scholarly journals Bile acid derivatives for people with primary sclerosing cholangitis

2019 ◽  
Author(s):  
Johannes Ecker ◽  
Frank Lammert ◽  
Lise Lotte Gluud ◽  
Caroline S Stokes
Keyword(s):  
Bile Acid ◽  
Primary Sclerosing Cholangitis ◽  
Sclerosing Cholangitis ◽  
Bile Acid Derivatives

Altered microbiota and bile acid composition in patients with primary sclerosing cholangitis

2019 ◽  
Author(s):  
T Liwinski ◽  
R Zenouzi ◽  
C John ◽  
H Ehlken ◽  
MC Rühlemann ◽  
...  
Keyword(s):  
Bile Acid ◽  
Primary Sclerosing Cholangitis ◽  
Acid Composition ◽  
Sclerosing Cholangitis

scholarly journals A Pilot Integrative Analysis of Colonic Gene Expression, Gut Microbiota, and Immune Infiltration in Primary Sclerosing Cholangitis-Inflammatory Bowel Disease: Association of Disease With Bile Acid Pathways

2020 ◽  
Vol 14 (7) ◽  
pp. 935-947 ◽  
Author(s):  
Mohammed Nabil Quraishi ◽  
Animesh Acharjee ◽  
Andrew D Beggs ◽  
Richard Horniblow ◽  
Chris Tselepis ◽  
...  
Keyword(s):  
Gene Expression ◽  
Inflammatory Bowel Disease ◽  
Bile Acid ◽  
Gut Microbiota ◽  
Primary Sclerosing Cholangitis ◽  
Bowel Disease ◽  
Sclerosing Cholangitis ◽  
16S Rrna Analysis ◽  
Immune Infiltration ◽  
Inflammatory Bowel

Abstract Background Although a majority of patients with PSC have colitis [PSC-IBD; primary sclerosing cholangitis-inflammatory bowel disease], this is phenotypically different from ulcerative colitis [UC]. We sought to define further the pathophysiological differences between PSC-IBD and UC, by applying a comparative and integrative approach to colonic gene expression, gut microbiota and immune infiltration data. Methods Colonic biopsies were collected from patients with PSC-IBD [n = 10], UC [n = 10], and healthy controls [HC; n = 10]. Shotgun RNA-sequencing for differentially expressed colonic mucosal genes [DEGs], 16S rRNA analysis for microbial profiling, and immunophenotyping were performed followed by multi-omic integration. Results The colonic transcriptome differed significantly between groups [p = 0.01]. Colonic transcriptomes from HC were different from both UC [1343 DEGs] and PSC-IBD [4312 DEGs]. Of these genes, only 939 had shared differential gene expression in both UC and PSC-IBD compared with HC. Imputed pathways were predominantly associated with upregulation of immune response and microbial defense in both disease cohorts compared with HC. There were 1692 DEGs between PSC-IBD and UC. Bile acid signalling pathways were upregulated in PSC-IBD compared with UC [p = 0.02]. Microbiota profiles were different between the three groups [p = 0.01]; with inferred function in PSC-IBD also being consistent with dysregulation of bile acid metabolism. Th17 cells and IL17-producing CD4 cells were increased in both PSC-IBD and UC when compared with HC [p < 0.05]. Multi-omic integration revealed networks involved in bile acid homeostasis and cancer regulation in PSC-IBD. Conclusions Colonic transcriptomic and microbiota analysis in PSC-IBD point toward dysregulation of colonic bile acid homeostasis compared with UC. This highlights important mechanisms and suggests the possibility of novel approaches in treating PSC-IBD.

scholarly journals Alterations of the bile microbiome in primary sclerosing cholangitis

Gut ◽  
2019 ◽  
Vol 69 (4) ◽  
pp. 665-672 ◽  
Author(s):  
Timur Liwinski ◽  
Roman Zenouzi ◽  
Clara John ◽  
Hanno Ehlken ◽  
Malte C Rühlemann ◽  
...  
Keyword(s):  
Bile Acid ◽  
Oral Cavity ◽  
Primary Sclerosing Cholangitis ◽  
Sclerosing Cholangitis ◽  
High Performance ◽  
Alimentary Tract ◽  
Bile Acid Metabolism ◽  
Secondary Bile Acid ◽  
Duodenal Fluid ◽  
Bile Fluid

BackgroundPatients with primary sclerosing cholangitis (PSC) display an altered colonic microbiome compared with healthy controls. However, little is known on the bile duct microbiome and its interplay with bile acid metabolism in PSC.MethodsPatients with PSC (n=43) and controls without sclerosing cholangitis (n=22) requiring endoscopic retrograde cholangiography were included prospectively. Leading indications in controls were sporadic choledocholithiasis and papillary adenoma. A total of 260 biospecimens were collected from the oral cavity, duodenal fluid and mucosa and ductal bile. Microbiomes of the upper alimentary tract and ductal bile were profiled by sequencing the 16S-rRNA-encoding gene (V1–V2). Bile fluid bile acid composition was measured by high-performance liquid chromatography mass spectrometry and validated in an external cohort (n=20).ResultsThe bile fluid harboured a diverse microbiome that was distinct from the oral cavity, the duodenal fluid and duodenal mucosa communities. The upper alimentary tract microbiome differed between PSC patients and controls. However, the strongest differences between PSC patients and controls were observed in the ductal bile fluid, including reduced biodiversity (Shannon entropy, p=0.0127) and increase of pathogen Enterococcus faecalis (FDR=4.18×10−5) in PSC. Enterococcus abundance in ductal bile was strongly correlated with concentration of the noxious secondary bile acid taurolithocholic acid (r=0.60, p=0.0021).ConclusionPSC is characterised by an altered microbiome of the upper alimentary tract and bile ducts. Biliary dysbiosis is linked with increased concentrations of the proinflammatory and potentially cancerogenic agent taurolithocholic acid.

scholarly journals Urisodeoxycholic Acid in Treatment of Liver Cirrhosis

2021 ◽  
Vol 9 (9) ◽  
pp. 1869-1873
Author(s):  
Sangale Mukta
Keyword(s):  
Liver Cirrhosis ◽  
Bile Acid ◽  
Primary Biliary Cirrhosis ◽  
Ursodeoxycholic Acid ◽  
Primary Sclerosing Cholangitis ◽  
Liver Diseases ◽  
Sclerosing Cholangitis ◽  
Chronic Liver ◽  
Biliary Cirrhosis ◽  
Chronic Liver Diseases

Abstract: Ursodeoxycholic acid is a dihy- droxy bile acid with a rapidly expanding spectrum of usage in acute and chronic liver diseases. The various mechanisms of action of this hydrophilic bile acid include direct cytoprotection, detergent action on dysfunctional microtubules, immunomodulation and induction of hypercholer- esis. Its efficacy in primary biliary cirrhosis and primary sclerosing cholangitis as an adjunct to medical therapy has been well established.Ursodeoxycholic acid prolongs survival in primary biliary cirrhosis and it improves biochemical parameters of cholestasis in various other cholestatic disorders including primary sclerosing cholangitis, intrahepatic cholestasis of pregnancy, cystic fibrosis and total parenteral nutritioninduced cholestasis. However, a positive effect on survival remains to be established in these diseases. Ursodeoxycholic acid is of unproven efficacy in non- cholestatic disorders such as acute rejection after liver transplantation, non-alcoholic steatohepatitis, alcoholic liver disease and chronic viral hepatitis. This review outlines the present knowledge of the Pharmacology of ursodeoxycholic acid, and presents data from clinical trials on its use in chronic liver diseases. Keywords: Liver cirrhosis, Urisodeoxycholic acid

Sign in / Sign up

Export Citation Format

Share Document