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Effect of ursodeoxycholic acid therapy on hepatic function in children with intrahepatic cholestatic liver disease
M R Narkewicz1, D Smith, C Gregory
1Department of Pediatrics, University of Colorado School of Medicine, Denver, USA.
Insights
Ursodeoxycholic acid (UDCA) improved itching and liver enzymes in children with cholestatic liver disease. However, it did not enhance quantitative measures of liver function in this pediatric population.
Area of Science:
- Pediatric Hepatology
- Gastroenterology
- Pharmacology
Background:
- Intrahepatic cholestatic liver disease affects children, causing symptoms like pruritus and biochemical abnormalities.
- Ursodeoxycholic acid (UDCA) is used to manage these conditions, but its impact on quantitative liver function tests in pediatric patients remains unclear.
Purpose of the Study:
- To evaluate the effect of Ursodeoxycholic acid (UDCA) on clinical symptoms, biochemical markers, and quantitative measures of hepatic function in children with intrahepatic cholestasis.
Main Methods:
- A 2.5-year open-label crossover study involving 13 children with intrahepatic cholestasis.
- UDCA was administered at 15-20 mg/kg/day for 12 months, followed by a 6-month washout, and then another 12 months of treatment.
- Assessed clinical symptoms, liver enzymes (ALT, gamma-glutamyl transpeptidase), mineral levels, and quantitative tests including galactose and caffeine elimination half-lives (t1/2) and hepatic scintigraphy.
Main Results:
- UDCA improved pruritus in affected patients and significantly reduced ALT, gamma-glutamyl transpeptidase, copper, and manganese levels at 12 months.
- Galactose elimination half-life (t1/2) increased after 12 months of UDCA, but caffeine t1/2 and hepatic scintigraphy showed no significant changes.
- Discontinuation of UDCA led to a rapid increase in ALT or worsening pruritus, prompting re-initiation of therapy in most patients.
Conclusions:
- Ursodeoxycholic acid (UDCA) effectively alleviates pruritus and improves certain biochemical markers like ALT in pediatric intrahepatic cholestasis.
- Despite these improvements, UDCA therapy did not demonstrate a significant positive impact on quantitative measures of liver function, such as elimination half-lives or scintigraphy, in this study population.
Background:
Ursodeoxycholic acid (UDCA) has been shown to improve pruritus, alanine aminotransferase (ALT), and cholesterol levels in children with intrahepatic cholestatic liver disease. However, the effect of UDCA on quantitative tests of hepatic function in children is uncertain.
Methods:
A 2.5-year, open label, crossover study, was designed to determine the effect of UDCA (15-20 mg/kg per day for 12 months, off for 6 months, and on again for 12 months) on clinical symptoms, biochemical test results, galactose and caffeine elimination half-lives (t1/2), and quantitative hepatic scintigraphy in 13 subjects aged 13.1 +/- 2.1 years (10 of whom completed the entire study), with intrahepatic cholestasis.
Results:
Pruritus improved with UDCA in the 6 patients with pruritus on entry into the study. At 12 months, there was a significant decline in ALT, gamma-glutamyl transpeptidase, and plasma levels of copper and manganese, with no further decline in these levels at 24 months. There were no changes in bilirubin or cholylglycine levels. After therapy was discontinued at 12 months, UDCA was restarted within 1 month in 9 of 12 patients in response to a doubling of ALT (n = 6) or worsening pruritus (n = 3). Galactose t1/2 increased after 12 months, with no further increases after 24 months of UDCA therapy, whereas caffeine t1/2 did not change. There were no significant changes in hepatic scintigraphy throughout the study.
Conclusions:
These data suggest that although UDCA therapy improves pruritus and results in a reduction in ALT and gamma-glutamyl transpeptidase, UDCA therapy did not improve quantitative measures of hepatic function in children with intrahepatic cholestasis.
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