Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (20): 3164-3169.doi: 10.3969/j.issn.2095-4344.2017.20.009

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Different dosages of retinoic acid to establish a rat model of osteoporosis: a stability evaluation

Sun Shi-dong1, Liang Qi-bin2, Fan Wei-zhi3, Zeng Zhan-peng1, Chen Bo-xing3   

  1. 1Department of Traumatic Orthopedics, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China; 2Department of Orthopedics, Guangzhou Orthopedic Hospital, Guangzhou 510045, Guangdong Province, China; 3Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Revised:2017-05-27 Online:2017-07-18 Published:2017-07-28
  • Contact: Zeng Zhan-peng, Master, Professor, Master’s supervisor, Department of Traumatic Orthopedics, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • About author:Sun Shi-dong, Master, Physician, Department of Traumatic Orthopedics, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong Province, China
  • Supported by:

    the Science and Technology Program of Guangdong Province, No. 2014A020212593

Abstract:

BACKGROUND: Osteoporosis is a serious threat to the health and quality of life in the elderly. It is important to establish an ideal experimental animal model to study the etiology and treatment of osteoporosis.
OBJECTIVE: To establish a rat model of osteoporosis induced by different dosages of retinoic acid, thus selecting the optimal dosage.  
METHODS: Eighty female Sprague-Dawley rats were randomly divided into control, low-, middle- and high-dosage groups based on body mass (n=20 per group), The rats in the latter three groups were induced with 80, 100, and     120 mg/(kg•d) retinoic acid via gastric lavage for 14 days.
RESULTS AND CONCLUSION: Compared with the control group, the bone mineral density, number of osteoblasts and osteoclasts, and bone microarchitecture in the low-dosage group showed no significant changes, while there were significant decrease in the serum level of calcium and bone mineral density of femur, significant increase in the number of osteoclasts at the femur and significant changes in the femoral microarchitecture in the middle- and high-dosage groups, especially in the middle-dose group. To conclude, 120 mg/(kg•d) retinoic acid via gastric lavage for 14 days can induce a stable osteoporosis model in rats.

 

 

Key words: Osteoporosis, Tretinoin, Animals, Model, Tissue Engineering

CLC Number: