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Contribution of Leptosphaeria Species Ascospores to Autumn Asthma in Areas of Oilseed Rape Production

Jedryczka, M., Sadyś, Magdalena, Gilski, M., Grinn-Gofron, A., Kaczmarek, J., Strzelczak, A. and Kennedy, R. (2016) Contribution of Leptosphaeria Species Ascospores to Autumn Asthma in Areas of Oilseed Rape Production. Annals of Allergy, Asthma & Immunology, 117 (5). pp. 495-501. ISSN 1081-1206

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Abstract

Background An increase in the number of hospital admissions from September to November in the northern hemisphere has been frequently reported. At this time, some species of fungal genus Leptosphaeria produce numerous ascospores, which are easily airborne. However, we lack knowledge about whether Leptosphaeria produces allergenic proteins. Objective To evaluate the potential of Leptosphaeria ascospores to contribute to autumn asthma. Methods Detailed bioinformatic analysis of proteins produced by Leptosphaeria maculans available in databases was performed and the data compared with allergens found in other airborne fungi. The concentrations of Leptosphaeria ascospores detected at 2 sites were compared to these obtained in other environments worldwide. Results We found that Leptosphaeria species produce proteins with a high identity to commonly known aeroallergens of several well-characterized molds. The level of amino acid identity significantly exceeded the allergen identity thresholds recommended by the Food and Agricultural Organization/World Health Organization (35%), which indicates allergenic properties of L maculans and ensures the same properties in the other Leptosphaeria species. Conclusion High concentrations of Leptosphaeria species ascospores in the autumn and postulated allergenicity of their proteins strongly suggest that this genus contributes to worldwide reported autumn asthma. The finding opens the question of allergenicity of the other never studied fungal species present in aeroplankton.

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Uncontrolled Keywords: Leptosphaeria, autumn asthma, allergens, aeroallergens, ascospores
Subjects: Q Science > QR Microbiology > QR180 Immunology
Divisions: Academic Departments > Institute of Science and the Environment
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Depositing User: Magdalena Sadys
Date Deposited: 27 Aug 2019 10:13
Last Modified: 27 Aug 2019 10:13
URI: https://eprints.worc.ac.uk/id/eprint/8568

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