1
|
Kapiamba KF, Owusu SY, Wu Y, Huang YW, Jiang Y, Wang Y. Examining the Oxidation States of Metals in Aerosols Emitted by Electronic Cigarettes. Chem Res Toxicol 2024; 37:1113-1120. [PMID: 38957009 DOI: 10.1021/acs.chemrestox.4c00033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Electronic cigarettes (ECs) emit many toxic substances, including metals, that can pose a threat to users and the environment. The toxicity of the emitted metals depends on their oxidation states. Hence, this study examines the oxidation states of metals observed in EC aerosols. X-ray photoelectron spectroscopy analysis of the filters that collected EC aerosols identified the oxidation states of five primary metals (based on surface sample analysis), including chromium(III) (close to 100%) under low power setting while a noticeable amount of chromium(VI) (15%) at higher power settings of the EC, and copper(II) (100%), zinc(II) (100%), nickel(II) (100%), lead(II) (65%), and lead(IV) (35%) regardless of power settings. This observation indicates that the increased temperature due to higher power settings could alter the oxidation states of certain metals. We noted that many metals were in their lesser toxic states; however, inhaling these metals may still pose health risks.
Collapse
Affiliation(s)
- Kashala Fabrice Kapiamba
- Department of Chemical, Environmental, and Materials Engineering, University of Miami, Miami, Florida 33146, United States
| | - Stephen Yaw Owusu
- Department of Chemistry, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Yangtao Wu
- Department of Civil and Environmental Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon TU428, Hong Kong
| | - Yue-Wern Huang
- Department of Biological Sciences, Missouri University of Science and Technology, Rolla, Missouri 65409, United States
| | - Yi Jiang
- Department of Civil and Environmental Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon TU428, Hong Kong
| | - Yang Wang
- Department of Chemical, Environmental, and Materials Engineering, University of Miami, Miami, Florida 33146, United States
| |
Collapse
|
2
|
Belting K, Eisenhawer C, Merget R, Brüning T, Monsé C. Zinc fever in a painter and varnisher: a case report. J Med Case Rep 2024; 18:331. [PMID: 38982525 PMCID: PMC11234779 DOI: 10.1186/s13256-024-04651-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 05/27/2024] [Indexed: 07/11/2024] Open
Abstract
BACKGROUND Zinc fever is well described in medical literature, particularly in workers after handling zinc-containing materials at high temperatures e.g., in the welding of hot-dip galvanized steel sheets. It is not known whether zinc fever also occurs at low temperatures. CASE PRESENTATION We present the case of a 33-year-old Caucasian atopic painter and varnisher with work-related dyspnea, sweating, as well as multiple occurrences of fever. He was sent to Institute for Prevention and Occupational medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA) for the evaluation of isocyanate asthma, but an inhalative challenge with hexamethylene diisocyanate was negative. Since symptoms were closely related to the use of zinc coatings at room temperature without adequate protective measures, the diagnosis of zinc fever was made. After exposure cessation the worker immediately became symptom-free. The work as painter and varnisher may be associated with various exposures to hazardous substances. Besides solvents, epoxy compounds and isocyanates, which can cause obstructive respiratory diseases; additionally, zinc-containing agents should be considered as health hazards. CONCLUSIONS This case demonstrates that zinc fever may occur also after application of zinc coatings by spray painting at low temperatures.
Collapse
Affiliation(s)
- Kerstin Belting
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany.
| | - Christian Eisenhawer
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Rolf Merget
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Thomas Brüning
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Christian Monsé
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| |
Collapse
|
3
|
Wu J, Ding X, Pang Y, Liu Q, Lei J, Zhang H, Zhang T. Research advance of occupational exposure risks and toxic effects of semiconductor nanomaterials. J Appl Toxicol 2024. [PMID: 38837250 DOI: 10.1002/jat.4647] [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: 03/14/2024] [Revised: 05/11/2024] [Accepted: 05/12/2024] [Indexed: 06/07/2024]
Abstract
In recent years, semiconductor nanomaterials, as one of the most promising and applied classes of engineered nanomaterials, have been widely used in industries such as photovoltaics, electronic devices, and biomedicine. However, occupational exposure is unavoidable during the production, use, and disposal stages of products containing these materials, thus posing potential health risks to workers. The intricacies of the work environment present challenges in obtaining comprehensive data on such exposure. Consequently, there remains a significant gap in understanding the exposure risks and toxic effects associated with semiconductor nanomaterials. This paper provides an overview of the current classification and applications of typical semiconductor nanomaterials. It also delves into the existing state of occupational exposure, methodologies for exposure assessment, and prevailing occupational exposure limits. Furthermore, relevant epidemiological studies are examined. Subsequently, the review scrutinizes the toxicity of semiconductor nanomaterials concerning target organ toxicity, toxicity mechanisms, and influencing factors. The aim of this review is to lay the groundwork for enhancing the assessment of occupational exposure to semiconductor nanomaterials, optimizing occupational exposure limits, and promoting environmentally sustainable development practices in this domain.
Collapse
Affiliation(s)
- Jiawei Wu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Xiaomeng Ding
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Yanting Pang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Qing Liu
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Jialin Lei
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Haopeng Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
| | - Ting Zhang
- Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, China
- Jiangsu Key Laboratory for Biomaterials and Devices Southeast University, Nanjing, China
| |
Collapse
|
4
|
Thoma T, Ma-Hock L, Schneider S, Honarvar N, Treumann S, Groeters S, Strauss V, Marxfeld H, Funk-Weyer D, Seiffert S, Wohlleben W, Dammann M, Wiench K, Lombaert N, Spirlet C, Vasquez M, Dewhurst N, Landsiedel R. Toxicological inhalation studies in rats to substantiate grouping of zinc oxide nanoforms. Part Fibre Toxicol 2024; 21:24. [PMID: 38760761 PMCID: PMC11100124 DOI: 10.1186/s12989-024-00572-y] [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: 12/28/2023] [Accepted: 02/24/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Significant variations exist in the forms of ZnO, making it impossible to test all forms in in vivo inhalation studies. Hence, grouping and read-across is a common approach under REACH to evaluate the toxicological profile of familiar substances. The objective of this paper is to investigate the potential role of dissolution, size, or coating in grouping ZnO (nano)forms for the purpose of hazard assessment. We performed a 90-day inhalation study (OECD test guideline no. (TG) 413) in rats combined with a reproduction/developmental (neuro)toxicity screening test (TG 421/424/426) with coated and uncoated ZnO nanoforms in comparison with microscale ZnO particles and soluble zinc sulfate. In addition, genotoxicity in the nasal cavity, lungs, liver, and bone marrow was examined via comet assay (TG 489) after 14-day inhalation exposure. RESULTS ZnO nanoparticles caused local toxicity in the respiratory tract. Systemic effects that were not related to the local irritation were not observed. There was no indication of impaired fertility, developmental toxicity, or developmental neurotoxicity. No indication for genotoxicity of any of the test substances was observed. Local effects were similar across the different ZnO test substances and were reversible after the end of the exposure. CONCLUSION With exception of local toxicity, this study could not confirm the occasional findings in some of the previous studies regarding the above-mentioned toxicological endpoints. The two representative ZnO nanoforms and the microscale particles showed similar local effects. The ZnO nanoforms most likely exhibit their effects by zinc ions as no particles could be detected after the end of the exposure, and exposure to rapidly soluble zinc sulfate had similar effects. Obviously, material differences between the ZnO particles do not substantially alter their toxicokinetics and toxicodynamics. The grouping of ZnO nanoforms into a set of similar nanoforms is justified by these observations.
Collapse
Affiliation(s)
| | - Lan Ma-Hock
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Steffen Schneider
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Naveed Honarvar
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Silke Treumann
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Sibylle Groeters
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Volker Strauss
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Heike Marxfeld
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Dorothee Funk-Weyer
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Svenja Seiffert
- BASF SE, Analytical and Material Science, Ludwigshafen am Rhein, Germany
| | - Wendel Wohlleben
- BASF SE, Analytical and Material Science, Ludwigshafen am Rhein, Germany
| | - Martina Dammann
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany
| | - Karin Wiench
- BASF SE, Product Stewardship, Regulatory Toxicology Chemicals, Ludwigshafen am Rhein, Germany
| | | | | | | | | | - Robert Landsiedel
- BASF SE, Experimental Toxicology and Ecology, Ludwigshafen am Rhein, Germany.
- Pharmacy, Pharmacology and Toxicology, Free University of Berlin, Berlin, Germany.
| |
Collapse
|
5
|
Li Y, Li J, Li M, Sun J, Shang X, Ma Y. Biological mechanism of ZnO nanomaterials. J Appl Toxicol 2024; 44:107-117. [PMID: 37518903 DOI: 10.1002/jat.4522] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/09/2023] [Accepted: 07/11/2023] [Indexed: 08/01/2023]
Abstract
Modern nanotechnology has made zinc oxide nanomaterials (ZnO NMts) multifunctional, stable, and low cost, enabling them to be widely used in commercial and biomedical fields. With its wide application, the risk of human direct contact and their release into the environment also increases. This review aims to summarize the toxicity studies of ZnO NMts in vivo, including neurotoxicity, inhalation toxicity, and reproductive toxicity. The antibacterial and antiviral mechanisms of ZnO NMts in vitro and the toxicity to eukaryotic cells were summarized. The summary found that it was mainly related to reactive oxygen species (ROS) produced by oxidative stress. It also discusses the potential harm to body and the favorable prospects of the widespread use of antibacterial and antiviral in the future medical field. The review also emphasizes that the dosage and use method of ZnO NMts will be the focus of future biomedical research.
Collapse
Affiliation(s)
- Yuanyuan Li
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, China
| | - Jingjing Li
- College of Pharmacy, Gansu University of Traditional Chinese Medicine, Lanzhou, China
| | - Mei Li
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, China
| | - Jiwen Sun
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, China
| | - Xiaofen Shang
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, China
| | - Yonghua Ma
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, China
| |
Collapse
|
6
|
Monsé C, Merget R, Bünger J, Pallapies D, Brüning T. Systemic inflammatory effects of zinc oxide particles: is a re-evaluation of exposure limits needed? Arch Toxicol 2023; 97:2813-2818. [PMID: 37566122 PMCID: PMC10474974 DOI: 10.1007/s00204-023-03567-4] [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: 07/31/2023] [Accepted: 08/02/2023] [Indexed: 08/12/2023]
Abstract
Exposure to airborne substances such as gases, vapours, and particles remains a relevant health risk in many workplaces. A current topic and cause for discussion is the investigation of the health effects of particles containing zinc oxide (ZnO). Among other data, those collected from our study on human exposure data of ZnO in 2018 prompted the National Research Centre for the Working Environment 2021 to formulate a new, sharply lowered proposed occupational exposure limit (OEL) for zinc in workplaces. Since the publication of the Danish report, further studies have been conducted with ZnO. In the following text, all arguments for deriving this new limit value for zinc from the report are discussed, extended with the more recent data since 2018. It should be noted that especially the application of time extrapolation factors needs further discussion and harmonization between regulatory authorities. From our point of view, the data situation can justify a higher OEL for zinc than that proposed by the Danish National Research Centre for the Working Environment.
Collapse
Affiliation(s)
- Christian Monsé
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-La-Camp-Platz 1, 44789, Bochum, Germany.
| | - Rolf Merget
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-La-Camp-Platz 1, 44789, Bochum, Germany
| | - Jürgen Bünger
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-La-Camp-Platz 1, 44789, Bochum, Germany
| | - Dirk Pallapies
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-La-Camp-Platz 1, 44789, Bochum, Germany
| | - Thomas Brüning
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-La-Camp-Platz 1, 44789, Bochum, Germany
| |
Collapse
|
7
|
Sengupta A, Dorn A, Jamshidi M, Schwob M, Hassan W, De Maddalena LL, Hugi A, Stucki AO, Dorn P, Marti TM, Wisser O, Stucki JD, Krebs T, Hobi N, Guenat OT. A multiplex inhalation platform to model in situ like aerosol delivery in a breathing lung-on-chip. Front Pharmacol 2023; 14:1114739. [PMID: 36959848 PMCID: PMC10029733 DOI: 10.3389/fphar.2023.1114739] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/07/2023] [Indexed: 03/08/2023] Open
Abstract
Prolonged exposure to environmental respirable toxicants can lead to the development and worsening of severe respiratory diseases such as asthma, chronic obstructive pulmonary disease (COPD) and fibrosis. The limited number of FDA-approved inhaled drugs for these serious lung conditions has led to a shift from in vivo towards the use of alternative in vitro human-relevant models to better predict the toxicity of inhaled particles in preclinical research. While there are several inhalation exposure models for the upper airways, the fragile and dynamic nature of the alveolar microenvironment has limited the development of reproducible exposure models for the distal lung. Here, we present a mechanistic approach using a new generation of exposure systems, the Cloud α AX12. This novel in vitro inhalation tool consists of a cloud-based exposure chamber (VITROCELL) that integrates the breathing AXLung-on-chip system (AlveoliX). The ultrathin and porous membrane of the AX12 plate was used to create a complex multicellular model that enables key physiological culture conditions: the air-liquid interface (ALI) and the three-dimensional cyclic stretch (CS). Human-relevant cellular models were established for a) the distal alveolar-capillary interface using primary cell-derived immortalized alveolar epithelial cells (AXiAECs), macrophages (THP-1) and endothelial (HLMVEC) cells, and b) the upper-airways using Calu3 cells. Primary human alveolar epithelial cells (AXhAEpCs) were used to validate the toxicity results obtained from the immortalized cell lines. To mimic in vivo relevant aerosol exposures with the Cloud α AX12, three different models were established using: a) titanium dioxide (TiO2) and zinc oxide nanoparticles b) polyhexamethylene guanidine a toxic chemical and c) an anti-inflammatory inhaled corticosteroid, fluticasone propionate (FL). Our results suggest an important synergistic effect on the air-blood barrier sensitivity, cytotoxicity and inflammation, when air-liquid interface and cyclic stretch culture conditions are combined. To the best of our knowledge, this is the first time that an in vitro inhalation exposure system for the distal lung has been described with a breathing lung-on-chip technology. The Cloud α AX12 model thus represents a state-of-the-art pre-clinical tool to study inhalation toxicity risks, drug safety and efficacy.
Collapse
Affiliation(s)
- Arunima Sengupta
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
| | - Aurélien Dorn
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
- AlveoliX AG, Swiss Organs-on-Chip Innovation, Bern, Switzerland
| | - Mohammad Jamshidi
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
| | - Magali Schwob
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
| | - Widad Hassan
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
| | | | - Andreas Hugi
- AlveoliX AG, Swiss Organs-on-Chip Innovation, Bern, Switzerland
| | - Andreas O. Stucki
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
- *Correspondence: Andreas O. Stucki,
| | - Patrick Dorn
- Department of General Thoracic Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Thomas M. Marti
- Department of General Thoracic Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | | | | | | | - Nina Hobi
- AlveoliX AG, Swiss Organs-on-Chip Innovation, Bern, Switzerland
| | - Olivier T. Guenat
- Organs-on-Chip Technologies, ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
- Department of General Thoracic Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
- Department of Pulmonary Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
| |
Collapse
|
8
|
Huang YS, Wang JT, Tai HM, Chang PC, Huang HC, Yang PC. Metal nanoparticles and nanoparticle composites are effective against Haemophilus influenzae, Streptococcus pneumoniae, and multidrug-resistant bacteria. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2022; 55:708-715. [PMID: 35718718 DOI: 10.1016/j.jmii.2022.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/26/2022] [Accepted: 05/26/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Treatment for lower respiratory tract infection caused by multidrug-resistant organisms (MDRO) are often limited. This study explored the activity of different metal nanoparticles against several respiratory pathogens including MDROs. METHODS Clinical isolates of carbapenem-resistant Acinetobacter baumannii (CRAB), carbapenem-resistant Klebsiella pneumoniae (CRKP), Pseudomonas aeruginosa, Haemophilus influenzae, methicillin-resistant Staphylococcus aureus (MRSA), and Streptococcus pneumoniae were tested for in vitro susceptibilities to various antibiotics and nanoparticles. Minimum inhibitory concentrations (MICs) of silver-nanoparticle (Ag-NP), selenium-nanoparticle (Se-NP), and three composites solutions ND50, NK99, and TPNT1 (contained 5 ppm Ag-NP, 60 ppm ZnO-nanoparticle, and different concentrations of gold-nanoparticle or ClO2) were determined by broth microdilution method. RESULTS Fifty isolates of each bacterial species listed above were tested. Ag-NP showed lower MICs to all species than Se-NP. The MIC50s of Ag-NP for CRAB, CRKP, P. aeruginosa, and H. influenzae were <3.125 ppm, 25 ppm, <3.125 ppm, and <3.125 ppm, respectively, while those for S. pneumoniae and MRSA were >50 ppm and 50 ppm. Among CRAB, CRKP and P. aeruginosa, the MIC50s of ND50, NK99, and TPNT1 for CRAB were the lowest (1/8 dilution, 1/8 dilution, and 1/8 dilution, respectively), and those for CRKP (>1/2 dilution, 1/2 dilution, and 1/2 dilution, respectively) were the highest. Both MRSA and S. pneumoniae showed high MIC50s to ND50, NK99, and TPNT1. CONCLUSIONS Metal nanoparticles had good in vitro activity against Gram-negative bacteria. They might be suitable to be prepared as environmental disinfectants or inhaled agents to inhibit the growth of MDR Gram-negative colonizers in the lower respiratory tracts of patients with chronic lung diseases.
Collapse
Affiliation(s)
- Yu-Shan Huang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jann-Tay Wang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Maioli, Taiwan.
| | - Hui-Ming Tai
- Laboratory of Infectious Disease, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | | | | | - Pan-Chyr Yang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| |
Collapse
|
9
|
Huo Y, Li L. Long-Term Inhalation of Ultrafine Zinc Particles Deteriorated Cardiac and Cardiovascular Functions in Rats of Myocardial Infarction. Front Physiol 2022; 13:921764. [PMID: 35910581 PMCID: PMC9325963 DOI: 10.3389/fphys.2022.921764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 06/23/2022] [Indexed: 11/13/2022] Open
Abstract
Substantial ultrafine zinc particles exist in air pollutions. The level of Zn concentrations in serum and tissue could affect patients with myocardial infarction (MI). The aim of the study is to investigate the change of cardiac functions and peripheral hemodynamics in MI rats after long-term inhalation of ultrafine Zn particles. Coronary artery ligation surgery was performed to induce MI in Wistar rats. The inhalation of ultrafine Zn particles was carried out for 6 weeks after the operation. Physiological and hemodynamic measurements and computational biomechanics analysis were demonstrated in eight groups of rats at postoperative 4 and 6 weeks. There was no statistical significance between shams and shams with inhalation of ultrafine Zn particles. There were significant impairments of cardiac and hemodynamic functions in MI rats. In comparison with MI rats, the inhalation of ultrafine Zn particles for 4 weeks slowed down the progression from MI to heart failure, but the inhalation for 6 weeks accelerated the process. The long-term inhalation of ultrafine zinc particles induced excessive accumulation of zinc in serum and tissue, which deteriorated cardiac and hemodynamic dysfunctions in MI rats. The findings suggested the importance for regulating Zn intake of MI patients as well as looking at ways to lower zinc concentrations in air pollutions.
Collapse
Affiliation(s)
- Yunlong Huo
- Institute of Mechanobiology & Medical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- PKU-HKUST Shenzhen-Hong Kong Institution, Shenzhen, China
- *Correspondence: Yunlong Huo,
| | - Li Li
- PKU-HKUST Shenzhen-Hong Kong Institution, Shenzhen, China
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, China
| |
Collapse
|
10
|
Kad A, Pundir A, Arya SK, Puri S, Khatri M. Meta-analysis of in-vitro cytotoxicity evaluation studies of zinc oxide nanoparticles: Paving way for safer innovations. Toxicol In Vitro 2022; 83:105418. [PMID: 35724836 DOI: 10.1016/j.tiv.2022.105418] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 06/03/2022] [Accepted: 06/14/2022] [Indexed: 02/02/2023]
Abstract
Nano-based products have shown their daunting presence in several sectors. Among them, Zinc Oxide (ZnO) nanoparticles wangled the reputation of providing "next-generation solutions" and are being utilized in plethora of products. Their widespread application has led to increased exposure of these particles, raising concerns regarding toxicological repercussions to the human health and environment. The diversity, complexity, and heterogeneity in the available literature, along with correlation of befitting attributes, makes it challenging to develop one systematic framework to predict this toxicity. The present study aims at developing predictive modelling framework to tap the prospective features responsible for causing cytotoxicity in-vitro on exposure to ZnO nanoparticles. Rigorous approach was used to mine the information from complete body of evidence published to date. The attributes, features and experimental conditions were systematically extracted to unmask the effect of varied features. 1240 data points from 76 publications were obtained, containing 14 qualitative and quantitative attributes, including physiochemical properties of nanoparticles, cell culture and experimental parameters to perform meta-analysis. For the first time, the efforts were made to investigate the degree of significance of attributes accountable for causing cytotoxicity on exposure to ZnO nanoparticles. We show that in-vitro cytotoxicity is closely related with dose concentration of nanoparticles, followed by exposure time, disease state of the cell line and size of these nanoparticles among other attributes.
Collapse
Affiliation(s)
- Anaida Kad
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Archit Pundir
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Shailendra Kumar Arya
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Sanjeev Puri
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India
| | - Madhu Khatri
- Department of Biotechnology, University Institute of Engineering and Technology, Panjab University, Sector-25, Chandigarh 160014, India; Wellcome trustTrust/DBT IA Early Career Fellow Panjab University, Chandigarh 160014, India.
| |
Collapse
|
11
|
Monsé C, Westphal G, Raulf M, Jettkant B, van Kampen V, Kendzia B, Schürmeyer L, Seifert CE, Marek EM, Wiegand F, Rosenkranz N, Wegener C, Merget R, Brüning T, Bünger J. No inflammatory effects after acute inhalation of barium sulfate particles in human volunteers. BMC Pulm Med 2022; 22:233. [PMID: 35710385 PMCID: PMC9205122 DOI: 10.1186/s12890-022-02021-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/25/2022] [Indexed: 11/25/2022] Open
Abstract
Background Most threshold limit values are based on animal experiments. Often, the question remains whether these data reflect the situation in humans. As part of a series of investigations in our exposure lab, this study investigates whether the results on the inflammatory effects of particles that have been demonstrated in animal models can be confirmed in acute inhalation studies in humans. Such studies have not been conducted so far for barium sulfate particles (BaSO4), a substance with very low solubility and without known substance-specific toxicity. Previous inhalation studies with zinc oxide (ZnO), which has a substance-specific toxicity, have shown local and systemic inflammatory respones. The design of these human ZnO inhalation studies was adopted for BaSO4 to compare the effects of particles with known inflammatory activity and supposedly inert particles. For further comparison, in vitro investigations on inflammatory processes were carried out. Methods Sixteen healthy volunteers were exposed to filtered air and BaSO4 particles (4.0 mg/m3) for two hours including one hour of ergometric cycling at moderate workload. Effect parameters were clinical signs, body temperature, and inflammatory markers in blood and induced sputum. In addition, particle-induced in vitro-chemotaxis of BaSO4 was investigated with regard to mode of action and differences between in vivo and in vitro effects. Results No local or systemic clinical signs were observed after acute BaSO4 inhalation and, in contrast to our previous human exposure studies with ZnO, no elevated values of biomarkers of inflammation were measured after the challenge. The in vitro chemotaxis induced by BaSO4 particles was minimal and 15-fold lower compared to ZnO. Conclusion The results of this study indicate that BaSO4 as a representative of granular biopersistent particles without specific toxicity does not induce inflammatory effects in humans after acute inhalation. Moreover, the in vitro data fit in with these in vivo results. Despite the careful and complex investigations, limitations must be admitted because the number of local effect parameters were limited and chronic toxicity could not be studied. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-022-02021-y.
Collapse
Affiliation(s)
- Christian Monsé
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany.
| | - Götz Westphal
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Monika Raulf
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Birger Jettkant
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Vera van Kampen
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Benjamin Kendzia
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Leonie Schürmeyer
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Christoph Edzard Seifert
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Eike-Maximilian Marek
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Felicitas Wiegand
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Nina Rosenkranz
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Christopher Wegener
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Rolf Merget
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Thomas Brüning
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Jürgen Bünger
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr University Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| |
Collapse
|
12
|
Xiong P, Huang X, Ye N, Lu Q, Zhang G, Peng S, Wang H, Liu Y. Cytotoxicity of Metal-Based Nanoparticles: From Mechanisms and Methods of Evaluation to Pathological Manifestations. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2106049. [PMID: 35343105 PMCID: PMC9165481 DOI: 10.1002/advs.202106049] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 03/09/2022] [Indexed: 05/05/2023]
Abstract
Metal-based nanoparticles (NPs) are particularly important tools in tissue engineering-, drug carrier-, interventional therapy-, and biobased technologies. However, their complex and varied migration and transformation pathways, as well as their continuous accumulation in closed biological systems, cause various unpredictable toxic effects that threaten human and ecosystem health. Considerable experimental and theoretical efforts have been made toward understanding these cytotoxic effects, though more research on metal-based NPs integrated with clinical medicine is required. This review summarizes the mechanisms and evaluation methods of cytotoxicity and provides an in-depth analysis of the typical effects generated in the nervous, immune, reproductive, and genetic systems. In addition, the challenges and opportunities are discussed to enhance future investigations on safer metal-based NPs for practical commercial adoption.
Collapse
Affiliation(s)
- Peizheng Xiong
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan ProvinceHospital of Chengdu University of Traditional Chinese MedicineChengdu610072P. R. China
| | - Xiangming Huang
- The First Affiliated Hospital of Guangxi University of Traditional Chinese MedicineNanningGuangxi Province530023P. R. China
| | - Naijing Ye
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan ProvinceHospital of Chengdu University of Traditional Chinese MedicineChengdu610072P. R. China
| | - Qunwen Lu
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan ProvinceHospital of Chengdu University of Traditional Chinese MedicineChengdu610072P. R. China
| | - Gang Zhang
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan ProvinceHospital of Chengdu University of Traditional Chinese MedicineChengdu610072P. R. China
| | - Shunlin Peng
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan ProvinceHospital of Chengdu University of Traditional Chinese MedicineChengdu610072P. R. China
| | - Hongbo Wang
- Institute of Smart City and Intelligent TransportationSouthwest Jiaotong UniversityChengdu611700P. R. China
- State Key Laboratory of Electronic Thin Film and Integrated DevicesUniversity of Electronic Science and Technology of ChinaChengdu610054P. R. China
| | - Yiyao Liu
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan ProvinceHospital of Chengdu University of Traditional Chinese MedicineChengdu610072P. R. China
- Department of BiophysicsSchool of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengduSichuan610054P. R. China
| |
Collapse
|
13
|
Guo T, Fang X, Liu Y, Ruan Y, Hu Y, Wang X, Hu Y, Wang G, Xu Y. Acute lung inflammation induced by zinc oxide nanoparticles: Evolution and intervention via NRF2 activator. Food Chem Toxicol 2022; 162:112898. [PMID: 35247504 DOI: 10.1016/j.fct.2022.112898] [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: 12/03/2021] [Revised: 02/16/2022] [Accepted: 02/22/2022] [Indexed: 11/18/2022]
Abstract
Zinc oxide nanoparticles (ZnONPs) are widely used worldwide. Human inhalation exposure to ZnONPs induces acute lung inflammation (ALI); however, the characteristics and therapeutic targets of ALI are unclear. In this study, female C57BL/6J mice were subjected to a single intratracheal instillation of 20 μg of ZnONPs. Increased lung malondialdehyde levels and decreased total antioxidant capacity at 6 h, as well as increased lactate dehydrogenase levels in bronchoalveolar lavage fluid (BALF) at 1 day (d) post treatment were observed. A significant inflammatory response was observed at 3 d and 7 d, as evidenced by increased leukocyte numbers and total protein concentration in BALF, and histological abnormalities. Pulmonary NRF2 signaling was significantly activated at 3 d post treatment. To investigate a protective role of NRF2 activator against ZnONP-induced ALI, the mice were intraperitoneally injected with 2-cyano-3,12-dioxooleana-1,9-dien-28-imidazolide (CDDO-Im) (2 mg/kg) 1 d before and 1 d after ZnONPs treatment. CDDO-Im significantly decreased leukocyte numbers and total protein concentration in BALF and pulmonary inflammatory gene expression, and ameliorated histopathological abnormalities induced by ZnONPs. Collectively, the present study indicates that ZnONPs exposure leads to oxidative stress, cell injury and inflammation in the lung successively. Moreover, the NRF2 activator protects against ZnONPs-induced ALI.
Collapse
Affiliation(s)
- Tingyue Guo
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Xin Fang
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Yiting Liu
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Yihui Ruan
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Yu Hu
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Xuening Wang
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Yuxin Hu
- Experimental Teaching Center, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Gang Wang
- Experimental Teaching Center, School of Public Health, China Medical University, Shenyang, 110122, China
| | - Yuanyuan Xu
- Group of Chronic Disease and Environmental Genomics, School of Public Health, China Medical University, Shenyang, 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, China Medical University, Shenyang, 110122, China.
| |
Collapse
|
14
|
Exposure to nanoparticles and occupational allergy. Curr Opin Allergy Clin Immunol 2022; 22:55-63. [DOI: 10.1097/aci.0000000000000818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
15
|
Phuna ZX, Panda BP, Hawala Shivashekaregowda NK, Madhavan P. Nanoprotection from SARS-COV-2: would nanotechnology help in Personal Protection Equipment (PPE) to control the transmission of COVID-19? INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022:1-30. [PMID: 35253535 DOI: 10.1080/09603123.2022.2046710] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
The coronavirus disease 2019 (COVID-19) has caused a worldwide outbreak. The severe acute respiratory syndrome coronavirus 2 virus can be transmitted human-to-human through droplets and close contact where personal protective equipment (PPE) is imperative to protect the individuals. The advancement of nanotechnology with significant nanosized properties can confer a higher form of protection. Incorporation of nanotechnology into facemasks can exhibit antiviral properties. Nanocoating on surfaces can achieve self-disinfecting purposes and be applied in highly populated places. Moreover, nano-based hand sanitizers can confer better sterilizing efficacies with low skin irritation as compared to alcohol-based hand sanitizers. The present review discusses the incorporation of nanotechnology into nano-based materials and coatings in facemasks, self-surface disinfectants and hand sanitizers, in the hope to contribute to the current understanding of PPE to combat COVID-19.
Collapse
Affiliation(s)
- Zhi Xin Phuna
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Selangor, Malaysia
| | - Bibhu Prasad Panda
- Department of Pharmaceutical Technology, Schoolof Pharmacy, Faculty of Health & Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | | | - Priya Madhavan
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Selangor, Malaysia
| |
Collapse
|
16
|
Jităreanu A, Cara IG, Sava A, Mârțu I, Caba IC, Agoroaei L. The Impact of the Storage Conditions and Type of Clearomizers on the Increase of Heavy Metal Levels in Electronic Cigarette Liquids Retailed in Romania. TOXICS 2022; 10:toxics10030126. [PMID: 35324751 PMCID: PMC8950552 DOI: 10.3390/toxics10030126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/22/2022] [Accepted: 03/03/2022] [Indexed: 11/30/2022]
Abstract
The growing popularity of electronic cigarettes has raised several public health concerns, including the risks associated with heavy metals exposure via e-liquids and vapors. The purpose of this study was to determine, using atomic absorption spectrometry, the concentrations of Pb, Ni, Zn, and Co in some commercially available e-liquid samples from Romania immediately after purchase and after storage in clearomizers. Lead and zinc were found in all investigated samples before storage. The initial concentrations of Pb ranged from 0.13 to 0.26 mg L−1, while Zn concentrations were between 0.04 and 0.07 mg L−1. Traces of nickel appeared in all investigated e-liquids before storage but in very small amounts (0.01–0.02 mg L−1). Co was below the detection limits. We investigated the influence of the storage period (1, 3, and 5 days), storage temperature (22 °C and 40 °C), and type of clearomizer. In most cases, the temperature rise and storage period increase were associated with higher concentrations of heavy metals. This confirms that storage conditions can affect metal transfer and suggests that the temperature of storage is another parameter that can influence this phenomenon.
Collapse
Affiliation(s)
- Alexandra Jităreanu
- Department of Toxicology, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iași, Romania; (A.J.); (I.-C.C.); (L.A.)
| | - Irina Gabriela Cara
- Research Institute for Agriculture and Environment, “Ion Ionescu de la Brad” University of Life Sciences, 700115 Iasi, Romania
- Correspondence:
| | - Alexandru Sava
- Department of Analytical Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iași, Romania;
| | - Ioana Mârțu
- Department of Dental Technology, Faculty of Dental Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iași, Romania;
| | - Ioana-Cezara Caba
- Department of Toxicology, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iași, Romania; (A.J.); (I.-C.C.); (L.A.)
| | - Luminița Agoroaei
- Department of Toxicology, Faculty of Pharmacy, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iași, Romania; (A.J.); (I.-C.C.); (L.A.)
| |
Collapse
|
17
|
Park EJ, Kim SN, Yoon C, Cho JW, Lee GH, Kim DW, Park J, Choi I, Lee SH, Song J, Lim HJ, Kang MS, Lee HS. Repeated intratracheal instillation of zinc oxide nanoparticles induced pulmonary damage and a systemic inflammatory response in cynomolgus monkeys. Nanotoxicology 2021; 15:621-635. [PMID: 33870832 DOI: 10.1080/17435390.2021.1905899] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Recently, some researchers have demonstrated that inhaled zinc oxide nanoparticles (ZnONPs) induce an acute systemic inflammatory response in workers. Considering nonhuman primates are preferably considered an animal model for translational research due to their proven similarity with humans in terms of genetics and physiology, we intratracheally instilled ZnONPs to cynomolgus monkey for 14 days and identified the toxic mechanism and bioaccumulation. ZnONPs were rapidly ionized or aggregated in a simulated pulmonary fluid, and they attracted neutrophils to the lungs and increased the pulmonary level of inflammatory mediators. Additionally, thickened alveolar walls, fibrin clots, and hemorrhages were observed in the lungs of the monkeys instilled with the higher dose accompanied by cell debris in the alveolar ducts and alveoli. Dark-field microscopy images revealed translocation of ZnONPs into other tissues accompanied by an increase in the relative weight of livers to body weight. In addition, when instilled at the higher dose, the albumin/globulin ratio notably decreased compared to the control, whereas the C-reactive protein (CRP) level was significantly elevated. ZnONPs also clearly induced apoptotic cell death in a 24 h exposure to alveolar macrophages. Taken together, part of inhaled ZnONPs may be ionized in the lung, resulting in acute toxic effects, including cell death and tissue damage, and the rest may move to other tissues in the form of particles, causing a systemic inflammatory response. Based on the proven evidence among workers, we also suggest that the CRP level can be recommended as a biomarker for ZnONPs-induced adverse health effects.
Collapse
Affiliation(s)
- Eun-Jung Park
- East-West Medical Science Research Institute, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.,Human Health and Environmental Toxins Research Center, Kyung Hee Medical Science Research Institute, Kyung Hee University, Seoul, Republic of Korea.,Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Seoul, South Korea
| | - Soo Nam Kim
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea.,Bio-Health Convergence Institute GLP Lab, Korea Testing Certification Institute, Cheongju, Republic of Korea
| | - Cheolho Yoon
- Ochang Center, Korea Basic Science Institute, Seoul, South Korea
| | - Jae-Woo Cho
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea.,Toxicologic Pathology Research Group, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Gwang-Hee Lee
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul, South Korea
| | - Dong-Wan Kim
- School of Civil, Environmental, and Architectural Engineering, Korea University, Seoul, South Korea
| | - Junhee Park
- Department of Life Science, University of Seoul, Seoul, South Korea
| | - Inhee Choi
- Department of Life Science, University of Seoul, Seoul, South Korea
| | - Seung Hyeun Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jeongah Song
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea
| | - Hyun-Ji Lim
- Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Seoul, South Korea
| | - Min-Sung Kang
- Department of Biomedical Science and Technology, Graduate school, Kyung Hee University, Seoul, South Korea.,Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea
| | - Hong-Soo Lee
- Jeonbuk Branch Institute, Korea Institute of Toxicology, Jeongeup, Republic of Korea
| |
Collapse
|
18
|
Human Inhalation Study with Zinc Oxide: Analysis of Zinc Levels and Biomarkers in Exhaled Breath Condensate. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021. [PMID: 32860620 DOI: 10.1007/5584_2020_572] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Workers in the zinc processing, for example, welding or hot-dip galvanizing, are exposed to aerosols consisting of particles and gases, including zinc oxide (ZnO), which can affect human health. In this study, we addressed the effects of short-term controlled exposure to nano-sized ZnO on the airway inflammatory markers in healthy volunteers. To this end, we determined the influence of ZnO inhalation on the content of zinc and biomarkers (leukotriene B4 (LTB4), peptide leukotrienes (LTC4/D4/E4), 8-iso-PGF2α, pH, and prostaglandin E2 (PGE2)) in exhaled breath condensate (EBC). Sixteen non-smoking subjects (8 females, 8 men) were exposed to filtered air (sham) or ZnO nanoparticles (0.5, 1.0, and 2.0 mg/m3) for 4 h. EBC samples were collected according to specific study design. We found that the peptide leukotrienes were below the limit of quantification (LOQ) in all the EBC samples. ZnO exposure showed no detectable effect on any other parameters investigated when comparing the two groups. The content of Zn in EBC was unaffected by ZnO inhalation at any concentration used. Therefore, we conclude that the evaluation of Zn and biomarker content in EBC would not be a suitable way to assess the exposure to inhaled ZnO.
Collapse
|
19
|
Monsé C, Raulf M, Jettkant B, van Kampen V, Kendzia B, Schürmeyer L, Seifert CE, Marek EM, Westphal G, Rosenkranz N, Merget R, Brüning T, Bünger J. Health effects after inhalation of micro- and nano-sized zinc oxide particles in human volunteers. Arch Toxicol 2021; 95:53-65. [PMID: 33001223 PMCID: PMC7811523 DOI: 10.1007/s00204-020-02923-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 09/17/2020] [Indexed: 12/29/2022]
Abstract
Inhalation of ZnO particles can cause inflammation of the airways and metal fume fever. It is unclear if different sizes of the particles alter these effects. However, various studies report higher biological activity of other nano-sized particles compared to microparticles. No effects at all were observed after inhalation of micro- and nano-sized zinc oxide (ZnO) particle concentrations of 0.5 mg/m3. Studies with different particle sizes of ZnO at higher exposures are not available. Accordingly, we hypothesized that inhalation of nano-sized ZnO particles induces stronger health effects than the inhalation of the same airborne mass concentration of micro-sized ZnO particles. 16 healthy volunteers (eight men, eight women) were exposed to filtered air and ZnO particles (2.0 mg/m3) for 2 h (one session with nano- and one with micro-sized ZnO) including 1 h of cycling at moderate workload. Effect parameters were symptoms, body temperature, inflammatory markers in blood and in induced sputum. Induced sputum was obtained at baseline examination, 22 h after exposure and at the end of the final test. The effects were assessed before, immediately after, about 22 h after, as well as two and three days after each exposure. Neutrophils, monocytes and acute-phase proteins in blood increased 22 h after micro- and nano-sized ZnO exposure. Effects were generally stronger with micro-sized ZnO particles. Parameters in induced sputum showed partial increases on the next day, but the effect strengths were not clearly attributable to particle sizes. The hypothesis that nano-sized ZnO particles induce stronger health effects than micro-sized ZnO particles was not supported by our data. The stronger systemic inflammatory responses after inhalation of micro-sized ZnO particles can be explained by the higher deposition efficiency of micro-sized ZnO particles in the respiratory tract and a substance-specific mode of action, most likely caused by the formation of zinc ions.
Collapse
Affiliation(s)
- Christian Monsé
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany.
| | - Monika Raulf
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Birger Jettkant
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Vera van Kampen
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Benjamin Kendzia
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Leonie Schürmeyer
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Christoph Edzard Seifert
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Eike-Maximilian Marek
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Götz Westphal
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Nina Rosenkranz
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Rolf Merget
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Thomas Brüning
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| | - Jürgen Bünger
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum (IPA), Bürkle-de-la-Camp-Platz 1, 44789, Bochum, Germany
| |
Collapse
|
20
|
Verdon R, Gillies SL, Brown DM, Henry T, Tran L, Tyler CR, Rossi AG, Stone V, Johnston HJ. Neutrophil activation by nanomaterials in vitro: comparing strengths and limitations of primary human cells with those of an immortalized (HL-60) cell line. Nanotoxicology 2020; 15:1-20. [PMID: 33272088 DOI: 10.1080/17435390.2020.1834635] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Assessment of nanomaterial (NM) induced inflammatory responses has largely relied on rodent testing via measurement of leukocyte accumulation in target organs. Despite observations that NMs activate neutrophil driven inflammatory responses in vivo, a limited number of studies have investigated neutrophil responses to NMs in vitro. We compared responses between the human neutrophil-like HL-60 cell line and human primary neutrophils following exposure to silver (Ag), zinc oxide (ZnO), copper oxide (CuO) and titanium dioxide (TiO2) NMs. NM cytotoxicity and neutrophil activation were assessed by measuring cellular metabolic activity, cytokine production, respiratory burst, and release of neutrophil extracellular traps. We observed a similar pattern of response between HL-60 cells and primary neutrophils, however we report that some neutrophil functions are compromised in the cell line. Ag NMs were consistently observed to stimulate neutrophil activation, with CuO NMs inducing similar though weaker responses. TiO2 NMs did not induce a neutrophil response in either cell type. Interestingly, ZnO NMs readily induced activation of HL-60 cells but did not appear to activate primary cells. Our findings are relevant to the development of a tiered testing strategy for NM hazard assessment which promotes the use of non-rodent models. Whilst we acknowledge that HL-60 cells may not be a perfect substitute for primary cells and require further investigation regarding their ability to predict neutrophil activation, we recommend their use for initial screening of NM-induced inflammation. Primary human neutrophils can then be used for more focused assessments of neutrophil activation before progressing to in vivo models where necessary.
Collapse
Affiliation(s)
- Rachel Verdon
- Nano-Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | | | - David M Brown
- Nano-Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | - Theodore Henry
- Nano-Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | - Lang Tran
- Statistics and Toxicology Section, Institute of Occupational Medicine, Edinburgh, UK
| | - Charles R Tyler
- College of Life and Environmental Sciences, University of Exeter, Exeter, UK
| | - Adriano G Rossi
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| | - Vicki Stone
- Nano-Safety Research Group, Heriot-Watt University, Edinburgh, UK
| | | |
Collapse
|
21
|
Olejnik M, Kersting M, Rosenkranz N, Loza K, Breisch M, Rostek A, Prymak O, Schürmeyer L, Westphal G, Köller M, Bünger J, Epple M, Sengstock C. Cell-biological effects of zinc oxide spheres and rods from the nano- to the microscale at sub-toxic levels. Cell Biol Toxicol 2020; 37:573-593. [PMID: 33205376 PMCID: PMC8384809 DOI: 10.1007/s10565-020-09571-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/04/2020] [Indexed: 12/12/2022]
Abstract
Zinc oxide particles were synthesized in various sizes and shapes, i.e., spheres of 40-nm, 200-nm, and 500-nm diameter and rods of 40∙100 nm2 and 100∙400 nm2 (all PVP-stabilized and well dispersed in water and cell culture medium). Crystallographically, the particles consisted of the hexagonal wurtzite phase with a primary crystallite size of 20 to 100 nm. The particles showed a slow dissolution in water and cell culture medium (both neutral; about 10% after 5 days) but dissolved within about 1 h in two different simulated lysosomal media (pH 4.5 to 4.8). Cells relevant for respiratory exposure (NR8383 rat alveolar macrophages) were exposed to these particles in vitro. Viability, apoptosis, and cell activation (generation of reactive oxygen species, ROS, release of cytokines) were investigated in an in vitro lung cell model with respect to the migration of inflammatory cells. All particle types were rapidly taken up by the cells, leading to an increased intracellular zinc ion concentration. The nanoparticles were more cytotoxic than the microparticles and comparable with dissolved zinc acetate. All particles induced cell apoptosis, unlike dissolved zinc acetate, indicating a particle-related mechanism. Microparticles induced a stronger formation of reactive oxygen species than smaller particles probably due to higher sedimentation (cell-to-particle contact) of microparticles in contrast to nanoparticles. The effect of particle types on the cytokine release was weak and mainly resulted in a decrease as shown by a protein microarray. In the particle-induced cell migration assay (PICMA), all particles had a lower effect than dissolved zinc acetate. In conclusion, the biological effects of zinc oxide particles in the sub-toxic range are caused by zinc ions after intracellular dissolution, by cell-to-particle contacts, and by the uptake of zinc oxide particles into cells. Graphical headlights • The cytotoxicity of zinc oxide particles is mainly due to the intracellular release of zinc ions. • The size and shape of zinc oxide micro- and nanoparticles has only small effects on lung cells in the sub-toxic range. • Zinc oxide particles are rapidly taken up by cells, regardless of their size and shape. • Zinc oxide particles rapidly dissolve after cellular uptake in endolysosomes. ![]()
Collapse
Affiliation(s)
- M Olejnik
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - M Kersting
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum, Bochum, Germany
| | - N Rosenkranz
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany
| | - K Loza
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - M Breisch
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum, Bochum, Germany
| | - A Rostek
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - O Prymak
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany
| | - L Schürmeyer
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany
| | - G Westphal
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany
| | - M Köller
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum, Bochum, Germany
| | - J Bünger
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany
| | - M Epple
- Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CeNIDE), University of Duisburg-Essen, Essen, Germany.
| | - C Sengstock
- Bergmannsheil University Hospital/Surgical Research, Ruhr-University Bochum, Bochum, Germany.
| |
Collapse
|
22
|
Miller MR, Poland CA. Nanotoxicology: The Need for a Human Touch? SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001516. [PMID: 32697439 DOI: 10.1002/smll.202001516] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 04/28/2020] [Indexed: 06/11/2023]
Abstract
With the ever-expanding number of manufactured nanomaterials (MNMs) under development there is a vital need for nanotoxicology studies that test the potential for MNMs to cause harm to health. An extensive body of work in cell cultures and animal models is vital to understanding the physicochemical characteristics of MNMs and the biological mechanisms that underlie any detrimental actions to cells and organs. In human subjects, exposure monitoring is combined with measurement of selected health parameters in small panel studies, especially in occupational settings. However, the availability of further in vivo human data would greatly assist the risk assessment of MNMs. Here, the potential for controlled inhalation exposures of MNMs in human subjects is discussed. Controlled exposures to carbon, gold, aluminum, and zinc nanoparticles in humans have already set a precedence to demonstrate the feasibility of this approach. These studies have provided considerable insight into the potential (or not) of nanoparticles to induce inflammation, alter lung function, affect the vasculature, reach the systemic circulation, and accumulate in other organs. The need for further controlled exposures of MNMs in human volunteers - to establish no-effect limits, biological mechanisms, and provide vital data for the risk assessment of MNMs - is advocated.
Collapse
Affiliation(s)
- Mark R Miller
- University/BHF Centre for Cardiovascular Science, University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Craig A Poland
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
| |
Collapse
|
23
|
Coté JJ, Haggstrom J, Vivekanandan R, Coté KA, Real DL, Weber DP, Cheng A, Dubay NG, Farias-Eisner R. COVID-19 and a novel initiative to improve safety by 3D printing personal protective equipment parts from computed tomography. 3D Print Med 2020; 6:20. [PMID: 32785811 PMCID: PMC7422464 DOI: 10.1186/s41205-020-00073-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/30/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Powered air-purifying respirators are in short supply and can break down with extended use. Replacement parts can become hard to acquire. The aim of this study was to create an innovative quality improvement proof of concept using rapid prototyping. METHODS Here we report three cases of 3D printed powered air-purifying respirator parts. 3D printing was performed on all parts using fused deposition modeling with standard polylactic acid, in the same way that presurgical models would be created. Measurements using an electronic caliper as well as CT scans were used to compare an original part to its corresponding 3D printed parts for accuracy. RESULTS Electronic caliper and computed tomography measurements both showed accuracy consistant with current published norms. CONCLUSIONS Ultimately, there will be questions surrounding intellectual property, effectiveness and potential long-term safety for these types of 3D printed parts. Future research should look into the addition of specific nanoparticles from the position of cost, efficacy, safety and improved accuracy.
Collapse
Affiliation(s)
- John J Coté
- Department of Obstetrics and Gynecology CHI Health, Creighton University School of Medicine, Omaha, NE, USA.
| | - John Haggstrom
- Department of Radiology, Creighton University School of Medicine, Omaha, NE, USA
| | - Ranuga Vivekanandan
- Department of Medicine Division of Infectious Disease CHI Health, Creighton University School of Medicine, Omaha, NE, USA
| | | | | | | | - Anne Cheng
- Creighton University School of Medicine, Omaha, NE, USA
| | | | - Robin Farias-Eisner
- Department of Obstetrics and Gynecology CHI Health, Creighton University School of Medicine, Omaha, NE, USA.
| |
Collapse
|
24
|
Larsen ST, Da Silva E, Hansen JS, Jensen ACØ, Koponen IK, Sørli JB. Acute Inhalation Toxicity After Inhalation of ZnO Nanoparticles: Lung Surfactant Function Inhibition In Vitro Correlates With Reduced Tidal Volume in Mice. Int J Toxicol 2020; 39:321-327. [DOI: 10.1177/1091581820933146] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
People can be exposed to zinc oxide (ZnO) by inhalation of consumer products or during industrial processes. Zinc oxide nanoparticle (NP) exposure can induce acute inhalation toxicity. The toxicological mechanisms underlying the acute effects on the lungs have long focused on the phagolysosomal dissolution of ZnO NPs in macrophages followed by the release of free Zn2+ ions. However, we postulate an alternative mechanism based on the direct interaction of ZnO NPs with the lung surfactant (LS) layer covering the inside of the alveoli. Therefore, we tested the effect of ZnO NPs and Zn2+ ions on the function of LS in vitro using the constrained drop surfactometer. We found that the ZnO NPs inhibited the LS function, whereas Zn2+ ions did not. To examine the role of lung macrophages in the acute toxicity of inhaled ZnO NPs, mice were treated with Clodrosome, a drug that depletes alveolar macrophages, or Encapsome, the empty carrier of the drug. After macrophage depletion, the mice were exposed to an aerosol of ZnO NPs in whole body plethysmographs recording breathing patterns continuously. Mice in both groups developed shallow breathing (reduced tidal volume) shortly after the onset of exposure to ZnO NPs. This suggests a macrophage-independent mechanism of induction. This study shows that acute inhalation toxicity is caused by ZnO NP interaction with LS, independently of NP dissolution in macrophages.
Collapse
Affiliation(s)
- Søren T. Larsen
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
- * Søren T. Larsen and Emilie Da Silva contributed equally and share first authorship
| | - Emilie Da Silva
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
- Department of Environmental Engineering, Technical University of Denmark, Lyngby, Denmark
- * Søren T. Larsen and Emilie Da Silva contributed equally and share first authorship
| | - Jitka S. Hansen
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
| | | | - Ismo K. Koponen
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
| | - Jorid B. Sørli
- National Research Centre for the Working Environment, Copenhagen Ø, Denmark
| |
Collapse
|
25
|
Exposure to Zinc Oxide Nanoparticles Disrupts Endothelial Tight and Adherens Junctions and Induces Pulmonary Inflammatory Cell Infiltration. Int J Mol Sci 2020; 21:ijms21103437. [PMID: 32414036 PMCID: PMC7279309 DOI: 10.3390/ijms21103437] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/27/2020] [Accepted: 05/11/2020] [Indexed: 12/19/2022] Open
Abstract
Zinc oxide nanoparticles (ZnONPs) are frequently encountered nanomaterials in our daily lives. Despite the benefits of ZnONPs in a variety of applications, many studies have shown potential health hazards of exposure to ZnONPs. We have shown that oropharyngeal aspiration of ZnONPs in mice increases lung inflammation. However, the detailed mechanisms underlying pulmonary inflammatory cell infiltration remain to be elucidated. Endothelium functions as a barrier between the blood stream and the blood vessel wall. Endothelial barrier dysfunction may increase infiltration of immune cells into the vessel wall and underlying tissues. This current study examined the effects of ZnONPs exposure on endothelial barriers. ZnONPs exposure increased leukocyte infiltration in the mouse lungs. In endothelial cells, ZnONPs reduced the continuity of tight junction proteins claudin-5 and zonula occludens-1 (ZO-1) at the cell junctions. ZnONPs induced adherens junction protein VE-cadherin internalization from membrane to cytosol and dissociation with β-catenin, leading to reduced and diffused staining of VE-cadherin and β-catenin at cell junctions. Our results demonstrated that ZnONPs disrupted both tight and adherens junctions, compromising the integrity and stability of the junction network, leading to inflammatory cell infiltration. Thus, ZnONPs exposure in many different settings should be carefully evaluated for vascular effects and subsequent health impacts.
Collapse
|