The study investigators hypothesize that SARS-Cov2 infection alters the composition of the digestive microbiota and its functionality, resulting in changes in intestinal permeability and consequently in microbial digestive translocation. These changes may correlate with the magnitude of the SARS-CoV-2 viral load in the gastrointestinal tract and may have an impact on the clinical manifestations and evolvability of COVID-19.
Study Type
OBSERVATIONAL
Enrollment
15
Fecal sample taken to investigate intestinal microbiota
CHU de Nimes
Nîmes, France
Number of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg)
RT-qPCR of SARS-CoV-2 to calculate copies/mg
Time frame: Day 0
Age of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
Age in years
Time frame: Day 0
Sex of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
Male/female
Time frame: Day 0
Clinical features of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
Date of start of symptoms, current therapeutics, antibiotic therapy, blood pressure, heart rate, respiration rate, oxygen saturation, symptoms, Covid stage (ordinal 8 stage scale)
Time frame: Day 0
Total blood count of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
lymphocyte count, eosinophil count
Time frame: Day 0
C-reactive protein level biological data of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
concentration
Time frame: Day 0
Fibrinogen level of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
concentration
Time frame: Day 0
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Lactate Dehydrogenase of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
concentration
Time frame: Day 0
D-dimer level of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
concentration
Time frame: Day 0
Ferritin levels, of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
Concentration
Time frame: Day 0
Albumin levels of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
concentration
Time frame: Day 0
Calcium levels of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
concentration
Time frame: Day 0
Glomerular filtration rate of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
volume per time
Time frame: Day 0
Liver function tests of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
Time frame: Day 0
Cytobacteriological urine exam of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
Time frame: Day 0
Blood cultures of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
Time frame: Day 0
Other infectious samples (other than SARS-CoV-2) of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg) if tested
Time frame: Day 0
Taxonomic features of intestinal microbiota of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
Number of Operational Taxonomic Unit
Time frame: Day 0
Percentage of Operational Taxonomic Units in intestinal microbiota of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
%
Time frame: Day 0
Diversity of intestinal microbiota of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
Shannon Index
Time frame: Day 0
Diversity of intestinal microbiota of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
Bray Curtis Index
Time frame: Day 0
LPS-binding Protein concentration of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
pg/ml ELISA
Time frame: Day 0
soluble CD14 concentration of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
ng/ml ELISA
Time frame: Day 0
RNA16s concentration of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
PCR and sequencing
Time frame: Day 0
RNA18 concentration of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
PCR and sequencing
Time frame: Day 0
I-FAB concentration of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
ng/ml:ELISA
Time frame: Day 0
Claudin 3 concentration of patients with high viral load of SARS-CoV-2 in feces (>50 copies/mg) versus low viral load (≤50 copies/mg)
ng/ml:ELISA
Time frame: Day 0