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Takahashi, Takanori

doi:10.1023/a:1006831111595

Cited by 125 publications

(29 citation statements)

References 18 publications

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“…Cladosporium spp., Aspergillus spp., and Penicillium spp. were the dominant airborne fungi in the present study (the abundance ratios of airborne levels were 38%, 26%, and 21% in the summer and 8.5%, 48%, and 14% in the winter, respectively), which is consistent with the results of previous studies (Takahashi, 1997;Saijo et al, 2011). It is notable that section Circumdati was detected in the indoor environment in the present study.…”

Section: Discussionsupporting

confidence: 93%

“…The indoor airborne fungal levels in every house in the summer and houses A, B, and F in the winter exceeded 1000 CFU/m 3 . The average indoor airborne fungal levels of typical Japanese houses, counted using DG18 cultures, have been found to be <13 to 3750 CFU/m 3 , with a geometric mean (GM) of 138 CFU/m 3 (Takahashi, 1997) and 0 to 3370 CFU/m 3 , with a GM of 248 CFU/m 3 (Saijo et al, 2011). Compared with these levels, the indoor fungal levels in houses in the evacuation zone were higher.…”

Section: Discussionmentioning

confidence: 98%

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Fungal levels in houses in the Fukushima Daiichi Nuclear Power Plant evacuation zone after the Great East Japan Earthquake

Shinohara

Tokumura

Hara³

et al. 2017

Journal of the Air & Waste Management Association

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The results suggest that residents' health could be at risk owing to the high levels of airborne fungi and toxic fungi Aspergillus section Circumdati. Therefore, monitoring and decontamination/disinfection of fungi are strongly recommended before residents are allowed to return permanently to their homes. In addition, returning to home with a certain frequency and adequate ventilation are necessary during similar situations, e.g., when residents cannot stay in their homes for a long period, because fungal levels in houses in the Fukushima Daiichi Nuclear Power Plant evacuation zone were inversely correlated with the frequency with which residents returned to visit their houses.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 98%

Fungal levels in houses in the Fukushima Daiichi Nuclear Power Plant evacuation zone after the Great East Japan Earthquake

Shinohara

Tokumura

Hara³

et al. 2017

Journal of the Air & Waste Management Association

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“…Culture-based methods are often biased by the selection of culture media [210]. Moreover, dead microorganisms are not culturable even though they may retain activity linked to allergenic proteins or toxic secondary metabolites [211].…”

Section: Discussionmentioning

confidence: 99%

Fungal Contaminants in Drinking Water Regulation? A Tale of Ecology, Exposure, Purification and Clinical Relevance

Babič

Gunde‐Cimerman

Vargha

et al. 2017

IJERPH

134

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Microbiological drinking water safety is traditionally monitored mainly by bacterial parameters that indicate faecal contamination. These parameters correlate with gastro-intestinal illness, despite the fact that viral agents, resulting from faecal contamination, are usually the cause. This leaves behind microbes that can cause illness other than gastro-intestinal and several emerging pathogens, disregarding non-endemic microbial contaminants and those with recent pathogenic activity reported. This white paper focuses on one group of contaminants known to cause allergies, opportunistic infections and intoxications: Fungi. It presents a review on their occurrence, ecology and physiology. Additionally, factors contributing to their presence in water distribution systems, as well as their effect on water quality are discussed. Presence of opportunistic and pathogenic fungi in drinking water can pose a health risk to consumers due to daily contact with water, via several exposure points, such as drinking and showering. The clinical relevance and influence on human health of the most common fungal contaminants in drinking water is discussed. Our goal with this paper is to place fungal contaminants on the roadmap of evidence based and emerging threats for drinking water quality safety regulations.

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“…8,23–25 Shelton et al 26 recorded the medium concentration of 500 CFU/m 3 in the United States. Takahashi 27 observed a concentration range of 13–2750 CFU/m 3 from the city of Yokohama, Japan. de Ana et al 28 isolated a total of 11,843 fungal colonies per cubic meter ranging from 0 to 1666 CFU/m 3 in different homes of allergic patients from Barcelona, Spain.…”

Section: Discussionmentioning

confidence: 99%

Indoor Fungal Concentration in the Homes of Allergic/Asthmatic Children in Delhi, India

Sharma

Deval

Priyadarshi

et al. 2011

Allergy�Rhinol (Providence)

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Allergy to fungi has been linked to a wide range of illnesses, including rhinitis and asthma. Therefore, exposure to fungi in home environment is an important factor for fungal allergy. The present study was aimed to investigate types of airborne fungi inside and outside the homes of asthmatic children and control subjects (nonasthmatic children). The dominant fungi were evaluated for their quantitative distribution and seasonal variation. The air samples were collected from indoors and immediate outdoors of 77 selected homes of children suffering from bronchial asthma/allergic rhinitis using Andersen volumetric air sampler. The isolated fungal genera/species were identified using reference literature, and statistical analysis of the dominant fungi was performed to study the difference in fungal concentration between indoor and immediate outdoor sites as well as in between different seasons. A total of 4423 air samples were collected from two indoor and immediate outdoor sites in a 1-year survey of 77 homes. This resulted in the isolation of an average of 110,091 and 107,070 fungal colonies per metric cube of air from indoor and outdoor sites, respectively. A total of 68 different molds were identified. Different species of Aspergillus, Alternaria, Cladosporium, and Penicillium were found to be the most prevalent fungi in Delhi homes, which constituted 88.6% of the total colonies indoors. Highest concentration was registered in autumn and winter months. Total as well as dominant fungi displayed statistically significant differences among the four seasons (p < 0.001). The largest number of isolations were the species of Aspergillus (>40% to total colony-forming units in indoors as well as outdoors) followed by Cladosporium spp. Annual concentration of Aspergillus spp. was significantly higher (p < 0.05) inside the homes when compared with outdoors. Most of the fungi also occurred at a significantly higher (p < 0.001) rate inside the homes when compared with immediate outdoors. Asthmatic children in Delhi are exposed to a substantial concentration of mold inside their homes as well as immediate outdoor air. The considerable seasonal distributions of fungi provide valuable data for investigation of the role of fungal exposure as a risk for respiratory disorders among patients suffering from allergy or asthma in Delhi.

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Cited by 125 publications

References 18 publications

Fungal levels in houses in the Fukushima Daiichi Nuclear Power Plant evacuation zone after the Great East Japan Earthquake

Fungal levels in houses in the Fukushima Daiichi Nuclear Power Plant evacuation zone after the Great East Japan Earthquake

Fungal Contaminants in Drinking Water Regulation? A Tale of Ecology, Exposure, Purification and Clinical Relevance

Indoor Fungal Concentration in the Homes of Allergic/Asthmatic Children in Delhi, India

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