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Biliary bile acid composition in Wilson's disease.

A E Cowen, M G Korman, A F Hofmann

Mayo Clinic Proceedings

|May 1, 1975

Summary

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Wilson's disease patients show normal bile acid metabolism but delayed clearance of a specific bile acid conjugate. This suggests a sensitive new test for assessing liver function in this genetic disorder.

Area of Science:

Hepatology
Biochemistry
Genetic Disorders

Background:

Wilson's disease is a rare genetic disorder affecting copper metabolism.
Liver function tests in Wilson's disease patients may appear normal despite underlying pathology.
Bile acid metabolism is crucial for liver function and detoxification.

Purpose of the Study:

To investigate bile acid metabolism and conjugation in Wilson's disease patients.
To evaluate the diagnostic utility of bile acid clearance tests for hepatic excretory function.
To determine if Wilson's disease involves a primary bile acid metabolism disturbance.

Main Methods:

Analysis of biliary bile acid composition and conjugation patterns.
Measurement of serum bile acid conjugate levels using radioimmunoassay.

Related Experiment Videos

Assessment of plasma disappearance rate for intravenously injected glycine conjugate of cholic acid.

Main Results:

Biliary bile acid composition and conjugation were normal in all patients.
Serum bile acid conjugate levels were not elevated.
Plasma clearance of injected glycine conjugate of cholic acid was significantly delayed in all subjects.

Conclusions:

Wilson's disease does not appear to involve a primary defect in bile acid metabolism.
Delayed plasma disappearance of glycine conjugate of cholic acid indicates impaired hepatic excretory function.
This clearance test may serve as a sensitive biomarker for assessing liver function in Wilson's disease.