Stability and resilience of the intestinal microbiota in children in daycare - a 12 month cohort study
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Stability and resilience of the intestinal microbiota in children in daycare - a 12 month cohort study. / Mortensen, Martin Steen; Jensen, Betina Hebbelstrup; Williams, Jeanne; Brejnrod, Asker Daniel; Andersen, Lee O'Brien; Röser, Dennis; Andreassen, Bente Utoft; Petersen, Andreas Munk; Stensvold, Christen Rune; Sørensen, Søren Johannes; Krogfelt, Karen Angeliki.
In: BMC Microbiology, Vol. 18, 223, 2018.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Stability and resilience of the intestinal microbiota in children in daycare - a 12 month cohort study
AU - Mortensen, Martin Steen
AU - Jensen, Betina Hebbelstrup
AU - Williams, Jeanne
AU - Brejnrod, Asker Daniel
AU - Andersen, Lee O'Brien
AU - Röser, Dennis
AU - Andreassen, Bente Utoft
AU - Petersen, Andreas Munk
AU - Stensvold, Christen Rune
AU - Sørensen, Søren Johannes
AU - Krogfelt, Karen Angeliki
PY - 2018
Y1 - 2018
N2 - BackgroundWe performed a 12-month cohort study of the stability and resilience of the intestinal microbiota of healthy children in daycare in Denmark in relation to diarrheal events and exposure to known risk factors for gastrointestinal health such as travelling and antibiotic use. In addition, we analyzed how gut microbiota recover from such exposures.ResultsWe monitored 32 children in daycare aged 1–6 years. Fecal samples were submitted every second month during a one-year observational period. Information regarding exposures and diarrheal episodes was obtained through questionnaires. Bacterial communities were identified using 16S rRNA gene sequencing. The core microbiota (mean abundance > 95%) dominated the intestinal microbiota, and none of the tested exposures (diarrheal events, travel, antibiotic use) were associated with decreases in the relative abundance of the core microbiota. Samples exhibited lower intra-individual variation than inter-individual variation. Half of all the variation between samples was explained by which child a sample originated from. Age explained 7.6–9.6% of the variation, while traveling, diarrheal events, and antibiotic use explained minor parts of the beta diversity. We found an age-dependent increase of alpha diversity in children aged 1–3 years, and while diarrheal events caused a decrease in alpha diversity, a recovery time of 40–45 days was observed.Among children having had a diarrheal event, we observed a 10x higher relative abundance of Prevotella. After travelling, a higher abundance of two Bacteroides species and 40% less Lachnospiraceae were seen. Antibiotic use did not correlate with changes in the abundance of any bacteria.ConclusionWe present data showing that Danish children in daycare have stable intestinal microbiota, resilient to the exposures investigated. An early age-dependent increase in the diversity was demonstrated. Diarrheal episodes decreased alpha diversity with an estimated recovery time of 40–45 days.
AB - BackgroundWe performed a 12-month cohort study of the stability and resilience of the intestinal microbiota of healthy children in daycare in Denmark in relation to diarrheal events and exposure to known risk factors for gastrointestinal health such as travelling and antibiotic use. In addition, we analyzed how gut microbiota recover from such exposures.ResultsWe monitored 32 children in daycare aged 1–6 years. Fecal samples were submitted every second month during a one-year observational period. Information regarding exposures and diarrheal episodes was obtained through questionnaires. Bacterial communities were identified using 16S rRNA gene sequencing. The core microbiota (mean abundance > 95%) dominated the intestinal microbiota, and none of the tested exposures (diarrheal events, travel, antibiotic use) were associated with decreases in the relative abundance of the core microbiota. Samples exhibited lower intra-individual variation than inter-individual variation. Half of all the variation between samples was explained by which child a sample originated from. Age explained 7.6–9.6% of the variation, while traveling, diarrheal events, and antibiotic use explained minor parts of the beta diversity. We found an age-dependent increase of alpha diversity in children aged 1–3 years, and while diarrheal events caused a decrease in alpha diversity, a recovery time of 40–45 days was observed.Among children having had a diarrheal event, we observed a 10x higher relative abundance of Prevotella. After travelling, a higher abundance of two Bacteroides species and 40% less Lachnospiraceae were seen. Antibiotic use did not correlate with changes in the abundance of any bacteria.ConclusionWe present data showing that Danish children in daycare have stable intestinal microbiota, resilient to the exposures investigated. An early age-dependent increase in the diversity was demonstrated. Diarrheal episodes decreased alpha diversity with an estimated recovery time of 40–45 days.
KW - Gut microbiota
KW - Preschool microbiota
KW - Microbiota stability
U2 - 10.1186/s12866-018-1367-5
DO - 10.1186/s12866-018-1367-5
M3 - Journal article
C2 - 30579350
VL - 18
JO - BMC Microbiology
JF - BMC Microbiology
SN - 1471-2180
M1 - 223
ER -
ID: 210973951