lisa Franzi
- Department of Pulmonary and Critical Care Medicine, CCRBM, School of Medicine, University of California Davis, Davis, CA 95616
| | - Alex Weir
- School of Sustainable Engineering and The Built Environment, Arizona State University, Tempe, AZ 85287
| | - Paul Westerhoff
- School of Sustainable Engineering and The Built Environment, Arizona State University, Tempe, AZ 85287
| | - James E. Evans
- Department of Molecular and Cellular Biology, University of California, Davis, CA 95616
- Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, WA 99354
| | - Kent E. Pinkerton
- Center for Health and the Environment, University of California Davis, Davis, CA 95616
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