Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (16): 2493-2498.doi: 10.3969/j.issn.2095-4344.2014.16.006

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Multiwalled carbon nanotubes improve the morphology of the femoral head of a rabbit model of steroid-induced necrosis of femoral head

Qi Chao1, Wang Xiao-jun1, Wang Xiao-qiang2, Feng Xin1, Zhang Xiao-sheng1, Zhao Xia1Yu Teng-bo1   

  1. 1Department of joint Surgery, Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, Shandong Province, China; 2Shouguang Municipal Hospital, Shouguang 262700, Shandong Province, China
  • Revised:2014-03-05 Online:2014-04-16 Published:2014-04-16
  • Contact: Yu Teng-bo, M.D., Chief physician, Professor, Department of joint Surgery, Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, Shandong Province, China
  • About author:Qi Chao, M.D., Attending physician, Department of Joint Surgery, Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, Shandong Province, China Wang Xiao-jun, Studying for master’s degree, Department of Joint Surgery, Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, Shandong Province, China Qi Chao and Wang Xiao-jun contributed equally to this work.

Abstract:

BACKGROUND: Multiwalled carbon nanotubes can accelerate the proliferation and differentiation of osteoblasts, and exert a therapeutic effect on steroid-induced necrosis of femoral head (SNFH).    

OBJECTIVE: To investigate the function of multiwalled carbon nanotubes in the establishment of a rabbit model of SNFH.
METHODS: Thirty-six New Zealand white rabbits were divided randomly into three groups. In treatment group, 16 rabbits were given intragluteally injection of dexamethasone (2.5 mg/kg) every day and injection of 1 mL liquor of multiwalled carbon nanotubes (0.1 g/L) into the bilateral femur medullary space every week. In model group, 16 rabbits were given intragluteally injection of dexamethasone (2.5 mg/kg) every day and injection of 1 mL normal saline into the bilateral femur medullary space every week. In control group, four rabbits were given intragluteally injection of 2 mL normal saline every day and injection of 1 mL normal saline into the bilateral femur medullary space every week.

RESULTS AND CONCLUSION: Four weeks after hormone injection, the trabeculae began to exhibit a small amount of thinner fractures, an accumulation of fatty tissue in the bone marrow were obvious, bone marrow fat cells became bigger and microvascular thrombosis appeared in the model group, while there was no positive histopathological manifestation in the treatment group. This indicates that the multiwalled carbon nanotubes can extenuate pathological damage to the femoral head to a certain extent.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


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Key words: nanotubes, carbon, femur head necrosis, mesenchymal stem cells, femur head

CLC Number: