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Exposure to traffic-related air pollution and bacterial diversity in the lower respiratory tract of children.
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- معلومة اضافية
- المصدر:
Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
- بيانات النشر:
Original Publication: San Francisco, CA : Public Library of Science
- الموضوع:
- نبذة مختصرة :
Background: Exposure to particulate matter has been shown to increase the adhesion of bacteria to human airway epithelial cells. However, the impact of traffic-related air pollution (TRAP) on the respiratory microbiome is unknown.
Methods: Forty children were recruited through the Cincinnati Childhood Allergy and Air Pollution Study, a longitudinal cohort followed from birth through early adolescence. Saliva and induced sputum were collected at age 14 years. Exposure to TRAP was characterized from birth through the time of sample collection using a previously validated land-use regression model. Sequencing of the bacterial 16S and ITS fungal rRNA genes was performed on sputum and saliva samples. The relative abundance of bacterial taxa and diversity indices were compared in children with exposure to high and low TRAP. We also used multiple linear regression to assess the effect of TRAP exposure, gender, asthma status, and socioeconomic status on the alpha diversity of bacteria in sputum.
Results: We observed higher bacterial alpha diversity indices in sputum than in saliva. The diversity indices for bacteria were greater in the high TRAP exposure group than the low exposure group. These differences remained after adjusting for asthma status, gender, and mother's education. No differences were observed in the fungal microbiome between TRAP exposure groups.
Conclusion: Our findings indicate that exposure to TRAP in early childhood and adolescence may be associated with greater bacterial diversity in the lower respiratory tract. Asthma status does not appear to confound the observed differences in diversity. These results demonstrate that there may be a TRAP-exposure related change in the lower respiratory microbiota that is independent of asthma status.
Competing Interests: The authors have declared that no competing interests exist.
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- Grant Information:
R21 ES024807 United States ES NIEHS NIH HHS; T42OH008432 United States ACL ACL HHS; UL1 TR001425 United States TR NCATS NIH HHS
- الرقم المعرف:
0 (Vehicle Emissions)
- الموضوع:
Date Created: 20210624 Date Completed: 20211102 Latest Revision: 20240404
- الموضوع:
20240404
- الرقم المعرف:
PMC8224880
- الرقم المعرف:
10.1371/journal.pone.0244341
- الرقم المعرف:
34166366
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