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Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran

OBJECTIVES: The possible adverse respiratory effects of airborne pollutants in sawmills have not been thoroughly investigated in Iran. Additionally, the extent to which workers are exposed to this organic dust and its associated bioaerosols has not been extensively quantified. Likewise, the predomin...

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Autores principales: Neghab, Masoud, Jabari, Zeinab, Kargar Shouroki, Fatemeh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Society of Epidemiology 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6186864/
https://www.ncbi.nlm.nih.gov/pubmed/30056642
http://dx.doi.org/10.4178/epih.e2018031
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author Neghab, Masoud
Jabari, Zeinab
Kargar Shouroki, Fatemeh
author_facet Neghab, Masoud
Jabari, Zeinab
Kargar Shouroki, Fatemeh
author_sort Neghab, Masoud
collection PubMed
description OBJECTIVES: The possible adverse respiratory effects of airborne pollutants in sawmills have not been thoroughly investigated in Iran. Additionally, the extent to which workers are exposed to this organic dust and its associated bioaerosols has not been extensively quantified. Likewise, the predominant bacterial and fungal species associated with wood dust have not been characterized. The present study was undertaken to address these issues. METHODS: One hundred male individuals exposed to wood dust and 100 unexposed male subjects were investigated. They completed a standardized respiratory symptom questionnaire and underwent spirometry testing. Additionally, airborne concentrations of respirable and inhalable dust particles, bacteria, and fungi were measured. RESULTS: The mean concentrations of inhalable and respirable dust particles, bacteria, and fungi were found to be 2.44, 6.76 mg/m(3) , 756.38, and 299.15 colony-forming units/m(3) , respectively. The predominant Gram-negative bacteria in the sawmills included the Pseudomonadaceae, Klebsiella pneumoniae, and Rhinoscleromatis spp., and the predominant fungi consisted of the zygomycetes and Aspergillus spp. Respiratory symptoms were significantly more prevalent among exposed workers. Significant cross-shift decrements were noted in some pulmonary function parameters. Similarly, pre-shift spirometry results indicated that some pulmonary function parameters were significantly lower in the exposed group. CONCLUSIONS: Exposure to wood dust and its bioaerosols was associated with significantly higher prevalence of respiratory symptoms and both acute (i.e., partially reversible) and chronic (i.e., irreversible) decrements in the functional capacity of the lung. Additionally, the characterized bioaerosols did not differ significantly from those isolated in other parts of the world.
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spelling pubmed-61868642018-10-23 Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran Neghab, Masoud Jabari, Zeinab Kargar Shouroki, Fatemeh Epidemiol Health Original Article OBJECTIVES: The possible adverse respiratory effects of airborne pollutants in sawmills have not been thoroughly investigated in Iran. Additionally, the extent to which workers are exposed to this organic dust and its associated bioaerosols has not been extensively quantified. Likewise, the predominant bacterial and fungal species associated with wood dust have not been characterized. The present study was undertaken to address these issues. METHODS: One hundred male individuals exposed to wood dust and 100 unexposed male subjects were investigated. They completed a standardized respiratory symptom questionnaire and underwent spirometry testing. Additionally, airborne concentrations of respirable and inhalable dust particles, bacteria, and fungi were measured. RESULTS: The mean concentrations of inhalable and respirable dust particles, bacteria, and fungi were found to be 2.44, 6.76 mg/m(3) , 756.38, and 299.15 colony-forming units/m(3) , respectively. The predominant Gram-negative bacteria in the sawmills included the Pseudomonadaceae, Klebsiella pneumoniae, and Rhinoscleromatis spp., and the predominant fungi consisted of the zygomycetes and Aspergillus spp. Respiratory symptoms were significantly more prevalent among exposed workers. Significant cross-shift decrements were noted in some pulmonary function parameters. Similarly, pre-shift spirometry results indicated that some pulmonary function parameters were significantly lower in the exposed group. CONCLUSIONS: Exposure to wood dust and its bioaerosols was associated with significantly higher prevalence of respiratory symptoms and both acute (i.e., partially reversible) and chronic (i.e., irreversible) decrements in the functional capacity of the lung. Additionally, the characterized bioaerosols did not differ significantly from those isolated in other parts of the world. Korean Society of Epidemiology 2018-07-04 /pmc/articles/PMC6186864/ /pubmed/30056642 http://dx.doi.org/10.4178/epih.e2018031 Text en ©2018, Korean Society of Epidemiology This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Neghab, Masoud
Jabari, Zeinab
Kargar Shouroki, Fatemeh
Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran
title Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran
title_full Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran
title_fullStr Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran
title_full_unstemmed Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran
title_short Functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in Iran
title_sort functional disorders of the lung and symptoms of respiratory disease associated with occupational inhalation exposure to wood dust in iran
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6186864/
https://www.ncbi.nlm.nih.gov/pubmed/30056642
http://dx.doi.org/10.4178/epih.e2018031
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