The goal of this study was to characterize antibody penetration through cartilage tissue under mechanical loading. Mechanical stimulation aids in the penetration of some proteins, but this effect has not characterized molecules such as antibodies (>100 kDa), which may hold some clinical value for treating osteoarthritis (OA). For each experiment, fresh articular cartilage plugs were obtained and exposed to fluorescently labeled antibodies while under cyclic mechanical load in unconfined compression for several hours. Penetration of these antibodies was quantified using confocal microscopy, and finite element (FE) simulations were conducted to predict fluid flow patterns within loaded samples. Transport enhancement followed a linear trend with strain amplitude (0.25–5%) and a nonlinear trend with frequency (0.25–2.60 Hz), with maximum enhancement found to be at 5% cyclic strain and 1 Hz, respectively. Regions of highest enhancement of transport within the tissue were associated with the regions of highest interstitial fluid velocity, as predicted from finite-element simulations. Overall, cyclic compression-enhanced antibody transport by twofold to threefold. To our knowledge, this is the first study to test how mechanical stimulation affects the diffusion of antibodies in cartilage and suggest further study into other important factors regarding macromolecular transport.
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January 2017
Research-Article
Cyclic Mechanical Loading Enhances Transport of Antibodies Into Articular Cartilage
Chris D. DiDomenico,
Chris D. DiDomenico
Meinig School of Biomedical Engineering,
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: cdd72@cornell.edu
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: cdd72@cornell.edu
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Zhen Xiang Wang,
Zhen Xiang Wang
Meinig School of Biomedical Engineering,
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: zw55@cornell.edu
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: zw55@cornell.edu
Search for other works by this author on:
Lawrence J. Bonassar
Lawrence J. Bonassar
Professor
Meinig School of Biomedical Engineering,
Sibley School of Mechanical
and Aerospace Engineering,
Cornell University,
149 Weill Hall,
Ithaca, NY 14853
e-mail: lb244@cornell.edu
Meinig School of Biomedical Engineering,
Sibley School of Mechanical
and Aerospace Engineering,
Cornell University,
149 Weill Hall,
Ithaca, NY 14853
e-mail: lb244@cornell.edu
Search for other works by this author on:
Chris D. DiDomenico
Meinig School of Biomedical Engineering,
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: cdd72@cornell.edu
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: cdd72@cornell.edu
Zhen Xiang Wang
Meinig School of Biomedical Engineering,
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: zw55@cornell.edu
Cornell University,
145 Weill Hall,
Ithaca, NY 14853
e-mail: zw55@cornell.edu
Lawrence J. Bonassar
Professor
Meinig School of Biomedical Engineering,
Sibley School of Mechanical
and Aerospace Engineering,
Cornell University,
149 Weill Hall,
Ithaca, NY 14853
e-mail: lb244@cornell.edu
Meinig School of Biomedical Engineering,
Sibley School of Mechanical
and Aerospace Engineering,
Cornell University,
149 Weill Hall,
Ithaca, NY 14853
e-mail: lb244@cornell.edu
1Corresponding author.
Manuscript received June 13, 2016; final manuscript received November 2, 2016; published online November 30, 2016. Assoc. Editor: Jeffrey Ruberti.
J Biomech Eng. Jan 2017, 139(1): 011012 (7 pages)
Published Online: November 30, 2016
Article history
Received:
June 13, 2016
Revised:
November 2, 2016
Citation
DiDomenico, C. D., Xiang Wang, Z., and Bonassar, L. J. (November 30, 2016). "Cyclic Mechanical Loading Enhances Transport of Antibodies Into Articular Cartilage." ASME. J Biomech Eng. January 2017; 139(1): 011012. https://doi.org/10.1115/1.4035265
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