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Full-Text Articles in Sports Medicine
Interleukin-1 Receptor Antagonist Modulates Inflammation And Scarring After Ligament Injury, Connie S. Chamberlain, Ellen M. Leiferman, Kayt E. Frisch, Sarah E. Duenwald-Kuehl, Stacey L. Brickson, William L. Murphy, Georffrey S. Baer, Ray Vanderby
Interleukin-1 Receptor Antagonist Modulates Inflammation And Scarring After Ligament Injury, Connie S. Chamberlain, Ellen M. Leiferman, Kayt E. Frisch, Sarah E. Duenwald-Kuehl, Stacey L. Brickson, William L. Murphy, Georffrey S. Baer, Ray Vanderby
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
Ligaments have limited regenerative potential and as a consequence, repair is protracted and results in a mechanically inferior tissue more scar-like than native ligament. We previously reported that a single injection of interleukin-1 receptor antagonist (IL-1Ra) delivered at the time of injury, decreased the number of M2 macrophage-associated inflammatory cytokines. Based on these results, we hypothesized that IL-1Ra administered after injury and closer to peak inflammation (as would occur clinically), would more effectively decrease inflammation and thereby improve healing. Since IL-1Ra has a short half-life, we also investigated the effect of multiple injections. The objective of this study was to …
Quantification Of Collagen Organization Using Fractal Dimensions And Fourier Transforms, Kayt E. Frisch, Sarah E. Duenwald-Kuehl, Hirohito Kobayashi, Connie S. Chamberlain, Roderic S. Lakes, Ray Vanderby Jr.
Quantification Of Collagen Organization Using Fractal Dimensions And Fourier Transforms, Kayt E. Frisch, Sarah E. Duenwald-Kuehl, Hirohito Kobayashi, Connie S. Chamberlain, Roderic S. Lakes, Ray Vanderby Jr.
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
Collagen fibers and fibrils that comprise tendons and ligaments are disrupted or damaged during injury. Fibrillogenesis during healing produces a matrix that is initially quite disorganized, but remodels over time to resemble, but not replicate, the original roughly parallel microstructure. Quantification of these changes is traditionally a laborious and subjective task. In this work we applied two automated techniques, fast Fourier transformation (FFT) and fractal dimension analysis (FA) to quantify the organization of collagen fibers or fibrils. Using multi-photon images of collagen fibers obtained from rat ligament we showed that for healing ligaments, FA differentiates more clearly between the different …