Association among blood BPDE-DNA adduct, serum interleukin-8 (IL-8) and DNA strand breaks for children with pulmonary diseases

ABSTRACT

Exposure to benzo[a]pyrene (B[a]P) may be a risk factor for pulmonary diseases. To investigate the correlations among B[a]P exposure level, DNA strand breaks and pulmonary inflammation, we recruited 83 children diagnosed with pulmonary diseases and 63 healthy children from Guangzhou, China. Results showed that the levels of Benzo[a]pyrene diol epoxide (BPDE) DNA adduct in blood and IL-8 in serum in case group were significantly higher than those in control group (p < 0.01). Moreover, levels of atmospheric B[a]P in case group was about twice of those in control group, which was consistent with the levels of BPDE-DNA adduct in blood. Significant positive correlations were observed among the levels of BPDE-DNA adduct, IL-8 and DNA strand breaks (p < 0.05). Our findings indicate that environmental air is an important exposure source of B[a]P and higher B[a]P exposure may contribute to the occurrence of pulmonary inflammation and lead to high health risks.

KEYWORDS:

• Benzo[a]pyrene
• BPDE-DNA adduct
• peripheral blood lymphocytes
• DNA strand breaks
• pulmonary inflammation

Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grant (No. 41731279, No. 21477041, No. 21777048 and No. 41722305).

Declaration of conflict of interest

The authors declare no conflict of interest regarding the publication of this paper.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [No. 41731279, No. 21477041, No. 21777048 and No. 41722305].