Indoor air quality and dustborne biocontaminants in bedrooms of toddlers in Athens, Greece

Stamatelopoulou, Asimina; Pyrri, Ioanna; Asimakopoulos, D. N.

doi:10.1016/j.buildenv.2020.106756

Cited by 29 publications

(23 citation statements)

References 52 publications

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“…Aspergillus, Cladoporium, Penicillium, Coprinus, Curvularia, as well as Aspergillus/Penicillium, Xylariaceae, and Periconia were detected in most of the houses analyzed in the present investigation. This result contrasts with other studies that refer only to the prevalence of Aspergillus, Cladoporium, Penicillium or Aspergillus/Penicillum (Niemeier et al 2006;Shinohara et al 2018;Stamatelopoulou et al 2020). In this study, the presence of eighteen genera and three spore types in house dust is reported for the rst time in Cuba (Cercospora, Coprinus, Corynespora, Ganoderma, Helminthosporium, Lasiodiplodia, Leptosphaeria, Leptosphaerulina, Dydimosphaeria, Massarina, Monodictys, Paraphaeosphaeria, Pestalotiopsis, Pleospora, Spegazzinia, Stachybotris, Tetraploa, Venturia, spore types Bipolaris/Dreschlera, Sporidesmium, and Xylariaceae,).This result is a contribution to the knowledge about fungal diversity within homes in this neotropical country.…”

Section: Discussioncontrasting

confidence: 92%

“…The detection of these fungal propagules in the residences of children with a family history of asthma is important because several authors have shown that the reduction in exposure to fungal allergens in childhood can prevent sensitization in the allergic child, the development of asthma and other respiratory diseases (Abdo Rodriguez and Cué Brugueras 2006;Hu et al 2017). Knowledge about the factors associated with fungal dust propagules in bedroom contributes to designing interventions in order to reduce exposure to indoor allergens controlling allergic diseases from childhood, particularly asthma (Stamatelopoulou et al 2020).…”

Section: Discussionmentioning

confidence: 99%

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Fungal populations in the bedroom dust of children in Havana, Cuba, and its relationship with environmental conditions

Espinosa

Flores

Davydenko

et al. 2021

Environ Sci Pollut Res

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The study of the fungal community composition in house dust is useful to assess the cumulative exposure to fungi in indoor environments. The objective of this research was to characterize the fungal diversity of house dust and its association with the environmental conditions of bedrooms. For this, the dust was collected from 41 bedrooms of children between the ages of 8 and 9 with a family history of asthma, residents of Havana, Cuba. The fungal content of each sample was determined by two methods: plate culture with Malt Extract Agar and by direct microscopy. An ecological analysis was carried out from the fungal diversity detected. To describe the factors associated with the fungi detected, bivariate logistic regression was used. Through direct microscopy, between 10-2311 fragments of hyphae and spores corresponding mainly to Cladosporium, Coprinus, Curvularia, Aspergillus/Penicillium, Xylariaceae, and Periconia were identi ed. Through the culture, 0-208 CFU were quanti ed, where Aspergillus, Cladosporium, and Penicillium predominated. The culturability evidenced the differences between the quanti cation determined by both methods. A positive relationship was found between the type of cleaning of the furniture, the presence of trees in front of the bedroom, indoor relative humidity, indoor temperature, the presence of air conditioning by air conditioning and natural ventilation with speci c spore types and genders. The use of two different identi cation methods allowed to detect a greater fungal diversity in the residences evaluated. Monitoring the exposure to these fungal allergens in childhood can help to prevent sensitization in the allergic child, the development of asthma and other respiratory diseases.

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Section: Discussioncontrasting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Fungal populations in the bedroom dust of children in Havana, Cuba, and its relationship with environmental conditions

Espinosa

Flores

Davydenko

et al. 2021

Environ Sci Pollut Res

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“…They are primarily outdoor fungal taxa with melanized cell walls, commonly colonizing plant tissues [ 75 ], which are likely to have settled in dust in the analyzed building from outdoor air. However, previous studies suggested that Cladosporium fungal presence in the indoor environments could be influenced by CO 2 concentration and number of occupants [ 76 , 77 ]. It is possible that the aforementioned parameters, not measured in our work, played a role in sustaining the presence of Cladosporium in the studied Tianjin University building through internal sources.…”

Section: Discussionmentioning

confidence: 99%

Environmental Factors Affecting Diversity, Structure, and Temporal Variation of Airborne Fungal Communities in a Research and Teaching Building of Tianjin University, China

Wang

Almeida

et al. 2022

JoF

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Airborne fungi are widely distributed in the environment and may have adverse effects on human health. A 12-month survey on the diversity and concentration of culturable airborne fungi was carried out in a research and teaching building of Tianjin University. Indoor and outdoor environments were analyzed using an HAS-100B air sampler. A total of 667 fungal strains, belonging to 160 species and 73 genera were isolated and identified based on morphological and molecular analysis. The most abundant fungal genera were Alternaria (38.57%), Cladosporium (21.49%), and Aspergillus (5.34%), while the most frequently appearing species was A. alternata (21%), followed by A. tenuissima (12.4%), and C. cladosporioides (9.3%). The concentration of fungi in different environments ranged from 0 to 150 CFU/m3 and was significantly higher outdoor than indoor. Temperature and sampling month were significant factors influencing the whole building fungal community, while relative humidity and wind speed were highly correlated with fungal composition outdoor. Variations in the relative abundance of major airborne fungal taxa at different heights above-ground could lead to different community structures at different floors. Our results may provide valuable information for air quality monitoring and microbial pollution control in university building environments.

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“…Thus, although some researchers argue that active sampling methods (air pumping) represent a better surrogate of exposure, numerous advantages can be pointed out to passive sampling methods. Indeed, active air sampling is limited by short sampling periods (minutes to hours), representing only a snapshot of bioburden exposure [18]. Electrostatic dust collectors (EDCs) constitute a simple and cost-effective passive sampling method able to characterize bioburden present in settleable dust [3,4,[19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Loading Rates of Dust and Bioburden in Dwellings in an Inland City of Southern Europe

et al. 2021

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Sampling campaigns indoors have shown that occupants exposed to contaminated air generally exhibit diverse health outcomes. This study intends to assess the deposition rates of total settleable dust and bioburden in the indoor air of dwellings onto quartz fiber filters and electrostatic dust collectors (EDCs), respectively. EDC extracts were inoculated onto malt extract agar (MEA) and dichloran glycerol (DG18) agar-based media used for fungal contamination characterization, while tryptic soy agar (TSA) was applied for total bacteria assessment, and violet red bile agar (VRBA) for Gram-negative bacteria. Azole-resistance screening and molecular detection by qPCR was also performed. Dust loading rates ranged from 0.111 to 3.52, averaging 0.675 μg cm−2 day−1. Bacterial counts ranged from undetectable to 16.3 colony-forming units (CFU) m−2 day−1 and to 2.95 CFU m−2 day−1 in TSA and VRBA, respectively. Fungal contamination ranged from 1.97 to 35.4 CFU m−2 day−1 in MEA, and from undetectable to 48.8 CFU m−2 day−1 in DG18. Penicillium sp. presented the highest prevalence in MEA media (36.2%) and Cladosporium sp. in DG18 (39.2%). It was possible to observe: (a) settleable dust loadings and fungal contamination higher in dwellings with pets; (b) fungal species considered indicators of harmful fungal contamination; (c) Aspergillus section Candidi identified in supplemented media with voriconazole and posaconazole; (d) specific housing typologies and (e) specific housing characteristics influencing the microbial contamination.

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Indoor air quality and dustborne biocontaminants in bedrooms of toddlers in Athens, Greece

Cited by 29 publications

References 52 publications

Fungal populations in the bedroom dust of children in Havana, Cuba, and its relationship with environmental conditions

Fungal populations in the bedroom dust of children in Havana, Cuba, and its relationship with environmental conditions

Environmental Factors Affecting Diversity, Structure, and Temporal Variation of Airborne Fungal Communities in a Research and Teaching Building of Tianjin University, China

Loading Rates of Dust and Bioburden in Dwellings in an Inland City of Southern Europe

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