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Updated: Aug 6, 2026
05:31
Noninvasive Sampling of Mucosal Lining Fluid for the Quantification of In Vivo Upper Airway Immune-mediator Levels
Published on: August 7, 2017
Immune response as a modifier linking phthalate exposure to lung function decline: Results from a longitudinal study
Wei-Chi Wang1, Yuan-Ting C Lo1, Hsiu-Ying Ku1
1School of Public Health, National Defense Medical University, Taiwan.
Environmental Pollution (Barking, Essex : 1987)
|July 16, 2026
Summary
Phthalate exposure may impact immune cells and lung function, with specific phthalates linked to reduced lung capacity. Immune responses might worsen phthalate-related lung impairment, warranting further research.
Area of Science:
- Environmental Health
- Immunology
- Pulmonary Medicine
Background:
- Experimental studies suggest phthalate exposure affects immune function, potentially impacting lung function.
- Epidemiological evidence linking phthalate exposure, immune markers, and lung function is limited.
Purpose of the Study:
- To investigate associations between phthalate metabolites, immune cell biomarkers, and lung function.
- To explore potential mediation and interaction effects between these factors.
Main Methods:
- Cross-sectional study of 759 individuals from the Taiwan Biobank cohort.
- Quantification of 11 urinary phthalate metabolites and estimation of immune cell biomarkers via DNA methylation.
- Lung function assessed using spirometry (FVC, FEV1, FEV1/FVC ratio); statistical analysis using generalized linear models and quantile g-computation.
Main Results:
- Monobenzyl phthalate (MEP) associated with increased granulocytes; mono(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) associated with increased CD4+ T cells.
- MEHHP and monoethyl-5-carboxymethyl-phthalate (MECPP) inversely associated with FEV1/FVC ratio.
- Mono(2-ethyl-5-oxohexyl) phthalate (MEOHP) negatively associated with predicted FEV1 and FEV1/FVC ratio; interactions noted between specific phthalates and CD8+ T cells on FEV1/FVC.
Conclusions:
- Specific phthalate exposures and elevated immune cell levels correlate with impaired lung function.
- Increased immune responses may exacerbate phthalate-associated lung function decline.
- Further longitudinal studies are needed to clarify directionality and biological mechanisms.
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