Relacion entre factores meteorológicos y recuentos de pólenes de gramíneas causantes de alergias

Ponencia presentada en: IV Congreso de la Asociación Española de Climatología "El Clima entre el Mar y la Montaña", celebrado en Santander del 2 al 5 de noviembre de 2004.[ES]Los pólenes de gramíneas son la causa más importante de la fiebre del heno. Esta comunicación es desarrollo y ampliación de trabajos previos para hallar relaciones entre factores meteorológicos y cantidades totales de dichos pólenes en la ciudad de Madrid. Se establecen correlaciones entre diferentes combinaciones de totales de precipitación y temperaturas para los meses previos y durante la época de polinización en la zona centro de España: meses de mayo y junio. El periodo de datos utilizado abarca desde 1979 a 2001.Los resultados apuntan fundamentalmente a la importancia de las precipitaciones invernales previas a la temporada de floración por lo que puede ser utilizado como un predictor de la intensidad del fenómeno en la primavera siguiente.[EN]Grass pollens are the most important cause of hay fever in Spain. This communication is a development and improvement of previous works in order to find relationships between meteorological factors and total quantities of those pollens in the area of Madrid. Several correlations were found among different combinations of total of precipitation and temperatures for the previous months and during the pollination period in the central area of Spain: May and June. Data period ranges from 1979 to 2001. The importance of previous winter precipitations to the pollination season is highlighted. That factor could be used as a predictor for the intensity of the allergenic phenomenon in the following spring

Predicción de eventos extremos de polen alergénico en la Comunidad de Madrid. Inicio de la estación polínica del plátano de sombra

Ponencia presentada en: XXX Jornadas Científicas de la AME y el IX Encuentro Hispano Luso de Meteorología celebrado en Zaragoza, del 5 al 7 de mayo de 2008.Allergenic pollens originated health problems in a rising segment of population on developed countries. Adequate forecast of extreme health related events such peaks or start of pollination season could allow to take preventive measurement that reduce hospitalization cases and an improvement in life conditions for patients that are allergic to pollens. In central part of Spain, main species that originate such pollens are grasses, plane tree, olive tree and Cupressaceae. In Madrid autonomous region, PALINOCAM Network operates 11 pollen catchments stations and issues pollen forecasts daily. AEMET supports this structure providing observed and forecast meteorological data and also new prediction tools. In this paper, a description of plane tree start of pollination season forecast procedure is shown. Main basis is the fact that it is needed to reach a value threshold on previous heat accumulation that allow to plane tree buttons to grow and start spreading its pollen. Threshold adjustment procedure for accumulate heat and daily pollen accounts is described. Up to seven days of forecasted extreme temperatures are added to observed temperature series to give forecasted accumulated heat. An evaluation of an operational scheme for the start of pollination season in March 2008 for Madrid-City has been done

Predicción del inicio de la temporada de polinización del plátano de sombra en la Comunidad de Madrid y en la ciudad de Córdoba. Técnicas y resultados

Esta nota técnica es el resultado de un trabajo interdisciplinar en el que han intervenido meteorólogos, biólogos y médicos, con el objetivo final de mejorar la calidad de vida de las personas aquejadas por problemas de alergia. Con el fin de avanzar en el conocimiento de todos los aspectos ligados a la emisión de polen de plátano en primavera, poder así mejorar el actual sistema de vigilancia de dicho polen y optimizar los recursos del sistema sanitario, han colaborado AEMET, que ha aportado su banco de datos de variables meteorológicas para diferentes horas y distintos emplazamientos, y la Consejería de Salud de la Comunidad de Madrid, que ha proporcionado los recuentos de polen diarios de su red Palinocam. El objetivo de esta colaboración ha sido avanzar en el conocimiento de todos los aspectos ligados a la emisión del polen del plátano para poder predecir con antelación suficiente su aparición en la primavera

Subjects develop tolerance to Pru p 3 but respiratory allergy to Pru p 9: A large study group from a peach exposed population.

Peach tree allergens are present in fruit, pollen, branches, and leaves, and can induce systemic, respiratory, cutaneous, and gastrointestinal symptoms. We studied the capacity of peach fruit/Pru p 1, Pru p 3, Pru p 4, Pru p 7 and peach pollen/Pru p 9 for inducing symptoms following oral or respiratory exposure in a large group of subjects. We included 716 adults (aged 21 to 83 y.o.) exposed to peach tree pollen and fruit intake in the study population. Participants completed a questionnaire and were skin tested with a panel of inhalant and food allergens, including peach tree pollen, Pru p 9 and peach fruit skin extract. Immunoglobulin E antibodies (SIgE) to Pru p 1, Pru p 3, Pru p 4 and Pru p 7 were quantified. Sensitised subjects underwent oral food challenge with peach fruit and nasal provocation test with peach tree pollen and Pru p 9. The prevalence of sensitisation to peach fruit was 5% and most of these had SIgE to Pru p 3, with a very low proportion to Pru p 4 SIgE and no SIgE to Pru p 1 and Pru p 7. In only 1.8%, anaphylaxis was the clinical entity induced. Cases with positive skin tests to peach and SIgE to Pru p 3 presented a good tolerance after oral challenge with peach fruit. The prevalence of skin sensitisation to peach tree pollen was 22%, with almost half recognising Pru p 9. This induced respiratory symptoms in those evaluated by nasal provocation. In a large population group exposed to peach fruit and peach tree pollen, most individuals were tolerant, even in those with SIgE to Pru p 3. A positive response to Pru p 9 was associated with respiratory allergy