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Air pollution exposure and vascular endothelial function: a systematic review and meta-analysis

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Abstract

Vascular endothelial dysfunction is an early stage to cardiovascular diseases (CVDs), but whether air pollution exposure has an effect on it remains unknown. We conducted a systematic review and meta-analysis to summarize epidemiological evidence between air pollution and endothelial dysfunction. We searched the database of PubMed, EMBASE, the Cochrane Library, and Web of Science up to November 10, 2022. Fixed and random effect models were used to pool the effect change or percent change (% change) and 95% confidence interval (95% CI) of vascular function associated with particulate matter (PM) and gaseous pollutants. I2 statistics, funnel plot, and Egger’s test were used to evaluate heterogeneity and publication bias. There were 34 articles included in systematic review, and 25 studies included in meta-analysis. For each 10 µg/m3 increment in short-term PM2.5 exposure, augmentation index (AIx) and pulse wave velocity (PWV) increased by 2.73% (95% CI: 1.89%, 3.57%) and 0.56% (95% CI: 0.22%, 0.89%), and flow-mediated dilation (FMD) decreased by 0.17% (95% CI: − 0.33%, − 0.00%). For each 10 µg/m3 increment in long-term PM2.5 exposure, FMD decreased by 0.99% (95% CI: − 1.41%, − 0.57%). The associations between remaining pollutants and outcomes were not statistically significant. The effect of short-term PM2.5 exposure on FMD change was stronger in population with younger age, lower female proportion, higher mean body mass index and higher PM2.5 exposure. Cardiac or vasoactive medication might attenuate this effect. Our study provides evidence that PM2.5 exposure had adverse impact on vascular endothelial function, indicating the importance of air quality improvement for early CVD prevention.

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All data generated or analyzed during this study are included in this published article.

Abbreviations

DALY:

Disability-adjusted life year

CVD:

Cardiovascular disease

PM:

Particulate matter

PM2.5 :

Particulate matters of aerodynamic diameter ≤ 2.5 μm

PM10 :

Particulate matters of aerodynamic diameter ≤ 10 μm

NO2 :

Nitrogen dioxide

O3 :

Ozone

SO2 :

Sulfur dioxide

FMD:

Flow-mediated dilation

RHI:

Reactive hyperemia index

NO:

Nitric oxide

CO:

Carbon monoxide

PWV:

Pulse wave velocity

AIx:

Augmentation index

PRISMA:

Preferred Reporting Items for Systematic reviews and Meta-Analysis;

95% CI:

95% Confidence interval

BMI:

Body mass index

NOx:

Nitrogen oxides

NOS:

Newcastle–Ottawa Scale

AHRQ:

Agency for Healthcare Research and Quality

GRADE:

Grading of Recommendations Assessment, Development and Evaluation

ROS:

Reactive oxygen species

ICAM-1:

Intercellular cell adhesion molecule-1

vWF:

Von Willebrand factor

VEGF:

Vascular endothelial growth factors

8-OHdG:

8-Hydroxy-2-deoxyguanosine

SOD:

Superoxide dismutase

GPx:

Glutathione peroxidase

eNOS:

Endothelial nitric oxide synthase

TLR:

Toll-like receptor

References

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Acknowledgements

The authors acknowledge Junfeng Jim Zhang, Drew B Day, and Jianbang Xiang from Duke University, and Aruni Bhatnagar and Daniel W Riggs, from the University of Louisville for their kind help to our data requirement.

Funding

This work was supported by the Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences (Nos. 2021-I2M-1–010, 2017-I2M-1–004), the National Key R&D Program of China (Nos. 2017YFC0211703, 2018YFE0115300), and National Natural Science Foundation of China (Nos. 91643208, 82073658).

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Authors

Contributions

J.Li. conducted the conception of the meta-analysis, literature review, prepared the datasets, interpreted the results, and drafted and finalized the manuscript; F.Liu. contributed to the conception of the meta-analysis, literature review, dataset preparation, results interpretation, and assisted in drafting the manuscript; F.Liang. contributed to the interpreted the findings, and assisted in drafting the manuscript; Y.Yang. contributed to the literature review and prepared the datasets; X.Lu contributed to the drafting the manuscript and supervision; D.Gu contributed to the drafting the manuscript and supervision. All authors have read and approved the manuscript.

Corresponding author

Correspondence to Dongfeng Gu.

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Responsible Editor: Lotfi Aleya

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Li, J., Liu, F., Liang, F. et al. Air pollution exposure and vascular endothelial function: a systematic review and meta-analysis. Environ Sci Pollut Res 30, 28525–28549 (2023). https://doi.org/10.1007/s11356-023-25156-9

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  • DOI: https://doi.org/10.1007/s11356-023-25156-9

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