Astrid Ducournau
YOU?
Author Swipe
View article: Stool Screening for Campylobacter Species in Hypogammaglobulinemic Patients Receiving Immunoglobulin Therapy
Stool Screening for Campylobacter Species in Hypogammaglobulinemic Patients Receiving Immunoglobulin Therapy Open
View article: Stool Screening for Campylobacter Species in Hypogammaglobulinemic Patients Receiving Immunoglobulin Therapy
Stool Screening for Campylobacter Species in Hypogammaglobulinemic Patients Receiving Immunoglobulin Therapy Open
Hypogammaglobulinemia (HG) predisposes patients to gastrointestinal Campylobacter infections. This prospective study determined the prevalence of Campylobacter in stool samples from patients with immunoglobulin (Ig)-substituted HG at Borde…
View article: Molecular investigation of unexpected Helicobacter pylori bacteremia
Molecular investigation of unexpected Helicobacter pylori bacteremia Open
View article: Performance evaluation of the Biosynex AMPLIQUICK Fecal Bacteriology PCR kit
Performance evaluation of the Biosynex AMPLIQUICK Fecal Bacteriology PCR kit Open
View article: Association of Tralokinumab and Adalimumab: Good Tolerance and Efficacy in a Case of Severe Atopic Dermatitis and Juvenile Idiopathic Arthritis
Association of Tralokinumab and Adalimumab: Good Tolerance and Efficacy in a Case of Severe Atopic Dermatitis and Juvenile Idiopathic Arthritis Open
Atopic dermatitis is a chronic inflammatory and pruritic skin disease. The combination of tralokinumab with adalimumab in the treatment of inflammatory diseases had not yet been documented. It appears promising for treating severe atopic d…
View article: Evaluation of a rapid fluorescence immunoassay for detecting Campylobacter antigens in stool samples
Evaluation of a rapid fluorescence immunoassay for detecting Campylobacter antigens in stool samples Open
SCFIA results are highly correlated with PCR results, with no cross-reactivity with phylogenetically related species. The linear correlation between fluorescence and CFU/mL results was strong. The assay's ability to detect antigens of vari…
View article: Increasing rates of <i>erm</i> (B) and <i>erm</i> (N) in human <i>Campylobacter coli</i> and <i>Campylobacter jejuni</i> erythromycin-resistant isolates between 2018 and 2023 in France
Increasing rates of <i>erm</i> (B) and <i>erm</i> (N) in human <i>Campylobacter coli</i> and <i>Campylobacter jejuni</i> erythromycin-resistant isolates between 2018 and 2023 in France Open
Macrolides are the first-line compounds used for the treatment of campylobacteriosis. Macrolide resistance remains low in France, with mutations in 23S rDNA being the main associated resistance mechanism. However, two erythromycin methyltr…
View article: First isolation of <i>Campylobacter vicugnae</i> sp. nov. in humans suffering from gastroenteritis
First isolation of <i>Campylobacter vicugnae</i> sp. nov. in humans suffering from gastroenteritis Open
The present study describes the first isolation of a recently described Campylobacter species, Campylobacter vicugnae , in humans. The isolates were recovered by two independent French laboratories in 2020 and 2022 from a man and a woman s…
View article: Genomic Determinants of Antibiotic Resistance for Helicobacter Pylori Treatment
Genomic Determinants of Antibiotic Resistance for Helicobacter Pylori Treatment Open
View article: Description of a Case of <i>Helicobacter pylori</i> Infection with <i>In Vitro</i> Resistance to Tetracycline: An Exceptional Event with No Consequences?
Description of a Case of <i>Helicobacter pylori</i> Infection with <i>In Vitro</i> Resistance to Tetracycline: An Exceptional Event with No Consequences? Open
Resistance in Helicobacter pylori to tetracycline is rare. We describe the case of an H. pylori strain with a high level of resistance to tetracycline (minimum inhibitory concentration = 12 mg/L). However, despite tetracyclin…
View article: Combined genomic-proteomic approach in the identification of Campylobacter coli amoxicillin-clavulanic acid resistance mechanism in clinical isolates
Combined genomic-proteomic approach in the identification of Campylobacter coli amoxicillin-clavulanic acid resistance mechanism in clinical isolates Open
Introduction Aminopenicillins resistance among Campylobacter jejuni and Campylobacter coli strains is associated with a single mutation in the promoting region of a chromosomal beta-lactamase bla OXA61 , allowing its expression. Clavulanic…
View article: RIDA®GENE Helicobacter pylori PCR on the ELITe InGenius System
RIDA®GENE Helicobacter pylori PCR on the ELITe InGenius System Open
PCR detection of Helicobacter pylori infection in gastric biopsies allows the detection of this bacterium and the mutations associated with macrolide resistance. The aim of this study was to evaluate the performance of RIDA®GENE H. pylori …
View article: Nrf2 Downregulation Contributes to Epithelial-to-Mesenchymal Transition in Helicobacter pylori-Infected Cells
Nrf2 Downregulation Contributes to Epithelial-to-Mesenchymal Transition in Helicobacter pylori-Infected Cells Open
Background: Gastric cancer, the fifth most common cancer worldwide, is mainly linked to Helicobacter pylori infection. H. pylori induces chronic inflammation of the gastric mucosa associated with high oxidative stress. Our study aimed at a…
View article: Molecular Cut-off Values for Aliarcobacter butzleri Susceptibility Testing
Molecular Cut-off Values for Aliarcobacter butzleri Susceptibility Testing Open
Aliarcobacter butzleri is an emerging and concerning intestinal pathogen. Very few studies have focused on this particular species, and antimicrobial susceptibility testing (AST) is based on methods that have been mostly developed for Camp…
View article: Emergence of Erythromycin Resistance Methyltransferases in Campylobacter coli Strains in France
Emergence of Erythromycin Resistance Methyltransferases in Campylobacter coli Strains in France Open
Antimicrobial resistance in campylobacters has been described worldwide. The emergence of multiresistant isolates, particularly among Campylobacter coli isolates, is concerning.
View article: Evaluation of CAMPYLOBACTER QUIK CHEK™ rapid membrane enzyme immunoassay to detect Campylobacter spp. antigen in stool samples
Evaluation of CAMPYLOBACTER QUIK CHEK™ rapid membrane enzyme immunoassay to detect Campylobacter spp. antigen in stool samples Open
Campylobacter spp. enteritis is the most frequent bacterial enteritis in both adults and children and is sometimes a source of severe complications. Its diagnosis by culture suffers from a lack of sensitivity and delays the result, prevent…
View article: Cutaneous manifestations of COVID-19 in the Franche-Comté region of France: A monocentric study
Cutaneous manifestations of COVID-19 in the Franche-Comté region of France: A monocentric study Open
View article: Genome-Wide Identification of Host-Segregating Single-Nucleotide Polymorphisms for Source Attribution of Clinical Campylobacter coli Isolates
Genome-Wide Identification of Host-Segregating Single-Nucleotide Polymorphisms for Source Attribution of Clinical Campylobacter coli Isolates Open
Genome-wide and source attribution studies based on Campylobacter species have shown their importance for the understanding of foodborne infections. Although the use of multilocus sequence typing based on 7 genes from C. jejuni is a powerf…
View article: Performance Evaluation of the Novodiag Bacterial GE+ Multiplex PCR Assay
Performance Evaluation of the Novodiag Bacterial GE+ Multiplex PCR Assay Open
The bacteriological diagnosis of intestinal bacterial infections has historically been based on culture on agar plates. However, culture may lack sensitivity, and some enteropathogens, such as pathovars of Escherichia coli , may escape rou…
View article: Whole-Genome Sequencing and Bioinformatics as Pertinent Tools to Support Helicobacteracae Taxonomy, Based on Three Strains Suspected to Belong to Novel Helicobacter Species
Whole-Genome Sequencing and Bioinformatics as Pertinent Tools to Support Helicobacteracae Taxonomy, Based on Three Strains Suspected to Belong to Novel Helicobacter Species Open
The present study describes three putative novel species received at the French National Reference Center for Campylobacters & Helicobacters (CNRCH). The CNRCH 2005/566H strain was isolated in 2005 from the feces of a patient with a hepato…
View article: How to Interpret a Positive Campylobacter PCR Result Using the BD MAXTM System in the Absence of Positive Culture?
How to Interpret a Positive Campylobacter PCR Result Using the BD MAXTM System in the Absence of Positive Culture? Open
The aim of this study was to evaluate, using two independent polymerase chain reaction (PCR) formats, the results of Campylobacter detection by the BD MAXTM Enteric Bacterial Panel PCR (Becton Dickinson, Le Pont de Claix, France) in the ab…
View article: Source attribution of Campylobacter jejuni shows variable importance of chicken and ruminants reservoirs in non-invasive and invasive French clinical isolates
Source attribution of Campylobacter jejuni shows variable importance of chicken and ruminants reservoirs in non-invasive and invasive French clinical isolates Open
Campylobacter jejuni is the most common cause of bacterial gastroenteritis worldwide. Mainly isolated from stool samples, C. jejuni can also become invasive. C. jejuni belongs to the commensal microbiota of a number of hosts, and infection…
View article: Whole-Genome Sequence Analysis of Multidrug-Resistant Campylobacter Isolates: a Focus on Aminoglycoside Resistance Determinants
Whole-Genome Sequence Analysis of Multidrug-Resistant Campylobacter Isolates: a Focus on Aminoglycoside Resistance Determinants Open
A whole-genome sequencing (WGS) approach was conducted in order to identify the molecular determinants associated with antimicrobial resistance in 12 multidrug-resistant Campylobacter jejuni and Campylobacter coli isolates, with a focus on…
View article: A Potential New Human Pathogen Belonging to Helicobacter Genus, Identified in a Bloodstream Infection
A Potential New Human Pathogen Belonging to Helicobacter Genus, Identified in a Bloodstream Infection Open
We isolated from aerobic and anaerobic blood culture bottles from a febrile patient, a Helicobacter-like Gram negative, rod-shaped bacterium that MALDI-TOF MS failed to identify. Blood agar cultures incubated in a microaerobic atmos…