Depicting SARS-CoV-2 faecal viral activity in association with gut microbiota composition in patients with COVID-19

© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ..

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.

Errataetall:

CommentIn: Gut. 2022 Jan;71(1):226-229. - PMID 34083386

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:70

Enthalten in:

Gut - 70(2021), 2 vom: 02. Feb., Seite 276-284

Sprache:

Englisch

Beteiligte Personen:

Zuo, Tao [VerfasserIn]
Liu, Qin [VerfasserIn]
Zhang, Fen [VerfasserIn]
Lui, Grace Chung-Yan [VerfasserIn]
Tso, Eugene Yk [VerfasserIn]
Yeoh, Yun Kit [VerfasserIn]
Chen, Zigui [VerfasserIn]
Boon, Siaw Shi [VerfasserIn]
Chan, Francis Kl [VerfasserIn]
Chan, Paul Ks [VerfasserIn]
Ng, Siew C [VerfasserIn]

Links:

Volltext

Themen:

Diagnostic virology
Gut inflammation
Infectious disease
Journal Article
Observational Study
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 13.01.2021

Date Revised 13.12.2021

published: Print-Electronic

CommentIn: Gut. 2022 Jan;71(1):226-229. - PMID 34083386

Citation Status MEDLINE

doi:

10.1136/gutjnl-2020-322294

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM31266902X