+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Airborne fungal ecological niche determination as one of the possibilities for indirect mycotoxin risk assessment in indoor air

, : Airborne fungal ecological niche determination as one of the possibilities for indirect mycotoxin risk assessment in indoor air. Environmental Toxicology 16(1): 1-8, February

Based on the microbiological analysis of air samples from occupied spaces, some possibilities for indirect risk assessment of mycotoxin-related health problems are proposed. Airborne fungi could be classified on the basis of the relationship between the two environmental factors and their combinations, i.e., temperature and water requirements (water activity aw). One type involves three different groups of molds, selected on the basis of the quantitative and qualitative information about the ability of fungi to sporulate under different environmental conditions: group (i), represented by Aspergillus nidulans, A. niger, and A. ochraceus, and characterized by sporulation which was more dependent on temperature than on water activity; (ii), represented by A. flavus and A. versicolor, in which sporulation was approximately equal and depended on both the temperature changes and aw alterations; and (iii), represented by Cladosporium sp., Penicillium cyclopium, and P. citrinum, in which sporulation depended more on alteration of the aw conditions than on temperature changes. Another type is characterized by four sporulation rates with two levels of mycotoxin risk accumulation in the spores (conidia) of each mold species: large (Ia) and moderate (Ib) sporulation rates with a risk of mycotoxin accumulation (aw gtoreq 86; t gtoreq 12degreeC); rare sporulation (IIa) and absence of sporulation (IIb), without risk of mycotoxin accumulation (aw ltoreq 86; t ltoreq 12degreeC). In conclusion, providing a useful guide for two dimensions, temperature and water activity for each of the three phases of fungal growth, i.e. germination, growth, and sporulation, could be important for determination of the fundamental niche of each fungus and its ability to form or accumulate mycotoxin. Special emphasis should be given to the indirect mycotoxin risk assessment in heating, ventilation, and air conditioning systems.


PMID: 11345539

DOI: 10.1002/1522-7278(2001)16:1<1::aid-tox10>;2-8

Other references

Sawabu, N.; Kidani, H.; Yoneshima, M.; Toya, D.; Hattori, N., 1983: A new tumor marker--novel gamma-GTP isoenzyme. The authors discussed the clinical significance and some properties of the novel gamma-GTP isoenzyme (novel gamma-GTP) which was reported to be specific for sera of hepatocellular carcinoma (HCC) in our previous publications. One or more of specif...

Hattori Y.; Nakaya H.; Tohse N.; Kanno M., 1987: Effects of nifedipine and ryanodine on the h1 mediated electromechanical response in guinea pig left atria. Japanese Journal of Pharmacology 43(SUPPL): 252P

Crowell, Kenneth L., 1963: On determinants of insular faunas. An attempt is made to account for the success of limited numbers of species on islands by using the foliage height distribution of available habitats. It is suggested that only those species which find their habitat requirements adequately fulfill...

Yagi, H.; Amiya, E.; Ando, J.; Watanabe, M.; Yanaba, K.; Ikemura, M.; Fukayama, M.; Komuro, I., 2015: In-stent restenosis exacerbated by drug-induced severe eosinophilia after second-generation drug-eluting stent implantation. In-stent restenosis (ISR) is still a recognized clinical problem in the era of drug-eluting stent (DES). Some previous studies have suggested that circulating eosinophils play an important role in both restenosis and thrombosis after DES implantat...

Anonymous, 2013: Formation of a penumbra in a decaying sunspot. Andcompare its properties with those seen during the development of a proto-spot. : High-resolution spectropolarimetric observations of active regionNOAA 11283 were obtained from the spectro-polarimeter on board Hinode. Thesewere complemented with...

Casswell, S., 2012: Tackling NCDs: a different approach is needed. Lancet 379(9829): 1873; Author Reply 1873-4

Ito Y., 1986: Occurrence of heparin inhibitable hemagglutinating activity in leaves of fava bean vicia faba. A hemagglutinating activity which is inhibitable by heparin was extracted from leaves of fava bean. The activity was partially purified by ammonium sulfate fractionation followed by affinity chromatography of heparin-agarose. The purified activity...

Catizone, P.; Viggiani, P., 1978: Preliminary research results on the biology of the genus Phalaris. Germination tests on Phalaris spp. in the laboratory and in pots are discussed. In the field, the effect of infestations on wheat yields was the result of interaction of many factors including the species of Phalaris, the wheat cv., crop populatio...

Kanemitsu, K.; Ikejima, H.; Shimada, J., 1999: Neurotoxicity of antiviral agents. Ryoikibetsu Shokogun Shirizu: 568-570

Tamura, B.Miyuki.; Chang, B., 2003: Botulinum toxin: application into acupuncture points for migraine. : Botulinum toxin has been employed in orthopedics, physiatrics, gastroenterology, gynecology, neurology, pediatrics, general surgery, plastic surgery, and several other specialties. We have applied this drug to treat hyperhidrosis and wrinkles in...