The catalytic activities of some mitochondrial and cytoplasmic enzymes were measured in plasma from 19 patients after orthotopic liver transplantation, in order to detect and monitor the evolution of hepatocellular damage and to predict liver rejection. The enzymatic activities determined were: mitochondrial isoenzyme of aspartate aminotransferase, glutamate dehydrogenase, alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltranspeptidase and alkaline phosphatase. The results of all enzymatic activities were normalized by expressing them as multiples of the upper limit of the relevant reference range and then the necrosis index (NI) has been calculated. The proposed NI consists of percent ratio of the normalized mitochondrial enzymatic activities over the sum of cytoplasmic and mitochondrial normalized activities. We observed that NI values higher than 30% correctly identified all but two acute rejection events which were documented by liver biopsies showing a diagnostic sensitivity of 90%, specificity of 78% and a predictive value of 90%.

Gozzo, M. L., Avolio, A. W., Forni, F., Agnes, S., Colacicco, L., Barbaresi, G., Castagneto, M., Enzymatic determinations in acute rejection after liver transplantation: preliminary report on necrosis index, <<CLINICA CHIMICA ACTA>>, 1993; 214 (2): 175-184 [http://hdl.handle.net/10807/37199]

Enzymatic determinations in acute rejection after liver transplantation: preliminary report on necrosis index

Gozzo, Maria Luisa;Avolio, Alfonso Wolfango;Forni, Franca;Agnes, Salvatore;Colacicco, Luigi;Castagneto, Marco
1993

Abstract

The catalytic activities of some mitochondrial and cytoplasmic enzymes were measured in plasma from 19 patients after orthotopic liver transplantation, in order to detect and monitor the evolution of hepatocellular damage and to predict liver rejection. The enzymatic activities determined were: mitochondrial isoenzyme of aspartate aminotransferase, glutamate dehydrogenase, alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltranspeptidase and alkaline phosphatase. The results of all enzymatic activities were normalized by expressing them as multiples of the upper limit of the relevant reference range and then the necrosis index (NI) has been calculated. The proposed NI consists of percent ratio of the normalized mitochondrial enzymatic activities over the sum of cytoplasmic and mitochondrial normalized activities. We observed that NI values higher than 30% correctly identified all but two acute rejection events which were documented by liver biopsies showing a diagnostic sensitivity of 90%, specificity of 78% and a predictive value of 90%.
1993
Inglese
Gozzo, M. L., Avolio, A. W., Forni, F., Agnes, S., Colacicco, L., Barbaresi, G., Castagneto, M., Enzymatic determinations in acute rejection after liver transplantation: preliminary report on necrosis index, <<CLINICA CHIMICA ACTA>>, 1993; 214 (2): 175-184 [http://hdl.handle.net/10807/37199]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/37199
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