Ontology highlight
ABSTRACT:
PROVIDER: PRJNA664009 | ENA |
REPOSITORIES: ENA
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Project description:<p>Cholestasis is a clinical condition resulting from the impairment of bile flow. Currently, patients with cholestasis still face several barriers in seeking diagnosis and treatment. Zhuyu Pill (ZYP) is an ancient classic formula of the Coptis-Evodia herb couples (CEHC), and has been used for cholestasis treatment in the clinic, however, its underlying biological mechanism in cholestasis remain to be clarified. In this study, a cholestasis rat model, induced by α-naphthyl-isothiocyanate (ANIT, 50mg/kg) and treated with ZYP (0.6g/kg or 1.2g/kg), was adopted. Serum biochemical indices and histopathological evaluation was performed, in addition to metabolomics analyses of fecal and 16S rDNA sequencing of the gut microbiota. We evaluated the anticholestatic activity of ZYP and investigated the mechanism underlying its correlation with gut microbiota and fecal metabolite regulation. The relationships between biochemical indices, fecal metabolites, and gut microbiota were analyzed. The results showed that both high and low doses of ZYP can effectively improve the blood biochemical parameters of cholestasis rats, and the intervention effect of high dose ZYP is superior to that that of lower dose. Based on a metabolomics test of fecal samples, significantly altered metabolites in the ANIT and ZYP treatment group were identified. In total, 734 metabolites were differentially expressed, and whose biological functions were mainly associated with amino acid metabolism, steroid hormone biosynthesis, and bile secretion. In addition, sequencing of the 16S rDNA unit in fecal samples revealed that the ZYP could improve the gut microbiota dysbiosis that ANIT had induced. Therefore, we conclude that ANIT altering of blood biochemical and metabolic profiles and gut microbiota can be effectively alleviated using ZYP treatment, this study contributes “TCM wisdom” to clinical diagnosis and treatment of cholestasis.</p>
2022-05-30 | MTBLS2721 | MetaboLights
Project description:<p><strong>BACKGROUND:</strong> The human intestinal microbiome plays a central role in overall health status, especially in early life stages. 16S rRNA amplicon sequencing is used to profile its taxonomic composition; however, multiomic approaches have been proposed as the most accurate methods for study of the complexity of the gut microbiota. In this study, we propose an optimized method for bacterial diversity analysis that we validated and complemented with metabolomics by analyzing fecal samples.</p><p><strong>METHODS:</strong> Forty-eight different analytical combinations regarding (1) 16S rRNA variable region sequencing, (2) a feature selection approach, and (3) taxonomy assignment methods were tested. A total of 18 infant fecal samples grouped depending on the type of feeding were analyzed by the proposed 16S rRNA workflow and by metabolomic analysis.</p><p><strong>RESULTS:</strong> The results showed that the sole use of V4 region sequencing with ASV identification and VSEARCH for taxonomy assignment produced the most accurate results. The application of this workflow showed clear differences between fecal samples according to the type of feeding, which correlated with changes in the fecal metabolic profile.</p><p><strong>CONCLUSION:</strong> A multiomic approach using real fecal samples from 18 infants with different types of feeding demonstrated the effectiveness of the proposed 16S rRNA-amplicon sequencing workflow.</p>
2021-08-18 | MTBLS2942 | MetaboLights