High prevalence of small intestine bacteria overgrowth and asymptomatic carriage of enteric pathogens in stunted children in Antananarivo, Madagascar - Institut Pasteur Accéder directement au contenu
Article Dans Une Revue PLoS Neglected Tropical Diseases Année : 2022

High prevalence of small intestine bacteria overgrowth and asymptomatic carriage of enteric pathogens in stunted children in Antananarivo, Madagascar

Pascale Vonaesch
Philippe Sansonetti

Résumé

Environmental Enteric Dysfunction (EED) refers to an incompletely defined syndrome of inflammation, reduced absorptive capacity, and reduced barrier function in the small intestine. It is widespread among children and adults in low- and middle-income countries and is also associated with poor sanitation and certain gut infections possibly resulting in an abnormal gut microbiota, small intestinal bacterial overgrowth (SIBO) and stunting. We investigated bacterial pathogen exposure in stunted and non-stunted children in Antananarivo, Madagascar by collecting fecal samples from 464 children (96 severely stunted, 104 moderately stunted and 264 non-stunted) and the prevalence of SIBO in 109 duodenal aspirates from stunted children (61 from severely stunted and 48 from moderately stunted children). SIBO assessed by both aerobic and anaerobic plating techniques was very high: 85.3% when selecting a threshold of ≥10 5 CFU/ml of bacteria in the upper intestinal aspirates. Moreover, 58.7% of the children showed more than 10 6 bacteria/ml in these aspirates. The most prevalent cultivated genera recovered were Streptococcus , Neisseria , Staphylococcus , Rothia , Haemophilus , Pantoea and Branhamella . Feces screening by qPCR showed a high prevalence of bacterial enteropathogens, especially those categorized as being enteroinvasive or causing mucosal disruption, such as Shigella spp., enterotoxigenic Escherichia coli , enteropathogenic E . coli and enteroaggregative E . coli . These pathogens were detected at a similar rate in stunted children and controls, all showing no sign of severe diarrhea the day of inclusion but both living in a highly contaminated environment (slum-dwelling). Interestingly Shigella spp. was the most prevalent enteropathogen found in this study (83.3%) without overrepresentation in stunted children.
Fichier principal
Vignette du fichier
journal.pntd.0009849.pdf (1.22 Mo) Télécharger le fichier

Dates et versions

pasteur-03677601 , version 1 (24-05-2022)

Licence

Paternité

Identifiants

Citer

Jean-Marc Collard, Lova Andrianonimiadana, Azimdine Habib, Maheninasy Rakotondrainipiana, Prisca Andriantsalama, et al.. High prevalence of small intestine bacteria overgrowth and asymptomatic carriage of enteric pathogens in stunted children in Antananarivo, Madagascar. PLoS Neglected Tropical Diseases, 2022, 16 (5), pp.e0009849. ⟨10.1371/journal.pntd.0009849⟩. ⟨pasteur-03677601⟩
37 Consultations
48 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More