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2021 ; 70
(2
): 276-284
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Depicting SARS-CoV-2 faecal viral activity in association with gut microbiota
composition in patients with COVID-19
#MMPMID32690600
Zuo T
; Liu Q
; Zhang F
; Lui GC
; Tso EY
; Yeoh YK
; Chen Z
; Boon SS
; Chan FK
; Chan PK
; Ng SC
Gut
2021[Feb]; 70
(2
): 276-284
PMID32690600
show ga
OBJECTIVE: Although severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
RNA was detected in faeces of patients with COVID-19, the activity and
infectivity of the virus in the GI tract during disease course is largely
unknown. We investigated temporal transcriptional activity of SARS-CoV-2 and its
association with longitudinal faecal microbiome alterations in patients with
COVID-19. DESIGN: We performed RNA shotgun metagenomics sequencing on serial
faecal viral extractions from 15 hospitalised patients with COVID-19. Sequencing
coverage of the SARS-CoV-2 genome was quantified. We assessed faecal microbiome
composition and microbiome functionality in association with signatures of faecal
SARS-CoV-2 infectivity. RESULTS: Seven (46.7%) of 15 patients with COVID-19 had
stool positivity for SARS-CoV-2 by viral RNA metagenomic sequencing. Even in the
absence of GI manifestations, all seven patients showed strikingly higher
coverage (p=0.0261) and density (p=0.0094) of the 3' vs 5' end of SARS-CoV-2
genome in their faecal viral metagenome profile. Faecal viral metagenome of three
patients continued to display active viral infection signature (higher 3' vs 5'
end coverage) up to 6?days after clearance of SARS-CoV-2 from respiratory
samples. Faecal samples with signature of high SARS-CoV-2 infectivity had higher
abundances of bacterial species Collinsella aerofaciens, Collinsella tanakaei,
Streptococcus infantis, Morganella morganii, and higher functional capacity for
nucleotide de novo biosynthesis, amino acid biosynthesis and glycolysis, whereas
faecal samples with signature of low-to-none SARS-CoV-2 infectivity had higher
abundances of short-chain fatty acid producing bacteria, Parabacteroides merdae,
Bacteroides stercoris, Alistipes onderdonkii and Lachnospiraceae bacterium
1_1_57FAA. CONCLUSION: This pilot study provides evidence for active and
prolonged 'quiescent' GI infection even in the absence of GI manifestations and
after recovery from respiratory infection of SARS-CoV-2. Gut microbiota of
patients with active SARS-CoV-2 GI infection was characterised by enrichment of
opportunistic pathogens, loss of salutary bacteria and increased functional
capacity for nucleotide and amino acid biosynthesis and carbohydrate metabolism.