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Clinical Chemistry 27: 1392-1396, 1981;
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Clinical Chemistry, Vol 27, 1392-1396, Copyright © 1981 by American Association for Clinical Chemistry

Usefulness of serum nucleotide pyrophosphatase and phosphodiesterase I activities in classifying liver disease

HF Haugen, S Ritland, JP Blomhoff, HE Solberg and S Skrede

Nucleotide pyrophosphatase and phosphodiesterase I activities were determined in sera from 126 patients with different types of liver disease and in two additional groups of patients with intra- and extrahepatic cholestasis, respectively. Both activities probably represent the same enzyme, and were positively correlated with alkaline phosphatase, lipoprotein X, and several other tests reflecting cholestasis. Also, we found by discriminant analysis that tests for cholestasis frequently replaced the results of both enzymes. In some groups of liver disease, nucleotide pyrophosphatase and phosphodiesterase I were correlated with the concentrations of prealbumin and albumin. The sensitivity of phosphodiesterase I (and nucleotide phosphatase) is rather low when compared with alkaline phosphatase, and we do not recommend it for use in the clinical routine. Nevertheless, it appears to be of potential value for studies on classification of liver diseases, adding information to a panel of 20 commonly used "liver tests" by appearing in some of the best four test-sets for distinguishing between groups of liver disease by discriminant analysis.




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Copyright © 1981 by the American Association for Clinical Chemistry.