Back to Search
Start Over
Effects of Zinc Acexamate (NAS-501) on Superoxide Radicals and Lipid Peroxidation of Rat Gastric Mucosa.
- Source :
-
Pharmacology . Apr99, Vol. 58 Issue 4, p209-219. 11p. 1 Diagram, 8 Graphs. - Publication Year :
- 1999
-
Abstract
- Zinc acexamate (NAS-501), an anti-ulcer agent, has been reported to prevent various acute experimental gastric mucosal lesions and duodenal ulcers in rats. In order to clarify the mechanisms by which NAS-501 exhibits the anti-ulcer effects, we investigated the anti-oxidative effects of NAS-501 in vitro and in vivo. NAS-501 significantly reduced the superoxide radical-dependent chemiluminescence, generated by hypoxanthine-xanthine oxidase, rat neutrophils and guinea-pig macrophages in vitro. These in vitro effects were also confirmed by electron spin resonance using a 5,5-dimethyl-1-pyrroline-N-oxide spin-trapping method. In addition, NAS-501 significantly inhibited lipid peroxidation induced by increasing concentrations of Fe[sup 2+] /ascorbate in rat gastric mucosal homogenate in vitro. Oral administration of NAS-501 (30 mg/kg) significantly inhibited production of thiobarbituric acid-reactive substance in rat gastric mucosa following per os instillation of 60% ethanol in 150 mmol/l HCl in vivo. These results suggest that NAS-501 exhibits the preventive effect from acute gastric mucosal lesions by the anti-oxidative activity. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GASTRIC mucosa
*LABORATORY rats
*ANTIULCER drugs
*SUPEROXIDES
*NEUTROPHILS
*DISEASES
Subjects
Details
- Language :
- English
- ISSN :
- 00317012
- Volume :
- 58
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Pharmacology
- Publication Type :
- Academic Journal
- Accession number :
- 11334064
- Full Text :
- https://doi.org/10.1159/000028283