ArticleRespiratory research2018
Comparative analysis of COPD associated with tobacco smoking, biomass smoke exposure or both.
Article in Respiratory research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 37 papers, 1 of them a synthesis 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
37 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 citations in OpenAlex.
- Fibrinogen is a promising biomarker for chronic obstructive pulmonary disease: evidence from a meta-analysis.Bioscience reports · 2020Pooled it
- Is atopy a risk indicator of chronic obstructive pulmonary disease in dairy farmers?Respiratory research · 2019Trial
- Oxidative Stress and Inflammatory Cytokines as Drivers of Cardiac Remodeling in COPD Patients.Antioxidants (Basel, Switzerland) · 2026Article
- Cerebral oxygen extraction fraction as a physiological biomarker in vascular cognitive impairment: A study in older adults enriched for small vessel diseases.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Pathogenesis and Phenotypes of Pulmonary Vascular Disease in COPD: A Consensus Statement From the Pulmonary Vascular Research Institute's Innovative Drug Development Initiative - PH Group 3 Workstream.Pulmonary circulation · 2026Article
- The lung-muscle axis in COPD: a conceptual framework integrating evidence, mechanisms, and therapeutic perspectives.Frontiers in immunology · 2026Review
- Eosinophilic cytokines and small airway dysfunction in women with COPD: correlation with exposure to biomass smoke versus tobacco smoking.IJTLD open · 2025Article
- Effectiveness of ICS/LABA and LAMA/LABA in COPD due to biomass.ERJ open research · 2024Article
- Article
- Chronic obstructive pulmonary disease related to wood smoke and impact of the combined exposure to tobacco.IJTLD open · 2024Article
- Altered levels of IFN-γ, IL-4, and IL-5 depend on theFrontiers in immunology · 2024Article
- Endothelial to mesenchymal transition is an active process in smokers and patients with early COPD contributing to pulmonary arterial pathology.ERJ open research · 2024Article
- Sputum Biomarkers in Wood and Tobacco Smoke Etiotypes of Chronic Obstructive Pulmonary Disease.International journal of chronic obstructive pulmonary disease · 2024Article
- Luteolin suppresses inflammation and oxidative stress in chronic obstructive pulmonary disease through inhibition of the NOX4-mediated NF-κB signaling pathway.Immunity, inflammation and disease · 2023Article
- Article
- Article
- A Proposal to Differentiate ACO, Asthma and COPD in Vietnam.Journal of personalized medicine · 2022Article
- Review
- Arterial remodelling in smokers and in patients with small airway disease and COPD: implications for lung physiology and early origins of pulmonary hypertension.ERJ open research · 2022Article
- Article
Corrections and comments
- Erratum issued
Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
Abstract
backgroundExposure to noxious gases and particles contained in both tobacco smoking (TS) and biomass smoke (BS) are well recognized environmental risk factors for chronic obstructive pulmonary disease (COPD). COPD is characterized by an abnormal inflammatory response, both in the pulmonary and systemic compartments. The differential effects of TS, BS or their combined exposure have not been well characterized yet. This study sought to compare the lung function characteristics and systemic inflammatory response in COPD patients exposed to TS, BS or their combination.
methodsSociodemographic, clinical and lung functional parameters were compared across 49 COPD patients with a history of smoking and no BS exposure (TS COPD), 31 never-smoker COPD patients with BS exposure (BS COPD), 46 COPD patients with a combined exposure (TS + BS COPD) and 52 healthy controls (HC) who have never been exposed neither to TS or BS. Blood cell counts, C-reactive protein (CRP), fibrinogen and immunoglobulin E (IgE) levels were quantified in all four groups.
resultsTS + BS COPD patients exhibited significantly lower oxygen saturation than the rest of groups (p < 0.01). Spirometry and diffusing capacity were significantly higher in BS than in TS or TS + BS patients. CRP levels were significantly higher in TS COPD patients than in BS COPD group (p < 0.05), whereas fibrinogen was raised in COPD patients with a history of smoking (TS and TS + BS) when compared to control subjects (p < 0.01). Finally, COPD patients with BS exposure (BS and BS + TS groups) showed higher IgE levels than TS and HC (p < 0.05).
conclusionsThere are significant physiological and inflammatory differences between COPD patients with TS, BS and TS + BS exposures. The latter had worse blood oxygenation, whereas the raised levels of IgE in BS exposed patients suggests a differential Th2 systemic inflammatory pattern triggered by this pollutant.
Indexed as
Identifiers
What OpenQuestion holds
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.