Trial reportCirculation2017
Particulate Matter Exposure and Stress Hormone Levels: A Randomized, Double-Blind, Crossover Trial of Air Purification.
Trial report in Circulation, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT02712333 (Health Effects of Indoor Air Filtration in Healthy Chinese Adults), which is not on this map. Cited by 202 papers, 9 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Health Effects of Indoor Air Filtration in Healthy Chinese Adults: An Intervention Study
Who cites it
202 citing papers in PubMed, 9 syntheses or guidelines pooled it, 515 citations in OpenAlex.
- The gut-brain axis mediates precocious puberty induced by environmentally relevant low-dose endocrine-disrupting chemical mixtures.Frontiers in endocrinology · 2025Pooled it
- Association between indoor air pollution and depression: a systematic review and meta-analysis of cohort studies.BMJ open · 2024Pooled it
- Effect of Air Pollution on Heart Failure: Systematic Review and Meta-Analysis.Environmental health perspectives · 2023Pooled it
- Effects of respirators to reduce fine particulate matter exposures on blood pressure and heart rate variability: A systematic review and meta-analysis.Environmental pollution (Barking, Essex : 1987) · 2022Pooled it
- Acute Effects of Particulate Matter on All-Cause Mortality in Urban, Rural, and Suburban Areas, Italy.International journal of environmental research and public health · 2021Pooled it
- Effectiveness of indoor air purification intervention in improving cardiovascular health: A systematic review and meta-analysis of randomized controlled trials.The Science of the total environment · 2021Pooled it
- Effects of Home Particulate Air Filtration on Blood Pressure: A Systematic Review.Hypertension (Dallas, Tex. : 1979) · 2020Pooled it
- Air Pollution (Particulate Matter) Exposure and Associations with Depression, Anxiety, Bipolar, Psychosis and Suicide Risk: A Systematic Review and Meta-Analysis.Environmental health perspectives · 2019Pooled it
- Associations of Exposure to Air Pollution with Insulin Resistance: A Systematic Review and Meta-Analysis.International journal of environmental research and public health · 2018Pooled it
- Electronic Cigarette Vaping with Nicotine Causes Increased Thrombogenicity and Impaired Microvascular Function in Healthy Volunteers: A Randomised Clinical Trial.Cardiovascular toxicology · 2023Trial
- Airway and systemic biomarkers of health effects after short-term exposure to indoor ultrafine particles from cooking and candles - A randomized controlled double-blind crossover study among mild asthmatic subjects.Particle and fibre toxicology · 2023Trial
- Randomized Cross-Over Study of In-Vehicle Cabin Air Filtration, Air Pollution Exposure, and Acute Changes to Heart Rate Variability, Saliva Cortisol, and Cognitive Function.Environmental science & technology · 2023Trial
- Effects of Air Purifiers on Patients with Allergic Rhinitis: a Multicenter, Randomized, Double-Blind, and Placebo-Controlled Study.Yonsei medical journal · 2020Trial
- Ultrafine particles and ozone perturb norepinephrine clearance rather than centrally generated sympathetic activity in humans.Scientific reports · 2019Trial
- Effect of Portable Air Filtration Systems on Personal Exposure to Fine Particulate Matter and Blood Pressure Among Residents in a Low-Income Senior Facility: A Randomized Clinical Trial.JAMA internal medicine · 2018Trial
- Modelling beyond additive risks: A framework for estimating the cascading burden of environmental exposure.Eco-Environment & Health · 2026Article
- Health Benefits of Air Purification: A Systematic Review.Environment & health (Washington, D.C.) · 2026Review
- Effect of Co-Exposure to Temperature and Fine Particulate Matter on Metabolomic and Immune Processes among Chinese Women of Childbearing Age.Environment & health (Washington, D.C.) · 2026Article
- Article
- Preconception and early-pregnancy exposure to ambient air pollution and trajectories of depressive symptoms during pregnancy.Environmental health : a global access science source · 2026Article
142 more citing papers are in PubMed but not listed here.
Corrections and comments
- Commented on by
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- Erratum issued
Authors and funding
11 authors at 6 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundExposure to ambient particulate matter (PM) is associated with a number of adverse health outcomes, but potential mechanisms are largely unknown. Metabolomics represents a powerful approach to study global metabolic changes in response to environmental exposures. We therefore conducted this study to investigate changes in serum metabolites in response to the reduction of PM exposure among healthy college students.
methodsWe conducted a randomized, double-blind crossover trial in 55 healthy college students in Shanghai, China. Real and sham air purifiers were placed in participants' dormitories in random order for 9 days with a 12-day washout period. Serum metabolites were quantified by using gas chromatography-mass spectrometry and ultrahigh performance liquid chromatography-mass spectrometry. Between-treatment differences in metabolites were examined using orthogonal partial least square-discriminant analysis and mixed-effect models. Secondary outcomes include blood pressure, corticotropin-releasing hormone, adrenocorticotropic hormone, insulin resistance, and biomarkers of oxidative stress and inflammation.
resultsThe average personal exposure to PMs with aerodynamic diameters ≤2.5 μm was 24.3 μg/m
conclusionsThis study suggests that higher PM may induce metabolic alterations that are consistent with activations of the hypothalamus-pituitary-adrenal and sympathetic-adrenal-medullary axes, adding potential mechanistic insights into the adverse health outcomes associated with PM. Furthermore, our study demonstrated short-term reductions in stress hormone following indoor air purification. CLINICAL
trial registrationURL: http://www.clinicaltrials.gov. Unique identifier: NCT02712333.
Indexed as
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.