Related Experiment Video
Updated: Sep 12, 2025
A Mouse Model of Chronic Liver Fibrosis for the Study of Biliary Atresia
Published on: February 3, 2023
Decrease of Post-Portoenterostomy Liver Fibrosis in a Nationally Centralized Cohort of Biliary Atresia Patients
Mikko P Pakarinen1, Maria Hukkinen2, Iiris Nyholm3
1Section of Pediatric Surgery, Pediatric Liver and Gut Research Group, New Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Pediatric Research Center, Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Department of Women's and Children's Health, Karolinska Institute, Stockholm, Sweden.
In biliary atresia (BA) patients, liver fibrosis decreased in 40% after Kasai portoenterostomy (KPE), improving native liver survival. This reduction correlated with resolved cholestasis and lower bilirubin levels.
Area of Science:
- Hepatology
- Pediatric Surgery
- Gastroenterology
Background:
- Biliary atresia (BA) is the primary cause of pediatric liver disease, with Kasai portoenterostomy (KPE) being a critical surgical intervention.
- Liver fibrogenesis dynamics post-KPE remain poorly understood, despite its significance in BA pathology.
- Standardized management and follow-up protocols are crucial for assessing outcomes in BA patients.
Purpose of the Study:
- To analyze clinical outcomes and native liver (NL) fibrosis progression after KPE in a national BA cohort.
- To investigate the relationship between changes in liver fibrosis and patient survival.
- To evaluate the impact of fibrosis dynamics on cholestasis resolution.
Main Methods:
- Prospective analysis of NL liver biopsies, serum samples, and liver stiffness measurements from 66 BA patients post-KPE (2005-2024).
- Fibrosis staging using Metavir fibrosis stage (MFS) by two pathologists.
- Correlation of fibrosis scores with clinical data, including bilirubin levels and survival.
Main Results:
- 40% of patients showed a 1-2 stage decrease in MFS on follow-up biopsies.
- Decreased fibrosis was significantly associated with improved NL survival (HR=11.5, P=0.0182).
- Fibrosis reduction correlated with jaundice clearance and sustained lower serum bilirubin levels.
Conclusions:
- A decrease in liver fibrosis occurs in a significant proportion of BA patients following successful KPE.
- Reduced histopathological liver fibrosis is a positive prognostic indicator for long-term native liver survival.
- Sustained resolution of cholestasis and lower bilirubin levels are linked to improved fibrosis outcomes.
