title: Airborne olive pollen counts are not representative of exposure to the major olive allergen Ole e 1.
abstract: Pollen is routinely monitored, but it is unknown whether pollen counts represent allergen exposure. We therefore simultaneously determined olive pollen and Ole e 1 in ambient air in Córdoba, Spain, and Évora, Portugal, using Hirst-type traps for pollen and high-volume cascade impactors for allergen. Pollen from different days released 12-fold different amounts of Ole e 1 per pollen (both locations P < 0.001). Average allergen release from pollen (pollen potency) was much higher in Córdoba (3.9 pg Ole e 1/pollen) than in Évora (0.8 pg Ole e 1/pollen, P = 0.004). Indeed, yearly olive pollen counts in Córdoba were 2.4 times higher than in Évora, but Ole e 1 concentrations were 7.6 times higher. When modeling the origin of the pollen, >40% of Ole e 1 exposure in Évora was explained by high-potency pollen originating from the south of Spain. Thus, olive pollen can vary substantially in allergen release, even though they are morphologically identical.
authors: Department of Botany, Ecology and Plant Physiology, University of Córdoba, CeiA3, Córdoba, Spain.
authors: C
authors: C
authors: Galan
authors: C
authors: C
authors: Antunes
authors: R
authors: R
authors: Brandao
authors: C
authors: C
authors: Torres
authors: H
authors: H
authors: Garcia-Mozo
authors: E
authors: E
authors: Caeiro
authors: R
authors: R
authors: Ferro
authors: M
authors: M
authors: Prank
authors: M
authors: M
authors: Sofiev
authors: R
authors: R
authors: Albertini
authors: U
authors: U
authors: Berger
authors: L
authors: L
authors: Cecchi
authors: S
authors: S
authors: Celenk
authors: Ł
authors: Ł
authors: Grewling
authors: B
authors: B
authors: Jackowiak
authors: S
authors: S
authors: Jäger
authors: R
authors: R
authors: Kennedy
authors: A
authors: A
authors: Rantio-Lehtimäki
authors: G
authors: G
authors: Reese
authors: I
authors: I
authors: Sauliene
authors: M
authors: M
authors: Smith
authors: M
authors: M
authors: Thibaudon
authors: B
authors: B
authors: Weber
authors: I
authors: I
authors: Weichenmeier
authors: G
authors: G
authors: Pusch
authors: J T M
authors: JT
authors: Buters
mesh_terms: D000485:Allergens / Q000032:analysis*; D052179:Antigens, Plant / Q000032:analysis*; D004781:Environmental Exposure / Q000032:analysis* / Q000706:statistics & numerical data; D004784:Environmental Monitoring; D004797:Enzyme-Linked Immunosorbent Assay; D015233:Models, Statistical; D010940:Plant Proteins / Q000032:analysis*; D011058:Pollen; D011174:Portugal; D012621:Seasons; D013030:Spain; D014887:Weather
chemical_list: D000485:Allergens; D052179:Antigens, Plant; C081946:Ole e I protein, Olea europaea; D010940:Plant Proteins