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Computed tomography is a feasible method for quantifying bone density in Macaca mulatta.

Salvador A Solís-Chávez1,2,3,4, Manuel A Castillo-Rivera5, Marcela Arteaga-Silva6

  • 1Doctoral Program in Biological Sciences and Health, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, Mexico.

Veterinary Radiology & Ultrasound : the Official Journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association
|May 6, 2018
PubMed
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Bone density decreases in rhesus monkeys around age 20, indicating an aging-related decline. This study establishes a primate model using CT scans for future research into osteopathologies.

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Area of Science:

  • Comparative anatomy
  • Biomedical engineering
  • Primate research

Background:

  • Osteopathologies, linked to aging and reduced bone density, pose a global health challenge.
  • Longitudinal studies are crucial for understanding pathophysiology, improving early diagnosis, and developing preventive therapies for bone diseases.
  • Computed tomography (CT) offers comprehensive data for bone health evaluation, surpassing other imaging techniques.

Purpose of the Study:

  • To standardize a primate model for longitudinal bone pathology research.
  • To obtain baseline measurements of the left femur in a captive rhesus monkey population.
  • To investigate age-related changes in bone density and structure.

Main Methods:

  • A prospective pilot study involving 32 healthy rhesus monkeys aged 5-28 years.
  • Monkeys were categorized into three age groups: 5-9, 10-19, and 20-28 years.
  • Semi-automatic CT image segmentation identified trabecular (300-700 HU) and cortical (>700 HU) bone regions to calculate volume proportions.

Main Results:

  • Significant differences in Hounsfield units and bone proportions were observed across age groups.
  • Analysis of variance confirmed age-related changes in bone density.
  • A decrease in bone density was identified as beginning around 20 years of age in the studied population.

Conclusions:

  • The study successfully standardized a CT-based method for assessing bone density in rhesus monkeys.
  • The findings provide a baseline for future long-term research on bone pathology in a primate model.
  • This research supports the development of improved diagnostic and therapeutic strategies for age-related bone diseases.