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Circulating microbial cell-free DNA is associated with inflammatory host-responses in severe pneumonia. | LitMetric

AI Article Synopsis

Article Abstract

Host inflammatory responses predict worse outcome in severe pneumonia, yet little is known about what drives dysregulated inflammation. We performed metagenomic sequencing of microbial cell-free DNA (mcfDNA) in 83 mechanically ventilated patients (26 culture-positive, 41 culture-negative pneumonia, 16 uninfected controls). Culture-positive patients had higher levels of mcfDNA than those with culture-negative pneumonia and uninfected controls (p<0.005). Plasma levels of inflammatory biomarkers (fractalkine, procalcitonin, pentraxin-3 and suppression of tumorigenicity-2) were independently associated with mcfDNA levels (adjusted p<0.05) among all patients with pneumonia. Such host-microbe interactions in the systemic circulation of patients with severe pneumonia warrant further large-scale clinical and mechanistic investigations.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8785240PMC
http://dx.doi.org/10.1136/thoraxjnl-2020-216013DOI Listing

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