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Related Experiment Videos

Micronucleus test with cyclophosphamide using mouse peripheral blood reticulocytes.

Y Hatanaka1, Y Kitagawa, Y Toyoda

  • 1Suntory Ltd., Osaka, Japan.

Mutation Research
|February 1, 1992
PubMed
Summary

This study validates a new micronucleus test using peripheral blood reticulocytes. The method reliably detects genetic damage from cyclophosphamide in mice, offering a viable alternative to traditional bone marrow analysis.

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Area of Science:

  • Toxicology
  • Genetics
  • Biomedical Science

Background:

  • The micronucleus test is a standard method for assessing genotoxicity.
  • Evaluating peripheral blood reticulocytes offers a less invasive alternative to bone marrow sampling.

Purpose of the Study:

  • To evaluate the utility of the micronucleus test on peripheral blood reticulocytes.
  • To compare this method with the traditional bone marrow micronucleus test.

Main Methods:

  • CD-1 mice were administered cyclophosphamide (CYP) intraperitoneally.
  • Peripheral blood reticulocytes were stained supravitally with acridine orange.
  • Frequencies of micronucleated peripheral reticulocytes (MNRETs) were analyzed.

Main Results:

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  • MNRETs showed a dose-dependent increase following CYP administration.
  • Results were consistent across two independent laboratories.
  • MNRET induction timing was delayed compared to bone marrow micronucleated polychromatic erythrocytes (MNPCEs), but frequencies were comparable.

Conclusions:

  • The peripheral blood micronucleus test is a reliable and reproducible method.
  • This technique serves as a suitable alternative to bone marrow analysis for genotoxicity assessment.