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James T. Li Mark C. Swanson Roy J. Rando Patricia Wentz-Murtha Inna G. Ovsyannikova Ferran Morell Manuel Lopez Charles E. Reed 《Aerobiologia》1996,12(1):173-176
There have been reported epidemics of severe asthma in Barcelona, Spain, linked to a 10 kDa low molecular mass (LMM) allergen from soybean hulls that became airborne during unloading of ships. As a preliminary probe of the potential for dispersion of this allergen in USA cities, four automated air samplers were placed around a grain elevator in New Orleans and operated continuously from May to October 1990. The allergen was extracted from the filters and immunochemically assayed for soybean aeroallergen. On 31 separate days, the airborne allergen concentration in at least one of the samples was over 10000 U/m3 similar to those observed in Barcelona on some epidemic days. Areas North and East of the elevator were most affected. Serologie studies showed that of 50 asthmatics from New Orleans who were participants in an unrelated clinical study 4 or 8% demonstrated elevated titers of IgE antibody to LMM soybean allergen. Only 1 of 475 control sera (half of which were also asthmatic) obtained elsewhere in the US was positive for LMM soybean IgE antibody. Based on the findings in this study, there is a great possibility that on some days there is enough soybean allergen in the air and a sufficient frequency of soybean aeroallergen RAST positive asthmatics in New Orleans to warrant further investigation of the contribution of soybean aeroallergen to asthma around the port of New Orleans.Supported by NIAID # A121255. Mayo Clinic and Foundation and Minnesota Lung Association. 相似文献
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This study presents the results obtained for airborne Betula pollen between 1992 and 2000 in Ourense, Spain, sampled by volumetric spore-trap (LANZONI VPPS2000). Annual and year-on-year variations were analyzed, and a statistical study of the correlation between daily counts and several meteorological parameters was performed. Birch pollen is present in the atmosphere during March and April in Ourense. Significant differences were observed among the different years. Values obtained for the correlation coefficient between Betula pollen counts and the various meteorological parameters studied indicate, for Ourense, a positive correlation between pollen count and both temperature and sunlight. A negative correlation was recorded for relative humidity. Temperature is thus the determining factor for flowering onset and intensity. Regression equations included values for the days prior to pollen concentration measurement in order to optimize results. 相似文献
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Ragweed pollen: The aeroallergen is spreading in Italy 总被引:1,自引:0,他引:1
Presently in Europe, ragweed pollen as an aeroallergen is not as important as Poaceae,Parietaria or Betulaceae, even if in some countries the plant is beginning to influence the local composition of the airborne pollen
spectra. In northern Italy, the presence of ragweed airborne pollen has only been reported since the beginning of the 1980’s
and it is increasingly spreading from year to year. Given this situation, the allergologists have begun to regard the potential
risk of sensitisation to ragweed pollen with much attention. Up to now, such pollen has not been included in the routine allergological
tests. In 1995 in some sites of northern Italy (Turin, Milan, Trieste), the concentration values of ragweed pollen were remarkable
(∼ 20–30 p/m3) and on the increase with respect to the previous years. This investigation aims at focusing the atmospheric concentration
trend on this new aeroallergen (Ambrosia sp.) in Italy from 1991 throughout 1995. 相似文献
4.
James T. Li Mark C. Swanson Roy J. Rando Patricia Wentz-Murtha Inna G. Ovsyannikova Ferran Morell Manuel Lopez Charles E. Reed 《Aerobiologia》1996,12(3):173-176
There have been reported epidemics of severe asthma in Barcelona, Spain, linked to a 10 kDa low molecular mass (LMM) allergen
from soybean hulls that became airborne during unloading of ships. As a preliminary probe of the potential for dispersion
of this allergen in USA cities, four automated air samplers were placed around a grain elevator in New Orleans and operated
continuously from May to October 1990. The allergen was extracted from the filters and immunochemically assayed for soybean
aeroallergen. On 31 separate days, the airborne allergen concentration in at least one of the samples was over 10 000 U/m3, similar to those observed in Barcelona on some epidemic days. Areas North and East of the elevator were most affected. Serologic
studies showed that of 50 asthmatics from New Orleans who were participants in an unrelated clinical study 4 or 8% demonstrated
elevated titers of IgE antibody to LMM soybean allergen. Only 1 of 475 control sera (half of which were also asthmatic) obtained
elsewhere in the US was positive for LMM soybean IgE antibody. Based on the findings in this study, there is a great possibility
that on some days there is enough soybean allergen in the air and a sufficient frequency of soybean aeroallergen RAST positive
asthmatics in New Orleans to warrant further investigation of the contribution of soybean aeroallergen to asthma around the
port of New Orleans.
Supported by NIAID # AI21255, Mayo Clinic and Foundation and Minnesota Lung Association 相似文献
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