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Published on: March 10, 2015
[The genotoxicity and carcinogenic potential of gastrofenzin]
1National Centre of Hygiene, Sofia.
Abstract:
Genotoxicity of the Bulgarian drug gastrophensin was studied by using a battery of two genotoxicity assays "in vitro" - Salmonella/mutation assay and "in vivo" - the rodent bone marrow micronucleus test. Mutagenicity of water solution of gastrophensin towards Salmonella "in vitro" - the rodent bone marrow micronucleus test. Mutagenicity of water solution of gastrophensin towards Salmonella "in vitro" was tested in five mutant, histidine auxotrophic strains - TA 1535, TA 1537, TA 1538, TA 98 and TA 100 without and in the presence of metabolic activation (+/- S9) at concentration of 0.4, 2 and 10 mg center dot ml-1. Gastrophensin did not induce mutagenic response in the Salmonella/mutation assay in a range of tested concentrations in both series of assays (+/- S9). Gastrophensin did not induce micronuclei in bone marrow cells of male C57Bl6 mice at 24, 48 and 72 hours after single oral treatment with 236 mg center dot kg-1 (80% DL50 oral, mice) and 118 mg center dot kg-1 (40% DL50 oral, mice). Based on the present data a conclusion of the lack of mutagenicity and of carcinogenic potency of gastrophensin was made.
Insights
The Bulgarian drug gastrophensin showed no mutagenic effects in Salmonella assays or genotoxicity in mouse bone marrow micronucleus tests. These findings suggest gastrophensin lacks mutagenicity and carcinogenic potential.
Area of Science:
- Pharmacology
- Toxicology
- Genetics
Background:
- Gastrophensin is a Bulgarian drug requiring safety evaluation.
- Genotoxicity testing is crucial for assessing drug safety and potential carcinogenicity.
Purpose of the Study:
- To evaluate the genotoxic potential of gastrophensin using in vitro and in vivo assays.
- To determine if gastrophensin exhibits mutagenic or carcinogenic properties.
Main Methods:
- In vitro: Salmonella/mutation assay (Ames test) with five mutant strains (+/- S9 metabolic activation) at various concentrations.
- In vivo: Rodent bone marrow micronucleus test in male C57Bl6 mice following single oral administration at 80% and 40% of the LD50.
Main Results:
- Gastrophensin did not induce mutagenic responses in the Salmonella/mutation assay across all tested concentrations and conditions.
- No significant increase in micronuclei formation was observed in mouse bone marrow cells at tested doses and time points.
Conclusions:
- Gastrophensin demonstrates a lack of mutagenicity based on the Salmonella/mutation assay.
- In vivo genotoxicity tests confirm that gastrophensin does not induce DNA damage in mouse bone marrow cells.
- The study concludes that gastrophensin possesses neither mutagenic nor carcinogenic potential.
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