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  • Title: [Determination of serum activity of glucose phosphate isomerase and glutathione reductase in intra and extra hepatic cholestasis.(author's transl)].
    Author: Tor J, Segura RM, Pascual C, Vilaseca J, Guarner ML, Schwartz S.
    Journal: Med Clin (Barc); 1981 Oct 10; 77(6):236-9. PubMed ID: 7321637.
    Abstract:
    Serum activity of glutathione reductase (GR), glucose phosphate isomerase (GPI), aspartate aminotransferase (AST), alanine aminotransferase (ALT) phosphate alkaline (PAL), and gamma-glutamyl transferase (GGT) was studied in 142 patients, in all serum bilirubin was more than 2 mg/dl. Distribution was as follows; 68 cirrhosis of the liver; 27 acute hepatitis; 31 benign extra-hepatic biliary obstruction; and 16 neoplastic obstruction of the biliary tract without liver metastasis. Fifty-three healthy volunteer blood donors were used as the control group. Mean values for GR activity in our patients were significantly higher than those for the control group, although less so in benign obstruction (p less than 0.01) than in those with acute hepatitis (p less than 0.001), cirrhosis (p less than 0.01) and neoplasic biliary obstruction (p less than 0.001). The GPI values were higher than the control groups in patients with acute hepatitis (p less than 0.001) and obstructive neoplastic jaundice (p less than 0.02). In cases with cirrhosis, 87% presented slightly higher values of GR, while GPI was within normal levels in 93 % of all cases. In patients with acute hepatitis, 92% showed a definite increase in GPI and GR values. In 71% of those with benign biliary obstruction levels for both enzymes were normal, as they were in only 6% of those with obstructive neoplastic jaundice. These findings are statistically significant in all cases and of diagnostic value in establishing a differential enzymatic diagnosis in patients presenting with clinical and biological patterns of cholestasis.
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