Hemolytic potential of bioaerosol-derived Aspergillus, Penicillium and Talaromyces mould isolates
Aspergillus, Penicillium and Talaromyces species are frequently cited as contaminants of various substrata and are often associated with indoor environments. The main purpose of this study was to assess the potential pathogenicity of aerosol-derived fungi from Aspergillus, Penicillium and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Matica srpska
2022-01-01
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| Series: | Zbornik Matice Srpske za Prirodne Nauke |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-4906/2022/0352-49062243015S.pdf |
| Summary: | Aspergillus, Penicillium and Talaromyces species are frequently cited as
contaminants of various substrata and are often associated with indoor
environments. The main purpose of this study was to assess the potential
pathogenicity of aerosol-derived fungi from Aspergillus, Penicillium and
Talaromyces genera, isolated in the rooms for conservation of cultural
heritage artefacts, via estimating hemolytic activity. Hemolysis was
detected in 20.58% of tested isolates at 37°C (11.76% partial and 8.82%
complete) and 64.71% at 25°C (38.24% partial and 26.47% complete). The
majority of isolates that caused α hemolysis led to the significant
oxidation of hemoglobin iron with methemoglobin content in blood agar
medium, higher than 80%. Aspergillus melleus was the only tested fungi that
caused formation of ferry hemoglobin after the incubation at 25°C. Obtained
I values (index of activity for hemolytic exoenzymes) for α hemolysis were
in range of from 0.13 to 0.60 for 37°C, while for the temperature of 25°C
values were in range of from 0.08 to 0.50. The same values for β hemolysis
were in range of from 0.03 to 0.08 (37°C), i.e. 0.06 to 0.49 (25°C).
Monitoring of pathogenic airborne fungi in indoor environments and
estimation of their virulence is essential for the adequate assessment of
human health risks. |
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| ISSN: | 0352-4906 2406-0828 |