Parietaria major allergens vs pollen in the air we breathe
De Linares Fernández, Concepción (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Alcázar, Purificación (Universidad de Córdoba. Departamento de Botánica, Ecología y Fisiología Vegetal)
Valle, Ana M. (Campus de la Salud Hospital)
Díaz de la Guardia, Consuelo (Universidad de Granada)
Galan Soldevilla, Carmen (Universidad de Córdoba. Departamento de Botánica, Ecología y Fisiología Vegetal)
Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia

Data:	2019
Resum:	Parietaria and Urtica are the genera from the Urticaceae family more frequent in Mediterranean and Atlantic areas. Moreover, both genera share pollination periods, and their pollen (of the main species) is so similar that there is no aerobiological evidence of the proportion of each of them in the airborne pollen identification, except in the case of U. membranacea. However, Parietaria is one of the most important causes of pollinosis and Urtica is not. Our aim is determine if airborne Urticaceae pollen concentrations show the aerodynamics of the two major allergens of Parietaria (Par j 1 and Par j 2) as well as the allergen distribution in the different-sized particles. The air was sampled during the pollination period of Urticaceae using Hirst Volumetric Sampler and Andersen Cascade Impactor in two cities of Southern Spain (Córdoba and Granada). The samples were analysed by the methodology proposed by the Spanish Aerobiology Network (REA) and the minimum requirements of the European Aeroallergen Society (EAS) for pollen, and by ELISA immunoassay for allergens. The patterns of airborne pollen and Par j 1-Par j 2 were present in the air during the studied period, although with irregular oscillations. Urticaceae pollen and Par j 1-Par j 2 allergens located in PM2. 5 showed positive and significant correlation during the period with maximum concentrations (March to April). Parietaria aeroallergens show similar pattern of Urticaceae airborne pollen. Urticaceae pollen calendar is as a good tool for allergy prevention. On the other hand, important concentrations of Par j 1 and Par j 2 were located in the breathable fraction (PM2. 5), which could explain the asthmatic symptoms in the allergic population to Parietaria.
Ajuts:	Ministerio de Economía y Competitividad CGL2006-1648-CO3-02
Nota:	Unidad de excelencia María de Maeztu MdM-2015-0552
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Par j 1-Par j 2 allergens ; Urticaceae pollen ; Biological air quality ; ELISA analysis
Publicat a:	Environmental research, Vol. 176 (September 2019) , art. 108514, ISSN 0013-9351

DOI: 10.1016/j.envres.2019.05.045
PMID: 31202045

Postprint 18 p, 758.8 KB

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