Olea europaea pollen counts and aeroallergen levels predict clinical symptoms in patients allergic to olive pollen

Brito, Francisco Feo; Gimeno, Pilar Mur; Carnés, Jerónimo; Martín, Raúl Martín; Fernández-Caldas, Enrique; Lara, Pilar; López–Fidalgo, Jesús; Guerra, Francisco

doi:10.1016/j.anai.2010.11.003

Cited by 62 publications

(43 citation statements)

References 34 publications

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“…However, when comparing the 10% lowest allergen release values per pollen with the 10% highest values, the daily allergen release difference across Europe and also within each country was >10-fold. Several other authors also report differences in allergen release per pollen for birch and olive pollen (Pehkonen and Rantio-Lehtimäki, 1994;Schäppi et al, 1997a;De Linares et al, 2007;Buters et al, 2010;Brito et al, 2011). This study shows that the variation in allergen release per pollen is substantial but equally distributed across the European birch tree habitat.…”

Section: Allergen Bet V 1 In Ambient Airmentioning

confidence: 57%

“…These compounds can act as adjuvants, however the allergen from pollen is the dominant factor for evoking symptoms (Brito et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Allergen exposure determines sensitization (Olmedo et al, 2011) and allergy symptoms correlate with exposure (Corrigan et al, 2005;Brito et al, 2011). Exposure to outdoor airborne allergens is monitored by determining the concentration of pollen in ambient air with EAN (European Aeroallergen Network) database, a network of over 350 pollen traps spread over Europe (www.ean-net.org, accessed January 2012).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Release of Bet v 1 from birch pollen from 5 European countries. Results from the HIALINE study

Buters

Thibaudon

Smith

et al. 2012

Atmospheric Environment

148

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Section: Allergen Bet V 1 In Ambient Airmentioning

confidence: 57%

“…These compounds can act as adjuvants, however the allergen from pollen is the dominant factor for evoking symptoms (Brito et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Release of Bet v 1 from birch pollen from 5 European countries. Results from the HIALINE study

Buters

Thibaudon

Smith

et al. 2012

Atmospheric Environment

148

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“…In a recent European study of release of the major birch pollen allergen Bet v 1 [38], a >10-fold difference in daily allergen release per pollen was measured. However, in a Spanish study [39], these two biological parameters ( Olea europea pollen counts and allergen exposure) were significantly correlated with the symptom scores of allergic patients. Future studies monitoring the Bet v 1 allergen itself together with birch pollen counts would be of interest in assessing the accurate relationship between clinical symptoms and birch exposure.…”

Section: Discussionmentioning

confidence: 99%

Effects of Airborne Birch Pollen Levels on Clinical Symptoms of Seasonal Allergic Rhinoconjunctivitis

Caillaud¹,

Martin²,

Ségala³

et al. 2013

Int Arch Allergy Immunol

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Background: Most panel studies focusing on rhinitis and conjunctivitis symptoms and birch pollen have been performed on a linear basis and have not included air pollution and meteorological variables as potential confounders. The objective of this panel study was to assess the relationship between symptoms of seasonal allergic rhinoconjunctivitis and daily airborne birch pollen concentrations, checking with adequate statistical tools the shapes of concentration-response curves and controlling for confounders. Methods: The severity of rhinitis, conjunctivitis, and bronchial symptoms was recorded daily in March and April 2010 (3,311 person-days) in 61 seasonal allergic rhinoconjunctivitis patients sensitized to birch. Data were analyzed with generalized additive and generalized estimating equation models to quantify the effects of birch pollens. Results: The relationship between birch pollen and the percentage of patients with nasal, ocular and bronchial symptoms was linear until birch daily average concentrations of, respectively, 110, 70, and 70 grains/m³; it reached a plateau thereafter. For an increase of 10 grains/m³, the OR (95% CI) for nasal, ocular, and bronchial symptoms were, respectively, 1.07 (1.03-1.12), 1.17 (1.08-1.27), and 1.12 (1.03-1.21). At the beginning of the season, no nasal or ocular symptoms were observed below a threshold of 30 grains/m³. Conclusions: Adequate modeling regression shows that the clinical response to natural exposure to birch pollen in sensitized patients varies during Betula pollen season, with a threshold at the beginning of the season, while over the whole season the relationship is linear for nasal, ocular, and bronchial symptoms up to a saturation point, followed by a plateau.

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“…The prevalence of positive skin prick tests among pollinosis patients in Spain is 87 % for Poaceae and 36.3 % for Olea (D'Amato et al 1998). Studies about the clinical symptoms in patients suffering from allergy showed that Olea (Brito et al 2011) and Poaceae (Walker et al 2001) caused rhinitis and asthma as prevalent symptoms. The highest Olea pollen counts for Andalusia were recorded in Jaén, the province with the largest surface area of olive groves.…”

Section: Discussionmentioning

confidence: 99%

Pollen calendars: a guide to common airborne pollen in Andalusia

et al. 2015

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This paper presents pollen calendars for the capital cities of the eight provinces of Andalusia (south of Spain) based on the airborne pollen counts recorded in a 10-year historical database. Pollen calendars are useful in the prevention and diagnosis of hay fever, in that they enable the timing and severity of the pollen season to be clearly defined. The differences encountered-in terms of both pollen spectra and the length and timing of the pollen season (start date, peak date, peak concentration and end date)-highlight not only the considerable diversity of urban landscapes in the eight Andalusian cities, but also the effect of urban green areas and periurban landscapes on airborne pollen levels. Green areas should be designed with a view to promoting benefits for the local population and avoiding the problems associated with the massive use of allergenic plants.

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Olea europaea pollen counts and aeroallergen levels predict clinical symptoms in patients allergic to olive pollen

Cited by 62 publications

References 34 publications

Release of Bet v 1 from birch pollen from 5 European countries. Results from the HIALINE study

Release of Bet v 1 from birch pollen from 5 European countries. Results from the HIALINE study

Effects of Airborne Birch Pollen Levels on Clinical Symptoms of Seasonal Allergic Rhinoconjunctivitis

Pollen calendars: a guide to common airborne pollen in Andalusia

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