Document Detail

Olea europaea pollen counts and aeroallergen levels predict clinical symptoms in patients allergic to olive pollen.
MedLine Citation:
PMID:  21277516     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: Allergic symptoms are commonly related to atmospheric pollen counts in sensitized allergic individuals. However, concordance between symptoms, pollen counts, and aeroallergen concentrations is not always good.
OBJECTIVES: To determine the correlation between olive pollen counts, aeroallergen levels, and clinical symptoms in patients with allergic asthma or rhinitis in Ciudad Real (Spain).
METHODS: Two types of samplers were used to determine pollen exposure: a Burkard spore trap to collect pollen grains and a high-volume air sampler to collect airborne particles. A total of 366 air filters were collected. After extraction, they were analyzed by specific immunoglobulin E enzyme-linked immunosorbent assay inhibition using a serum pool containing high titers of olive-specific immunoglobulin E. Twenty olive-pollen monosensitized patients were asked to record their daily symptoms before, during, and after the olive pollen season.
RESULTS: Olive pollen was detected between April 21 and June 30, 2004. Symptoms showed positive and significant correlations with pollen counts (r = 0.700, P < .001) and aeroallergen levels (r = 0.803, P < .001). Using a Poisson regression model, relative changes in aeroallergen concentrations and pollen counts were found to be similar and significant. Threshold levels for the induction of symptoms were 162 olive pollen grains/m(3) and 22.7 ng of olive pollen allergen/m(3) (equivalent to 0.9 ng/m(3) of Ole e 1).
CONCLUSIONS: Olive aeroallergen concentrations and pollen counts are positively associated with symptoms of rhinitis and asthma in olive-allergic patients. Both data may be used in the clinical follow-up of these patients.
Francisco Feo Brito; Pilar Mur Gimeno; Jerónimo Carnés; Raúl Martín; Enrique Fernández-Caldas; Pilar Lara; Jesús López-Fidalgo; Francisco Guerra
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Publication Detail:
Type:  Journal Article     Date:  2011-01-08
Journal Detail:
Title:  Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology     Volume:  106     ISSN:  1534-4436     ISO Abbreviation:  Ann. Allergy Asthma Immunol.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9503580     Medline TA:  Ann Allergy Asthma Immunol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  146-52     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 American College of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.
Allergy Section, General Hospital, Ciudad Real, Spain.
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