Serum gamma-glutamyl transpeptidase activity in myocardial ischaemia.

Gamma-glutamyl-transpeptidase in myocardial infarction. Clinical and experimental studies.

Nonutility of measurement of serum gamma-glutamyl transpeptidase activities in diagnosis of myocardial disease.

We have examined the usefulness of measuring gamma-glutamyl transpeptidase activity in serum, in diagnosing myocardial damage. Abnormalities in gamma-glutamyl transpeptidase activity were compared with those observed for aspartate aminotransferase, lactate dehydrogenase isoenzymes, creatine kinase, alanine aminotransferase, and alkaline phosphatase. Such measurements were made for 12 consecutiv...

Gamma-glutamyl Transpeptidase Activity in Human Fetal Lung-derived Cells

Gamma-glutamyl transpeptidase (GGT, EC 2.3.2.2) a membrane-associated enzyme is a main regulator of glutathione (GSH) levels. The enzyme is not only the inhibitor of apoptosis induced by oxidative stress, but it is engaged in anti-tumor drug cell resistance and is considered as a marker for neoplastic changes, cell differentiation and aging. The surface and total activities of GGT in unfixed, f...

Gamma-glutamyl transpeptidase in cancer diagnosis.

Serum gamma-glutamyl transpeptidase ( G G T ), alkaline phosphatase (A L P ) and aspartate aminotransferase (A ST) were assayed in patients with cancer. GGT was more sensitive than either ALP or AST in detecting metastatic car­ cinoma to the liver in both icteric and anicteric patients with cancer. Extremely high activities of GGT were seen in patients with hepatoma, carcinoma of the pancreas a...

Gamma-glutamyl transpeptidase--its role in hepatocarcinogenesis.

Introduction The enzyme gamma-glutamyl transpeptidase (GGT)* is widely used as a marker in preneoplastic lesions in the liver during chemical carcinogenesis (1). The discovery of a link between GGT and liver carcinogenesis first occurred in 1972 when Fiala and co-workers reported elevated levels of the enzyme in livers of rats fed the hepatocarcinogen 3'-methyl-4dimethylaminoazobenzene and also...