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  • Title: The apoenzyme of aspartate aminotransferase and alanine aminotransferase in the serum of healthy persons and patients suffering from liver diseases.
    Author: Jung K, Ohlrich B, Mildner D, Zubek A, Schimmelpfennig W, Egger E.
    Journal: Clin Chim Acta; 1978 Dec 01; 90(2):143-9. PubMed ID: 719898.
    Abstract:
    In activity determination with addition of pyridoxal 5'-phosphate (P-5-P), aspartate aminotransferase (AST) activity increases by 6.5 U/l and that of alanine aminotransferase (ALT) by 2.5 U/l in the serum of healthy persons. This corresponds to a relative stimulation of initial activity by 37% and 15.2%, respectively. ApoAST activity in patients with chronic liver diseases is not changed as compared with that of healthy persons, the relative stimulation rate, however, is significantly smaller. ApoALT activity and corresponding relative stimulation is significantly greater as compared with healthy persons. In the case of acute viral hepatitis, a decrease of AST and ALT activity is followed by a decrease of apoenzyme activity in the course of disease. Diagnostic evidence of determinations of aminotransferase activities could not be improved by addition of P-5-P.
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