ArticleRespiratory research2022
Black carbon content in airway macrophages is associated with increased severe exacerbations and worse COPD morbidity in SPIROMICS.
Article in Respiratory research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01969344 (Subpopulations and Intermediate Outcome Measures in COPD Study), which is not on this map. Cited by 8 papers, 1 of them a synthesis that pooled it.
What it found
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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.
Subpopulations and Intermediate Outcome Measures in COPD Study
Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 13 citations in OpenAlex.
- Biomarkers of the relationship of particulate matter exposure with the progression of chronic respiratory diseases.The Korean journal of internal medicine · 2024Pooled it
- Alveolar macrophage carbon is associated with COPD severity.ERJ open research · 2025Article
- Traffic-related air pollutant exposure and physical performance in the Adult Changes in Thought cohort.Environment international · 2025Article
- Black Carbon Air Pollution and Incident Mortality Among the Advance-Aged Adults in China: A Prospective Cohort Study.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025Article
- Advances on the Role of Lung Macrophages in the Pathogenesis of Chronic Obstructive Pulmonary Disease in the Era of Single-Cell Genomics.International journal of medical sciences · 2025Review
- Indoor air pollution and airway health.The Journal of allergy and clinical immunology · 2024Review
- Application of artificial intelligence in quantifying lung deposition dose of black carbon in people with exposure to ambient combustion particles.Journal of exposure science & environmental epidemiology · 2024Article
- Indoor Pollution and Lung Function Decline in Current and Former Smokers: SPIROMICS AIR.American journal of respiratory and critical care medicine · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
27 authors at 14 institutions in 1 country.
Funding
Abstract
backgroundAirway macrophages (AM), crucial for the immune response in chronic obstructive pulmonary disease (COPD), are exposed to environmental particulate matter (PM), which they retain in their cytoplasm as black carbon (BC). However, whether AM BC accurately reflects environmental PM
methodsWe analyzed induced sputum from participants at 7 of 12 sites SPIROMICS sites for AM BC content, which we related to exposures and to lung function and respiratory outcomes. Models were adjusted for batch (first vs. second), age, race (white vs. non-white), income (<$35,000, $35,000~$74,999, ≥$75,000, decline to answer), BMI, and use of long-acting beta-agonist/long-acting muscarinic antagonists, with sensitivity analysis performed with inclusion of urinary cotinine and lung function as covariates.
resultsOf 324 participants, 143 were current smokers and 201 had spirometric-confirmed COPD. Modeled indoor fine (< 2.5 μm in aerodynamic diameter) particulate matter (PM
conclusionIndoor PM
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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.