Data from PLoS One - Curated by EPG Health - Date available 18 January 2018


Free full text

Article type

Clinical trial

Original date published

18 January 2018

Original format

Print publication

Background: We previously showed that increased asymmetric dimethylarginine (ADMA) biliary excretion occurs during hepatic ischemia/reperfusion (I/R), prompting us to study the effects of the farnesoid X receptor (FXR) agonist obeticholic acid (OCA) on bile, serum and tissue levels of ADMA after I/R.

Material and methods: Male Wistar rats were orally administered 10mg/kg/day of OCA or vehicle for 5 days and were subjected to 60 min partial hepatic ischemia or sham-operated. After a 60 min reperfusion, serum, tissue and bile ADMA levels, liver mRNA and protein expression of ADMA transporters (CAT-1, CAT-2A, CAT-2B, OCT-1, MATE-1), and enzymes involved in ADMA synthesis (protein-arginine-N-methyltransferase-1, PRMT-1) and metabolism (dimethylarginine-dimethylaminohydrolase-1, DDAH-1) were measured.

Results: OCA administration induced a further increase in biliary ADMA levels both in sham and I/R groups, with no significant changes in hepatic ADMA content. A reduction in CAT-1, CAT-2A or CAT-2B transcripts was found in OCA-treated sham-operated rats compared with vehicle. Conversely, OCA administration did not change CAT-1, CAT-2A or CAT-2B expression, already reduced by I/R. However, a marked decrease in OCT-1 and increase in MATE-1 expression was observed. A similar trend occurred with protein expression.

Conclusion: The reduced mRNA expression of hepatic CAT transporters suggests that the increase in serum ADMA levels is probably due to decreased liver uptake of ADMA from the systemic circulation. Conversely, the mechanism involved in further increasing biliary ADMA levels in sham and I/R groups treated with OCA appears to be MATE-1-dependent.

Data sources

Read abstract on library site Access full article


You will need to login, to leave a comment. is not monitored for collection of adverse event reports. Any adverse events should be reported to your national reporting agency and/or the manufacturer.

Learning Zones

An Learning Zone (LZ) is an area of the site dedicated to providing detailed self-directed medical education about a disease, condition or procedure.

Inflammatory Bowel Disease Knowledge Centre

Inflammatory Bowel Disease Knowledge Centre

The Inflammatory Bowel Disease (IBD) Knowledge Centre contains key information relating to the epidemiology and pathophysiology of Crohn’s disease and ulcerative colitis, highlighting prevalence, impact and unmet needs and the underlying inflammatory processes that drive IBD, considering some of the key inflammatory pathways.

Fluid Management

Fluid Management

Are you up-to-date with the latest evidence of effective procedures for fluid management?

+ 2 more

Migraine Knowledge Centre

Migraine Knowledge Centre

The Migraine Knowledge Centre features latest research on the prevalence and impact of migraine, the proposed neurological basis of the condition (and how this is being translated into new and exciting drug therapies), as well as current patient care strategies collated from headache organisations worldwide.

Load more

Related Content