A novel method to establish the rabbit model of knee osteoarthritis: intra-articular injection of SDF-1 induces OA

BMC Musculoskeletal Disorders

Canzhang Li¹  Dejian Liu¹  Guofeng Cai¹  Yanlin Li¹  Yinhong He¹  Chuan He¹  Guoliang Wang¹ 

[1] Departments of Sports Medicine, The First Affiliated Hospital, Kunming Medical University, 650032, Kunming, Yunnan, P.R. China;

关键词: Osteoarthritis;    Intra-articular injection;    SDF-1;    Animal model;   

DOI  :  10.1186/s12891-021-04188-7

来源: Springer

【 摘 要 】

BackgroundAnimal model of Knee Osteoarthritis (OA) is the primary testing methodology for studies on pathogenic mechanisms and therapies of human OA disease. Recent major modeling methods are divided into artificially induced and spontaneous. However, these methods have some disadvantages of slow progression, high cost and no correlation with the pathogenesis of OA.MethodsOur studies attempted to find a rapid, easy, and consistent with the natural pathological process of OA modeling method by intra-articular injection of stromal cell-derived factor 1 (SDF-1) in the rabbit knee. After induction we collected cartilage specimens from the medial femoral condyle to undergo macroscopic, histological, immunohistochemical, and biochemical evaluations. Meanwhile, compared with Hulth surgical method to evaluate its efficacy.ResultsMacroscopic observation and modified Mankin score of histological staining exhibited typical features of middle stage OA cartilage in SDF-1 injected groups. Immunohistochemically, the positive expression of interleukin-1 (IL-1) and tumor necrosis factor α(TNF-α) was earlier and higher in high dose SDF-1 group than the surgical group. The matrix metalloproteinases (MMPs) in synovial fluid and chondrocytes significantly increased, but type II collagen (COLII) and aggrecan (ACAN) protein expressions decreased in SDF-1 injected group following the extension of time and increase of SDF-1 concentration.ConclusionsOur data indicated intra-articular injection of SDF-1 (40μg/kg, three times for 12 weeks) can induce rabbit knee OA model successfully more rapidly and easily than traditional surgical modeling. The study provided a further option for the establishment of knee OA animal model.

【 授权许可】

CC BY