Welcome to the home page of the Norwegian PSC Research Center 



Norwegian PSC Research Center (NoPSC) was established 19th of May 2008 at the Medical Department, Rikshospitalet upon signing of a contract between the University of Oslo and Rikshospitalet on the handling of funds from Canica A/S. The funds are exclusively dedicated to research related to basic and clinical aspects of the chronic liver disease PSC.

NoPSC is now a separate center within the Clinic of Surgery, Inflammatory Medicine and Transplantation at Oslo University Hospital (OUH) Rikshospitalet, and is also affiliated with the Research Institute for Internal Medicine, OUH Rikshospitalet and the Institute of Clinical Medicine at the University of Oslo.

NoPSC has a broad range of both local and international collaborators (see annual reports for more information). NoPSC has also established the International PSC Study Group (www.ipscsg.org).   

Scientific and technical personnel at Norwegian PSC Research Center. Not present: Bjarte Fosby, Sigrid Næss, Natalie Lie Berntsen (photo: Hege Dahlen Sollid, OUS).

New Nature Genetics publication on how our genes orchestrate the bacterial landscape in our gut 

The human gut microbiota is an important determinant for health and disease. But what are the most important factors determining the composition of the gut microbiota? Lifestyle, medication and diet are among the factors known to be important contributors.

In a new study we find that our genes are also one of these key factors. We identify over 40 specific genes that contribute to shaping the gut microbiota. It was somewhat surprising that our genes also seem to be even more important for orchestrating the composition of the gut microbiota than our gender, diet and age combined, all variables that traditionally has been thought to be some of the strongest determinants of gut microbiota composition in healthy people.

One of the most important genes that were identified was the vitamin D receptor gene which is activated by bile acids made by the bacteria in our gut. It also interacts with several “healthy” fatty acids, like omega-3 and omega-6 fatty acids found in fish and seafood.

Overall, this study represents an important milestone in the work of understanding how humans interact with all the billions of bacteria that live in our gut, and lays the foundation for tremendous research opportunities in the future.

To read the article, please see:



NoPSC publishes study on the intestinal microbiota in mice with biliary disease in the Journal of Hepatology

Mice with liver disease have a gut microflora (microbiota) that differs substantially from normal mice. When these mice, that under normal circumstances spontaneously develops disease in their bile ducts, are raised in an environment devoid of bacteria, the disease in the bile ducts diminishes. Overall this clearly indicates that the bacteria in the gut (the gut microbiota) influences the liver disease in these mice. 



To read the article, please see:



NoPSC publishes study on gut and liver T cells in patients with PSC-IBD in the Journal of Hepatology   

Primary sclerosing cholangitis (PSC) is a devastating liver disease strongly associated with inflammatory bowel disease (IBD). The cause of PSC is unknown, but it has been suggested that the immune reactions in the gut and the liver are connected. Our data demonstrate for the first time that a proportion of the T cells in the gut and the liver react to similar triggers, and that this proportion is particularly high in patients with PSC and IBD.

To read the article, please see:



NoPSC publishes prevalence study of PSC in IBD in Gastroenterology

The true prevalence of primary sclerosing cholangitis (PSC) in inflammatory bowel disease (IBD) has so far not been properly investigated. In a collaboration between the Department of Radiology at Akershus University Hospital, the IBSEN study group and Norwegian PSC Research center, MRI cholangiography screening was performed in IBD patients with longstanding disease as part of the 20-year follow-up of the Inflammatory Bowel disease in South-Eastern Norway (IBSEN) study. The results have now been published in the prestigious journal Gastroenterology (2016 impact factor 18.19) with Aida Lunder from AHUS as first author.

The surprising finding of the study was a prevalence of PSC-like disease in about 8%, almost 4 times the number of patients with clinically acknowledged PSC in this patient cohort. These important results provide a new understanding of the disease process of sclerosing cholangitis in IBD and open new possibilities in the studies of pathogenetic and clinical aspects of the PSC-IBD relationship. 

A new way of thinking about disease
Can knowledge about a disease help us find a treatment for another illness? Definitely.... the message from four consortia that have mapped the genetic basis of five chronic inflammatory diseases. 
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