1
|
Khan SA, Nurulain SM, Qureshi RN, Zafar A, Riaz Z, Shoukat A, Muneer Z, Bibi N, Raza S, Hussain S, Shah STA. Exposure to heavy metals, antioxidant status, and the interaction of single nucleotide polymorphisms in the genes CAT rs7943316, GSTP1 rs1695, as well as GSTM1 and GSTT1 genes, among workers in occupational settings. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2024; 108:104452. [PMID: 38663648 DOI: 10.1016/j.etap.2024.104452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/17/2024] [Indexed: 05/09/2024]
Abstract
Individuals working in diverse fields are consistently exposed to work-related pollutants that can impact their overall health. The current study investigated the presence of pollutants in seven different occupational groups and their impact on human health. Biochemical and genetic approaches were employed. Heavy metals were determined by ICP-MS technique. Oxidative stress biochemical markers and molecular analysis of the glutathione transferases gene SNPs (GSTT1, GSTM1, GSTP1), catalase (CAT, rs7943316), and superoxide dismutase (SOD, rs17880487) was carried out. The results revealed a significantly higher quantity of Cd among five occupational groups. Catalase, malonaldehyde, and glutathione was significantly dysregulated. Molecular analysis of the gene SNPs suggests a probable relationship between the antioxidants and the phenotypic expression of the CAT, GSTP1, GSTT1, and GSTM1 SNPs. It is concluded that chronic exposure to occupational contaminants like Cd affects human health through oxidative stress in association with some of their gene SNPs.
Collapse
Affiliation(s)
- Sosan Andleeb Khan
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Syed Muhammad Nurulain
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan; Department of Biosciences, Grand Asian University Sialkot, Pakistan.
| | - Rashid Nazir Qureshi
- Central Analytical Facility Division, Pakistan Institute of Nuclear Science and Technology (PINSTEC), Pakistan
| | - Amina Zafar
- Central Analytical Facility Division, Pakistan Institute of Nuclear Science and Technology (PINSTEC), Pakistan
| | - Zarish Riaz
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Aneela Shoukat
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Zahid Muneer
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Nazia Bibi
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Saqlain Raza
- Respiratory Care Department, College of Applied Medical Science in Jubail, Imam Abdulrahman Bin Faisal University, Jubail, Saudi Arabia
| | - Sabir Hussain
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan
| | - Syed Tahir Abbas Shah
- Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Park Road Tarlai, Islamabad 45550, Pakistan
| |
Collapse
|
2
|
Pauchet A, Chaussavoine A, Pairon JC, Gabillon C, Didier A, Baldi I, Esquirol Y. Idiopathic Pulmonary Fibrosis: What do we Know about the Role of Occupational and Environmental Determinants? A Systematic Literature Review and Meta-Analysis. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2022; 25:372-392. [PMID: 36253946 DOI: 10.1080/10937404.2022.2131663] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The objectives of this systematic review of original articles published up until August 2021 and meta-analyses were to identify the links between occupational and non-occupational environmental exposures, types of occupations and idiopathic pulmonary fibrosis (IPF). Sixteen selected case-control studies were qualified as good level with Newcastle-Ottawa quality assessment scale. Sensitivity analyses highlighted the role of choice of control group, tobacco adjustment and diagnostic tools. Significantly increased risks of IPF were observed (OR (95%CI): for metals (1.42(1.05-1.92)), wood (OR:1.32(1.02-1.71)), and general dust (OR:1.32(1.08-1.63)) exposures. Subgroup analyses found a significantly elevated risk for: hardwood (OR:1.75 (1.13-2.70)), organic dusts (OR:1.72 (1.20-2.46)) and pesticides (OR:2.30 (1.30-4.08)), while no significant change was noted for softwoods and solvents. Smoking adjustments: general dust (1.45 (1.04-2.03)/organic dust (2.5 (1.49-4.22)/metals (1.87 (1.16-3)/wood dust OR: 1.16 (0.86-1.61)/pesticide exposure 2.4 (0.84-6.9) were calculated. Among agricultural workers, the risk was also increased (OR:2.06 (1.02-4.16)). Few environmental data were available and no significant associations detected. Thus, these meta-analyses highlighted the role of some occupational exposures in IPF occurrence. A more accurate and thorough assessment of exposures over the entire working life as well as on the duration and intensity of exposure and complex of multi-pollutant exposure is needed in future research and clinical practice.
Collapse
Affiliation(s)
- A Pauchet
- Occupational and Environmental Health Department UF3, CHU Toulouse, Toulouse, France
| | - A Chaussavoine
- Occupational and Environmental Health Department UF3, CHU Toulouse, Toulouse, France
| | - J C Pairon
- Faculté de santé. Centre hospitalier intercommunal de Créteil, service de pathologies professionnelles et de l'environnement, INSERM, unité 955, Université Paris-Est Créteil, Créteil, France
| | - C Gabillon
- Service de Santé au Travail, PREVALY, Toulouse, France
| | - A Didier
- Department of Respiratory Medicine, University Hospital Centre of Toulouse, Toulouse, France. Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Inserm U1291, University of Toulouse, CNRS U5282, Toulouse, France
| | - I Baldi
- EPICENE, U1219 INSERM, Université de Bordeaux, and Service Santé Travail Environnement, CHU de Bordeaux, Bordeaux, France
| | - Y Esquirol
- Occupational and Environmental Health Department UF3, CHU Toulouse, Toulouse, France
- CERPOP : Centre d'Epidémiologie et de Recherche en santé des POPulations, Université Paul Sabatier Toulouse, Inserm, Toulouse, France
| |
Collapse
|
3
|
Kargar-Shouroki F, Dehghan Banadkuki MR, Jambarsang S, Emami A. The association between wood dust exposure and respiratory disorders and oxidative stress among furniture workers. Wien Klin Wochenschr 2022; 134:529-537. [PMID: 35729276 PMCID: PMC9211781 DOI: 10.1007/s00508-022-02048-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/19/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND This study was undertaken to determine the effect of wood dust on the respiratory system and oxidative stress in furniture workers and to determine whether any associations exist between respiratory parameters and oxidative stress. METHODS This cross-sectional study was performed on 45 furniture workers and 45 office workers as a reference group in Iran. The NIOSH method 0600 was used to determine the concentration of particulates. The prevalence of respiratory symptoms was estimated via the European Community Respiratory Health Survey (ECRHS) questionnaire. Oxidative stress biomarkers and respiratory parameters were also measured. RESULTS The mean concentrations of respirable and non-respirable dust were found to be 1.51 mg/m3 and 1.23 mg/m3, respectively. Pulmonary function parameters, including forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), FEV1/FVC, and antioxidant capacity biomarkers such as total antioxidant capacity (TAC) and superoxide dismutase (SOD) were significantly lower, while the prevalence of respiratory symptoms, and malondialdehyde (MDA) levels, were significantly higher in the furniture workers than in the reference group. There were significant positive associations between FVC and FEV1 with SOD and TAC. CONCLUSION The present study results indicated that exposure to wood dust significantly increased respiratory disorders and confirmed the association between lung function parameters and oxidative stress.
Collapse
Affiliation(s)
- Fatemeh Kargar-Shouroki
- Occupational Health Research Center, Department of Occupational Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Muhammd Reza Dehghan Banadkuki
- Occupational Health Research Center, Department of Occupational Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Sara Jambarsang
- Center for Healthcare Data Modeling, Departments of Biostatistics and Epidemiology, School of public health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Azadeh Emami
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| |
Collapse
|
4
|
Ex vivo pulmonary assay applied for screening of toxicity potential of chemicals. Food Chem Toxicol 2022; 161:112820. [PMID: 35033595 DOI: 10.1016/j.fct.2022.112820] [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: 05/11/2021] [Revised: 12/03/2021] [Accepted: 01/10/2022] [Indexed: 10/19/2022]
Abstract
Acute inhalation toxicity testing for chemical classification and labeling has been performed using animal models, however, these models have limited predictibility of the toxicity on the respiratory system. Thus, non-animal models have been emerging as alternatives for preclinical assessment of respiratory toxicity of chemicals, comprising in chemico, in vitro, ex vivo, and in silico approaches. In this study, we characterized and evaluated the applicability of a new ex vivo bovine bronchial model for addressing key aspects of pulmonary toxicity. Standardized bronchial fragments were cultured at an air-liquid interface for seven days showing cell viability, morphology, and function during the ex vivo time of cultivation. Different exposure ways, liquid or aerosol exposure, were also studied using paraformaldehyde (PFA) as a positive control. In a concentration-dependent manner, a decrease in tissue viability was observed for aerosols instead of direct liquid exposure upon tissue surface. Moreover, PFA exposure allowed the addressment of several damage biomarkers, including epithelium thickness, mitochondrial activity, ROS production, and caspase-3 activation. Besides, the bronquial tissue was exposed to chemicals from different UN GHS inhalation toxicity categories and presented a concentration-dependent response for most of the evaluated materials. The proposed airway ex vivo model represents a low-cost and reproducible tool applicable for pulmonary toxicity assessment of chemicals.
Collapse
|
5
|
Cavallo D, Fresegna AM, Ciervo A, Ursini CL, Maiello R, Del Frate V, Ferrante R, Mabilia R, Pizzo B, Grossi B, Ciccioli P, Ciccioli P, Iavicoli S. New formaldehyde-free adhesives for wood manufacturing: In vitro evaluation of potential toxicity of fine dust collected during wood sawing using a new experimental model to simulate occupational inhalation exposure. Toxicology 2021; 466:153085. [PMID: 34968639 DOI: 10.1016/j.tox.2021.153085] [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: 10/25/2021] [Revised: 12/17/2021] [Accepted: 12/24/2021] [Indexed: 10/19/2022]
Abstract
Formaldehyde mainly emitted from wood adhesives, finishing materials, paint for furniture represents, together with wood dust, a potential carcinogenic risk for wood workers. Aims of this multidisciplinary study are to investigate the possibility of replacing urea-formaldehyde (UF) adhesives in the wood industry with organic and/or inorganic-based glues to obtain a final less toxic product and to evaluate the potential toxicity of wood glued with such new adhesives. For this purpose we selected poplar wood to test an organic new adhesive HBP (Hemp Based Protein), a mixture of hemp flour and cross-linker PAE (polyaminoamide epichlorohydrin), and spruce wood to test an inorganic adhesive geopolymer K-PSS (potassium-polysiloxosialate) plus polyvinyl acetate. For the poplar wood, we also used a commercial panel glued with UF for comparison. We reproduced occupational inhalation exposure during sawing activities of mentioned woods, collected and characterized the wood dusts emitted during sawing and evaluated in vitro their potential cyto-genotoxic and inflammatory effects. We used human lung cells (A549) exposed for 24 h to 20 and 100 µg/mL of collected PM2.5 wood dust. We found that both the new adhesives wood dusts induced a slightly higher apoptotic effect than untreated natural wood dusts particularly in spruce wood. Only geopolymer K-PSS wood dust induced membrane damage at the highest concentration and direct and oxidative DNA damage that could be explained by the different chemical composition and the lower particle sizes in respect to organic HBP adhesive wood dust. We found slight induction of IL6 release, not influenced by K-PSS treatment, at the highest concentration in spruce wood. For poplar wood, IL-6 and IL-8 induction was found particularly for untreated and UF-treated wood at the highest concentration, where hemp adhesive treatment induced lower inflammation while at lower concentration similar slight cytokine induction was found for all tested wood dusts. This preliminary study shows that natural adhesives used to replace UF adhesives represent an interesting alternative, particularly the organic hemp-based adhesive showing very low toxicity.
Collapse
Affiliation(s)
- Delia Cavallo
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy.
| | - Anna Maria Fresegna
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy
| | - Aureliano Ciervo
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy
| | - Cinzia Lucia Ursini
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy
| | - Raffaele Maiello
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy
| | - Valentina Del Frate
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy
| | - Riccardo Ferrante
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy
| | - Rosanna Mabilia
- Consiglio Nazionale delle Ricerche, Dipartimento di Scienze Bio Agroalimentari (CNR-DISBA), Rome, Italy
| | - Benedetto Pizzo
- Consiglio Nazionale delle Ricerche, Istituto per la Bioeconomia (CNR-IBE), Sesto Fiorentino, Firenze, Italy
| | - Bernardo Grossi
- Consiglio Nazionale delle Ricerche, Istituto per la Bioeconomia (CNR-IBE), Sesto Fiorentino, Firenze, Italy
| | - Paolo Ciccioli
- Consiglio Nazionale delle Ricerche, Istituto per i Sistemi Biologici (CNR-ISB), Montelibretti, Rome, Italy
| | - Piero Ciccioli
- Consiglio Nazionale delle Ricerche, Istituto per i Sistemi Biologici (CNR-ISB), Montelibretti, Rome, Italy
| | - Sergio Iavicoli
- Department of Occupational and Environmental Medicine, Epidemiology and Hygiene, INAIL - Italian Workers' Compensation Authority, Monte Porzio Catone, Rome, Italy
| |
Collapse
|
6
|
Ghelli F, Bellisario V, Squillacioti G, Grignani E, Garzaro G, Buglisi M, Bergamaschi E, Bono R. Oxidative stress induction in woodworkers occupationally exposed to wood dust and formaldehyde. J Occup Med Toxicol 2021; 16:4. [PMID: 33563312 PMCID: PMC7871551 DOI: 10.1186/s12995-021-00293-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 01/29/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Many workers are exposed to wood dust (WD) and formaldehyde (FA), whose carcinogenic activity is supposed to be oxidative stress-mediated. This study aims to assess to what extent the occupational exposure to WD and FA, albeit within regulatory limits, could result in OS induction in a woodworkers' population. METHODS The sample population consisted of 127 woodworkers from 4 factories and 111 unexposed controls. Individual exposure was assessed by personal air-samplers. Each participant enrolled in the study filled out a questionnaire and provided a urinary sample to quantify OS biomarkers, namely 15-F2t-IsoProstane (15-F2t-IsoP) and 7,8-dihydro-8-oxo-2'-deoxyguanosine (8-oxo-dGuo). The main confounding factor for OS, i.e. tobacco smoking exposure, was assessed by measuring cotinine in urine samples. RESULTS Woodworkers were exposed to significantly higher amounts of WD and FA as compared to controls (p < 0.001). Among OS biomarkers, 15-F2t-IsoP showed statistically significant higher values in woodworkers compared to controls (p = 0.004). A significant, positive correlation was observed between 15-F2t-IsoP and 8-oxo-dGuo (p = 0.005), cotinine (p = 0.05), FA (p < 0.001) and WD (p = 0.01); 8-oxo-dGuo was significantly correlated with cotinine (p = 0.001) and WD (p = 0.004). In addition, WD and FA were significantly correlated each other (p < 0.001). CONCLUSIONS The study confirms that WD and FA may induce OS in woodworkers, and highlights that even the compliance with occupational exposure limits can result in measurable biological outcomes.
Collapse
Affiliation(s)
- Federica Ghelli
- Department of Public Health and Pediatrics, University of Turin, via Santena 5 bis, 10126, Turin, Italy
| | - Valeria Bellisario
- Department of Public Health and Pediatrics, University of Turin, via Santena 5 bis, 10126, Turin, Italy
| | - Giulia Squillacioti
- Department of Public Health and Pediatrics, University of Turin, via Santena 5 bis, 10126, Turin, Italy
| | - Elena Grignani
- Maugeri Scientific Clinical Institutes, Via Salvatore Maugeri, 10, 27100, Pavia, Italy
| | - Giacomo Garzaro
- Department of Public Health and Pediatrics, University of Turin, via Zuretti 29, 10126, Turin, Italy
| | - Martina Buglisi
- Department of Public Health and Pediatrics, University of Turin, via Santena 5 bis, 10126, Turin, Italy
| | - Enrico Bergamaschi
- Department of Public Health and Pediatrics, University of Turin, via Zuretti 29, 10126, Turin, Italy
| | - Roberto Bono
- Department of Public Health and Pediatrics, University of Turin, via Santena 5 bis, 10126, Turin, Italy.
| |
Collapse
|
7
|
Saad-Hussein A, Shahy EM, Shaheen W, Ibrahim KS, Mahdy-Abdallah H, Taha MM, Hafez SF. Hepatotoxicity of aflatoxin B1 and its oxidative effects in wood dust Egyptian exposed workers. ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH 2020; 76:561-566. [PMID: 33030118 DOI: 10.1080/19338244.2020.1828246] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The goal of the present study is to estimate the oxidative effects of AFB1 induced hepatotoxicity in furniture wood dust exposed workers. A cross-sectional comparative study was designed for comparing AFB1/albumin (AFB1/alb) levels and liver functions [alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP)], malondialdehyde (MDA), glutathione peroxidase (GPx), catalase (CAT) and superoxide dismutase (SOD) in 88 furniture workers and 78 controls not occupationally exposed to wood dust. The AFB1/Alb, AST, ALT, MDA, and GPx were significantly higher; while, CAT significantly reduced in workers compared with controls. There was a significant correlation between AFB1/Alb and MDA level with the liver enzymes among both groups. CAT was inversely correlated with AFB1/Alb and the liver enzymes, and GPx was inversely correlated with AST in the workers. It was concluded that wood dust exposure is associated with raised serum levels of AFB1 and oxidative stress.
Collapse
Affiliation(s)
- Amal Saad-Hussein
- Environmental & Occupational Medicine Department, Environmental Research Division, National Research Centre, Dokki, Cairo, Egypt
| | - Eman M Shahy
- Environmental & Occupational Medicine Department, Environmental Research Division, National Research Centre, Dokki, Cairo, Egypt
| | - Weam Shaheen
- Environmental & Occupational Medicine Department, Environmental Research Division, National Research Centre, Dokki, Cairo, Egypt
| | - Khadiga S Ibrahim
- Environmental & Occupational Medicine Department, Environmental Research Division, National Research Centre, Dokki, Cairo, Egypt
| | - Heba Mahdy-Abdallah
- Environmental & Occupational Medicine Department, Environmental Research Division, National Research Centre, Dokki, Cairo, Egypt
| | - Mona M Taha
- Environmental & Occupational Medicine Department, Environmental Research Division, National Research Centre, Dokki, Cairo, Egypt
| | - Salwa F Hafez
- Environmental & Occupational Medicine Department, Environmental Research Division, National Research Centre, Dokki, Cairo, Egypt
| |
Collapse
|
8
|
Birkett N, Al-Zoughool M, Bird M, Baan RA, Zielinski J, Krewski D. Overview of biological mechanisms of human carcinogens. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART B, CRITICAL REVIEWS 2019; 22:288-359. [PMID: 31631808 DOI: 10.1080/10937404.2019.1643539] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This review summarizes the carcinogenic mechanisms for 109 Group 1 human carcinogens identified as causes of human cancer through Volume 106 of the IARC Monographs. The International Agency for Research on Cancer (IARC) evaluates human, experimental and mechanistic evidence on agents suspected of inducing cancer in humans, using a well-established weight of evidence approach. The monographs provide detailed mechanistic information about all carcinogens. Carcinogens with closely similar mechanisms of action (e.g. agents emitting alpha particles) were combined into groups for the review. A narrative synopsis of the mechanistic profiles for the 86 carcinogens or carcinogen groups is presented, based primarily on information in the IARC monographs, supplemented with a non-systematic review. Most carcinogens included a genotoxic mechanism.
Collapse
Affiliation(s)
- Nicholas Birkett
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Mustafa Al-Zoughool
- Department of Community and Environmental Health, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Michael Bird
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Robert A Baan
- International Agency for Research on Cancer, Lyon, France
| | - Jan Zielinski
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Daniel Krewski
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- McLaughlin Centre for Population Health Risk Assessment, Faculty of Medicine, University of Ottawa, Ottawa, Canada
- Risk Sciences International, Ottawa, Canada
| |
Collapse
|
9
|
Bono R, Capacci F, Cellai F, Sgarrella C, Bellisario V, Trucco G, Tofani L, Peluso A, Poli C, Arena L, Piro S, Miligi L, Munnia A, Peluso M. Wood dust and urinary 15-F 2t isoprostane in Italian industry workers. ENVIRONMENTAL RESEARCH 2019; 173:300-305. [PMID: 30939330 DOI: 10.1016/j.envres.2019.03.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/22/2019] [Accepted: 03/23/2019] [Indexed: 06/09/2023]
Abstract
Wood dust is one of the most common occupational exposures, with about 3.6 million of workers in the wood industry in Europe. Wood particles can deposit in the nose and the respiratory tract and cause adverse health effects. Occupational exposure to wood dust has been associated with malignant tumors of the nasal cavity and paranasal sinuses. The induction of oxidative stress and the generation of reactive oxygen species through activation of inflammatory cells could have a role in the carcinogenicity of respirable wood dust. Therefore, we conducted a cross-sectional study to evaluate the prevalence of urinary 15-F2t isoprostane (15-F2t-IsoP), a biomarker of oxidative stress and peroxidation of lipids, in 123 wood workers compared to 57 unexposed controls living in Tuscany region, Italy. 15-F2t-IsoP generation was measured by ELISA. The main result of the present study showed that a statistically significant excess of this biomarker occurred in the workers exposed to 1.48 mg/m3 of airborne wood dust with respect to the unexposed controls. The overall mean ratio (MR) between the workers exposed to wood dust and the controls was 1.36, 95% Confidence Interval (C.I.) 1.18-1.57, after correction for age and smoking habits. A significant increment of 15-F2t-IsoP (43%) was observed in the smokers as compared to the non-smokers. The urinary excretion of 15-F2t-IsoP was significantly associated with co-exposure to organic solvents, i.e., MR of 1.41, 95% C.I. 1.17-1.70, after adjustment for age and smoking habits. A 41% excess was observed in long-term wood workers, 95% C.I. 1.14-1.75. Multivariate regression analysis showed that the level of 15-F2t-IsoP was linearly correlated to the length of exposure, regression coefficient (β) = 0.244 ± 0.002 (SE). The overall increment by exposure group persisted after stratification for smoking habits. For instance, in smokers, a 53% excess was detected in the wood workers as compared to the controls, 95% C.I. 1.23-1.91. Our data support the hypothesis that oxidative stress and lipid peroxidation can have a role in the toxicity of wood dust F2-IsoP measure can be a tool for the evaluation of the effectiveness of targeted interventions aimed to reduce exposures to environmental carcinogens.
Collapse
Affiliation(s)
- Roberto Bono
- Department of Public Health and Pediatrics, University of Turin, Italy
| | - Fabio Capacci
- Functional Unit for Prevention, Health and Safety in the Workplace, ASL10, Florence, Italy
| | - Filippo Cellai
- Cancer Factor Risk Branch, Regional Cancer Prevention Laboratory, ISPRO-Study, Prevention and Oncology Network Institute, 50139, Florence, Italy
| | - Carla Sgarrella
- Functional Unit for Prevention, Health and Safety in the Workplace, ASL10, Florence, Italy
| | | | - Giulia Trucco
- Department of Public Health and Pediatrics, University of Turin, Italy
| | - Lorenzo Tofani
- Department of Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | | | - Carla Poli
- Department of Prevention, ASL11, Empoli, Florence, Italy
| | - Luciano Arena
- Department of Prevention, ASL11, Empoli, Florence, Italy
| | - Sara Piro
- Unit of Environmental and Occupational Epidemiology, ISPRO-Study, Prevention and Oncology Network Institute, 50139, Florence, Italy
| | - Lucia Miligi
- Unit of Environmental and Occupational Epidemiology, ISPRO-Study, Prevention and Oncology Network Institute, 50139, Florence, Italy
| | - Armelle Munnia
- Cancer Factor Risk Branch, Regional Cancer Prevention Laboratory, ISPRO-Study, Prevention and Oncology Network Institute, 50139, Florence, Italy
| | - Marco Peluso
- Cancer Factor Risk Branch, Regional Cancer Prevention Laboratory, ISPRO-Study, Prevention and Oncology Network Institute, 50139, Florence, Italy.
| |
Collapse
|
10
|
Tan SN, Sim SP, Khoo ASB. Matrix association region/scaffold attachment region (MAR/SAR) sequence: its vital role in mediating chromosome breakages in nasopharyngeal epithelial cells via oxidative stress-induced apoptosis. BMC Mol Biol 2018; 19:15. [PMID: 30514321 PMCID: PMC6278157 DOI: 10.1186/s12867-018-0116-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 11/26/2018] [Indexed: 12/15/2022] Open
Abstract
Background Oxidative stress is known to be involved in most of the aetiological factors of nasopharyngeal carcinoma (NPC). Cells that are under oxidative stress may undergo apoptosis. We have previously demonstrated that oxidative stress-induced apoptosis could be a potential mechanism mediating chromosome breakages in nasopharyngeal epithelial cells. Additionally, caspase-activated DNase (CAD) may be the vital player in mediating the chromosomal breakages during oxidative stress-induced apoptosis. Chromosomal breakage occurs during apoptosis and chromosome rearrangement. Chromosomal breakages tend to cluster in certain regions, such as matrix association region/scaffold attachment region (MAR/SAR). We hypothesised that oxidative stress-induced apoptosis may result in chromosome breaks preferentially at the MAR/SAR sites. The AF9 gene at 9p22 was targeted in this study because 9p22 is a deletion site commonly found in NPC. Results By using MAR/SAR recognition signature (MRS), potential MAR/SAR sites were predicted in the AF9 gene. The predicted MAR/SAR sites precisely match to the experimentally determined MAR/SARs. Hydrogen peroxide (H2O2) was used to induce apoptosis in normal nasopharyngeal epithelial cells (NP69) and NPC cells (HK1). Nested inverse polymerase chain reaction was employed to identify the AF9 gene cleavages. In the SAR region, the gene cleavage frequency of H2O2-treated cells was significantly higher than that of the non-treated cells. A few chromosomal breakages were detected within the AF9 region which was previously found to be involved in the mixed lineage leukaemia (MLL)-AF9 translocation in an acute lymphoblastic leukaemia patient. As for the non-SAR region, no significant difference in the gene cleavage frequency was found between the untreated control and H2O2-treated cells. Furthermore, H2O2-induced cleavages within the SAR region were reduced by caspase-3 inhibitor, which indirectly inhibits CAD. Conclusions These results reaffirm our previous findings that oxidative stress-induced apoptosis could be one of the potential mechanisms underlying chromosome breakages in nasopharyngeal epithelial cells. MAR/SAR may play a vital role in defining the location of chromosomal breakages mediated by oxidative stress-induced apoptosis, where CAD is the major nuclease. Electronic supplementary material The online version of this article (10.1186/s12867-018-0116-5) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Sang-Nee Tan
- Department of Paraclinical Sciences, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia
| | - Sai-Peng Sim
- Department of Paraclinical Sciences, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia.
| | - Alan S B Khoo
- Molecular Pathology Unit, Cancer Research Centre, Institute for Medical Research, Kuala Lumpur, Malaysia
| |
Collapse
|
11
|
Oxidative stress-induced chromosome breaks within the ABL gene: a model for chromosome rearrangement in nasopharyngeal carcinoma. Hum Genomics 2018; 12:29. [PMID: 29914565 PMCID: PMC6006577 DOI: 10.1186/s40246-018-0160-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 05/28/2018] [Indexed: 12/15/2022] Open
Abstract
Background The mechanism underlying chromosome rearrangement in nasopharyngeal carcinoma (NPC) remains elusive. It is known that most of the aetiological factors of NPC trigger oxidative stress. Oxidative stress is a potent apoptotic inducer. During apoptosis, chromatin cleavage and DNA fragmentation occur. However, cells may undergo DNA repair and survive apoptosis. Non-homologous end joining (NHEJ) pathway has been known as the primary DNA repair system in human cells. The NHEJ process may repair DNA ends without any homology, although region of microhomology (a few nucleotides) is usually utilised by this DNA repair system. Cells that evade apoptosis via erroneous DNA repair may carry chromosomal aberration. Apoptotic nuclease was found to be associated with nuclear matrix during apoptosis. Matrix association region/scaffold attachment region (MAR/SAR) is the binding site of the chromosomal DNA loop structure to the nuclear matrix. When apoptotic nuclease is associated with nuclear matrix during apoptosis, it potentially cleaves at MAR/SAR. Cells that survive apoptosis via compromised DNA repair may carry chromosome rearrangement contributing to NPC tumourigenesis. The Abelson murine leukaemia (ABL) gene at 9q34 was targeted in this study as 9q34 is a common region of loss in NPC. This study aimed to identify the chromosome breakages and/or rearrangements in the ABL gene in cells undergoing oxidative stress-induced apoptosis. Results In the present study, in silico prediction of MAR/SAR was performed in the ABL gene. More than 80% of the predicted MAR/SAR sites are closely associated with previously reported patient breakpoint cluster regions (BCR). By using inverse polymerase chain reaction (IPCR), we demonstrated that hydrogen peroxide (H2O2)-induced apoptosis in normal nasopharyngeal epithelial and NPC cells led to chromosomal breakages within the ABL BCR that contains a MAR/SAR. Intriguingly, we detected two translocations in H2O2-treated cells. Region of microhomology was found at the translocation junctions. This observation is consistent with the operation of microhomology-mediated NHEJ. Conclusions Our findings suggested that oxidative stress-induced apoptosis may participate in chromosome rearrangements of NPC. A revised model for oxidative stress-induced apoptosis mediating chromosome rearrangement in NPC is proposed. Electronic supplementary material The online version of this article (10.1186/s40246-018-0160-8) contains supplementary material, which is available to authorized users.
Collapse
|
12
|
Jang J, Jung Y, Chae S, Chung SI, Kim SM, Yoon Y. WNT/β-catenin pathway modulates the TNF-α-induced inflammatory response in bronchial epithelial cells. Biochem Biophys Res Commun 2017; 484:442-449. [PMID: 28137581 DOI: 10.1016/j.bbrc.2017.01.156] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 01/27/2017] [Indexed: 11/30/2022]
Abstract
In this study, TNF-α was found to activate the WNT/β-catenin pathway in BEAS-2B human bronchial epithelial cells. Levels of phospho-LRP6, Dvl-2, and phospho-GSK-3β were elevated, while that of Axin was reduced by TNF-α treatment. Nuclear translocation of β-catenin and the reporter activity of a β-catenin-responsive promoter were increased by TNF-α treatment. Under the same experimental conditions, TNF-α activated the NF-κB signaling, which includes the phosphorylation and degradation of IκB and nuclear translocation and target DNA binding of NF-κB, and it was found that an inhibitor of NF-κB activation, JSH-23, inhibited TNF-α-induced Wnt signaling as well as NF-κB signaling. It was also found that recombinant Wnt proteins induced NF-κB nuclear translocations and its target DNA binding, suggesting that Wnt signaling and NF-κB signaling were inter-connected. TNF-α-induced modulations of IκB and NF-κB as well as pro-inflammatory cytokine expression were significantly suppressed by the transfection of β-catenin siRNA compared to that of control siRNA. Transfection of a β-catenin expression plasmid augmented the TNF-α-induced modulations of IκB and NF-κB as well as pro-inflammatory cytokine expression. These results clearly demonstrated that the WNT/β-catenin pathway modulates the inflammatory response induced by TNF-α, suggesting that this pathway may be a useful target for the effective treatment of bronchial inflammation.
Collapse
Affiliation(s)
- Jaewoong Jang
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Yoonju Jung
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Seyeon Chae
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Sang-In Chung
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Seok-Min Kim
- School of Mechanical Engineering, Chung-Ang University, Seoul 156-756, Republic of Korea
| | - Yoosik Yoon
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea.
| |
Collapse
|
13
|
Jang J, Jung Y, Kim Y, Jho EH, Yoon Y. LPS-induced inflammatory response is suppressed by Wnt inhibitors, Dickkopf-1 and LGK974. Sci Rep 2017; 7:41612. [PMID: 28128299 PMCID: PMC5269682 DOI: 10.1038/srep41612] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 12/21/2016] [Indexed: 12/24/2022] Open
Abstract
In this study, LPS-induced inflammatory responses in BEAS-2B human bronchial epithelial cells and human umbilical vein endothelial cell (HUVEC)s were found to be prevented by Dickkopf-1 (DKK-1), a secreted Wnt antagonist, and LGK974, a small molecular inhibitor of the Wnt secretion. LPS-induced IκB degradation and NF-κB nuclear translocation as well as the expressions of pro-inflammatory genes including IL-6, IL-8, TNF- α, IL-1β, MCP-1, MMP-9, COX-2 and iNOS, were all suppressed by DKK-1 and LGK974 in a dose-dependent manner. The suppressive effects of LGK974 on NF-κB, IκB, and pro-inflammatory gene expression were rescued by ectopic expression of β-catenin, suggesting that the anti-inflammatory activity of LGK974 is mediated by modulation of the Wnt/β-catenin pathway and not by unrelated side effects. When Wnt recombinant proteins were treated to cells, Wnt3a and Wnt5a significantly induced pro-inflammatory gene expressions, while Wnt7a and Wnt10b showed little effects. It was also found that Wnt3a and Wnt5a expressions were significantly induced by LPS treatment. Consistently, knockdown of Wnt3a and Wnt5a blocked LPS-induced inflammatory responses, while treatment of recombinant Wnt3a and Wnt5a proteins rescued the inhibition of inflammatory responses by LGK974. Findings of this study showed that DKK-1 and LGK974 suppress LPS-induced inflammatory response by modulating Wnt/β-catenin pathway.
Collapse
Affiliation(s)
- Jaewoong Jang
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Yoonju Jung
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Youngeun Kim
- Department of Life Science, University of Seoul, Seoul, 130-743, Republic of Korea
| | - Eek-Hoon Jho
- Department of Life Science, University of Seoul, Seoul, 130-743, Republic of Korea
| | - Yoosik Yoon
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| |
Collapse
|
14
|
Tan SN, Sim SP, Khoo ASB. Potential role of oxidative stress-induced apoptosis in mediating chromosomal rearrangements in nasopharyngeal carcinoma. Cell Biosci 2016; 6:35. [PMID: 27231526 PMCID: PMC4880972 DOI: 10.1186/s13578-016-0103-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 05/10/2016] [Indexed: 12/27/2022] Open
Abstract
Background Genetic aberrations have been identified in nasopharyngeal carcinoma (NPC), however, the underlying mechanism remains elusive. There are increasing evidences that the apoptotic nuclease caspase-activated deoxyribonuclease (CAD) is one of the players leading to translocation in leukemia. Oxidative stress, which has been strongly implicated in carcinogenesis, is a potent apoptotic inducer. Most of the NPC etiological factors are known to induce oxidative stress. Although apoptosis is a cell death process, cells possess the potential to survive apoptosis upon DNA repair. Eventually, the surviving cells may carry rearranged chromosomes. We hypothesized that oxidative stress-induced apoptosis may cause chromosomal breaks mediated by CAD. Upon erroneous DNA repair, cells that survive apoptosis may harbor chromosomal rearrangements contributing to NPC pathogenesis. This study focused on the AF9 gene at 9p22, a common deletion region in NPC. We aimed to propose a possible model for molecular mechanism underlying the chromosomal rearrangements in NPC. Results In the present study, we showed that hydrogen peroxide (H2O2) induced apoptosis in NPC (HK1) and normal nasopharyngeal epithelial (NP69) cells, as evaluated by flow cytometric analyses. Activity of caspases 3/7 was detected in H2O2-treated cells. This activity was inhibited by caspase inhibitor (CI). By nested inverse polymerase chain reaction (IPCR), we demonstrated that oxidative stress-induced apoptosis in HK1 and NP69 cells resulted in cleavages within the breakpoint cluster region (BCR) of the AF9 gene. The gene cleavage frequency detected in the H2O2-treated cells was found to be significantly higher than untreated control. We further found that treatment with CI, which indirectly inhibits CAD, significantly reduced the chromosomal breaks in H2O2-cotreated cells. Intriguingly, a few breakpoints were mapped within the AF9 region that was previously reported to translocate with the mixed lineage leukemia (MLL) gene in acute lymphoblastic leukemia (ALL) patient. Conclusions In conclusion, our findings suggested that oxidative stress-induced apoptosis could be one of the mechanisms underlying the chromosomal rearrangements in NPC. CAD may play an important role in chromosomal cleavages mediated by oxidative stress-induced apoptosis. A potential model for oxidative stress-induced apoptosis mediating chromosomal rearrangements in NPC is proposed.
Collapse
Affiliation(s)
- Sang-Nee Tan
- Faculty of Medicine and Health Sciences, Department of Paraclinical Sciences, Universiti Malaysia Sarawak, Sarawak, Malaysia
| | - Sai-Peng Sim
- Faculty of Medicine and Health Sciences, Department of Paraclinical Sciences, Universiti Malaysia Sarawak, Sarawak, Malaysia
| | - Alan S B Khoo
- Molecular Pathology Unit, Cancer Research Centre, Institute for Medical Research, Kuala Lumpur, Malaysia
| |
Collapse
|
15
|
JANG JAEWOONG, KIM WONYONG, KIM KIJEONG, CHUNG SANGIN, SHIM YAEJIE, KIM SEOKMIN, YOON YOOSIK. Lipoteichoic acid upregulates NF-κB and proinflammatory cytokines by modulating β-catenin in bronchial epithelial cells. Mol Med Rep 2015; 12:4720-4726. [DOI: 10.3892/mmr.2015.3965] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 05/15/2015] [Indexed: 11/06/2022] Open
|
16
|
Staffolani S, Manzella N, Strafella E, Nocchi L, Bracci M, Ciarapica V, Amati M, Rubini C, Re M, Pugnaloni A, Pasquini E, Tarchini P, Valentino M, Tomasetti M, Santarelli L. Wood dust exposure induces cell transformation through EGFR-mediated OGG1 inhibition. Mutagenesis 2015; 30:487-97. [PMID: 25711499 DOI: 10.1093/mutage/gev007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A high risk of neoplastic transformation of nasal and paranasal sinuses mucosa is related to the occupational exposure to wood dust. However, the role of occupational exposures in the aetiology of the airway cancers remains largely unknown. Here, an in vitro model was performed to investigate the carcinogenic effect of wood dusts. Human bronchial epithelial cells were incubated with hard and soft wood dusts and the DNA damage and response to DNA damage evaluated. Wood dust exposure induced accumulation of oxidised DNA bases, which was associated with a delay in DNA repair activity. By exposing cells to wood dust at a prolonged time, wood dust-initiated cells were obtained. Initiated-cells were able to form colonies in soft agar, and to induce blood vessel formation. These cells showed extensive autophagy, reduced DNA repair, which was associated with reduced OGG1 expression and oxidised DNA base accumulation. These events were found related to the activation of EGFR/AKT/mTOR pathway, through phosphorylation and subsequent inactivation of tuberin. The persistence in the tissue of wood dusts, their repetitious binding with EGFR may continually trigger the activation switch, leading to chronic down-regulation of genes involved in DNA repair, leading to cell transformation and proliferation.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Massimo Re
- Department of Clinical Sciences, Polytechnic University of Marche, via Tronto, 10A, 60020 Ancona, Italy
| | | | - Ernesto Pasquini
- UOC-ORL Budrio-Metropolitan Hospital Via Benni, 44, Budrio 40054, Bologna, Italy and
| | - Paolo Tarchini
- Department of E.N.T. Polyclinic 'Sant'Orsola Malpighi' Otolaryngology Clinic, University of Bologna Via Pietro Albertoni, 15, 40138, Bologna, Italy
| | | | | | | |
Collapse
|
17
|
Abstract
The sinonasal cavities represent an anatomical region affected by a variety of tumours with clinical, aetiological, pathological, and genetic features distinct from tumours at the main head and neck cancer localizations. Together, squamous-cell carcinoma and adenocarcinoma account for 80% of all sinonasal tumours, and are aetiologically associated with professional exposure to wood and leather dust particles and other industrial compounds, and therefore, are officially recognized as an occupational disease. Owing to their distinctive characteristics, sinonasal tumours should be considered as separate entities, not to be included in the miscellany of head and neck cancers. Sinonasal tumours are rare, with an annual incidence of approximately 1 case per 100,000 inhabitants worldwide, a fact that has hampered molecular-genetic studies of the tumorigenic pathways and the testing of alternative treatment strategies. Nevertheless, the clinical management of sinonasal cancer has improved owing to advances in imaging techniques, endoscopic surgical approaches, and radiotherapy. Genetic profiling and the development of in vitro cell lines and animal models currently form the basis for future targeted anticancer therapies. We review these advances in our understanding and treatment of sinonasal tumours.
Collapse
|
18
|
Jang J, Ha JH, Chung SI, Yoon Y. Β-catenin regulates NF-κB activity and inflammatory cytokine expression in bronchial epithelial cells treated with lipopolysaccharide. Int J Mol Med 2014; 34:632-8. [PMID: 24938929 DOI: 10.3892/ijmm.2014.1807] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 06/10/2014] [Indexed: 11/06/2022] Open
Abstract
In the present study, we demonstrate that lipopolysaccharide (LPS) induces the expression of inflammatory cytokines, including interleukin (IL)-6, IL-8, IL-1β, tumor necrosis factor (TNF)-α and monocyte chemoattractant protein (MCP)-1 in BEAS-2B human bronchial epithelial cells in a dose- and time-dependent manner. This increase was accompanied by an increased activity of nuclear factor (NF)‑κB. When the expression of β-catenin was analyzed following treatment with LPS, the mRNA level was unaltered; however, the β-catenin protein levels increased with a decrease in phosphorylation at the serine 33/37 residues. Nuclear β-catenin protein levels also increased along with the reporter activity of a β-catenin-responsive TOPFlash vector. To elucidate the regulatory role of β-catenin in the LPS-induced inflammatory response of bronchial epithelial cells, β-catenin production was knocked down using siRNA. Our results revealed that β-catenin protein levels and TOPFlash vector reporter activity were reduced to basal levels by siRNA transfection. In this experimental condition, NF-κB activity, measured by enzyme-linked immunosorbent assay (ELISA), electrophoretic mobility shift assay (EMSA) and an NF-κB responsive reporter assay, was reduced to basal levels. Similarly, LPS-induced inflammatory cytokine expression was reduced almost to basal levels following transfection with β-catenin siRNA. These results demonstrate that β-catenin positively regulates NF-κB activity, as well as the expression of inflammatory cytokines in the inflammatory response of LPS-treated bronchial epithelial cells.
Collapse
Affiliation(s)
- Jaewoong Jang
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Jong-Hyeok Ha
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Sang-In Chung
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| | - Yoosik Yoon
- Department of Microbiology, Chung-Ang University College of Medicine, Seoul 156-756, Republic of Korea
| |
Collapse
|
19
|
Reactive oxygen species induce apoptosis in bronchial epithelial BEAS-2B cells by inhibiting the antiglycation glyoxalase I defence: involvement of superoxide anion, hydrogen peroxide and NF-κB. Apoptosis 2013; 19:102-16. [DOI: 10.1007/s10495-013-0902-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
20
|
Lan X, Feng L, Liu Y, Zhou Y, Shao L, Pang W, Lan Y, Wang C. In vitrostudy of injury on human bronchial epithelial cells caused by gunpowder smog. Inhal Toxicol 2013; 25:118-25. [DOI: 10.3109/08958378.2012.761301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
21
|
Kovacic P, Somanathan R. Broad overview of oxidative stress and its complications in human health. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojpm.2013.31005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
22
|
Pérez-Escuredo J, Martínez JG, Vivanco B, Marcos CÁ, Suárez C, Llorente JL, Hermsen MA. Wood dust–related mutational profile of TP53 in intestinal-type sinonasal adenocarcinoma. Hum Pathol 2012; 43:1894-901. [DOI: 10.1016/j.humpath.2012.01.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 01/26/2012] [Accepted: 01/27/2012] [Indexed: 10/28/2022]
|
23
|
Mazzoli A, Favoni O. Particle size, size distribution and morphological evaluation of airborne dust particles of diverse woods by Scanning Electron Microscopy and image processing program. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.03.033] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
24
|
Ravichandran P, Baluchamy S, Sadanandan B, Gopikrishnan R, Biradar S, Ramesh V, Hall JC, Ramesh GT. Multiwalled carbon nanotubes activate NF-κB and AP-1 signaling pathways to induce apoptosis in rat lung epithelial cells. Apoptosis 2011; 15:1507-16. [PMID: 20694747 DOI: 10.1007/s10495-010-0532-6] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Our previous report on multiwall carbon nanotubes (MWCNT) has demonstrated the generation of reactive radicals and depletion of intracellular antioxidants which in turn cause cell death through activation of caspases. The molecular mechanism of cellular death due to MWCNT is not clear yet. In this study, we investigated the signaling pathways implicated in MWCNT-induced apoptosis in rat lung epithelial cells. First, we assessed the DNA damage in response to MWCNT treatment and showed the significant DNA damage as compared to control. The collapse of the mitochondrial membrane integrity, release of cytochrome c into the cytosol, reduction in cellular ATP content, increased levels of mitochondrial apoptogenic factor and activation and nuclear translocation of NF-κB were observed in MWCNT treated cells. In addition, a time-dependent induction of phosphorylated IκBα and its degradation were detected in cells exposed to MWCNT. Furthermore, MWCNT activated several death related proteins including apoptosis inducing factor, p53, p21 and bax. Together, our results suggest that signaling pathways such as NF-κB and AP-1 are activated upon MWCNT treatment for cellular cytotoxicity.
Collapse
Affiliation(s)
- Prabakaran Ravichandran
- Molecular Toxicology Laboratory, Center for Biotechnology and Biomedical Sciences, Department of Biology, Norfolk State University, Norfolk, VA 23504, USA
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Bhatti P, Newcomer L, Onstad L, Teschke K, Camp J, Morgan M, Vaughan TL. Wood dust exposure and risk of lung cancer. Occup Environ Med 2010; 68:599-604. [PMID: 21071755 DOI: 10.1136/oem.2010.060004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES Despite the compelling association between wood dust and sinonasal cancer, there has been little systematic and rigorous study of the relationship between wood dust and lung cancer. We investigated whether a history of wood dust exposure through occupational and hobby-related activities was associated with increased lung cancer risk. METHODS We conducted a population-based case-control study, with 440 cases and 845 age-matched controls. Using detailed work and personal histories, quantitative estimates of cumulative exposure to wood dust (thought to be primarily from softwood) were calculated for each participant. Using unconditional logistic regression adjusted for age and smoking status, risk of lung cancer was examined in relation to employment in wood-related occupations, working with wood as a hobby, as well as cumulative wood dust exposure that took into account both occupational and hobby-related sources. RESULTS While we observed an increased risk of lung cancer associated with working in a sawmill (OR=1.5; 95% CI: 1.1, 2.1), we found no evidence of increased risks with other occupations, working with wood as a hobby or with estimated cumulative exposure to wood dust. Contrary to our hypothesis, we observed modest decreased risks with exposure to wood dust, although no dose-response relationship was apparent. CONCLUSIONS This study provided somewhat reassuring evidence that softwood dust does not increase the risk of lung cancer, but future studies should evaluate exposure to hardwood dusts. Suggestive evidence for an inverse association may be attributable to the presence of endotoxin in the wood dust, but the lack of a dose-response relationship suggests a non-causal relationship.
Collapse
Affiliation(s)
- Parveen Bhatti
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA.
| | | | | | | | | | | | | |
Collapse
|
26
|
Lu TH, Chen CH, Lee MJ, Ho TJ, Leung YM, Hung DZ, Yen CC, He TY, Chen YW. Methylmercury chloride induces alveolar type II epithelial cell damage through an oxidative stress-related mitochondrial cell death pathway. Toxicol Lett 2010; 194:70-8. [PMID: 20153410 DOI: 10.1016/j.toxlet.2010.02.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Revised: 02/03/2010] [Accepted: 02/04/2010] [Indexed: 11/16/2022]
Abstract
Mercury, one of the widespread pollutants in the world, induces oxidative stress and dysfunction in many cell types. Alveolar type II epithelial cells are known to be vulnerable to oxidative stress. Alveolar type II epithelial cells produce and secrete surfactants to maintain morphological organization, biophysical functions, biochemical composition, and immunity in lung tissues. However, the precise action and mechanism of mercury on alveolar type II epithelial cell damage remains unclear. In this study, we investigate the effect and possible mechanism of methylmercury chloride (MeHgCl) on the human lung invasive carcinoma cell line (Cl1-0) and mouse lung tissue. Cl1-0 cells were exposed to MeHgCl (2.5-10 microM) for 24-72 h. The results showed a decrease in cell viability and an increase in malondialdehyde (MDA) level and ROS production at 72 h after MeHgCl exposure in a dose-dependent manner. Caspase-3 activity, sub-G1 contents and annexin-V binding were dramatically enhanced in Cl1-0 cells treated with MeHgCl. MeHgCl could also activate Bax, release cytochrome c, and cleave poly(ADP-Ribose) polymerase (PARP), and decrease surfactant proteins mRNA levels. Moreover, in vivo study showed that mercury contents of blood and lung tissues were significantly increased after MeHgCl treatment in mice. The MDA levels in plasma and lung tissues were also dramatically raised after MeHgCl treatment. Lung tissue sections of MeHgCl-treated mice showed pathological fibrosis as compared with vehicle control. The mRNA levels of proteins in apoptotic signaling, including p53, mdm-2, Bax, Bad, and caspase-3 were increased in mice after exposure to MeHgCl. In addition, the mRNA levels of surfactant proteins (SPs), namely, SP-A, SP-B, SP-C, and SP-D (alveolar epithelial cell functional markers) were significantly decreased. These results suggest that MeHgCl activates an oxidative stress-induced mitochondrial cell death in alveolar epithelial cells.
Collapse
Affiliation(s)
- Tien Hui Lu
- Department of Nutrition, College of Health Care, China Medical University, Taichung, Taiwan
| | | | | | | | | | | | | | | | | |
Collapse
|