Climate Change and Allergic Airway Disease: Observational ... · Henry J. Mayer, Ph.D., (RU)...
Transcript of Climate Change and Allergic Airway Disease: Observational ... · Henry J. Mayer, Ph.D., (RU)...
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Climate Change and Allergic Airway Disease: Observational, Laboratory, and Modeling
Studies of the Impacts of Climate Change on Allergic Airway Disease
PI: Leonard Bielory, M.D.Rutgers University
EPA Grant Number: R834547
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US EPA STAR Program RD83454701
US EPA STAR Program RD83454701
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US EPA STAR Program RD83454701
Climate Change and Allergic Airway Disease STAR Areas of Interest
Area 1
Area 2
Scenarios for studying the effects of climatic change on biogenic emissions can be developed Viability of allergenic
particles can be incorporated Better understanding of the
allergenic potential of the atmosphere and interaction with other pollutants
US EPA STAR Program RD83454701
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US EPA STAR Program RD83454701
• Disciplines
• Botany
• Meteorology
• Population
• Medicine
• Allergy & Immunology
Climate Change and Allergic Airway Disease Multidisciplinary Team
• Techniques
• Modeling
• Chamber Studies
• Molecular genetics
• Immunoassays
• Skin testing
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US EPA STAR Program RD83454701
Climate Change and Allergic Airway DiseaseLeonard Bielory, M.D. (RU)
Director, STARx Allergy and Asthma Center, (Medicine, Pediatrics and Ophthalmology);
Chairman, NJDEP Clean Air Council; Visiting Center for Environmental Prediction
Stacy Bonos, Ph.D. (RU)
Assistant Professor of Turfgrass Breeding in Rutgers Dept. of Plant Biology and Pathology
P. G. Georgopoulos, Ph.D. (UMDNJ - RU)
Professor of Environmental and Occupational Medicine UMDNJ-RWJ Medical School;
Director, Computational Chemodynamics Laboratory, EOHSI; Co-Director, Center for Exposure and Risk Modeling (CERM) EOHSI
Henry J. Mayer, Ph.D., (RU)
Faculty Fellow, E.J. Bloustein School of Planning & Public Policy of Rutgers
Executive Director, National Center for Neighborhood & Brownfields Redevelopment
Alan Robock, Ph.D. (RU)
Distinguished Professor of Atmospheric Science in Rutgers Department of Environmental Sciences
Associate Director of the Center for Environmental Prediction
Lee Simon (RU)
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US EPA STAR Program RD83454701
Climate Change and Allergic Airway Disease
US EPA STAR Program RD83454701
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US EPA STAR Program RD83454701
Climate Change and Allergic Airway Disease
US EPA STAR Program RD83454701
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US EPA STAR Program RD83454701
EPA Project Tasks
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US EPA STAR Program RD83454701US EPA STAR Program RD83454701
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US EPA STAR Program RD83454701US EPA STAR Program RD83454701
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US EPA STAR Program RD83454701
US EPA STAR Program RD83454701
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Comparative evaluation of pollen dispersion modeling using the new CMAQ-pollen module and HYSPLIT for a hypothetical “single-cell” emissions case
Comparison of results from the CMAQ-pollen modules with the HYSPLIT model. Comparison was done by assuming a “single cell” of emissions of pollen.
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US EPA STAR Program RD83454701
US EPA STAR Program RD83454701
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US EPA STAR Program RD83454701
Adapted from Knowlton, et al. 2007. Sneezing and Wheezing: How Global Warming Could Increase Ragweed Allergies, Air Pollution, and Asthma. Natural Resources Defense Council. http://www.nrdc.org/globalwarming/sneezing/contents.asp
Ozone and Ragweed co-exposures in the Continental U.S.
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US EPA STAR Program RD83454701
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AAAAI National Allergy Bureau n =74
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Local pollen counts at – Newark, NJ: Measurements and model estimates
Pollen counts at Newark, NJRotorod device at the roof sampling every day (except weekends, holidays)Samples microscopically counted and classified (trees, grasses, weeds, spores)Extrapolated to atmospheric concentration (grains per cubic meter)
(Source: STARx Asthma and Allergy Research Center and Rutgers University Center for Environmental Prediction)
Total tree pollen counts
1-layer CMAQ simulation: All birch pollen emissions allocated to first vertical layer (ground - 20 m). 2-layer CMAQ simulation: 80% of emissions allocated to first layer, and 20% to the second layer (20 - 50 m). Ragweed simulation: all emissions were allocated to the first layer. Data are from AAAAI National Allergy Bureau
Birch
Ragweed
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Pollen model results: Birch emission flux and airborne concentrations
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Pollen Trends in New Jersey AAAAI 2009
p = 0.65
The average duration of Ragweed season has increased
from 90 days to 94 daysover the last 18 years
The average duration of Ragweed season has increased
from 90 days to 94 daysover the last 18 years
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Pollen Trends in New Jersey AAAAI 2009
p < 0.001
p < 0.001
The total number of Ragweedgrains counted each seasonhas decreased over the last
18 years
The total number of Ragweedgrains counted each seasonhas decreased over the last
18 years
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US EPA STAR Program RD83454701
US EPA STAR Program RD83454701
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A generalized seven-step population exposure analysis framework for co-occurring air pollutants and pollen
The MENTOR framework has been designed for assessing inhalation exposures and doses for multiple airborne contaminants including bioaerosols and co-occurring air photochemical air pollutants.
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Modules for simulation of pollen emissions and transport
CMAQ has been adapted for simulating the transport of pollen. Schematic of the components of and linkages in CMAQ are shown.
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Structure of the overall exposure modeling system for studying co-occurring pollen and gaseous contaminants such
as ozone under a changing climate
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US EPA STAR Program RD83454701
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Pollen Quantity and CO2
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Pollen Phenology• Pollen increases with increases with CO2 and/or T.
– Ragweed pollen has increased from pre-industrial to current or future CO2 levels
– doubling of greenhouse CO2 (350 vs 700 microl/L) results in 61% increase
• Wayne, P., S. Foster, et al. (2002). "Production of allergenic pollen by ragweed (Ambrosia artemisiifolia L.) is increased in CO2-enriched atmospheres." Ann Allergy Asthma Immunol 88(3): 279-82.
• Examination of ragweed plants in “realistic” urban versus rural areas demonstrated – faster growth– earlier flowering– increased above-ground biomass – increased ragweed pollen at the urban locations than at rural locations
• Ziska, L. H., D. E. Gebhard, et al. (2003). "Cities as harbingers of climate change: common ragweed, urbanization, and public health." JACI 111(2): 290-5.
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Pollen Allergenicity & Pollution
Suarez-Cervera, M., T. Castells, et al. (2008). "Effects of air pollution on cup a 3 allergen in Cupressus arizonica pollen grains." Ann Allergy Asthma Immunol 101(1): 57-66.
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Species Long vs. Short Day Gene
Perennial ryegrass (Griffiths et al., 1991) (Lolium perenne) Long Lol p1
Timothy grass (Bufe et al., 1995) (Phleum pretense) Long Phl p5
Kentucky bluegrass (Olsen et al., 1991) (Poa pratensis) Long Poa p5
Bermuda grass (Au et al., 2002) (Cynodon dactylon) Short Cyn D1
Ragweed (Rafner et al., 1991) (Ambrosia artemissiifolia) Short Amb a1
Mugwort (Arilla, et al., 2007) (Artemisia annua) Short Art v2
Cloned Allergenicity Genes from Grasses and Weeds
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US EPA STAR Program RD83454701
Is this the solution?Is this the solution?