1
|
Lu TY, Wu CD, Huang YT, Chen YC, Chen CJ, Yang HI, Pan WC. Exposure to PM 2.5 Metal Constituents and Liver Cancer Risk in REVEAL-HBV. J Epidemiol 2024; 34:87-93. [PMID: 36908115 PMCID: PMC10751193 DOI: 10.2188/jea.je20220262] [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: 09/30/2022] [Accepted: 02/05/2023] [Indexed: 03/13/2023] Open
Abstract
BACKGROUND Ambient particulate matter is classified as a human Class 1 carcinogen, and recent studies found a positive relationship between fine particulate matter (PM2.5) and liver cancer. Nevertheless, little is known about which specific metal constituent contributes to the development of liver cancer. OBJECTIVE To evaluate the association of long-term exposure to metal constituents in PM2.5 with the risk of liver cancer using a Taiwanese cohort study. METHODS A total of 13,511 Taiwanese participants were recruited from the REVEAL-HBV in 1991-1992. Participants' long-term exposure to eight metal constituents (Ba, Cu, Mn, Sb, Zn, Pb, Ni, and Cd) in PM2.5 was based on ambient measurement in 2002-2006 followed by a land-use regression model for spatial interpolation. We ascertained newly developed liver cancer (ie, hepatocellular carcinoma [HCC]) through data linkage with the Taiwan Cancer Registry and national health death certification in 1991-2014. A Cox proportional hazards model was utilized to assess the association between exposure to PM2.5 metal component and HCC. RESULTS We identified 322 newly developed HCC with a median follow-up of 23.1 years. Long-term exposure to PM2.5 Cu was positively associated with a risk of liver cancer. The adjusted hazard ratio (HR) was 1.13 (95% confidence interval [CI], 1.02-1.25; P = 0.023) with one unit increment on Cu normalized by PM2.5 mass concentration in the logarithmic scale. The PM2.5 Cu-HCC association remained statistically significant with adjustment for co-exposures to other metal constituents in PM2.5. CONCLUSION Our findings suggest PM2.5 containing Cu may attribute to the association of PM2.5 exposure with liver cancer.
Collapse
Affiliation(s)
- Tzu-Yi Lu
- Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chih-Da Wu
- Department of Geomatics, National Cheng Kung University, Chiayi, Taiwan
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
| | - Yen-Tsung Huang
- Institue of Statistical Science, Academia Sinica, Taipei, Taiwan
| | - Yu-Cheng Chen
- National Institution of Environmental Health Sciences, National Health Research Institute, Mioli, Taiwan
| | - Chien-Jen Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei, Taiwan
| | - Hwai-I Yang
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wen-Chi Pan
- Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan
| |
Collapse
|
2
|
Vogel U, Saber AT, Jacobsen NR, Danielsen PH, Hougaard KS, Hadrup N. Re-evaluation of the occupational exposure limit for ZnO is warranted. Comments on 'Systemic inflammatory effects of zinc oxide particles: is a re-evaluation of exposure limits needed?' by Christian Monsé et al. Arch Toxicol 2024; 98:567-569. [PMID: 38038737 PMCID: PMC10794257 DOI: 10.1007/s00204-023-03634-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/07/2023] [Indexed: 12/02/2023]
Affiliation(s)
- Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen, Denmark.
| | - Anne T Saber
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Nicklas R Jacobsen
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | | | - Karin S Hougaard
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Niels Hadrup
- National Research Centre for the Working Environment, Copenhagen, Denmark
| |
Collapse
|
3
|
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
|
4
|
Krabbe J, Hansen C, Otte N, Kraus T. Short-term exposure to zinc- and copper-containing welding fumes: Effects on pulmonary function in humans. J Trace Elem Med Biol 2023; 78:127169. [PMID: 37004479 DOI: 10.1016/j.jtemb.2023.127169] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 01/06/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023]
Abstract
Zinc- and copper-containing welding fumes typically induce a systemic inflammation indicated by increase in C-reactive protein (CRP) levels, also known as welding fume fever. It typically includes symptoms like fever, myalgia or headaches, but only a quarter of patients experience respiratory symptoms, e.g. coughing. This retrospective analysis of data of three studies with either control (filtered air) or zinc- and copper-containing welding fume exposure aims to identify and characterize the effect of the welding fumes on lung function. Spirometry and body plethysmography data of male healthy volunteers were analyzed and comparisons between different timepoints after a 6 h exposure were conducted. For controls no significant changes in spirometry were observed between baseline and 6 h, 24 h and 1 week after exposure. For volunteers exposed to zinc- and copper-containing welding fumes no significant reductions in forced expiratory volume in 1 s (FEV1) and minimal reductions in vital capacity (VC) (52 ml, 0.9%) were detected after 6 h. After 24 h significant reductions in FEV1 (147 ml, 3.2%) and VC (162 ml, 2.9%) could be observed. 1 week after exposure FEV1 was still significantly reduced (102 ml, 2.1%) and airway resistance were increased while no differences in VC were detected. The reduction of FEV1% after 24 week significantly correlated with increases in CRP levels. In conclusion, a single exposure to zinc- and copper-containing welding fumes leads not only to a systemic inflammation but could also induce slight sustained airway constrictions after 24 h and 1 week. The observed slight airway constriction is not caused by immediate effects but possibly inflammatory processes. Although welding fume fever does not necessarily present respiratory symptoms, welders exposed to zinc- and copper-containing welding fumes should be monitored for respiratory symptoms and obstructive ventilation pattern.
Collapse
Affiliation(s)
- Julia Krabbe
- Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany.
| | - Christine Hansen
- Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Nelly Otte
- Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Thomas Kraus
- Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| |
Collapse
|
5
|
Gutierrez CT, Loizides C, Hafez I, Brostrøm A, Wolff H, Szarek J, Berthing T, Mortensen A, Jensen KA, Roursgaard M, Saber AT, Møller P, Biskos G, Vogel U. Acute phase response following pulmonary exposure to soluble and insoluble metal oxide nanomaterials in mice. Part Fibre Toxicol 2023; 20:4. [PMID: 36650530 PMCID: PMC9843849 DOI: 10.1186/s12989-023-00514-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Acute phase response (APR) is characterized by a change in concentration of different proteins, including C-reactive protein and serum amyloid A (SAA) that can be linked to both exposure to metal oxide nanomaterials and risk of cardiovascular diseases. In this study, we intratracheally exposed mice to ZnO, CuO, Al2O3, SnO2 and TiO2 and carbon black (Printex 90) nanomaterials with a wide range in phagolysosomal solubility. We subsequently assessed neutrophil numbers, protein and lactate dehydrogenase activity in bronchoalveolar lavage fluid, Saa3 and Saa1 mRNA levels in lung and liver tissue, respectively, and SAA3 and SAA1/2 in plasma. Endpoints were analyzed 1 and 28 days after exposure, including histopathology of lung and liver tissues. RESULTS All nanomaterials induced pulmonary inflammation after 1 day, and exposure to ZnO, CuO, SnO2, TiO2 and Printex 90 increased Saa3 mRNA levels in lungs and Saa1 mRNA levels in liver. Additionally, CuO, SnO2, TiO2 and Printex 90 increased plasma levels of SAA3 and SAA1/2. Acute phase response was predicted by deposited surface area for insoluble metal oxides, 1 and 28 days post-exposure. CONCLUSION Soluble and insoluble metal oxides induced dose-dependent APR with different time dependency. Neutrophil influx, Saa3 mRNA levels in lung tissue and plasma SAA3 levels correlated across all studied nanomaterials, suggesting that these endpoints can be used as biomarkers of acute phase response and cardiovascular disease risk following exposure to soluble and insoluble particles.
Collapse
Affiliation(s)
- Claudia Torero Gutierrez
- grid.5254.60000 0001 0674 042XSection of Environmental Health, Department of Public Health, University of Copenhagen, Copenhagen, Denmark ,grid.418079.30000 0000 9531 3915National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Charis Loizides
- grid.426429.f0000 0004 0580 3152Atmosphere and Climate Research Centre, The Cyprus Institute, Nicosia, Cyprus
| | - Iosif Hafez
- grid.426429.f0000 0004 0580 3152Atmosphere and Climate Research Centre, The Cyprus Institute, Nicosia, Cyprus
| | - Anders Brostrøm
- grid.5170.30000 0001 2181 8870National Centre for Nano Fabrication and Characterization, Technical University of Denmark, Copenhagen, Denmark
| | - Henrik Wolff
- grid.6975.d0000 0004 0410 5926Finnish Institute of Occupational Health, Helsinki, Finland
| | - Józef Szarek
- grid.412607.60000 0001 2149 6795Department of Pathophysiology, Forensic Veterinary Medicine and Administration, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Trine Berthing
- grid.418079.30000 0000 9531 3915National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Alicja Mortensen
- grid.418079.30000 0000 9531 3915National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Keld Alstrup Jensen
- grid.418079.30000 0000 9531 3915National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Martin Roursgaard
- grid.5254.60000 0001 0674 042XSection of Environmental Health, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Anne Thoustrup Saber
- grid.418079.30000 0000 9531 3915National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Peter Møller
- grid.5254.60000 0001 0674 042XSection of Environmental Health, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - George Biskos
- grid.426429.f0000 0004 0580 3152Atmosphere and Climate Research Centre, The Cyprus Institute, Nicosia, Cyprus ,grid.5292.c0000 0001 2097 4740Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands
| | - Ulla Vogel
- National Research Centre for the Working Environment, Copenhagen, Denmark.
| |
Collapse
|
6
|
Krabbe J, Kraus T, Krabbe H, Martin C, Ziegler P. Welding Fume Instillation in Isolated Perfused Mouse Lungs-Effects of Zinc- and Copper-Containing Welding Fumes. Int J Mol Sci 2022; 23:ijms23169052. [PMID: 36012318 PMCID: PMC9408907 DOI: 10.3390/ijms23169052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/08/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022] Open
Abstract
Zinc- and copper-containing welding fumes can cause systemic inflammation after exposure in humans. Recent ex vivo studies have shown that the observed inflammation originates from exposed immune cells. In vitro studies identified the soluble fraction of metal particles as the main effectors. Isolated perfused mouse lungs (IPLs) were perfused and ventilated for 270 min. Lungs were instilled with saline solution (control), welding fume particle suspension (WFs) or the soluble fraction of the welding fumes (SF-WFs). Bronchoalveolar lavage fluid (BALF) and perfusate samples were analyzed for cytokine levels and lung tissue mRNA expression levels were analyzed via RT-PCR. All lungs instilled with WFs did not complete the experiments due to a fatal reduction in tidal volume. Accordingly, IL-6 and MPO levels were significantly higher in BALF of WF lungs compared to the control. IL-6 and MPO mRNA expression levels were also increased for WFs. Lungs instilled with SF-WFs only showed mild reactions in tidal volume, with BALF and mRNA expression levels not significantly differing from the control. Zinc- and copper-containing welding fume particles adversely affect IPLs when instilled, as evidenced by the fatal loss in tidal volume and increased cytokine expression and secretion. The effects are mainly caused by the particles, not by the soluble fraction.
Collapse
Affiliation(s)
- Julia Krabbe
- Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
- Correspondence: ; Tel.: +49-241-8035028; Fax: +49-241-8082587
| | - Thomas Kraus
- Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Hanif Krabbe
- European Vascular Centre Aachen-Maastricht, Department of Vascular Surgery, Medical Faculty, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Christian Martin
- Institute of Pharmacology and Toxicology, Medical Faculty, RWTH Aachen University, Wendlingweg 2, 52074 Aachen, Germany
| | - Patrick Ziegler
- Institute of Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| |
Collapse
|
7
|
Fouad MM, Ramadan MA. Serum intracellular adhesion molecule-1 and interleukin-8 as predictors of pulmonary impairment among workers in secondary copper smelters. Int Arch Occup Environ Health 2021; 95:365-375. [PMID: 34609586 DOI: 10.1007/s00420-021-01770-3] [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: 02/22/2021] [Accepted: 06/21/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Copper smelter workers are exposed to harmful chemical agents in dust and fumes which contain harmful metals such as copper and arsenic. These substances are known to be respiratory irritants. METHODS This study aimed at investigating the effect of occupational exposure to copper and arsenic on the respiratory system. A group of 75 male exposed workers, and 75 male administrative employees (control group) were recruited from a secondary copper smelting factory. Full history, complete clinical examination, ventilatory function parameters (FVC, FEV1, FVC/FEV1 and FEF), and chest X-ray were done for both groups. Serum levels of ICAM-1 and IL8 (as markers of epithelial injury) were measured by ELISA. Serum copper and arsenic were measured by atomic absorption spectrophotometer. RESULTS The exposed group was associated with increased respiratory symptoms, higher serum copper, arsenic, and ICAM-1and Il-8 as compared to the control group. There was a significant decrease in ventilatory parameters among the exposed group: 58.7% of the exposed group had restrictive lung impairment, 40% had obstructive impairment. In the exposed group a positive correlation between serum copper, arsenic and serum ICAM and IL8 was found. While a negative correlation was observed between both serum ICAM, IL8 and ventilatory parameters among the exposed group. Moreover, 36% of the exposed group had radiological infiltrates on chest X.ray. CONCLUSION Occupational exposure to copper and arsenic was associated with ventilatory and radiological impairment, with a corresponding increase in the serum level of ICAM-1 and IL8, which can be used as biomarkers for pulmonary impairment among copper smelter workers.
Collapse
Affiliation(s)
- Marwa Mohammed Fouad
- Occupational and Environmental Medicine Department, Faculty of Medicine, Cairo University, Giza, Egypt
| | - Mona Abdallah Ramadan
- Occupational and Environmental Medicine Department, Faculty of Medicine, Cairo University, Giza, Egypt.
| |
Collapse
|
8
|
Brand P, Ebert B, Esser A, Sharma R. Direct Exposure of Welders to Welding Fumes and Effect of Fume Extraction Systems Under Controlled Conditions. J Occup Environ Med 2021; 63:490-502. [PMID: 34048382 DOI: 10.1097/jom.0000000000002167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Welding fume exposure of welders occurs either directly from the welding process and sputters or from the fume background within the workshop. In this study the contribution of fume originating directly from the welding process was assessed. METHODS Exposure was quantified by measuring the time integral of fume mass concentration using a tapered element oscillating micro balance connected to a welder dummy. RESULTS Direct fume exposure was highest for welding processes with low fume emission rates and lowest for processes with high fume emission rates. CONCLUSIONS This finding is supposed to be due to the higher energy input of high emitting processes which stabilizes the thermic column and therefore eliminates fume particles from the welder's breathing zone. Exposure can be minimized by additionally optimizing workshop ventilation.
Collapse
Affiliation(s)
- Peter Brand
- Institute for Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen (Dr Brand, Dr Esser); and Welding and Joining Institute (Mr Ebert, Mr Sharma), RWTH Aachen, Aachen, Germany
| | | | | | | |
Collapse
|
9
|
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 2020; 95:53-65. [PMID: 33001223 PMCID: PMC7811523 DOI: 10.1007/s00204-020-02923-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [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
|
10
|
No Observed Effect Level (NOEL) for Systemic Inflammation by Copper and Zinc in Welding Fumes. J Occup Environ Med 2020; 62:718-723. [PMID: 32890210 DOI: 10.1097/jom.0000000000001946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
: Copper and zinc containing welding fumes are able to induce systemic inflammation in healthy subjects. In this study the no observed effect levels (NOEL) for welding fumes containing either copper or zinc were assessed.Fifteen healthy male volunteers participated in an exposure. Each subject was exposed to two different concentrations of both, copper and zinc containing welding fumes. Exposure was performed in the Aachen Workplace Simulation Lab.The NOEL was found at metal concentrations between 0.2 and 0.3 mg/m for copper and between 0.8 and 1.2 mg/m for zinc.The NOEL identified in this study was about a factor of 10 higher than the German workplace threshold limit values (TLV). However, TLV in other countries was in the same range or even higher than the NOEL indicating a considerable risk for workers.
Collapse
|
11
|
Jian Z, Guo H, Liu H, Cui H, Fang J, Zuo Z, Deng J, Li Y, Wang X, Zhao L. Oxidative stress, apoptosis and inflammatory responses involved in copper-induced pulmonary toxicity in mice. Aging (Albany NY) 2020; 12:16867-16886. [PMID: 32952128 PMCID: PMC7521514 DOI: 10.18632/aging.103585] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 05/27/2020] [Indexed: 01/24/2023]
Abstract
At present, there are few studies focused on the relationship between copper (Cu) and oxidative stress, apoptosis, or inflammatory responses in animal and human lungs. This study was conducted to explore the effects of Cu on pulmonary oxidative stress, apoptosis and inflammatory responses in mice orally administered with 0 mg/kg (control), 10 mg/kg, 20 mg/kg, and 40 mg/kg of CuSO4 for 42 days. The results showed that CuSO4 increased ROS production, and MDA, 8-OHdG and NO contents as well as iNOS activities and mRNA expression levels. Meanwhile, CuSO4 reduced the activities and mRNA expression levels of antioxidant enzymes (GSH-Px, CAT, and SOD) and GSH contents, and ASA and AHR abilities. Also, CuSO4 induced apoptosis, which was accompanied by decreasing Bcl-2, Bcl-xL mRNA expression levels and protein expression levels, and increasing Bax, Bak, cleaved-caspase-3, cleaved-caspase-9 mRNA, and protein expression levels, and Bax/Bcl-2 ratio. Concurrently, CuSO4 caused inflammation by increasing MPO activities and activating the NF-κB signalling pathway, and down-regulating the mRNA and protein expression levels of anti-inflammatory cytokines (IL-2, IL-4, IL-10). In conclusion, the abovementioned findings demonstrated that over 10 mg/kg CuSO4 can cause oxidative stress, apoptosis, and inflammatory responses, which contribute to pulmonary lesions and dysfunction in mice.
Collapse
Affiliation(s)
- Zhijie Jian
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China
| | - Hongrui Guo
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China
| | - Huan Liu
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China,Key Laboratory of Agricultural Information Engineering of Sichuan Province, Sichuan Agriculture University, Yaan 625014, Sichuan, China
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China
| | - Yinglun Li
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China
| | - Xun Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang 611130, Chengdu, China,Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang 611130, Chengdu, China
| |
Collapse
|
12
|
Increased Neutrophil Granulocyte and Myeloperoxidase Levels Indicate Acute Inflammation Due to the Exposure of Zinc- and Copper-Containing Welding Fumes. J Occup Environ Med 2020; 62:618-627. [PMID: 32404823 DOI: 10.1097/jom.0000000000001905] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Recent studies have shown an increase of C-reactive-protein (CRP) after exposure to zinc- and copper-containing welding fumes. The objective of this study was to determine the effects of exposure to zinc- and copper-containing welding fumes on leukocytes, their subtypes, and myeloperoxidase (MPO). METHODS Serum samples of male volunteers were examined after exposures to welding fumes in two settings: repeated exposure on 4 consecutive days for 6 hours and single exposures for different times (3, 4, 5 hours). RESULTS Neutrophil granulocyte and MPO levels showed increases 24 hours after single and repeated exposures for 6 hours similar to CRP increases reported in literature. Overall leukocyte levels and levels of monocytes and lymphocytes were not significantly affected. CONCLUSIONS This study indicates the involvement of neutrophil granulocytes in welding fume fever additional to mediator related effects.
Collapse
|