Effect of Daily Intake of Lactobacillus casei on Microbial Diversity and Dynamics in a Healthy Pediatric Population
SourceCurrent Microbiology, 76, 9, (2019), pp. 1020-1027
Article / Letter to editor
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SubjectRadboudumc 5: Inflammatory diseases RIMLS: Radboud Institute for Molecular Life Sciences
Emerging evidence exists that an altered gut microbiota is a key factor in the pathophysiology of a variety of diseases. Consequently, microbiota-targeted interventions, including administration of probiotics, have increasingly been evaluated. Mechanisms on how probiotics contribute to homeostasis or reverse (effects of) dysbiosis remain yet to be elucidated. In the current study, we assessed the effects of daily Lactobacillus casei strain Shirota (LcS) ingestion in healthy children aged from 12-18 years on gut microbiota compositional diversity and stability. Results were compared to healthy children without LcS exposure. For a period of 6 weeks, fecal samples were collected weekly by both groups. In total, 18 children were included (6 probiotics; 12 non-probiotics). At 1-week intervals, no differences in diversity and stability were observed in children exposed to LcS versus controls. LcS ingestion by healthy children does not result in a more diverse and stable gut microbiota composition. Large double-blind placebo-controlled randomized clinical trials in children should be performed to gain more insight on potential beneficial health consequences.
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