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Molds and mycotoxins in dust from water-damaged homes in New Orleans after hurricane Katrina.

Bloom, Erica LU ; Grimsley, L F; Pehrson, Christina LU ; Lewis, J and Larsson, L (2009) In Indoor Air 19. p.153-158
Abstract
Dust collected in New Orleans homes mold-contaminated because of the flooding after hurricane Katrina was analyzed for molds and mycotoxins. The mycoflora was studied by cultivation and quantitative PCR for selected molds. The most commonly found mold taxa were Aspergillus, Cladosporium, and Penicillium. Verrucarol, a hydrolysis product of macrocyclic trichothecenes predominately produced by Stachybotrys spp. was identified in three dust samples by gas chromatography-tandem mass spectrometry, and sterigmatocystin (produced by various Aspergillus spp.) was found in two samples by high pressure liquid chromatography-tandem mass spectrometry. This is the first demonstration of mycotoxins in Katrina-associated dust samples. The analytical... (More)
Dust collected in New Orleans homes mold-contaminated because of the flooding after hurricane Katrina was analyzed for molds and mycotoxins. The mycoflora was studied by cultivation and quantitative PCR for selected molds. The most commonly found mold taxa were Aspergillus, Cladosporium, and Penicillium. Verrucarol, a hydrolysis product of macrocyclic trichothecenes predominately produced by Stachybotrys spp. was identified in three dust samples by gas chromatography-tandem mass spectrometry, and sterigmatocystin (produced by various Aspergillus spp.) was found in two samples by high pressure liquid chromatography-tandem mass spectrometry. This is the first demonstration of mycotoxins in Katrina-associated dust samples. The analytical methods used represent valuable tools in further studies on bioaerosol exposure and health risks. Practical Implications In the aftermath of natural disasters like hurricane Katrina water-damages on infrastructure and public and private property are often associated with health risks for remediation workers and returning residents. In the case of New Orleans evaluations of health hazards, health studies, and assessments of bioaerosol have been conducted previously. However, until now mycotoxins have not been addressed. Our study shows, for the first time, the presence of mycotoxins in dust collected in houses in New Orleans mold-contaminated because of the hurricane Katrina. The results may highlight the potential health threats posed by mold aerosols in post-disaster inhabited areas. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Indoor Air
volume
19
pages
153 - 158
publisher
Wiley-Blackwell
external identifiers
  • WOS:000264610900008
  • PMID:19191921
  • Scopus:63349095047
ISSN
0905-6947
DOI
10.1111/j.1600-0668.2008.00574.x
language
English
LU publication?
yes
id
312f0e3c-2ef3-4620-9e6d-b73acf2a0544 (old id 1302895)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/19191921?dopt=Abstract
date added to LUP
2009-03-04 16:41:49
date last changed
2016-11-27 04:29:20
@misc{312f0e3c-2ef3-4620-9e6d-b73acf2a0544,
  abstract     = {Dust collected in New Orleans homes mold-contaminated because of the flooding after hurricane Katrina was analyzed for molds and mycotoxins. The mycoflora was studied by cultivation and quantitative PCR for selected molds. The most commonly found mold taxa were Aspergillus, Cladosporium, and Penicillium. Verrucarol, a hydrolysis product of macrocyclic trichothecenes predominately produced by Stachybotrys spp. was identified in three dust samples by gas chromatography-tandem mass spectrometry, and sterigmatocystin (produced by various Aspergillus spp.) was found in two samples by high pressure liquid chromatography-tandem mass spectrometry. This is the first demonstration of mycotoxins in Katrina-associated dust samples. The analytical methods used represent valuable tools in further studies on bioaerosol exposure and health risks. Practical Implications In the aftermath of natural disasters like hurricane Katrina water-damages on infrastructure and public and private property are often associated with health risks for remediation workers and returning residents. In the case of New Orleans evaluations of health hazards, health studies, and assessments of bioaerosol have been conducted previously. However, until now mycotoxins have not been addressed. Our study shows, for the first time, the presence of mycotoxins in dust collected in houses in New Orleans mold-contaminated because of the hurricane Katrina. The results may highlight the potential health threats posed by mold aerosols in post-disaster inhabited areas.},
  author       = {Bloom, Erica and Grimsley, L F and Pehrson, Christina and Lewis, J and Larsson, L},
  issn         = {0905-6947},
  language     = {eng},
  pages        = {153--158},
  publisher    = {ARRAY(0x9fa4018)},
  series       = {Indoor Air},
  title        = {Molds and mycotoxins in dust from water-damaged homes in New Orleans after hurricane Katrina.},
  url          = {http://dx.doi.org/10.1111/j.1600-0668.2008.00574.x},
  volume       = {19},
  year         = {2009},
}