The population of Talca was exposed to high concentrations of allergenic pollen, such as P. acerifolia, A. pseudoplatanus, and grasses in the months of August through November. The detection of O. europaea and A. artemisiifolia is important as these are emergent pollens in the city of Talca. Aerobiological monitoring will provide the community with reliable information about the level of allergenic pollens, improving treatment and quality of life of patients with respiratory allergy.
Artículo de publicación ISIParietaria pollen has never been considered
as a significant cause of pollinosis in Chile; therefore, the
sensitization to Parietaria study has never been included
in the study of patients with clinical suspicion of
pollinosis in this region. The objective of this study was
to describe the clinical characteristics of pollinosis caused
by Parietaria in the Valparaı´so region, related to air
concentrations of this kind of pollen. A cross-sectional
studywas performedin the city of Valparaı´so. It consisted
of two stages: In the first, pollen grains were counted
between 1999 and 2001. In the second, a sensitization
profile on a patient population diagnosed with ARC
(allergic rhinoconjunctivitis) was evaluated. Parietaria
judaica (P. judiaca) presented pollination all year long,
with aggravation in the spring and summer, and with
values reaching 80 grains/m3 (weekly average). These
findings determined the transience of the symptoms in
this population, which is mainly perennial with seasonal
aggravations. A total of 72 atopic subjects were obtained
during the whole sample recollection period. P. judaica
was the second most frequent cause of sensitization
(60 %) after Dermatophagoides in the sample overall.
Also, in monosensitized subjects, it was the first cause of
pollen sensitization. P. judaica represents the second
cause of allergy in Valparaı´so and the first cause of
pollinosis. These findings suggest the importance of quantifying Parietaria in Valparaı´so and near cities, plus
investigating the presence of sensitization and symptoms
to allergies in a significant proportion of patients in this
region
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