Open Access

Cellular and molecular changes to chondrocytes in an in vitro model of developmental dysplasia of the hip‑an experimental model of DDH with swaddling position

  • Authors:
    • Bo Ning
    • Rui Jin
    • Lin Wan
    • Dahui Wang
  • View Affiliations

  • Published online on: August 13, 2018     https://doi.org/10.3892/mmr.2018.9384
  • Pages: 3873-3881
  • Copyright: © Ning et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present study was to assess the cellular and molecular changes to chondrocytes in a developmental dysplasia of the hip (DDH) model and to investigate the early metabolism of chondrocytes in DDH. Neonatal Wistar rats were used for the DDH model with swaddling position. Primary cultures of chondrocytes were prepared at serial interval stages (2, 4, 6 and 8 weeks) to investigate cellular proliferation. The expression of collagen II and aggrecan mRNA was detected to assess the anabolic ability of chondrocytes. The expression of matrix metallopeptidase (MMP)‑13 and ADAM metallopeptidase with thrombospondin type 1 motif 5 (ADAMTS‑5) mRNA was measured to investigate the degradation of collagen II and aggrecan, respectively. Morphological changes were observed in coronal dissection samples after the removal of fixation. Primary chondrocytes at serial intervals were assessed using a Cell Counting Kit‑8 assay and the results revealed that DDH chondrocytes had more proliferative activity. The expression of collagen II mRNA was upregulated at 2 weeks and was more sensitive to mechanical loading compared with aggrecan. Similar changes occurred at 6 weeks. Furthermore, MMP‑13 and ADAMTS‑5 mRNA expression levels were upregulated at 2 weeks. It was also demonstrated that DDH chondrocytes exhibited high proliferative activity at the early stages and degeneration later.
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October-2018
Volume 18 Issue 4

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Ning B, Jin R, Wan L and Wang D: Cellular and molecular changes to chondrocytes in an in vitro model of developmental dysplasia of the hip‑an experimental model of DDH with swaddling position. Mol Med Rep 18: 3873-3881, 2018.
APA
Ning, B., Jin, R., Wan, L., & Wang, D. (2018). Cellular and molecular changes to chondrocytes in an in vitro model of developmental dysplasia of the hip‑an experimental model of DDH with swaddling position. Molecular Medicine Reports, 18, 3873-3881. https://doi.org/10.3892/mmr.2018.9384
MLA
Ning, B., Jin, R., Wan, L., Wang, D."Cellular and molecular changes to chondrocytes in an in vitro model of developmental dysplasia of the hip‑an experimental model of DDH with swaddling position". Molecular Medicine Reports 18.4 (2018): 3873-3881.
Chicago
Ning, B., Jin, R., Wan, L., Wang, D."Cellular and molecular changes to chondrocytes in an in vitro model of developmental dysplasia of the hip‑an experimental model of DDH with swaddling position". Molecular Medicine Reports 18, no. 4 (2018): 3873-3881. https://doi.org/10.3892/mmr.2018.9384