Cited by 66Allergic Rhinitis and SensitizationAir Quality and Health ImpactsAsthma and respiratory diseases

Relationships between aeroallergen levels and hospital admissions for asthma in the Brussels-Capital Region: a daily time series analysis

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Guilbert, Ariane, Cox, Bianca, Bruffaerts, Nicolas, Hoebeke, Lucie, Packeu, Ann, Hendrickx, Marijke, De Cremer, Koen, Bladt, Sandrine +2 more·2018·Environmental Health

Abstract

Outdoor pollen grain and fungal spore concentrations have been associated with severe asthma exacerbations at the population level. The specific impact of each taxon and the concomitant effect of air pollution on these symptoms have, however, still to be better characterized. This study aimed to investigate the short-term associations between ambient concentrations of various aeroallergens and hospitalizations related to asthma in the Brussels-Capital Region (Belgium), an area recording especially high rates of admissions. Based on administrative records of asthma hospitalizations and regular monitoring of 11 tree/herbaceous pollen taxa and 2 fungal spore taxa, daily time series analyses covering the 2008–2013 period were performed. Effects up to 6 days after exposure were captured by combining quasi-Poisson regression with distributed lag models, adjusting for seasonal and long-term trends, day of the week, public holidays, mean temperature and relative humidity. Effect modification by age and air pollution (PM, NO 2 , O 3 ) was tested. A significant increase in asthma hospitalizations was observed for an interquartile range increase in grass (5.9%, 95% CI: 0.0, 12.0), birch (3.2%, 95% CI: 1.1, 5.3) and hornbeam (0.7%, 95% CI: 0.2, 1.3) pollen concentrations. For several taxa including grasses, an age modification effect was notable, the hospitalization risk tending to be higher in individuals younger than 60 years. Air pollutants impacted the relationships too: the risk appeared to be stronger for grass and birch pollen concentrations in case of high PM 10 and O 3 concentrations respectively. These findings suggest that airborne grass, birch and hornbeam pollen are associated with severe asthma exacerbations in the Brussels region. These compounds appear to act in synergy with air pollution and to more specifically affect young and intermediate age groups. Most of these life-threatening events could theoretically be prevented with improved disease diagnosis/management and targeted communication actions.

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  • Less evidence is available on the role of pollen in adult asthma, except in thunderstorm asthma.

    “However, less evidence is available on the role of pollen in adult asthma (132), except in “Thunderstorm asthma” which is related to a combination of factors as described below.”

    From Epidemiology of Asthma in Children and Adults (2019) · cites this paper as [132]

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Authors
Guilbert, A., Cox, B., Bruffaerts, N., Hoebeke, L., Packeu, A., Hendrickx, M., De Cremer, K., Bladt, S., Brasseur, O., & Van Nieuwenhuyse, A.
Affiliations
  • Institut Scientifique de Santé Publique (BE)
  • Hasselt University (BE)
Corresponding author
Guilbert, Ariane
Venue
Environmental Health
Published
2018-04-11
Volume
17
Issue
1
Pages
35-35
ISSN
1476-069X (ISSN-L)
OpenAlex
W2804802147
Cited by
66
References
54
Citations by year
2026: 4 · 2025: 5 · 2024: 3 · 2023: 13 · 2022: 11 · 2021: 13 · 2020: 10 · 2019: 6 · 2018: 1
FWCI
6.66
Type
journal article
Language
en
Open access
Locations
  • Environmental Health (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Lirias (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Document Server@UHasselt (UHasselt) (submittedVersion, cc-by)
Funders
  • Brussels Environment
  • Fonds Wetenschappelijk Onderzoek (12Q0517N)
Topics
  • Health Sciences › Medicine › Immunology and Allergy › Allergic Rhinitis and Sensitization
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
  • Health Sciences › Medicine › Physiology › Asthma and respiratory diseases
Keywords
asthma hospitalization, aeroallergens, pollen, fungal spores, grass pollen, birch pollen, air pollution, PM10, ozone, asthma exacerbations, age effect modification, Brussels-Capital Region
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Air Pollutants, Air Pollution, Allergens, Asthma, Belgium, Child, Child, Preschool, Cities, Environmental Monitoring, Hospitalization, Humans, Infant, Infant, Newborn, Middle Aged, Incidence, Young Adult

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