AI Article Synopsis
- Liver cirrhosis patients often experience gut microbiota and metabolic imbalances, with the severity of liver dysfunction linked to these dysbiosis levels.* ! -
- A study involving 12 cirrhosis patients compared their gut microbiota and metabolome before and six months after therapeutic splenectomy, finding significant improvement in liver function and gut health.* ! -
- Post-splenectomy, the patients' gut microbiome and metabolic functions resembled those of healthy controls, with specific bacterial populations and metabolic pathways related to amino acids showing notable restoration.* !
Article Abstract
Unlabelled: Dysbiosis of gut microbiota and metabolome is a frequently encountered condition in liver cirrhosis (LC) patients. The severity of liver dysfunction was found to be correlated with the degree of microbial dysbiosis. Several clinical studies have indicated liver function improvement after therapeutic splenectomy for LC-induced hypersplenism. We sought to determine whether such post-splenectomy outcome is pertinent to modulation of the abnormal gut microenvironment in LC patients. A cross-sectional study including 12 LC patients and 16 healthy volunteers was first conducted, then a before-after study in the cohort of patients was carried out before and 6 months after splenectomy. Fecal samples were collected in hospital. Temporal bacterial ( = 40) and metabolomics ( = 30) profiling was performed using 16s rRNA gene sequencing and ultra performance liquid chromatography/mass spectrometer (UPLC/MS), respectively. Our results revealed that microbial composition in patients was clearly different from that in healthy controls (HCs), evidenced by considerable taxonomic variation. Along with improved liver function (Child-Pugh score), the patients also displayed similar gut microbiota profile and predicted metagenome function to that of HCs after splenectomy. and , two LC-enriched families showing positive relation with Child-Pugh score, exhibited significantly decreased abundance after splenectomy. At the genus level, 11 genera were differentially abundant between patients and HCs, but 9 genera of them restituted to normal levels by certain degree after splenectomy. PICRUSt analysis showed that the relative abundance of 17 KEGG pathways was partially restored after splenectomy. Four of them were amino acid-related pathways: lysine degradation, tryptophan degradation, amino acid metabolism, and protein digestion and absorption. These findings were supported by metabonomics results which showed that relative abundance of amino acid and corresponding catabolites changed toward normal. In addition to the variations in the relative abundances of bacteria and metabolites, the correlation between them also altered in patients after splenectomy. Dysbiosis in gut microbiome and related metabolism of LC patients was partially corrected after splenectomy. Whether the improved gut microenvironment could prevent LC-related complications and delay the progress of LC is a propitious objective for future study.
Trial Registration: ChiCTR-OOB-15007409. Registered November 15, 2015.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5962811 | PMC |
| http://dx.doi.org/10.3389/fmicb.2018.00963 | DOI Listing |
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