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PM10-related DNA damage, cytokinetic defects, and cell death in COPD patients from Chiang Dao district, Chiang Mai, Thailand

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Abstract

Exposure to PM10 generated by biomass burning may reduce lung function and induce cytogenetic effects, especially in chronic obstructive pulmonary disease patients. This study investigated the frequency of DNA-damaged cells, cells with cytokinetic defect, and different types of cell death using a buccal micronucleus cytome assay. The correlations between each biomarker and lung function were investigated. The changes in these biomarkers associated with high pollutant levels (PM10 > 50 μg/m3) and low pollutant levels (PM10 < 50 μg/m3) were evaluated to explore whether PM10 exposure induced genotoxic damages and cytokinetic defects in COPD patients when the daily average PM10 concentration reached above 50 μg/m3. Fifty-eight COPD patients and 26 healthy subjects living in Chiang Dao district, Chiang Mai, Thailand, were recruited in this study. The results revealed that buccal cells with micronuclei (high vs low 1.09 ± 1.95 vs 0.29 ± 0.64 in COPD patients) and binucleated cells (high vs low 11.43 ± 18.68 vs 1.60 ± 1.31 and 7.77 ± 12.76 vs 1.00 ± 1.17 in COPD and healthy subjects, respectively) observed during the high pollutant period were more frequent than in the low pollutant period. Moreover, exposure to PM10 increased the risk of micronucleus induction in COPD patients 295.23-fold.

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Acknowledgments

The authors are grateful to Dr. Dale E. Taneyhill for proofreading the English.

Funding

This research was supported by the Thailand Research Fund (TRF), Grant No. MRG5980190 and Faculty of Medicine, Chiang Mai University Research Fund, Grant No. 013/2560 and Grant No. 067/2559. The funding body had no role in the design and execution of this study or interpretation of the data.

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Authors and Affiliations

Authors

Contributions

KW, CP, and TP conceived and planned the study. KW, SM, NP and WC contributed to sample collection and lung function measurement. KW and SM carried out the BMCyt assay. KW interpreted the results and performed data analysis. KW and RP performed statistical analysis. KW wrote the manuscript in consultation with CP, TP and WC.

Corresponding author

Correspondence to Chaicharn Pothirat.

Ethics declarations

This study was carried out in compliance with the Code of Ethics of the World Medical Association (Declaration of Helsinki) and approved by the Ethics Committee of the Faculty of Medicine, Chiang Mai University, Thailand.

Conflict of interest

The authors declare that they have no conflict of interest.

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Responsible editor: Philippe Garrigues

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Wunnapuk, K., Pothirat, C., Manokeaw, S. et al. PM10-related DNA damage, cytokinetic defects, and cell death in COPD patients from Chiang Dao district, Chiang Mai, Thailand. Environ Sci Pollut Res 26, 25326–25340 (2019). https://doi.org/10.1007/s11356-019-05641-w

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  • DOI: https://doi.org/10.1007/s11356-019-05641-w

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