The oral cavity and intestinal microbiome in children with functional constipation

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Needs review
study design
Citation
PMID PubMed identifier for scientific articles.
DOI Digital object identifier for electronic documents.
URI
Authors
Kwiatkowska M, Gołębiewski M, Sikora M, Rycharska EŁ, Krogulska A
Journal
Scientific reports
Year
2024
Constipation is a widespread problem in paediatric practice, affecting almost 30% of children. One of the key causal factors of constipation may be disturbances in the homeostasis of the gastrointestinal microbiome. The aim of the study was to determine whether the oral and fecal microbiomes differ between children with and without constipation. A total of 91 children over three years of age were included in the study. Of these, 57 were qualified to a group with constipation, and 34 to a group without. The saliva and stool microbiomes were evaluated using 16S rRNA gene amplicon sequencing. Functional constipation was associated with characteristic bacterial taxa in the fecal microbiota. Statistically significant differences were found at the family level: Burkholderiaceae (q = 0.047), Christensenellaceae (q = 0.047), Chlostridiaceae (q = 0.047) were significantly less abundant in the constipation group, while the Tannerellaceae (q = 0.007) were more abundant. At the genus level, the significant differences were observed for rare genera, including Christensenellaceae r-7 (q = 2.88 × 10-2), Fusicatenibacter (q = 2.88 × 10-2), Parabacteroides (q = 1.63 × 10-2), Romboutsia (q = 3.19 × 10-2) and Subdoligranulum (q = 1.17 × 10-2). All of them were less abundant in children with constipation. With the exception of significant taxonomic changes affecting only feces, no differences were found in the alpha and beta diversity of feces and saliva. Children with functional constipation demonstrated significant differences in the abundance of specific bacteria in the stool microbiome compared to healthy children. It is possible that the rare genera identified in our study which were less abundant in the constipated patients (Christensellaceae r-7, Fusicatenibacter, Parabacteroides, Romboutsia and Subdoligranulum) may play a role in protection against constipation. No significant differences were observed between the two groups with regard to the saliva microbiome.

Experiment 1


Needs review

Curated date: 2025/03/12

Curator: Tosin

Revision editor(s): Tosin

Subjects

Location of subjects
Poland
Host species Species from which microbiome was sampled. Contact us to have more species added.
Homo sapiens
Body site Anatomical site where microbial samples were extracted from according to the Uber Anatomy Ontology
Feces Cow dung,Cow pat,Droppings,Dung,Excrement,Excreta,Faeces,Fecal material,Fecal matter,Fewmet,Frass,Guano,Matières fécales@fr,Merde@fr,Ordure,Partie de la merde@fr,Piece of shit,Porción de mierda@es,Portion of dung,Portion of excrement,Portion of faeces,Portion of fecal material,Portion of fecal matter,Portion of feces,Portion of guano,Portion of scat,Portionem cacas,Scat,Spoor,Spraint,Stool,Teil der fäkalien@de,Feces,feces
Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology
Chronic constipation Chronic constipation,Infrequent bowel movements,chronic constipation
Group 0 name Corresponds to the control (unexposed) group for case-control studies
Children without constipation
Group 1 name Corresponds to the case (exposed) group for case-control studies
Children with constipation
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group
Children over three years of age with constipation
Group 0 sample size Number of subjects in the control (unexposed) group
34
Group 1 sample size Number of subjects in the case (exposed) group
57
Antibiotics exclusion Number of days without antibiotics usage (if applicable) and other antibiotics-related criteria used to exclude participants (if any)
1 month

Lab analysis

Sequencing type
16S
16S variable region One or more hypervariable region(s) of the bacterial 16S gene
V3-V4
Sequencing platform Manufacturer and experimental platform used for quantifying microbial abundance
Illumina

Statistical Analysis

Data transformation Data transformation applied to microbial abundance measurements prior to differential abundance testing (if any).
relative abundances
Statistical test
Kruskall-Wallis
Significance threshold p-value or FDR threshold used for differential abundance testing (if any)
0.05
MHT correction Have statistical tests be corrected for multiple hypothesis testing (MHT)?
Yes

Alpha Diversity

Pielou Quantifies how equal the community is numerically
increased
Shannon Estimator of species richness and species evenness: more weight on species richness
unchanged
Richness Number of species
increased

Signature 1

Needs review

Curated date: 2025/03/14

Curator: Tosin

Revision editor(s): Tosin

Source: Table 3

Description: Taxonomic changes in the gut microbiome in children with functional constipation (FC) compared to children without functional constipation (FC)

Abundance in Group 1: increased abundance in Children with constipation

NCBI Quality ControlLinks
Tannerellaceae

Revision editor(s): Tosin

Signature 2

Needs review

Curated date: 2025/03/14

Curator: Tosin

Revision editor(s): Tosin

Source: Table 3

Description: Taxonomic changes in the gut microbiome in children with functional constipation (FC) compared to children without functional constipation (FC).

Abundance in Group 1: decreased abundance in Children with constipation

NCBI Quality ControlLinks
Burkholderiaceae
Christensenellaceae
Clostridiaceae
Fusicatenibacter
Parabacteroides
Romboutsia
Subdoligranulum

Revision editor(s): Tosin