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We have been determining the GGT IE isoenzyme in patients with hepatitis A and B with decomposed liver cirrhosis, with obstructive hepatitis caused by the gall stones. In patients with hepatitis A and B the IE is located between albumin and betaglobulin, as well as in patients with obstructive hepatitis caused by the gall stones; in the latter partly between Alpha 1 and Alpha 2 globulin. In patients with decompensated liver cirrhosis (37.7% of the patients) there was IE activity 100% in Alpha 2 globulin area; in 6.25% of patients the activity was in the prealbumin area. In patients with secondary liver tumors we got a rather high increase of the GGT IE activity in Alpha 1 globulin area, in 77.7% of the patients even 80 to 100%. In some patients with disease progression we noticed the GGT IE activity in Beta globulin area. The results in primary liver malignomas were different. In 68.5% of the patients the GGT IE activity dominated in Alpha 1 globulin area.

Determination of CHE has already been proven as a useful test in the diagnosis of liver diseases. Our investigation included 2 groups of patients: a group suffering from parenchym hepatitis caused by virus infection A and B, and a second group of patients suffering from etiologically different obstructive hepatitis (malign and benign obstruction). Our tests show that there is lower CHE activity in patients with hepatitis B. There is a remarkable difference of CHE activity in benign and malign obstructive hepatitis.