Gut microbiota in chronic liver diseases in children

The impact of gut microbiota on the development of various diseases is of great interest to researchers. However, data on the taxonomic diversity of the intestinal microbiota in chronic liver diseases in children are lacking.Purpose. To study the taxonomic diversity of the fecal microbiota in children with chronic liver diseases in comparison with healthy patients.Material and methods. A metagenomic analysis of the intestinal microbiota of 24 children with chronic liver diseases (mean age 10.3 ± 4.7 years) was carried out with the isolation of the target fragment of the 16S rRNA gene. The group included 18 children with autoimmune liver diseases and 6 children with non-autoimmune liver diseases. The comparison group consisted of fecal samples of 34 apparently healthy children.Results. The conducted study revealed 684 types of microorganisms in the studied samples of patients’ feces. An analysis of the conducted studies showed that fecal samples of healthy children and patients with chronic liver diseases differ in bacterial diversity. The dominant taxa in healthy children were Neisseria flavescens, in patients with chronic liver diseases, the dominant taxa were Bifidobacterium longum, Bifidobacterium adolescentis, Blautia massiliensis. At the same time, Bifidobacterium longum, Bifidobacterium adolescentis, Blautia massiliensis in fecal samples of patients with chronic liver diseases was 8 times as high.Conclusion. Studies have shown differences in the composition of the intestinal microbiota in healthy children and children with chronic liver diseases.

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