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Multiple osteomas in mice

H Höger1, J Gialamas, F Jelinek

  • 1Research Institute for Laboratory Animal Breeding, University of Vienna, Himberg, Austria.

Veterinary Pathology
|July 1, 1994
PubMed
Summary
This summary is machine-generated.

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Osteomas, rare bone tumors in mice, were found in over half of Him:OF1 mice studied. These bone neoplasms showed a predilection for the skull and limb bones, with elevated alkaline phosphatase levels.

Area of Science:

  • Veterinary Pathology
  • Oncology
  • Mouse Models

Background:

  • Osteomas are dense compact neoplasms of mature bone tissue.
  • Osteomas are generally rare in most mouse strains.
  • This study investigates osteoma prevalence and characteristics in Him:OF1 mice.

Purpose of the Study:

  • To determine the incidence of osteomas in Him:OF1 mice.
  • To characterize the location and associated biochemical changes of osteomas.
  • To examine the ultrastructure of osteomas.

Main Methods:

  • Longitudinal study of 224 Him:OF1 mice until natural death or terminal illness.
  • Macroscopic and radiographic examination for osteoma detection.
  • Plasma alkaline phosphatase level measurement.

Related Experiment Videos

  • Histologic and electron microscopic examination of osteomas.

    • Main Results:

    • Osteomas were observed in 116 out of 224 (51.8%) Him:OF1 mice.
    • Osteomas predominantly occurred on the skull and larger limb bones.
    • Significantly elevated plasma alkaline phosphatase levels were noted in mice with osteomas.
    • Virus-like structures were identified in osteoblasts, osteocytes, and fibroblasts within osteomas.

    Conclusions:

    • Him:OF1 mice exhibit a high incidence of osteomas, contrary to their rarity in other strains.
    • Elevated alkaline phosphatase may serve as a biomarker for osteoma development in this model.
    • The presence of virus-like structures suggests a potential viral etiology for osteomas in Him:OF1 mice.