1- Sociedade Portuguesa de Alergologia e Imunologia Clínica- SPAIC
2 - Instituto de Ciências Agrárias e Ambientais Mediterrânicas - ICAAM, Universidade de Évora
3 - Centro de Competência das Ciências da Vida, Universidade da Madeira
4 - Serviço de Imunoalergologia, Área de Pediatria Médica, Hospital D. Estefânia, Centro Hospitalar de Lisboa Central, EPE
5 - Unidade de Imunoalergologia, Hospital CUF Descobertas
6 - Centro de Imunoalergologia do Algarve
7 - Departamento de Biologia, Universidade de Évora
XVIII Congreso Latinoamericano de Alergia, Asma e Inmunología, 14 a 16 de Março de 2015, Buenos Aires, Argentina
- Poster com discussão
Objectives: 1) To identify and quantify the fungal spores types presents in the atmosphere of Lisbon, and 2) to analyze the influence of meteorological factors in their average daily concentrations.
Methods: The fungal spores types data from January 1 to December 31 of 2013 of the monitoring station of Lisbon of the Portuguese Aerobiology Network (RPA) was used to analyze and correlate the influence of meteorological factors, such as temperature, precipitation and humidity, on the concentrations of various types of fungal spores used the Spearman’s correlation.
Results: A total of 657.921 fungal spores were recorded. Higher variability of spores was found and a total of the 105 different types was identified. The most abundant fungal spores types in the atmosphere of Lisbon were Cladosporium cladosporoide (54%), Amanita (9%), Ustilago (4%), Leptosphaeria (4%) Coprinus (4%) Cladosporium herbarum (4%), Mycospharella (3%), Boletus (2%), Aspergillus-Penicillium (2%), Agaricus (1%) and Alternaria (1%). The highest concentrations were recorded between late spring and autumn, and particularly high in early autumn; the lowest levels of fungal spores were recorded in the winter months. The highest index monthly and maximum daily concentration was obtained in October with a total of 172.507 fungal spores and 13.561 fungal spores/m3, respectively. A clear effect of meteorological parameters on the concentrations of spores was observed. The type of influence depended of the type of fungal spore analyzed. In the case of Cladosporium, Alternaria and Ustilago types, a positive effect of the temperature and a negative effect of the relative humidity and precipitation on the atmospheric concentrations of these spores were observed.
Conclusion: A higher fungi concentration of fungal spores was found in outdoor air. Also several types of fungi was found and some species such as Alternaria could be implicated in severe asthma exacerbations The co-occurrence of the multiple fungal spores types in the atmosphere of this region can increase the risk of sensitization. So the regular fungal spores monitoring will benefit health professionals and patients sensitized to fungi to develop prevention measures and develop future strategies to minimize respiratory pathologies due to fungi exposition.
Palavras Chave: fungal spores, Lisbon, meteorological factors