Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (2): 177-182.doi: 10.3969/j.issn.2095-4344.2014.02.003

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Cartilage surface of early osteoarthritis in rats induced by papain under scanning electron microscope

Wang Zong-bao1, 2, 3, Xu Ya-lin1, Liao Wei-ming2, Lu Qing-you4, Chen Zhao-hui3, Wu Xiang-yang3, Sun Xu3, Duan Wen-xiu3, Bao Yong-jun3, Dai Yue-lan3   

  1. 1Science Research Base of Kaiping City Central Hospital, Postdoctoral Mobile Station of Sun Yat-sen University, Kaiping 529300, Guangdong Province, China;    2Department of Orthopedics, the First Hospital Affiliated to Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China; 3Clinical School of Acupuncture and Orthopaedics, Anhui University of Traditional Chinese Medicine, Hefei 230038, Anhui Province, China; 4Department of Traumatic Surgery, East Hospital Affiliated to Tongji University, Shanghai 200120, China
  • Received:2013-10-30 Online:2014-01-08 Published:2014-01-08
  • Contact: Xu Ya-lin, Professor, Master’s supervisor, Science Research Base of Kaiping Central Hospital, Postdoctoral Mobile Station of Sun Yat-sen University, Kaiping 529300, Guangdong Province, China Liao Wei-ming, Professor, Doctoral supervisor, Department of Orthopedics, the First Hospital Affiliated to Sun Yat-sen University, Guangzhou 510080 Guangdong Province, China
  • About author:Wang Zong-bao, M. D., Attending physician, Science Research Base of Kaiping Central Hospital, Postdoctoral Mobile Station of Sun Yat-sen University, Kaiping 529300, Guangdong Province, China; Department of Orthopedics, the First Hospital Affiliated to Sun Yat-sen University, Guangzhou 510080, Guangdong Province, China; Clinical School of Acupuncture and Orthopaedics, Anhui University of Traditional Chinese Medicine, Hefei 230086, Anhui Province, China
  • Supported by:

    Postdoctorate Science Foundation in China, No. 2011M501355

Abstract:

BACKGROUND: Osteoarthritis animal models induced by papain are commonly used for studying osteoarthritis.
OBJECTIVE: To observe the morphology of articular cartilage surface during early osteoarthritis process in rats induced by papain and L-cysteine under scanning electron microscope.
METHODS: The right knees of Sprague-Dawley rats were given 0.15 mL mixed solution of 2% papain and    0.03 mol/L L-cysteine in the ratio of 2:1. The left knees were given injections of 0.15 mL 0.9% NaCl, as the control group. Another two rats (four knees) maintained untreated, as the normal control group. All the rats were observed with scanning electron microscope at 2, 4, 6 weeks after injection, to explore the surface morphology of medial condyle of femur.
RESULTS AND CONCLUSION: The condyles of normal and control groups revealed numerous shallow pits on the surface of articular cartilage. At 2 weeks after injection, the surfaces of condyles were unsmooth, presenting the shrinkage and distortion. The thinner articular cartilage and local tiny cracks were seen at 4 weeks. The deep and great cracks and cartilage defect were observed on the surface of cartilage at 6 weeks. The time of 4-      6 weeks is a reference point for establishing early osteoarthritis model in rats through injections of 2% papain and 0.03 mol/L L-cysteine.



中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


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Key words: osteoarthritis, papain, L-cysteine, cartilage, articular

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