Evolution of PM2.5 bacterial community structure in Beijing's suburban atmosphere

Chen, Hanlin; Du, Rui; Du, Pengrui; Zhang, Sujian; Ren, Weishan; Yang, Mei

doi:10.1016/j.scitotenv.2021.149387

Cited by 11 publications

(10 citation statements)

References 65 publications

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“…The microbial abundance and diversity during the year were compared and higher indexes are more often observed in the hot seasons (spring, summer) (52% of the selected papers, 36% summer and 16% spring). Samples analysis showed a season-based cluster where samples that were collected during the same season were separated from the other samples [17,18,[37][38][39][40]. Bertolini et al (2013) reported the presence of a common core of bacterial species that causes a visual overlap of the summer and winter samples with spring/fall ones [41].…”

Section: Resultsmentioning

confidence: 99%

“…Air pollutants affect the aerobiome, decreasing both the species richness and the relative abundance. Chen et al (2021) reported the presence of a bacterial core that is present in all air quality conditions, but whose amount decreases with the increase of the air pollution [37]. , also reported a negative correlation with the ozone (O 3 ) [39].…”

Section: Discussionmentioning

confidence: 95%

“…Du et al (2018) and Want et al (2021) reported a decrease of the species richness with the increase of the AQI [13,54]. Chen et al (2021) identified a bacterial core that was more present when the AQI was higher, confirming a decrease in the species richness [37].…”

Section: Discussionmentioning

confidence: 96%

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Urban Aerobiome and Effects on Human Health: A Systematic Review and Missing Evidence

et al. 2022

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Urban air pollutants are a major public health concern and include biological matters which composes about 25% of the atmospheric aerosol particles. Airborne microorganisms were traditionally characterized by culture-based methods recognizing just 1.5–15.3% of the total bacterial diversity that was evaluable by genome signature in the air environment (aerobiome). Despite the large number of exposed people, urban aerobiomes are still weakly described even if recently advanced literature has been published. This paper aims to systematically review the state of knowledge on the urban aerobiome and human health effects. A total of 24 papers that used next generation sequencing (NGS) techniques for characterization and comprised a seasonal analysis have been included. A core of Proteobacteria, Actinobacteria, Firmicutes, and Bacteroides and various factors that influenced the community structure were detected. Heterogenic methods and results were reported, for both sampling and aerobiome diversity analysis, highlighting the necessity of in-depth and homogenized assessment thus reducing the risk of bias. The aerobiome can include threats for human health, such as pathogens and resistome spreading; however, its diversity seems to be protective for human health and reduced by high levels of air pollution. Evidence of the urban aerobiome effects on human health need to be filled up quickly for urban public health purposes.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 95%

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Urban Aerobiome and Effects on Human Health: A Systematic Review and Missing Evidence

et al. 2022

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“…When the conditions improve, the spores resume active growth (Paredes‐Sabja et al ., 2011; Setlow, 2014). Harsh atmospheric conditions in summer, such as frequent rainfall, can also cause damage to microorganisms (Chen et al ., 2021c). It was inferred that the harsh natural environment in summer may have a more dominant effect on microbial activity than human activities and altitude on microbial activity.…”

Section: Resultsmentioning

confidence: 99%

Microbial activity and community structure in PM₂_.5 at different heights in ground boundary layer of Beijing atmosphere under various air quality levels

Chen

Zhang

et al. 2022

Environmental Microbiology

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Summary The outbreak of the COVID‐19 epidemic is a reminder that aerosols have important health effects as a potential route for disease transmission. Biological components in aerosols (especially PM2.5) may pose potential threats to humans as pathogens and allergens. Research on PM2.5 and biological components currently focuses mainly on polluted conditions, with less emphasis on clean environments. Sampling has also been primarily based on a single point with a lack of data at different positions. In this study, a modified fluorescein diacetate hydrolysis method was used to measure microbial activity in PM2.5 at different altitudes over a year in Beijing, China. A high‐throughput sequencing method was used to study the microbial community. Results showed that microbial activity 1.5 m (0.0465 ng m−3) above the ground was higher than 31.5 m (0.0348 ng m−3). There was higher microbial activity at both heights during spring. Furthermore, a positive correlation was observed between microbial activity and relative abundance of dominant species. Microbial activity increased during autumn and winter increased alongside the pollution level, but in spring higher levels of microbial activity were observed in excellent or good weather conditions. The results from this study are valuable for further research regarding the biological components of atmospheric PM, the prevention of biological pollution, and establishing a comprehensive air quality evaluation system.

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“…While many recent studies have debated the existence of viruses, especially SARS-CoV-2, on atmospheric PMs, − other kinds of pathogens, such as bacteria and fungi, could be detected in PMs. − To date, an increasing number of studies have pointed out that bacteria in the atmosphere can enter the human body through the respiratory tract, posing threats to human health and causing serious public health problems, including infections, acute toxic effects, allergies, and even cancers. ,, At present, many studies have focused on the relationships between PMs, especially fine particulate matters (FPMs), and bacterial infection of the lung. − For example, Mushtaq et al found that FPMs could facilitate bacteria adherence to lower airway cells and increase the vulnerability of cells . Liu et al proposed that exposure to FPMs promoted ROS generation in lung epithelial cells and disrupted the epithelial barrier, leading to the invasion of Pseudomonas aeruginosa (P.…”

Section: Introductionmentioning

confidence: 99%

Co-Exposure of Ambient Particulate Matter and Airborne Transmission Pathogens: The Impairment of the Upper Respiratory Systems

Chen

Yan

et al. 2022

Environ. Sci. Technol.

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Recent evidence has pinpointed the positive relevance between air particulate matter (PM) pollution and epidemic spread. However, there are still significant knowledge gaps in understanding the transmission and infection of pathogens loaded on PMs, for example, the interactions between pathogens and pre-existing atmospheric PM and the health effects of co-exposure on the inhalation systems. Here, we unraveled the interactions between fine particulate matter (FPM) and Pseudomonas aeruginosa (P. aeruginosa) and evaluated the infection and detrimental effects of co-exposure on the upper respiratory systems in both in vitro and in vivo models. We uncovered the higher accessibility and invasive ability of pathogens to epithelial cells after loading on FPMs, compared with the single exposure. Furthermore, we designed a novel laboratory exposure model to simulate a real co-exposure scenario. Intriguingly, the co-exposure induced more serious functional damage and longer inflammatory reactions to the upper respiratory tract, including the nasal cavity and trachea. Collectively, our results provide a new point of view on the transmission and infection of pathogens loaded on FPMs and uncover the in vivo systematic impairments of the inhalation tract under co-exposure through a novel laboratory exposure model. Hence, this study sheds light on further investigations of the detrimental effects of air pollution and epidemic spread.

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Evolution of PM2.5 bacterial community structure in Beijing's suburban atmosphere

Cited by 11 publications

References 65 publications

Urban Aerobiome and Effects on Human Health: A Systematic Review and Missing Evidence

Urban Aerobiome and Effects on Human Health: A Systematic Review and Missing Evidence

Microbial activity and community structure in PM₂_.5 at different heights in ground boundary layer of Beijing atmosphere under various air quality levels

Co-Exposure of Ambient Particulate Matter and Airborne Transmission Pathogens: The Impairment of the Upper Respiratory Systems

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Evolution of PM2.5 bacterial community structure in Beijing's suburban atmosphere

Cited by 11 publications

References 65 publications

Urban Aerobiome and Effects on Human Health: A Systematic Review and Missing Evidence

Urban Aerobiome and Effects on Human Health: A Systematic Review and Missing Evidence

Microbial activity and community structure in PM2.5 at different heights in ground boundary layer of Beijing atmosphere under various air quality levels

Co-Exposure of Ambient Particulate Matter and Airborne Transmission Pathogens: The Impairment of the Upper Respiratory Systems

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Product

Resources

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Microbial activity and community structure in PM₂_.5 at different heights in ground boundary layer of Beijing atmosphere under various air quality levels