Review and Commentary on the Importance of Bile Acids in the Life Cycle of Clostridioides difficile in Children and Adults.

Autor: Faden H; Department of Pediatrics, Division of Infectious Diseases, Jacobs School of Medicine and Biomedical Sciences, State University of New York, Buffalo, New York, USA.
Jazyk: angličtina
Zdroj: Journal of the Pediatric Infectious Diseases Society [J Pediatric Infect Dis Soc] 2021 May 28; Vol. 10 (5), pp. 659-664.
DOI: 10.1093/jpids/piaa150
Abstrakt: Clostridioides difficile, a spore-forming anaerobe, resides in the intestine. The life cycle of C. difficile illustrates an interdependent relationship between bile acids, commensal microbiota, and C. difficile. Primary bile acids are critical for the germination of C. difficile spores in the small intestine, while secondary bile acids serve as a counterbalance to inhibit the growth of the organism in the colon. Many commensal bacteria especially Clostridium spp. are responsible for transforming primary bile acids into secondary bile acids. Antibiotics eliminate bacteria that convert primary bile acids into secondary bile acids and, thus, allow C. difficile to flourish and cause diarrhea. In children younger than 2 years of age, who normally only produce primary bile acids, colonization with toxin-producing C. difficile is exceedingly common. The reason for the absence of C. difficile diarrhea in the children remains unexplained.
(© The Author(s) 2020. Published by Oxford University Press on behalf of The Journal of the Pediatric Infectious Diseases Society. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
Databáze: MEDLINE
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