Abstract
Fasting serum bile acid (SBA) was measured by the enzymic fluorimetric method coupled with the NAD-resazurin system in 23 controls, 35 asymptomatic carriers of HBs antigen including 4 e antigen carriers and 91 patients with various liver diseases. All HBs and e antigen carriers showed SBA within the normal range. SBA was most significantly correlated with serum bilirubin (γ = 0.74) and was a more sensitive index for impaired liver function than bilirubin or alkaline phosphatase in 164 randomly chosen samples from the liver disease group. In serial determinations of SBA with reference to GOT, GPT, changing patterns of these two parameters were classified into the parallel type and the discrepant type. Thirty two out of 40 cases with chronic liver disease belonged to the parallel type. SBA remained abnormal even after the normalization of transaminase in 12 out of 20 resolving episodes in cases of the parallel type, regardless of diagnosis. Since SBA changed according to the stage of the disease activity, serial and simultaneous estimation of SBA and GOT, GPT was found to be helpful in the observation of liver diseases. Maximum values of SBA elevation in an endogenous bile acid tolerance test after eating two egg yolks were higher than controls in 4 out of 7 cases with liver disease, who were associated with normal fasting SBA.
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