Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL Study

Background: While airborne pollen is widely recognized as a seasonal cause of sneezing and itchy eyes, its effects on pulmonary function, cardiovascular health, sleep quality, and cognitive performance are less well-established. It is likely that the public health impact of pollen may increase in th...

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Main Authors: Alexandra Bürgler, Sarah Glick, Karin Hartmann, Marloes Eeftens
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-06-01
Series:Frontiers in Public Health
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpubh.2021.689248/full
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author Alexandra Bürgler
Alexandra Bürgler
Sarah Glick
Sarah Glick
Karin Hartmann
Karin Hartmann
Marloes Eeftens
Marloes Eeftens
author_facet Alexandra Bürgler
Alexandra Bürgler
Sarah Glick
Sarah Glick
Karin Hartmann
Karin Hartmann
Marloes Eeftens
Marloes Eeftens
author_sort Alexandra Bürgler
collection DOAJ
description Background: While airborne pollen is widely recognized as a seasonal cause of sneezing and itchy eyes, its effects on pulmonary function, cardiovascular health, sleep quality, and cognitive performance are less well-established. It is likely that the public health impact of pollen may increase in the future due to a higher population prevalence of pollen sensitization as well as earlier, longer, and more intense pollen seasons, trends attributed to climate change. The effects of pollen on health outcomes have previously been studied through cross-sectional design or at two time points, namely preceding and within the period of pollen exposure. We are not aware of any observational study in adults that has analyzed the dose-response relationship between daily ambient pollen concentration and cardiovascular, pulmonary, cognitive, sleep, or quality of life outcomes. Many studies have relied on self-reported pollen allergy status rather than objectively confirming pollen sensitization. In addition, many studies lacked statistical power due to small sample sizes or were highly restrictive with their inclusion criteria, making the findings less transferable to the “real world.”Methods: The EPOCHAL study is an observational panel study which aims to relate ambient pollen concentration to six specific health domains: (1) pulmonary function and inflammation; (2) cardiovascular outcomes (blood pressure and heart rate variability); (3) cognitive performance; (4) sleep; (5) health-related quality of life (HRQoL); and (6) allergic rhinitis symptom severity. Our goal is to enroll 400 individuals with diverse allergen sensitization profiles. The six health domains will be assessed while ambient exposure to pollen of different plants naturally varies. Health data will be collected through six home nurse visits (at approximately weekly intervals) as well as 10 days of independent tracking of blood pressure, sleep, cognitive performance, HRQoL, and symptom severity by participants. Through repeated health assessments, we aim to uncover and characterize dose-response relationships between exposure to different species of pollen and numerous acute health effects, considering (non-)linearity, thresholds, plateaus and slopes.Conclusion: A gain of knowledge in pollen-health outcome relationships is critical to inform future public health policies and will ultimately lead toward better symptom forecasts and improved personalized prevention and treatment.
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spelling doaj.art-7b4183deaab94260957de6dbe68017af2022-12-21T22:45:12ZengFrontiers Media S.A.Frontiers in Public Health2296-25652021-06-01910.3389/fpubh.2021.689248689248Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL StudyAlexandra Bürgler0Alexandra Bürgler1Sarah Glick2Sarah Glick3Karin Hartmann4Karin Hartmann5Marloes Eeftens6Marloes Eeftens7Swiss Tropical and Public Health Institute, Basel, SwitzerlandUniversity of Basel, Basel, SwitzerlandSwiss Tropical and Public Health Institute, Basel, SwitzerlandUniversity of Basel, Basel, SwitzerlandDivision of Allergy, Department of Dermatology, University Hospital Basel, University of Basel, Basel, SwitzerlandDepartment of Biomedicine, University Hospital Basel, University of Basel, Basel, SwitzerlandSwiss Tropical and Public Health Institute, Basel, SwitzerlandUniversity of Basel, Basel, SwitzerlandBackground: While airborne pollen is widely recognized as a seasonal cause of sneezing and itchy eyes, its effects on pulmonary function, cardiovascular health, sleep quality, and cognitive performance are less well-established. It is likely that the public health impact of pollen may increase in the future due to a higher population prevalence of pollen sensitization as well as earlier, longer, and more intense pollen seasons, trends attributed to climate change. The effects of pollen on health outcomes have previously been studied through cross-sectional design or at two time points, namely preceding and within the period of pollen exposure. We are not aware of any observational study in adults that has analyzed the dose-response relationship between daily ambient pollen concentration and cardiovascular, pulmonary, cognitive, sleep, or quality of life outcomes. Many studies have relied on self-reported pollen allergy status rather than objectively confirming pollen sensitization. In addition, many studies lacked statistical power due to small sample sizes or were highly restrictive with their inclusion criteria, making the findings less transferable to the “real world.”Methods: The EPOCHAL study is an observational panel study which aims to relate ambient pollen concentration to six specific health domains: (1) pulmonary function and inflammation; (2) cardiovascular outcomes (blood pressure and heart rate variability); (3) cognitive performance; (4) sleep; (5) health-related quality of life (HRQoL); and (6) allergic rhinitis symptom severity. Our goal is to enroll 400 individuals with diverse allergen sensitization profiles. The six health domains will be assessed while ambient exposure to pollen of different plants naturally varies. Health data will be collected through six home nurse visits (at approximately weekly intervals) as well as 10 days of independent tracking of blood pressure, sleep, cognitive performance, HRQoL, and symptom severity by participants. Through repeated health assessments, we aim to uncover and characterize dose-response relationships between exposure to different species of pollen and numerous acute health effects, considering (non-)linearity, thresholds, plateaus and slopes.Conclusion: A gain of knowledge in pollen-health outcome relationships is critical to inform future public health policies and will ultimately lead toward better symptom forecasts and improved personalized prevention and treatment.https://www.frontiersin.org/articles/10.3389/fpubh.2021.689248/fullairborne pollenclimate changeallergic rhinitiscardiovascular healthpulmonary healthcognitive performance
spellingShingle Alexandra Bürgler
Alexandra Bürgler
Sarah Glick
Sarah Glick
Karin Hartmann
Karin Hartmann
Marloes Eeftens
Marloes Eeftens
Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL Study
Frontiers in Public Health
airborne pollen
climate change
allergic rhinitis
cardiovascular health
pulmonary health
cognitive performance
title Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL Study
title_full Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL Study
title_fullStr Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL Study
title_full_unstemmed Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL Study
title_short Rationale and Design of a Panel Study Investigating Six Health Effects of Airborne Pollen: The EPOCHAL Study
title_sort rationale and design of a panel study investigating six health effects of airborne pollen the epochal study
topic airborne pollen
climate change
allergic rhinitis
cardiovascular health
pulmonary health
cognitive performance
url https://www.frontiersin.org/articles/10.3389/fpubh.2021.689248/full
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