Chinese Journal of Tissue Engineering Research ›› 2021, Vol. 25 ›› Issue (26): 4123-4129.doi: 10.12307/2021.109

Previous Articles     Next Articles

The difference between autologous and allogeneic purified platelet-rich plasma in the treatment of rabbit knee osteoarthritis

Zhao Luting1, Fang Qilin1, Tang Haiyan2, Xu Fangyuan3   

  1. 1The First People’s Hospital of Ziyang, Ziyang 641300, Sichuan Province, China;  2Zigong First People’s Hospital, Zigong 643000, Sichuan Province, China; 3The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2020-05-26 Revised:2020-05-28 Accepted:2020-08-29 Online:2021-09-18 Published:2021-04-26
  • Contact: Xu Fangyuan, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China E-mail:x5144@163.com
  • About author:Zhao Luting, Master, Physician, The First People’s Hospital of Ziyang, Ziyang 641300, Sichuan Province, China
  • Supported by:
    a grant from Sichuan Provincial Education Department, No. 12ZB255 (to XFY)

Abstract:

BACKGROUND: Purified platelet-rich plasma after activation can promote the proliferation of chondrocytes, regulate inflammation in the joints, and effectively treat knee osteoarthritis.

OBJECTIVE: To compare the effects of autologous and allogeneic purified platelet-rich plasma in repairing knee osteoarthritis.
METHODS: Thirty-two 3-month-old New Zealand big-eared rabbits were divided into four groups using a random number table method, with eight rabbits in each group: the normal group was treated without any treatment; in the model, autologous, and allogeneic groups, a knee osteoarthritis model was prepared by intra-articular injection of a mixed solution of papain and L-cysteine. After 2 weeks of modeling, the autologous group and allogeneic group were injected intra-articularly with autologous and allogeneic purified platelet-rich plasma, respectively. Platelet-rich plasma was injected once every 2 weeks for a total of three injections. Two weeks after the last injection, gross observation, histological observation and immunohistochemical observation of the articular cartilage were performed. The experiment was approved by the Laboratory Animal Management Committee of Southwest Medical University.
RESULTS AND CONCLUSION: General observation: The surface of the articular cartilage of the model group was rough, cartilage defects, erosions, ulcers, joint osteophytes were formed, and there was a large amount of joint cavity effusion. Articular cartilage damage and osteophytes formation in the autologous group were lighter than those in the model group. Compared with the model group, the articular cartilage injury and osteophyte formation in the allogeneic group were not significantly improved. Histological observation: Compared with the model group, the cartilage structure, matrix staining, cells, and tide lines of the autologous group were significantly improved (P < 0.05); the cartilage structure of the allogeneic group was improved (P < 0.05), but there was no obvious improvement in cell arrangement, matrix staining, and tide line. Immunohistochemical observation: The expression of bone morphogenetic protein 2 and Sox9 in the autologous group and the allogeneic group was higher than that of the model group (P < 0.05), and the expression of bone morphogenetic protein 2 in the autologous group was higher than that of the allogeneic group (P < 0.05). To conclude, both autologous and allogeneic purified platelet-rich plasma can improve the proliferation of knee osteoarthritis chondrocytes and promote chondrocyte repair to a certain extent, but the therapeutic effect of autologous purified platelet-rich plasma is more obvious.

Key words: experiment, animal, rabbit, knee osteoarthritis, purified platelet-rich plasma, bone morphogenetic protein 2, Sox9

CLC Number: