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Larson PS, Steiner AL, Bennion E, Baptist AP, O'Neill MS, Gronlund CJ. Pollen effects in a changing climate: Ragweed pollen exposure and sleepiness in immunotherapy patients of a Southeastern Michigan allergy clinic. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2024:10.1007/s00484-024-02737-y. [PMID: 39141134 DOI: 10.1007/s00484-024-02737-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/27/2024] [Accepted: 07/10/2024] [Indexed: 08/15/2024]
Abstract
Allergic rhino-conjunctivitis (AR) is a globally relevant health disorder characterized by sneezing, rhinorrhea and sleep disturbance. Ragweed (Ambrosia artemisiifolia) is a plant common to North America and an important allergen. Coarse methods of measuring airborne pollen counts are used to predict seasonal allergy symptoms. This research used a longitudinal study design with a novel, model-based raster of predicted pollen counts to test associations with self-reported symptoms of AR collected from patients receiving immunotherapy for pollen allergies at an allergy clinic. Researchers visited a clinic six times over three weeks. Immunotherapy patients were asked to fill out a brief intake survey on allergic and symptomatic profiles, daytime sleepiness, housing quality, and demographics. Participants responded to a daily, emailed survey on sleepiness and asthma symptoms for 21 days. Using the date and location of responses, ragweed pollen counts were extracted from a prognostic, model based raster (25km pixels). Lag associations of pollen counts with sleepiness were tested using a logistic regression model , adjusted for housing and demographic characteristics, in a distributed lag non-linear model (DLNM) framework. 49 people participated in the study. 26 (52%) were female. The mean age was 37.9 years. Asthma/allergy symptoms were not associated with ragweed pollen but sleepiness was highest two days after exposure (Estimate: 0.33 [0.04,0.62]). Subjects traveled widely during the study period. Intense exposures to ragweed pollen may be associated with daytime sleepiness within small exposure windows. Model-based predicted pollen counts could be used to study health impacts of pollen in people with disease severe enough to receive immunotherapy. Daytime sleepiness can affect productivity and injury risk, and pollen season length and allergenicity may be increasing with climate change. Thus our results may have important implications for population health.
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Affiliation(s)
- Peter S Larson
- Institute for Social Research, Survey Research Center, University of Michigan, 426 Thompson St., Ann Arbor, 48104, MI, USA.
- Department of Epidemiology, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, 48109, MI, USA.
| | - Allison L Steiner
- Department of Climate and Space Sciences and Engineering, School of Engineering, University of Michigan, 2455 Hayward Street, Ann Arbor, 48109-2143, MI, USA
| | - Erica Bennion
- Department of Epidemiology, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, 48109, MI, USA
| | - Alan P Baptist
- Department of Epidemiology, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, 48109, MI, USA
- Department of Internal Medicine, Henry Ford Health and Michigan State University, One Ford Place, Detroit, 48202, MI, USA
| | - Marie S O'Neill
- Department of Epidemiology, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, 48109, MI, USA
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, 48109, MI, USA
| | - Carina J Gronlund
- Institute for Social Research, Survey Research Center, University of Michigan, 426 Thompson St., Ann Arbor, 48104, MI, USA
- Department of Epidemiology, School of Public Health, University of Michigan, 1415 Washington Heights, Ann Arbor, 48109, MI, USA
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Liu SH, Kazemi S, Karrer G, Bellaire A, Weckwerth W, Damkjaer J, Hoffmann O, Epstein MM. Influence of the environment on ragweed pollen and their sensitizing capacity in a mouse model of allergic lung inflammation. FRONTIERS IN ALLERGY 2022; 3:854038. [PMID: 35991309 PMCID: PMC9390857 DOI: 10.3389/falgy.2022.854038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 07/01/2022] [Indexed: 11/23/2022] Open
Abstract
Common ragweed (Ambrosia artemisiifolia) is an invasive plant with allergenic pollen. Due to environmental changes, ragweed pollen (RWP) airborne concentrations are predicted to quadruple in Europe by 2050 and more than double allergic sensitization of Europeans by 2060. We developed an experimental RWP model of allergy in BALB/c mice to evaluate how the number of RWP and how RWP collected from different geographical environments influence disease. We administered RWP six times over 3 weeks intranasally to the mice and then evaluated disease parameters 72 h later or allowed the mice to recover for at least 90 days before rechallenging them with RWP to elicit a disease relapse. Doses over 300 pollen grains induced lung eosinophilia. Higher doses of 3,000 and 30,000 pollen grains increased both eosinophils and neutrophils and induced disease relapses. RWP harvested from diverse geographical regions induced a spectrum of allergic lung disease from mild inflammation to moderate eosinophilic and severe mixed eosinophilic-neutrophilic lung infiltrates. After a recovery period, mice rechallenged with pollen developed a robust disease relapse. We found no correlation between Amb a 1 content, the major immunodominant allergen, endotoxin content, or RWP structure with disease severity. These results demonstrate that there is an environmental impact on RWP with clinical consequences that may underlie the increasing sensitization rates and the severity of pollen-induced disease exacerbation in patients. The multitude of diverse environmental factors governing distinctive patterns of disease induced by RWP remains unclear. Further studies are necessary to elucidate how the environment influences the complex interaction between RWP and human health.
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Affiliation(s)
- Shu-Hua Liu
- Laboratory of Experimental Allergy, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Sahar Kazemi
- Laboratory of Experimental Allergy, Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Gerhard Karrer
- Institute of Botany, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Anke Bellaire
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
| | - Wolfram Weckwerth
- Department of Functional and Evolutionary Ecology, Molecular Systems Biology, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
| | | | - Oskar Hoffmann
- Division of Pharmacology & Toxicology, Department of Pharmaceutical Sciences, University of Vienna, Vienna, Austria
| | - Michelle M. Epstein
- Laboratory of Experimental Allergy, Department of Dermatology, Medical University of Vienna, Vienna, Austria
- *Correspondence: Michelle M. Epstein
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Jones NR, Agnew M, Banic I, Grossi CM, Colón-González FJ, Plavec D, Goodess CM, Epstein MM, Turkalj M, Lake IR. Ragweed pollen and allergic symptoms in children: Results from a three-year longitudinal study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 683:240-248. [PMID: 31132703 DOI: 10.1016/j.scitotenv.2019.05.284] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/09/2019] [Accepted: 05/19/2019] [Indexed: 06/09/2023]
Abstract
Common ragweed is a highly allergenic invasive species in Europe, expected to become widespread under climate change. Allergy to ragweed manifests as eye, nasal and lung symptoms, and children may retain these throughout life. The dose-response relationship between symptoms and pollen concentrations is unclear. We undertook a longitudinal study, assessing the association between ragweed pollen concentration and allergic eye, nasal and lung symptoms in children living under a range of ragweed pollen concentrations in Croatia. Over three years, 85 children completed daily diaries, detailing allergic symptoms alongside daily location, activities and medication, resulting in 10,130 individual daily entries. The daily ragweed pollen concentration for the children's locations was obtained, alongside daily weather and air pollution. Parents completed a home/lifestyle/medical questionnaire. Generalised Additive Mixed Models established the relationship between pollen concentrations and symptoms, alongside other covariates. Eye symptoms were associated with mean daily pollen concentration over four days (day of symptoms plus 3 previous days); 61 grains/m3/day (95%CI: 45, 100) was the threshold at which 50% of children reported symptoms. Nasal symptoms were associated with mean daily pollen concentration over 12 days (day of symptoms plus 11 previous days); the threshold for 50% of children reporting symptoms was 40 grains/m3/day (95%CI: 24, 87). Lung symptoms showed a relationship with mean daily pollen concentration over 19 days (day of symptoms plus 18 previous days), with a threshold of 71 grains/m3/day (95%CI: 59, 88). Taking medication on the day of symptoms showed higher odds, suggesting responsive behaviour. Taking medication on the day prior to symptoms showed lower odds of reporting, indicating preventative behaviour. Different symptoms in children demonstrate varying dose-response relationships with ragweed pollen concentrations. Each symptom type responded to pollen exposure over different time periods. Using medication prior to symptoms can reduce symptom presence. These findings can be used to better manage paediatric ragweed allergy symptoms.
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Affiliation(s)
- Natalia R Jones
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
| | - Maureen Agnew
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
| | - Ivana Banic
- Srebrnjak Children's Hospital, Srebrnjak 100, 10000 Zagreb, Croatia.
| | - Carlota M Grossi
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
| | | | - Davor Plavec
- Srebrnjak Children's Hospital, Srebrnjak 100, 10000 Zagreb, Croatia; Faculty of Medicine, J.J. Strossmayer University of Osijek, J. Huttlera 4, 31000 Osijek, Croatia.
| | - Clare M Goodess
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
| | - Michelle M Epstein
- Department of Dermatology, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria.
| | - Mirjana Turkalj
- Srebrnjak Children's Hospital, Srebrnjak 100, 10000 Zagreb, Croatia; Faculty of Medicine, J.J. Strossmayer University of Osijek, J. Huttlera 4, 31000 Osijek, Croatia; Catholic University of Croatia, Ilica 242, 10000 Zagreb, Croatia.
| | - Iain R Lake
- School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
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The Prevalence of Allergic Rhinitis toAmbrosia Elatior in OlteniaArea and the Association with Allergic Conjunctivitis or Asthma. CURRENT HEALTH SCIENCES JOURNAL 2019; 45:66-72. [PMID: 31297265 PMCID: PMC6592663 DOI: 10.12865/chsj.45.01.09] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 03/10/2019] [Indexed: 12/13/2022]
Abstract
Introduction-Ambrosia elatior pollen sensitivity can lead to respiratory diseases such as rhinitis, asthma and allergic conjunctivitis. Ambrosia is quite an important source of pollen and it is thought to be an invasive plant. Sensitivity prevalence to Ambrosia pollen varies from one country to another. The aim of the present study was to assess the prevalence of pollen allergic rhinitis caused by Ambrosia elatior in the Oltenia area located in the south west part of Romania. Material and method - The study was carried on 1004 patients with allergic rhinitis. All the patients experienced symptoms of allergic rhinitis, associated with /without conjunctivitis or asthma, and positive skin tests to aeroallergens. Results - In the group under study, 48,80% of the cases are sensitized to Ambrosia elatior pollen. The number of patients with allergic rhinitis and pollen sensitivity to Ambrosia is higher in 2014-2015 compared to 2012, i.e. 282 cases and the symptoms are moderate-severe. Conclusions - Ambrosia elatior pollen has become a major source of aeroallergen in Oltenia area.
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