A cohort study of cucumber greenhouse workers’ exposure to microorganisms as measured using NGS and MALDI-TOF MS and biomarkers of systemic inflammation

Madsen, Anne Mette; White, John Kerr; Markouch, Amal; Kadhim, Sarah; Jonge, Nadieh de; Thilsing, Trine; Hansen, Vinni Mona; Bælum, Jesper; Nielsen, Jeppe Lund; Vogel, Ulla; Tendal, Kira

doi:10.1016/j.envres.2020.110325

Cited by 14 publications

(9 citation statements)

References 69 publications

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“…The bacteria found in high concentrations, P. yeei, B. megatarium, and M. luteus, have previously been found on indoor surfaces (32,33), but also as airborne bacteria in totally other environments such as wastewater treatment plants (34), pigeon coops (35), and on workers' clothes (36). We have found many different Bacillus species and a high species richness of Bacillus has also been found in air samples from different occupational settings (35,37) as well as on indoor surfaces (32). When considering the bacteria at the genus level the genera Kocuria, Micrococcus, Bacillus, and Paenibacillus were among the dominating, and these genera were also dominating in indoor air in Hong Kong and China (reviewed in (20)).…”

Section: Discussionsupporting

confidence: 64%

Airborne bacterial species in indoor air and association with physical factors

Madsen

Moslehi-Jenabian

Frankel

et al. 2023

Preprint

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The aim of this study is to obtain knowledge about which cultivable bacterial species are present in indoor air in homes, and whether the concentration and species composition of airborne bacteria is associated with different factors. Measurements have been performed for one whole year inside different rooms in 5 homes and once in 52 homes. Within homes, a room-to-room variation for concentrations of airborne bacteria was found, but an overlap in bacterial species was found across rooms. Eleven species were found very commonly and included: Acinetobacter lowffii, Bacillus megaterium, B. pumilus, Kocuria carniphila, K. palustris, K. rhizophila, Micrococcus flavus, M. luteus, Moraxella osloensis, and Paracoccus yeei. The concentrations of gram-negative bacteria in general and the species P. yeei were significantly associated with the season with highest concentrations in spring. The concentrations of P. yeei, K. rhizophila, and B. pumilus were associated positively with relative humidity, and concentrations of K. rhizophila were associated negatively with temperature and air change rate. Micrococcus flavus concentrations were associated negatively with air change rate. Overall, this study identified species which are commonly present in indoor air in homes, and that the concentrations of some species were associated with the factors: season, air change rate, and relative humidity.

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Section: Discussionsupporting

confidence: 64%

Airborne bacterial species in indoor air and association with physical factors

Madsen

Moslehi-Jenabian

Frankel

et al. 2023

Preprint

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“…Next to IgE-mediated pathomechanisms, mold exposure can also induce inflammatory health effects. Useful markers to monitor pro-inflammatory and anti-inflammatory effects as early sings of lung damage after dust/microbial exposure were investigated recently [ 16 , 17 , 18 , 19 ]. Human bronchial epithelial cell line exposed to spores and hyphal fragment from different fungal cultures showed that Aspergillus fumigatus and Pencillium chrysogenum hyphae in particular induce the expression and release of interleukin (IL) 6 and chemokine IL-8 [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…Human bronchial epithelial cell line exposed to spores and hyphal fragment from different fungal cultures showed that Aspergillus fumigatus and Pencillium chrysogenum hyphae in particular induce the expression and release of interleukin (IL) 6 and chemokine IL-8 [ 16 ]. In another recent study, an association was found between serum amyloid A (SAA) and C-reactive protein (CRP) levels after occupational exposures to various fungi and bacterial genera in greenhouse workers [ 17 ]. Both the composition of the fungal and bacterial organisms and the level of exposure affected the serological levels of SAA and CRP in exposed workers.…”

Section: Introductionmentioning

confidence: 99%

What should be tested in patients with suspected mold exposure? Usefulness of serological markers for the diagnosis

Kespohl¹,

Liebers²,

Maryska³

et al. 2022

ALS

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“…It is incredibly conducive to the growth of airborne fungi [2]. Thus, working in greenhouses is easily exposed to high levels of airborne fungi [3], which are associated with respiratory symptoms [4], including rhinitis [5], allergy [6], and asthma [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of ventilation on airborne fungi in greenhouses: A case study of tomato greenhouses

Xiong

Zhang

et al. 2022

E3S Web Conf.

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With the rapid development of greenhouses, the indoor air quality, particularly airborne microorganisms, is closely related to the health of farmers and needs more attention. In this study, the concentrations of airborne fungi at seedling, fruiting and harvesting stages in typical tomatoes greenhouses were tested. Temperature, relative humidity and the microbial concentrations were analysed. It was found that the dominant fungal genera are Aspergillus and Cladosporium, no matter it was in which growth stage. Ventilation is an effective way to reduce the concentrations of airborne fungi through dilution and decrease the relative humidity.

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A cohort study of cucumber greenhouse workers’ exposure to microorganisms as measured using NGS and MALDI-TOF MS and biomarkers of systemic inflammation

Cited by 14 publications

References 69 publications

Airborne bacterial species in indoor air and association with physical factors

Airborne bacterial species in indoor air and association with physical factors

What should be tested in patients with suspected mold exposure? Usefulness of serological markers for the diagnosis

Influence of ventilation on airborne fungi in greenhouses: A case study of tomato greenhouses

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