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Osteosarcomas in BALB/c female mice
Laboratory Animal Science
|February 1, 1982
Summary
2-acetylaminofluorene did not impact osteosarcoma development in female BALB/c mice. The chemical carcinogen showed no significant difference in tumor incidence, type, or metastasis compared to controls.
Area of Science:
- Oncology
- Toxicology
- Genetics
Background:
- Osteosarcomas are malignant bone tumors with varying incidence rates.
- Chemical carcinogens are often studied for their potential to induce or influence tumor development.
- BALB/c mice are a common strain used in biomedical research, including cancer studies.
Purpose of the Study:
- To investigate the effect of 2-acetylaminofluorene on osteosarcoma development in female BALB/c mice.
- To determine if 2-acetylaminofluorene influences the incidence, type, or metastatic potential of osteosarcomas.
Main Methods:
- A cohort of 24,192 female BALB/c mice was analyzed.
- Mice were divided into two groups: 2-acetylaminofluorene-treated and untreated controls.
- Osteosarcomas were identified, classified (osteoblastic, fibroblastic, mixed), and examined for metastasis.
Main Results:
- Osteosarcomas occurred in 0.066% of all mice.
- The incidence (0.064%) and characteristics of osteosarcomas in 2-acetylaminofluorene-treated mice were similar to untreated controls (0.084%).
- Seven osteosarcomas metastasized to the lungs, with no significant difference between treatment groups.
Conclusions:
- 2-acetylaminofluorene does not appear to affect the development, type, or metastatic potential of osteosarcomas in female BALB/c mice.
- The study suggests that 2-acetylaminofluorene is not a significant factor in osteosarcoma induction in this specific mouse model.