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239Plutonium-induced heritable translocations in male mice
Mutation Research
|October 1, 1985
Summary
Exposure to alpha particles from plutonium-239 citrate can induce heritable translocations in spermatogonia stem cells. The rate of these genetic mutations increases linearly with exposure duration.
Area of Science:
- Radiation biology
- Genetics
- Toxicology
Background:
- Alpha particle exposure from radionuclides like plutonium-239 poses risks.
- Understanding genetic damage from radiation is crucial for risk assessment.
Purpose of the Study:
- To quantify the frequency of transmitted reciprocal translocations induced by alpha particle exposure.
- To determine the relationship between radiation dose and translocation induction in spermatogonia stem cells.
Main Methods:
- Utilizing [239Pu]citrate to deliver alpha particle radiation.
- Exposing spermatogonia stem cells to controlled doses of alpha particles.
- Analyzing the frequency of heritable translocations in subsequent gametes.
Main Results:
- A linear relationship was observed between exposure duration and translocation induction.
- The estimated increase in heritable translocations was 1.45-2.91 X 10(-5) per rad per gamete.
Conclusions:
- Alpha particle exposure from [239Pu]citrate induces heritable translocations in a dose-dependent manner.
- Spermatogonia stem cells are susceptible to radiation-induced genetic damage.
