Liver Expression of Sulphotransferase 2A1 Enzyme Is Impaired in Patients with Primary Sclerosing Cholangitis: Lack of the Response to Enhanced Expression of PXR.

ABSTRACT:

Background/aim

Sulphotransferase 2A1 (SULT2A1) exerts hepatoprotective effects. Transcription of SULT2A1 gene is induced by pregnane-X-receptor (PXR) and can be repressed by miR-378a-5p. We studied the PXR/SULT2A1 axis in chronic cholestatic conditions: primary sclerosing cholangitis (PSC) and primary biliary cirrhosis (PBC).

Materials/methods

Western-blot/PCRs for SULT2A1/PXR were performed in PSC (n = 11), PBC (n = 19), and control liver tissues (n = 19). PXR and SULT2A1 mRNA was analyzed in intestinal tissues from 22 PSC patients. Genomic DNA was isolated from blood of PSC patients (n = 120) and an equal number of healthy volunteers. Liver miRNA expression was evaluated using Affymetrix-Gene-Chip miRNA4.0.

Results

Increased PXR protein was observed in both PSC and

SUBMITTER: Wunsch E 

PROVIDER: S-EPMC4609469 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature