Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (51): 8305-8309.doi: 10.3969/j.issn.2095-4344.2014.51.020

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Expression of collagen type I and type II after articular cartilage injury

Zhang Meng1, Zhou Jia-jun2, Luo Zong-ping1   

  1. 1First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China; 2Electromechanical School, Soochow University, Suzhou 215006, Jiangsu Province, China
  • Online:2014-12-10 Published:2014-12-10
  • Contact: Luo Zong-ping, M.D., Professor, First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
  • About author:Zhang Meng, Studying for master’s degree, First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81320108018

Abstract:

BACKGROUND: The relationship between collagen type I and osteoarthritis is still controversial, and expression patterns of collagen type I are not yet fully understood. There is lack of relevant research addressing the above-mentioned issues.
OBJECTIVE: To investigate the patterns of expression of collagen type I, and to contribute to the roles of collagen type I in the pathogenesis of osteoarthritis.
METHODS: The articular cartilage injury model was created in 10 New Zealand white rabbits. A 5 mm longitudinal wound was made in the middle of femoral trochlear groove using a scalpel. At 2 and 6 weeks after modeling, five animals were sacrificed, respectively. The injured articular cartilage was taken to make paraffin sections. Immunohistochemistry detection was used to detect the expression of collagen type I and type II around the injury. Safranine O-fast green staining was used to detect the distribution of proteoglycan around the injury.
RESULTS AND CONCLUSION: Results from the immunohistochemistry detection showed that a small amount of collagen type I was detected around the injury at 2 weeks after modeling, and there was much more collagen type I around cartilage injury at 6 weeks after modeling, but collagen type II had no obvious changes. Under the safranine O-fast green staining, no remarkable degeneration was found around the injured cartilage. These findings indicate that collagen type I has been increased in the early period of osteoarthritis. Expression of collagen type I is increased during the degeneration of articular cartilage, indicating a close relationship between collagen type I and osteoarthritis.



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


全文链接:

Key words: collagen type I, collagen type II, knee joint, cartilage, rabbits

CLC Number: