Iron deficiency anemia-related gut microbiota dysbiosis in infants and young children: A pilot study

Study information

Needs review

study design

case-control

Citation

PMID PubMed identifier for scientific articles.

30418043

DOI Digital object identifier for electronic documents.

10.1556/030.65.2018.045

URI

Authors

Muleviciene A, D'Amico F, Turroni S, Candela M, Jankauskiene A

Journal

Acta microbiologica et immunologica Hungarica

Year

2018

Keywords:

children, dysbiosis, gut microbiota, infants, iron deficiency anemia

Nutritional iron deficiency (ID) causes not only anemia but also malfunction of the entire human organism. Recently, a role of the gut microbiota has been hypothesized, but limited data are available especially in infants. Here, we performed a pilot study to explore the gut microbiota in 10 patients with iron deficiency anemia (IDA) and 10 healthy controls aged 6-34 months. Fresh stool samples were collected from diapers, and the fecal microbiota was profiled by next-generation sequencing of the V3-V4 hypervariable region of the 16S rRNA gene. Except for diet diversity, the breastfeeding status at the enrollment, the exclusive breastfeeding duration, and the introduction of complementary foods did not differ between groups. Distinct microbial signatures were found in IDA patients, with increased relative abundance of Enterobacteriaceae (mean relative abundance, patients vs. controls, 4.4% vs. 3.0%) and Veillonellaceae (13.7% vs. 3.6%), and reduced abundance of Coriobacteriaceae (3.5% vs. 8.8%) compared to healthy controls. A decreased Bifidobacteriaceae/Enterobacteriaceae ratio was observed in IDA patients. Notwithstanding the low sample size, our data highlight microbiota dysbalance in IDA worth for further investigations, aimed at unraveling the ID impact on the microbiome trajectory in early life, and the possible long-term consequences.

Experiment 1

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Curated date: 2021/01/10

Curator: WikiWorks

Revision editor(s): WikiWorks

Subjects

Location of subjects: Lithuania

Host species Species from which microbiome was sampled (if applicable): 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

Condition The experimental condition / phenotype studied according to the Experimental Factor Ontology: Iron deficiency anemia Ferropenic,Iron deficiency anaemia,Iron-deficiency anaemia,Iron-deficiency anemia,Iron deficiency anemia

Group 0 name Corresponds to the control (unexposed) group for case-control studies: healthy control
Group 1 name Corresponds to the case (exposed) group for case-control studies: iron deficiency anemia
Group 1 definition Diagnostic criteria applied to define the specific condition / phenotype represented in the case (exposed) group: infants and young children with iron deficiency anemia
Group 0 sample size Number of subjects in the control (unexposed) group: 10
Group 1 sample size Number of subjects in the case (exposed) group: 10

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

Statistical test: Mann-Whitney (Wilcoxon)

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)?: No
Matched on Factors on which subjects have been matched on in a case-control study: age