Journal article
Indoor Particulate Matter From Smoker Homes Induces Bacterial Growth, Biofilm Formation, and Impairs Airway Antimicrobial Activity. A Pilot Study
Frontiers in public health, Vol.7, pp.418-418
2020
DOI: 10.3389/fpubh.2019.00418
PMCID: PMC6992572
PMID: 32039129
Abstract
Background: Particulate matter (PM) air pollution causes deleterious health effects; however, less is known about health effects of indoor air particulate matter (IAP). Objective: To understand whether IAP influences distinct mechanisms in the development of respiratory tract infections, including bacterial growth, biofilm formation, and innate immunity. Additionally, we tested whether IAP from Iowa houses of subjects with and without recent respiratory exacerbations recapitulated the National Institute of Standards and Technology (NIST) IAP findings. Methods: To test the effect of NIST and Iowa IAP on bacterial growth and biofilm formation, we assessed Staphylococcus aureus growth and Pseudomonas aeruginosa biofilm formation with and without the presence of IAP. To assess the effect of IAP on innate immunity, we exposed primary human airway surface liquid (ASL) to NIST, and Iowa IAP. Lastly, we tested whether specific metals may be responsible for effects on airway innate immunity. Results: NIST and Iowa IAP significantly enhanced bacterial growth and biofilm formation. NIST IAP (whole particle and the soluble portion) impaired ASL antimicrobial activity. IAP from one Iowa home significantly impaired ASL antimicrobial activity (p < 0.05), and five other homes demonstrated a trend (p ≤ 0.18) of impaired ASL antimicrobial activity. IAP from homes of subjects with a recent history of respiratory exacerbation tended (p = 0.09) to impair ASL antimicrobial activity more than IAP from homes of those without a history respiratory exacerbation. Aluminum and Magnesium impaired ASL antimicrobial activity, while copper was bactericidal. Combining metals varied their effect on ASL antimicrobial activity. Conclusions: NIST IAP and Iowa IAP enhanced bacterial growth and biofilm formation. ASL antimicrobial activity was impaired by NIST IAP, and Iowa house IAP from subjects with recent respiratory exacerbation tended to impair ASL antimicrobial activity. Individual metals may explain impaired ASL antimicrobial activity; however, antimicrobial activity in the presence of multiple metals warrants further study.
Details
- Title: Subtitle
- Indoor Particulate Matter From Smoker Homes Induces Bacterial Growth, Biofilm Formation, and Impairs Airway Antimicrobial Activity. A Pilot Study
- Creators
- Emma M StapletonRobert MangesGavin ParkerElizabeth A Stone - University of Iowa, ChemistryThomas M PetersRobert J BlountJulio NoriegaXiaopeng LiJoseph ZabnerPhilip M PolgreenOctav ChiparaTed HermanAlejandro P Comellas
- Resource Type
- Journal article
- Publication Details
- Frontiers in public health, Vol.7, pp.418-418
- DOI
- 10.3389/fpubh.2019.00418
- PMID
- 32039129
- PMCID
- PMC6992572
- NLM abbreviation
- Front Public Health
- ISSN
- 2296-2565
- eISSN
- 2296-2565
- Grant note
- DOI: 10.13039/100000002, name: National Institutes of Health; DOI: 10.13039/100000066, name: National Institute of Environmental Health Sciences
- Language
- English
- Date published
- 2020
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Occupational and Environmental Health; Stead Family Department of Pediatrics; Epidemiology; Injury Prevention Research Center; Computer Science; Chemistry; Chemical and Biochemical Engineering; Internal Medicine
- Record Identifier
- 9983993157102771
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