Omeprazole: an exploration of its reported genotoxicity
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1Department of Environmental and Occupational Health, Graduate School of Public Health, University of Pittsburgh, PA 15261.
Abstract:
Because of its reported ability to induce unscheduled DNA synthesis in the gastric mucosa, the safety of omeprazole, a potentially clinically useful anti-ulcer drug, has been the subject of debate. We have undertaken a detailed computer-based study of structural basis of the putative mutagenicity, genotoxicity and carcinogenicity in rodents of omeprazole and of its sulphenimide, and we conclude that omeprazole is a potential 'genotoxic' carcinogen. The analysis is consistent with the possibility that these activities are associated with the unstable sulphenimide metabolite.
Insights
Omeprazole, an anti-ulcer drug, may be a genotoxic carcinogen due to its unstable sulphenimide metabolite. Further computer-based analysis supports concerns about its potential mutagenicity and genotoxicity in rodents.
Area of Science:
- Pharmacology
- Toxicology
- Molecular Biology
Background:
- The safety of omeprazole, a widely used anti-ulcer medication, is debated due to its potential to induce unscheduled DNA synthesis in gastric mucosa.
- Concerns exist regarding the mutagenicity, genotoxicity, and carcinogenicity of omeprazole, particularly in rodent models.
Purpose of the Study:
- To conduct a detailed computer-based investigation into the structural basis of omeprazole's putative mutagenicity, genotoxicity, and carcinogenicity.
- To evaluate the role of the sulphenimide metabolite in these potential adverse effects.
Main Methods:
- Utilized computer-based analysis to study the chemical structure of omeprazole and its sulphenimide metabolite.
- Assessed the structural features associated with potential genotoxic and carcinogenic activities.
Main Results:
- The study concluded that omeprazole is a potential genotoxic carcinogen.
- Structural analysis indicated that the unstable sulphenimide metabolite is likely associated with these genotoxic and carcinogenic activities.
Conclusions:
- Omeprazole's potential genotoxicity and carcinogenicity are linked to its sulphenimide metabolite.
- The findings warrant further investigation into the long-term safety of omeprazole, especially concerning its genotoxic potential.