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Burnt sugarcane harvesting is associated with rhinitis symptoms and inflammatory markers.
- Source :
-
Brazilian journal of otorhinolaryngology [Braz J Otorhinolaryngol] 2019 May - Jun; Vol. 85 (3), pp. 337-343. Date of Electronic Publication: 2018 Apr 05. - Publication Year :
- 2019
-
Abstract
- Introduction: Burnt sugarcane harvesting requires intense physical exertion in an environment of high temperature and exposure to particulate matter.<br />Objective: To evaluate the effects of burnt sugarcane harvesting on rhinitis symptoms and inflammatory markers in sugarcane workers.<br />Methods: A total of 32 male sugarcane workers were evaluated with questionnaire for rhinitis symptoms, and for inflammatory markers on peripheral blood and nasal lavage, in the non-harvesting, and 3 and 6 months into the sugarcane harvesting period. Weather data and particulate matter fine concentrations were measured in the same day.<br />Results: The particulate matter concentrations in sugarcane harvesting were 27 (23-33μg/m <superscript>3</superscript> ), 112 (96-122μg/m <superscript>3</superscript> ), and 63 (17-263μg/m <superscript>3</superscript> ); 24h temperatures were 32.6 (25.4-37.4°C), 32.3 (26.7-36.7°C) and 29.7 (24.1-34.0°C) and relative humidities were 45.4 (35.0-59.7%), 47.9 (39.1-63.0%), and 59.9 (34.7-63.2%) in the non-harvesting period, three and 6 months of the harvesting period. The age was 37.4±10.9 years. The prevalence of rhinitis symptoms was significantly higher at 3 months of the harvesting period (53.4%), compared to non-harvesting period (26.7%; p=0.039) and at 6 months into the harvesting period (20%; p=0.006). Concentrations of interleukin 6 (IL-6) in nasal lavage increased after 3 months of the harvesting period compared to the non-harvesting period (p=0.012). The presence of rhinitis symptoms, after 3 months of the harvesting period, was directly associated with blood eosinophils and inversely associated with neutrophils.<br />Conclusions: After 3 months of work in burnt sugarcane harvesting the prevalence of rhinitis symptoms and IL-6 in nasal lavage increased. Furthermore, eosinophil counts were directly associated with the rhinitis symptoms in the period of higher concentration of particulate matter.<br /> (Copyright © 2018 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1808-8686
- Volume :
- 85
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Brazilian journal of otorhinolaryngology
- Publication Type :
- Academic Journal
- Accession number :
- 29661675
- Full Text :
- https://doi.org/10.1016/j.bjorl.2018.02.008