Seasonal Variability of Culturable Fungal Genera in the House Dust of Inner-City Residences

Cho, Sook Ja; Ramachandran, Gurumurthy; Banerjee, Sudipto; Ryan, Andrew D.; Adgate, John L.

doi:10.1080/15459620802490267

Cited by 9 publications

(3 citation statements)

References 52 publications

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“…These differences may be attributed to a higher level of human activities in House C, as described above. Unlike Heinrich et al (2003) and Cho et al (2008), who observed higher variability within homes than between homes and Chew et al (2001), who reported similar within-home and between-home variability in culturable fungi measurements, we found that the between-home variability exceeded the within-home variability. The main difference between the studies was that we used air sampling, whereas the three other studies used dust sampling.…”

Section: Fungal Sporescontrasting

confidence: 90%

“…Studies have shown that within-home variances for biological contaminants when measured in dust samples are relatively inflated. This is mainly driven by the variability in floor dust mass per unit area from one location to another location within each home (Cho et al 2008;Heinrich et al 2003). Therefore, the long-term air sampling of biological contaminants can be more advantageous than dust sampling, especially when attempting to establish a correlation between exposure and health outcomes.…”

Section: Fungal Sporesmentioning

confidence: 99%

“…Chew et al (2001) found that, during one year, the within-home variability for culturable fungi in dust samples exceeded the between-home variability. Consequently, Chew et al (2001), and later Heinrich et al (2003) and Cho et al (2008), reported that a single measurement of culturable fungi in dust is not a good proxy for the long-term exposure and recommended further detailed studies of the fungal spore counts over time.…”

Section: Introductionmentioning

confidence: 99%

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Temporal and spatial variation of indoor and outdoor airborne fungal spores, pollen, and (1→3)-β-d-glucan

et al. 2009

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Characterizing the variation in bioaerosol concentrations is important for the estimation of health effects associated with bioaerosols and planning exposure assessment strategies. This investigation was conducted in order to develop a better understanding of exposure to fungal spores, pollen, and (1?3)-b-D-glucan, by determining the variations of their concentrations between and within homes. In the study, 24-h air sampling was performed on five consecutive days in four Cincinnati area homes. The samples (a total of 160) were taken simultaneously in four different rooms inside each home and at four different outside locations near the home using Button Personal Inhalable Aerosol Samplers. The relative sizes of the between-and within-home variability to the total variability were calculated for each outcome. The relative sizes of the betweenand within-home variability in indoor air ranged from 0.10 to 0.52 and 0.09 to 0.10, respectively. For outdoor air, the between-and within-home variability ranged from 0.27 to 0.50 and 0.09 to 0.10, respectively. Thus, the ranges of within-home variability, both indoors and outdoors, were much less than the variability between different homes. The results suggest that, if long-term sampling methods are employed to characterize the bioaerosol exposure for a population, the sampling should be repeated in a larger number of homes as an alternative to replicate sampling in a fewer number of homes. When characterizing exposure within one home, the sampling should be repeated in different rooms, rather than repeating it on different days.

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Section: Fungal Sporescontrasting

confidence: 90%

Section: Fungal Sporesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Temporal and spatial variation of indoor and outdoor airborne fungal spores, pollen, and (1→3)-β-d-glucan

et al. 2009

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Aerobiological monitoring of Aspergillus/Penicillium spores during the potato storage

et al. 2011

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Aerobiological studies are widely used to determine the fungal spectrum in the air. These studies have revealed that Aspergillus/Penicillium spores are the most abundant spores in both outdoor and indoor environments. In this study, we have presented the variations in the concentration of these spores in an indoor environment (a potato store). Aerobiological sampling was conducted during five storage period (from 2002 to 2008 year) using a Hirst-type spore trap. The maximum spore concentrations were counted during the second fortnight of January and in the months of February and March, with values higher than 6,000 spores/m 3 per day. A correlation analysis between the Aspergillus/Penicillium spores and the main environmental parameters was performed; significant coefficients were obtained for spores present in the store previous days and mean temperature of the same day and previous days (P \ 0.001). Moreover, a regression model was established and predicted 53% variability of the data included in the analysis. The best obtained model took into account the Aspergillus/ Penicillium spore type levels of 1 previous day and the mean temperature in the preceding 2 days.

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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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Seasonal Variability of Culturable Fungal Genera in the House Dust of Inner-City Residences

Cited by 9 publications

References 52 publications

Temporal and spatial variation of indoor and outdoor airborne fungal spores, pollen, and (1→3)-β-d-glucan

Temporal and spatial variation of indoor and outdoor airborne fungal spores, pollen, and (1→3)-β-d-glucan

Aerobiological monitoring of Aspergillus/Penicillium spores during the potato storage

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

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