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Effects of cartilage impact with and without fracture on chondrocyte viability and the release of inflammatory markers.

Publication ,  Journal Article
Stolberg-Stolberg, JA; Furman, BD; Garrigues, NW; Lee, J; Pisetsky, DS; Stearns, NA; DeFrate, LE; Guilak, F; Olson, SA
Published in: J Orthop Res
August 2013

Post-traumatic arthritis (PTA) frequently develops after intra-articular fracture of weight bearing joints. Loss of cartilage viability and post-injury inflammation have both been implicated as possible contributing factors to PTA progression. To further investigate chondrocyte response to impact and fracture, we developed a blunt impact model applying 70%, 80%, or 90% surface-to-surface compressive strain with or without induction of an articular fracture in a cartilage explant model. Following mechanical loading, chondrocyte viability, and apoptosis were assessed. Culture media were evaluated for the release of double-stranded DNA (dsDNA) and immunostimulatory activity via nuclear factor kappa B (NF-κB) activity in Toll-like receptor (TLR) -expressing Ramos-Blue reporter cells. High compressive strains, with or without articular fracture, resulted in significantly reduced chondrocyte viability. Blunt impact at 70% strain induced a loss in viability over time through a combination of apoptosis and necrosis, whereas blunt impact above 80% strain caused predominantly necrosis. In the fracture model, a high level of primarily necrotic chondrocyte death occurred along the fracture edges. At sites away from the fracture, viability was not significantly different than controls. Interestingly, both dsDNA release and NF-κB activity in Ramos-Blue cells increased with blunt impact, but was only significantly increased in the media from fractured cores. This study indicates that the mechanism of trauma determines the type of chondrocyte death and the potential for post-injury inflammation.

Duke Scholars

Published In

J Orthop Res

DOI

EISSN

1554-527X

Publication Date

August 2013

Volume

31

Issue

8

Start / End Page

1283 / 1292

Location

United States

Related Subject Headings

  • Weight-Bearing
  • Toll-Like Receptors
  • Swine
  • Stress, Mechanical
  • Stifle
  • Orthopedics
  • Necrosis
  • NF-kappa B
  • Inflammation
  • Fractures, Cartilage
 

Citation

APA
Chicago
ICMJE
MLA
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Stolberg-Stolberg, J. A., Furman, B. D., Garrigues, N. W., Lee, J., Pisetsky, D. S., Stearns, N. A., … Olson, S. A. (2013). Effects of cartilage impact with and without fracture on chondrocyte viability and the release of inflammatory markers. J Orthop Res, 31(8), 1283–1292. https://doi.org/10.1002/jor.22348
Stolberg-Stolberg, Josef A., Bridgette D. Furman, N William Garrigues, Jaewoo Lee, David S. Pisetsky, Nancy A. Stearns, Louis E. DeFrate, Farshid Guilak, and Steven A. Olson. “Effects of cartilage impact with and without fracture on chondrocyte viability and the release of inflammatory markers.J Orthop Res 31, no. 8 (August 2013): 1283–92. https://doi.org/10.1002/jor.22348.
Stolberg-Stolberg JA, Furman BD, Garrigues NW, Lee J, Pisetsky DS, Stearns NA, et al. Effects of cartilage impact with and without fracture on chondrocyte viability and the release of inflammatory markers. J Orthop Res. 2013 Aug;31(8):1283–92.
Stolberg-Stolberg, Josef A., et al. “Effects of cartilage impact with and without fracture on chondrocyte viability and the release of inflammatory markers.J Orthop Res, vol. 31, no. 8, Aug. 2013, pp. 1283–92. Pubmed, doi:10.1002/jor.22348.
Stolberg-Stolberg JA, Furman BD, Garrigues NW, Lee J, Pisetsky DS, Stearns NA, DeFrate LE, Guilak F, Olson SA. Effects of cartilage impact with and without fracture on chondrocyte viability and the release of inflammatory markers. J Orthop Res. 2013 Aug;31(8):1283–1292.
Journal cover image

Published In

J Orthop Res

DOI

EISSN

1554-527X

Publication Date

August 2013

Volume

31

Issue

8

Start / End Page

1283 / 1292

Location

United States

Related Subject Headings

  • Weight-Bearing
  • Toll-Like Receptors
  • Swine
  • Stress, Mechanical
  • Stifle
  • Orthopedics
  • Necrosis
  • NF-kappa B
  • Inflammation
  • Fractures, Cartilage