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Pulmonary function and airway inflammation among dairy parlor workers after exposure to inhalable aerosols
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Published Date:
Mar 2017
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Source:Am J Ind Med. 60(3):255-263
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Language:English
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Details:
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Alternative Title:Am J Ind Med
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Description:Background Inhalation exposure to organic dust causes lung inflammation among agricultural workers. Due to changes in production and work organization, task-based inhalation exposure data, including novel lung inflammation biomarkers, will inform exposure recommendations for dairy farm workers. Methods Linear regression was used to estimate the associations of airborne exposure to dust concentration, endotoxin, and muramic acid with pulmonary outcomes (i.e., FEV1, exhaled nitric oxide). Logistic regression was used to estimate associations with self-reported pulmonary symptoms. Results Mean exposure concentration to inhalable dust, endotoxin, and muramic acid were 0.55 mg/m3, 118 EU/m3, and 3.6 mg/m3, respectively. We found cross-shift differences for exhaled nitric oxide (P = 0.005) and self-reported pulmonary symptoms (P = 0.008) but no association of exposure with respiratory outcomes. Conclusions Inhalation exposures during parlor tasks, which were lower than previously reported and were not associated with cross-shift measures of pulmonary health among dairy workers. Modern milking parlor designs may be contributing to lower inhalation exposure. Am. J. Ind. Med. 60:255–263, 2017.
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Subject:
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Pubmed ID:28195657
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Pubmed Central ID:PMC7082837
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