Abstract
BACKGROUND: The link between exposure to ambient air pollution and mortality from cardiorespiratory diseases is well established, while evidence on neurodegenerative disorders including Parkinson's Disease (PD) remains limited.
OBJECTIVE: We examined the association between long-term exposure to ambient air pollution and PD mortality in seven European cohorts.
METHODS: Within the project 'Effects of Low-Level Air Pollution: A Study in Europe' (ELAPSE), we pooled data from seven cohorts among six European countries. Annual mean residential concentrations of fine particulate matter (PM 2.5), nitrogen dioxide (NO 2), black carbon (BC), and ozone (O 3), as well as 8 PM 2.5 components (copper, iron, potassium, nickel, sulphur, silicon, vanadium, zinc), for 2010 were estimated using Europe-wide hybrid land use regression models. PD mortality was defined as underlying cause of death being either PD, secondary Parkinsonism, or dementia in PD. We applied Cox proportional hazard models to investigate the associations between air pollution and PD mortality, adjusting for potential confounders.
RESULTS: Of 271,720 cohort participants, 381 died from PD during 19.7 years of follow-up. In single-pollutant analyses, we observed positive associations between PD mortality and PM 2.5 (hazard ratio per 5 µg/m 3: 1.25; 95% confidence interval: 1.01-1.55), NO 2 (1.13; 0.95-1.34 per 10 µg/m 3), and BC (1.12; 0.94-1.34 per 0.5 × 10 -5m -1), and a negative association with O 3 (0.74; 0.58-0.94 per 10 µg/m 3). Associations of PM 2.5, NO 2, and BC with PD mortality were linear without apparent lower thresholds. In two-pollutant models, associations with PM 2.5 remained robust when adjusted for NO 2 (1.24; 0.95-1.62) or BC (1.28; 0.96-1.71), whereas associations with NO 2 or BC attenuated to null. O 3 associations remained negative, but no longer statistically significant in models with PM 2.5. We detected suggestive positive associations with the potassium component of PM 2.5.
CONCLUSION: Long-term exposure to PM 2.5, at levels well below current EU air pollution limit values, may contribute to PD mortality.
| Original language | English |
|---|---|
| Article number | 107667 |
| Pages (from-to) | 1-10 |
| Number of pages | 10 |
| Journal | Environment International |
| Volume | 171 |
| Early online date | 30 Nov 2022 |
| DOIs | |
| Publication status | Published - Jan 2023 |
Bibliographical note
Publisher Copyright:© 2022 The Authors
Funding
This study was supported by the Health Effects Institute (HEI) (#4954-RFA14-3/16-5-3) and the Novo Nordisk Foundation Challenge Programme [NNF17OC0027812]. The HEI is an organization jointly funded by the United States Environmental Protection Agency (EPA) (Assistance Award No. R-82811201) and certain motor vehicle and engine manufacturers. The contents of this article do not necessarily reflect the views of HEI, or its sponsors, nor do they necessarily reflect the views and policies of the EPA or motor vehicle and engine manufacturers. While HEI has reviewed and approved the study design, it was not involved in data collection and analysis, decision to publish, or preparation of the manuscript. We give thanks to all participants in the pooled cohort studies and the respective study teams of the ELAPSE project for their hard work and effort. Accordingly, we especially thank Marjan Tewis for conducting data management tasks when creating the pooled cohort database. In addition, we specifically thank the National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands, for their contribution to the ELAPSE project. SALT and TwinGene are sub-studies of The Swedish Twin Registry (STR), which is managed by Karolinska Institutet and receives additional funding through the Swedish Research Council (No. 2017-00641). The KORA study was initiated and financed by the Helmholtz Zentrum München – German Research Center for Environmental Health, which is funded by the German Federal Ministry of Education and Research (BMBF) and by the State of Bavaria. The Novo Nordisk Foundation, the Swedish Research Council, the German Federal Ministry of Education and Research, and the State of Bavaria were not involved in the study design, data collection and analysis, decision to publish, or preparation of the manuscript. This study was supported by the Health Effects Institute (HEI) (#4954-RFA14-3/16-5-3) and the Novo Nordisk Foundation Challenge Programme [NNF17OC0027812]. The HEI is an organization jointly funded by the United States Environmental Protection Agency (EPA) (Assistance Award No. R-82811201) and certain motor vehicle and engine manufacturers. The contents of this article do not necessarily reflect the views of HEI, or its sponsors, nor do they necessarily reflect the views and policies of the EPA or motor vehicle and engine manufacturers. While HEI has reviewed and approved the study design, it was not involved in data collection and analysis, decision to publish, or preparation of the manuscript. We give thanks to all participants in the pooled cohort studies and the respective study teams of the ELAPSE project for their hard work and effort. Accordingly, we especially thank Marjan Tewis for conducting data management tasks when creating the pooled cohort database. In addition, we specifically thank the National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands, for their contribution to the ELAPSE project. SALT and TwinGene are sub-studies of The Swedish Twin Registry (STR), which is managed by Karolinska Institutet and receives additional funding through the Swedish Research Council (No. 2017-00641). The KORA study was initiated and financed by the Helmholtz Zentrum München – German Research Center for Environmental Health, which is funded by the German Federal Ministry of Education and Research (BMBF) and by the State of Bavaria. The Novo Nordisk Foundation, the Swedish Research Council, the German Federal Ministry of Education and Research, and the State of Bavaria were not involved in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.
| Funders | Funder number |
|---|---|
| National Institute for Public Health and the Environment | |
| Novo Nordisk Foundation Challenge Programme | NNF17OC0027812 |
| U.S. Environmental Protection Agency | R-82811201 |
| Health Effects Institute | 4954-RFA14-3/16-5-3 |
| Bundesministerium für Bildung und Forschung | |
| Karolinska Institutet | |
| Vetenskapsrådet | 2017-00641 |
| Rijksinstituut voor Volksgezondheid en Milieu | |
| Novo Nordisk Fonden | |
| Deutsches Forschungszentrum für Gesundheit und Umwelt, Helmholtz Zentrum München |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 15 Life on Land
Keywords
- Adults
- Air pollution
- Long-term exposure
- Low-level exposure
- Parkinson's Disease
- Pooled-cohort study
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