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Okada T, Lee BW, Ogami A, Oyabu T, Myojo T. Inhalation of titanium dioxide (P25) nanoparticles to rats and changes in surfactant protein (SP-D) levels in bronchoalveolar lavage fluid and serum. Nanotoxicology 2019; 13:1396-1408. [PMID: 31512956 DOI: 10.1080/17435390.2019.1661042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Titanium dioxide (TiO2) nanoparticles are typical and widely used nanomaterials, and there are many studies on the inflammatory responses induced by their inhalation. In this study, we conducted a 4-week inhalation exposure study of aerosolized TiO2> nanoparticles (P25) to male Wistar rats. The mean aerosol concentration measured at each day was 4.1 mg/m3 by dry powder dispersion of TiO2 nanoparticles. Control and exposure groups of rats were killed at 3 and 30 days after the termination of exposure, and bronchoalveolar lavage fluid (BALF) and serum were collected for analysis of total cell count, neutrophil count, and surfactant protein (SP-D) in BALF and SP-D in serum, as well as other serum biomarkers. SP-D is a component of lung surfactants produced in type II alveolar epithelial cells and Clara cells and secreted into the alveolar space and blood. The neutrophil count in the BALF was significantly elevated at 3 and 30 days. The levels of SP-D in the BALF were also elevated at 3 and 30 days, while the serum SP-D levels were elevated at 3 days only. We determined the amounts of TiO2 in the rat lungs in the exposure group at 3, 30, and 73 days to analyze the lung deposition fraction (10.2%) and the biological half-life time (72.4 days) of inhaled TiO2 nanoparticles. Histopathological analysis revealed mild pulmonary inflammation in lung tissue at 3 days. Serum SP-D was found to be a potential biomarker for exposure to TiO2 nanoparticles in this study.
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Affiliation(s)
- Takami Okada
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
| | - Byeong Woo Lee
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
| | - Akira Ogami
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
| | - Takako Oyabu
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
| | - Toshihiko Myojo
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health Japan, Kitakyushu, Japan
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Kane AB, Hurt RH, Gao H. The asbestos-carbon nanotube analogy: An update. Toxicol Appl Pharmacol 2018; 361:68-80. [PMID: 29960000 PMCID: PMC6298811 DOI: 10.1016/j.taap.2018.06.027] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 06/11/2018] [Accepted: 06/26/2018] [Indexed: 01/16/2023]
Abstract
Nanotechnology is an emerging industry based on commercialization of materials with one or more dimensions of 100 nm or less. Engineered nanomaterials are currently incorporated into thin films, porous materials, liquid suspensions, or filler/matrix nanocomposites with future applications predicted in energy and catalysis, microelectronics, environmental sensing and remediation, and nanomedicine. Carbon nanotubes are one-dimensional fibrous nanomaterials that physically resemble asbestos fibers. Toxicologic studies in rodents demonstrated that some types of carbon nanotubes can induce mesothelioma, and the World Health Organization evaluated long, rigid multiwall carbon nanotubes as possibly carcinogenic for humans in 2014. This review summarizes key physicochemical similarities and differences between asbestos fibers and carbon nanotubes. The "fiber pathogenicity paradigm" has been extended to include carbon nanotubes as well as other high-aspect-ratio fibrous nanomaterials including metallic nanowires. This paradigm identifies width, length, and biopersistence of high-aspect-ratio fibrous nanomaterials as critical determinants of lung disease, including mesothelioma, following inhalation. Based on recent theoretical modeling studies, a fourth factor, mechanical bending stiffness, will be considered as predictive of potential carcinogenicity. Novel three-dimensional lung tissue platforms provide an opportunity for in vitro screening of a wide range of high aspect ratio fibrous nanomaterials for potential lung toxicity prior to commercialization.
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Affiliation(s)
- Agnes B Kane
- Department of Pathology and Laboratory Medicine, Brown University, Providence, RI, United States; Institute for Molecular and Nanoscale Innovation, Providence, RI, United States.
| | - Robert H Hurt
- School of Engineering, Brown University, Providence, RI, United States; Institute for Molecular and Nanoscale Innovation, Providence, RI, United States
| | - Huajian Gao
- School of Engineering, Brown University, Providence, RI, United States; Institute for Molecular and Nanoscale Innovation, Providence, RI, United States
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Tomonaga T, Izumi H, Yoshiura Y, Myojo T, Oyabu T, Lee BW, Okada T, Marui T, Wang KY, Kubo M, Shimada M, Noguchi S, Nishida C, Yatera K, Morimoto Y. Usefulness of myeloperoxidase as a biomarker for the ranking of pulmonary toxicity of nanomaterials. Part Fibre Toxicol 2018; 15:41. [PMID: 30352603 PMCID: PMC6199695 DOI: 10.1186/s12989-018-0277-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/10/2018] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND In order to examine whether myeloperoxidase (MPO) can be a useful marker for evaluating the pulmonary toxicity of nanomaterials, we analyzed MPO protein in bronchoalveolar lavage fluid (BALF) samples obtained from previous examinations of a rat model. In those examinations we performed intratracheal instillation exposures (dose: 0.2-1.0 mg) and inhalation exposures (exposure concentration: 0.32-10.4 mg/m3) using 9 and 4 nanomaterials with different toxicities, respectively. Based on those previous studies, we set Nickel oxide nanoparticles (NiO), cerium dioxide nanoparticles (CeO2), multi wall carbon nanotubes with short or long length (MWCNT (S) and MWCNT (L)), and single wall carbon nanotube (SWCNT) as chemicals with high toxicity; and titanium dioxide nanoparticles (TiO2 (P90) and TiO2 (Rutile)), zinc oxide nanoparticles (ZnO), and toner with external additives including nanoparticles as chemicals with low toxicity. We measured the concentration of MPO in BALF samples from rats from 3 days to 6 months following a single intratracheal instillation, and from 3 days to 3 months after the end of inhalation exposure. RESULTS Intratracheal instillation of high toxicity NiO, CeO2, MWCNT (S), MWCNT (L), and SWCNT persistently increased the concentration of MPO, and inhalation of NiO and CeO2 increased the MPO in BALF. By contrast, intratracheal instillation of low toxicity TiO2 (P90), TiO2 (Rutile), ZnO, and toner increased the concentration of MPO in BALF only transiently, and inhalation of TiO2 (Rutile) and ZnO induced almost no increase of the MPO. The concentration of MPO correlated with the number of total cells and neutrophils, the concentration of chemokines for neutrophils (cytokine-induced neutrophil chemoattractant (CINC)-1 and heme oxygenase (HO)-1), and the activity of released lactate dehydrogenase (LDH) in BALF. The results from the receiver operating characteristics (ROC) for the toxicity of chemicals by the concentration of MPO proteins in the intratracheal instillation and inhalation exposures showed that the largest areas under the curves (AUC) s in both examinations occurred at 1 month after exposure. CONCLUSION These data suggest that MPO can be a useful biomarker for the ranking of the pulmonary toxicity of nanomaterials, especially at 1 month after exposure, in both intratracheal instillation and inhalation exposure.
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Affiliation(s)
- Taisuke Tomonaga
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Hiroto Izumi
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Yukiko Yoshiura
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Toshihiko Myojo
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Takako Oyabu
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Byeong-Woo Lee
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Takami Okada
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Takashi Marui
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Ke-Yong Wang
- Shared-Use Research Center, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Masaru Kubo
- Department of Chemical Engineering, Hiroshima University, Higashi-Hiroshima, 739-8528 Japan
| | - Manabu Shimada
- Department of Chemical Engineering, Hiroshima University, Higashi-Hiroshima, 739-8528 Japan
| | - Shingo Noguchi
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Chinatsu Nishida
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Kazuhiro Yatera
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
| | - Yasuo Morimoto
- Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, 807-8555 Japan
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Visalli G, Facciolà A, Iannazzo D, Piperno A, Pistone A, Di Pietro A. The role of the iron catalyst in the toxicity of multi-walled carbon nanotubes (MWCNTs). J Trace Elem Med Biol 2017; 43:153-160. [PMID: 28126205 DOI: 10.1016/j.jtemb.2017.01.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 12/30/2016] [Accepted: 01/12/2017] [Indexed: 11/19/2022]
Abstract
This study aimed to investigate the role of iron, used as a catalyst, in the biological response to pristine and functionalized multi-walled carbon nanotubes (p/fMWCNTs) with an iron content of 2.5-2.8%. Preliminarily, we assessed the pro-oxidant activity of MWCNTs-associated iron by an abiotic test. To evaluate iron bioavailability, we measured intracellular redox-active iron in A549 cells exposed to both MWCNT suspensions and to the cell medium preconditioned by MWCNTs, in order to assess the iron dissolution rate under physiological conditions. Moreover, in exposed cells, we detected ROS levels, 8-oxo-dG and mitochondrial function. The results clearly highlighted that MWCNTs- associated iron was not redox-active and that iron leakage did not occur under physiological conditions, including the oxidative burst of specialized cells. Despite this, in MWCNTs exposed cells, higher level of intracellular redox-active iron was measured in comparison to control and a significant time-dependent ROS increase was observed (P<0.01). Higher levels of 8-oxo-dG, a marker of oxidative DNA damage, and decreased mitochondrial function, confirmed the oxidative stress induced by MWCNTs. Based on the results we believe that oxidative damage could be attributable to the release of endogenous redox-active iron. This was due to the damage of acidic vacuolar compartment caused by endocytosis-mediated MWCNT internalization.
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Affiliation(s)
- Giuseppa Visalli
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy.
| | - Alessio Facciolà
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy.
| | - Daniela Iannazzo
- Department of Electronic Engineering, Industrial Chemistry and Engineering, University of Messina, Italy.
| | - Anna Piperno
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
| | - Alessandro Pistone
- Department of Electronic Engineering, Industrial Chemistry and Engineering, University of Messina, Italy.
| | - Angela Di Pietro
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging, University of Messina, Italy.
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Chang HY, Li F, Li FS, Zheng CZ, Lei YZ, Wang J. Genetic Polymorphisms of SP-A, SP-B, and SP-D and Risk of Respiratory Distress Syndrome in Preterm Neonates. Med Sci Monit 2016; 22:5091-5100. [PMID: 28011976 PMCID: PMC5207009 DOI: 10.12659/msm.898553] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Background We examined selected polymorphisms in 3 pulmonary surfactant-associated proteins (SP) for their influence on serum SP levels and risk of respiratory distress syndrome (RDS) in preterm neonates. Material/Methods Premature infants from a Han population were enrolled, including 100 premature infants with RDS (case group) and 120 premature infants without RDS (control group). SNP genotyping for SP-A (+186A/G and +655C/T), SP-B (−18A/C and 1580C/T), and SP-D (Met11ThrT/C and Ala160ThrG/A) used polymerase chain reaction-restriction fragment length polymorphism. Haplotypes were calculated with Shesis software and serum SP-A/B/D levels were quantified by ELISA. Results Case and control groups exhibited significant differences in genotype and allele frequencies of SP-A (+186A/G, +655C/T) and SP-B (1580C/T). However, no statistically significant differences were observed in the allele and genotype frequencies of SP-B −18A/C, SP-D Met11ThrT/C, and SP-D Ala160ThrG/A. Importantly, serum SP-A and SP-B levels were reduced in RDS patients carrying SP-A (+186A/G, +655C/T) and SP-B (1580C/T) polymorphisms. AA genotype of +186A/G, SP-A level, and CC genotype of 1580C/T were independently correlated with increased RDS risk. Conclusions SP-A (+186A/G) and SP-B (1580C/T) polymorphisms are strongly associated with the risk of RDS in preterm infants. Notably, reduced serum SP-A levels were correlated with a high risk of RDS and may serve as novel biomarkers for RDS detection and monitoring.
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Affiliation(s)
- Hong-Yu Chang
- Department of Pediatrics, The General Hospital of the PLA Rocket Force, Beijing, China (mainland)
| | - Fang Li
- Department of Pediatrics, The General Hospital of the PLA Rocket Force, Beijing, China (mainland)
| | - Feng-Sheng Li
- Central Laboratory, The General Hospital of the PLA Rocket Force, Beijing, China (mainland)
| | - Cheng-Zhong Zheng
- Department of Pediatrics, The 306 Hospital of PLA, Beijing, China (mainland)
| | - Yan-Zhe Lei
- Department of Neonatology, Haidian Maternal and Child Healthcare Hospital, Beijing, China (mainland)
| | - Jing Wang
- Department of Neonatology, Nanjing Tongren Hospital, Nanjing, China (mainland)
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A Review on the Respiratory System Toxicity of Carbon Nanoparticles. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13030325. [PMID: 26999172 PMCID: PMC4808988 DOI: 10.3390/ijerph13030325] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 02/13/2016] [Accepted: 02/18/2016] [Indexed: 12/05/2022]
Abstract
The respiratory system represents the main gateway for nanoparticles’ entry into the human body. Although there is a myriad of engineered nanoparticles, carbon nanoparticles/nanotubes (CNPs/CNTs) have received much attention mainly due to their light weight, very high surface area, durability, and their diverse applications. Since their discovery and manufacture over two decades ago, much has been learned about nanoparticles’ interactions with diverse biological system models. In particular, the respiratory system has been of great interest because various natural and man-made fibrous particles are known to be responsible for chronic and debilitating lung diseases. In this review, we present up-to-date the literature regarding the effects of CNTs or carbon nanofibers (CNFs) on the human respiratory system with respect to respiratory toxicity pathways and associated pathologies. This article is intended to emphasize the potentially dangerous effects to the human respiratory system if inadequate measures are used in the manufacture, handling, and preparation and applications of CNP or CNP-based products.
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Kadoya C, Lee BW, Ogami A, Oyabu T, Nishi KI, Yamamoto M, Todoroki M, Morimoto Y, Tanaka I, Myojo T. Analysis of pulmonary surfactant in rat lungs after inhalation of nanomaterials: Fullerenes, nickel oxide and multi-walled carbon nanotubes. Nanotoxicology 2015; 10:194-203. [PMID: 25950198 DOI: 10.3109/17435390.2015.1039093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The health risks of inhalation exposure to engineered nanomaterials in the workplace are a major concern in recent years, and hazard assessments of these materials are being conducted. The pulmonary surfactant of lung alveoli is the first biological entity to have contact with airborne nanomaterials in inhaled air. In this study, we retrospectively evaluated the pulmonary surfactant components of rat lungs after a 4-week inhalation exposure to three different nanomaterials: fullerenes, nickel oxide (NiO) nanoparticles and multi-walled carbon nanotubes (MWCNT), with similar levels of average aerosol concentration (0.13-0.37 mg/m(3)). Bronchoalveolar lavage fluid (BALF) of the rat lungs stored after previous inhalation studies was analyzed, focusing on total protein and the surfactant components, such as phospholipids and surfactant-specific SP-D (surfactant protein D) and the BALF surface tension, which is affected by SP-B and SP-C. Compared with a control group, significant changes in the BALF surface tension and the concentrations of phospholipids, total protein and SP-D were observed in rats exposed to NiO nanoparticles, but not in those exposed to fullerenes. Surface tension and the levels of surfactant phospholipids and proteins were also significantly different in rats exposed to MWCNTs. The concentrations of phospholipids, total protein and SP-D and BALF surface tension were correlated significantly with the polymorphonuclear neutrophil counts in the BALF. These results suggest that pulmonary surfactant components can be used as measures of lung inflammation.
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Affiliation(s)
- Chikara Kadoya
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Byeong-Woo Lee
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Akira Ogami
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Takako Oyabu
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Ken-ichiro Nishi
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Makoto Yamamoto
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Motoi Todoroki
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Yasuo Morimoto
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Isamu Tanaka
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
| | - Toshihiko Myojo
- a Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health , Kitakyushu , Japan
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