Assessment of the Olea pollen and its major allergen Ole e 1 concentrations in the bioearosol of two biogeographical areas

Moreno‐Grau, Stella; Aira, María Jesús; Elvira‐Rendueles, Belén; Fernández-González, María; Fernández‐González, Delia; García-Sánchez, Antonio-Javier; Martínez-García, Ma José; Moreno, José María Ruiz; Negral, L.; Vara, A.; Rodríguez-Rajo, F. J.

doi:10.1016/j.atmosenv.2016.09.040

Cited by 30 publications

(21 citation statements)

References 38 publications

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“…Furthermore, our results showed that pollen concentrations and allergen potency of olive pollen was lower in the Northern Spain area than in the Mediterranean basin, also due to the expansion of the olive tree cultivation (Galań et al, 2013;Moreno-Grau et al, 2016;Plaza et al, 2016;Vara et al, 2016). The study of pollen potency is very important to know the real allergenic load in the atmosphere, as previous researches noted that pollen counts did not reproduce real allergen exposure (Galań et al, 2013).…”

Section: Discussionmentioning

confidence: 72%

“…The study of pollen potency is very important to know the real allergenic load in the atmosphere, as previous researches noted that pollen counts did not reproduce real allergen exposure (Galań et al, 2013). Yearly Olea pollen values in southern Spain are 2 and 8 times higher than in the central and northern areas, respectively, while rates increase considerably to seven and 40 times when allergen exposure was assessed (Galań et al, 2013;Moreno-Grau et al, 2016). Differences in pollen allergen potency reported across Europe may be related with specific local conditions, long-range transport and other factors.…”

Section: Discussionmentioning

confidence: 99%

“…This fact could justify higher sensitization rates in years with lower expected pollen concentrations. Olea tree is well recognized for its tendency towards an alternative bearing behaviour pattern for several biological features (Erel et al, 2013;Moreno-Grau et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

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Secondary Outcomes of the Ole e 1 Proteins Involved in Pollen Tube Development: Impact on Allergies

et al. 2020

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Ole e 1 protein is involved in olive fertilization mechanisms controlling pollen tube development. Similarly to the process by which pollen grains hydrated and form a pollen tube upon arrival at the female gametophyte, when pollen grains fall on the nasal mucosa the expression of Ole e 1 protein induce allergic reaction in sensitive individuals. The research was conducted in Ourense (North-western Spain), during the 2009-2018 period. Ole e 1 protein was collected using a Cyclone Sampler and processed with the ELISA methodology. Airborne Olea pollen were monitored using a Hirst type volumetric sampler. Allergy risk episodes identified by pollen concentrations were detected in five of the 10 studied years, all with moderate risk. Actual risk episodes of allergy increased when the combination of pollen and Ole e 1 concentrations were considered. Moderate risk episodes were detected during 9 years and high-risk episodes during 3 years. In addition, some years of low annual pollen concentrations recorded high total amounts of Ole e 1. During the years with lower pollen production, the tree increases the synthesis of Ole e 1 to ensure proper pollen tube elongation in order to complete a successful fertilization. This fact could justify higher sensitization rates in years in which a lower pollen production is expected. The present method contributes to the determination of the real exposure to Ole e 1 allergen evaluating the role of this protein as an aeroallergen for sensitized population. The allergen content in the atmosphere should be considered to enhance the prevention of pollinosis clinical symptomatology and the reduction of medicine consumption.

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Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 99%

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Secondary Outcomes of the Ole e 1 Proteins Involved in Pollen Tube Development: Impact on Allergies

et al. 2020

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“…Following the model of [35], the isentropic back-trajectories of air masses arriving in Cenlle at 12:00 UTC were calculated during the peak pollen concentration episodes. The backward trajectories were calculated for different heights from the earth surface, namely, 300, 500 and 750m [20,[36][37][38][39][40].…”

Section: Methodsmentioning

confidence: 99%

“…Passive traps were the former used for the determination of the total pollen concentration [15,18] or for spore sampling in the atmosphere of vineyards [19]. During recent years, works using volumetric traps have frequently been conducted [20][21][22][23][24]. The use of these two different methodologies provide accurate data depending on the characteristics of the sampling areas [18,25].…”

Section: Introductionmentioning

confidence: 99%

Integrating Phenological, Aerobiological and Weather Data to Study the Local and Regional Flowering Dynamics of Four Grapevine Cultivars

et al. 2020

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Phenological, aerobiological, and weather data are useful tools to study local and regional flowering dynamics in crops with economic importance. The present study focuses on four autochthonous grapevine cultivars, namely, ‘Treixadura’, ‘Godello’, ‘Loureira’, and ‘Albariño’ (Vitis vinifera L.), which belong to the Designation of Origin Ribeiro area (located in northwestern Spain) from 2015–2019. The aims of the work were to (1) compare the airborne pollen concentration in the vineyard collected by two different traps, (2) analyze the influence of the main meteorological variables on cultivar phenology and pollen concentration, and (3) test the contribution of the air masses on pollen concentrations in the vineyard. Phenological development has been assessed twice weekly, according to the Biologische Bundesanstalt, Bundessortenamt und Chemische Industrie (BBCH) scale. Airborne pollen concentrations were monitored by using two traps during stage 6 (flowering), namely, a Hirst volumetric sampler and a Cour passive trap. The bioclimatic conditions affected the duration of flowering, ranging from 11 and 24 days. The highest seasonal pollen integral (SPIn) was registered in 2016 for the Hirst sampler, with 302 pollen, and in 2019 for the Cour trap, with 1,797,765 pollen/m2/day. The main variables affecting pollen concentrations were average temperature during the main pollen season, as well as, temperatures and dew points during the pre-peak period. The relationship between pollen data registered by both traps and the obtained harvest indicate that the Hirst trap may be more suitable for predicting a local production and that the Cour sampler is more appropriate for forecasting regional productions.

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Pollen calendars of Cartagena, Lorca, and Murcia (Region of Murcia), southeastern Iberian Peninsula: 2010–2017

et al. 2019

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Assessment of the Olea pollen and its major allergen Ole e 1 concentrations in the bioearosol of two biogeographical areas

Cited by 30 publications

References 38 publications

Secondary Outcomes of the Ole e 1 Proteins Involved in Pollen Tube Development: Impact on Allergies

Secondary Outcomes of the Ole e 1 Proteins Involved in Pollen Tube Development: Impact on Allergies

Integrating Phenological, Aerobiological and Weather Data to Study the Local and Regional Flowering Dynamics of Four Grapevine Cultivars

Pollen calendars of Cartagena, Lorca, and Murcia (Region of Murcia), southeastern Iberian Peninsula: 2010–2017

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