Adenosine deaminase, 5′-nucleotidase, xanthine oxidase, superoxide dismutase, and catalase activities in gastric juices from patients with gastric cancer, ulcer, and atrophic gastritis
- 1 April 1994
- journal article
- research article
- Published by Springer Science and Business Media LLC in Digestive Diseases and Sciences
- Vol. 39 (4), 721-728
- https://doi.org/10.1007/bf02087413
Abstract
Adenosine deaminase (ADA), 5′-Nucleotidase (5NT), Xanthine oxidase (XO), Cu-Zn Superoxide dismutase (SOD) and Catalase (CAT) activities were determined in gastric juices from patients with gastric cancer, ulcer, gastritis and from healthy subjects. Enzyme activities were given as units per ml gastric juice and units per mg protein in gastric juice. ADA, 5NT and XO activities were found lower and protein concentrations were found higher in the cancer group than controls. There was however no significant difference between Cu-Zn SOD activities of the cancer and control groups. In all groups including control one, we could not find catalase activities in most of the samples. On the other hand, ADA, 5NT activities and protein concentrations in the gastric juice were lower in the gastritis group than control group. In the ulcer group, we found higher Cu-Zn SOD and XO activities and lower 5NT activity and protein concentrations compared with control values. In an attempt to establish statistical correlations between mean enzyme activities, pH and protein concentrations in the gastric juices of the groups, we found noticeable intra and inter-correlations, which indicated possible relations between DNA and free radical metabolizing enzymes.Keywords
This publication has 61 references indexed in Scilit:
- Reactive oxygen-mediated damage to murine mammary tumor cellsMutation Research, 1989
- Stimulation of hydroperoxide generation in mouse skins treated with tumor-promoting or carcinogenic agents in vivo and in vitroCancer Letters, 1988
- Changes in lung activity of superoxide dismutase and copper concentration during lung tumorigenesis by hydralazine in Swiss miceExperimental pathology, 1987
- Are free radicals involved in tumor promotion?Chemico-Biological Interactions, 1985
- On the role of superoxide anion radicals in skin tumour promotionCarcinogenesis: Integrative Cancer Research, 1984
- Promoting effect of 4-dimethylaminoazobenzene on enzyme altered foci induced in rat liver by N-nitrosodiethanolamineCarcinogenesis: Integrative Cancer Research, 1984
- Age-dependent changes in rat liver microsomal and mitochondrial NADPH-dependent lipid peroxidationBiochemical and Biophysical Research Communications, 1977
- Adriamycin: The Role of Lipid Peroxidation in Cardiac Toxicity and Tumor ResponseScience, 1977
- Superoxide dismutase and glutathione peroxidase activities in tumorsFEBS Letters, 1977
- Malignant transformation‐linked imbalance: Decreased xanthine oxidase activity in hepatomasFEBS Letters, 1975