Effects of bioaerosol exposure on work-related symptoms among Swiss sawmill workers

Rusca, Sophie; Charrière, Nicole; Droz, Pierre‐Olivier; Oppliger, Anne

doi:10.1007/s00420-007-0228-6

Cited by 39 publications

(30 citation statements)

References 36 publications

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“…In order to gain an understanding of the magnitude of these problems, research has been done measuring the levels of fungi as well as other microorganisms and -particles in workplaces such as farms (Radon et al 2002) and sawmills (Rusca et al 2008). Most occupational environment research, however, has focused on sampling indoor workplaces with a few outdoor samples for reference.…”

Section: Introductionmentioning

confidence: 99%

Exposure to airborne microorganisms, hyphal fragments, and pollen in a field of organically grown strawberries

Tendal

Madsen

2010

Aerobiologia

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Many working environments are predisposed for larger than average amounts of fungi and other microorganisms often due to organic material being handled. From 2003 to 2007, the area used for strawberry production in Denmark increased by 62%. The purpose of this study was to determine the levels of exposure to microorganisms, endotoxin, (1?3)-b-D-glucan (b-glucan), and pollen in a field of strawberries. The study was carried out in eastern Denmark from the middle of June to the beginning of August 2008. The strawberries were grown organically, and microbiological pest control agents (MPCAs) were applied during this and former growth seasons. In order to measure exposure to inhalable bioaerosol components, we used stationary filter samplers. Bioaerosol sampling was performed during 4 working days, and a total of 57 samplings were performed. The filters were analysed for contents of fungi, MPCAs, endotoxin, b-glucan, and pollen. The mean exposure was 6,154 CFU Cladosporium sp. m -3 , 1.0 9 10 5 fungal spores m -3 , 4.1 9 10 4 hyphal fragments m -3 , 5.8 9 10 3 pollen m -3 , 57.3 ng b-glucan m -3 , and 8.9 endotoxin units (EU) m -3 . A significant and positive correlation was found between b-glucan and fungal spores and between CFU of Cladosporium sp. and CFU of fungi. We selected specifically for Metarhizium anisopliae, Beauveria bassiana, and the applied MPCAs Trichoderma harzianum, T. polysporum, and Bacillus thuringiensis but found none of these species. In conclusion, our study shows that berry pickers in this organic strawberry field were potentially subjected to higher levels of fungal spores, Cladosporium sp., hyphal fragments, pollen, and thus also b-glucan than is usually seen in outdoor air. Exposure to MPCAs was not seen. The exposure to endotoxin was only slightly higher than e.g. in a town.

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Section: Introductionmentioning

confidence: 99%

Exposure to airborne microorganisms, hyphal fragments, and pollen in a field of organically grown strawberries

Tendal

Madsen

2010

Aerobiologia

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“…Most species of the fungi spores found in the coal mine air samples and on organic material, such as timber safety structures built in the galleries, can produce mycotoxins that can cause different diseases when introduced into the human body (Rusca et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Airborne bacteria and fungi in a coal mine in Poland

Rdzanek¹,

Pusz²,

Gębarowska³

et al. 2015

JCKS

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We determined the species composition and the concentration of colony forming units of airborne bacteria and fungi in a coal mine in Poland. We sampled at six locations in a working shaft at about 500-600 m below ground level. Air samples were collected between 6 and 9 a.m. using the impact method onto Potato Dextrose Agar and TSA. The volume of air filtered for each coalmine sample was 50 L. We found 11 fungal species, with Penicillium meleagrinum and P. notatum as the most common. Six bacterial genera were identified, with Micrococcus spp. as the most common. There were no pathogenic fungi or bacteria identified. The concentration of fungal spores and bacteria in the coal mine air is not a direct hazard to mine workers.

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“…Although bacterial communities and endotoxin concentrations have been reported in several studies (Gorny and Dutkiewicz 2002;Park et al, 2002;Herr et al, 2003;Oppliger et al, 2005;Rusca et al, 2008;Tendal and Madsen, 2011), only a few studies have evaluated their relationships with the types of land use (Mueller-Anneling et al, 2004;Madsen, 2006;Bowers et al, 2010;Tager et al, 2010;Woo et al, 2013). In a study designed to investigate the risk factors of childhood asthma, air samples were collected from several locations throughout Fresno, a city in central California, USA; the study revealed that the endotoxin concentrations varied among various geographical regions.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Distributions and Land-Use Regression Models of Ambient Bacteria and Endotoxins in the Greater Taipei Area

Kallawicha

Lung

Chuang

et al. 2015

Aerosol Air Qual. Res.

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Ambient bacteria and endotoxins are components of bioaerosols, which are abundant in ambient air. Exposure to ambient bacteria and endotoxins has been associated with respiratory symptoms. We monitored the spatiotemporal distributions of ambient bioaerosols in the Greater Taipei area by using multisite sampling and developed regression models for ambient bacterial and endotoxin concentrations. Forty-four representative sampling sites were selected from the Greater Taipei area. Samples were collected in 4 seasons throughout a 1-y study period. Ambient bacteria were quantified using acridine orange staining, and endotoxins were analyzed using Limulus amebocyte lysate assays. Land-use types and major determinants of the bioaerosols were used to develop regression models. Ambient bacteria ranged from < limit of detection (LOD) to 1.68 × 10 5 cells/m 3 , whereas endotoxins ranged from < LOD to 20.62 EU/m 3 . Significant seasonal variations were observed for both bioaerosols, with the highest concentrations observed in spring. Regression analyses revealed temperature, relative humidity, and particulate matter as the major predictors of ambient bacteria and endotoxins. No land-use type was correlated with any of the bioaerosols. The number of schools and gas stations was positively associated with both bioaerosols. The leave-one-out cross-validation R 2 of the final models for ambient bacteria and endotoxins were 0.11 and 0.31, respectively. The results of this study revealed high spatiotemporal variations in the distributions of ambient bacteria and endotoxins in the Greater Taipei area. Additional potential predictors should be included in future studies to develop better predictive models for ambient bacteria and endotoxins.

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Effects of bioaerosol exposure on work-related symptoms among Swiss sawmill workers

Cited by 39 publications

References 36 publications

Exposure to airborne microorganisms, hyphal fragments, and pollen in a field of organically grown strawberries

Exposure to airborne microorganisms, hyphal fragments, and pollen in a field of organically grown strawberries

Airborne bacteria and fungi in a coal mine in Poland

Spatiotemporal Distributions and Land-Use Regression Models of Ambient Bacteria and Endotoxins in the Greater Taipei Area

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