Related Experiment Videos
Absence of noxious effects of selected neuroleptics in dominant-lethal mutagenesis assay
Abstract:
In a dominant-lethal assay in mice the following tricyclic neuroleptics were tested: prothiaden, imipramine, oxyprothepin decanoate and docloxythepin. No dominant-lethal effect was induced by these neuroleptics, even when administered at doses many times as great as clinical doses. The reduced percentages of pregnancies, in females who had copulated with males receiving docloxythepin, observed during and immediately after its administration, were directly connected with marked sedation induced in the males by this neuroleptic.
Insights
Four tricyclic neuroleptics were tested for dominant-lethal effects in mice. None induced these effects, even at high doses, suggesting safety for reproductive health.
Area of Science:
- Pharmacology
- Toxicology
- Neuroscience
Background:
- Tricyclic neuroleptics are commonly prescribed for various neurological and psychiatric conditions.
- Assessing the reproductive toxicity of these widely used medications is crucial for patient safety.
Purpose of the Study:
- To evaluate the potential for dominant-lethal effects in mice treated with specific tricyclic neuroleptics.
- To determine if prothiaden, imipramine, oxyprothepin decanoate, and docloxythepin pose a risk to reproductive health.
Main Methods:
- A dominant-lethal assay was conducted using male mice.
- Mice were administered escalating doses of prothiaden, imipramine, oxyprothepin decanoate, and docloxythepin.
- Male mice were mated with untreated females to assess for dominant-lethal mutations.
Main Results:
- No dominant-lethal effects were observed for any of the tested neuroleptics, even at supra-clinical doses.
- A temporary reduction in pregnancy rates was noted with docloxythepin, linked to induced male sedation.
- Sedation in males did not translate to genotoxic effects on reproductive cells.
Conclusions:
- The tested tricyclic neuroleptics (prothiaden, imipramine, oxyprothepin decanoate, docloxythepin) do not appear to induce dominant-lethal mutations in mice.
- Docloxythepin's transient effect on pregnancy is attributed to behavioral sedation, not reproductive toxicity.